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authorNeta Ostrovsky <netao@nvidia.com>2021-04-18 16:41:23 +0300
committerJason Gunthorpe <jgg@nvidia.com>2021-04-22 16:30:27 +0300
commit12ce208f40c757e70d7af60100e814be0d2f01bd (patch)
tree2c02e484f7b674a4f23bf339ed5a274814ca6633 /drivers/infiniband
parentcb5cd0ea4eb3ce338a593a5331ddb4986ae20faa (diff)
downloadlinux-12ce208f40c757e70d7af60100e814be0d2f01bd.tar.xz
RDMA/nldev: Return context information
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>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/core/nldev.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
index b8dc002a2478..d33d212298f6 100644
--- a/drivers/infiniband/core/nldev.c
+++ b/drivers/infiniband/core/nldev.c
@@ -92,7 +92,9 @@ static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
[RDMA_NLDEV_ATTR_RES_CQE] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_CQN] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_CQ_ENTRY] = { .type = NLA_NESTED },
+ [RDMA_NLDEV_ATTR_RES_CTX] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_CTXN] = { .type = NLA_U32 },
+ [RDMA_NLDEV_ATTR_RES_CTX_ENTRY] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_DST_ADDR] = {
.len = sizeof(struct __kernel_sockaddr_storage) },
[RDMA_NLDEV_ATTR_RES_IOVA] = { .type = NLA_U64 },
@@ -703,6 +705,20 @@ static int fill_res_pd_entry(struct sk_buff *msg, bool has_cap_net_admin,
err: return -EMSGSIZE;
}
+static int fill_res_ctx_entry(struct sk_buff *msg, bool has_cap_net_admin,
+ struct rdma_restrack_entry *res, uint32_t port)
+{
+ struct ib_ucontext *ctx = container_of(res, struct ib_ucontext, res);
+
+ if (rdma_is_kernel_res(res))
+ return 0;
+
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CTXN, ctx->res.id))
+ return -EMSGSIZE;
+
+ return fill_res_name_pid(msg, res);
+}
+
static int fill_stat_counter_mode(struct sk_buff *msg,
struct rdma_counter *counter)
{
@@ -1236,6 +1252,12 @@ static const struct nldev_fill_res_entry fill_entries[RDMA_RESTRACK_MAX] = {
.entry = RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY,
.id = RDMA_NLDEV_ATTR_STAT_COUNTER_ID,
},
+ [RDMA_RESTRACK_CTX] = {
+ .nldev_attr = RDMA_NLDEV_ATTR_RES_CTX,
+ .flags = NLDEV_PER_DEV,
+ .entry = RDMA_NLDEV_ATTR_RES_CTX_ENTRY,
+ .id = RDMA_NLDEV_ATTR_RES_CTXN,
+ },
};
static int res_get_common_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
@@ -1476,6 +1498,7 @@ RES_GET_FUNCS(pd, RDMA_RESTRACK_PD);
RES_GET_FUNCS(mr, RDMA_RESTRACK_MR);
RES_GET_FUNCS(mr_raw, RDMA_RESTRACK_MR);
RES_GET_FUNCS(counter, RDMA_RESTRACK_COUNTER);
+RES_GET_FUNCS(ctx, RDMA_RESTRACK_CTX);
static LIST_HEAD(link_ops);
static DECLARE_RWSEM(link_ops_rwsem);
@@ -2139,6 +2162,10 @@ static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
.doit = nldev_res_get_pd_doit,
.dump = nldev_res_get_pd_dumpit,
},
+ [RDMA_NLDEV_CMD_RES_CTX_GET] = {
+ .doit = nldev_res_get_ctx_doit,
+ .dump = nldev_res_get_ctx_dumpit,
+ },
[RDMA_NLDEV_CMD_SYS_GET] = {
.doit = nldev_sys_get_doit,
},