Sample output: Without CAP_NET_ADMIN capability:
link mlx4_0/- users 0 pid 0 comm [ib_srpt] link mlx4_0/- users 0 pid 0 comm [ib_srp] link mlx4_0/- users 1 pid 0 comm [ib_core] link cxgb4_0/- users 0 pid 0 comm [ib_srp] With CAP_NET_ADMIN capability: link mlx4_0/- local_dma_lkey 0x8000 users 0 pid 0 comm [ib_srpt] link mlx4_0/- local_dma_lkey 0x8000 users 0 pid 0 comm [ib_srp] link mlx4_0/- local_dma_lkey 0x8000 users 1 pid 0 comm [ib_core] link cxgb4_0/- local_dma_lkey 0x0 users 0 pid 0 comm [ib_srp] Signed-off-by: Steve Wise <sw...@opengridcomputing.com> --- rdma/res.c | 92 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 92 insertions(+) diff --git a/rdma/res.c b/rdma/res.c index 4caf1d0..435e1ad 100644 --- a/rdma/res.c +++ b/rdma/res.c @@ -892,6 +892,87 @@ 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_link(rd, idx, name, 0, nla_line); + 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 @@ -971,6 +1052,16 @@ filters mr_valid_filters[MAX_NUMBER_OF_FILTERS] = {{ .name = "link", 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 = "link", + .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[] = { @@ -979,6 +1070,7 @@ static int res_show(struct rd *rd) { "cm_id", res_cm_id }, { "cq", res_cq }, { "mr", res_mr }, + { "pd", res_pd }, { 0 } }; -- 1.8.3.1