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Message-Id: <4f1876e2a31e9b6d0784131bda2140d421f25ffb.1522097991.git.swise@opengridcomputing.com>
Date: Mon, 26 Mar 2018 13:57:39 -0700
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 v3 iproute2-next 7/8] rdma: Add MR resource tracking
information
Sample output:
Without CAP_NET_ADMIN:
$ rdma resource show mr mrlen 65536
link mlx4_0/- mrlen 65536 pid 0 comm [nvme_rdma]
link cxgb4_0/- mrlen 65536 pid 0 comm [nvme_rdma]
With CAP_NET_ADMIN:
# rdma resource show mr mrlen 65536
link mlx4_0/- rkey 0x12702 lkey 0x12702 iova 0x85724a000 mrlen 65536 pid 0 comm [nvme_rdma]
link cxgb4_0/- rkey 0x68fe4e9 lkey 0x68fe4e9 iova 0x835b91000 mrlen 65536 pid 0 comm [nvme_rdma]
Signed-off-by: Steve Wise <swise@...ngridcomputing.com>
Reviewed-by: Leon Romanovsky <leonro@...lanox.com>
---
include/json_writer.h | 2 +
lib/json_writer.c | 11 +++++
rdma/res.c | 127 ++++++++++++++++++++++++++++++++++++++++++++++++++
rdma/utils.c | 6 +++
4 files changed, 146 insertions(+)
diff --git a/include/json_writer.h b/include/json_writer.h
index 45459fa..4b4dec2 100644
--- a/include/json_writer.h
+++ b/include/json_writer.h
@@ -35,6 +35,7 @@ void jsonw_bool(json_writer_t *self, bool value);
void jsonw_float(json_writer_t *self, double number);
void jsonw_float_fmt(json_writer_t *self, const char *fmt, double num);
void jsonw_uint(json_writer_t *self, uint64_t number);
+void jsonw_xint(json_writer_t *self, uint64_t number);
void jsonw_hu(json_writer_t *self, unsigned short number);
void jsonw_int(json_writer_t *self, int64_t number);
void jsonw_null(json_writer_t *self);
@@ -45,6 +46,7 @@ void jsonw_string_field(json_writer_t *self, const char *prop, const char *val);
void jsonw_bool_field(json_writer_t *self, const char *prop, bool value);
void jsonw_float_field(json_writer_t *self, const char *prop, double num);
void jsonw_uint_field(json_writer_t *self, const char *prop, uint64_t num);
+void jsonw_xint_field(json_writer_t *self, const char *prop, uint64_t num);
void jsonw_hu_field(json_writer_t *self, const char *prop, unsigned short num);
void jsonw_int_field(json_writer_t *self, const char *prop, int64_t num);
void jsonw_null_field(json_writer_t *self, const char *prop);
diff --git a/lib/json_writer.c b/lib/json_writer.c
index 68401ae..0ad0421 100644
--- a/lib/json_writer.c
+++ b/lib/json_writer.c
@@ -225,6 +225,11 @@ void jsonw_uint(json_writer_t *self, uint64_t num)
jsonw_printf(self, "%"PRIu64, num);
}
+void jsonw_xint(json_writer_t *self, uint64_t num)
+{
+ jsonw_printf(self, "%"PRIx64, num);
+}
+
void jsonw_lluint(json_writer_t *self, unsigned long long int num)
{
jsonw_printf(self, "%llu", num);
@@ -269,6 +274,12 @@ void jsonw_uint_field(json_writer_t *self, const char *prop, uint64_t num)
jsonw_uint(self, num);
}
+void jsonw_xint_field(json_writer_t *self, const char *prop, uint64_t num)
+{
+ jsonw_name(self, prop);
+ jsonw_xint(self, num);
+}
+
void jsonw_hu_field(json_writer_t *self, const char *prop, unsigned short num)
{
jsonw_name(self, prop);
diff --git a/rdma/res.c b/rdma/res.c
index f1a90d3..aa61e73 100644
--- a/rdma/res.c
+++ b/rdma/res.c
@@ -802,6 +802,121 @@ static int res_cq_parse_cb(const struct nlmsghdr *nlh, void *data)
return MNL_CB_OK;
}
+static void print_key(struct rd *rd, const char *name, uint32_t val)
+{
+ if (rd->json_output)
+ jsonw_xint_field(rd->jw, name, val);
+ else
+ pr_out("%s 0x%x ", name, val);
+}
+
+static void print_iova(struct rd *rd, uint64_t val)
+{
+ if (rd->json_output)
+ jsonw_xint_field(rd->jw, "iova", val);
+ else
+ pr_out("iova 0x%" PRIx64 " ", val);
+}
+
+static void print_mrlen(struct rd *rd, uint64_t val)
+{
+ if (rd->json_output)
+ jsonw_uint_field(rd->jw, "mrlen", val);
+ else
+ pr_out("mrlen %" PRIu64 " ", val);
+}
+
+static int res_mr_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_MR])
+ 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_MR];
+
+ mnl_attr_for_each_nested(nla_entry, nla_table) {
+ struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
+ uint32_t rkey = 0, lkey = 0;
+ uint64_t iova = 0, mrlen;
+ char *comm = NULL;
+ uint32_t pid = 0;
+ 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_MRLEN] ||
+ (!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_RKEY])
+ rkey = mnl_attr_get_u32(
+ nla_line[RDMA_NLDEV_ATTR_RES_RKEY]);
+ if (nla_line[RDMA_NLDEV_ATTR_RES_LKEY])
+ lkey = mnl_attr_get_u32(
+ nla_line[RDMA_NLDEV_ATTR_RES_LKEY]);
+ if (nla_line[RDMA_NLDEV_ATTR_RES_IOVA])
+ iova = mnl_attr_get_u64(
+ nla_line[RDMA_NLDEV_ATTR_RES_IOVA]);
+
+ mrlen = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_MRLEN]);
+ if (rd_check_is_filtered(rd, "mrlen", mrlen))
+ continue;
+
+ 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)) {
+ free(comm);
+ 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_RKEY])
+ print_key(rd, "rkey", rkey);
+ if (nla_line[RDMA_NLDEV_ATTR_RES_LKEY])
+ print_key(rd, "lkey", lkey);
+ if (nla_line[RDMA_NLDEV_ATTR_RES_IOVA])
+ print_iova(rd, iova);
+ print_mrlen(rd, mrlen);
+ 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
@@ -854,6 +969,17 @@ struct filters cq_valid_filters[MAX_NUMBER_OF_FILTERS] = {
RES_FUNC(res_cq, RDMA_NLDEV_CMD_RES_CQ_GET, cq_valid_filters, true);
+static const
+struct filters mr_valid_filters[MAX_NUMBER_OF_FILTERS] = {
+ { .name = "link", .is_number = false },
+ { .name = "rkey", .is_number = true },
+ { .name = "lkey", .is_number = true },
+ { .name = "mrlen", .is_number = true },
+ { .name = "pid", .is_number = true }
+};
+
+RES_FUNC(res_mr, RDMA_NLDEV_CMD_RES_MR_GET, mr_valid_filters, true);
+
static int res_show(struct rd *rd)
{
const struct rd_cmd cmds[] = {
@@ -861,6 +987,7 @@ static int res_show(struct rd *rd)
{ "qp", res_qp },
{ "cm_id", res_cm_id },
{ "cq", res_cq },
+ { "mr", res_mr },
{ 0 }
};
diff --git a/rdma/utils.c b/rdma/utils.c
index 5e79b62..a2e08e9 100644
--- a/rdma/utils.c
+++ b/rdma/utils.c
@@ -385,6 +385,12 @@ static const enum mnl_attr_data_type nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
[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,
+ [RDMA_NLDEV_ATTR_RES_MR] = MNL_TYPE_NESTED,
+ [RDMA_NLDEV_ATTR_RES_MR_ENTRY] = MNL_TYPE_NESTED,
+ [RDMA_NLDEV_ATTR_RES_RKEY] = MNL_TYPE_U32,
+ [RDMA_NLDEV_ATTR_RES_LKEY] = MNL_TYPE_U32,
+ [RDMA_NLDEV_ATTR_RES_IOVA] = MNL_TYPE_U64,
+ [RDMA_NLDEV_ATTR_RES_MRLEN] = MNL_TYPE_U64,
};
int rd_attr_cb(const struct nlattr *attr, void *data)
--
1.8.3.1
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