Merge branch 'devlink-move-reload-fail-indication-to-devlink-core-and-expose-to-user'

Jiri Pirko says:

====================
net: devlink: move reload fail indication to devlink core and expose to user

First two patches are dependencies of the last one. That moves devlink
reload failure indication to the devlink code, so the drivers do not
have to track it themselves. Currently it is only mlxsw, but I will send
a follow-up patchset that introduces this in netdevsim too.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 31 insertions, 4 deletions

diff --git a/net/core/devlink.c b/net/core/devlink.c
index 4a2fb94c44cf..e48680efe54a 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -471,6 +471,8 @@ static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
 
         if (devlink_nl_put_handle(msg, devlink))
                 goto nla_put_failure;
+        if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
+                goto nla_put_failure;
 
         genlmsg_end(msg, hdr);
         return 0;
@@ -2672,12 +2674,32 @@ devlink_resources_validate(struct devlink *devlink,
         return err;
 }
 
+static bool devlink_reload_supported(struct devlink *devlink)
+{
+        return devlink->ops->reload_down && devlink->ops->reload_up;
+}
+
+static void devlink_reload_failed_set(struct devlink *devlink,
+                                      bool reload_failed)
+{
+        if (devlink->reload_failed == reload_failed)
+                return;
+        devlink->reload_failed = reload_failed;
+        devlink_notify(devlink, DEVLINK_CMD_NEW);
+}
+
+bool devlink_is_reload_failed(const struct devlink *devlink)
+{
+        return devlink->reload_failed;
+}
+EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
+
 static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
 {
         struct devlink *devlink = info->user_ptr[0];
         int err;
 
-        if (!devlink->ops->reload)
+        if (!devlink_reload_supported(devlink))
                 return -EOPNOTSUPP;
 
         err = devlink_resources_validate(devlink, NULL, info);
@@ -2685,7 +2707,12 @@ static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
                 NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
                 return err;
         }
-        return devlink->ops->reload(devlink, info->extack);
+        err = devlink->ops->reload_down(devlink, info->extack);
+        if (err)
+                return err;
+        err = devlink->ops->reload_up(devlink, info->extack);
+        devlink_reload_failed_set(devlink, !!err);
+        return err;
 }
 
 static int devlink_nl_flash_update_fill(struct sk_buff *msg,
@@ -7150,7 +7177,7 @@ __devlink_param_driverinit_value_set(struct devlink *devlink,
 int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
                                        union devlink_param_value *init_val)
 {
-        if (!devlink->ops->reload)
+        if (!devlink_reload_supported(devlink))
                 return -EOPNOTSUPP;
 
         return __devlink_param_driverinit_value_get(&devlink->param_list,
@@ -7197,7 +7224,7 @@ int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
 {
         struct devlink *devlink = devlink_port->devlink;
 
-        if (!devlink->ops->reload)
+        if (!devlink_reload_supported(devlink))
                 return -EOPNOTSUPP;
 
         return __devlink_param_driverinit_value_get(&devlink_port->param_list,