Commit 12bd0dce authored by Eran Ben Elisha's avatar Eran Ben Elisha Committed by David S. Miller

devlink: Add health dump {get,clear} commands

Add devlink health dump commands, in order to run an dump operation
over a specific reporter.

The supported operations are dump_get in order to get last saved
dump (if not exist, dump now) and dump_clear to clear last saved
dump.

It is expected from driver's callback for diagnose command to fill it
via the buffer descriptors API. Devlink will parse it and convert it to
netlink nla API in order to pass it to the user.
Signed-off-by: default avatarEran Ben Elisha <eranbe@mellanox.com>
Reviewed-by: default avatarMoshe Shemesh <moshe@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8a66704a
...@@ -93,6 +93,8 @@ enum devlink_command { ...@@ -93,6 +93,8 @@ enum devlink_command {
DEVLINK_CMD_HEALTH_REPORTER_SET, DEVLINK_CMD_HEALTH_REPORTER_SET,
DEVLINK_CMD_HEALTH_REPORTER_RECOVER, DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
/* add new commands above here */ /* add new commands above here */
__DEVLINK_CMD_MAX, __DEVLINK_CMD_MAX,
......
...@@ -4544,6 +4544,65 @@ static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb, ...@@ -4544,6 +4544,65 @@ static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
return err; return err;
} }
static void
devlink_health_dump_clear(struct devlink_health_reporter *reporter)
{
reporter->dump_avail = false;
reporter->dump_ts = 0;
devlink_health_buffers_reset(reporter->dump_buffers_array,
DEVLINK_HEALTH_SIZE_TO_BUFFERS(reporter->ops->dump_size));
}
static int devlink_nl_cmd_health_reporter_dump_get_doit(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
struct devlink_health_reporter *reporter;
u64 num_of_buffers;
int err;
reporter = devlink_health_reporter_get_from_info(devlink, info);
if (!reporter)
return -EINVAL;
if (!reporter->ops->dump)
return -EOPNOTSUPP;
num_of_buffers =
DEVLINK_HEALTH_SIZE_TO_BUFFERS(reporter->ops->dump_size);
mutex_lock(&reporter->dump_lock);
err = devlink_health_do_dump(reporter, NULL);
if (err)
goto out;
err = devlink_health_buffer_snd(info,
DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
0, reporter->dump_buffers_array,
num_of_buffers);
out:
mutex_unlock(&reporter->dump_lock);
return err;
}
static int
devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
struct devlink_health_reporter *reporter;
reporter = devlink_health_reporter_get_from_info(devlink, info);
if (!reporter)
return -EINVAL;
mutex_lock(&reporter->dump_lock);
devlink_health_dump_clear(reporter);
mutex_unlock(&reporter->dump_lock);
return 0;
}
static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = { static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
[DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING }, [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
[DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING }, [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
...@@ -4821,6 +4880,22 @@ static const struct genl_ops devlink_nl_ops[] = { ...@@ -4821,6 +4880,22 @@ static const struct genl_ops devlink_nl_ops[] = {
.flags = GENL_ADMIN_PERM, .flags = GENL_ADMIN_PERM,
.internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
}, },
{
.cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
.doit = devlink_nl_cmd_health_reporter_dump_get_doit,
.policy = devlink_nl_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
DEVLINK_NL_FLAG_NO_LOCK,
},
{
.cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
.doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
.policy = devlink_nl_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
DEVLINK_NL_FLAG_NO_LOCK,
},
}; };
static struct genl_family devlink_nl_family __ro_after_init = { static struct genl_family devlink_nl_family __ro_after_init = {
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment