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authorHangbin Liu <liuhangbin@gmail.com>2019-12-22 05:51:11 +0300
committerDavid S. Miller <davem@davemloft.net>2019-12-25 09:28:54 +0300
commit6e9105c73f8d2163d12d5dfd762fd75483ed30f5 (patch)
tree3b79c93d5aee04ce773a6f3d4e47aa4027287131 /drivers/net/gtp.c
parent675d76ad0ad5bf41c9a129772ef0aba8f57ea9a7 (diff)
downloadlinux-6e9105c73f8d2163d12d5dfd762fd75483ed30f5.tar.xz
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>
Diffstat (limited to 'drivers/net/gtp.c')
-rw-r--r--drivers/net/gtp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c
index 913062017be9..fca471e27f39 100644
--- a/drivers/net/gtp.c
+++ b/drivers/net/gtp.c
@@ -540,7 +540,7 @@ static int gtp_build_skb_ip4(struct sk_buff *skb, struct net_device *dev,
mtu = dst_mtu(&rt->dst);
}
- rt->dst.ops->update_pmtu(&rt->dst, NULL, skb, mtu, true);
+ rt->dst.ops->update_pmtu(&rt->dst, NULL, skb, mtu, false);
if (!skb_is_gso(skb) && (iph->frag_off & htons(IP_DF)) &&
mtu < ntohs(iph->tot_len)) {