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RDMA/nldev: Return context information

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Extend the RDMA nldev return a context information, like ctx number and
process ID that created that context. This functionality is helpful to
find orphan contexts that are not closed for some reason.

Sample output:

$ rdma res show ctx
dev ibp8s0f0 ctxn 0 pid 980 comm ibv_rc_pingpong
dev ibp8s0f0 ctxn 1 pid 981 comm ibv_rc_pingpong
dev ibp8s0f0 ctxn 2 pid 992 comm ibv_rc_pingpong
dev ibp8s0f1 ctxn 0 pid 984 comm ibv_rc_pingpong
dev ibp8s0f1 ctxn 1 pid 987 comm ibv_rc_pingpong

$ rdma res show ctx dev ibp8s0f1
dev ibp8s0f1 ctxn 0 pid 984 comm ibv_rc_pingpong
dev ibp8s0f1 ctxn 1 pid 987 comm ibv_rc_pingpong

Link: https://lore.kernel.org/r/5c956acfeac4e9d532988575f3da7d64cb449374.1618753110.git.leonro@nvidia.com
Signed-off-by: Neta Ostrovsky <netao@nvidia.com>
Reviewed-by: Mark Zhang <markzhang@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Neta Ostrovsky
2021-04-22 10:30:27 -03:00
committed by Jason Gunthorpe
parent cb5cd0ea4e
commit 12ce208f40
2 changed files with 32 additions and 0 deletions
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include/uapi/rdma/rdma_netlink.h
+5
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@@ -293,6 +293,8 @@ enum rdma_nldev_command {
RDMA_NLDEV_CMD_RES_MR_GET_RAW,
RDMA_NLDEV_CMD_RES_CTX_GET, /* can dump */
RDMA_NLDEV_NUM_OPS
};
@@ -533,6 +535,9 @@ enum rdma_nldev_attr {
RDMA_NLDEV_ATTR_RES_RAW, /* binary */
RDMA_NLDEV_ATTR_RES_CTX, /* nested table */
RDMA_NLDEV_ATTR_RES_CTX_ENTRY, /* nested table */
/*
* Always the end
*/