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Message-Id: <a61b42e445d3936b32fe6ea7e4d101a31a7c5ca4.1519071002.git.swise@opengridcomputing.com>
Date: Wed, 14 Feb 2018 13:07:01 -0800
From: Steve Wise <swise@...ngridcomputing.com>
To: dsahern@...il.com
Cc: leon@...nel.org, stephen@...workplumber.org,
netdev@...r.kernel.org, linux-rdma@...r.kernel.org
Subject: [PATCH RFC iproute-next 3/5] rdma: Add CQ resource tracking
information
Sample output:
# rdma resource show cq
link cxgb4_0/- cqe 46 usecnt 2 pid 30503 comm rping
link cxgb4_0/- cqe 46 usecnt 2 pid 30498 comm rping
link mlx4_0/- cqe 63 usecnt 2 pid 30494 comm rping
link mlx4_0/- cqe 63 usecnt 2 pid 30489 comm rping
link mlx4_0/- cqe 1023 usecnt 2 poll_ctx WORKQUEUE pid 0 comm [ib_core]
# rdma resource show cq pid 30489
link mlx4_0/- cqe 63 usecnt 2 pid 30489 comm rping
Signed-off-by: Steve Wise <swise@...ngridcomputing.com>
---
rdma/res.c | 123 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
rdma/utils.c | 5 +++
2 files changed, 128 insertions(+)
diff --git a/rdma/res.c b/rdma/res.c
index beae7dc..27c1efd 100644
--- a/rdma/res.c
+++ b/rdma/res.c
@@ -21,6 +21,8 @@ static int res_help(struct rd *rd)
pr_out(" resource show qp link [DEV/PORT] [FILTER-NAME FILTER-VALUE]\n");
pr_out(" resource show cm_id link [DEV/PORT]\n");
pr_out(" resource show cm_id link [DEV/PORT] [FILTER-NAME FILTER-VALUE]\n");
+ pr_out(" resource show cq link [DEV/PORT]\n");
+ pr_out(" resource show cq link [DEV/PORT] [FILTER-NAME FILTER-VALUE]\n");
return 0;
}
@@ -705,6 +707,118 @@ static int res_cm_id_parse_cb(const struct nlmsghdr *nlh, void *data)
return MNL_CB_OK;
}
+static void print_cqe(struct rd *rd, uint32_t val)
+{
+ if (rd->json_output)
+ jsonw_uint_field(rd->jw, "cqe", val);
+ else
+ pr_out("cqe %u ", val);
+}
+
+static void print_usecnt(struct rd *rd, uint64_t val)
+{
+ if (rd->json_output)
+ jsonw_uint_field(rd->jw, "usecnt", val);
+ else
+ pr_out("usecnt %" PRIu64 " ", val);
+}
+
+static const char *poll_ctx_to_str(uint8_t idx)
+{
+ static const char * const cm_id_states_str[] = { "DIRECT", "SOFTIRQ",
+ "WORKQUEUE"};
+
+ if (idx < ARRAY_SIZE(cm_id_states_str))
+ return cm_id_states_str[idx];
+ return "UNKNOWN";
+}
+
+static void print_poll_ctx(struct rd *rd, uint8_t poll_ctx)
+{
+ if (rd->json_output) {
+ jsonw_string_field(rd->jw, "poll_ctx", poll_ctx_to_str(poll_ctx));
+ return;
+ }
+ pr_out("poll_ctx %s ", poll_ctx_to_str(poll_ctx));
+}
+
+static int res_cq_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_CQ])
+ 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_CQ];
+
+ mnl_attr_for_each_nested(nla_entry, nla_table) {
+ struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
+ char *comm = NULL;
+ uint32_t pid = 0;
+ uint8_t poll_ctx = 0;
+ uint64_t usecnt;
+ uint32_t cqe;
+ 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_CQE] ||
+ !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;
+ }
+
+ cqe = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_CQE]);
+ usecnt = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
+ if (nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX])
+ poll_ctx = mnl_attr_get_u8(nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX]);
+
+ 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);
+ print_cqe(rd, cqe);
+ print_usecnt(rd, usecnt);
+ if (nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX])
+ print_poll_ctx(rd, poll_ctx);
+ 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
@@ -758,12 +872,21 @@ filters cm_id_valid_filters[MAX_NUMBER_OF_FILTERS] = {{ .name = "link",
RES_FUNC(res_cm_id, RDMA_NLDEV_CMD_RES_CM_ID_GET, cm_id_valid_filters,
false);
+static const struct
+filters cq_valid_filters[MAX_NUMBER_OF_FILTERS] = {{ .name = "link",
+ .is_number = false },
+ { .name = "pid",
+ .is_number = true }};
+
+RES_FUNC(res_cq, RDMA_NLDEV_CMD_RES_CQ_GET, cq_valid_filters, true);
+
static int res_show(struct rd *rd)
{
const struct rd_cmd cmds[] = {
{ NULL, res_no_args },
{ "qp", res_qp },
{ "cm_id", res_cm_id },
+ { "cq", res_cq },
{ 0 }
};
diff --git a/rdma/utils.c b/rdma/utils.c
index 906ca73..11b34fe 100644
--- a/rdma/utils.c
+++ b/rdma/utils.c
@@ -387,6 +387,11 @@ static const enum mnl_attr_data_type nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
[RDMA_NLDEV_ATTR_RES_DEV_TYPE] = MNL_TYPE_U8,
[RDMA_NLDEV_ATTR_RES_TRANSPORT_TYPE] = MNL_TYPE_U8,
[RDMA_NLDEV_ATTR_RES_NETWORK_TYPE] = MNL_TYPE_U8,
+ [RDMA_NLDEV_ATTR_RES_CQ] = MNL_TYPE_NESTED,
+ [RDMA_NLDEV_ATTR_RES_CQ_ENTRY] = MNL_TYPE_NESTED,
+ [RDMA_NLDEV_ATTR_RES_CQE] = MNL_TYPE_U32,
+ [RDMA_NLDEV_ATTR_RES_USECNT] = MNL_TYPE_U64,
+ [RDMA_NLDEV_ATTR_RES_POLL_CTX] = MNL_TYPE_U8,
};
int rd_attr_cb(const struct nlattr *attr, void *data)
--
1.8.3.1
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