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RDMA/nldev: Add explicit pad attribute

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Add a specific RDMA_NLDEV_ATTR_PAD attribute to be used for 64b
attribute padding.  To preserve the ABI, make this attribute equal to
RDMA_NLDEV_ATTR_UNSPEC, which has a value of 0, because that has been
used up until now as the pad attribute.

Change all the previous use of 0 as the pad with this
new enum.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Steve Wise 2018-05-03 08:40:49 -07:00 committed by Doug Ledford
parent ffab8c89ba
commit 25a0ad8515
2 changed files with 18 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/infiniband/core/nldev.c
View File

@ -122,7 +122,8 @@ static int fill_dev_info(struct sk_buff *msg, struct ib_device *device)
BUILD_BUG_ON(sizeof(device->attrs.device_cap_flags) != sizeof(u64));
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS,
device->attrs.device_cap_flags, 0))
device->attrs.device_cap_flags,
RDMA_NLDEV_ATTR_PAD))
return -EMSGSIZE;
ib_get_device_fw_str(device, fw);
@ -131,10 +132,12 @@ static int fill_dev_info(struct sk_buff *msg, struct ib_device *device)
return -EMSGSIZE;
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_NODE_GUID,
be64_to_cpu(device->node_guid), 0))
be64_to_cpu(device->node_guid),
RDMA_NLDEV_ATTR_PAD))
return -EMSGSIZE;
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_SYS_IMAGE_GUID,
be64_to_cpu(device->attrs.sys_image_guid), 0))
be64_to_cpu(device->attrs.sys_image_guid),
RDMA_NLDEV_ATTR_PAD))
return -EMSGSIZE;
if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_NODE_TYPE, device->node_type))
return -EMSGSIZE;
@ -161,11 +164,11 @@ static int fill_port_info(struct sk_buff *msg,
BUILD_BUG_ON(sizeof(attr.port_cap_flags) > sizeof(u64));
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS,
(u64)attr.port_cap_flags, 0))
(u64)attr.port_cap_flags, RDMA_NLDEV_ATTR_PAD))
return -EMSGSIZE;
if (rdma_protocol_ib(device, port) &&
nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_SUBNET_PREFIX,
attr.subnet_prefix, 0))
attr.subnet_prefix, RDMA_NLDEV_ATTR_PAD))
return -EMSGSIZE;
if (rdma_protocol_ib(device, port)) {
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_LID, attr.lid))
@ -209,8 +212,8 @@ static int fill_res_info_entry(struct sk_buff *msg,
if (nla_put_string(msg, RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME, name))
goto err;
if (nla_put_u64_64bit(msg,
RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR, curr, 0))
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR, curr,
RDMA_NLDEV_ATTR_PAD))
goto err;
nla_nest_end(msg, entry_attr);
@ -409,7 +412,7 @@ static int fill_res_cq_entry(struct sk_buff *msg, struct netlink_callback *cb,
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQE, cq->cqe))
goto err;
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT,
atomic_read(&cq->usecnt), 0))
atomic_read(&cq->usecnt), RDMA_NLDEV_ATTR_PAD))
goto err;
/* Poll context is only valid for kernel CQs */
@ -445,11 +448,12 @@ static int fill_res_mr_entry(struct sk_buff *msg, struct netlink_callback *cb,
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LKEY, mr->lkey))
goto err;
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_IOVA,
mr->iova, 0))
mr->iova, RDMA_NLDEV_ATTR_PAD))
goto err;
}
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_MRLEN, mr->length, 0))
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_MRLEN, mr->length,
RDMA_NLDEV_ATTR_PAD))
goto err;
if (fill_res_name_pid(msg, res))
@ -484,7 +488,7 @@ static int fill_res_pd_entry(struct sk_buff *msg, struct netlink_callback *cb,
goto err;
}
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT,
atomic_read(&pd->usecnt), 0))
atomic_read(&pd->usecnt), RDMA_NLDEV_ATTR_PAD))
goto err;
if ((pd->flags & IB_PD_UNSAFE_GLOBAL_RKEY) &&
nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY,

3
include/uapi/rdma/rdma_netlink.h
View File

@ -253,6 +253,9 @@ enum rdma_nldev_attr {
/* don't change the order or add anything between, this is ABI! */
RDMA_NLDEV_ATTR_UNSPEC,
/* Pad attribute for 64b alignment */
RDMA_NLDEV_ATTR_PAD = RDMA_NLDEV_ATTR_UNSPEC,
/* Identifier for ib_device */
RDMA_NLDEV_ATTR_DEV_INDEX, /* u32 */