From: Leon Romanovsky <leonro@xxxxxxxxxxxx>
Add link object interface together with port capability parsing command
$ rdma link
1/1: mlx5_0/1: caps 0x20
2/1: mlx5_1/1: caps 0x20
3/1: mlx5_2/1: caps 0x20
4/1: mlx5_3/1: caps 0x4010000
5/1: mlx5_4/1: caps 0x20
$ rdma link show mlx5_4
5/1: mlx5_4/1: caps 0x20
$ rdma link show mlx5_3 caps
4/1: mlx5_3/1: caps 0x4010000
Bit Description
------------------------------------------
16 PORT_CM
26 PORT_IP_BASED_GIDS
$ rdma link show mlx5_4/1 caps
5/1: mlx5_4/1: caps 0x20
Bit Description
------------------------------------------
05 PORT_AUTO_MIGR
$ rdma link show mlx5_4/1 caps_flags
Unknown parameter 'caps_flags'
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
---
rdma/Makefile | 2 +-
rdma/link.c | 201 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
rdma/rdma.c | 1 +
rdma/rdma.h | 4 ++
rdma/utils.c | 9 +++
5 files changed, 216 insertions(+), 1 deletion(-)
create mode 100644 rdma/link.c
diff --git a/rdma/Makefile b/rdma/Makefile
index 123d7ac5..1a9e4b1a 100644
--- a/rdma/Makefile
+++ b/rdma/Makefile
@@ -2,7 +2,7 @@ include ../Config
ifeq ($(HAVE_MNL),y)
-RDMA_OBJ = rdma.o utils.o dev.o
+RDMA_OBJ = rdma.o utils.o dev.o link.o
TARGETS=rdma
CFLAGS += $(shell $(PKG_CONFIG) libmnl --cflags)
diff --git a/rdma/link.c b/rdma/link.c
new file mode 100644
index 00000000..3d697205
--- /dev/null
+++ b/rdma/link.c
@@ -0,0 +1,201 @@
+/*
+ * link.c RDMA tool
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Authors: Leon Romanovsky <leonro@xxxxxxxxxxxx>
+ */
+
+#include "rdma.h"
+
+static int link_help(struct rdma *rd)
+{
+ pr_out("Usage: %s link show [DEV/PORT_INDEX]\n", rd->filename);
+ pr_out(" %s link show DEV/PORT_INDEX caps\n", rd->filename);
+ return 0;
+}
+
+static const char *link_caps[64] = {
+ "UNKNOWN",
+ "PORT_SM",
+ "PORT_NOTICE",
+ "PORT_TRAP",
+ "PORT_OPT_IPD",
+ "PORT_AUTO_MIGR",
+ "PORT_SL_MAP",
+ "PORT_MKEY_NVRAM",
+ "PORT_PKEY_NVRAM",
+ "PORT_LED_INFO",
+ "PORT_SM_DISABLED",
+ "PORT_SYS_IMAGE_GUID",
+ "PORT_PKEY_SW_EXT_PORT_TRAP",
+ "UNKNOWN",
+ "PORT_EXTENDED_SPEEDS",
+ "UNKNOWN",
+ "PORT_CM",
+ "PORT_SNMP_TUNNEL",
+ "PORT_REINIT",
+ "PORT_DEVICE_MGMT",
+ "PORT_VENDOR_CLASS",
+ "PORT_DR_NOTICE",
+ "PORT_CAP_MASK_NOTICE",
+ "PORT_BOOT_MGMT",
+ "PORT_LINK_LATENCY",
+ "PORT_CLIENT_REG",
+ "PORT_IP_BASED_GIDS",
+};
+
+static int link_print_caps(struct rdma *rd)
+{
+ struct port_map *port_map = rd->port_map_curr;
+ struct dev_map *dev_map = rd->dev_map_curr;
+ uint64_t caps = port_map->caps;
+ uint32_t idx;
+
+ pr_out("%u/%u: %s/%u: ", dev_map->idx, port_map->idx, dev_map->dev_name, port_map->idx);
+ pr_out("caps 0x%" PRIx64 "\n", port_map->caps);
+ pr_out("Bit\tDescription\n");
+ pr_out("------------------------------------------\n");
+ for (idx = 0; idx < 64; idx++) {
+ if (caps & 0x1)
+ pr_out(" %02u\t%s\n", idx, link_caps[idx]?link_caps[idx]:"UNKNONW");
+ caps >>= 0x1;
+ }
+ return 0;
+}
+
+static int link_no_args(struct rdma *rd)
+{
+ struct port_map *port_map = rd->port_map_curr;
+ struct dev_map *dev_map = rd->dev_map_curr;
+
+ pr_out("%u/%u: %s/%u: ", dev_map->idx, port_map->idx, dev_map->dev_name, port_map->idx);
+ pr_out("caps 0x%" PRIx64 "\n", port_map->caps);
+ return 0;
+}
+
+static int link_one_show(struct rdma *rd)
+{
+ const struct rdma_cmd cmds[] = {
+ { NULL, link_no_args},
+ { "caps", link_print_caps},
+ { 0 }
+ };
+
+ return rdma_exec_cmd(rd, cmds, "parameter");
+
+}
+
+static int port_init_cb(const struct nlmsghdr *nlh, void *data)
+{
+ struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
+ struct port_map *port_map;
+ struct dev_map *dev_map;
+ struct rdma *rd = data;
+ uint32_t port_idx;
+ uint32_t caps;
+
+ mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
+ if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME])
+ return MNL_CB_ERROR;
+ if (!tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
+ pr_err("This tool doesn't support switches yet\n");
+ return MNL_CB_ERROR;
+ }
+
+ dev_map = rd->dev_map_curr;
+
+ port_idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
+ caps = mnl_attr_get_u64(tb[RDMA_NLDEV_ATTR_CAP_FLAGS]);
+
+ list_for_each_entry(port_map, &dev_map->port_map_list, list) {
+ if (port_map->idx != port_idx)
+ continue;
+
+ port_map->caps = caps;
+ }
+
+ return MNL_CB_OK;
+}
+
+
+static int fill_port_map(struct rdma *rd)
+{
+ uint32_t seq;
+ int ret;
+
+ rdma_prepare_msg(rd, RDMA_NLDEV_CMD_PORT_GET, &seq, (NLM_F_REQUEST | NLM_F_ACK | NLM_F_DUMP));
+ mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_ATTR_DEV_INDEX, rd->dev_map_curr->idx);
+ if ((ret = rdma_send_msg(rd)))
+ return ret;
+
+ return rdma_recv_msg(rd, port_init_cb, rd, seq);
+}
+
+static int link_show(struct rdma *rd)
+{
+ struct port_map *port_map;
+ struct dev_map *dev_map;
+ int ret = 0;
+
+ if (rd_no_arg(rd)) {
+ list_for_each_entry(dev_map, &rd->dev_map_list, list) {
+ rd->dev_map_curr = dev_map;
+ ret = fill_port_map(rd);
+ if (ret)
+ return ret;
+
+ list_for_each_entry(port_map, &dev_map->port_map_list, list) {
+ rd->port_map_curr = port_map;
+ ret = link_one_show(rd);
+ if (ret)
+ return ret;
+ }
+ }
+
+ }
+ else {
+ uint32_t port;
+ rd->dev_map_curr = dev_map_lookup(rd, true);
+ port = get_port_from_argv(rd);
+ if (!rd->dev_map_curr || port > rd->dev_map_curr->num_ports) {
+ pr_err("Wrong device name\n");
+ return -ENOENT;
+ }
+ rd_arg_inc(rd);
+
+ ret = fill_port_map(rd);
+ if (ret)
+ return ret;
+
+ list_for_each_entry(port_map, &rd->dev_map_curr->port_map_list, list) {
+ rd->port_map_curr = port_map;
+ if (port && port_map->idx != port)
+ continue;
+
+ if (!port || port_map->idx == port) {
+ ret = link_one_show(rd);
+ if (ret)
+ return ret;
+ }
+ }
+
+ }
+ return ret;
+}
+
+int cmd_link(struct rdma *rd)
+{
+ const struct rdma_cmd cmds[] = {
+ { NULL, link_show },
+ { "show", link_show },
+ { "list", link_show },
+ { "help", link_help },
+ { 0 }
+ };
+
+ return rdma_exec_cmd(rd, cmds, "link command");
+}
diff --git a/rdma/rdma.c b/rdma/rdma.c
index f904532c..ec6c2edb 100644
--- a/rdma/rdma.c
+++ b/rdma/rdma.c
@@ -34,6 +34,7 @@ static int rd_cmd(struct rdma *rd)
{ NULL, cmd_help },
{ "help", cmd_help },
{ "dev", cmd_dev },
+ { "link", cmd_link },
{ 0 }
};
diff --git a/rdma/rdma.h b/rdma/rdma.h
index 8cca0f28..553a4fc2 100644
--- a/rdma/rdma.h
+++ b/rdma/rdma.h
@@ -26,6 +26,7 @@
struct port_map {
struct list_head list;
uint32_t idx;
+ uint64_t caps;
};
struct dev_map {
@@ -43,6 +44,7 @@ struct rdma {
char *filename;
struct list_head dev_map_list;
struct dev_map *dev_map_curr;
+ struct port_map *port_map_curr;
struct mnl_socket *nl;
struct nlmsghdr *nlh;
char *buff;
@@ -60,11 +62,13 @@ bool rd_no_arg(struct rdma *rd);
bool rd_argv_match(struct rdma *rd, const char *pattern);
void rd_arg_inc(struct rdma *rd);
char *rd_argv(struct rdma *rd);
+uint32_t get_port_from_argv(struct rdma *rd);
/*
* Commands interface
*/
int cmd_dev(struct rdma *rd);
+int cmd_link(struct rdma *rd);
int rdma_exec_cmd(struct rdma *rd, const struct rdma_cmd *c, const char *str);
/*
diff --git a/rdma/utils.c b/rdma/utils.c
index e7f257e3..204d4c4e 100644
--- a/rdma/utils.c
+++ b/rdma/utils.c
@@ -62,6 +62,15 @@ bool rd_no_arg(struct rdma *rd)
return rd_argc(rd) == 0;
}
+uint32_t get_port_from_argv(struct rdma *rd)
+{
+ char *slash;
+
+ slash = strchr(rd_argv(rd), '/');
+ /* if no port found, return 0 */
+ return (slash) ? (atoi(slash + 1)):0;
+}
+
static struct dev_map *dev_map_alloc(const char *dev_name)
{
struct dev_map *dev_map;
--
2.13.1
--
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