From: Xiao Liang <shaw.leon(a)gmail.com>
Date: Wed, 19 Feb 2025 20:50:32 +0800
When link_net is set, use it as link netns instead of
dev_net(). This
prepares for rtnetlink core to create device in target netns directly,
in which case the two namespaces may be different.
Convert common ip_tunnel_newlink() to accept an extra link netns
argument.
Signed-off-by: Xiao Liang <shaw.leon(a)gmail.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu(a)amazon.com>