devlink: Hold the instance lock in health callbacks

Let the core take the devlink instance lock around health callbacks and
remove the now redundant locking in the drivers.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/health.c b/drivers/net/ethernet/mellanox/mlx5/core/health.c
index 6e154b5..2cf2c99 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/health.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/health.c
@@ -622,14 +622,8 @@ mlx5_fw_fatal_reporter_recover(struct devlink_health_reporter *reporter,
                               struct netlink_ext_ack *extack)
 {
        struct mlx5_core_dev *dev = devlink_health_reporter_priv(reporter);
-       struct devlink *devlink = priv_to_devlink(dev);
-       int ret;
 
-       devl_lock(devlink);
-       ret = mlx5_health_try_recover(dev);
-       devl_unlock(devlink);
-
-       return ret;
+       return mlx5_health_try_recover(dev);
 }
 
 static int

diff --git a/net/core/devlink.c b/net/core/devlink.c
index 216f26b..c43c965 100644 (file)
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -7757,6 +7757,7 @@ int devlink_health_report(struct devlink_health_reporter *reporter,
        enum devlink_health_reporter_state prev_health_state;
        struct devlink *devlink = reporter->devlink;
        unsigned long recover_ts_threshold;
+       int ret;
 
        /* write a log message of the current error */
        WARN_ON(!msg);
@@ -7790,11 +7791,14 @@ int devlink_health_report(struct devlink_health_reporter *reporter,
                mutex_unlock(&reporter->dump_lock);
        }
 
-       if (reporter->auto_recover)
-               return devlink_health_reporter_recover(reporter,
-                                                      priv_ctx, NULL);
+       if (!reporter->auto_recover)
+               return 0;
 
-       return 0;
+       devl_lock(devlink);
+       ret = devlink_health_reporter_recover(reporter, priv_ctx, NULL);
+       devl_unlock(devlink);
+
+       return ret;
 }
 EXPORT_SYMBOL_GPL(devlink_health_report);
 
@@ -9469,8 +9473,7 @@ static const struct genl_small_ops devlink_nl_ops[] = {
                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
                .doit = devlink_nl_cmd_health_reporter_get_doit,
                .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
-               .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
-                                 DEVLINK_NL_FLAG_NO_LOCK,
+               .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
                /* can be retrieved by unprivileged users */
        },
        {
@@ -9478,24 +9481,21 @@ static const struct genl_small_ops devlink_nl_ops[] = {
                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
                .doit = devlink_nl_cmd_health_reporter_set_doit,
                .flags = GENL_ADMIN_PERM,
-               .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
-                                 DEVLINK_NL_FLAG_NO_LOCK,
+               .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
        },
        {
                .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
                .doit = devlink_nl_cmd_health_reporter_recover_doit,
                .flags = GENL_ADMIN_PERM,
-               .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
-                                 DEVLINK_NL_FLAG_NO_LOCK,
+               .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
        },
        {
                .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
                .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
                .flags = GENL_ADMIN_PERM,
-               .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
-                                 DEVLINK_NL_FLAG_NO_LOCK,
+               .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
        },
        {
                .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
@@ -9509,16 +9509,14 @@ static const struct genl_small_ops devlink_nl_ops[] = {
                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
                .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
                .flags = GENL_ADMIN_PERM,
-               .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
-                                 DEVLINK_NL_FLAG_NO_LOCK,
+               .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
        },
        {
                .cmd = DEVLINK_CMD_HEALTH_REPORTER_TEST,
                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
                .doit = devlink_nl_cmd_health_reporter_test_doit,
                .flags = GENL_ADMIN_PERM,
-               .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
-                                 DEVLINK_NL_FLAG_NO_LOCK,
+               .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
        },
        {
                .cmd = DEVLINK_CMD_FLASH_UPDATE,