From: Jiri Pirko Date: Mon, 13 Feb 2023 11:58:36 +0000 (+0100) Subject: devlink: don't allow to change net namespace for FW_ACTIVATE reload action X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=2edd92570441dd33246210042dc167319a5cf7e3;p=linux.git devlink: don't allow to change net namespace for FW_ACTIVATE reload action The change on network namespace only makes sense during re-init reload action. For FW activation it is not applicable. So check if user passed an ATTR indicating network namespace change request and forbid it. Signed-off-by: Jiri Pirko Acked-by: Jakub Kicinski Link: https://lore.kernel.org/r/20230213115836.3404039-1-jiri@resnulli.us Signed-off-by: Paolo Abeni --- diff --git a/net/devlink/dev.c b/net/devlink/dev.c index ab4e0f3c4e3d7..b40153fa26800 100644 --- a/net/devlink/dev.c +++ b/net/devlink/dev.c @@ -476,6 +476,12 @@ int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info) dest_net = devlink_netns_get(skb, info); if (IS_ERR(dest_net)) return PTR_ERR(dest_net); + if (!net_eq(dest_net, devlink_net(devlink)) && + action != DEVLINK_RELOAD_ACTION_DRIVER_REINIT) { + NL_SET_ERR_MSG_MOD(info->extack, + "Changing namespace is only supported for reinit action"); + return -EOPNOTSUPP; + } } err = devlink_reload(devlink, dest_net, action, limit, &actions_performed, info->extack);