gtp: do not confirm neighbor when do pmtu update
authorHangbin Liu <liuhangbin@gmail.com>
Sun, 22 Dec 2019 02:51:11 +0000 (10:51 +0800)
committerDavid S. Miller <davem@davemloft.net>
Wed, 25 Dec 2019 06:28:54 +0000 (22:28 -0800)
commit6e9105c73f8d2163d12d5dfd762fd75483ed30f5
tree3b79c93d5aee04ce773a6f3d4e47aa4027287131
parent675d76ad0ad5bf41c9a129772ef0aba8f57ea9a7
gtp: do not confirm neighbor when do pmtu update

When do IPv6 tunnel PMTU update and calls __ip6_rt_update_pmtu() in the end,
we should not call dst_confirm_neigh() as there is no two-way communication.

Although GTP only support ipv4 right now, and __ip_rt_update_pmtu() does not
call dst_confirm_neigh(), we still set it to false to keep consistency with
IPv6 code.

v5: No change.
v4: No change.
v3: Do not remove dst_confirm_neigh, but add a new bool parameter in
    dst_ops.update_pmtu to control whether we should do neighbor confirm.
    Also split the big patch to small ones for each area.
v2: Remove dst_confirm_neigh in __ip6_rt_update_pmtu.

Reviewed-by: Guillaume Nault <gnault@redhat.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/gtp.c