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rdma: Add PD resource tracking information

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Sample output:

Without CAP_NET_ADMIN capability:

dev mlx4_0 users 0 pid 0 comm [ib_srpt]
dev mlx4_0 users 0 pid 0 comm [ib_srp]
dev mlx4_0 users 1 pid 0 comm [ib_core]
dev cxgb4_0 users 0 pid 0 comm [ib_srp]

With CAP_NET_ADMIN capability:
dev mlx4_0 local_dma_lkey 0x8000 users 0 pid 0 comm [ib_srpt]
dev mlx4_0 local_dma_lkey 0x8000 users 0 pid 0 comm [ib_srp]
dev mlx4_0 local_dma_lkey 0x8000 users 1 pid 0 comm [ib_core]
dev cxgb4_0 local_dma_lkey 0x0 users 0 pid 0 comm [ib_srp]

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
This commit is contained in:
Steve Wise 2018-03-29 09:10:44 -07:00 committed by David Ahern
parent 8958a15c04
commit 4060e4c0d2
1 changed files with 95 additions and 0 deletions
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95
rdma/res.c
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@ -927,6 +927,91 @@ static int res_mr_parse_cb(const struct nlmsghdr *nlh, void *data)
return MNL_CB_OK;
}
static int res_pd_parse_cb(const struct nlmsghdr *nlh, void *data)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
struct nlattr *nla_table, *nla_entry;
struct rd *rd = data;
const char *name;
uint32_t idx;
mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
!tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
!tb[RDMA_NLDEV_ATTR_RES_PD])
return MNL_CB_ERROR;
name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
nla_table = tb[RDMA_NLDEV_ATTR_RES_PD];
mnl_attr_for_each_nested(nla_entry, nla_table) {
uint32_t local_dma_lkey = 0, unsafe_global_rkey = 0;
struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
char *comm = NULL;
uint32_t pid = 0;
uint64_t users;
int err;
err = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
if (err != MNL_CB_OK)
return MNL_CB_ERROR;
if (!nla_line[RDMA_NLDEV_ATTR_RES_USECNT] ||
(!nla_line[RDMA_NLDEV_ATTR_RES_PID] &&
!nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])) {
return MNL_CB_ERROR;
}
if (nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY])
local_dma_lkey = mnl_attr_get_u32(
nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY]);
users = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
if (rd_check_is_filtered(rd, "users", users))
continue;
if (nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY])
unsafe_global_rkey = mnl_attr_get_u32(
nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]);
if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {
pid = mnl_attr_get_u32(
nla_line[RDMA_NLDEV_ATTR_RES_PID]);
comm = get_task_name(pid);
}
if (rd_check_is_filtered(rd, "pid", pid))
continue;
if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])
/* discard const from mnl_attr_get_str */
comm = (char *)mnl_attr_get_str(
nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
if (rd->json_output)
jsonw_start_array(rd->jw);
print_dev(rd, idx, name);
if (nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY])
print_key(rd, "local_dma_lkey", local_dma_lkey);
print_users(rd, users);
if (nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY])
print_key(rd, "unsafe_global_rkey", unsafe_global_rkey);
print_pid(rd, pid);
print_comm(rd, comm, nla_line);
if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
free(comm);
if (rd->json_output)
jsonw_end_array(rd->jw);
else
pr_out("\n");
}
return MNL_CB_OK;
}
RES_FUNC(res_no_args, RDMA_NLDEV_CMD_RES_GET, NULL, true);
static const struct
@ -990,6 +1075,15 @@ struct filters mr_valid_filters[MAX_NUMBER_OF_FILTERS] = {
RES_FUNC(res_mr, RDMA_NLDEV_CMD_RES_MR_GET, mr_valid_filters, true);
static const
struct filters pd_valid_filters[MAX_NUMBER_OF_FILTERS] = {
{ .name = "dev", .is_number = false },
{ .name = "users", .is_number = true },
{ .name = "pid", .is_number = true }
};
RES_FUNC(res_pd, RDMA_NLDEV_CMD_RES_PD_GET, pd_valid_filters, true);
static int res_show(struct rd *rd)
{
const struct rd_cmd cmds[] = {
@ -998,6 +1092,7 @@ static int res_show(struct rd *rd)
{ "cm_id", res_cm_id },
{ "cq", res_cq },
{ "mr", res_mr },
{ "pd", res_pd },
{ 0 }
};