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android_kernel_xiaomi_sm7250/drivers/s390/net/qeth_main.c
Frank Pavlic 05e08a2a29 [PATCH] s390: qeth bug fixes 
[patch 10/10] s390: qeth bug fixes.

From: Frank Pavlic <pavlic@de.ibm.com>

qeth network driver related changes:
 - due to OSA hardware changes in TCP Segmentation Offload
   support we are able now to pack TSO packets too.
   This fits perfectly in design of qeth buffer handling and
   sending data respectively.
 - remove skb_realloc_headroom from the sending path since
   hard_header_len value provides enough headroom now.
 - device recovery behaviour improvement
 - bug fixed in Enhanced Device Driver Packing functionality

Signed-off-by: Frank Pavlic <pavlic@de.ibm.com>
2005-05-15 18:06:17 -04:00

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/*
*
* linux/drivers/s390/net/qeth_main.c ($Revision: 1.214 $)
*
* Linux on zSeries OSA Express and HiperSockets support
*
* Copyright 2000,2003 IBM Corporation
*
* Author(s): Original Code written by
* Utz Bacher (utz.bacher@de.ibm.com)
* Rewritten by
* Frank Pavlic (pavlic@de.ibm.com) and
* Thomas Spatzier <tspat@de.ibm.com>
*
* $Revision: 1.214 $ $Date: 2005/05/04 20:19:18 $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/***
* eye catcher; just for debugging purposes
*/
void volatile
qeth_eyecatcher(void)
{
return;
}
#include <linux/config.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/mm.h>
#include <linux/ip.h>
#include <linux/inetdevice.h>
#include <linux/netdevice.h>
#include <linux/sched.h>
#include <linux/workqueue.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/tcp.h>
#include <linux/icmp.h>
#include <linux/skbuff.h>
#include <linux/in.h>
#include <linux/igmp.h>
#include <linux/init.h>
#include <linux/reboot.h>
#include <linux/mii.h>
#include <linux/rcupdate.h>
#include <linux/ethtool.h>
#include <net/arp.h>
#include <net/ip.h>
#include <net/route.h>
#include <asm/ebcdic.h>
#include <asm/io.h>
#include <asm/qeth.h>
#include <asm/timex.h>
#include <asm/semaphore.h>
#include <asm/uaccess.h>
#include "qeth.h"
#include "qeth_mpc.h"
#include "qeth_fs.h"
#include "qeth_eddp.h"
#include "qeth_tso.h"
#define VERSION_QETH_C "$Revision: 1.214 $"
static const char *version = "qeth S/390 OSA-Express driver";
/**
* Debug Facility Stuff
*/
static debug_info_t *qeth_dbf_setup = NULL;
static debug_info_t *qeth_dbf_data = NULL;
static debug_info_t *qeth_dbf_misc = NULL;
static debug_info_t *qeth_dbf_control = NULL;
debug_info_t *qeth_dbf_trace = NULL;
static debug_info_t *qeth_dbf_sense = NULL;
static debug_info_t *qeth_dbf_qerr = NULL;
DEFINE_PER_CPU(char[256], qeth_dbf_txt_buf);
/**
* some more definitions and declarations
*/
static unsigned int known_devices[][10] = QETH_MODELLIST_ARRAY;
/* list of our cards */
struct qeth_card_list_struct qeth_card_list;
/*process list want to be notified*/
spinlock_t qeth_notify_lock;
struct list_head qeth_notify_list;
static void qeth_send_control_data_cb(struct qeth_channel *,
struct qeth_cmd_buffer *);
/**
* here we go with function implementation
*/
static void
qeth_init_qdio_info(struct qeth_card *card);
static int
qeth_init_qdio_queues(struct qeth_card *card);
static int
qeth_alloc_qdio_buffers(struct qeth_card *card);
static void
qeth_free_qdio_buffers(struct qeth_card *);
static void
qeth_clear_qdio_buffers(struct qeth_card *);
static void
qeth_clear_ip_list(struct qeth_card *, int, int);
static void
qeth_clear_ipacmd_list(struct qeth_card *);
static int
qeth_qdio_clear_card(struct qeth_card *, int);
static void
qeth_clear_working_pool_list(struct qeth_card *);
static void
qeth_clear_cmd_buffers(struct qeth_channel *);
static int
qeth_stop(struct net_device *);
static void
qeth_clear_ipato_list(struct qeth_card *);
static int
qeth_is_addr_covered_by_ipato(struct qeth_card *, struct qeth_ipaddr *);
static void
qeth_irq_tasklet(unsigned long);
static int
qeth_set_online(struct ccwgroup_device *);
static int
__qeth_set_online(struct ccwgroup_device *gdev, int recovery_mode);
static struct qeth_ipaddr *
qeth_get_addr_buffer(enum qeth_prot_versions);
static void
qeth_set_multicast_list(struct net_device *);
static void
qeth_notify_processes(void)
{
/*notify all registered processes */
struct qeth_notify_list_struct *n_entry;
QETH_DBF_TEXT(trace,3,"procnoti");
spin_lock(&qeth_notify_lock);
list_for_each_entry(n_entry, &qeth_notify_list, list) {
send_sig(n_entry->signum, n_entry->task, 1);
}
spin_unlock(&qeth_notify_lock);
}
int
qeth_notifier_unregister(struct task_struct *p)
{
struct qeth_notify_list_struct *n_entry, *tmp;
QETH_DBF_TEXT(trace, 2, "notunreg");
spin_lock(&qeth_notify_lock);
list_for_each_entry_safe(n_entry, tmp, &qeth_notify_list, list) {
if (n_entry->task == p) {
list_del(&n_entry->list);
kfree(n_entry);
goto out;
}
}
out:
spin_unlock(&qeth_notify_lock);
return 0;
}
int
qeth_notifier_register(struct task_struct *p, int signum)
{
struct qeth_notify_list_struct *n_entry;
/*check first if entry already exists*/
spin_lock(&qeth_notify_lock);
list_for_each_entry(n_entry, &qeth_notify_list, list) {
if (n_entry->task == p) {
n_entry->signum = signum;
spin_unlock(&qeth_notify_lock);
return 0;
}
}
spin_unlock(&qeth_notify_lock);
n_entry = (struct qeth_notify_list_struct *)
kmalloc(sizeof(struct qeth_notify_list_struct),GFP_KERNEL);
if (!n_entry)
return -ENOMEM;
n_entry->task = p;
n_entry->signum = signum;
spin_lock(&qeth_notify_lock);
list_add(&n_entry->list,&qeth_notify_list);
spin_unlock(&qeth_notify_lock);
return 0;
}
/**
* free channel command buffers
*/
static void
qeth_clean_channel(struct qeth_channel *channel)
{
int cnt;
QETH_DBF_TEXT(setup, 2, "freech");
for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
kfree(channel->iob[cnt].data);
}
/**
* free card
*/
static void
qeth_free_card(struct qeth_card *card)
{
QETH_DBF_TEXT(setup, 2, "freecrd");
QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
qeth_clean_channel(&card->read);
qeth_clean_channel(&card->write);
if (card->dev)
free_netdev(card->dev);
qeth_clear_ip_list(card, 0, 0);
qeth_clear_ipato_list(card);
kfree(card->ip_tbd_list);
qeth_free_qdio_buffers(card);
kfree(card);
}
/**
* alloc memory for command buffer per channel
*/
static int
qeth_setup_channel(struct qeth_channel *channel)
{
int cnt;
QETH_DBF_TEXT(setup, 2, "setupch");
for (cnt=0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
channel->iob[cnt].data = (char *)
kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
if (channel->iob[cnt].data == NULL)
break;
channel->iob[cnt].state = BUF_STATE_FREE;
channel->iob[cnt].channel = channel;
channel->iob[cnt].callback = qeth_send_control_data_cb;
channel->iob[cnt].rc = 0;
}
if (cnt < QETH_CMD_BUFFER_NO) {
while (cnt-- > 0)
kfree(channel->iob[cnt].data);
return -ENOMEM;
}
channel->buf_no = 0;
channel->io_buf_no = 0;
atomic_set(&channel->irq_pending, 0);
spin_lock_init(&channel->iob_lock);
init_waitqueue_head(&channel->wait_q);
channel->irq_tasklet.data = (unsigned long) channel;
channel->irq_tasklet.func = qeth_irq_tasklet;
return 0;
}
/**
* alloc memory for card structure
*/
static struct qeth_card *
qeth_alloc_card(void)
{
struct qeth_card *card;
QETH_DBF_TEXT(setup, 2, "alloccrd");
card = (struct qeth_card *) kmalloc(sizeof(struct qeth_card),
GFP_DMA|GFP_KERNEL);
if (!card)
return NULL;
QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
memset(card, 0, sizeof(struct qeth_card));
if (qeth_setup_channel(&card->read)) {
kfree(card);
return NULL;
}
if (qeth_setup_channel(&card->write)) {
qeth_clean_channel(&card->read);
kfree(card);
return NULL;
}
return card;
}
static long
__qeth_check_irb_error(struct ccw_device *cdev, struct irb *irb)
{
if (!IS_ERR(irb))
return 0;
switch (PTR_ERR(irb)) {
case -EIO:
PRINT_WARN("i/o-error on device %s\n", cdev->dev.bus_id);
QETH_DBF_TEXT(trace, 2, "ckirberr");
QETH_DBF_TEXT_(trace, 2, " rc%d", -EIO);
break;
case -ETIMEDOUT:
PRINT_WARN("timeout on device %s\n", cdev->dev.bus_id);
QETH_DBF_TEXT(trace, 2, "ckirberr");
QETH_DBF_TEXT_(trace, 2, " rc%d", -ETIMEDOUT);
break;
default:
PRINT_WARN("unknown error %ld on device %s\n", PTR_ERR(irb),
cdev->dev.bus_id);
QETH_DBF_TEXT(trace, 2, "ckirberr");
QETH_DBF_TEXT(trace, 2, " rc???");
}
return PTR_ERR(irb);
}
static int
qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
{
int dstat,cstat;
char *sense;
sense = (char *) irb->ecw;
cstat = irb->scsw.cstat;
dstat = irb->scsw.dstat;
if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
QETH_DBF_TEXT(trace,2, "CGENCHK");
PRINT_WARN("check on device %s, dstat=x%x, cstat=x%x ",
cdev->dev.bus_id, dstat, cstat);
HEXDUMP16(WARN, "irb: ", irb);
HEXDUMP16(WARN, "irb: ", ((char *) irb) + 32);
return 1;
}
if (dstat & DEV_STAT_UNIT_CHECK) {
if (sense[SENSE_RESETTING_EVENT_BYTE] &
SENSE_RESETTING_EVENT_FLAG) {
QETH_DBF_TEXT(trace,2,"REVIND");
return 1;
}
if (sense[SENSE_COMMAND_REJECT_BYTE] &
SENSE_COMMAND_REJECT_FLAG) {
QETH_DBF_TEXT(trace,2,"CMDREJi");
return 0;
}
if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
QETH_DBF_TEXT(trace,2,"AFFE");
return 1;
}
if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
QETH_DBF_TEXT(trace,2,"ZEROSEN");
return 0;
}
QETH_DBF_TEXT(trace,2,"DGENCHK");
return 1;
}
return 0;
}
static int qeth_issue_next_read(struct qeth_card *);
/**
* interrupt handler
*/
static void
qeth_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
{
int rc;
int cstat,dstat;
struct qeth_cmd_buffer *buffer;
struct qeth_channel *channel;
struct qeth_card *card;
QETH_DBF_TEXT(trace,5,"irq");
if (__qeth_check_irb_error(cdev, irb))
return;
cstat = irb->scsw.cstat;
dstat = irb->scsw.dstat;
card = CARD_FROM_CDEV(cdev);
if (!card)
return;
if (card->read.ccwdev == cdev){
channel = &card->read;
QETH_DBF_TEXT(trace,5,"read");
} else if (card->write.ccwdev == cdev) {
channel = &card->write;
QETH_DBF_TEXT(trace,5,"write");
} else {
channel = &card->data;
QETH_DBF_TEXT(trace,5,"data");
}
atomic_set(&channel->irq_pending, 0);
if (irb->scsw.fctl & (SCSW_FCTL_CLEAR_FUNC))
channel->state = CH_STATE_STOPPED;
if (irb->scsw.fctl & (SCSW_FCTL_HALT_FUNC))
channel->state = CH_STATE_HALTED;
/*let's wake up immediately on data channel*/
if ((channel == &card->data) && (intparm != 0))
goto out;
if (intparm == QETH_CLEAR_CHANNEL_PARM) {
QETH_DBF_TEXT(trace, 6, "clrchpar");
/* we don't have to handle this further */
intparm = 0;
}
if (intparm == QETH_HALT_CHANNEL_PARM) {
QETH_DBF_TEXT(trace, 6, "hltchpar");
/* we don't have to handle this further */
intparm = 0;
}
if ((dstat & DEV_STAT_UNIT_EXCEP) ||
(dstat & DEV_STAT_UNIT_CHECK) ||
(cstat)) {
if (irb->esw.esw0.erw.cons) {
/* TODO: we should make this s390dbf */
PRINT_WARN("sense data available on channel %s.\n",
CHANNEL_ID(channel));
PRINT_WARN(" cstat 0x%X\n dstat 0x%X\n", cstat, dstat);
HEXDUMP16(WARN,"irb: ",irb);
HEXDUMP16(WARN,"sense data: ",irb->ecw);
}
rc = qeth_get_problem(cdev,irb);
if (rc) {
qeth_schedule_recovery(card);
goto out;
}
}
if (intparm) {
buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
buffer->state = BUF_STATE_PROCESSED;
}
if (channel == &card->data)
return;
if (channel == &card->read &&
channel->state == CH_STATE_UP)
qeth_issue_next_read(card);
tasklet_schedule(&channel->irq_tasklet);
return;
out:
wake_up(&card->wait_q);
}
/**
* tasklet function scheduled from irq handler
*/
static void
qeth_irq_tasklet(unsigned long data)
{
struct qeth_card *card;
struct qeth_channel *channel;
struct qeth_cmd_buffer *iob;
__u8 index;
QETH_DBF_TEXT(trace,5,"irqtlet");
channel = (struct qeth_channel *) data;
iob = channel->iob;
index = channel->buf_no;
card = CARD_FROM_CDEV(channel->ccwdev);
while (iob[index].state == BUF_STATE_PROCESSED) {
if (iob[index].callback !=NULL) {
iob[index].callback(channel,iob + index);
}
index = (index + 1) % QETH_CMD_BUFFER_NO;
}
channel->buf_no = index;
wake_up(&card->wait_q);
}
static int qeth_stop_card(struct qeth_card *, int);
static int
__qeth_set_offline(struct ccwgroup_device *cgdev, int recovery_mode)
{
struct qeth_card *card = (struct qeth_card *) cgdev->dev.driver_data;
int rc = 0;
enum qeth_card_states recover_flag;
QETH_DBF_TEXT(setup, 3, "setoffl");
QETH_DBF_HEX(setup, 3, &card, sizeof(void *));
recover_flag = card->state;
if (qeth_stop_card(card, recovery_mode) == -ERESTARTSYS){
PRINT_WARN("Stopping card %s interrupted by user!\n",
CARD_BUS_ID(card));
return -ERESTARTSYS;
}
if ((rc = ccw_device_set_offline(CARD_DDEV(card))) ||
(rc = ccw_device_set_offline(CARD_WDEV(card))) ||
(rc = ccw_device_set_offline(CARD_RDEV(card)))) {
QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
}
if (recover_flag == CARD_STATE_UP)
card->state = CARD_STATE_RECOVER;
qeth_notify_processes();
return 0;
}
static int
qeth_set_offline(struct ccwgroup_device *cgdev)
{
return __qeth_set_offline(cgdev, 0);
}
static int
qeth_wait_for_threads(struct qeth_card *card, unsigned long threads);
static void
qeth_remove_device(struct ccwgroup_device *cgdev)
{
struct qeth_card *card = (struct qeth_card *) cgdev->dev.driver_data;
unsigned long flags;
QETH_DBF_TEXT(setup, 3, "rmdev");
QETH_DBF_HEX(setup, 3, &card, sizeof(void *));
if (!card)
return;
if (qeth_wait_for_threads(card, 0xffffffff))
return;
if (cgdev->state == CCWGROUP_ONLINE){
card->use_hard_stop = 1;
qeth_set_offline(cgdev);
}
/* remove form our internal list */
write_lock_irqsave(&qeth_card_list.rwlock, flags);
list_del(&card->list);
write_unlock_irqrestore(&qeth_card_list.rwlock, flags);
if (card->dev)
unregister_netdev(card->dev);
qeth_remove_device_attributes(&cgdev->dev);
qeth_free_card(card);
cgdev->dev.driver_data = NULL;
put_device(&cgdev->dev);
}
static int
qeth_register_addr_entry(struct qeth_card *, struct qeth_ipaddr *);
static int
qeth_deregister_addr_entry(struct qeth_card *, struct qeth_ipaddr *);
/**
* Add/remove address to/from card's ip list, i.e. try to add or remove
* reference to/from an IP address that is already registered on the card.
* Returns:
* 0 address was on card and its reference count has been adjusted,
* but is still > 0, so nothing has to be done
* also returns 0 if card was not on card and the todo was to delete
* the address -> there is also nothing to be done
* 1 address was not on card and the todo is to add it to the card's ip
* list
* -1 address was on card and its reference count has been decremented
* to <= 0 by the todo -> address must be removed from card
*/
static int
__qeth_ref_ip_on_card(struct qeth_card *card, struct qeth_ipaddr *todo,
struct qeth_ipaddr **__addr)
{
struct qeth_ipaddr *addr;
int found = 0;
list_for_each_entry(addr, &card->ip_list, entry) {
if ((addr->proto == QETH_PROT_IPV4) &&
(todo->proto == QETH_PROT_IPV4) &&
(addr->type == todo->type) &&
(addr->u.a4.addr == todo->u.a4.addr) &&
(addr->u.a4.mask == todo->u.a4.mask) ){
found = 1;
break;
}
if ((addr->proto == QETH_PROT_IPV6) &&
(todo->proto == QETH_PROT_IPV6) &&
(addr->type == todo->type) &&
(addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
(memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
sizeof(struct in6_addr)) == 0)) {
found = 1;
break;
}
}
if (found){
addr->users += todo->users;
if (addr->users <= 0){
*__addr = addr;
return -1;
} else {
/* for VIPA and RXIP limit refcount to 1 */
if (addr->type != QETH_IP_TYPE_NORMAL)
addr->users = 1;
return 0;
}
}
if (todo->users > 0){
/* for VIPA and RXIP limit refcount to 1 */
if (todo->type != QETH_IP_TYPE_NORMAL)
todo->users = 1;
return 1;
} else
return 0;
}
static inline int
__qeth_address_exists_in_list(struct list_head *list, struct qeth_ipaddr *addr,
int same_type)
{
struct qeth_ipaddr *tmp;
list_for_each_entry(tmp, list, entry) {
if ((tmp->proto == QETH_PROT_IPV4) &&
(addr->proto == QETH_PROT_IPV4) &&
((same_type && (tmp->type == addr->type)) ||
(!same_type && (tmp->type != addr->type)) ) &&
(tmp->u.a4.addr == addr->u.a4.addr) ){
return 1;
}
if ((tmp->proto == QETH_PROT_IPV6) &&
(addr->proto == QETH_PROT_IPV6) &&
((same_type && (tmp->type == addr->type)) ||
(!same_type && (tmp->type != addr->type)) ) &&
(memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
sizeof(struct in6_addr)) == 0) ) {
return 1;
}
}
return 0;
}
/*
* Add IP to be added to todo list. If there is already an "add todo"
* in this list we just incremenent the reference count.
* Returns 0 if we just incremented reference count.
*/
static int
__qeth_insert_ip_todo(struct qeth_card *card, struct qeth_ipaddr *addr, int add)
{
struct qeth_ipaddr *tmp, *t;
int found = 0;
list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
(tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
return 0;
if ((tmp->proto == QETH_PROT_IPV4) &&
(addr->proto == QETH_PROT_IPV4) &&
(tmp->type == addr->type) &&
(tmp->is_multicast == addr->is_multicast) &&
(tmp->u.a4.addr == addr->u.a4.addr) &&
(tmp->u.a4.mask == addr->u.a4.mask) ){
found = 1;
break;
}
if ((tmp->proto == QETH_PROT_IPV6) &&
(addr->proto == QETH_PROT_IPV6) &&
(tmp->type == addr->type) &&
(tmp->is_multicast == addr->is_multicast) &&
(tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
(memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
sizeof(struct in6_addr)) == 0) ){
found = 1;
break;
}
}
if (found){
if (addr->users != 0)
tmp->users += addr->users;
else
tmp->users += add? 1:-1;
if (tmp->users == 0){
list_del(&tmp->entry);
kfree(tmp);
}
return 0;
} else {
if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
list_add(&addr->entry, card->ip_tbd_list);
else {
if (addr->users == 0)
addr->users += add? 1:-1;
if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
qeth_is_addr_covered_by_ipato(card, addr)){
QETH_DBF_TEXT(trace, 2, "tkovaddr");
addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
}
list_add_tail(&addr->entry, card->ip_tbd_list);
}
return 1;
}
}
/**
* Remove IP address from list
*/
static int
qeth_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
{
unsigned long flags;
int rc = 0;
QETH_DBF_TEXT(trace,4,"delip");
if (addr->proto == QETH_PROT_IPV4)
QETH_DBF_HEX(trace,4,&addr->u.a4.addr,4);
else {
QETH_DBF_HEX(trace,4,&addr->u.a6.addr,8);
QETH_DBF_HEX(trace,4,((char *)&addr->u.a6.addr)+8,8);
}
spin_lock_irqsave(&card->ip_lock, flags);
rc = __qeth_insert_ip_todo(card, addr, 0);
spin_unlock_irqrestore(&card->ip_lock, flags);
return rc;
}
static int
qeth_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
{
unsigned long flags;
int rc = 0;
QETH_DBF_TEXT(trace,4,"addip");
if (addr->proto == QETH_PROT_IPV4)
QETH_DBF_HEX(trace,4,&addr->u.a4.addr,4);
else {
QETH_DBF_HEX(trace,4,&addr->u.a6.addr,8);
QETH_DBF_HEX(trace,4,((char *)&addr->u.a6.addr)+8,8);
}
spin_lock_irqsave(&card->ip_lock, flags);
rc = __qeth_insert_ip_todo(card, addr, 1);
spin_unlock_irqrestore(&card->ip_lock, flags);
return rc;
}
static inline void
__qeth_delete_all_mc(struct qeth_card *card, unsigned long *flags)
{
struct qeth_ipaddr *addr, *tmp;
int rc;
list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
if (addr->is_multicast) {
spin_unlock_irqrestore(&card->ip_lock, *flags);
rc = qeth_deregister_addr_entry(card, addr);
spin_lock_irqsave(&card->ip_lock, *flags);
if (!rc) {
list_del(&addr->entry);
kfree(addr);
}
}
}
}
static void
qeth_set_ip_addr_list(struct qeth_card *card)
{
struct list_head *tbd_list;
struct qeth_ipaddr *todo, *addr;
unsigned long flags;
int rc;
QETH_DBF_TEXT(trace, 2, "sdiplist");
QETH_DBF_HEX(trace, 2, &card, sizeof(void *));
spin_lock_irqsave(&card->ip_lock, flags);
tbd_list = card->ip_tbd_list;
card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_ATOMIC);
if (!card->ip_tbd_list) {
QETH_DBF_TEXT(trace, 0, "silnomem");
card->ip_tbd_list = tbd_list;
spin_unlock_irqrestore(&card->ip_lock, flags);
return;
} else
INIT_LIST_HEAD(card->ip_tbd_list);
while (!list_empty(tbd_list)){
todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
list_del(&todo->entry);
if (todo->type == QETH_IP_TYPE_DEL_ALL_MC){
__qeth_delete_all_mc(card, &flags);
kfree(todo);
continue;
}
rc = __qeth_ref_ip_on_card(card, todo, &addr);
if (rc == 0) {
/* nothing to be done; only adjusted refcount */
kfree(todo);
} else if (rc == 1) {
/* new entry to be added to on-card list */
spin_unlock_irqrestore(&card->ip_lock, flags);
rc = qeth_register_addr_entry(card, todo);
spin_lock_irqsave(&card->ip_lock, flags);
if (!rc)
list_add_tail(&todo->entry, &card->ip_list);
else
kfree(todo);
} else if (rc == -1) {
/* on-card entry to be removed */
list_del_init(&addr->entry);
spin_unlock_irqrestore(&card->ip_lock, flags);
rc = qeth_deregister_addr_entry(card, addr);
spin_lock_irqsave(&card->ip_lock, flags);
if (!rc)
kfree(addr);
else
list_add_tail(&addr->entry, &card->ip_list);
kfree(todo);
}
}
spin_unlock_irqrestore(&card->ip_lock, flags);
kfree(tbd_list);
}
static void qeth_delete_mc_addresses(struct qeth_card *);
static void qeth_add_multicast_ipv4(struct qeth_card *);
#ifdef CONFIG_QETH_IPV6
static void qeth_add_multicast_ipv6(struct qeth_card *);
#endif
static inline int
qeth_set_thread_start_bit(struct qeth_card *card, unsigned long thread)
{
unsigned long flags;
spin_lock_irqsave(&card->thread_mask_lock, flags);
if ( !(card->thread_allowed_mask & thread) ||
(card->thread_start_mask & thread) ) {
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
return -EPERM;
}
card->thread_start_mask |= thread;
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
return 0;
}
static void
qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
{
unsigned long flags;
spin_lock_irqsave(&card->thread_mask_lock, flags);
card->thread_start_mask &= ~thread;
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
wake_up(&card->wait_q);
}
static void
qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
{
unsigned long flags;
spin_lock_irqsave(&card->thread_mask_lock, flags);
card->thread_running_mask &= ~thread;
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
wake_up(&card->wait_q);
}
static inline int
__qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
{
unsigned long flags;
int rc = 0;
spin_lock_irqsave(&card->thread_mask_lock, flags);
if (card->thread_start_mask & thread){
if ((card->thread_allowed_mask & thread) &&
!(card->thread_running_mask & thread)){
rc = 1;
card->thread_start_mask &= ~thread;
card->thread_running_mask |= thread;
} else
rc = -EPERM;
}
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
return rc;
}
static int
qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
{
int rc = 0;
wait_event(card->wait_q,
(rc = __qeth_do_run_thread(card, thread)) >= 0);
return rc;
}
static int
qeth_register_ip_addresses(void *ptr)
{
struct qeth_card *card;
card = (struct qeth_card *) ptr;
daemonize("qeth_reg_ip");
QETH_DBF_TEXT(trace,4,"regipth1");
if (!qeth_do_run_thread(card, QETH_SET_IP_THREAD))
return 0;
QETH_DBF_TEXT(trace,4,"regipth2");
qeth_set_ip_addr_list(card);
qeth_clear_thread_running_bit(card, QETH_SET_IP_THREAD);
return 0;
}
static int
qeth_recover(void *ptr)
{
struct qeth_card *card;
int rc = 0;
card = (struct qeth_card *) ptr;
daemonize("qeth_recover");
QETH_DBF_TEXT(trace,2,"recover1");
QETH_DBF_HEX(trace, 2, &card, sizeof(void *));
if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
return 0;
QETH_DBF_TEXT(trace,2,"recover2");
PRINT_WARN("Recovery of device %s started ...\n",
CARD_BUS_ID(card));
card->use_hard_stop = 1;
__qeth_set_offline(card->gdev,1);
rc = __qeth_set_online(card->gdev,1);
if (!rc)
PRINT_INFO("Device %s successfully recovered!\n",
CARD_BUS_ID(card));
else
PRINT_INFO("Device %s could not be recovered!\n",
CARD_BUS_ID(card));
/* don't run another scheduled recovery */
qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
return 0;
}
void
qeth_schedule_recovery(struct qeth_card *card)
{
QETH_DBF_TEXT(trace,2,"startrec");
if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
schedule_work(&card->kernel_thread_starter);
}
static int
qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
{
unsigned long flags;
int rc = 0;
spin_lock_irqsave(&card->thread_mask_lock, flags);
QETH_DBF_TEXT_(trace, 4, " %02x%02x%02x",
(u8) card->thread_start_mask,
(u8) card->thread_allowed_mask,
(u8) card->thread_running_mask);
rc = (card->thread_start_mask & thread);
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
return rc;
}
static void
qeth_start_kernel_thread(struct qeth_card *card)
{
QETH_DBF_TEXT(trace , 2, "strthrd");
if (card->read.state != CH_STATE_UP &&
card->write.state != CH_STATE_UP)
return;
if (qeth_do_start_thread(card, QETH_SET_IP_THREAD))
kernel_thread(qeth_register_ip_addresses, (void *)card,SIGCHLD);
if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
kernel_thread(qeth_recover, (void *) card, SIGCHLD);
}
static void
qeth_set_intial_options(struct qeth_card *card)
{
card->options.route4.type = NO_ROUTER;
#ifdef CONFIG_QETH_IPV6
card->options.route6.type = NO_ROUTER;
#endif /* QETH_IPV6 */
card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
card->options.fake_broadcast = 0;
card->options.add_hhlen = DEFAULT_ADD_HHLEN;
card->options.fake_ll = 0;
card->options.layer2 = 0;
}
/**
* initialize channels ,card and all state machines
*/
static int
qeth_setup_card(struct qeth_card *card)
{
QETH_DBF_TEXT(setup, 2, "setupcrd");
QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
card->read.state = CH_STATE_DOWN;
card->write.state = CH_STATE_DOWN;
card->data.state = CH_STATE_DOWN;
card->state = CARD_STATE_DOWN;
card->lan_online = 0;
card->use_hard_stop = 0;
card->dev = NULL;
#ifdef CONFIG_QETH_VLAN
spin_lock_init(&card->vlanlock);
card->vlangrp = NULL;
#endif
spin_lock_init(&card->ip_lock);
spin_lock_init(&card->thread_mask_lock);
card->thread_start_mask = 0;
card->thread_allowed_mask = 0;
card->thread_running_mask = 0;
INIT_WORK(&card->kernel_thread_starter,
(void *)qeth_start_kernel_thread,card);
INIT_LIST_HEAD(&card->ip_list);
card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
if (!card->ip_tbd_list) {
QETH_DBF_TEXT(setup, 0, "iptbdnom");
return -ENOMEM;
}
INIT_LIST_HEAD(card->ip_tbd_list);
INIT_LIST_HEAD(&card->cmd_waiter_list);
init_waitqueue_head(&card->wait_q);
/* intial options */
qeth_set_intial_options(card);
/* IP address takeover */
INIT_LIST_HEAD(&card->ipato.entries);
card->ipato.enabled = 0;
card->ipato.invert4 = 0;
card->ipato.invert6 = 0;
/* init QDIO stuff */
qeth_init_qdio_info(card);
return 0;
}
static int
is_1920_device (struct qeth_card *card)
{
int single_queue = 0;
struct ccw_device *ccwdev;
struct channelPath_dsc {
u8 flags;
u8 lsn;
u8 desc;
u8 chpid;
u8 swla;
u8 zeroes;
u8 chla;
u8 chpp;
} *chp_dsc;
QETH_DBF_TEXT(setup, 2, "chk_1920");
ccwdev = card->data.ccwdev;
chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
if (chp_dsc != NULL) {
/* CHPP field bit 6 == 1 -> single queue */
single_queue = ((chp_dsc->chpp & 0x02) == 0x02);
kfree(chp_dsc);
}
QETH_DBF_TEXT_(setup, 2, "rc:%x", single_queue);
return single_queue;
}
static int
qeth_determine_card_type(struct qeth_card *card)
{
int i = 0;
QETH_DBF_TEXT(setup, 2, "detcdtyp");
while (known_devices[i][4]) {
if ((CARD_RDEV(card)->id.dev_type == known_devices[i][2]) &&
(CARD_RDEV(card)->id.dev_model == known_devices[i][3])) {
card->info.type = known_devices[i][4];
if (is_1920_device(card)) {
PRINT_INFO("Priority Queueing not able "
"due to hardware limitations!\n");
card->qdio.no_out_queues = 1;
card->qdio.default_out_queue = 0;
} else {
card->qdio.no_out_queues = known_devices[i][8];
}
card->info.is_multicast_different = known_devices[i][9];
return 0;
}
i++;
}
card->info.type = QETH_CARD_TYPE_UNKNOWN;
PRINT_ERR("unknown card type on device %s\n", CARD_BUS_ID(card));
return -ENOENT;
}
static int
qeth_probe_device(struct ccwgroup_device *gdev)
{
struct qeth_card *card;
struct device *dev;
unsigned long flags;
int rc;
QETH_DBF_TEXT(setup, 2, "probedev");
dev = &gdev->dev;
if (!get_device(dev))
return -ENODEV;
card = qeth_alloc_card();
if (!card) {
put_device(dev);
QETH_DBF_TEXT_(setup, 2, "1err%d", -ENOMEM);
return -ENOMEM;
}
card->read.ccwdev = gdev->cdev[0];
card->write.ccwdev = gdev->cdev[1];
card->data.ccwdev = gdev->cdev[2];
if ((rc = qeth_setup_card(card))){
QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
put_device(dev);
qeth_free_card(card);
return rc;
}
gdev->dev.driver_data = card;
card->gdev = gdev;
gdev->cdev[0]->handler = qeth_irq;
gdev->cdev[1]->handler = qeth_irq;
gdev->cdev[2]->handler = qeth_irq;
rc = qeth_create_device_attributes(dev);
if (rc) {
put_device(dev);
qeth_free_card(card);
return rc;
}
if ((rc = qeth_determine_card_type(card))){
PRINT_WARN("%s: not a valid card type\n", __func__);
QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
put_device(dev);
qeth_free_card(card);
return rc;
}
/* insert into our internal list */
write_lock_irqsave(&qeth_card_list.rwlock, flags);
list_add_tail(&card->list, &qeth_card_list.list);
write_unlock_irqrestore(&qeth_card_list.rwlock, flags);
return rc;
}
static int
qeth_get_unitaddr(struct qeth_card *card)
{
int length;
char *prcd;
int rc;
QETH_DBF_TEXT(setup, 2, "getunit");
rc = read_conf_data(CARD_DDEV(card), (void **) &prcd, &length);
if (rc) {
PRINT_ERR("read_conf_data for device %s returned %i\n",
CARD_DDEV_ID(card), rc);
return rc;
}
card->info.chpid = prcd[30];
card->info.unit_addr2 = prcd[31];
card->info.cula = prcd[63];
card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
(prcd[0x11] == _ascebc['M']));
return 0;
}
static void
qeth_init_tokens(struct qeth_card *card)
{
card->token.issuer_rm_w = 0x00010103UL;
card->token.cm_filter_w = 0x00010108UL;
card->token.cm_connection_w = 0x0001010aUL;
card->token.ulp_filter_w = 0x0001010bUL;
card->token.ulp_connection_w = 0x0001010dUL;
}
static inline __u16
raw_devno_from_bus_id(char *id)
{
id += (strlen(id) - 4);
return (__u16) simple_strtoul(id, &id, 16);
}
/**
* setup channel
*/
static void
qeth_setup_ccw(struct qeth_channel *channel,unsigned char *iob, __u32 len)
{
struct qeth_card *card;
QETH_DBF_TEXT(trace, 4, "setupccw");
card = CARD_FROM_CDEV(channel->ccwdev);
if (channel == &card->read)
memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
else
memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
channel->ccw.count = len;
channel->ccw.cda = (__u32) __pa(iob);
}
/**
* get free buffer for ccws (IDX activation, lancmds,ipassists...)
*/
static struct qeth_cmd_buffer *
__qeth_get_buffer(struct qeth_channel *channel)
{
__u8 index;
QETH_DBF_TEXT(trace, 6, "getbuff");
index = channel->io_buf_no;
do {
if (channel->iob[index].state == BUF_STATE_FREE) {
channel->iob[index].state = BUF_STATE_LOCKED;
channel->io_buf_no = (channel->io_buf_no + 1) %
QETH_CMD_BUFFER_NO;
memset(channel->iob[index].data, 0, QETH_BUFSIZE);
return channel->iob + index;
}
index = (index + 1) % QETH_CMD_BUFFER_NO;
} while(index != channel->io_buf_no);
return NULL;
}
/**
* release command buffer
*/
static void
qeth_release_buffer(struct qeth_channel *channel, struct qeth_cmd_buffer *iob)
{
unsigned long flags;
QETH_DBF_TEXT(trace, 6, "relbuff");
spin_lock_irqsave(&channel->iob_lock, flags);
memset(iob->data, 0, QETH_BUFSIZE);
iob->state = BUF_STATE_FREE;
iob->callback = qeth_send_control_data_cb;
iob->rc = 0;
spin_unlock_irqrestore(&channel->iob_lock, flags);
}
static struct qeth_cmd_buffer *
qeth_get_buffer(struct qeth_channel *channel)
{
struct qeth_cmd_buffer *buffer = NULL;
unsigned long flags;
spin_lock_irqsave(&channel->iob_lock, flags);
buffer = __qeth_get_buffer(channel);
spin_unlock_irqrestore(&channel->iob_lock, flags);
return buffer;
}
static struct qeth_cmd_buffer *
qeth_wait_for_buffer(struct qeth_channel *channel)
{
struct qeth_cmd_buffer *buffer;
wait_event(channel->wait_q,
((buffer = qeth_get_buffer(channel)) != NULL));
return buffer;
}
static void
qeth_clear_cmd_buffers(struct qeth_channel *channel)
{
int cnt = 0;
for (cnt=0; cnt < QETH_CMD_BUFFER_NO; cnt++)
qeth_release_buffer(channel,&channel->iob[cnt]);
channel->buf_no = 0;
channel->io_buf_no = 0;
}
/**
* start IDX for read and write channel
*/
static int
qeth_idx_activate_get_answer(struct qeth_channel *channel,
void (*idx_reply_cb)(struct qeth_channel *,
struct qeth_cmd_buffer *))
{
struct qeth_cmd_buffer *iob;
unsigned long flags;
int rc;
struct qeth_card *card;
QETH_DBF_TEXT(setup, 2, "idxanswr");
card = CARD_FROM_CDEV(channel->ccwdev);
iob = qeth_get_buffer(channel);
iob->callback = idx_reply_cb;
memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
channel->ccw.count = QETH_BUFSIZE;
channel->ccw.cda = (__u32) __pa(iob->data);
wait_event(card->wait_q,
atomic_compare_and_swap(0,1,&channel->irq_pending) == 0);
QETH_DBF_TEXT(setup, 6, "noirqpnd");
spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
rc = ccw_device_start(channel->ccwdev,
&channel->ccw,(addr_t) iob, 0, 0);
spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
if (rc) {
PRINT_ERR("qeth: Error2 in activating channel rc=%d\n",rc);
QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
atomic_set(&channel->irq_pending, 0);
wake_up(&card->wait_q);
return rc;
}
rc = wait_event_interruptible_timeout(card->wait_q,
channel->state == CH_STATE_UP, QETH_TIMEOUT);
if (rc == -ERESTARTSYS)
return rc;
if (channel->state != CH_STATE_UP){
rc = -ETIME;
QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
qeth_clear_cmd_buffers(channel);
} else
rc = 0;
return rc;
}
static int
qeth_idx_activate_channel(struct qeth_channel *channel,
void (*idx_reply_cb)(struct qeth_channel *,
struct qeth_cmd_buffer *))
{
struct qeth_card *card;
struct qeth_cmd_buffer *iob;
unsigned long flags;
__u16 temp;
int rc;
card = CARD_FROM_CDEV(channel->ccwdev);
QETH_DBF_TEXT(setup, 2, "idxactch");
iob = qeth_get_buffer(channel);
iob->callback = idx_reply_cb;
memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
channel->ccw.count = IDX_ACTIVATE_SIZE;
channel->ccw.cda = (__u32) __pa(iob->data);
if (channel == &card->write) {
memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
&card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
card->seqno.trans_hdr++;
} else {
memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
&card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
}
memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
&card->token.issuer_rm_w,QETH_MPC_TOKEN_LENGTH);
memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
&card->info.func_level,sizeof(__u16));
temp = raw_devno_from_bus_id(CARD_DDEV_ID(card));
memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp, 2);
temp = (card->info.cula << 8) + card->info.unit_addr2;
memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
wait_event(card->wait_q,
atomic_compare_and_swap(0,1,&channel->irq_pending) == 0);
QETH_DBF_TEXT(setup, 6, "noirqpnd");
spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
rc = ccw_device_start(channel->ccwdev,
&channel->ccw,(addr_t) iob, 0, 0);
spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
if (rc) {
PRINT_ERR("qeth: Error1 in activating channel. rc=%d\n",rc);
QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
atomic_set(&channel->irq_pending, 0);
wake_up(&card->wait_q);
return rc;
}
rc = wait_event_interruptible_timeout(card->wait_q,
channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
if (rc == -ERESTARTSYS)
return rc;
if (channel->state != CH_STATE_ACTIVATING) {
PRINT_WARN("qeth: IDX activate timed out!\n");
QETH_DBF_TEXT_(setup, 2, "2err%d", -ETIME);
qeth_clear_cmd_buffers(channel);
return -ETIME;
}
return qeth_idx_activate_get_answer(channel,idx_reply_cb);
}
static int
qeth_peer_func_level(int level)
{
if ((level & 0xff) == 8)
return (level & 0xff) + 0x400;
if (((level >> 8) & 3) == 1)
return (level & 0xff) + 0x200;
return level;
}
static void
qeth_idx_write_cb(struct qeth_channel *channel, struct qeth_cmd_buffer *iob)
{
struct qeth_card *card;
__u16 temp;
QETH_DBF_TEXT(setup ,2, "idxwrcb");
if (channel->state == CH_STATE_DOWN) {
channel->state = CH_STATE_ACTIVATING;
goto out;
}
card = CARD_FROM_CDEV(channel->ccwdev);
if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
PRINT_ERR("IDX_ACTIVATE on write channel device %s: negative "
"reply\n", CARD_WDEV_ID(card));
goto out;
}
memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
PRINT_WARN("IDX_ACTIVATE on write channel device %s: "
"function level mismatch "
"(sent: 0x%x, received: 0x%x)\n",
CARD_WDEV_ID(card), card->info.func_level, temp);
goto out;
}
channel->state = CH_STATE_UP;
out:
qeth_release_buffer(channel, iob);
}
static int
qeth_check_idx_response(unsigned char *buffer)
{
if (!buffer)
return 0;
QETH_DBF_HEX(control, 2, buffer, QETH_DBF_CONTROL_LEN);
if ((buffer[2] & 0xc0) == 0xc0) {
PRINT_WARN("received an IDX TERMINATE "
"with cause code 0x%02x%s\n",
buffer[4],
((buffer[4] == 0x22) ?
" -- try another portname" : ""));
QETH_DBF_TEXT(trace, 2, "ckidxres");
QETH_DBF_TEXT(trace, 2, " idxterm");
QETH_DBF_TEXT_(trace, 2, " rc%d", -EIO);
return -EIO;
}
return 0;
}
static void
qeth_idx_read_cb(struct qeth_channel *channel, struct qeth_cmd_buffer *iob)
{
struct qeth_card *card;
__u16 temp;
QETH_DBF_TEXT(setup , 2, "idxrdcb");
if (channel->state == CH_STATE_DOWN) {
channel->state = CH_STATE_ACTIVATING;
goto out;
}
card = CARD_FROM_CDEV(channel->ccwdev);
if (qeth_check_idx_response(iob->data)) {
goto out;
}
if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
PRINT_ERR("IDX_ACTIVATE on read channel device %s: negative "
"reply\n", CARD_RDEV_ID(card));
goto out;
}
/**
* temporary fix for microcode bug
* to revert it,replace OR by AND
*/
if ( (!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
(card->info.type == QETH_CARD_TYPE_OSAE) )
card->info.portname_required = 1;
memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
if (temp != qeth_peer_func_level(card->info.func_level)) {
PRINT_WARN("IDX_ACTIVATE on read channel device %s: function "
"level mismatch (sent: 0x%x, received: 0x%x)\n",
CARD_RDEV_ID(card), card->info.func_level, temp);
goto out;
}
memcpy(&card->token.issuer_rm_r,
QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
QETH_MPC_TOKEN_LENGTH);
memcpy(&card->info.mcl_level[0],
QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
channel->state = CH_STATE_UP;
out:
qeth_release_buffer(channel,iob);
}
static int
qeth_issue_next_read(struct qeth_card *card)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(trace,5,"issnxrd");
if (card->read.state != CH_STATE_UP)
return -EIO;
iob = qeth_get_buffer(&card->read);
if (!iob) {
PRINT_WARN("issue_next_read failed: no iob available!\n");
return -ENOMEM;
}
qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
wait_event(card->wait_q,
atomic_compare_and_swap(0,1,&card->read.irq_pending) == 0);
QETH_DBF_TEXT(trace, 6, "noirqpnd");
rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
(addr_t) iob, 0, 0);
if (rc) {
PRINT_ERR("Error in starting next read ccw! rc=%i\n", rc);
atomic_set(&card->read.irq_pending, 0);
qeth_schedule_recovery(card);
wake_up(&card->wait_q);
}
return rc;
}
static struct qeth_reply *
qeth_alloc_reply(struct qeth_card *card)
{
struct qeth_reply *reply;
reply = kmalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
if (reply){
memset(reply, 0, sizeof(struct qeth_reply));
atomic_set(&reply->refcnt, 1);
reply->card = card;
};
return reply;
}
static void
qeth_get_reply(struct qeth_reply *reply)
{
WARN_ON(atomic_read(&reply->refcnt) <= 0);
atomic_inc(&reply->refcnt);
}
static void
qeth_put_reply(struct qeth_reply *reply)
{
WARN_ON(atomic_read(&reply->refcnt) <= 0);
if (atomic_dec_and_test(&reply->refcnt))
kfree(reply);
}
static void
qeth_cmd_timeout(unsigned long data)
{
struct qeth_reply *reply, *list_reply, *r;
unsigned long flags;
reply = (struct qeth_reply *) data;
spin_lock_irqsave(&reply->card->lock, flags);
list_for_each_entry_safe(list_reply, r,
&reply->card->cmd_waiter_list, list) {
if (reply == list_reply){
qeth_get_reply(reply);
list_del_init(&reply->list);
spin_unlock_irqrestore(&reply->card->lock, flags);
reply->rc = -ETIME;
reply->received = 1;
wake_up(&reply->wait_q);
qeth_put_reply(reply);
return;
}
}
spin_unlock_irqrestore(&reply->card->lock, flags);
}
static void
qeth_reset_ip_addresses(struct qeth_card *card)
{
QETH_DBF_TEXT(trace, 2, "rstipadd");
qeth_clear_ip_list(card, 0, 1);
/* this function will also schedule the SET_IP_THREAD */
qeth_set_multicast_list(card->dev);
}
static struct qeth_ipa_cmd *
qeth_check_ipa_data(struct qeth_card *card, struct qeth_cmd_buffer *iob)
{
struct qeth_ipa_cmd *cmd = NULL;
QETH_DBF_TEXT(trace,5,"chkipad");
if (IS_IPA(iob->data)){
cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
if (IS_IPA_REPLY(cmd))
return cmd;
else {
switch (cmd->hdr.command) {
case IPA_CMD_STOPLAN:
PRINT_WARN("Link failure on %s (CHPID 0x%X) - "
"there is a network problem or "
"someone pulled the cable or "
"disabled the port.\n",
QETH_CARD_IFNAME(card),
card->info.chpid);
card->lan_online = 0;
netif_carrier_off(card->dev);
return NULL;
case IPA_CMD_STARTLAN:
PRINT_INFO("Link reestablished on %s "
"(CHPID 0x%X). Scheduling "
"IP address reset.\n",
QETH_CARD_IFNAME(card),
card->info.chpid);
card->lan_online = 1;
netif_carrier_on(card->dev);
qeth_reset_ip_addresses(card);
return NULL;
case IPA_CMD_REGISTER_LOCAL_ADDR:
QETH_DBF_TEXT(trace,3, "irla");
break;
case IPA_CMD_UNREGISTER_LOCAL_ADDR:
QETH_DBF_TEXT(trace,3, "urla");
break;
default:
PRINT_WARN("Received data is IPA "
"but not a reply!\n");
break;
}
}
}
return cmd;
}
/**
* wake all waiting ipa commands
*/
static void
qeth_clear_ipacmd_list(struct qeth_card *card)
{
struct qeth_reply *reply, *r;
unsigned long flags;
QETH_DBF_TEXT(trace, 4, "clipalst");
spin_lock_irqsave(&card->lock, flags);
list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
qeth_get_reply(reply);
reply->rc = -EIO;
reply->received = 1;
list_del_init(&reply->list);
wake_up(&reply->wait_q);
qeth_put_reply(reply);
}
spin_unlock_irqrestore(&card->lock, flags);
}
static void
qeth_send_control_data_cb(struct qeth_channel *channel,
struct qeth_cmd_buffer *iob)
{
struct qeth_card *card;
struct qeth_reply *reply, *r;
struct qeth_ipa_cmd *cmd;
unsigned long flags;
int keep_reply;
QETH_DBF_TEXT(trace,4,"sndctlcb");
card = CARD_FROM_CDEV(channel->ccwdev);
if (qeth_check_idx_response(iob->data)) {
qeth_clear_ipacmd_list(card);
qeth_schedule_recovery(card);
goto out;
}
cmd = qeth_check_ipa_data(card, iob);
if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
goto out;
spin_lock_irqsave(&card->lock, flags);
list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
((cmd) && (reply->seqno == cmd->hdr.seqno))) {
qeth_get_reply(reply);
list_del_init(&reply->list);
spin_unlock_irqrestore(&card->lock, flags);
keep_reply = 0;
if (reply->callback != NULL) {
if (cmd) {
reply->offset = (__u16)((char*)cmd -
(char *)iob->data);
keep_reply = reply->callback(card,
reply,
(unsigned long)cmd);
}
else
keep_reply = reply->callback(card,
reply,
(unsigned long)iob);
}
if (cmd)
reply->rc = (u16) cmd->hdr.return_code;
else if (iob->rc)
reply->rc = iob->rc;
if (keep_reply) {
spin_lock_irqsave(&card->lock, flags);
list_add_tail(&reply->list,
&card->cmd_waiter_list);
spin_unlock_irqrestore(&card->lock, flags);
} else {
reply->received = 1;
wake_up(&reply->wait_q);
}
qeth_put_reply(reply);
goto out;
}
}
spin_unlock_irqrestore(&card->lock, flags);
out:
memcpy(&card->seqno.pdu_hdr_ack,
QETH_PDU_HEADER_SEQ_NO(iob->data),
QETH_SEQ_NO_LENGTH);
qeth_release_buffer(channel,iob);
}
static int
qeth_send_control_data(struct qeth_card *card, int len,
struct qeth_cmd_buffer *iob,
int (*reply_cb)
(struct qeth_card *, struct qeth_reply*, unsigned long),
void *reply_param)
{
int rc;
unsigned long flags;
struct qeth_reply *reply;
struct timer_list timer;
QETH_DBF_TEXT(trace, 2, "sendctl");
qeth_setup_ccw(&card->write,iob->data,len);
memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
&card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
card->seqno.trans_hdr++;
memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
&card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
card->seqno.pdu_hdr++;
memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
&card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
iob->callback = qeth_release_buffer;
reply = qeth_alloc_reply(card);
if (!reply) {
PRINT_WARN("Could no alloc qeth_reply!\n");
return -ENOMEM;
}
reply->callback = reply_cb;
reply->param = reply_param;
if (card->state == CARD_STATE_DOWN)
reply->seqno = QETH_IDX_COMMAND_SEQNO;
else
reply->seqno = card->seqno.ipa++;
init_timer(&timer);
timer.function = qeth_cmd_timeout;
timer.data = (unsigned long) reply;
if (IS_IPA(iob->data))
timer.expires = jiffies + QETH_IPA_TIMEOUT;
else
timer.expires = jiffies + QETH_TIMEOUT;
init_waitqueue_head(&reply->wait_q);
spin_lock_irqsave(&card->lock, flags);
list_add_tail(&reply->list, &card->cmd_waiter_list);
spin_unlock_irqrestore(&card->lock, flags);
QETH_DBF_HEX(control, 2, iob->data, QETH_DBF_CONTROL_LEN);
wait_event(card->wait_q,
atomic_compare_and_swap(0,1,&card->write.irq_pending) == 0);
QETH_DBF_TEXT(trace, 6, "noirqpnd");
spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
(addr_t) iob, 0, 0);
spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
if (rc){
PRINT_WARN("qeth_send_control_data: "
"ccw_device_start rc = %i\n", rc);
QETH_DBF_TEXT_(trace, 2, " err%d", rc);
spin_lock_irqsave(&card->lock, flags);
list_del_init(&reply->list);
qeth_put_reply(reply);
spin_unlock_irqrestore(&card->lock, flags);
qeth_release_buffer(iob->channel, iob);
atomic_set(&card->write.irq_pending, 0);
wake_up(&card->wait_q);
return rc;
}
add_timer(&timer);
wait_event(reply->wait_q, reply->received);
del_timer_sync(&timer);
rc = reply->rc;
qeth_put_reply(reply);
return rc;
}
static int
qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
int (*reply_cb)
(struct qeth_card *,struct qeth_reply*, unsigned long),
void *reply_param)
{
int rc;
char prot_type;
QETH_DBF_TEXT(trace,4,"sendipa");
memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
if (card->options.layer2)
prot_type = QETH_PROT_LAYER2;
else
prot_type = QETH_PROT_TCPIP;
memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data),&prot_type,1);
memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
&card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
rc = qeth_send_control_data(card, IPA_CMD_LENGTH, iob,
reply_cb, reply_param);
return rc;
}
static int
qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data)
{
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(setup, 2, "cmenblcb");
iob = (struct qeth_cmd_buffer *) data;
memcpy(&card->token.cm_filter_r,
QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
QETH_MPC_TOKEN_LENGTH);
QETH_DBF_TEXT_(setup, 2, " rc%d", iob->rc);
return 0;
}
static int
qeth_cm_enable(struct qeth_card *card)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(setup,2,"cmenable");
iob = qeth_wait_for_buffer(&card->write);
memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
&card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
&card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
qeth_cm_enable_cb, NULL);
return rc;
}
static int
qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data)
{
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(setup, 2, "cmsetpcb");
iob = (struct qeth_cmd_buffer *) data;
memcpy(&card->token.cm_connection_r,
QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
QETH_MPC_TOKEN_LENGTH);
QETH_DBF_TEXT_(setup, 2, " rc%d", iob->rc);
return 0;
}
static int
qeth_cm_setup(struct qeth_card *card)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(setup,2,"cmsetup");
iob = qeth_wait_for_buffer(&card->write);
memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
&card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
&card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
&card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
qeth_cm_setup_cb, NULL);
return rc;
}
static int
qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data)
{
__u16 mtu, framesize;
__u16 len;
__u8 link_type;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(setup, 2, "ulpenacb");
iob = (struct qeth_cmd_buffer *) data;
memcpy(&card->token.ulp_filter_r,
QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
QETH_MPC_TOKEN_LENGTH);
if (qeth_get_mtu_out_of_mpc(card->info.type)) {
memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
mtu = qeth_get_mtu_outof_framesize(framesize);
if (!mtu) {
iob->rc = -EINVAL;
QETH_DBF_TEXT_(setup, 2, " rc%d", iob->rc);
return 0;
}
card->info.max_mtu = mtu;
card->info.initial_mtu = mtu;
card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
} else {
card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
}
memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
memcpy(&link_type,
QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
card->info.link_type = link_type;
} else
card->info.link_type = 0;
QETH_DBF_TEXT_(setup, 2, " rc%d", iob->rc);
return 0;
}
static int
qeth_ulp_enable(struct qeth_card *card)
{
int rc;
char prot_type;
struct qeth_cmd_buffer *iob;
/*FIXME: trace view callbacks*/
QETH_DBF_TEXT(setup,2,"ulpenabl");
iob = qeth_wait_for_buffer(&card->write);
memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
*(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
(__u8) card->info.portno;
if (card->options.layer2)
prot_type = QETH_PROT_LAYER2;
else
prot_type = QETH_PROT_TCPIP;
memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data),&prot_type,1);
memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
&card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
&card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
card->info.portname, 9);
rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
qeth_ulp_enable_cb, NULL);
return rc;
}
static inline __u16
__raw_devno_from_bus_id(char *id)
{
id += (strlen(id) - 4);
return (__u16) simple_strtoul(id, &id, 16);
}
static int
qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data)
{
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(setup, 2, "ulpstpcb");
iob = (struct qeth_cmd_buffer *) data;
memcpy(&card->token.ulp_connection_r,
QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
QETH_MPC_TOKEN_LENGTH);
QETH_DBF_TEXT_(setup, 2, " rc%d", iob->rc);
return 0;
}
static int
qeth_ulp_setup(struct qeth_card *card)
{
int rc;
__u16 temp;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(setup,2,"ulpsetup");
iob = qeth_wait_for_buffer(&card->write);
memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
&card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
&card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
&card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
temp = __raw_devno_from_bus_id(CARD_DDEV_ID(card));
memcpy(QETH_ULP_SETUP_CUA(iob->data), &temp, 2);
temp = (card->info.cula << 8) + card->info.unit_addr2;
memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
qeth_ulp_setup_cb, NULL);
return rc;
}
static inline int
qeth_check_for_inbound_error(struct qeth_qdio_buffer *buf,
unsigned int qdio_error,
unsigned int siga_error)
{
int rc = 0;
if (qdio_error || siga_error) {
QETH_DBF_TEXT(trace, 2, "qdinerr");
QETH_DBF_TEXT(qerr, 2, "qdinerr");
QETH_DBF_TEXT_(qerr, 2, " F15=%02X",
buf->buffer->element[15].flags & 0xff);
QETH_DBF_TEXT_(qerr, 2, " F14=%02X",
buf->buffer->element[14].flags & 0xff);
QETH_DBF_TEXT_(qerr, 2, " qerr=%X", qdio_error);
QETH_DBF_TEXT_(qerr, 2, " serr=%X", siga_error);
rc = 1;
}
return rc;
}
static inline struct sk_buff *
qeth_get_skb(unsigned int length)
{
struct sk_buff* skb;
#ifdef CONFIG_QETH_VLAN
if ((skb = dev_alloc_skb(length + VLAN_HLEN)))
skb_reserve(skb, VLAN_HLEN);
#else
skb = dev_alloc_skb(length);
#endif
return skb;
}
static inline struct sk_buff *
qeth_get_next_skb(struct qeth_card *card, struct qdio_buffer *buffer,
struct qdio_buffer_element **__element, int *__offset,
struct qeth_hdr **hdr)
{
struct qdio_buffer_element *element = *__element;
int offset = *__offset;
struct sk_buff *skb = NULL;
int skb_len;
void *data_ptr;
int data_len;
QETH_DBF_TEXT(trace,6,"nextskb");
/* qeth_hdr must not cross element boundaries */
if (element->length < offset + sizeof(struct qeth_hdr)){
if (qeth_is_last_sbale(element))
return NULL;
element++;
offset = 0;
if (element->length < sizeof(struct qeth_hdr))
return NULL;
}
*hdr = element->addr + offset;
offset += sizeof(struct qeth_hdr);
if (card->options.layer2)
skb_len = (*hdr)->hdr.l2.pkt_length;
else
skb_len = (*hdr)->hdr.l3.length;
if (!skb_len)
return NULL;
if (card->options.fake_ll){
if(card->dev->type == ARPHRD_IEEE802_TR){
if (!(skb = qeth_get_skb(skb_len+QETH_FAKE_LL_LEN_TR)))
goto no_mem;
skb_reserve(skb,QETH_FAKE_LL_LEN_TR);
} else {
if (!(skb = qeth_get_skb(skb_len+QETH_FAKE_LL_LEN_ETH)))
goto no_mem;
skb_reserve(skb,QETH_FAKE_LL_LEN_ETH);
}
} else if (!(skb = qeth_get_skb(skb_len)))
goto no_mem;
data_ptr = element->addr + offset;
while (skb_len) {
data_len = min(skb_len, (int)(element->length - offset));
if (data_len)
memcpy(skb_put(skb, data_len), data_ptr, data_len);
skb_len -= data_len;
if (skb_len){
if (qeth_is_last_sbale(element)){
QETH_DBF_TEXT(trace,4,"unexeob");
QETH_DBF_TEXT_(trace,4,"%s",CARD_BUS_ID(card));
QETH_DBF_TEXT(qerr,2,"unexeob");
QETH_DBF_TEXT_(qerr,2,"%s",CARD_BUS_ID(card));
QETH_DBF_HEX(misc,4,buffer,sizeof(*buffer));
dev_kfree_skb_any(skb);
card->stats.rx_errors++;
return NULL;
}
element++;
offset = 0;
data_ptr = element->addr;
} else {
offset += data_len;
}
}
*__element = element;
*__offset = offset;
return skb;
no_mem:
if (net_ratelimit()){
PRINT_WARN("No memory for packet received on %s.\n",
QETH_CARD_IFNAME(card));
QETH_DBF_TEXT(trace,2,"noskbmem");
QETH_DBF_TEXT_(trace,2,"%s",CARD_BUS_ID(card));
}
card->stats.rx_dropped++;
return NULL;
}
static inline unsigned short
qeth_type_trans(struct sk_buff *skb, struct net_device *dev)
{
struct qeth_card *card;
struct ethhdr *eth;
QETH_DBF_TEXT(trace,6,"typtrans");
card = (struct qeth_card *)dev->priv;
#ifdef CONFIG_TR
if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
(card->info.link_type == QETH_LINK_TYPE_LANE_TR))
return tr_type_trans(skb,dev);
#endif /* CONFIG_TR */
skb->mac.raw = skb->data;
skb_pull(skb, ETH_HLEN );
eth = eth_hdr(skb);
if (*eth->h_dest & 1) {
if (memcmp(eth->h_dest, dev->broadcast, ETH_ALEN) == 0)
skb->pkt_type = PACKET_BROADCAST;
else
skb->pkt_type = PACKET_MULTICAST;
} else if (memcmp(eth->h_dest, dev->dev_addr, ETH_ALEN))
skb->pkt_type = PACKET_OTHERHOST;
if (ntohs(eth->h_proto) >= 1536)
return eth->h_proto;
if (*(unsigned short *) (skb->data) == 0xFFFF)
return htons(ETH_P_802_3);
return htons(ETH_P_802_2);
}
static inline void
qeth_rebuild_skb_fake_ll_tr(struct qeth_card *card, struct sk_buff *skb,
struct qeth_hdr *hdr)
{
struct trh_hdr *fake_hdr;
struct trllc *fake_llc;
struct iphdr *ip_hdr;
QETH_DBF_TEXT(trace,5,"skbfktr");
skb->mac.raw = skb->data - QETH_FAKE_LL_LEN_TR;
/* this is a fake ethernet header */
fake_hdr = (struct trh_hdr *) skb->mac.raw;
/* the destination MAC address */
switch (skb->pkt_type){
case PACKET_MULTICAST:
switch (skb->protocol){
#ifdef CONFIG_QETH_IPV6
case __constant_htons(ETH_P_IPV6):
ndisc_mc_map((struct in6_addr *)
skb->data + QETH_FAKE_LL_V6_ADDR_POS,
fake_hdr->daddr, card->dev, 0);
break;
#endif /* CONFIG_QETH_IPV6 */
case __constant_htons(ETH_P_IP):
ip_hdr = (struct iphdr *)skb->data;
ip_tr_mc_map(ip_hdr->daddr, fake_hdr->daddr);
break;
default:
memcpy(fake_hdr->daddr, card->dev->dev_addr, TR_ALEN);
}
break;
case PACKET_BROADCAST:
memset(fake_hdr->daddr, 0xff, TR_ALEN);
break;
default:
memcpy(fake_hdr->daddr, card->dev->dev_addr, TR_ALEN);
}
/* the source MAC address */
if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
memcpy(fake_hdr->saddr, &hdr->hdr.l3.dest_addr[2], TR_ALEN);
else
memset(fake_hdr->saddr, 0, TR_ALEN);
fake_hdr->rcf=0;
fake_llc = (struct trllc*)&(fake_hdr->rcf);
fake_llc->dsap = EXTENDED_SAP;
fake_llc->ssap = EXTENDED_SAP;
fake_llc->llc = UI_CMD;
fake_llc->protid[0] = 0;
fake_llc->protid[1] = 0;
fake_llc->protid[2] = 0;
fake_llc->ethertype = ETH_P_IP;
}
static inline void
qeth_rebuild_skb_fake_ll_eth(struct qeth_card *card, struct sk_buff *skb,
struct qeth_hdr *hdr)
{
struct ethhdr *fake_hdr;
struct iphdr *ip_hdr;
QETH_DBF_TEXT(trace,5,"skbfketh");
skb->mac.raw = skb->data - QETH_FAKE_LL_LEN_ETH;
/* this is a fake ethernet header */
fake_hdr = (struct ethhdr *) skb->mac.raw;
/* the destination MAC address */
switch (skb->pkt_type){
case PACKET_MULTICAST:
switch (skb->protocol){
#ifdef CONFIG_QETH_IPV6
case __constant_htons(ETH_P_IPV6):
ndisc_mc_map((struct in6_addr *)
skb->data + QETH_FAKE_LL_V6_ADDR_POS,
fake_hdr->h_dest, card->dev, 0);
break;
#endif /* CONFIG_QETH_IPV6 */
case __constant_htons(ETH_P_IP):
ip_hdr = (struct iphdr *)skb->data;
ip_eth_mc_map(ip_hdr->daddr, fake_hdr->h_dest);
break;
default:
memcpy(fake_hdr->h_dest, card->dev->dev_addr, ETH_ALEN);
}
break;
case PACKET_BROADCAST:
memset(fake_hdr->h_dest, 0xff, ETH_ALEN);
break;
default:
memcpy(fake_hdr->h_dest, card->dev->dev_addr, ETH_ALEN);
}
/* the source MAC address */
if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
memcpy(fake_hdr->h_source, &hdr->hdr.l3.dest_addr[2], ETH_ALEN);
else
memset(fake_hdr->h_source, 0, ETH_ALEN);
/* the protocol */
fake_hdr->h_proto = skb->protocol;
}
static inline void
qeth_rebuild_skb_fake_ll(struct qeth_card *card, struct sk_buff *skb,
struct qeth_hdr *hdr)
{
if (card->dev->type == ARPHRD_IEEE802_TR)
qeth_rebuild_skb_fake_ll_tr(card, skb, hdr);
else
qeth_rebuild_skb_fake_ll_eth(card, skb, hdr);
}
static inline void
qeth_rebuild_skb_vlan(struct qeth_card *card, struct sk_buff *skb,
struct qeth_hdr *hdr)
{
#ifdef CONFIG_QETH_VLAN
u16 *vlan_tag;
if (hdr->hdr.l3.ext_flags &
(QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
vlan_tag = (u16 *) skb_push(skb, VLAN_HLEN);
*vlan_tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME)?
hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
*(vlan_tag + 1) = skb->protocol;
skb->protocol = __constant_htons(ETH_P_8021Q);
}
#endif /* CONFIG_QETH_VLAN */
}
static inline __u16
qeth_layer2_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
struct qeth_hdr *hdr)
{
unsigned short vlan_id = 0;
#ifdef CONFIG_QETH_VLAN
struct vlan_hdr *vhdr;
#endif
skb->pkt_type = PACKET_HOST;
skb->protocol = qeth_type_trans(skb, skb->dev);
if (card->options.checksum_type == NO_CHECKSUMMING)
skb->ip_summed = CHECKSUM_UNNECESSARY;
else
skb->ip_summed = CHECKSUM_NONE;
#ifdef CONFIG_QETH_VLAN
if (hdr->hdr.l2.flags[2] & (QETH_LAYER2_FLAG_VLAN)) {
vhdr = (struct vlan_hdr *) skb->data;
skb->protocol =
__constant_htons(vhdr->h_vlan_encapsulated_proto);
vlan_id = hdr->hdr.l2.vlan_id;
skb_pull(skb, VLAN_HLEN);
}
#endif
return vlan_id;
}
static inline void
qeth_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
struct qeth_hdr *hdr)
{
#ifdef CONFIG_QETH_IPV6
if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
skb->pkt_type = PACKET_HOST;
skb->protocol = qeth_type_trans(skb, card->dev);
return;
}
#endif /* CONFIG_QETH_IPV6 */
skb->protocol = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
ETH_P_IP);
switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK){
case QETH_CAST_UNICAST:
skb->pkt_type = PACKET_HOST;
break;
case QETH_CAST_MULTICAST:
skb->pkt_type = PACKET_MULTICAST;
card->stats.multicast++;
break;
case QETH_CAST_BROADCAST:
skb->pkt_type = PACKET_BROADCAST;
card->stats.multicast++;
break;
case QETH_CAST_ANYCAST:
case QETH_CAST_NOCAST:
default:
skb->pkt_type = PACKET_HOST;
}
qeth_rebuild_skb_vlan(card, skb, hdr);
if (card->options.fake_ll)
qeth_rebuild_skb_fake_ll(card, skb, hdr);
else
skb->mac.raw = skb->data;
skb->ip_summed = card->options.checksum_type;
if (card->options.checksum_type == HW_CHECKSUMMING){
if ( (hdr->hdr.l3.ext_flags &
(QETH_HDR_EXT_CSUM_HDR_REQ |
QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
(QETH_HDR_EXT_CSUM_HDR_REQ |
QETH_HDR_EXT_CSUM_TRANSP_REQ) )
skb->ip_summed = CHECKSUM_UNNECESSARY;
else
skb->ip_summed = SW_CHECKSUMMING;
}
}
static inline void
qeth_process_inbound_buffer(struct qeth_card *card,
struct qeth_qdio_buffer *buf, int index)
{
struct qdio_buffer_element *element;
struct sk_buff *skb;
struct qeth_hdr *hdr;
int offset;
int rxrc;
__u16 vlan_tag = 0;
/* get first element of current buffer */
element = (struct qdio_buffer_element *)&buf->buffer->element[0];
offset = 0;
#ifdef CONFIG_QETH_PERF_STATS
card->perf_stats.bufs_rec++;
#endif
while((skb = qeth_get_next_skb(card, buf->buffer, &element,
&offset, &hdr))) {
skb->dev = card->dev;
if (hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2)
vlan_tag = qeth_layer2_rebuild_skb(card, skb, hdr);
else
qeth_rebuild_skb(card, skb, hdr);
/* is device UP ? */
if (!(card->dev->flags & IFF_UP)){
dev_kfree_skb_any(skb);
continue;
}
#ifdef CONFIG_QETH_VLAN
if (vlan_tag)
vlan_hwaccel_rx(skb, card->vlangrp, vlan_tag);
else
#endif
rxrc = netif_rx(skb);
card->dev->last_rx = jiffies;
card->stats.rx_packets++;
card->stats.rx_bytes += skb->len;
}
}
static inline struct qeth_buffer_pool_entry *
qeth_get_buffer_pool_entry(struct qeth_card *card)
{
struct qeth_buffer_pool_entry *entry;
QETH_DBF_TEXT(trace, 6, "gtbfplen");
if (!list_empty(&card->qdio.in_buf_pool.entry_list)) {
entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
struct qeth_buffer_pool_entry, list);
list_del_init(&entry->list);
return entry;
}
return NULL;
}
static inline void
qeth_init_input_buffer(struct qeth_card *card, struct qeth_qdio_buffer *buf)
{
struct qeth_buffer_pool_entry *pool_entry;
int i;
pool_entry = qeth_get_buffer_pool_entry(card);
/*
* since the buffer is accessed only from the input_tasklet
* there shouldn't be a need to synchronize; also, since we use
* the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
* buffers
*/
BUG_ON(!pool_entry);
buf->pool_entry = pool_entry;
for(i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i){
buf->buffer->element[i].length = PAGE_SIZE;
buf->buffer->element[i].addr = pool_entry->elements[i];
if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
else
buf->buffer->element[i].flags = 0;
}
buf->state = QETH_QDIO_BUF_EMPTY;
}
static inline void
qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
struct qeth_qdio_out_buffer *buf)
{
int i;
struct sk_buff *skb;
/* is PCI flag set on buffer? */
if (buf->buffer->element[0].flags & 0x40)
atomic_dec(&queue->set_pci_flags_count);
while ((skb = skb_dequeue(&buf->skb_list))){
atomic_dec(&skb->users);
dev_kfree_skb_any(skb);
}
qeth_eddp_buf_release_contexts(buf);
for(i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i){
buf->buffer->element[i].length = 0;
buf->buffer->element[i].addr = NULL;
buf->buffer->element[i].flags = 0;
}
buf->next_element_to_fill = 0;
atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
}
static inline void
qeth_queue_input_buffer(struct qeth_card *card, int index)
{
struct qeth_qdio_q *queue = card->qdio.in_q;
int count;
int i;
int rc;
QETH_DBF_TEXT(trace,6,"queinbuf");
count = (index < queue->next_buf_to_init)?
card->qdio.in_buf_pool.buf_count -
(queue->next_buf_to_init - index) :
card->qdio.in_buf_pool.buf_count -
(queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
/* only requeue at a certain threshold to avoid SIGAs */
if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)){
for (i = queue->next_buf_to_init;
i < queue->next_buf_to_init + count; ++i)
qeth_init_input_buffer(card,
&queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q]);
/*
* according to old code it should be avoided to requeue all
* 128 buffers in order to benefit from PCI avoidance.
* this function keeps at least one buffer (the buffer at
* 'index') un-requeued -> this buffer is the first buffer that
* will be requeued the next time
*/
#ifdef CONFIG_QETH_PERF_STATS
card->perf_stats.inbound_do_qdio_cnt++;
card->perf_stats.inbound_do_qdio_start_time = qeth_get_micros();
#endif
rc = do_QDIO(CARD_DDEV(card),
QDIO_FLAG_SYNC_INPUT | QDIO_FLAG_UNDER_INTERRUPT,
0, queue->next_buf_to_init, count, NULL);
#ifdef CONFIG_QETH_PERF_STATS
card->perf_stats.inbound_do_qdio_time += qeth_get_micros() -
card->perf_stats.inbound_do_qdio_start_time;
#endif
if (rc){
PRINT_WARN("qeth_queue_input_buffer's do_QDIO "
"return %i (device %s).\n",
rc, CARD_DDEV_ID(card));
QETH_DBF_TEXT(trace,2,"qinberr");
QETH_DBF_TEXT_(trace,2,"%s",CARD_BUS_ID(card));
}
queue->next_buf_to_init = (queue->next_buf_to_init + count) %
QDIO_MAX_BUFFERS_PER_Q;
}
}
static inline void
qeth_put_buffer_pool_entry(struct qeth_card *card,
struct qeth_buffer_pool_entry *entry)
{
QETH_DBF_TEXT(trace, 6, "ptbfplen");
list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
}
static void
qeth_qdio_input_handler(struct ccw_device * ccwdev, unsigned int status,
unsigned int qdio_err, unsigned int siga_err,
unsigned int queue, int first_element, int count,
unsigned long card_ptr)
{
struct net_device *net_dev;
struct qeth_card *card;
struct qeth_qdio_buffer *buffer;
int index;
int i;
QETH_DBF_TEXT(trace, 6, "qdinput");
card = (struct qeth_card *) card_ptr;
net_dev = card->dev;
#ifdef CONFIG_QETH_PERF_STATS
card->perf_stats.inbound_cnt++;
card->perf_stats.inbound_start_time = qeth_get_micros();
#endif
if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION){
QETH_DBF_TEXT(trace, 1,"qdinchk");
QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
QETH_DBF_TEXT_(trace,1,"%04X%04X",first_element,count);
QETH_DBF_TEXT_(trace,1,"%04X%04X", queue, status);
qeth_schedule_recovery(card);
return;
}
}
for (i = first_element; i < (first_element + count); ++i) {
index = i % QDIO_MAX_BUFFERS_PER_Q;
buffer = &card->qdio.in_q->bufs[index];
if (!((status == QDIO_STATUS_LOOK_FOR_ERROR) &&
qeth_check_for_inbound_error(buffer, qdio_err, siga_err)))
qeth_process_inbound_buffer(card, buffer, index);
/* clear buffer and give back to hardware */
qeth_put_buffer_pool_entry(card, buffer->pool_entry);
qeth_queue_input_buffer(card, index);
}
#ifdef CONFIG_QETH_PERF_STATS
card->perf_stats.inbound_time += qeth_get_micros() -
card->perf_stats.inbound_start_time;
#endif
}
static inline int
qeth_handle_send_error(struct qeth_card *card,
struct qeth_qdio_out_buffer *buffer,
int qdio_err, int siga_err)
{
int sbalf15 = buffer->buffer->element[15].flags & 0xff;
int cc = siga_err & 3;
QETH_DBF_TEXT(trace, 6, "hdsnderr");
switch (cc) {
case 0:
if (qdio_err){
QETH_DBF_TEXT(trace, 1,"lnkfail");
QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
QETH_DBF_TEXT_(trace,1,"%04x %02x",
(u16)qdio_err, (u8)sbalf15);
return QETH_SEND_ERROR_LINK_FAILURE;
}
return QETH_SEND_ERROR_NONE;
case 2:
if (siga_err & QDIO_SIGA_ERROR_B_BIT_SET) {
QETH_DBF_TEXT(trace, 1, "SIGAcc2B");
QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
return QETH_SEND_ERROR_KICK_IT;
}
if ((sbalf15 >= 15) && (sbalf15 <= 31))
return QETH_SEND_ERROR_RETRY;
return QETH_SEND_ERROR_LINK_FAILURE;
/* look at qdio_error and sbalf 15 */
case 1:
QETH_DBF_TEXT(trace, 1, "SIGAcc1");
QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
return QETH_SEND_ERROR_LINK_FAILURE;
case 3:
QETH_DBF_TEXT(trace, 1, "SIGAcc3");
QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
return QETH_SEND_ERROR_KICK_IT;
}
return QETH_SEND_ERROR_LINK_FAILURE;
}
void
qeth_flush_buffers(struct qeth_qdio_out_q *queue, int under_int,
int index, int count)
{
struct qeth_qdio_out_buffer *buf;
int rc;
int i;
QETH_DBF_TEXT(trace, 6, "flushbuf");
for (i = index; i < index + count; ++i) {
buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
buf->buffer->element[buf->next_element_to_fill - 1].flags |=
SBAL_FLAGS_LAST_ENTRY;
if (queue->card->info.type == QETH_CARD_TYPE_IQD)
continue;
if (!queue->do_pack){
if ((atomic_read(&queue->used_buffers) >=
(QETH_HIGH_WATERMARK_PACK -
QETH_WATERMARK_PACK_FUZZ)) &&
!atomic_read(&queue->set_pci_flags_count)){
/* it's likely that we'll go to packing
* mode soon */
atomic_inc(&queue->set_pci_flags_count);
buf->buffer->element[0].flags |= 0x40;
}
} else {
if (!atomic_read(&queue->set_pci_flags_count)){
/*
* there's no outstanding PCI any more, so we
* have to request a PCI to be sure the the PCI
* will wake at some time in the future then we
* can flush packed buffers that might still be
* hanging around, which can happen if no
* further send was requested by the stack
*/
atomic_inc(&queue->set_pci_flags_count);
buf->buffer->element[0].flags |= 0x40;
}
}
}
queue->card->dev->trans_start = jiffies;
#ifdef CONFIG_QETH_PERF_STATS
queue->card->perf_stats.outbound_do_qdio_cnt++;
queue->card->perf_stats.outbound_do_qdio_start_time = qeth_get_micros();
#endif
if (under_int)
rc = do_QDIO(CARD_DDEV(queue->card),
QDIO_FLAG_SYNC_OUTPUT | QDIO_FLAG_UNDER_INTERRUPT,
queue->queue_no, index, count, NULL);
else
rc = do_QDIO(CARD_DDEV(queue->card), QDIO_FLAG_SYNC_OUTPUT,
queue->queue_no, index, count, NULL);
#ifdef CONFIG_QETH_PERF_STATS
queue->card->perf_stats.outbound_do_qdio_time += qeth_get_micros() -
queue->card->perf_stats.outbound_do_qdio_start_time;
#endif
if (rc){
QETH_DBF_SPRINTF(trace, 0, "qeth_flush_buffers: do_QDIO "
"returned error (%i) on device %s.",
rc, CARD_DDEV_ID(queue->card));
QETH_DBF_TEXT(trace, 2, "flushbuf");
QETH_DBF_TEXT_(trace, 2, " err%d", rc);
queue->card->stats.tx_errors += count;
/* this must not happen under normal circumstances. if it
* happens something is really wrong -> recover */
qeth_schedule_recovery(queue->card);
return;
}
atomic_add(count, &queue->used_buffers);
#ifdef CONFIG_QETH_PERF_STATS
queue->card->perf_stats.bufs_sent += count;
#endif
}
/*
* Switched to packing state if the number of used buffers on a queue
* reaches a certain limit.
*/
static inline void
qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
{
if (!queue->do_pack) {
if (atomic_read(&queue->used_buffers)
>= QETH_HIGH_WATERMARK_PACK){
/* switch non-PACKING -> PACKING */
QETH_DBF_TEXT(trace, 6, "np->pack");
#ifdef CONFIG_QETH_PERF_STATS
queue->card->perf_stats.sc_dp_p++;
#endif
queue->do_pack = 1;
}
}
}
/*
* Switches from packing to non-packing mode. If there is a packing
* buffer on the queue this buffer will be prepared to be flushed.
* In that case 1 is returned to inform the caller. If no buffer
* has to be flushed, zero is returned.
*/
static inline int
qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
{
struct qeth_qdio_out_buffer *buffer;
int flush_count = 0;
if (queue->do_pack) {
if (atomic_read(&queue->used_buffers)
<= QETH_LOW_WATERMARK_PACK) {
/* switch PACKING -> non-PACKING */
QETH_DBF_TEXT(trace, 6, "pack->np");
#ifdef CONFIG_QETH_PERF_STATS
queue->card->perf_stats.sc_p_dp++;
#endif
queue->do_pack = 0;
/* flush packing buffers */
buffer = &queue->bufs[queue->next_buf_to_fill];
if ((atomic_read(&buffer->state) ==
QETH_QDIO_BUF_EMPTY) &&
(buffer->next_element_to_fill > 0)) {
atomic_set(&buffer->state,QETH_QDIO_BUF_PRIMED);
flush_count++;
queue->next_buf_to_fill =
(queue->next_buf_to_fill + 1) %
QDIO_MAX_BUFFERS_PER_Q;
}
}
}
return flush_count;
}
/*
* Called to flush a packing buffer if no more pci flags are on the queue.
* Checks if there is a packing buffer and prepares it to be flushed.
* In that case returns 1, otherwise zero.
*/
static inline int
qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
{
struct qeth_qdio_out_buffer *buffer;
buffer = &queue->bufs[queue->next_buf_to_fill];
if((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
(buffer->next_element_to_fill > 0)){
/* it's a packing buffer */
atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
queue->next_buf_to_fill =
(queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
return 1;
}
return 0;
}
static inline void
qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
{
int index;
int flush_cnt = 0;
int q_was_packing = 0;
/*
* check if weed have to switch to non-packing mode or if
* we have to get a pci flag out on the queue
*/
if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
!atomic_read(&queue->set_pci_flags_count)){
if (atomic_swap(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
QETH_OUT_Q_UNLOCKED) {
/*
* If we get in here, there was no action in
* do_send_packet. So, we check if there is a
* packing buffer to be flushed here.
*/
netif_stop_queue(queue->card->dev);
index = queue->next_buf_to_fill;
q_was_packing = queue->do_pack;
flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
if (!flush_cnt &&
!atomic_read(&queue->set_pci_flags_count))
flush_cnt +=
qeth_flush_buffers_on_no_pci(queue);
#ifdef CONFIG_QETH_PERF_STATS
if (q_was_packing)
queue->card->perf_stats.bufs_sent_pack +=
flush_cnt;
#endif
if (flush_cnt)
qeth_flush_buffers(queue, 1, index, flush_cnt);
atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
}
}
}
static void
qeth_qdio_output_handler(struct ccw_device * ccwdev, unsigned int status,
unsigned int qdio_error, unsigned int siga_error,
unsigned int __queue, int first_element, int count,
unsigned long card_ptr)
{
struct qeth_card *card = (struct qeth_card *) card_ptr;
struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
struct qeth_qdio_out_buffer *buffer;
int i;
QETH_DBF_TEXT(trace, 6, "qdouhdl");
if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION){
QETH_DBF_SPRINTF(trace, 2, "On device %s: "
"received active check "
"condition (0x%08x).",
CARD_BUS_ID(card), status);
QETH_DBF_TEXT(trace, 2, "chkcond");
QETH_DBF_TEXT_(trace, 2, "%08x", status);
netif_stop_queue(card->dev);
qeth_schedule_recovery(card);
return;
}
}
#ifdef CONFIG_QETH_PERF_STATS
card->perf_stats.outbound_handler_cnt++;
card->perf_stats.outbound_handler_start_time = qeth_get_micros();
#endif
for(i = first_element; i < (first_element + count); ++i){
buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
/*we only handle the KICK_IT error by doing a recovery */
if (qeth_handle_send_error(card, buffer, qdio_error, siga_error)
== QETH_SEND_ERROR_KICK_IT){
netif_stop_queue(card->dev);
qeth_schedule_recovery(card);
return;
}
qeth_clear_output_buffer(queue, buffer);
}
atomic_sub(count, &queue->used_buffers);
/* check if we need to do something on this outbound queue */
if (card->info.type != QETH_CARD_TYPE_IQD)
qeth_check_outbound_queue(queue);
netif_wake_queue(queue->card->dev);
#ifdef CONFIG_QETH_PERF_STATS
card->perf_stats.outbound_handler_time += qeth_get_micros() -
card->perf_stats.outbound_handler_start_time;
#endif
}
static void
qeth_create_qib_param_field(struct qeth_card *card, char *param_field)
{
param_field[0] = _ascebc['P'];
param_field[1] = _ascebc['C'];
param_field[2] = _ascebc['I'];
param_field[3] = _ascebc['T'];
*((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
*((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
*((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
}
static void
qeth_create_qib_param_field_blkt(struct qeth_card *card, char *param_field)
{
param_field[16] = _ascebc['B'];
param_field[17] = _ascebc['L'];
param_field[18] = _ascebc['K'];
param_field[19] = _ascebc['T'];
*((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
*((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
*((unsigned int *) (&param_field[28])) = card->info.blkt.inter_packet_jumbo;
}
static void
qeth_initialize_working_pool_list(struct qeth_card *card)
{
struct qeth_buffer_pool_entry *entry;
QETH_DBF_TEXT(trace,5,"inwrklst");
list_for_each_entry(entry,
&card->qdio.init_pool.entry_list, init_list) {
qeth_put_buffer_pool_entry(card,entry);
}
}
static void
qeth_clear_working_pool_list(struct qeth_card *card)
{
struct qeth_buffer_pool_entry *pool_entry, *tmp;
QETH_DBF_TEXT(trace,5,"clwrklst");
list_for_each_entry_safe(pool_entry, tmp,
&card->qdio.in_buf_pool.entry_list, list){
list_del(&pool_entry->list);
}
}
static void
qeth_free_buffer_pool(struct qeth_card *card)
{
struct qeth_buffer_pool_entry *pool_entry, *tmp;
int i=0;
QETH_DBF_TEXT(trace,5,"freepool");
list_for_each_entry_safe(pool_entry, tmp,
&card->qdio.init_pool.entry_list, init_list){
for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
free_page((unsigned long)pool_entry->elements[i]);
list_del(&pool_entry->init_list);
kfree(pool_entry);
}
}
static int
qeth_alloc_buffer_pool(struct qeth_card *card)
{
struct qeth_buffer_pool_entry *pool_entry;
void *ptr;
int i, j;
QETH_DBF_TEXT(trace,5,"alocpool");
for (i = 0; i < card->qdio.init_pool.buf_count; ++i){
pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
if (!pool_entry){
qeth_free_buffer_pool(card);
return -ENOMEM;
}
for(j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j){
ptr = (void *) __get_free_page(GFP_KERNEL);
if (!ptr) {
while (j > 0)
free_page((unsigned long)
pool_entry->elements[--j]);
kfree(pool_entry);
qeth_free_buffer_pool(card);
return -ENOMEM;
}
pool_entry->elements[j] = ptr;
}
list_add(&pool_entry->init_list,
&card->qdio.init_pool.entry_list);
}
return 0;
}
int
qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
{
QETH_DBF_TEXT(trace, 2, "realcbp");
if ((card->state != CARD_STATE_DOWN) &&
(card->state != CARD_STATE_RECOVER))
return -EPERM;
/* TODO: steel/add buffers from/to a running card's buffer pool (?) */
qeth_clear_working_pool_list(card);
qeth_free_buffer_pool(card);
card->qdio.in_buf_pool.buf_count = bufcnt;
card->qdio.init_pool.buf_count = bufcnt;
return qeth_alloc_buffer_pool(card);
}
static int
qeth_alloc_qdio_buffers(struct qeth_card *card)
{
int i, j;
QETH_DBF_TEXT(setup, 2, "allcqdbf");
if (card->qdio.state == QETH_QDIO_ALLOCATED)
return 0;
card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q), GFP_KERNEL);
if (!card->qdio.in_q)
return - ENOMEM;
QETH_DBF_TEXT(setup, 2, "inq");
QETH_DBF_HEX(setup, 2, &card->qdio.in_q, sizeof(void *));
memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
/* give inbound qeth_qdio_buffers their qdio_buffers */
for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
card->qdio.in_q->bufs[i].buffer =
&card->qdio.in_q->qdio_bufs[i];
/* inbound buffer pool */
if (qeth_alloc_buffer_pool(card)){
kfree(card->qdio.in_q);
return -ENOMEM;
}
/* outbound */
card->qdio.out_qs =
kmalloc(card->qdio.no_out_queues *
sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
if (!card->qdio.out_qs){
qeth_free_buffer_pool(card);
return -ENOMEM;
}
for (i = 0; i < card->qdio.no_out_queues; ++i){
card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
GFP_KERNEL);
if (!card->qdio.out_qs[i]){
while (i > 0)
kfree(card->qdio.out_qs[--i]);
kfree(card->qdio.out_qs);
return -ENOMEM;
}
QETH_DBF_TEXT_(setup, 2, "outq %i", i);
QETH_DBF_HEX(setup, 2, &card->qdio.out_qs[i], sizeof(void *));
memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
card->qdio.out_qs[i]->queue_no = i;
/* give outbound qeth_qdio_buffers their qdio_buffers */
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j){
card->qdio.out_qs[i]->bufs[j].buffer =
&card->qdio.out_qs[i]->qdio_bufs[j];
skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
skb_list);
INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
}
}
card->qdio.state = QETH_QDIO_ALLOCATED;
return 0;
}
static void
qeth_free_qdio_buffers(struct qeth_card *card)
{
int i, j;
QETH_DBF_TEXT(trace, 2, "freeqdbf");
if (card->qdio.state == QETH_QDIO_UNINITIALIZED)
return;
kfree(card->qdio.in_q);
/* inbound buffer pool */
qeth_free_buffer_pool(card);
/* free outbound qdio_qs */
for (i = 0; i < card->qdio.no_out_queues; ++i){
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
qeth_clear_output_buffer(card->qdio.out_qs[i],
&card->qdio.out_qs[i]->bufs[j]);
kfree(card->qdio.out_qs[i]);
}
kfree(card->qdio.out_qs);
card->qdio.state = QETH_QDIO_UNINITIALIZED;
}
static void
qeth_clear_qdio_buffers(struct qeth_card *card)
{
int i, j;
QETH_DBF_TEXT(trace, 2, "clearqdbf");
/* clear outbound buffers to free skbs */
for (i = 0; i < card->qdio.no_out_queues; ++i)
if (card->qdio.out_qs[i]){
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
qeth_clear_output_buffer(card->qdio.out_qs[i],
&card->qdio.out_qs[i]->bufs[j]);
}
}
static void
qeth_init_qdio_info(struct qeth_card *card)
{
QETH_DBF_TEXT(setup, 4, "intqdinf");
card->qdio.state = QETH_QDIO_UNINITIALIZED;
/* inbound */
card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
/* outbound */
card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
}
static int
qeth_init_qdio_queues(struct qeth_card *card)
{
int i, j;
int rc;
QETH_DBF_TEXT(setup, 2, "initqdqs");
/* inbound queue */
memset(card->qdio.in_q->qdio_bufs, 0,
QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
qeth_initialize_working_pool_list(card);
/*give only as many buffers to hardware as we have buffer pool entries*/
for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
card->qdio.in_q->next_buf_to_init = card->qdio.in_buf_pool.buf_count - 1;
rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
card->qdio.in_buf_pool.buf_count - 1, NULL);
if (rc) {
QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
return rc;
}
rc = qdio_synchronize(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0);
if (rc) {
QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
return rc;
}
/* outbound queue */
for (i = 0; i < card->qdio.no_out_queues; ++i){
memset(card->qdio.out_qs[i]->qdio_bufs, 0,
QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j){
qeth_clear_output_buffer(card->qdio.out_qs[i],
&card->qdio.out_qs[i]->bufs[j]);
}
card->qdio.out_qs[i]->card = card;
card->qdio.out_qs[i]->next_buf_to_fill = 0;
card->qdio.out_qs[i]->do_pack = 0;
atomic_set(&card->qdio.out_qs[i]->used_buffers,0);
atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
atomic_set(&card->qdio.out_qs[i]->state,
QETH_OUT_Q_UNLOCKED);
}
return 0;
}
static int
qeth_qdio_establish(struct qeth_card *card)
{
struct qdio_initialize init_data;
char *qib_param_field;
struct qdio_buffer **in_sbal_ptrs;
struct qdio_buffer **out_sbal_ptrs;
int i, j, k;
int rc;
QETH_DBF_TEXT(setup, 2, "qdioest");
qib_param_field = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
GFP_KERNEL);
if (!qib_param_field)
return -ENOMEM;
memset(qib_param_field, 0, QDIO_MAX_BUFFERS_PER_Q * sizeof(char));
qeth_create_qib_param_field(card, qib_param_field);
qeth_create_qib_param_field_blkt(card, qib_param_field);
in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
GFP_KERNEL);
if (!in_sbal_ptrs) {
kfree(qib_param_field);
return -ENOMEM;
}
for(i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
in_sbal_ptrs[i] = (struct qdio_buffer *)
virt_to_phys(card->qdio.in_q->bufs[i].buffer);
out_sbal_ptrs =
kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
sizeof(void *), GFP_KERNEL);
if (!out_sbal_ptrs) {
kfree(in_sbal_ptrs);
kfree(qib_param_field);
return -ENOMEM;
}
for(i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
for(j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k){
out_sbal_ptrs[k] = (struct qdio_buffer *)
virt_to_phys(card->qdio.out_qs[i]->
bufs[j].buffer);
}
memset(&init_data, 0, sizeof(struct qdio_initialize));
init_data.cdev = CARD_DDEV(card);
init_data.q_format = qeth_get_qdio_q_format(card);
init_data.qib_param_field_format = 0;
init_data.qib_param_field = qib_param_field;
init_data.min_input_threshold = QETH_MIN_INPUT_THRESHOLD;
init_data.max_input_threshold = QETH_MAX_INPUT_THRESHOLD;
init_data.min_output_threshold = QETH_MIN_OUTPUT_THRESHOLD;
init_data.max_output_threshold = QETH_MAX_OUTPUT_THRESHOLD;
init_data.no_input_qs = 1;
init_data.no_output_qs = card->qdio.no_out_queues;
init_data.input_handler = (qdio_handler_t *)
qeth_qdio_input_handler;
init_data.output_handler = (qdio_handler_t *)
qeth_qdio_output_handler;
init_data.int_parm = (unsigned long) card;
init_data.flags = QDIO_INBOUND_0COPY_SBALS |
QDIO_OUTBOUND_0COPY_SBALS |
QDIO_USE_OUTBOUND_PCIS;
init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
if (!(rc = qdio_initialize(&init_data)))
card->qdio.state = QETH_QDIO_ESTABLISHED;
kfree(out_sbal_ptrs);
kfree(in_sbal_ptrs);
kfree(qib_param_field);
return rc;
}
static int
qeth_qdio_activate(struct qeth_card *card)
{
QETH_DBF_TEXT(setup,3,"qdioact");
return qdio_activate(CARD_DDEV(card), 0);
}
static int
qeth_clear_channel(struct qeth_channel *channel)
{
unsigned long flags;
struct qeth_card *card;
int rc;
QETH_DBF_TEXT(trace,3,"clearch");
card = CARD_FROM_CDEV(channel->ccwdev);
spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
if (rc)
return rc;
rc = wait_event_interruptible_timeout(card->wait_q,
channel->state==CH_STATE_STOPPED, QETH_TIMEOUT);
if (rc == -ERESTARTSYS)
return rc;
if (channel->state != CH_STATE_STOPPED)
return -ETIME;
channel->state = CH_STATE_DOWN;
return 0;
}
static int
qeth_halt_channel(struct qeth_channel *channel)
{
unsigned long flags;
struct qeth_card *card;
int rc;
QETH_DBF_TEXT(trace,3,"haltch");
card = CARD_FROM_CDEV(channel->ccwdev);
spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
if (rc)
return rc;
rc = wait_event_interruptible_timeout(card->wait_q,
channel->state==CH_STATE_HALTED, QETH_TIMEOUT);
if (rc == -ERESTARTSYS)
return rc;
if (channel->state != CH_STATE_HALTED)
return -ETIME;
return 0;
}
static int
qeth_halt_channels(struct qeth_card *card)
{
int rc = 0;
QETH_DBF_TEXT(trace,3,"haltchs");
if ((rc = qeth_halt_channel(&card->read)))
return rc;
if ((rc = qeth_halt_channel(&card->write)))
return rc;
return qeth_halt_channel(&card->data);
}
static int
qeth_clear_channels(struct qeth_card *card)
{
int rc = 0;
QETH_DBF_TEXT(trace,3,"clearchs");
if ((rc = qeth_clear_channel(&card->read)))
return rc;
if ((rc = qeth_clear_channel(&card->write)))
return rc;
return qeth_clear_channel(&card->data);
}
static int
qeth_clear_halt_card(struct qeth_card *card, int halt)
{
int rc = 0;
QETH_DBF_TEXT(trace,3,"clhacrd");
QETH_DBF_HEX(trace, 3, &card, sizeof(void *));
if (halt)
rc = qeth_halt_channels(card);
if (rc)
return rc;
return qeth_clear_channels(card);
}
static int
qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
{
int rc = 0;
QETH_DBF_TEXT(trace,3,"qdioclr");
if (card->qdio.state == QETH_QDIO_ESTABLISHED){
if ((rc = qdio_cleanup(CARD_DDEV(card),
(card->info.type == QETH_CARD_TYPE_IQD) ?
QDIO_FLAG_CLEANUP_USING_HALT :
QDIO_FLAG_CLEANUP_USING_CLEAR)))
QETH_DBF_TEXT_(trace, 3, "1err%d", rc);
card->qdio.state = QETH_QDIO_ALLOCATED;
}
if ((rc = qeth_clear_halt_card(card, use_halt)))
QETH_DBF_TEXT_(trace, 3, "2err%d", rc);
card->state = CARD_STATE_DOWN;
return rc;
}
static int
qeth_dm_act(struct qeth_card *card)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(setup,2,"dmact");
iob = qeth_wait_for_buffer(&card->write);
memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
&card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
&card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
return rc;
}
static int
qeth_mpc_initialize(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(setup,2,"mpcinit");
if ((rc = qeth_issue_next_read(card))){
QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
return rc;
}
if ((rc = qeth_cm_enable(card))){
QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
return rc;
}
if ((rc = qeth_cm_setup(card))){
QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
return rc;
}
if ((rc = qeth_ulp_enable(card))){
QETH_DBF_TEXT_(setup, 2, "4err%d", rc);
return rc;
}
if ((rc = qeth_ulp_setup(card))){
QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
return rc;
}
if ((rc = qeth_alloc_qdio_buffers(card))){
QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
return rc;
}
if ((rc = qeth_qdio_establish(card))){
QETH_DBF_TEXT_(setup, 2, "6err%d", rc);
qeth_free_qdio_buffers(card);
goto out_qdio;
}
if ((rc = qeth_qdio_activate(card))){
QETH_DBF_TEXT_(setup, 2, "7err%d", rc);
goto out_qdio;
}
if ((rc = qeth_dm_act(card))){
QETH_DBF_TEXT_(setup, 2, "8err%d", rc);
goto out_qdio;
}
return 0;
out_qdio:
qeth_qdio_clear_card(card, card->info.type==QETH_CARD_TYPE_OSAE);
return rc;
}
static struct net_device *
qeth_get_netdevice(enum qeth_card_types type, enum qeth_link_types linktype)
{
struct net_device *dev = NULL;
switch (type) {
case QETH_CARD_TYPE_OSAE:
switch (linktype) {
case QETH_LINK_TYPE_LANE_TR:
case QETH_LINK_TYPE_HSTR:
#ifdef CONFIG_TR
dev = alloc_trdev(0);
#endif /* CONFIG_TR */
break;
default:
dev = alloc_etherdev(0);
}
break;
case QETH_CARD_TYPE_IQD:
dev = alloc_netdev(0, "hsi%d", ether_setup);
break;
default:
dev = alloc_etherdev(0);
}
return dev;
}
/*hard_header fake function; used in case fake_ll is set */
static int
qeth_fake_header(struct sk_buff *skb, struct net_device *dev,
unsigned short type, void *daddr, void *saddr,
unsigned len)
{
if(dev->type == ARPHRD_IEEE802_TR){
struct trh_hdr *hdr;
hdr = (struct trh_hdr *)skb_push(skb, QETH_FAKE_LL_LEN_TR);
memcpy(hdr->saddr, dev->dev_addr, TR_ALEN);
memcpy(hdr->daddr, "FAKELL", TR_ALEN);
return QETH_FAKE_LL_LEN_TR;
} else {
struct ethhdr *hdr;
hdr = (struct ethhdr *)skb_push(skb, QETH_FAKE_LL_LEN_ETH);
memcpy(hdr->h_source, dev->dev_addr, ETH_ALEN);
memcpy(hdr->h_dest, "FAKELL", ETH_ALEN);
if (type != ETH_P_802_3)
hdr->h_proto = htons(type);
else
hdr->h_proto = htons(len);
return QETH_FAKE_LL_LEN_ETH;
}
}
static inline int
qeth_send_packet(struct qeth_card *, struct sk_buff *);
static int
qeth_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
int rc;
struct qeth_card *card;
QETH_DBF_TEXT(trace, 6, "hrdstxmi");
card = (struct qeth_card *)dev->priv;
if (skb==NULL) {
card->stats.tx_dropped++;
card->stats.tx_errors++;
/* return OK; otherwise ksoftirqd goes to 100% */
return NETDEV_TX_OK;
}
if ((card->state != CARD_STATE_UP) || !card->lan_online) {
card->stats.tx_dropped++;
card->stats.tx_errors++;
card->stats.tx_carrier_errors++;
dev_kfree_skb_any(skb);
/* return OK; otherwise ksoftirqd goes to 100% */
return NETDEV_TX_OK;
}
#ifdef CONFIG_QETH_PERF_STATS
card->perf_stats.outbound_cnt++;
card->perf_stats.outbound_start_time = qeth_get_micros();
#endif
netif_stop_queue(dev);
if ((rc = qeth_send_packet(card, skb))) {
if (rc == -EBUSY) {
return NETDEV_TX_BUSY;
} else {
card->stats.tx_errors++;
card->stats.tx_dropped++;
dev_kfree_skb_any(skb);
/*set to OK; otherwise ksoftirqd goes to 100% */
rc = NETDEV_TX_OK;
}
}
netif_wake_queue(dev);
#ifdef CONFIG_QETH_PERF_STATS
card->perf_stats.outbound_time += qeth_get_micros() -
card->perf_stats.outbound_start_time;
#endif
return rc;
}
static int
qeth_verify_vlan_dev(struct net_device *dev, struct qeth_card *card)
{
int rc = 0;
#ifdef CONFIG_QETH_VLAN
struct vlan_group *vg;
int i;
if (!(vg = card->vlangrp))
return rc;
for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++){
if (vg->vlan_devices[i] == dev){
rc = QETH_VLAN_CARD;
break;
}
}
#endif
return rc;
}
static int
qeth_verify_dev(struct net_device *dev)
{
struct qeth_card *card;
unsigned long flags;
int rc = 0;
read_lock_irqsave(&qeth_card_list.rwlock, flags);
list_for_each_entry(card, &qeth_card_list.list, list){
if (card->dev == dev){
rc = QETH_REAL_CARD;
break;
}
rc = qeth_verify_vlan_dev(dev, card);
if (rc)
break;
}
read_unlock_irqrestore(&qeth_card_list.rwlock, flags);
return rc;
}
static struct qeth_card *
qeth_get_card_from_dev(struct net_device *dev)
{
struct qeth_card *card = NULL;
int rc;
rc = qeth_verify_dev(dev);
if (rc == QETH_REAL_CARD)
card = (struct qeth_card *)dev->priv;
else if (rc == QETH_VLAN_CARD)
card = (struct qeth_card *)
VLAN_DEV_INFO(dev)->real_dev->priv;
QETH_DBF_TEXT_(trace, 4, "%d", rc);
return card ;
}
static void
qeth_tx_timeout(struct net_device *dev)
{
struct qeth_card *card;
card = (struct qeth_card *) dev->priv;
card->stats.tx_errors++;
qeth_schedule_recovery(card);
}
static int
qeth_open(struct net_device *dev)
{
struct qeth_card *card;
QETH_DBF_TEXT(trace, 4, "qethopen");
card = (struct qeth_card *) dev->priv;
if (card->state != CARD_STATE_SOFTSETUP)
return -ENODEV;
if ( (card->options.layer2) &&
(!card->info.layer2_mac_registered)) {
QETH_DBF_TEXT(trace,4,"nomacadr");
return -EPERM;
}
card->dev->flags |= IFF_UP;
netif_start_queue(dev);
card->data.state = CH_STATE_UP;
card->state = CARD_STATE_UP;
if (!card->lan_online){
if (netif_carrier_ok(dev))
netif_carrier_off(dev);
}
return 0;
}
static int
qeth_stop(struct net_device *dev)
{
struct qeth_card *card;
QETH_DBF_TEXT(trace, 4, "qethstop");
card = (struct qeth_card *) dev->priv;
netif_stop_queue(dev);
card->dev->flags &= ~IFF_UP;
if (card->state == CARD_STATE_UP)
card->state = CARD_STATE_SOFTSETUP;
return 0;
}
static inline int
qeth_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
{
int cast_type = RTN_UNSPEC;
if (skb->dst && skb->dst->neighbour){
cast_type = skb->dst->neighbour->type;
if ((cast_type == RTN_BROADCAST) ||
(cast_type == RTN_MULTICAST) ||
(cast_type == RTN_ANYCAST))
return cast_type;
else
return RTN_UNSPEC;
}
/* try something else */
if (skb->protocol == ETH_P_IPV6)
return (skb->nh.raw[24] == 0xff) ? RTN_MULTICAST : 0;
else if (skb->protocol == ETH_P_IP)
return ((skb->nh.raw[16] & 0xf0) == 0xe0) ? RTN_MULTICAST : 0;
/* ... */
if (!memcmp(skb->data, skb->dev->broadcast, 6))
return RTN_BROADCAST;
else {
u16 hdr_mac;
hdr_mac = *((u16 *)skb->data);
/* tr multicast? */
switch (card->info.link_type) {
case QETH_LINK_TYPE_HSTR:
case QETH_LINK_TYPE_LANE_TR:
if ((hdr_mac == QETH_TR_MAC_NC) ||
(hdr_mac == QETH_TR_MAC_C))
return RTN_MULTICAST;
/* eth or so multicast? */
default:
if ((hdr_mac == QETH_ETH_MAC_V4) ||
(hdr_mac == QETH_ETH_MAC_V6))
return RTN_MULTICAST;
}
}
return cast_type;
}
static inline int
qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
int ipv, int cast_type)
{
if (!ipv && (card->info.type == QETH_CARD_TYPE_OSAE))
return card->qdio.default_out_queue;
switch (card->qdio.no_out_queues) {
case 4:
if (cast_type && card->info.is_multicast_different)
return card->info.is_multicast_different &
(card->qdio.no_out_queues - 1);
if (card->qdio.do_prio_queueing && (ipv == 4)) {
if (card->qdio.do_prio_queueing==QETH_PRIO_Q_ING_TOS){
if (skb->nh.iph->tos & IP_TOS_NOTIMPORTANT)
return 3;
if (skb->nh.iph->tos & IP_TOS_HIGHRELIABILITY)
return 2;
if (skb->nh.iph->tos & IP_TOS_HIGHTHROUGHPUT)
return 1;
if (skb->nh.iph->tos & IP_TOS_LOWDELAY)
return 0;
}
if (card->qdio.do_prio_queueing==QETH_PRIO_Q_ING_PREC)
return 3 - (skb->nh.iph->tos >> 6);
} else if (card->qdio.do_prio_queueing && (ipv == 6)) {
/* TODO: IPv6!!! */
}
return card->qdio.default_out_queue;
case 1: /* fallthrough for single-out-queue 1920-device */
default:
return card->qdio.default_out_queue;
}
}
static inline int
qeth_get_ip_version(struct sk_buff *skb)
{
switch (skb->protocol) {
case ETH_P_IPV6:
return 6;
case ETH_P_IP:
return 4;
default:
return 0;
}
}
static inline int
qeth_prepare_skb(struct qeth_card *card, struct sk_buff **skb,
struct qeth_hdr **hdr, int ipv)
{
#ifdef CONFIG_QETH_VLAN
u16 *tag;
#endif
QETH_DBF_TEXT(trace, 6, "prepskb");
#ifdef CONFIG_QETH_VLAN
if (card->vlangrp && vlan_tx_tag_present(*skb) &&
((ipv == 6) || card->options.layer2) ) {
/*
* Move the mac addresses (6 bytes src, 6 bytes dest)
* to the beginning of the new header. We are using three
* memcpys instead of one memmove to save cycles.
*/
skb_push(*skb, VLAN_HLEN);
memcpy((*skb)->data, (*skb)->data + 4, 4);
memcpy((*skb)->data + 4, (*skb)->data + 8, 4);
memcpy((*skb)->data + 8, (*skb)->data + 12, 4);
tag = (u16 *)((*skb)->data + 12);
/*
* first two bytes = ETH_P_8021Q (0x8100)
* second two bytes = VLANID
*/
*tag = __constant_htons(ETH_P_8021Q);
*(tag + 1) = htons(vlan_tx_tag_get(*skb));
}
#endif
*hdr = (struct qeth_hdr *)
qeth_push_skb(card, skb, sizeof(struct qeth_hdr));
if (hdr == NULL)
return -EINVAL;
return 0;
}
static inline u8
qeth_get_qeth_hdr_flags4(int cast_type)
{
if (cast_type == RTN_MULTICAST)
return QETH_CAST_MULTICAST;
if (cast_type == RTN_BROADCAST)
return QETH_CAST_BROADCAST;
return QETH_CAST_UNICAST;
}
static inline u8
qeth_get_qeth_hdr_flags6(int cast_type)
{
u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
if (cast_type == RTN_MULTICAST)
return ct | QETH_CAST_MULTICAST;
if (cast_type == RTN_ANYCAST)
return ct | QETH_CAST_ANYCAST;
if (cast_type == RTN_BROADCAST)
return ct | QETH_CAST_BROADCAST;
return ct | QETH_CAST_UNICAST;
}
static inline void
qeth_layer2_get_packet_type(struct qeth_card *card, struct qeth_hdr *hdr,
struct sk_buff *skb)
{
__u16 hdr_mac;
if (!memcmp(skb->data+QETH_HEADER_SIZE,
skb->dev->broadcast,6)) { /* broadcast? */
*(__u32 *)hdr->hdr.l2.flags |=
QETH_LAYER2_FLAG_BROADCAST << 8;
return;
}
hdr_mac=*((__u16*)skb->data);
/* tr multicast? */
switch (card->info.link_type) {
case QETH_LINK_TYPE_HSTR:
case QETH_LINK_TYPE_LANE_TR:
if ((hdr_mac == QETH_TR_MAC_NC) ||
(hdr_mac == QETH_TR_MAC_C) )
*(__u32 *)hdr->hdr.l2.flags |=
QETH_LAYER2_FLAG_MULTICAST << 8;
else
*(__u32 *)hdr->hdr.l2.flags |=
QETH_LAYER2_FLAG_UNICAST << 8;
break;
/* eth or so multicast? */
default:
if ( (hdr_mac==QETH_ETH_MAC_V4) ||
(hdr_mac==QETH_ETH_MAC_V6) )
*(__u32 *)hdr->hdr.l2.flags |=
QETH_LAYER2_FLAG_MULTICAST << 8;
else
*(__u32 *)hdr->hdr.l2.flags |=
QETH_LAYER2_FLAG_UNICAST << 8;
}
}
static inline void
qeth_layer2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
struct sk_buff *skb, int cast_type)
{
memset(hdr, 0, sizeof(struct qeth_hdr));
hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
/* set byte 0 to "0x02" and byte 3 to casting flags */
if (cast_type==RTN_MULTICAST)
*(__u32 *)hdr->hdr.l2.flags |= QETH_LAYER2_FLAG_MULTICAST << 8;
else if (cast_type==RTN_BROADCAST)
*(__u32 *)hdr->hdr.l2.flags |= QETH_LAYER2_FLAG_BROADCAST << 8;
else
qeth_layer2_get_packet_type(card, hdr, skb);
hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
#ifdef CONFIG_QETH_VLAN
/* VSWITCH relies on the VLAN
* information to be present in
* the QDIO header */
if ((card->vlangrp != NULL) &&
vlan_tx_tag_present(skb)) {
*(__u32 *)hdr->hdr.l2.flags |= QETH_LAYER2_FLAG_VLAN << 8;
hdr->hdr.l2.vlan_id = vlan_tx_tag_get(skb);
}
#endif
}
void
qeth_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
struct sk_buff *skb, int ipv, int cast_type)
{
QETH_DBF_TEXT(trace, 6, "fillhdr");
memset(hdr, 0, sizeof(struct qeth_hdr));
if (card->options.layer2) {
qeth_layer2_fill_header(card, hdr, skb, cast_type);
return;
}
hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
hdr->hdr.l3.ext_flags = 0;
#ifdef CONFIG_QETH_VLAN
/*
* before we're going to overwrite this location with next hop ip.
* v6 uses passthrough, v4 sets the tag in the QDIO header.
*/
if (card->vlangrp && vlan_tx_tag_present(skb)) {
hdr->hdr.l3.ext_flags = (ipv == 4) ?
QETH_HDR_EXT_VLAN_FRAME :
QETH_HDR_EXT_INCLUDE_VLAN_TAG;
hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
}
#endif /* CONFIG_QETH_VLAN */
hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
if (ipv == 4) { /* IPv4 */
hdr->hdr.l3.flags = qeth_get_qeth_hdr_flags4(cast_type);
memset(hdr->hdr.l3.dest_addr, 0, 12);
if ((skb->dst) && (skb->dst->neighbour)) {
*((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
*((u32 *) skb->dst->neighbour->primary_key);
} else {
/* fill in destination address used in ip header */
*((u32 *) (&hdr->hdr.l3.dest_addr[12])) = skb->nh.iph->daddr;
}
} else if (ipv == 6) { /* IPv6 or passthru */
hdr->hdr.l3.flags = qeth_get_qeth_hdr_flags6(cast_type);
if ((skb->dst) && (skb->dst->neighbour)) {
memcpy(hdr->hdr.l3.dest_addr,
skb->dst->neighbour->primary_key, 16);
} else {
/* fill in destination address used in ip header */
memcpy(hdr->hdr.l3.dest_addr, &skb->nh.ipv6h->daddr, 16);
}
} else { /* passthrough */
if((skb->dev->type == ARPHRD_IEEE802_TR) &&
!memcmp(skb->data + sizeof(struct qeth_hdr) +
sizeof(__u16), skb->dev->broadcast, 6)) {
hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
QETH_HDR_PASSTHRU;
} else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
skb->dev->broadcast, 6)) { /* broadcast? */
hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
QETH_HDR_PASSTHRU;
} else {
hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
}
}
}
static inline void
__qeth_fill_buffer(struct sk_buff *skb, struct qdio_buffer *buffer,
int is_tso, int *next_element_to_fill)
{
int length = skb->len;
int length_here;
int element;
char *data;
int first_lap ;
element = *next_element_to_fill;
data = skb->data;
first_lap = (is_tso == 0 ? 1 : 0);
while (length > 0) {
/* length_here is the remaining amount of data in this page */
length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
if (length < length_here)
length_here = length;
buffer->element[element].addr = data;
buffer->element[element].length = length_here;
length -= length_here;
if (!length) {
if (first_lap)
buffer->element[element].flags = 0;
else
buffer->element[element].flags =
SBAL_FLAGS_LAST_FRAG;
} else {
if (first_lap)
buffer->element[element].flags =
SBAL_FLAGS_FIRST_FRAG;
else
buffer->element[element].flags =
SBAL_FLAGS_MIDDLE_FRAG;
}
data += length_here;
element++;
first_lap = 0;
}
*next_element_to_fill = element;
}
static inline int
qeth_fill_buffer(struct qeth_qdio_out_q *queue,
struct qeth_qdio_out_buffer *buf,
struct sk_buff *skb)
{
struct qdio_buffer *buffer;
struct qeth_hdr_tso *hdr;
int flush_cnt = 0, hdr_len, large_send = 0;
QETH_DBF_TEXT(trace, 6, "qdfillbf");
buffer = buf->buffer;
atomic_inc(&skb->users);
skb_queue_tail(&buf->skb_list, skb);
hdr = (struct qeth_hdr_tso *) skb->data;
/*check first on TSO ....*/
if (hdr->hdr.hdr.l3.id == QETH_HEADER_TYPE_TSO) {
int element = buf->next_element_to_fill;
hdr_len = sizeof(struct qeth_hdr_tso) + hdr->ext.dg_hdr_len;
/*fill first buffer entry only with header information */
buffer->element[element].addr = skb->data;
buffer->element[element].length = hdr_len;
buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
buf->next_element_to_fill++;
skb->data += hdr_len;
skb->len -= hdr_len;
large_send = 1;
}
if (skb_shinfo(skb)->nr_frags == 0)
__qeth_fill_buffer(skb, buffer, large_send,
(int *)&buf->next_element_to_fill);
else
__qeth_fill_buffer_frag(skb, buffer, large_send,
(int *)&buf->next_element_to_fill);
if (!queue->do_pack) {
QETH_DBF_TEXT(trace, 6, "fillbfnp");
/* set state to PRIMED -> will be flushed */
atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
flush_cnt = 1;
} else {
QETH_DBF_TEXT(trace, 6, "fillbfpa");
#ifdef CONFIG_QETH_PERF_STATS
queue->card->perf_stats.skbs_sent_pack++;
#endif
if (buf->next_element_to_fill >=
QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
/*
* packed buffer if full -> set state PRIMED
* -> will be flushed
*/
atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
flush_cnt = 1;
}
}
return flush_cnt;
}
static inline int
qeth_do_send_packet_fast(struct qeth_card *card, struct qeth_qdio_out_q *queue,
struct sk_buff *skb, struct qeth_hdr *hdr,
int elements_needed,
struct qeth_eddp_context *ctx)
{
struct qeth_qdio_out_buffer *buffer;
int buffers_needed = 0;
int flush_cnt = 0;
int index;
QETH_DBF_TEXT(trace, 6, "dosndpfa");
/* spin until we get the queue ... */
while (atomic_compare_and_swap(QETH_OUT_Q_UNLOCKED,
QETH_OUT_Q_LOCKED,
&queue->state));
/* ... now we've got the queue */
index = queue->next_buf_to_fill;
buffer = &queue->bufs[queue->next_buf_to_fill];
/*
* check if buffer is empty to make sure that we do not 'overtake'
* ourselves and try to fill a buffer that is already primed
*/
if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
card->stats.tx_dropped++;
atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
return -EBUSY;
}
if (ctx == NULL)
queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
QDIO_MAX_BUFFERS_PER_Q;
else {
buffers_needed = qeth_eddp_check_buffers_for_context(queue,ctx);
if (buffers_needed < 0) {
card->stats.tx_dropped++;
atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
return -EBUSY;
}
queue->next_buf_to_fill =
(queue->next_buf_to_fill + buffers_needed) %
QDIO_MAX_BUFFERS_PER_Q;
}
atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
if (ctx == NULL) {
qeth_fill_buffer(queue, buffer, skb);
qeth_flush_buffers(queue, 0, index, 1);
} else {
flush_cnt = qeth_eddp_fill_buffer(queue, ctx, index);
WARN_ON(buffers_needed != flush_cnt);
qeth_flush_buffers(queue, 0, index, flush_cnt);
}
return 0;
}
static inline int
qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
struct sk_buff *skb, struct qeth_hdr *hdr,
int elements_needed, struct qeth_eddp_context *ctx)
{
struct qeth_qdio_out_buffer *buffer;
int start_index;
int flush_count = 0;
int do_pack = 0;
int tmp;
int rc = 0;
QETH_DBF_TEXT(trace, 6, "dosndpkt");
/* spin until we get the queue ... */
while (atomic_compare_and_swap(QETH_OUT_Q_UNLOCKED,
QETH_OUT_Q_LOCKED,
&queue->state));
start_index = queue->next_buf_to_fill;
buffer = &queue->bufs[queue->next_buf_to_fill];
/*
* check if buffer is empty to make sure that we do not 'overtake'
* ourselves and try to fill a buffer that is already primed
*/
if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY){
card->stats.tx_dropped++;
atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
return -EBUSY;
}
/* check if we need to switch packing state of this queue */
qeth_switch_to_packing_if_needed(queue);
if (queue->do_pack){
do_pack = 1;
if (ctx == NULL) {
/* does packet fit in current buffer? */
if((QETH_MAX_BUFFER_ELEMENTS(card) -
buffer->next_element_to_fill) < elements_needed){
/* ... no -> set state PRIMED */
atomic_set(&buffer->state,QETH_QDIO_BUF_PRIMED);
flush_count++;
queue->next_buf_to_fill =
(queue->next_buf_to_fill + 1) %
QDIO_MAX_BUFFERS_PER_Q;
buffer = &queue->bufs[queue->next_buf_to_fill];
/* we did a step forward, so check buffer state
* again */
if (atomic_read(&buffer->state) !=
QETH_QDIO_BUF_EMPTY){
card->stats.tx_dropped++;
qeth_flush_buffers(queue, 0, start_index, flush_count);
atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
return -EBUSY;
}
}
} else {
/* check if we have enough elements (including following
* free buffers) to handle eddp context */
if (qeth_eddp_check_buffers_for_context(queue,ctx) < 0){
printk("eddp tx_dropped 1\n");
card->stats.tx_dropped++;
rc = -EBUSY;
goto out;
}
}
}
if (ctx == NULL)
tmp = qeth_fill_buffer(queue, buffer, skb);
else {
tmp = qeth_eddp_fill_buffer(queue,ctx,queue->next_buf_to_fill);
if (tmp < 0) {
printk("eddp tx_dropped 2\n");
card->stats.tx_dropped++;
rc = - EBUSY;
goto out;
}
}
queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
QDIO_MAX_BUFFERS_PER_Q;
flush_count += tmp;
out:
if (flush_count)
qeth_flush_buffers(queue, 0, start_index, flush_count);
/*
* queue->state will go from LOCKED -> UNLOCKED or from
* LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
* (switch packing state or flush buffer to get another pci flag out).
* In that case we will enter this loop
*/
while (atomic_dec_return(&queue->state)){
flush_count = 0;
start_index = queue->next_buf_to_fill;
/* check if we can go back to non-packing state */
flush_count += qeth_switch_to_nonpacking_if_needed(queue);
/*
* check if we need to flush a packing buffer to get a pci
* flag out on the queue
*/
if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
flush_count += qeth_flush_buffers_on_no_pci(queue);
if (flush_count)
qeth_flush_buffers(queue, 0, start_index, flush_count);
}
/* at this point the queue is UNLOCKED again */
#ifdef CONFIG_QETH_PERF_STATS
if (do_pack)
queue->card->perf_stats.bufs_sent_pack += flush_count;
#endif /* CONFIG_QETH_PERF_STATS */
return rc;
}
static inline int
qeth_get_elements_no(struct qeth_card *card, void *hdr, struct sk_buff *skb)
{
int elements_needed = 0;
if (skb_shinfo(skb)->nr_frags > 0) {
elements_needed = (skb_shinfo(skb)->nr_frags + 1);
}
if (elements_needed == 0 )
elements_needed = 1 + (((((unsigned long) hdr) % PAGE_SIZE)
+ skb->len) >> PAGE_SHIFT);
if (elements_needed > QETH_MAX_BUFFER_ELEMENTS(card)){
PRINT_ERR("qeth_do_send_packet: invalid size of "
"IP packet. Discarded.");
return 0;
}
return elements_needed;
}
static inline int
qeth_send_packet(struct qeth_card *card, struct sk_buff *skb)
{
int ipv = 0;
int cast_type;
struct qeth_qdio_out_q *queue;
struct qeth_hdr *hdr;
int elements_needed = 0;
enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
struct qeth_eddp_context *ctx = NULL;
int rc;
QETH_DBF_TEXT(trace, 6, "sendpkt");
if (!card->options.layer2) {
ipv = qeth_get_ip_version(skb);
if ((card->dev->hard_header == qeth_fake_header) && ipv) {
if ((skb = qeth_pskb_unshare(skb,GFP_ATOMIC)) == NULL) {
card->stats.tx_dropped++;
dev_kfree_skb_irq(skb);
return 0;
}
if(card->dev->type == ARPHRD_IEEE802_TR){
skb_pull(skb, QETH_FAKE_LL_LEN_TR);
} else {
skb_pull(skb, QETH_FAKE_LL_LEN_ETH);
}
}
}
cast_type = qeth_get_cast_type(card, skb);
if ((cast_type == RTN_BROADCAST) && (card->info.broadcast_capable == 0)){
card->stats.tx_dropped++;
card->stats.tx_errors++;
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
queue = card->qdio.out_qs
[qeth_get_priority_queue(card, skb, ipv, cast_type)];
if (skb_shinfo(skb)->tso_size)
large_send = card->options.large_send;
/*are we able to do TSO ? If so ,prepare and send it from here */
if ((large_send == QETH_LARGE_SEND_TSO) &&
(cast_type == RTN_UNSPEC)) {
rc = qeth_tso_prepare_packet(card, skb, ipv, cast_type);
if (rc) {
card->stats.tx_dropped++;
card->stats.tx_errors++;
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
elements_needed++;
} else {
if ((rc = qeth_prepare_skb(card, &skb, &hdr, ipv))) {
QETH_DBF_TEXT_(trace, 4, "pskbe%d", rc);
return rc;
}
qeth_fill_header(card, hdr, skb, ipv, cast_type);
}
if (large_send == QETH_LARGE_SEND_EDDP) {
ctx = qeth_eddp_create_context(card, skb, hdr);
if (ctx == NULL) {
PRINT_WARN("could not create eddp context\n");
return -EINVAL;
}
} else {
elements_needed += qeth_get_elements_no(card,(void*) hdr, skb);
if (!elements_needed)
return -EINVAL;
}
if (card->info.type != QETH_CARD_TYPE_IQD)
rc = qeth_do_send_packet(card, queue, skb, hdr,
elements_needed, ctx);
else
rc = qeth_do_send_packet_fast(card, queue, skb, hdr,
elements_needed, ctx);
if (!rc){
card->stats.tx_packets++;
card->stats.tx_bytes += skb->len;
#ifdef CONFIG_QETH_PERF_STATS
if (skb_shinfo(skb)->tso_size &&
!(large_send == QETH_LARGE_SEND_NO)) {
card->perf_stats.large_send_bytes += skb->len;
card->perf_stats.large_send_cnt++;
}
if (skb_shinfo(skb)->nr_frags > 0){
card->perf_stats.sg_skbs_sent++;
/* nr_frags + skb->data */
card->perf_stats.sg_frags_sent +=
skb_shinfo(skb)->nr_frags + 1;
}
#endif /* CONFIG_QETH_PERF_STATS */
}
if (ctx != NULL) {
/* drop creator's reference */
qeth_eddp_put_context(ctx);
/* free skb; it's not referenced by a buffer */
if (rc == 0)
dev_kfree_skb_any(skb);
}
return rc;
}
static int
qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
{
struct qeth_card *card = (struct qeth_card *) dev->priv;
int rc = 0;
switch(regnum){
case MII_BMCR: /* Basic mode control register */
rc = BMCR_FULLDPLX;
if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH)&&
(card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
rc |= BMCR_SPEED100;
break;
case MII_BMSR: /* Basic mode status register */
rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
BMSR_100BASE4;
break;
case MII_PHYSID1: /* PHYS ID 1 */
rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
dev->dev_addr[2];
rc = (rc >> 5) & 0xFFFF;
break;
case MII_PHYSID2: /* PHYS ID 2 */
rc = (dev->dev_addr[2] << 10) & 0xFFFF;
break;
case MII_ADVERTISE: /* Advertisement control reg */
rc = ADVERTISE_ALL;
break;
case MII_LPA: /* Link partner ability reg */
rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
LPA_100BASE4 | LPA_LPACK;
break;
case MII_EXPANSION: /* Expansion register */
break;
case MII_DCOUNTER: /* disconnect counter */
break;
case MII_FCSCOUNTER: /* false carrier counter */
break;
case MII_NWAYTEST: /* N-way auto-neg test register */
break;
case MII_RERRCOUNTER: /* rx error counter */
rc = card->stats.rx_errors;
break;
case MII_SREVISION: /* silicon revision */
break;
case MII_RESV1: /* reserved 1 */
break;
case MII_LBRERROR: /* loopback, rx, bypass error */
break;
case MII_PHYADDR: /* physical address */
break;
case MII_RESV2: /* reserved 2 */
break;
case MII_TPISTATUS: /* TPI status for 10mbps */
break;
case MII_NCONFIG: /* network interface config */
break;
default:
rc = 0;
break;
}
return rc;
}
static void
qeth_mdio_write(struct net_device *dev, int phy_id, int regnum, int value)
{
switch(regnum){
case MII_BMCR: /* Basic mode control register */
case MII_BMSR: /* Basic mode status register */
case MII_PHYSID1: /* PHYS ID 1 */
case MII_PHYSID2: /* PHYS ID 2 */
case MII_ADVERTISE: /* Advertisement control reg */
case MII_LPA: /* Link partner ability reg */
case MII_EXPANSION: /* Expansion register */
case MII_DCOUNTER: /* disconnect counter */
case MII_FCSCOUNTER: /* false carrier counter */
case MII_NWAYTEST: /* N-way auto-neg test register */
case MII_RERRCOUNTER: /* rx error counter */
case MII_SREVISION: /* silicon revision */
case MII_RESV1: /* reserved 1 */
case MII_LBRERROR: /* loopback, rx, bypass error */
case MII_PHYADDR: /* physical address */
case MII_RESV2: /* reserved 2 */
case MII_TPISTATUS: /* TPI status for 10mbps */
case MII_NCONFIG: /* network interface config */
default:
break;
}
}
static inline const char *
qeth_arp_get_error_cause(int *rc)
{
switch (*rc) {
case QETH_IPA_ARP_RC_FAILED:
*rc = -EIO;
return "operation failed";
case QETH_IPA_ARP_RC_NOTSUPP:
*rc = -EOPNOTSUPP;
return "operation not supported";
case QETH_IPA_ARP_RC_OUT_OF_RANGE:
*rc = -EINVAL;
return "argument out of range";
case QETH_IPA_ARP_RC_Q_NOTSUPP:
*rc = -EOPNOTSUPP;
return "query operation not supported";
case QETH_IPA_ARP_RC_Q_NO_DATA:
*rc = -ENOENT;
return "no query data available";
default:
return "unknown error";
}
}
static int
qeth_send_simple_setassparms(struct qeth_card *, enum qeth_ipa_funcs,
__u16, long);
static int
qeth_arp_set_no_entries(struct qeth_card *card, int no_entries)
{
int tmp;
int rc;
QETH_DBF_TEXT(trace,3,"arpstnoe");
/* TODO: really not supported by GuestLAN? */
if (card->info.guestlan)
return -EOPNOTSUPP;
if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
PRINT_WARN("ARP processing not supported "
"on %s!\n", QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
no_entries);
if (rc) {
tmp = rc;
PRINT_WARN("Could not set number of ARP entries on %s: "
"%s (0x%x/%d)\n",
QETH_CARD_IFNAME(card), qeth_arp_get_error_cause(&rc),
tmp, tmp);
}
return rc;
}
static inline void
qeth_copy_arp_entries_stripped(struct qeth_arp_query_info *qinfo,
struct qeth_arp_query_data *qdata,
int entry_size, int uentry_size)
{
char *entry_ptr;
char *uentry_ptr;
int i;
entry_ptr = (char *)&qdata->data;
uentry_ptr = (char *)(qinfo->udata + qinfo->udata_offset);
for (i = 0; i < qdata->no_entries; ++i){
/* strip off 32 bytes "media specific information" */
memcpy(uentry_ptr, (entry_ptr + 32), entry_size - 32);
entry_ptr += entry_size;
uentry_ptr += uentry_size;
}
}
static int
qeth_arp_query_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
struct qeth_arp_query_data *qdata;
struct qeth_arp_query_info *qinfo;
int entry_size;
int uentry_size;
int i;
QETH_DBF_TEXT(trace,4,"arpquecb");
qinfo = (struct qeth_arp_query_info *) reply->param;
cmd = (struct qeth_ipa_cmd *) data;
if (cmd->hdr.return_code) {
QETH_DBF_TEXT_(trace,4,"qaer1%i", cmd->hdr.return_code);
return 0;
}
if (cmd->data.setassparms.hdr.return_code) {
cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
QETH_DBF_TEXT_(trace,4,"qaer2%i", cmd->hdr.return_code);
return 0;
}
qdata = &cmd->data.setassparms.data.query_arp;
switch(qdata->reply_bits){
case 5:
uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry5);
if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
uentry_size = sizeof(struct qeth_arp_qi_entry5_short);
break;
case 7:
/* fall through to default */
default:
/* tr is the same as eth -> entry7 */
uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry7);
if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
uentry_size = sizeof(struct qeth_arp_qi_entry7_short);
break;
}
/* check if there is enough room in userspace */
if ((qinfo->udata_len - qinfo->udata_offset) <
qdata->no_entries * uentry_size){
QETH_DBF_TEXT_(trace, 4, "qaer3%i", -ENOMEM);
cmd->hdr.return_code = -ENOMEM;
PRINT_WARN("query ARP user space buffer is too small for "
"the returned number of ARP entries. "
"Aborting query!\n");
goto out_error;
}
QETH_DBF_TEXT_(trace, 4, "anore%i",
cmd->data.setassparms.hdr.number_of_replies);
QETH_DBF_TEXT_(trace, 4, "aseqn%i", cmd->data.setassparms.hdr.seq_no);
QETH_DBF_TEXT_(trace, 4, "anoen%i", qdata->no_entries);
if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) {
/* strip off "media specific information" */
qeth_copy_arp_entries_stripped(qinfo, qdata, entry_size,
uentry_size);
} else
/*copy entries to user buffer*/
memcpy(qinfo->udata + qinfo->udata_offset,
(char *)&qdata->data, qdata->no_entries*uentry_size);
qinfo->no_entries += qdata->no_entries;
qinfo->udata_offset += (qdata->no_entries*uentry_size);
/* check if all replies received ... */
if (cmd->data.setassparms.hdr.seq_no <
cmd->data.setassparms.hdr.number_of_replies)
return 1;
memcpy(qinfo->udata, &qinfo->no_entries, 4);
/* keep STRIP_ENTRIES flag so the user program can distinguish
* stripped entries from normal ones */
if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET,&qdata->reply_bits,2);
return 0;
out_error:
i = 0;
memcpy(qinfo->udata, &i, 4);
return 0;
}
static int
qeth_send_ipa_arp_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
int len, int (*reply_cb)(struct qeth_card *,
struct qeth_reply *,
unsigned long),
void *reply_param)
{
QETH_DBF_TEXT(trace,4,"sendarp");
memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
&card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
reply_cb, reply_param);
}
static int
qeth_send_ipa_snmp_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
int len, int (*reply_cb)(struct qeth_card *,
struct qeth_reply *,
unsigned long),
void *reply_param)
{
u16 s1, s2;
QETH_DBF_TEXT(trace,4,"sendsnmp");
memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
&card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
/* adjust PDU length fields in IPA_PDU_HEADER */
s1 = (u32) IPA_PDU_HEADER_SIZE + len;
s2 = (u32) len;
memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
reply_cb, reply_param);
}
static struct qeth_cmd_buffer *
qeth_get_setassparms_cmd(struct qeth_card *, enum qeth_ipa_funcs,
__u16, __u16, enum qeth_prot_versions);
static int
qeth_arp_query(struct qeth_card *card, char *udata)
{
struct qeth_cmd_buffer *iob;
struct qeth_arp_query_info qinfo = {0, };
int tmp;
int rc;
QETH_DBF_TEXT(trace,3,"arpquery");
/*
* currently GuestLAN does only deliver all zeros on query arp,
* even though arp processing is supported (according to IPA supp.
* funcs flags); since all zeros is no valueable information,
* we say EOPNOTSUPP for all ARP functions
*/
/*if (card->info.guestlan)
return -EOPNOTSUPP; */
if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
IPA_ARP_PROCESSING)) {
PRINT_WARN("ARP processing not supported "
"on %s!\n", QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
/* get size of userspace buffer and mask_bits -> 6 bytes */
if (copy_from_user(&qinfo, udata, 6))
return -EFAULT;
if (!(qinfo.udata = kmalloc(qinfo.udata_len, GFP_KERNEL)))
return -ENOMEM;
memset(qinfo.udata, 0, qinfo.udata_len);
qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
IPA_CMD_ASS_ARP_QUERY_INFO,
sizeof(int),QETH_PROT_IPV4);
rc = qeth_send_ipa_arp_cmd(card, iob,
QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
qeth_arp_query_cb, (void *)&qinfo);
if (rc) {
tmp = rc;
PRINT_WARN("Error while querying ARP cache on %s: %s "
"(0x%x/%d)\n",
QETH_CARD_IFNAME(card), qeth_arp_get_error_cause(&rc),
tmp, tmp);
copy_to_user(udata, qinfo.udata, 4);
} else {
copy_to_user(udata, qinfo.udata, qinfo.udata_len);
}
kfree(qinfo.udata);
return rc;
}
/**
* SNMP command callback
*/
static int
qeth_snmp_command_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long sdata)
{
struct qeth_ipa_cmd *cmd;
struct qeth_arp_query_info *qinfo;
struct qeth_snmp_cmd *snmp;
unsigned char *data;
__u16 data_len;
QETH_DBF_TEXT(trace,3,"snpcmdcb");
cmd = (struct qeth_ipa_cmd *) sdata;
data = (unsigned char *)((char *)cmd - reply->offset);
qinfo = (struct qeth_arp_query_info *) reply->param;
snmp = &cmd->data.setadapterparms.data.snmp;
if (cmd->hdr.return_code) {
QETH_DBF_TEXT_(trace,4,"scer1%i", cmd->hdr.return_code);
return 0;
}
if (cmd->data.setadapterparms.hdr.return_code) {
cmd->hdr.return_code = cmd->data.setadapterparms.hdr.return_code;
QETH_DBF_TEXT_(trace,4,"scer2%i", cmd->hdr.return_code);
return 0;
}
data_len = *((__u16*)QETH_IPA_PDU_LEN_PDU1(data));
if (cmd->data.setadapterparms.hdr.seq_no == 1)
data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
else
data_len -= (__u16)((char*)&snmp->request - (char *)cmd);
/* check if there is enough room in userspace */
if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
QETH_DBF_TEXT_(trace, 4, "scer3%i", -ENOMEM);
cmd->hdr.return_code = -ENOMEM;
return 0;
}
QETH_DBF_TEXT_(trace, 4, "snore%i",
cmd->data.setadapterparms.hdr.used_total);
QETH_DBF_TEXT_(trace, 4, "sseqn%i", cmd->data.setadapterparms.hdr.seq_no);
/*copy entries to user buffer*/
if (cmd->data.setadapterparms.hdr.seq_no == 1) {
memcpy(qinfo->udata + qinfo->udata_offset,
(char *)snmp,
data_len + offsetof(struct qeth_snmp_cmd,data));
qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
} else {
memcpy(qinfo->udata + qinfo->udata_offset,
(char *)&snmp->request, data_len);
}
qinfo->udata_offset += data_len;
/* check if all replies received ... */
QETH_DBF_TEXT_(trace, 4, "srtot%i",
cmd->data.setadapterparms.hdr.used_total);
QETH_DBF_TEXT_(trace, 4, "srseq%i",
cmd->data.setadapterparms.hdr.seq_no);
if (cmd->data.setadapterparms.hdr.seq_no <
cmd->data.setadapterparms.hdr.used_total)
return 1;
return 0;
}
static struct qeth_cmd_buffer *
qeth_get_ipacmd_buffer(struct qeth_card *, enum qeth_ipa_cmds,
enum qeth_prot_versions );
static struct qeth_cmd_buffer *
qeth_get_adapter_cmd(struct qeth_card *card, __u32 command, __u32 cmdlen)
{
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
iob = qeth_get_ipacmd_buffer(card,IPA_CMD_SETADAPTERPARMS,
QETH_PROT_IPV4);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
cmd->data.setadapterparms.hdr.command_code = command;
cmd->data.setadapterparms.hdr.used_total = 1;
cmd->data.setadapterparms.hdr.seq_no = 1;
return iob;
}
/**
* function to send SNMP commands to OSA-E card
*/
static int
qeth_snmp_command(struct qeth_card *card, char *udata)
{
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
struct qeth_snmp_ureq *ureq;
int req_len;
struct qeth_arp_query_info qinfo = {0, };
int rc = 0;
QETH_DBF_TEXT(trace,3,"snmpcmd");
if (card->info.guestlan)
return -EOPNOTSUPP;
if ((!qeth_adp_supported(card,IPA_SETADP_SET_SNMP_CONTROL)) &&
(!card->options.layer2) ) {
PRINT_WARN("SNMP Query MIBS not supported "
"on %s!\n", QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
/* skip 4 bytes (data_len struct member) to get req_len */
if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
return -EFAULT;
ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
if (!ureq) {
QETH_DBF_TEXT(trace, 2, "snmpnome");
return -ENOMEM;
}
if (copy_from_user(ureq, udata,
req_len+sizeof(struct qeth_snmp_ureq_hdr))){
kfree(ureq);
return -EFAULT;
}
qinfo.udata_len = ureq->hdr.data_len;
if (!(qinfo.udata = kmalloc(qinfo.udata_len, GFP_KERNEL))){
kfree(ureq);
return -ENOMEM;
}
memset(qinfo.udata, 0, qinfo.udata_len);
qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
QETH_SNMP_SETADP_CMDLENGTH + req_len);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
qeth_snmp_command_cb, (void *)&qinfo);
if (rc)
PRINT_WARN("SNMP command failed on %s: (0x%x)\n",
QETH_CARD_IFNAME(card), rc);
else
copy_to_user(udata, qinfo.udata, qinfo.udata_len);
kfree(ureq);
kfree(qinfo.udata);
return rc;
}
static int
qeth_default_setassparms_cb(struct qeth_card *, struct qeth_reply *,
unsigned long);
static int
qeth_send_setassparms(struct qeth_card *, struct qeth_cmd_buffer *,
__u16, long,
int (*reply_cb)
(struct qeth_card *, struct qeth_reply *, unsigned long),
void *reply_param);
static int
qeth_arp_add_entry(struct qeth_card *card, struct qeth_arp_cache_entry *entry)
{
struct qeth_cmd_buffer *iob;
char buf[16];
int tmp;
int rc;
QETH_DBF_TEXT(trace,3,"arpadent");
/*
* currently GuestLAN does only deliver all zeros on query arp,
* even though arp processing is supported (according to IPA supp.
* funcs flags); since all zeros is no valueable information,
* we say EOPNOTSUPP for all ARP functions
*/
if (card->info.guestlan)
return -EOPNOTSUPP;
if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
PRINT_WARN("ARP processing not supported "
"on %s!\n", QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
IPA_CMD_ASS_ARP_ADD_ENTRY,
sizeof(struct qeth_arp_cache_entry),
QETH_PROT_IPV4);
rc = qeth_send_setassparms(card, iob,
sizeof(struct qeth_arp_cache_entry),
(unsigned long) entry,
qeth_default_setassparms_cb, NULL);
if (rc) {
tmp = rc;
qeth_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
PRINT_WARN("Could not add ARP entry for address %s on %s: "
"%s (0x%x/%d)\n",
buf, QETH_CARD_IFNAME(card),
qeth_arp_get_error_cause(&rc), tmp, tmp);
}
return rc;
}
static int
qeth_arp_remove_entry(struct qeth_card *card, struct qeth_arp_cache_entry *entry)
{
struct qeth_cmd_buffer *iob;
char buf[16] = {0, };
int tmp;
int rc;
QETH_DBF_TEXT(trace,3,"arprment");
/*
* currently GuestLAN does only deliver all zeros on query arp,
* even though arp processing is supported (according to IPA supp.
* funcs flags); since all zeros is no valueable information,
* we say EOPNOTSUPP for all ARP functions
*/
if (card->info.guestlan)
return -EOPNOTSUPP;
if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
PRINT_WARN("ARP processing not supported "
"on %s!\n", QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
memcpy(buf, entry, 12);
iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
IPA_CMD_ASS_ARP_REMOVE_ENTRY,
12,
QETH_PROT_IPV4);
rc = qeth_send_setassparms(card, iob,
12, (unsigned long)buf,
qeth_default_setassparms_cb, NULL);
if (rc) {
tmp = rc;
memset(buf, 0, 16);
qeth_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
PRINT_WARN("Could not delete ARP entry for address %s on %s: "
"%s (0x%x/%d)\n",
buf, QETH_CARD_IFNAME(card),
qeth_arp_get_error_cause(&rc), tmp, tmp);
}
return rc;
}
static int
qeth_arp_flush_cache(struct qeth_card *card)
{
int rc;
int tmp;
QETH_DBF_TEXT(trace,3,"arpflush");
/*
* currently GuestLAN does only deliver all zeros on query arp,
* even though arp processing is supported (according to IPA supp.
* funcs flags); since all zeros is no valueable information,
* we say EOPNOTSUPP for all ARP functions
*/
if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
return -EOPNOTSUPP;
if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
PRINT_WARN("ARP processing not supported "
"on %s!\n", QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
if (rc){
tmp = rc;
PRINT_WARN("Could not flush ARP cache on %s: %s (0x%x/%d)\n",
QETH_CARD_IFNAME(card), qeth_arp_get_error_cause(&rc),
tmp, tmp);
}
return rc;
}
static int
qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
struct qeth_card *card = (struct qeth_card *)dev->priv;
struct qeth_arp_cache_entry arp_entry;
struct mii_ioctl_data *mii_data;
int rc = 0;
if (!card)
return -ENODEV;
if ((card->state != CARD_STATE_UP) &&
(card->state != CARD_STATE_SOFTSETUP))
return -ENODEV;
switch (cmd){
case SIOC_QETH_ARP_SET_NO_ENTRIES:
if ( !capable(CAP_NET_ADMIN) ||
(card->options.layer2) ) {
rc = -EPERM;
break;
}
rc = qeth_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
break;
case SIOC_QETH_ARP_QUERY_INFO:
if ( !capable(CAP_NET_ADMIN) ||
(card->options.layer2) ) {
rc = -EPERM;
break;
}
rc = qeth_arp_query(card, rq->ifr_ifru.ifru_data);
break;
case SIOC_QETH_ARP_ADD_ENTRY:
if ( !capable(CAP_NET_ADMIN) ||
(card->options.layer2) ) {
rc = -EPERM;
break;
}
if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
sizeof(struct qeth_arp_cache_entry)))
rc = -EFAULT;
else
rc = qeth_arp_add_entry(card, &arp_entry);
break;
case SIOC_QETH_ARP_REMOVE_ENTRY:
if ( !capable(CAP_NET_ADMIN) ||
(card->options.layer2) ) {
rc = -EPERM;
break;
}
if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
sizeof(struct qeth_arp_cache_entry)))
rc = -EFAULT;
else
rc = qeth_arp_remove_entry(card, &arp_entry);
break;
case SIOC_QETH_ARP_FLUSH_CACHE:
if ( !capable(CAP_NET_ADMIN) ||
(card->options.layer2) ) {
rc = -EPERM;
break;
}
rc = qeth_arp_flush_cache(card);
break;
case SIOC_QETH_ADP_SET_SNMP_CONTROL:
rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
break;
case SIOC_QETH_GET_CARD_TYPE:
if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
!card->info.guestlan)
return 1;
return 0;
break;
case SIOCGMIIPHY:
mii_data = if_mii(rq);
mii_data->phy_id = 0;
break;
case SIOCGMIIREG:
mii_data = if_mii(rq);
if (mii_data->phy_id != 0)
rc = -EINVAL;
else
mii_data->val_out = qeth_mdio_read(dev,mii_data->phy_id,
mii_data->reg_num);
break;
case SIOCSMIIREG:
rc = -EOPNOTSUPP;
break;
/* TODO: remove return if qeth_mdio_write does something */
if (!capable(CAP_NET_ADMIN)){
rc = -EPERM;
break;
}
mii_data = if_mii(rq);
if (mii_data->phy_id != 0)
rc = -EINVAL;
else
qeth_mdio_write(dev, mii_data->phy_id, mii_data->reg_num,
mii_data->val_in);
break;
default:
rc = -EOPNOTSUPP;
}
if (rc)
QETH_DBF_TEXT_(trace, 2, "ioce%d", rc);
return rc;
}
static struct net_device_stats *
qeth_get_stats(struct net_device *dev)
{
struct qeth_card *card;
card = (struct qeth_card *) (dev->priv);
QETH_DBF_TEXT(trace,5,"getstat");
return &card->stats;
}
static int
qeth_change_mtu(struct net_device *dev, int new_mtu)
{
struct qeth_card *card;
char dbf_text[15];
card = (struct qeth_card *) (dev->priv);
QETH_DBF_TEXT(trace,4,"chgmtu");
sprintf(dbf_text, "%8x", new_mtu);
QETH_DBF_TEXT(trace,4,dbf_text);
if (new_mtu < 64)
return -EINVAL;
if (new_mtu > 65535)
return -EINVAL;
if ((!qeth_is_supported(card,IPA_IP_FRAGMENTATION)) &&
(!qeth_mtu_is_valid(card, new_mtu)))
return -EINVAL;
dev->mtu = new_mtu;
return 0;
}
#ifdef CONFIG_QETH_VLAN
static void
qeth_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
{
struct qeth_card *card;
unsigned long flags;
QETH_DBF_TEXT(trace,4,"vlanreg");
card = (struct qeth_card *) dev->priv;
spin_lock_irqsave(&card->vlanlock, flags);
card->vlangrp = grp;
spin_unlock_irqrestore(&card->vlanlock, flags);
}
static inline void
qeth_free_vlan_buffer(struct qeth_card *card, struct qeth_qdio_out_buffer *buf,
unsigned short vid)
{
int i;
struct sk_buff *skb;
struct sk_buff_head tmp_list;
skb_queue_head_init(&tmp_list);
for(i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i){
while ((skb = skb_dequeue(&buf->skb_list))){
if (vlan_tx_tag_present(skb) &&
(vlan_tx_tag_get(skb) == vid)) {
atomic_dec(&skb->users);
dev_kfree_skb(skb);
} else
skb_queue_tail(&tmp_list, skb);
}
}
while ((skb = skb_dequeue(&tmp_list)))
skb_queue_tail(&buf->skb_list, skb);
}
static void
qeth_free_vlan_skbs(struct qeth_card *card, unsigned short vid)
{
int i, j;
QETH_DBF_TEXT(trace, 4, "frvlskbs");
for (i = 0; i < card->qdio.no_out_queues; ++i){
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
qeth_free_vlan_buffer(card, &card->qdio.
out_qs[i]->bufs[j], vid);
}
}
static void
qeth_free_vlan_addresses4(struct qeth_card *card, unsigned short vid)
{
struct in_device *in_dev;
struct in_ifaddr *ifa;
struct qeth_ipaddr *addr;
QETH_DBF_TEXT(trace, 4, "frvaddr4");
if (!card->vlangrp)
return;
rcu_read_lock();
in_dev = __in_dev_get(card->vlangrp->vlan_devices[vid]);
if (!in_dev)
goto out;
for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
addr = qeth_get_addr_buffer(QETH_PROT_IPV4);
if (addr){
addr->u.a4.addr = ifa->ifa_address;
addr->u.a4.mask = ifa->ifa_mask;
addr->type = QETH_IP_TYPE_NORMAL;
if (!qeth_delete_ip(card, addr))
kfree(addr);
}
}
out:
rcu_read_unlock();
}
static void
qeth_free_vlan_addresses6(struct qeth_card *card, unsigned short vid)
{
#ifdef CONFIG_QETH_IPV6
struct inet6_dev *in6_dev;
struct inet6_ifaddr *ifa;
struct qeth_ipaddr *addr;
QETH_DBF_TEXT(trace, 4, "frvaddr6");
if (!card->vlangrp)
return;
in6_dev = in6_dev_get(card->vlangrp->vlan_devices[vid]);
if (!in6_dev)
return;
for (ifa = in6_dev->addr_list; ifa; ifa = ifa->lst_next){
addr = qeth_get_addr_buffer(QETH_PROT_IPV6);
if (addr){
memcpy(&addr->u.a6.addr, &ifa->addr,
sizeof(struct in6_addr));
addr->u.a6.pfxlen = ifa->prefix_len;
addr->type = QETH_IP_TYPE_NORMAL;
if (!qeth_delete_ip(card, addr))
kfree(addr);
}
}
in6_dev_put(in6_dev);
#endif /* CONFIG_QETH_IPV6 */
}
static void
qeth_layer2_send_setdelvlan(struct qeth_card *card, __u16 i,
enum qeth_ipa_cmds ipacmd)
{
int rc;
struct qeth_ipa_cmd *cmd;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT_(trace, 4, "L2sdv%x",ipacmd);
iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
cmd->data.setdelvlan.vlan_id = i;
rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
if (rc) {
PRINT_ERR("Error in processing VLAN %i on %s: 0x%x. "
"Continuing\n",i, QETH_CARD_IFNAME(card), rc);
QETH_DBF_TEXT_(trace, 2, "L2VL%4x", ipacmd);
QETH_DBF_TEXT_(trace, 2, "L2%s", CARD_BUS_ID(card));
QETH_DBF_TEXT_(trace, 2, "err%d", rc);
}
}
static void
qeth_layer2_process_vlans(struct qeth_card *card, int clear)
{
unsigned short i;
QETH_DBF_TEXT(trace, 3, "L2prcvln");
if (!card->vlangrp)
return;
for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
if (card->vlangrp->vlan_devices[i] == NULL)
continue;
if (clear)
qeth_layer2_send_setdelvlan(card, i, IPA_CMD_DELVLAN);
else
qeth_layer2_send_setdelvlan(card, i, IPA_CMD_SETVLAN);
}
}
/*add_vid is layer 2 used only ....*/
static void
qeth_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
{
struct qeth_card *card;
QETH_DBF_TEXT_(trace, 4, "aid:%d", vid);
card = (struct qeth_card *) dev->priv;
if (!card->options.layer2)
return;
qeth_layer2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
}
/*... kill_vid used for both modes*/
static void
qeth_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
{
struct qeth_card *card;
unsigned long flags;
QETH_DBF_TEXT_(trace, 4, "kid:%d", vid);
card = (struct qeth_card *) dev->priv;
/* free all skbs for the vlan device */
qeth_free_vlan_skbs(card, vid);
spin_lock_irqsave(&card->vlanlock, flags);
/* unregister IP addresses of vlan device */
qeth_free_vlan_addresses4(card, vid);
qeth_free_vlan_addresses6(card, vid);
if (card->vlangrp)
card->vlangrp->vlan_devices[vid] = NULL;
spin_unlock_irqrestore(&card->vlanlock, flags);
if (card->options.layer2)
qeth_layer2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
qeth_set_multicast_list(card->dev);
}
#endif
/**
* set multicast address on card
*/
static void
qeth_set_multicast_list(struct net_device *dev)
{
struct qeth_card *card = (struct qeth_card *) dev->priv;
QETH_DBF_TEXT(trace,3,"setmulti");
qeth_delete_mc_addresses(card);
qeth_add_multicast_ipv4(card);
#ifdef CONFIG_QETH_IPV6
qeth_add_multicast_ipv6(card);
#endif
if (qeth_set_thread_start_bit(card, QETH_SET_IP_THREAD) == 0)
schedule_work(&card->kernel_thread_starter);
}
static int
qeth_neigh_setup(struct net_device *dev, struct neigh_parms *np)
{
return 0;
}
static void
qeth_get_mac_for_ipm(__u32 ipm, char *mac, struct net_device *dev)
{
if (dev->type == ARPHRD_IEEE802_TR)
ip_tr_mc_map(ipm, mac);
else
ip_eth_mc_map(ipm, mac);
}
static struct qeth_ipaddr *
qeth_get_addr_buffer(enum qeth_prot_versions prot)
{
struct qeth_ipaddr *addr;
addr = kmalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
if (addr == NULL) {
PRINT_WARN("Not enough memory to add address\n");
return NULL;
}
memset(addr,0,sizeof(struct qeth_ipaddr));
addr->type = QETH_IP_TYPE_NORMAL;
addr->proto = prot;
return addr;
}
static void
qeth_delete_mc_addresses(struct qeth_card *card)
{
struct qeth_ipaddr *iptodo;
unsigned long flags;
QETH_DBF_TEXT(trace,4,"delmc");
iptodo = qeth_get_addr_buffer(QETH_PROT_IPV4);
if (!iptodo) {
QETH_DBF_TEXT(trace, 2, "dmcnomem");
return;
}
iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
spin_lock_irqsave(&card->ip_lock, flags);
if (!__qeth_insert_ip_todo(card, iptodo, 0))
kfree(iptodo);
spin_unlock_irqrestore(&card->ip_lock, flags);
}
static inline void
qeth_add_mc(struct qeth_card *card, struct in_device *in4_dev)
{
struct qeth_ipaddr *ipm;
struct ip_mc_list *im4;
char buf[MAX_ADDR_LEN];
QETH_DBF_TEXT(trace,4,"addmc");
for (im4 = in4_dev->mc_list; im4; im4 = im4->next) {
qeth_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
ipm = qeth_get_addr_buffer(QETH_PROT_IPV4);
if (!ipm)
continue;
ipm->u.a4.addr = im4->multiaddr;
memcpy(ipm->mac,buf,OSA_ADDR_LEN);
ipm->is_multicast = 1;
if (!qeth_add_ip(card,ipm))
kfree(ipm);
}
}
static inline void
qeth_add_vlan_mc(struct qeth_card *card)
{
#ifdef CONFIG_QETH_VLAN
struct in_device *in_dev;
struct vlan_group *vg;
int i;
QETH_DBF_TEXT(trace,4,"addmcvl");
if ( ((card->options.layer2 == 0) &&
(!qeth_is_supported(card,IPA_FULL_VLAN))) ||
(card->vlangrp == NULL) )
return ;
vg = card->vlangrp;
for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
if (vg->vlan_devices[i] == NULL ||
!(vg->vlan_devices[i]->flags & IFF_UP))
continue;
in_dev = in_dev_get(vg->vlan_devices[i]);
if (!in_dev)
continue;
read_lock(&in_dev->mc_list_lock);
qeth_add_mc(card,in_dev);
read_unlock(&in_dev->mc_list_lock);
in_dev_put(in_dev);
}
#endif
}
static void
qeth_add_multicast_ipv4(struct qeth_card *card)
{
struct in_device *in4_dev;
QETH_DBF_TEXT(trace,4,"chkmcv4");
in4_dev = in_dev_get(card->dev);
if (in4_dev == NULL)
return;
read_lock(&in4_dev->mc_list_lock);
qeth_add_mc(card, in4_dev);
qeth_add_vlan_mc(card);
read_unlock(&in4_dev->mc_list_lock);
in_dev_put(in4_dev);
}
#ifdef CONFIG_QETH_IPV6
static inline void
qeth_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
{
struct qeth_ipaddr *ipm;
struct ifmcaddr6 *im6;
char buf[MAX_ADDR_LEN];
QETH_DBF_TEXT(trace,4,"addmc6");
for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
ipm = qeth_get_addr_buffer(QETH_PROT_IPV6);
if (!ipm)
continue;
ipm->is_multicast = 1;
memcpy(ipm->mac,buf,OSA_ADDR_LEN);
memcpy(&ipm->u.a6.addr,&im6->mca_addr.s6_addr,
sizeof(struct in6_addr));
if (!qeth_add_ip(card,ipm))
kfree(ipm);
}
}
static inline void
qeth_add_vlan_mc6(struct qeth_card *card)
{
#ifdef CONFIG_QETH_VLAN
struct inet6_dev *in_dev;
struct vlan_group *vg;
int i;
QETH_DBF_TEXT(trace,4,"admc6vl");
if ( ((card->options.layer2 == 0) &&
(!qeth_is_supported(card,IPA_FULL_VLAN))) ||
(card->vlangrp == NULL))
return ;
vg = card->vlangrp;
for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
if (vg->vlan_devices[i] == NULL ||
!(vg->vlan_devices[i]->flags & IFF_UP))
continue;
in_dev = in6_dev_get(vg->vlan_devices[i]);
if (!in_dev)
continue;
read_lock(&in_dev->lock);
qeth_add_mc6(card,in_dev);
read_unlock(&in_dev->lock);
in6_dev_put(in_dev);
}
#endif /* CONFIG_QETH_VLAN */
}
static void
qeth_add_multicast_ipv6(struct qeth_card *card)
{
struct inet6_dev *in6_dev;
QETH_DBF_TEXT(trace,4,"chkmcv6");
if ((card->options.layer2 == 0) &&
(!qeth_is_supported(card, IPA_IPV6)) )
return ;
in6_dev = in6_dev_get(card->dev);
if (in6_dev == NULL)
return;
read_lock(&in6_dev->lock);
qeth_add_mc6(card, in6_dev);
qeth_add_vlan_mc6(card);
read_unlock(&in6_dev->lock);
in6_dev_put(in6_dev);
}
#endif /* CONFIG_QETH_IPV6 */
static int
qeth_layer2_send_setdelmac(struct qeth_card *card, __u8 *mac,
enum qeth_ipa_cmds ipacmd,
int (*reply_cb) (struct qeth_card *,
struct qeth_reply*,
unsigned long))
{
struct qeth_ipa_cmd *cmd;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(trace, 2, "L2sdmac");
iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
}
static int
qeth_layer2_send_setgroupmac_cb(struct qeth_card *card,
struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
__u8 *mac;
QETH_DBF_TEXT(trace, 2, "L2Sgmacb");
cmd = (struct qeth_ipa_cmd *) data;
mac = &cmd->data.setdelmac.mac[0];
/* MAC already registered, needed in couple/uncouple case */
if (cmd->hdr.return_code == 0x2005) {
PRINT_WARN("Group MAC %02x:%02x:%02x:%02x:%02x:%02x " \
"already existing on %s \n",
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
QETH_CARD_IFNAME(card));
cmd->hdr.return_code = 0;
}
if (cmd->hdr.return_code)
PRINT_ERR("Could not set group MAC " \
"%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
QETH_CARD_IFNAME(card),cmd->hdr.return_code);
return 0;
}
static int
qeth_layer2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
{
QETH_DBF_TEXT(trace, 2, "L2Sgmac");
return qeth_layer2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
qeth_layer2_send_setgroupmac_cb);
}
static int
qeth_layer2_send_delgroupmac_cb(struct qeth_card *card,
struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
__u8 *mac;
QETH_DBF_TEXT(trace, 2, "L2Dgmacb");
cmd = (struct qeth_ipa_cmd *) data;
mac = &cmd->data.setdelmac.mac[0];
if (cmd->hdr.return_code)
PRINT_ERR("Could not delete group MAC " \
"%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
QETH_CARD_IFNAME(card), cmd->hdr.return_code);
return 0;
}
static int
qeth_layer2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
{
QETH_DBF_TEXT(trace, 2, "L2Dgmac");
return qeth_layer2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
qeth_layer2_send_delgroupmac_cb);
}
static int
qeth_layer2_send_setmac_cb(struct qeth_card *card,
struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace, 2, "L2Smaccb");
cmd = (struct qeth_ipa_cmd *) data;
if (cmd->hdr.return_code) {
QETH_DBF_TEXT_(trace, 2, "L2er%x", cmd->hdr.return_code);
PRINT_WARN("Error in registering MAC address on " \
"device %s: x%x\n", CARD_BUS_ID(card),
cmd->hdr.return_code);
card->info.layer2_mac_registered = 0;
cmd->hdr.return_code = -EIO;
} else {
card->info.layer2_mac_registered = 1;
memcpy(card->dev->dev_addr,cmd->data.setdelmac.mac,
OSA_ADDR_LEN);
PRINT_INFO("MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
"successfully registered on device %s\n",
card->dev->dev_addr[0], card->dev->dev_addr[1],
card->dev->dev_addr[2], card->dev->dev_addr[3],
card->dev->dev_addr[4], card->dev->dev_addr[5],
card->dev->name);
}
return 0;
}
static int
qeth_layer2_send_setmac(struct qeth_card *card, __u8 *mac)
{
QETH_DBF_TEXT(trace, 2, "L2Setmac");
return qeth_layer2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
qeth_layer2_send_setmac_cb);
}
static int
qeth_layer2_send_delmac_cb(struct qeth_card *card,
struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace, 2, "L2Dmaccb");
cmd = (struct qeth_ipa_cmd *) data;
if (cmd->hdr.return_code) {
PRINT_WARN("Error in deregistering MAC address on " \
"device %s: x%x\n", CARD_BUS_ID(card),
cmd->hdr.return_code);
QETH_DBF_TEXT_(trace, 2, "err%d", cmd->hdr.return_code);
cmd->hdr.return_code = -EIO;
return 0;
}
card->info.layer2_mac_registered = 0;
return 0;
}
static int
qeth_layer2_send_delmac(struct qeth_card *card, __u8 *mac)
{
QETH_DBF_TEXT(trace, 2, "L2Delmac");
if (!card->info.layer2_mac_registered)
return 0;
return qeth_layer2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
qeth_layer2_send_delmac_cb);
}
static int
qeth_layer2_set_mac_address(struct net_device *dev, void *p)
{
struct sockaddr *addr = p;
struct qeth_card *card;
int rc = 0;
QETH_DBF_TEXT(trace, 3, "setmac");
if (qeth_verify_dev(dev) != QETH_REAL_CARD) {
QETH_DBF_TEXT(trace, 3, "setmcINV");
return -EOPNOTSUPP;
}
card = (struct qeth_card *) dev->priv;
if (!card->options.layer2) {
PRINT_WARN("Setting MAC address on %s is not supported"
"in Layer 3 mode.\n", dev->name);
QETH_DBF_TEXT(trace, 3, "setmcLY3");
return -EOPNOTSUPP;
}
QETH_DBF_TEXT_(trace, 3, "%s", CARD_BUS_ID(card));
QETH_DBF_HEX(trace, 3, addr->sa_data, OSA_ADDR_LEN);
rc = qeth_layer2_send_delmac(card, &card->dev->dev_addr[0]);
if (!rc)
rc = qeth_layer2_send_setmac(card, addr->sa_data);
return rc;
}
static void
qeth_fill_ipacmd_header(struct qeth_card *card, struct qeth_ipa_cmd *cmd,
__u8 command, enum qeth_prot_versions prot)
{
memset(cmd, 0, sizeof (struct qeth_ipa_cmd));
cmd->hdr.command = command;
cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
cmd->hdr.seqno = card->seqno.ipa;
cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
if (card->options.layer2)
cmd->hdr.prim_version_no = 2;
else
cmd->hdr.prim_version_no = 1;
cmd->hdr.param_count = 1;
cmd->hdr.prot_version = prot;
cmd->hdr.ipa_supported = 0;
cmd->hdr.ipa_enabled = 0;
}
static struct qeth_cmd_buffer *
qeth_get_ipacmd_buffer(struct qeth_card *card, enum qeth_ipa_cmds ipacmd,
enum qeth_prot_versions prot)
{
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
iob = qeth_wait_for_buffer(&card->write);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
return iob;
}
static int
qeth_send_setdelmc(struct qeth_card *card, struct qeth_ipaddr *addr, int ipacmd)
{
int rc;
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,4,"setdelmc");
iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
memcpy(&cmd->data.setdelipm.mac,addr->mac, OSA_ADDR_LEN);
if (addr->proto == QETH_PROT_IPV6)
memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
sizeof(struct in6_addr));
else
memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr,4);
rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
return rc;
}
static inline void
qeth_fill_netmask(u8 *netmask, unsigned int len)
{
int i,j;
for (i=0;i<16;i++) {
j=(len)-(i*8);
if (j >= 8)
netmask[i] = 0xff;
else if (j > 0)
netmask[i] = (u8)(0xFF00>>j);
else
netmask[i] = 0;
}
}
static int
qeth_send_setdelip(struct qeth_card *card, struct qeth_ipaddr *addr,
int ipacmd, unsigned int flags)
{
int rc;
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
__u8 netmask[16];
QETH_DBF_TEXT(trace,4,"setdelip");
QETH_DBF_TEXT_(trace,4,"flags%02X", flags);
iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
if (addr->proto == QETH_PROT_IPV6) {
memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
sizeof(struct in6_addr));
qeth_fill_netmask(netmask,addr->u.a6.pfxlen);
memcpy(cmd->data.setdelip6.mask, netmask,
sizeof(struct in6_addr));
cmd->data.setdelip6.flags = flags;
} else {
memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
cmd->data.setdelip4.flags = flags;
}
rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
return rc;
}
static int
qeth_layer2_register_addr_entry(struct qeth_card *card,
struct qeth_ipaddr *addr)
{
if (!addr->is_multicast)
return 0;
QETH_DBF_TEXT(trace, 2, "setgmac");
QETH_DBF_HEX(trace,3,&addr->mac[0],OSA_ADDR_LEN);
return qeth_layer2_send_setgroupmac(card, &addr->mac[0]);
}
static int
qeth_layer2_deregister_addr_entry(struct qeth_card *card,
struct qeth_ipaddr *addr)
{
if (!addr->is_multicast)
return 0;
QETH_DBF_TEXT(trace, 2, "delgmac");
QETH_DBF_HEX(trace,3,&addr->mac[0],OSA_ADDR_LEN);
return qeth_layer2_send_delgroupmac(card, &addr->mac[0]);
}
static int
qeth_layer3_register_addr_entry(struct qeth_card *card,
struct qeth_ipaddr *addr)
{
char buf[50];
int rc;
int cnt = 3;
if (addr->proto == QETH_PROT_IPV4) {
QETH_DBF_TEXT(trace, 2,"setaddr4");
QETH_DBF_HEX(trace, 3, &addr->u.a4.addr, sizeof(int));
} else if (addr->proto == QETH_PROT_IPV6) {
QETH_DBF_TEXT(trace, 2, "setaddr6");
QETH_DBF_HEX(trace,3,&addr->u.a6.addr,8);
QETH_DBF_HEX(trace,3,((char *)&addr->u.a6.addr)+8,8);
} else {
QETH_DBF_TEXT(trace, 2, "setaddr?");
QETH_DBF_HEX(trace, 3, addr, sizeof(struct qeth_ipaddr));
}
do {
if (addr->is_multicast)
rc = qeth_send_setdelmc(card, addr, IPA_CMD_SETIPM);
else
rc = qeth_send_setdelip(card, addr, IPA_CMD_SETIP,
addr->set_flags);
if (rc)
QETH_DBF_TEXT(trace, 2, "failed");
} while ((--cnt > 0) && rc);
if (rc){
QETH_DBF_TEXT(trace, 2, "FAILED");
qeth_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
PRINT_WARN("Could not register IP address %s (rc=0x%x/%d)\n",
buf, rc, rc);
}
return rc;
}
static int
qeth_layer3_deregister_addr_entry(struct qeth_card *card,
struct qeth_ipaddr *addr)
{
//char buf[50];
int rc;
if (addr->proto == QETH_PROT_IPV4) {
QETH_DBF_TEXT(trace, 2,"deladdr4");
QETH_DBF_HEX(trace, 3, &addr->u.a4.addr, sizeof(int));
} else if (addr->proto == QETH_PROT_IPV6) {
QETH_DBF_TEXT(trace, 2, "deladdr6");
QETH_DBF_HEX(trace,3,&addr->u.a6.addr,8);
QETH_DBF_HEX(trace,3,((char *)&addr->u.a6.addr)+8,8);
} else {
QETH_DBF_TEXT(trace, 2, "deladdr?");
QETH_DBF_HEX(trace, 3, addr, sizeof(struct qeth_ipaddr));
}
if (addr->is_multicast)
rc = qeth_send_setdelmc(card, addr, IPA_CMD_DELIPM);
else
rc = qeth_send_setdelip(card, addr, IPA_CMD_DELIP,
addr->del_flags);
if (rc) {
QETH_DBF_TEXT(trace, 2, "failed");
/* TODO: re-activate this warning as soon as we have a
* clean mirco code
qeth_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
PRINT_WARN("Could not deregister IP address %s (rc=%x)\n",
buf, rc);
*/
}
return rc;
}
static int
qeth_register_addr_entry(struct qeth_card *card, struct qeth_ipaddr *addr)
{
if (card->options.layer2)
return qeth_layer2_register_addr_entry(card, addr);
return qeth_layer3_register_addr_entry(card, addr);
}
static int
qeth_deregister_addr_entry(struct qeth_card *card, struct qeth_ipaddr *addr)
{
if (card->options.layer2)
return qeth_layer2_deregister_addr_entry(card, addr);
return qeth_layer3_deregister_addr_entry(card, addr);
}
static u32
qeth_ethtool_get_tx_csum(struct net_device *dev)
{
/* We may need to say that we support tx csum offload if
* we do EDDP or TSO. There are discussions going on to
* enforce rules in the stack and in ethtool that make
* SG and TSO depend on HW_CSUM. At the moment there are
* no such rules....
* If we say yes here, we have to checksum outbound packets
* any time. */
return 0;
}
static int
qeth_ethtool_set_tx_csum(struct net_device *dev, u32 data)
{
return -EINVAL;
}
static u32
qeth_ethtool_get_rx_csum(struct net_device *dev)
{
struct qeth_card *card = (struct qeth_card *)dev->priv;
return (card->options.checksum_type == HW_CHECKSUMMING);
}
static int
qeth_ethtool_set_rx_csum(struct net_device *dev, u32 data)
{
struct qeth_card *card = (struct qeth_card *)dev->priv;
if ((card->state != CARD_STATE_DOWN) &&
(card->state != CARD_STATE_RECOVER))
return -EPERM;
if (data)
card->options.checksum_type = HW_CHECKSUMMING;
else
card->options.checksum_type = SW_CHECKSUMMING;
return 0;
}
static u32
qeth_ethtool_get_sg(struct net_device *dev)
{
struct qeth_card *card = (struct qeth_card *)dev->priv;
return ((card->options.large_send != QETH_LARGE_SEND_NO) &&
(dev->features & NETIF_F_SG));
}
static int
qeth_ethtool_set_sg(struct net_device *dev, u32 data)
{
struct qeth_card *card = (struct qeth_card *)dev->priv;
if (data) {
if (card->options.large_send != QETH_LARGE_SEND_NO)
dev->features |= NETIF_F_SG;
else {
dev->features &= ~NETIF_F_SG;
return -EINVAL;
}
} else
dev->features &= ~NETIF_F_SG;
return 0;
}
static u32
qeth_ethtool_get_tso(struct net_device *dev)
{
struct qeth_card *card = (struct qeth_card *)dev->priv;
return ((card->options.large_send != QETH_LARGE_SEND_NO) &&
(dev->features & NETIF_F_TSO));
}
static int
qeth_ethtool_set_tso(struct net_device *dev, u32 data)
{
struct qeth_card *card = (struct qeth_card *)dev->priv;
if (data) {
if (card->options.large_send != QETH_LARGE_SEND_NO)
dev->features |= NETIF_F_TSO;
else {
dev->features &= ~NETIF_F_TSO;
return -EINVAL;
}
} else
dev->features &= ~NETIF_F_TSO;
return 0;
}
static struct ethtool_ops qeth_ethtool_ops = {
.get_tx_csum = qeth_ethtool_get_tx_csum,
.set_tx_csum = qeth_ethtool_set_tx_csum,
.get_rx_csum = qeth_ethtool_get_rx_csum,
.set_rx_csum = qeth_ethtool_set_rx_csum,
.get_sg = qeth_ethtool_get_sg,
.set_sg = qeth_ethtool_set_sg,
.get_tso = qeth_ethtool_get_tso,
.set_tso = qeth_ethtool_set_tso,
};
static int
qeth_netdev_init(struct net_device *dev)
{
struct qeth_card *card;
card = (struct qeth_card *) dev->priv;
QETH_DBF_TEXT(trace,3,"initdev");
dev->tx_timeout = &qeth_tx_timeout;
dev->watchdog_timeo = QETH_TX_TIMEOUT;
dev->open = qeth_open;
dev->stop = qeth_stop;
dev->hard_start_xmit = qeth_hard_start_xmit;
dev->do_ioctl = qeth_do_ioctl;
dev->get_stats = qeth_get_stats;
dev->change_mtu = qeth_change_mtu;
dev->neigh_setup = qeth_neigh_setup;
dev->set_multicast_list = qeth_set_multicast_list;
#ifdef CONFIG_QETH_VLAN
dev->vlan_rx_register = qeth_vlan_rx_register;
dev->vlan_rx_kill_vid = qeth_vlan_rx_kill_vid;
dev->vlan_rx_add_vid = qeth_vlan_rx_add_vid;
#endif
dev->hard_header = card->orig_hard_header;
if (qeth_get_netdev_flags(card) & IFF_NOARP) {
dev->rebuild_header = NULL;
dev->hard_header = NULL;
if (card->options.fake_ll)
dev->hard_header = qeth_fake_header;
dev->header_cache_update = NULL;
dev->hard_header_cache = NULL;
}
#ifdef CONFIG_QETH_IPV6
/*IPv6 address autoconfiguration stuff*/
if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
card->dev->dev_id = card->info.unique_id & 0xffff;
#endif
dev->hard_header_parse = NULL;
dev->set_mac_address = qeth_layer2_set_mac_address;
dev->flags |= qeth_get_netdev_flags(card);
if ((card->options.fake_broadcast) ||
(card->info.broadcast_capable))
dev->flags |= IFF_BROADCAST;
dev->hard_header_len =
qeth_get_hlen(card->info.link_type) + card->options.add_hhlen;
dev->addr_len = OSA_ADDR_LEN;
dev->mtu = card->info.initial_mtu;
SET_ETHTOOL_OPS(dev, &qeth_ethtool_ops);
SET_MODULE_OWNER(dev);
return 0;
}
static void
qeth_init_func_level(struct qeth_card *card)
{
if (card->ipato.enabled) {
if (card->info.type == QETH_CARD_TYPE_IQD)
card->info.func_level =
QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
else
card->info.func_level =
QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT;
} else {
if (card->info.type == QETH_CARD_TYPE_IQD)
card->info.func_level =
QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
else
card->info.func_level =
QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT;
}
}
/**
* hardsetup card, initialize MPC and QDIO stuff
*/
static int
qeth_hardsetup_card(struct qeth_card *card)
{
int retries = 3;
int rc;
QETH_DBF_TEXT(setup, 2, "hrdsetup");
retry:
if (retries < 3){
PRINT_WARN("Retrying to do IDX activates.\n");
ccw_device_set_offline(CARD_DDEV(card));
ccw_device_set_offline(CARD_WDEV(card));
ccw_device_set_offline(CARD_RDEV(card));
ccw_device_set_online(CARD_RDEV(card));
ccw_device_set_online(CARD_WDEV(card));
ccw_device_set_online(CARD_DDEV(card));
}
rc = qeth_qdio_clear_card(card,card->info.type==QETH_CARD_TYPE_OSAE);
if (rc == -ERESTARTSYS) {
QETH_DBF_TEXT(setup, 2, "break1");
return rc;
} else if (rc) {
QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
if (--retries < 0)
goto out;
else
goto retry;
}
if ((rc = qeth_get_unitaddr(card))){
QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
return rc;
}
qeth_init_tokens(card);
qeth_init_func_level(card);
rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
if (rc == -ERESTARTSYS) {
QETH_DBF_TEXT(setup, 2, "break2");
return rc;
} else if (rc) {
QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
if (--retries < 0)
goto out;
else
goto retry;
}
rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
if (rc == -ERESTARTSYS) {
QETH_DBF_TEXT(setup, 2, "break3");
return rc;
} else if (rc) {
QETH_DBF_TEXT_(setup, 2, "4err%d", rc);
if (--retries < 0)
goto out;
else
goto retry;
}
if ((rc = qeth_mpc_initialize(card))){
QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
goto out;
}
/*network device will be recovered*/
if (card->dev) {
card->dev->hard_header = card->orig_hard_header;
return 0;
}
/* at first set_online allocate netdev */
card->dev = qeth_get_netdevice(card->info.type,
card->info.link_type);
if (!card->dev){
qeth_qdio_clear_card(card, card->info.type ==
QETH_CARD_TYPE_OSAE);
rc = -ENODEV;
QETH_DBF_TEXT_(setup, 2, "6err%d", rc);
goto out;
}
card->dev->priv = card;
card->orig_hard_header = card->dev->hard_header;
card->dev->type = qeth_get_arphdr_type(card->info.type,
card->info.link_type);
card->dev->init = qeth_netdev_init;
return 0;
out:
PRINT_ERR("Initialization in hardsetup failed! rc=%d\n", rc);
return rc;
}
static int
qeth_default_setassparms_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,4,"defadpcb");
cmd = (struct qeth_ipa_cmd *) data;
if (cmd->hdr.return_code == 0){
cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
if (cmd->hdr.prot_version == QETH_PROT_IPV4)
card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
#ifdef CONFIG_QETH_IPV6
if (cmd->hdr.prot_version == QETH_PROT_IPV6)
card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
#endif
}
if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
QETH_DBF_TEXT_(trace, 3, "csum:%d", card->info.csum_mask);
}
return 0;
}
static int
qeth_default_setadapterparms_cb(struct qeth_card *card,
struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,4,"defadpcb");
cmd = (struct qeth_ipa_cmd *) data;
if (cmd->hdr.return_code == 0)
cmd->hdr.return_code = cmd->data.setadapterparms.hdr.return_code;
return 0;
}
static int
qeth_query_setadapterparms_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,3,"quyadpcb");
cmd = (struct qeth_ipa_cmd *) data;
if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f)
card->info.link_type =
cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
card->options.adp.supported_funcs =
cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
}
static int
qeth_query_setadapterparms(struct qeth_card *card)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(trace,3,"queryadp");
iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
sizeof(struct qeth_ipacmd_setadpparms));
rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
return rc;
}
static int
qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,4,"chgmaccb");
cmd = (struct qeth_ipa_cmd *) data;
memcpy(card->dev->dev_addr,
&cmd->data.setadapterparms.data.change_addr.addr,OSA_ADDR_LEN);
qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
return 0;
}
static int
qeth_setadpparms_change_macaddr(struct qeth_card *card)
{
int rc;
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,4,"chgmac");
iob = qeth_get_adapter_cmd(card,IPA_SETADP_ALTER_MAC_ADDRESS,
sizeof(struct qeth_ipacmd_setadpparms));
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
card->dev->dev_addr, OSA_ADDR_LEN);
rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
NULL);
return rc;
}
static int
qeth_send_setadp_mode(struct qeth_card *card, __u32 command, __u32 mode)
{
int rc;
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,4,"adpmode");
iob = qeth_get_adapter_cmd(card, command,
sizeof(struct qeth_ipacmd_setadpparms));
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
cmd->data.setadapterparms.data.mode = mode;
rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
NULL);
return rc;
}
static inline int
qeth_setadapter_hstr(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(trace,4,"adphstr");
if (qeth_adp_supported(card,IPA_SETADP_SET_BROADCAST_MODE)) {
rc = qeth_send_setadp_mode(card, IPA_SETADP_SET_BROADCAST_MODE,
card->options.broadcast_mode);
if (rc)
PRINT_WARN("couldn't set broadcast mode on "
"device %s: x%x\n",
CARD_BUS_ID(card), rc);
rc = qeth_send_setadp_mode(card, IPA_SETADP_ALTER_MAC_ADDRESS,
card->options.macaddr_mode);
if (rc)
PRINT_WARN("couldn't set macaddr mode on "
"device %s: x%x\n", CARD_BUS_ID(card), rc);
return rc;
}
if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
PRINT_WARN("set adapter parameters not available "
"to set broadcast mode, using ALLRINGS "
"on device %s:\n", CARD_BUS_ID(card));
if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
PRINT_WARN("set adapter parameters not available "
"to set macaddr mode, using NONCANONICAL "
"on device %s:\n", CARD_BUS_ID(card));
return 0;
}
static int
qeth_setadapter_parms(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(setup, 2, "setadprm");
if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)){
PRINT_WARN("set adapter parameters not supported "
"on device %s.\n",
CARD_BUS_ID(card));
QETH_DBF_TEXT(setup, 2, " notsupp");
return 0;
}
rc = qeth_query_setadapterparms(card);
if (rc) {
PRINT_WARN("couldn't set adapter parameters on device %s: "
"x%x\n", CARD_BUS_ID(card), rc);
return rc;
}
if (qeth_adp_supported(card,IPA_SETADP_ALTER_MAC_ADDRESS)) {
rc = qeth_setadpparms_change_macaddr(card);
if (rc)
PRINT_WARN("couldn't get MAC address on "
"device %s: x%x\n",
CARD_BUS_ID(card), rc);
}
if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
(card->info.link_type == QETH_LINK_TYPE_LANE_TR))
rc = qeth_setadapter_hstr(card);
return rc;
}
static int
qeth_layer2_initialize(struct qeth_card *card)
{
int rc = 0;
QETH_DBF_TEXT(setup, 2, "doL2init");
QETH_DBF_TEXT_(setup, 2, "doL2%s", CARD_BUS_ID(card));
rc = qeth_setadpparms_change_macaddr(card);
if (rc) {
PRINT_WARN("couldn't get MAC address on "
"device %s: x%x\n",
CARD_BUS_ID(card), rc);
QETH_DBF_TEXT_(setup, 2,"1err%d",rc);
return rc;
}
QETH_DBF_HEX(setup,2, card->dev->dev_addr, OSA_ADDR_LEN);
rc = qeth_layer2_send_setmac(card, &card->dev->dev_addr[0]);
if (rc)
QETH_DBF_TEXT_(setup, 2,"2err%d",rc);
return 0;
}
static int
qeth_send_startstoplan(struct qeth_card *card, enum qeth_ipa_cmds ipacmd,
enum qeth_prot_versions prot)
{
int rc;
struct qeth_cmd_buffer *iob;
iob = qeth_get_ipacmd_buffer(card,ipacmd,prot);
rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
return rc;
}
static int
qeth_send_startlan(struct qeth_card *card, enum qeth_prot_versions prot)
{
int rc;
QETH_DBF_TEXT_(setup, 2, "strtlan%i", prot);
rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, prot);
return rc;
}
static int
qeth_send_stoplan(struct qeth_card *card)
{
int rc = 0;
/*
* TODO: according to the IPA format document page 14,
* TCP/IP (we!) never issue a STOPLAN
* is this right ?!?
*/
QETH_DBF_TEXT(trace, 2, "stoplan");
rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, QETH_PROT_IPV4);
return rc;
}
static int
qeth_query_ipassists_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(setup, 2, "qipasscb");
cmd = (struct qeth_ipa_cmd *) data;
if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
} else {
#ifdef CONFIG_QETH_IPV6
card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
#endif
}
QETH_DBF_TEXT(setup, 2, "suppenbl");
QETH_DBF_TEXT_(setup, 2, "%x",cmd->hdr.ipa_supported);
QETH_DBF_TEXT_(setup, 2, "%x",cmd->hdr.ipa_enabled);
return 0;
}
static int
qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT_(setup, 2, "qipassi%i", prot);
if (card->options.layer2) {
QETH_DBF_TEXT(setup, 2, "noprmly2");
return -EPERM;
}
iob = qeth_get_ipacmd_buffer(card,IPA_CMD_QIPASSIST,prot);
rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
return rc;
}
static struct qeth_cmd_buffer *
qeth_get_setassparms_cmd(struct qeth_card *card, enum qeth_ipa_funcs ipa_func,
__u16 cmd_code, __u16 len,
enum qeth_prot_versions prot)
{
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,4,"getasscm");
iob = qeth_get_ipacmd_buffer(card,IPA_CMD_SETASSPARMS,prot);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
cmd->data.setassparms.hdr.assist_no = ipa_func;
cmd->data.setassparms.hdr.length = 8 + len;
cmd->data.setassparms.hdr.command_code = cmd_code;
cmd->data.setassparms.hdr.return_code = 0;
cmd->data.setassparms.hdr.seq_no = 0;
return iob;
}
static int
qeth_send_setassparms(struct qeth_card *card, struct qeth_cmd_buffer *iob,
__u16 len, long data,
int (*reply_cb)
(struct qeth_card *,struct qeth_reply *,unsigned long),
void *reply_param)
{
int rc;
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,4,"sendassp");
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
if (len <= sizeof(__u32))
cmd->data.setassparms.data.flags_32bit = (__u32) data;
else if (len > sizeof(__u32))
memcpy(&cmd->data.setassparms.data, (void *) data, len);
rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
return rc;
}
#ifdef CONFIG_QETH_IPV6
static int
qeth_send_simple_setassparms_ipv6(struct qeth_card *card,
enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(trace,4,"simassp6");
iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
0, QETH_PROT_IPV6);
rc = qeth_send_setassparms(card, iob, 0, 0,
qeth_default_setassparms_cb, NULL);
return rc;
}
#endif
static int
qeth_send_simple_setassparms(struct qeth_card *card,
enum qeth_ipa_funcs ipa_func,
__u16 cmd_code, long data)
{
int rc;
int length = 0;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(trace,4,"simassp4");
if (data)
length = sizeof(__u32);
iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
length, QETH_PROT_IPV4);
rc = qeth_send_setassparms(card, iob, length, data,
qeth_default_setassparms_cb, NULL);
return rc;
}
static inline int
qeth_start_ipa_arp_processing(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(trace,3,"ipaarp");
if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
PRINT_WARN("ARP processing not supported "
"on %s!\n", QETH_CARD_IFNAME(card));
return 0;
}
rc = qeth_send_simple_setassparms(card,IPA_ARP_PROCESSING,
IPA_CMD_ASS_START, 0);
if (rc) {
PRINT_WARN("Could not start ARP processing "
"assist on %s: 0x%x\n",
QETH_CARD_IFNAME(card), rc);
}
return rc;
}
static int
qeth_start_ipa_ip_fragmentation(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(trace,3,"ipaipfrg");
if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
PRINT_INFO("Hardware IP fragmentation not supported on %s\n",
QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
rc = qeth_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
IPA_CMD_ASS_START, 0);
if (rc) {
PRINT_WARN("Could not start Hardware IP fragmentation "
"assist on %s: 0x%x\n",
QETH_CARD_IFNAME(card), rc);
} else
PRINT_INFO("Hardware IP fragmentation enabled \n");
return rc;
}
static int
qeth_start_ipa_source_mac(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(trace,3,"stsrcmac");
if (!card->options.fake_ll)
return -EOPNOTSUPP;
if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
PRINT_INFO("Inbound source address not "
"supported on %s\n", QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
IPA_CMD_ASS_START, 0);
if (rc)
PRINT_WARN("Could not start inbound source "
"assist on %s: 0x%x\n",
QETH_CARD_IFNAME(card), rc);
return rc;
}
static int
qeth_start_ipa_vlan(struct qeth_card *card)
{
int rc = 0;
QETH_DBF_TEXT(trace,3,"strtvlan");
#ifdef CONFIG_QETH_VLAN
if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
PRINT_WARN("VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
IPA_CMD_ASS_START,0);
if (rc) {
PRINT_WARN("Could not start vlan "
"assist on %s: 0x%x\n",
QETH_CARD_IFNAME(card), rc);
} else {
PRINT_INFO("VLAN enabled \n");
card->dev->features |=
NETIF_F_HW_VLAN_FILTER |
NETIF_F_HW_VLAN_TX |
NETIF_F_HW_VLAN_RX;
}
#endif /* QETH_VLAN */
return rc;
}
static int
qeth_start_ipa_multicast(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(trace,3,"stmcast");
if (!qeth_is_supported(card, IPA_MULTICASTING)) {
PRINT_WARN("Multicast not supported on %s\n",
QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
IPA_CMD_ASS_START,0);
if (rc) {
PRINT_WARN("Could not start multicast "
"assist on %s: rc=%i\n",
QETH_CARD_IFNAME(card), rc);
} else {
PRINT_INFO("Multicast enabled\n");
card->dev->flags |= IFF_MULTICAST;
}
return rc;
}
#ifdef CONFIG_QETH_IPV6
static int
qeth_softsetup_ipv6(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(trace,3,"softipv6");
netif_stop_queue(card->dev);
rc = qeth_send_startlan(card, QETH_PROT_IPV6);
if (rc) {
PRINT_ERR("IPv6 startlan failed on %s\n",
QETH_CARD_IFNAME(card));
return rc;
}
netif_wake_queue(card->dev);
rc = qeth_query_ipassists(card,QETH_PROT_IPV6);
if (rc) {
PRINT_ERR("IPv6 query ipassist failed on %s\n",
QETH_CARD_IFNAME(card));
return rc;
}
rc = qeth_send_simple_setassparms(card, IPA_IPV6,
IPA_CMD_ASS_START, 3);
if (rc) {
PRINT_WARN("IPv6 start assist (version 4) failed "
"on %s: 0x%x\n",
QETH_CARD_IFNAME(card), rc);
return rc;
}
rc = qeth_send_simple_setassparms_ipv6(card, IPA_IPV6,
IPA_CMD_ASS_START);
if (rc) {
PRINT_WARN("IPV6 start assist (version 6) failed "
"on %s: 0x%x\n",
QETH_CARD_IFNAME(card), rc);
return rc;
}
rc = qeth_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
IPA_CMD_ASS_START);
if (rc) {
PRINT_WARN("Could not enable passthrough "
"on %s: 0x%x\n",
QETH_CARD_IFNAME(card), rc);
return rc;
}
PRINT_INFO("IPV6 enabled \n");
return 0;
}
#endif
static int
qeth_start_ipa_ipv6(struct qeth_card *card)
{
int rc = 0;
#ifdef CONFIG_QETH_IPV6
QETH_DBF_TEXT(trace,3,"strtipv6");
if (!qeth_is_supported(card, IPA_IPV6)) {
PRINT_WARN("IPv6 not supported on %s\n",
QETH_CARD_IFNAME(card));
return 0;
}
rc = qeth_softsetup_ipv6(card);
#endif
return rc ;
}
static int
qeth_start_ipa_broadcast(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(trace,3,"stbrdcst");
card->info.broadcast_capable = 0;
if (!qeth_is_supported(card, IPA_FILTERING)) {
PRINT_WARN("Broadcast not supported on %s\n",
QETH_CARD_IFNAME(card));
rc = -EOPNOTSUPP;
goto out;
}
rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
IPA_CMD_ASS_START, 0);
if (rc) {
PRINT_WARN("Could not enable broadcasting filtering "
"on %s: 0x%x\n",
QETH_CARD_IFNAME(card), rc);
goto out;
}
rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
IPA_CMD_ASS_CONFIGURE, 1);
if (rc) {
PRINT_WARN("Could not set up broadcast filtering on %s: 0x%x\n",
QETH_CARD_IFNAME(card), rc);
goto out;
}
card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
PRINT_INFO("Broadcast enabled \n");
rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
IPA_CMD_ASS_ENABLE, 1);
if (rc) {
PRINT_WARN("Could not set up broadcast echo filtering on "
"%s: 0x%x\n", QETH_CARD_IFNAME(card), rc);
goto out;
}
card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
out:
if (card->info.broadcast_capable)
card->dev->flags |= IFF_BROADCAST;
else
card->dev->flags &= ~IFF_BROADCAST;
return rc;
}
static int
qeth_send_checksum_command(struct qeth_card *card)
{
int rc;
rc = qeth_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
IPA_CMD_ASS_START, 0);
if (rc) {
PRINT_WARN("Starting Inbound HW Checksumming failed on %s: "
"0x%x,\ncontinuing using Inbound SW Checksumming\n",
QETH_CARD_IFNAME(card), rc);
return rc;
}
rc = qeth_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
IPA_CMD_ASS_ENABLE,
card->info.csum_mask);
if (rc) {
PRINT_WARN("Enabling Inbound HW Checksumming failed on %s: "
"0x%x,\ncontinuing using Inbound SW Checksumming\n",
QETH_CARD_IFNAME(card), rc);
return rc;
}
return 0;
}
static int
qeth_start_ipa_checksum(struct qeth_card *card)
{
int rc = 0;
QETH_DBF_TEXT(trace,3,"strtcsum");
if (card->options.checksum_type == NO_CHECKSUMMING) {
PRINT_WARN("Using no checksumming on %s.\n",
QETH_CARD_IFNAME(card));
return 0;
}
if (card->options.checksum_type == SW_CHECKSUMMING) {
PRINT_WARN("Using SW checksumming on %s.\n",
QETH_CARD_IFNAME(card));
return 0;
}
if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
PRINT_WARN("Inbound HW Checksumming not "
"supported on %s,\ncontinuing "
"using Inbound SW Checksumming\n",
QETH_CARD_IFNAME(card));
card->options.checksum_type = SW_CHECKSUMMING;
return 0;
}
rc = qeth_send_checksum_command(card);
if (!rc) {
PRINT_INFO("HW Checksumming (inbound) enabled \n");
}
return rc;
}
static int
qeth_start_ipa_tso(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(trace,3,"sttso");
if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
PRINT_WARN("Outbound TSO not supported on %s\n",
QETH_CARD_IFNAME(card));
rc = -EOPNOTSUPP;
} else {
rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
IPA_CMD_ASS_START,0);
if (rc)
PRINT_WARN("Could not start outbound TSO "
"assist on %s: rc=%i\n",
QETH_CARD_IFNAME(card), rc);
else
PRINT_INFO("Outbound TSO enabled\n");
}
if (rc && (card->options.large_send == QETH_LARGE_SEND_TSO)){
card->options.large_send = QETH_LARGE_SEND_NO;
card->dev->features &= ~ (NETIF_F_TSO | NETIF_F_SG);
}
return rc;
}
static int
qeth_start_ipassists(struct qeth_card *card)
{
QETH_DBF_TEXT(trace,3,"strtipas");
qeth_start_ipa_arp_processing(card); /* go on*/
qeth_start_ipa_ip_fragmentation(card); /* go on*/
qeth_start_ipa_source_mac(card); /* go on*/
qeth_start_ipa_vlan(card); /* go on*/
qeth_start_ipa_multicast(card); /* go on*/
qeth_start_ipa_ipv6(card); /* go on*/
qeth_start_ipa_broadcast(card); /* go on*/
qeth_start_ipa_checksum(card); /* go on*/
qeth_start_ipa_tso(card); /* go on*/
return 0;
}
static int
qeth_send_setrouting(struct qeth_card *card, enum qeth_routing_types type,
enum qeth_prot_versions prot)
{
int rc;
struct qeth_ipa_cmd *cmd;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(trace,4,"setroutg");
iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
cmd->data.setrtg.type = (type);
rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
return rc;
}
static void
qeth_correct_routing_type(struct qeth_card *card, enum qeth_routing_types *type,
enum qeth_prot_versions prot)
{
if (card->info.type == QETH_CARD_TYPE_IQD) {
switch (*type) {
case NO_ROUTER:
case PRIMARY_CONNECTOR:
case SECONDARY_CONNECTOR:
case MULTICAST_ROUTER:
return;
default:
goto out_inval;
}
} else {
switch (*type) {
case NO_ROUTER:
case PRIMARY_ROUTER:
case SECONDARY_ROUTER:
return;
case MULTICAST_ROUTER:
if (qeth_is_ipafunc_supported(card, prot,
IPA_OSA_MC_ROUTER))
return;
default:
goto out_inval;
}
}
out_inval:
PRINT_WARN("Routing type '%s' not supported for interface %s.\n"
"Router status set to 'no router'.\n",
((*type == PRIMARY_ROUTER)? "primary router" :
(*type == SECONDARY_ROUTER)? "secondary router" :
(*type == PRIMARY_CONNECTOR)? "primary connector" :
(*type == SECONDARY_CONNECTOR)? "secondary connector" :
(*type == MULTICAST_ROUTER)? "multicast router" :
"unknown"),
card->dev->name);
*type = NO_ROUTER;
}
int
qeth_setrouting_v4(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(trace,3,"setrtg4");
qeth_correct_routing_type(card, &card->options.route4.type,
QETH_PROT_IPV4);
rc = qeth_send_setrouting(card, card->options.route4.type,
QETH_PROT_IPV4);
if (rc) {
card->options.route4.type = NO_ROUTER;
PRINT_WARN("Error (0x%04x) while setting routing type on %s. "
"Type set to 'no router'.\n",
rc, QETH_CARD_IFNAME(card));
}
return rc;
}
int
qeth_setrouting_v6(struct qeth_card *card)
{
int rc = 0;
QETH_DBF_TEXT(trace,3,"setrtg6");
#ifdef CONFIG_QETH_IPV6
qeth_correct_routing_type(card, &card->options.route6.type,
QETH_PROT_IPV6);
if ((card->options.route6.type == NO_ROUTER) ||
((card->info.type == QETH_CARD_TYPE_OSAE) &&
(card->options.route6.type == MULTICAST_ROUTER) &&
!qeth_is_supported6(card,IPA_OSA_MC_ROUTER)))
return 0;
rc = qeth_send_setrouting(card, card->options.route6.type,
QETH_PROT_IPV6);
if (rc) {
card->options.route6.type = NO_ROUTER;
PRINT_WARN("Error (0x%04x) while setting routing type on %s. "
"Type set to 'no router'.\n",
rc, QETH_CARD_IFNAME(card));
}
#endif
return rc;
}
int
qeth_set_large_send(struct qeth_card *card)
{
int rc = 0;
if (card->dev == NULL)
return 0;
netif_stop_queue(card->dev);
switch (card->options.large_send) {
case QETH_LARGE_SEND_EDDP:
card->dev->features |= NETIF_F_TSO | NETIF_F_SG;
break;
case QETH_LARGE_SEND_TSO:
if (qeth_is_supported(card, IPA_OUTBOUND_TSO)){
card->dev->features |= NETIF_F_TSO | NETIF_F_SG;
} else {
PRINT_WARN("TSO not supported on %s. "
"large_send set to 'no'.\n",
card->dev->name);
card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
card->options.large_send = QETH_LARGE_SEND_NO;
rc = -EOPNOTSUPP;
}
break;
default: /* includes QETH_LARGE_SEND_NO */
card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
break;
}
netif_wake_queue(card->dev);
return rc;
}
/*
* softsetup card: init IPA stuff
*/
static int
qeth_softsetup_card(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(setup, 2, "softsetp");
if ((rc = qeth_send_startlan(card, QETH_PROT_IPV4))){
QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
if (rc == 0xe080){
PRINT_WARN("LAN on card %s if offline! "
"Continuing softsetup.\n",
CARD_BUS_ID(card));
card->lan_online = 0;
} else
return rc;
} else
card->lan_online = 1;
if (card->options.layer2) {
card->dev->features |=
NETIF_F_HW_VLAN_FILTER |
NETIF_F_HW_VLAN_TX |
NETIF_F_HW_VLAN_RX;
card->dev->flags|=IFF_MULTICAST|IFF_BROADCAST;
card->info.broadcast_capable=1;
if ((rc = qeth_layer2_initialize(card))) {
QETH_DBF_TEXT_(setup, 2, "L2err%d", rc);
return rc;
}
#ifdef CONFIG_QETH_VLAN
qeth_layer2_process_vlans(card, 0);
#endif
goto out;
}
if ((card->options.large_send == QETH_LARGE_SEND_EDDP) ||
(card->options.large_send == QETH_LARGE_SEND_TSO))
card->dev->features |= NETIF_F_TSO | NETIF_F_SG;
else
card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
if ((rc = qeth_setadapter_parms(card)))
QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
if ((rc = qeth_start_ipassists(card)))
QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
if ((rc = qeth_setrouting_v4(card)))
QETH_DBF_TEXT_(setup, 2, "4err%d", rc);
if ((rc = qeth_setrouting_v6(card)))
QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
out:
netif_stop_queue(card->dev);
return 0;
}
#ifdef CONFIG_QETH_IPV6
static int
qeth_get_unique_id_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
cmd = (struct qeth_ipa_cmd *) data;
if (cmd->hdr.return_code == 0)
card->info.unique_id = *((__u16 *)
&cmd->data.create_destroy_addr.unique_id[6]);
else {
card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
UNIQUE_ID_NOT_BY_CARD;
PRINT_WARN("couldn't get a unique id from the card on device "
"%s (result=x%x), using default id. ipv6 "
"autoconfig on other lpars may lead to duplicate "
"ip addresses. please use manually "
"configured ones.\n",
CARD_BUS_ID(card), cmd->hdr.return_code);
}
return 0;
}
#endif
static int
qeth_put_unique_id(struct qeth_card *card)
{
int rc = 0;
#ifdef CONFIG_QETH_IPV6
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,2,"puniqeid");
if ((card->info.unique_id & UNIQUE_ID_NOT_BY_CARD) ==
UNIQUE_ID_NOT_BY_CARD)
return -1;
iob = qeth_get_ipacmd_buffer(card, IPA_CMD_DESTROY_ADDR,
QETH_PROT_IPV6);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
*((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
card->info.unique_id;
memcpy(&cmd->data.create_destroy_addr.unique_id[0],
card->dev->dev_addr, OSA_ADDR_LEN);
rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
#else
card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
UNIQUE_ID_NOT_BY_CARD;
#endif
return rc;
}
/**
* Clear IP List
*/
static void
qeth_clear_ip_list(struct qeth_card *card, int clean, int recover)
{
struct qeth_ipaddr *addr, *tmp;
unsigned long flags;
QETH_DBF_TEXT(trace,4,"clearip");
spin_lock_irqsave(&card->ip_lock, flags);
/* clear todo list */
list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry){
list_del(&addr->entry);
kfree(addr);
}
while (!list_empty(&card->ip_list)) {
addr = list_entry(card->ip_list.next,
struct qeth_ipaddr, entry);
list_del_init(&addr->entry);
if (clean) {
spin_unlock_irqrestore(&card->ip_lock, flags);
qeth_deregister_addr_entry(card, addr);
spin_lock_irqsave(&card->ip_lock, flags);
}
if (!recover || addr->is_multicast) {
kfree(addr);
continue;
}
list_add_tail(&addr->entry, card->ip_tbd_list);
}
spin_unlock_irqrestore(&card->ip_lock, flags);
}
static void
qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
int clear_start_mask)
{
unsigned long flags;
spin_lock_irqsave(&card->thread_mask_lock, flags);
card->thread_allowed_mask = threads;
if (clear_start_mask)
card->thread_start_mask &= threads;
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
wake_up(&card->wait_q);
}
static inline int
qeth_threads_running(struct qeth_card *card, unsigned long threads)
{
unsigned long flags;
int rc = 0;
spin_lock_irqsave(&card->thread_mask_lock, flags);
rc = (card->thread_running_mask & threads);
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
return rc;
}
static int
qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
{
return wait_event_interruptible(card->wait_q,
qeth_threads_running(card, threads) == 0);
}
static int
qeth_stop_card(struct qeth_card *card, int recovery_mode)
{
int rc = 0;
QETH_DBF_TEXT(setup ,2,"stopcard");
QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
qeth_set_allowed_threads(card, 0, 1);
if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD))
return -ERESTARTSYS;
if (card->read.state == CH_STATE_UP &&
card->write.state == CH_STATE_UP &&
(card->state == CARD_STATE_UP)) {
if(recovery_mode) {
qeth_stop(card->dev);
} else {
rtnl_lock();
dev_close(card->dev);
rtnl_unlock();
}
if (!card->use_hard_stop) {
__u8 *mac = &card->dev->dev_addr[0];
rc = qeth_layer2_send_delmac(card, mac);
QETH_DBF_TEXT_(setup, 2, "Lerr%d", rc);
if ((rc = qeth_send_stoplan(card)))
QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
}
card->state = CARD_STATE_SOFTSETUP;
}
if (card->state == CARD_STATE_SOFTSETUP) {
#ifdef CONFIG_QETH_VLAN
if (card->options.layer2)
qeth_layer2_process_vlans(card, 1);
#endif
qeth_clear_ip_list(card, !card->use_hard_stop, 1);
qeth_clear_ipacmd_list(card);
card->state = CARD_STATE_HARDSETUP;
}
if (card->state == CARD_STATE_HARDSETUP) {
if ((!card->use_hard_stop) &&
(!card->options.layer2))
if ((rc = qeth_put_unique_id(card)))
QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
qeth_qdio_clear_card(card, 0);
qeth_clear_qdio_buffers(card);
qeth_clear_working_pool_list(card);
card->state = CARD_STATE_DOWN;
}
if (card->state == CARD_STATE_DOWN) {
qeth_clear_cmd_buffers(&card->read);
qeth_clear_cmd_buffers(&card->write);
}
card->use_hard_stop = 0;
return rc;
}
static int
qeth_get_unique_id(struct qeth_card *card)
{
int rc = 0;
#ifdef CONFIG_QETH_IPV6
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(setup, 2, "guniqeid");
if (!qeth_is_supported(card,IPA_IPV6)) {
card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
UNIQUE_ID_NOT_BY_CARD;
return 0;
}
iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
QETH_PROT_IPV6);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
*((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
card->info.unique_id;
rc = qeth_send_ipa_cmd(card, iob, qeth_get_unique_id_cb, NULL);
#else
card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
UNIQUE_ID_NOT_BY_CARD;
#endif
return rc;
}
static void
qeth_print_status_with_portname(struct qeth_card *card)
{
char dbf_text[15];
int i;
sprintf(dbf_text, "%s", card->info.portname + 1);
for (i = 0; i < 8; i++)
dbf_text[i] =
(char) _ebcasc[(__u8) dbf_text[i]];
dbf_text[8] = 0;
printk("qeth: Device %s/%s/%s is a%s card%s%s%s\n"
"with link type %s (portname: %s)\n",
CARD_RDEV_ID(card),
CARD_WDEV_ID(card),
CARD_DDEV_ID(card),
qeth_get_cardname(card),
(card->info.mcl_level[0]) ? " (level: " : "",
(card->info.mcl_level[0]) ? card->info.mcl_level : "",
(card->info.mcl_level[0]) ? ")" : "",
qeth_get_cardname_short(card),
dbf_text);
}
static void
qeth_print_status_no_portname(struct qeth_card *card)
{
if (card->info.portname[0])
printk("qeth: Device %s/%s/%s is a%s "
"card%s%s%s\nwith link type %s "
"(no portname needed by interface).\n",
CARD_RDEV_ID(card),
CARD_WDEV_ID(card),
CARD_DDEV_ID(card),
qeth_get_cardname(card),
(card->info.mcl_level[0]) ? " (level: " : "",
(card->info.mcl_level[0]) ? card->info.mcl_level : "",
(card->info.mcl_level[0]) ? ")" : "",
qeth_get_cardname_short(card));
else
printk("qeth: Device %s/%s/%s is a%s "
"card%s%s%s\nwith link type %s.\n",
CARD_RDEV_ID(card),
CARD_WDEV_ID(card),
CARD_DDEV_ID(card),
qeth_get_cardname(card),
(card->info.mcl_level[0]) ? " (level: " : "",
(card->info.mcl_level[0]) ? card->info.mcl_level : "",
(card->info.mcl_level[0]) ? ")" : "",
qeth_get_cardname_short(card));
}
static void
qeth_print_status_message(struct qeth_card *card)
{
switch (card->info.type) {
case QETH_CARD_TYPE_OSAE:
/* VM will use a non-zero first character
* to indicate a HiperSockets like reporting
* of the level OSA sets the first character to zero
* */
if (!card->info.mcl_level[0]) {
sprintf(card->info.mcl_level,"%02x%02x",
card->info.mcl_level[2],
card->info.mcl_level[3]);
card->info.mcl_level[QETH_MCL_LENGTH] = 0;
break;
}
/* fallthrough */
case QETH_CARD_TYPE_IQD:
card->info.mcl_level[0] = (char) _ebcasc[(__u8)
card->info.mcl_level[0]];
card->info.mcl_level[1] = (char) _ebcasc[(__u8)
card->info.mcl_level[1]];
card->info.mcl_level[2] = (char) _ebcasc[(__u8)
card->info.mcl_level[2]];
card->info.mcl_level[3] = (char) _ebcasc[(__u8)
card->info.mcl_level[3]];
card->info.mcl_level[QETH_MCL_LENGTH] = 0;
break;
default:
memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
}
if (card->info.portname_required)
qeth_print_status_with_portname(card);
else
qeth_print_status_no_portname(card);
}
static int
qeth_register_netdev(struct qeth_card *card)
{
QETH_DBF_TEXT(setup, 3, "regnetd");
if (card->dev->reg_state != NETREG_UNINITIALIZED) {
qeth_netdev_init(card->dev);
return 0;
}
/* sysfs magic */
SET_NETDEV_DEV(card->dev, &card->gdev->dev);
return register_netdev(card->dev);
}
static void
qeth_start_again(struct qeth_card *card, int recovery_mode)
{
QETH_DBF_TEXT(setup ,2, "startag");
if(recovery_mode) {
qeth_open(card->dev);
} else {
rtnl_lock();
dev_open(card->dev);
rtnl_unlock();
}
/* this also sets saved unicast addresses */
qeth_set_multicast_list(card->dev);
}
/* Layer 2 specific stuff */
#define IGNORE_PARAM_EQ(option,value,reset_value,msg) \
if (card->options.option == value) { \
PRINT_ERR("%s not supported with layer 2 " \
"functionality, ignoring option on read" \
"channel device %s .\n",msg,CARD_RDEV_ID(card)); \
card->options.option = reset_value; \
}
#define IGNORE_PARAM_NEQ(option,value,reset_value,msg) \
if (card->options.option != value) { \
PRINT_ERR("%s not supported with layer 2 " \
"functionality, ignoring option on read" \
"channel device %s .\n",msg,CARD_RDEV_ID(card)); \
card->options.option = reset_value; \
}
static void qeth_make_parameters_consistent(struct qeth_card *card)
{
if (card->options.layer2) {
if (card->info.type == QETH_CARD_TYPE_IQD) {
PRINT_ERR("Device %s does not support " \
"layer 2 functionality. " \
"Ignoring layer2 option.\n",CARD_BUS_ID(card));
}
IGNORE_PARAM_NEQ(route4.type, NO_ROUTER, NO_ROUTER,
"Routing options are");
#ifdef CONFIG_QETH_IPV6
IGNORE_PARAM_NEQ(route6.type, NO_ROUTER, NO_ROUTER,
"Routing options are");
#endif
IGNORE_PARAM_EQ(checksum_type, HW_CHECKSUMMING,
QETH_CHECKSUM_DEFAULT,
"Checksumming options are");
IGNORE_PARAM_NEQ(broadcast_mode, QETH_TR_BROADCAST_ALLRINGS,
QETH_TR_BROADCAST_ALLRINGS,
"Broadcast mode options are");
IGNORE_PARAM_NEQ(macaddr_mode, QETH_TR_MACADDR_NONCANONICAL,
QETH_TR_MACADDR_NONCANONICAL,
"Canonical MAC addr options are");
IGNORE_PARAM_NEQ(fake_broadcast, 0, 0,
"Broadcast faking options are");
IGNORE_PARAM_NEQ(add_hhlen, DEFAULT_ADD_HHLEN,
DEFAULT_ADD_HHLEN,"Option add_hhlen is");
IGNORE_PARAM_NEQ(fake_ll, 0, 0,"Option fake_ll is");
}
}
static int
__qeth_set_online(struct ccwgroup_device *gdev, int recovery_mode)
{
struct qeth_card *card = gdev->dev.driver_data;
int rc = 0;
enum qeth_card_states recover_flag;
BUG_ON(!card);
QETH_DBF_TEXT(setup ,2, "setonlin");
QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD)){
PRINT_WARN("set_online of card %s interrupted by user!\n",
CARD_BUS_ID(card));
return -ERESTARTSYS;
}
recover_flag = card->state;
if ((rc = ccw_device_set_online(CARD_RDEV(card))) ||
(rc = ccw_device_set_online(CARD_WDEV(card))) ||
(rc = ccw_device_set_online(CARD_DDEV(card)))){
QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
return -EIO;
}
if (card->options.layer2)
qeth_make_parameters_consistent(card);
if ((rc = qeth_hardsetup_card(card))){
QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
goto out_remove;
}
card->state = CARD_STATE_HARDSETUP;
if (!(rc = qeth_query_ipassists(card,QETH_PROT_IPV4)))
rc = qeth_get_unique_id(card);
if (rc && card->options.layer2 == 0) {
QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
goto out_remove;
}
qeth_print_status_message(card);
if ((rc = qeth_register_netdev(card))){
QETH_DBF_TEXT_(setup, 2, "4err%d", rc);
goto out_remove;
}
if ((rc = qeth_softsetup_card(card))){
QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
goto out_remove;
}
card->state = CARD_STATE_SOFTSETUP;
if ((rc = qeth_init_qdio_queues(card))){
QETH_DBF_TEXT_(setup, 2, "6err%d", rc);
goto out_remove;
}
/*maybe it was set offline without ifconfig down
* we can also use this state for recovery purposes*/
qeth_set_allowed_threads(card, 0xffffffff, 0);
if (recover_flag == CARD_STATE_RECOVER)
qeth_start_again(card, recovery_mode);
qeth_notify_processes();
return 0;
out_remove:
card->use_hard_stop = 1;
qeth_stop_card(card, 0);
ccw_device_set_offline(CARD_DDEV(card));
ccw_device_set_offline(CARD_WDEV(card));
ccw_device_set_offline(CARD_RDEV(card));
if (recover_flag == CARD_STATE_RECOVER)
card->state = CARD_STATE_RECOVER;
else
card->state = CARD_STATE_DOWN;
return -ENODEV;
}
static int
qeth_set_online(struct ccwgroup_device *gdev)
{
return __qeth_set_online(gdev, 0);
}
static struct ccw_device_id qeth_ids[] = {
{CCW_DEVICE(0x1731, 0x01), driver_info:QETH_CARD_TYPE_OSAE},
{CCW_DEVICE(0x1731, 0x05), driver_info:QETH_CARD_TYPE_IQD},
{},
};
MODULE_DEVICE_TABLE(ccw, qeth_ids);
struct device *qeth_root_dev = NULL;
struct ccwgroup_driver qeth_ccwgroup_driver = {
.owner = THIS_MODULE,
.name = "qeth",
.driver_id = 0xD8C5E3C8,
.probe = qeth_probe_device,
.remove = qeth_remove_device,
.set_online = qeth_set_online,
.set_offline = qeth_set_offline,
};
struct ccw_driver qeth_ccw_driver = {
.name = "qeth",
.ids = qeth_ids,
.probe = ccwgroup_probe_ccwdev,
.remove = ccwgroup_remove_ccwdev,
};
static void
qeth_unregister_dbf_views(void)
{
if (qeth_dbf_setup)
debug_unregister(qeth_dbf_setup);
if (qeth_dbf_qerr)
debug_unregister(qeth_dbf_qerr);
if (qeth_dbf_sense)
debug_unregister(qeth_dbf_sense);
if (qeth_dbf_misc)
debug_unregister(qeth_dbf_misc);
if (qeth_dbf_data)
debug_unregister(qeth_dbf_data);
if (qeth_dbf_control)
debug_unregister(qeth_dbf_control);
if (qeth_dbf_trace)
debug_unregister(qeth_dbf_trace);
}
static int
qeth_register_dbf_views(void)
{
qeth_dbf_setup = debug_register(QETH_DBF_SETUP_NAME,
QETH_DBF_SETUP_INDEX,
QETH_DBF_SETUP_NR_AREAS,
QETH_DBF_SETUP_LEN);
qeth_dbf_misc = debug_register(QETH_DBF_MISC_NAME,
QETH_DBF_MISC_INDEX,
QETH_DBF_MISC_NR_AREAS,
QETH_DBF_MISC_LEN);
qeth_dbf_data = debug_register(QETH_DBF_DATA_NAME,
QETH_DBF_DATA_INDEX,
QETH_DBF_DATA_NR_AREAS,
QETH_DBF_DATA_LEN);
qeth_dbf_control = debug_register(QETH_DBF_CONTROL_NAME,
QETH_DBF_CONTROL_INDEX,
QETH_DBF_CONTROL_NR_AREAS,
QETH_DBF_CONTROL_LEN);
qeth_dbf_sense = debug_register(QETH_DBF_SENSE_NAME,
QETH_DBF_SENSE_INDEX,
QETH_DBF_SENSE_NR_AREAS,
QETH_DBF_SENSE_LEN);
qeth_dbf_qerr = debug_register(QETH_DBF_QERR_NAME,
QETH_DBF_QERR_INDEX,
QETH_DBF_QERR_NR_AREAS,
QETH_DBF_QERR_LEN);
qeth_dbf_trace = debug_register(QETH_DBF_TRACE_NAME,
QETH_DBF_TRACE_INDEX,
QETH_DBF_TRACE_NR_AREAS,
QETH_DBF_TRACE_LEN);
if ((qeth_dbf_setup == NULL) || (qeth_dbf_misc == NULL) ||
(qeth_dbf_data == NULL) || (qeth_dbf_control == NULL) ||
(qeth_dbf_sense == NULL) || (qeth_dbf_qerr == NULL) ||
(qeth_dbf_trace == NULL)) {
qeth_unregister_dbf_views();
return -ENOMEM;
}
debug_register_view(qeth_dbf_setup, &debug_hex_ascii_view);
debug_set_level(qeth_dbf_setup, QETH_DBF_SETUP_LEVEL);
debug_register_view(qeth_dbf_misc, &debug_hex_ascii_view);
debug_set_level(qeth_dbf_misc, QETH_DBF_MISC_LEVEL);
debug_register_view(qeth_dbf_data, &debug_hex_ascii_view);
debug_set_level(qeth_dbf_data, QETH_DBF_DATA_LEVEL);
debug_register_view(qeth_dbf_control, &debug_hex_ascii_view);
debug_set_level(qeth_dbf_control, QETH_DBF_CONTROL_LEVEL);
debug_register_view(qeth_dbf_sense, &debug_hex_ascii_view);
debug_set_level(qeth_dbf_sense, QETH_DBF_SENSE_LEVEL);
debug_register_view(qeth_dbf_qerr, &debug_hex_ascii_view);
debug_set_level(qeth_dbf_qerr, QETH_DBF_QERR_LEVEL);
debug_register_view(qeth_dbf_trace, &debug_hex_ascii_view);
debug_set_level(qeth_dbf_trace, QETH_DBF_TRACE_LEVEL);
return 0;
}
#ifdef CONFIG_QETH_IPV6
extern struct neigh_table arp_tbl;
static struct neigh_ops *arp_direct_ops;
static int (*qeth_old_arp_constructor) (struct neighbour *);
static struct neigh_ops arp_direct_ops_template = {
.family = AF_INET,
.destructor = NULL,
.solicit = NULL,
.error_report = NULL,
.output = dev_queue_xmit,
.connected_output = dev_queue_xmit,
.hh_output = dev_queue_xmit,
.queue_xmit = dev_queue_xmit
};
static int
qeth_arp_constructor(struct neighbour *neigh)
{
struct net_device *dev = neigh->dev;
struct in_device *in_dev;
struct neigh_parms *parms;
struct qeth_card *card;
card = qeth_get_card_from_dev(dev);
if (card == NULL)
goto out;
if((card->options.layer2) ||
(card->dev->hard_header == qeth_fake_header))
goto out;
rcu_read_lock();
in_dev = rcu_dereference(__in_dev_get(dev));
if (in_dev == NULL) {
rcu_read_unlock();
return -EINVAL;
}
parms = in_dev->arp_parms;
__neigh_parms_put(neigh->parms);
neigh->parms = neigh_parms_clone(parms);
rcu_read_unlock();
neigh->type = inet_addr_type(*(u32 *) neigh->primary_key);
neigh->nud_state = NUD_NOARP;
neigh->ops = arp_direct_ops;
neigh->output = neigh->ops->queue_xmit;
return 0;
out:
return qeth_old_arp_constructor(neigh);
}
#endif /*CONFIG_QETH_IPV6*/
/*
* IP address takeover related functions
*/
static void
qeth_clear_ipato_list(struct qeth_card *card)
{
struct qeth_ipato_entry *ipatoe, *tmp;
unsigned long flags;
spin_lock_irqsave(&card->ip_lock, flags);
list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
list_del(&ipatoe->entry);
kfree(ipatoe);
}
spin_unlock_irqrestore(&card->ip_lock, flags);
}
int
qeth_add_ipato_entry(struct qeth_card *card, struct qeth_ipato_entry *new)
{
struct qeth_ipato_entry *ipatoe;
unsigned long flags;
int rc = 0;
QETH_DBF_TEXT(trace, 2, "addipato");
spin_lock_irqsave(&card->ip_lock, flags);
list_for_each_entry(ipatoe, &card->ipato.entries, entry){
if (ipatoe->proto != new->proto)
continue;
if (!memcmp(ipatoe->addr, new->addr,
(ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
(ipatoe->mask_bits == new->mask_bits)){
PRINT_WARN("ipato entry already exists!\n");
rc = -EEXIST;
break;
}
}
if (!rc) {
list_add_tail(&new->entry, &card->ipato.entries);
}
spin_unlock_irqrestore(&card->ip_lock, flags);
return rc;
}
void
qeth_del_ipato_entry(struct qeth_card *card, enum qeth_prot_versions proto,
u8 *addr, int mask_bits)
{
struct qeth_ipato_entry *ipatoe, *tmp;
unsigned long flags;
QETH_DBF_TEXT(trace, 2, "delipato");
spin_lock_irqsave(&card->ip_lock, flags);
list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry){
if (ipatoe->proto != proto)
continue;
if (!memcmp(ipatoe->addr, addr,
(proto == QETH_PROT_IPV4)? 4:16) &&
(ipatoe->mask_bits == mask_bits)){
list_del(&ipatoe->entry);
kfree(ipatoe);
}
}
spin_unlock_irqrestore(&card->ip_lock, flags);
}
static inline void
qeth_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
{
int i, j;
u8 octet;
for (i = 0; i < len; ++i){
octet = addr[i];
for (j = 7; j >= 0; --j){
bits[i*8 + j] = octet & 1;
octet >>= 1;
}
}
}
static int
qeth_is_addr_covered_by_ipato(struct qeth_card *card, struct qeth_ipaddr *addr)
{
struct qeth_ipato_entry *ipatoe;
u8 addr_bits[128] = {0, };
u8 ipatoe_bits[128] = {0, };
int rc = 0;
if (!card->ipato.enabled)
return 0;
qeth_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
(addr->proto == QETH_PROT_IPV4)? 4:16);
list_for_each_entry(ipatoe, &card->ipato.entries, entry){
if (addr->proto != ipatoe->proto)
continue;
qeth_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
(ipatoe->proto==QETH_PROT_IPV4) ?
4:16);
if (addr->proto == QETH_PROT_IPV4)
rc = !memcmp(addr_bits, ipatoe_bits,
min(32, ipatoe->mask_bits));
else
rc = !memcmp(addr_bits, ipatoe_bits,
min(128, ipatoe->mask_bits));
if (rc)
break;
}
/* invert? */
if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
rc = !rc;
else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
rc = !rc;
return rc;
}
/*
* VIPA related functions
*/
int
qeth_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
const u8 *addr)
{
struct qeth_ipaddr *ipaddr;
unsigned long flags;
int rc = 0;
ipaddr = qeth_get_addr_buffer(proto);
if (ipaddr){
if (proto == QETH_PROT_IPV4){
QETH_DBF_TEXT(trace, 2, "addvipa4");
memcpy(&ipaddr->u.a4.addr, addr, 4);
ipaddr->u.a4.mask = 0;
#ifdef CONFIG_QETH_IPV6
} else if (proto == QETH_PROT_IPV6){
QETH_DBF_TEXT(trace, 2, "addvipa6");
memcpy(&ipaddr->u.a6.addr, addr, 16);
ipaddr->u.a6.pfxlen = 0;
#endif
}
ipaddr->type = QETH_IP_TYPE_VIPA;
ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
} else
return -ENOMEM;
spin_lock_irqsave(&card->ip_lock, flags);
if (__qeth_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
__qeth_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
rc = -EEXIST;
spin_unlock_irqrestore(&card->ip_lock, flags);
if (rc){
PRINT_WARN("Cannot add VIPA. Address already exists!\n");
return rc;
}
if (!qeth_add_ip(card, ipaddr))
kfree(ipaddr);
if (qeth_set_thread_start_bit(card, QETH_SET_IP_THREAD) == 0)
schedule_work(&card->kernel_thread_starter);
return rc;
}
void
qeth_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
const u8 *addr)
{
struct qeth_ipaddr *ipaddr;
ipaddr = qeth_get_addr_buffer(proto);
if (ipaddr){
if (proto == QETH_PROT_IPV4){
QETH_DBF_TEXT(trace, 2, "delvipa4");
memcpy(&ipaddr->u.a4.addr, addr, 4);
ipaddr->u.a4.mask = 0;
#ifdef CONFIG_QETH_IPV6
} else if (proto == QETH_PROT_IPV6){
QETH_DBF_TEXT(trace, 2, "delvipa6");
memcpy(&ipaddr->u.a6.addr, addr, 16);
ipaddr->u.a6.pfxlen = 0;
#endif
}
ipaddr->type = QETH_IP_TYPE_VIPA;
} else
return;
if (!qeth_delete_ip(card, ipaddr))
kfree(ipaddr);
if (qeth_set_thread_start_bit(card, QETH_SET_IP_THREAD) == 0)
schedule_work(&card->kernel_thread_starter);
}
/*
* proxy ARP related functions
*/
int
qeth_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
const u8 *addr)
{
struct qeth_ipaddr *ipaddr;
unsigned long flags;
int rc = 0;
ipaddr = qeth_get_addr_buffer(proto);
if (ipaddr){
if (proto == QETH_PROT_IPV4){
QETH_DBF_TEXT(trace, 2, "addrxip4");
memcpy(&ipaddr->u.a4.addr, addr, 4);
ipaddr->u.a4.mask = 0;
#ifdef CONFIG_QETH_IPV6
} else if (proto == QETH_PROT_IPV6){
QETH_DBF_TEXT(trace, 2, "addrxip6");
memcpy(&ipaddr->u.a6.addr, addr, 16);
ipaddr->u.a6.pfxlen = 0;
#endif
}
ipaddr->type = QETH_IP_TYPE_RXIP;
ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
ipaddr->del_flags = 0;
} else
return -ENOMEM;
spin_lock_irqsave(&card->ip_lock, flags);
if (__qeth_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
__qeth_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
rc = -EEXIST;
spin_unlock_irqrestore(&card->ip_lock, flags);
if (rc){
PRINT_WARN("Cannot add RXIP. Address already exists!\n");
return rc;
}
if (!qeth_add_ip(card, ipaddr))
kfree(ipaddr);
if (qeth_set_thread_start_bit(card, QETH_SET_IP_THREAD) == 0)
schedule_work(&card->kernel_thread_starter);
return 0;
}
void
qeth_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
const u8 *addr)
{
struct qeth_ipaddr *ipaddr;
ipaddr = qeth_get_addr_buffer(proto);
if (ipaddr){
if (proto == QETH_PROT_IPV4){
QETH_DBF_TEXT(trace, 2, "addrxip4");
memcpy(&ipaddr->u.a4.addr, addr, 4);
ipaddr->u.a4.mask = 0;
#ifdef CONFIG_QETH_IPV6
} else if (proto == QETH_PROT_IPV6){
QETH_DBF_TEXT(trace, 2, "addrxip6");
memcpy(&ipaddr->u.a6.addr, addr, 16);
ipaddr->u.a6.pfxlen = 0;
#endif
}
ipaddr->type = QETH_IP_TYPE_RXIP;
} else
return;
if (!qeth_delete_ip(card, ipaddr))
kfree(ipaddr);
if (qeth_set_thread_start_bit(card, QETH_SET_IP_THREAD) == 0)
schedule_work(&card->kernel_thread_starter);
}
/**
* IP event handler
*/
static int
qeth_ip_event(struct notifier_block *this,
unsigned long event,void *ptr)
{
struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
struct net_device *dev =(struct net_device *) ifa->ifa_dev->dev;
struct qeth_ipaddr *addr;
struct qeth_card *card;
QETH_DBF_TEXT(trace,3,"ipevent");
card = qeth_get_card_from_dev(dev);
if (!card)
return NOTIFY_DONE;
if (card->options.layer2)
return NOTIFY_DONE;
addr = qeth_get_addr_buffer(QETH_PROT_IPV4);
if (addr != NULL) {
addr->u.a4.addr = ifa->ifa_address;
addr->u.a4.mask = ifa->ifa_mask;
addr->type = QETH_IP_TYPE_NORMAL;
} else
goto out;
switch(event) {
case NETDEV_UP:
if (!qeth_add_ip(card, addr))
kfree(addr);
break;
case NETDEV_DOWN:
if (!qeth_delete_ip(card, addr))
kfree(addr);
break;
default:
break;
}
if (qeth_set_thread_start_bit(card, QETH_SET_IP_THREAD) == 0)
schedule_work(&card->kernel_thread_starter);
out:
return NOTIFY_DONE;
}
static struct notifier_block qeth_ip_notifier = {
qeth_ip_event,
0
};
#ifdef CONFIG_QETH_IPV6
/**
* IPv6 event handler
*/
static int
qeth_ip6_event(struct notifier_block *this,
unsigned long event,void *ptr)
{
struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
struct net_device *dev = (struct net_device *)ifa->idev->dev;
struct qeth_ipaddr *addr;
struct qeth_card *card;
QETH_DBF_TEXT(trace,3,"ip6event");
card = qeth_get_card_from_dev(dev);
if (!card)
return NOTIFY_DONE;
if (!qeth_is_supported(card, IPA_IPV6))
return NOTIFY_DONE;
addr = qeth_get_addr_buffer(QETH_PROT_IPV6);
if (addr != NULL) {
memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
addr->u.a6.pfxlen = ifa->prefix_len;
addr->type = QETH_IP_TYPE_NORMAL;
} else
goto out;
switch(event) {
case NETDEV_UP:
if (!qeth_add_ip(card, addr))
kfree(addr);
break;
case NETDEV_DOWN:
if (!qeth_delete_ip(card, addr))
kfree(addr);
break;
default:
break;
}
if (qeth_set_thread_start_bit(card, QETH_SET_IP_THREAD) == 0)
schedule_work(&card->kernel_thread_starter);
out:
return NOTIFY_DONE;
}
static struct notifier_block qeth_ip6_notifier = {
qeth_ip6_event,
0
};
#endif
static int
qeth_reboot_event(struct notifier_block *this, unsigned long event, void *ptr)
{
struct device *entry;
struct qeth_card *card;
down_read(&qeth_ccwgroup_driver.driver.bus->subsys.rwsem);
list_for_each_entry(entry, &qeth_ccwgroup_driver.driver.devices,
driver_list) {
card = (struct qeth_card *) entry->driver_data;
qeth_clear_ip_list(card, 0, 0);
qeth_qdio_clear_card(card, 0);
}
up_read(&qeth_ccwgroup_driver.driver.bus->subsys.rwsem);
return NOTIFY_DONE;
}
static struct notifier_block qeth_reboot_notifier = {
qeth_reboot_event,
0
};
static int
qeth_register_notifiers(void)
{
int r;
QETH_DBF_TEXT(trace,5,"regnotif");
if ((r = register_reboot_notifier(&qeth_reboot_notifier)))
return r;
if ((r = register_inetaddr_notifier(&qeth_ip_notifier)))
goto out_reboot;
#ifdef CONFIG_QETH_IPV6
if ((r = register_inet6addr_notifier(&qeth_ip6_notifier)))
goto out_ipv4;
#endif
return 0;
#ifdef CONFIG_QETH_IPV6
out_ipv4:
unregister_inetaddr_notifier(&qeth_ip_notifier);
#endif
out_reboot:
unregister_reboot_notifier(&qeth_reboot_notifier);
return r;
}
/**
* unregister all event notifiers
*/
static void
qeth_unregister_notifiers(void)
{
QETH_DBF_TEXT(trace,5,"unregnot");
BUG_ON(unregister_reboot_notifier(&qeth_reboot_notifier));
BUG_ON(unregister_inetaddr_notifier(&qeth_ip_notifier));
#ifdef CONFIG_QETH_IPV6
BUG_ON(unregister_inet6addr_notifier(&qeth_ip6_notifier));
#endif /* QETH_IPV6 */
}
#ifdef CONFIG_QETH_IPV6
static int
qeth_ipv6_init(void)
{
qeth_old_arp_constructor = arp_tbl.constructor;
write_lock(&arp_tbl.lock);
arp_tbl.constructor = qeth_arp_constructor;
write_unlock(&arp_tbl.lock);
arp_direct_ops = (struct neigh_ops*)
kmalloc(sizeof(struct neigh_ops), GFP_KERNEL);
if (!arp_direct_ops)
return -ENOMEM;
memcpy(arp_direct_ops, &arp_direct_ops_template,
sizeof(struct neigh_ops));
return 0;
}
static void
qeth_ipv6_uninit(void)
{
write_lock(&arp_tbl.lock);
arp_tbl.constructor = qeth_old_arp_constructor;
write_unlock(&arp_tbl.lock);
kfree(arp_direct_ops);
}
#endif /* CONFIG_QETH_IPV6 */
static void
qeth_sysfs_unregister(void)
{
qeth_remove_driver_attributes();
ccw_driver_unregister(&qeth_ccw_driver);
ccwgroup_driver_unregister(&qeth_ccwgroup_driver);
s390_root_dev_unregister(qeth_root_dev);
}
/**
* register qeth at sysfs
*/
static int
qeth_sysfs_register(void)
{
int rc=0;
rc = ccwgroup_driver_register(&qeth_ccwgroup_driver);
if (rc)
return rc;
rc = ccw_driver_register(&qeth_ccw_driver);
if (rc)
return rc;
rc = qeth_create_driver_attributes();
if (rc)
return rc;
qeth_root_dev = s390_root_dev_register("qeth");
if (IS_ERR(qeth_root_dev)) {
rc = PTR_ERR(qeth_root_dev);
return rc;
}
return 0;
}
/***
* init function
*/
static int __init
qeth_init(void)
{
int rc=0;
qeth_eyecatcher();
PRINT_INFO("loading %s (%s/%s/%s/%s/%s/%s/%s %s %s)\n",
version, VERSION_QETH_C, VERSION_QETH_H,
VERSION_QETH_MPC_H, VERSION_QETH_MPC_C,
VERSION_QETH_FS_H, VERSION_QETH_PROC_C,
VERSION_QETH_SYS_C, QETH_VERSION_IPV6,
QETH_VERSION_VLAN);
INIT_LIST_HEAD(&qeth_card_list.list);
INIT_LIST_HEAD(&qeth_notify_list);
spin_lock_init(&qeth_notify_lock);
rwlock_init(&qeth_card_list.rwlock);
if (qeth_register_dbf_views())
goto out_err;
if (qeth_sysfs_register())
goto out_sysfs;
#ifdef CONFIG_QETH_IPV6
if (qeth_ipv6_init()) {
PRINT_ERR("Out of memory during ipv6 init.\n");
goto out_sysfs;
}
#endif /* QETH_IPV6 */
if (qeth_register_notifiers())
goto out_ipv6;
if (qeth_create_procfs_entries())
goto out_notifiers;
return rc;
out_notifiers:
qeth_unregister_notifiers();
out_ipv6:
#ifdef CONFIG_QETH_IPV6
qeth_ipv6_uninit();
#endif /* QETH_IPV6 */
out_sysfs:
qeth_sysfs_unregister();
qeth_unregister_dbf_views();
out_err:
PRINT_ERR("Initialization failed");
return rc;
}
static void
__exit qeth_exit(void)
{
struct qeth_card *card, *tmp;
unsigned long flags;
QETH_DBF_TEXT(trace,1, "cleanup.");
/*
* Weed would not need to clean up our devices here, because the
* common device layer calls qeth_remove_device for each device
* as soon as we unregister our driver (done in qeth_sysfs_unregister).
* But we do cleanup here so we can do a "soft" shutdown of our cards.
* qeth_remove_device called by the common device layer would otherwise
* do a "hard" shutdown (card->use_hard_stop is set to one in
* qeth_remove_device).
*/
again:
read_lock_irqsave(&qeth_card_list.rwlock, flags);
list_for_each_entry_safe(card, tmp, &qeth_card_list.list, list){
read_unlock_irqrestore(&qeth_card_list.rwlock, flags);
qeth_set_offline(card->gdev);
qeth_remove_device(card->gdev);
goto again;
}
read_unlock_irqrestore(&qeth_card_list.rwlock, flags);
#ifdef CONFIG_QETH_IPV6
qeth_ipv6_uninit();
#endif
qeth_unregister_notifiers();
qeth_remove_procfs_entries();
qeth_sysfs_unregister();
qeth_unregister_dbf_views();
printk("qeth: removed\n");
}
EXPORT_SYMBOL(qeth_eyecatcher);
module_init(qeth_init);
module_exit(qeth_exit);
MODULE_AUTHOR("Frank Pavlic <pavlic@de.ibm.com>");
MODULE_DESCRIPTION("Linux on zSeries OSA Express and HiperSockets support\n" \
"Copyright 2000,2003 IBM Corporation\n");
MODULE_LICENSE("GPL");
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