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Message-Id: <c3c9c2facd32c549e9f9742d7dbaafd9dd68c83f.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 5/5] rdma: Add PD resource tracking
information
Sample output:
# rdma resource show pd
link cxgb4_0/- local_dma_lkey 0x0 usecnt 4 flags 0x0 pid 30503 comm rping
link cxgb4_0/- local_dma_lkey 0x0 usecnt 0 flags 0x0 pid 30488 comm rping
link cxgb4_0/- local_dma_lkey 0x0 usecnt 5 flags 0x0 pid 30498 comm rping
link cxgb4_0/- local_dma_lkey 0x0 usecnt 0 flags 0x0 pid 30501 comm rping
link cxgb4_0/- local_dma_lkey 0x0 usecnt 0 flags 0x0 pid 0 comm [ib_srp]
link mlx4_0/- local_dma_lkey 0x0 usecnt 4 flags 0x0 pid 30494 comm rping
link mlx4_0/- local_dma_lkey 0x0 usecnt 0 flags 0x0 pid 30488 comm rping
link mlx4_0/- local_dma_lkey 0x0 usecnt 5 flags 0x0 pid 30489 comm rping
link mlx4_0/- local_dma_lkey 0x0 usecnt 0 flags 0x0 pid 30492 comm rping
link mlx4_0/- local_dma_lkey 0x8000 usecnt 0 flags 0x0 pid 0 comm [ib_srpt]
link mlx4_0/- local_dma_lkey 0x8000 usecnt 0 flags 0x0 pid 0 comm [ib_srp]
link mlx4_0/- local_dma_lkey 0x8000 usecnt 1 flags 0x0 pid 0 comm [ib_core]
Signed-off-by: Steve Wise <swise@...ngridcomputing.com>
---
rdma/res.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 96 insertions(+)
diff --git a/rdma/res.c b/rdma/res.c
index 2b67d25..5e6bc42 100644
--- a/rdma/res.c
+++ b/rdma/res.c
@@ -932,6 +932,93 @@ static int res_mr_parse_cb(const struct nlmsghdr *nlh, void *data)
return MNL_CB_OK;
}
+static void print_flags(struct rd *rd, uint32_t val)
+{
+ if (rd->json_output)
+ jsonw_xint_field(rd->jw, "flags", val);
+ else
+ pr_out("flags 0x%x ", val);
+}
+
+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) {
+ struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
+ uint32_t local_dma_lkey, unsafe_global_rkey = 0;
+ uint32_t flags, pid = 0;
+ char *comm = NULL;
+ uint64_t usecnt;
+ 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_LOCAL_DMA_LKEY] ||
+ !nla_line[RDMA_NLDEV_ATTR_RES_USECNT] ||
+ !nla_line[RDMA_NLDEV_ATTR_RES_PD_FLAGS] ||
+ (!nla_line[RDMA_NLDEV_ATTR_RES_PID] &&
+ !nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])) {
+ return MNL_CB_ERROR;
+ }
+
+ local_dma_lkey = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY]);
+ usecnt = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
+ flags = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PD_FLAGS]);
+ 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);
+ print_key(rd, "local_dma_lkey", local_dma_lkey);
+ print_usecnt(rd, usecnt);
+ print_flags(rd, flags);
+ 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
@@ -1005,6 +1092,14 @@ 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 = "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[] = {
@@ -1013,6 +1108,7 @@ 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
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