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rdma: Control CQ adaptive moderation (DIM) 

In order to set adaptive-moderation for an ib device the command is:
rdma dev set [DEV] adaptive-moderation [on|off]

rdma dev show -d
0: mlx5_0: node_type ca fw 16.25.0319 node_guid 248a:0703:00a5:29d0
sys_image_guid 248a:0703:00a5:29d0 adaptive-moderation on
caps: <BAD_PKEY_CNTR, BAD_QKEY_CNTR, AUTO_PATH_MIG, CHANGE_PHY_PORT,
PORT_ACTIVE_EVENT, SYS_IMAGE_GUID, RC_RNR_NAK_GEN, MEM_WINDOW, XRC,
MEM_MGT_EXTENSIONS, BLOCK_MULTICAST_LOOPBACK, MEM_WINDOW_TYPE_2B,
RAW_IP_CSUM, CROSS_CHANNEL, MANAGED_FLOW_STEERING, SIGNATURE_HANDOVER,
ON_DEMAND_PAGING, SG_GAPS_REG, RAW_SCATTER_FCS, PCI_WRITE_END_PADDING>

rdma resource show cq
dev mlx5_0 cqn 0 cqe 1023 users 4 poll-ctx UNBOUND_WORKQUEUE
adaptive-moderation off comm [ib_core]

Signed-off-by: Yamin Friedman <yaminf@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
This commit is contained in:
Yamin Friedman 2019-07-29 10:42:25 +03:00 committed by Stephen Hemminger
parent 067925e2e1
commit 8a56ef325c
4 changed files with 76 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
rdma/dev.c
View File

@ -12,6 +12,7 @@ static int dev_help(struct rd *rd)
pr_out("Usage: %s dev show [DEV]\n", rd->filename);
pr_out(" %s dev set [DEV] name DEVNAME\n", rd->filename);
pr_out(" %s dev set [DEV] netns NSNAME\n", rd->filename);
pr_out(" %s dev set [DEV] adaptive-moderation [on|off]\n", rd->filename);
return 0;
}
@ -167,6 +168,21 @@ static void dev_print_sys_image_guid(struct rd *rd, struct nlattr **tb)
pr_out("sys_image_guid %s ", str);
}
static void dev_print_dim_setting(struct rd *rd, struct nlattr **tb)
{
uint8_t dim_setting;
if (!tb[RDMA_NLDEV_ATTR_DEV_DIM])
return;
dim_setting = mnl_attr_get_u8(tb[RDMA_NLDEV_ATTR_DEV_DIM]);
if (dim_setting > 1)
return;
print_on_off(rd, "adaptive-moderation", dim_setting);
}
static const char *node_type_to_str(uint8_t node_type)
{
static const char * const node_type_str[] = { "unknown", "ca",
@ -219,8 +235,10 @@ static int dev_parse_cb(const struct nlmsghdr *nlh, void *data)
dev_print_fw(rd, tb);
dev_print_node_guid(rd, tb);
dev_print_sys_image_guid(rd, tb);
if (rd->show_details)
if (rd->show_details) {
dev_print_dim_setting(rd, tb);
dev_print_caps(rd, tb);
}
if (!rd->json_output)
pr_out("\n");
@ -308,12 +326,47 @@ done:
return ret;
}
static int dev_set_dim_sendmsg(struct rd *rd, uint8_t dim_setting)
{
uint32_t seq;
rd_prepare_msg(rd, RDMA_NLDEV_CMD_SET, &seq,
(NLM_F_REQUEST | NLM_F_ACK));
mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_ATTR_DEV_INDEX, rd->dev_idx);
mnl_attr_put_u8(rd->nlh, RDMA_NLDEV_ATTR_DEV_DIM, dim_setting);
return rd_sendrecv_msg(rd, seq);
}
static int dev_set_dim_off(struct rd *rd)
{
return dev_set_dim_sendmsg(rd, 0);
}
static int dev_set_dim_on(struct rd *rd)
{
return dev_set_dim_sendmsg(rd, 1);
}
static int dev_set_dim(struct rd *rd)
{
const struct rd_cmd cmds[] = {
{ NULL, dev_help},
{ "on", dev_set_dim_on},
{ "off", dev_set_dim_off},
{ 0 }
};
return rd_exec_cmd(rd, cmds, "parameter");
}
static int dev_one_set(struct rd *rd)
{
const struct rd_cmd cmds[] = {
{ NULL, dev_help},
{ "name", dev_set_name},
{ "netns", dev_set_netns},
{ "adaptive-moderation", dev_set_dim},
{ 0 }
};

1
rdma/rdma.h
View File

@ -136,6 +136,7 @@ int rd_attr_check(const struct nlattr *attr, int *typep);
void print_driver_table(struct rd *rd, struct nlattr *tb);
void newline(struct rd *rd);
void newline_indent(struct rd *rd);
void print_on_off(struct rd *rd, const char *key_str, bool on);
#define MAX_LINE_LENGTH 80
#endif /* _RDMA_TOOL_H_ */

15
rdma/res-cq.c
View File

@ -30,6 +30,20 @@ static void print_poll_ctx(struct rd *rd, uint8_t poll_ctx, struct nlattr *attr)
pr_out("poll-ctx %s ", poll_ctx_to_str(poll_ctx));
}
static void print_cq_dim_setting(struct rd *rd, struct nlattr *attr)
{
uint8_t dim_setting;
if (!attr)
return;
dim_setting = mnl_attr_get_u8(attr);
if (dim_setting > 1)
return;
print_on_off(rd, "adaptive-moderation", dim_setting);
}
static int res_cq_line(struct rd *rd, const char *name, int idx,
struct nlattr **nla_line)
{
@ -97,6 +111,7 @@ static int res_cq_line(struct rd *rd, const char *name, int idx,
res_print_uint(rd, "users", users,
nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
print_poll_ctx(rd, poll_ctx, nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX]);
print_cq_dim_setting(rd, nla_line[RDMA_NLDEV_ATTR_DEV_DIM]);
res_print_uint(rd, "ctxn", ctxn, nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
res_print_uint(rd, "pid", pid, nla_line[RDMA_NLDEV_ATTR_RES_PID]);
print_comm(rd, comm, nla_line);

6
rdma/utils.c
View File

@ -449,6 +449,7 @@ static const enum mnl_attr_data_type nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
[RDMA_NLDEV_ATTR_STAT_MODE] = MNL_TYPE_U32,
[RDMA_NLDEV_ATTR_STAT_RES] = MNL_TYPE_U32,
[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK] = MNL_TYPE_U32,
[RDMA_NLDEV_ATTR_DEV_DIM] = MNL_TYPE_U8,
};
int rd_attr_check(const struct nlattr *attr, int *typep)
@ -789,6 +790,11 @@ static int print_driver_string(struct rd *rd, const char *key_str,
}
}
void print_on_off(struct rd *rd, const char *key_str, bool on)
{
print_driver_string(rd, key_str, (on) ? "on":"off");
}
static int print_driver_s32(struct rd *rd, const char *key_str, int32_t val,
enum rdma_nldev_print_type print_type)
{