sit: update frag_off info

[ Upstream commit f859b4af1c52493ec21173ccc73d0b60029b5b88 ]

After parsing the sit netlink change info, we forget to update frag_off in
ipip6_tunnel_update(). Fix it by assigning frag_off with new value.

Reported-by: Jianlin Shi <jishi@redhat.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>

diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 85c4b2fff504d7462f03a7d373e6a7630aaec513..295502b261a811d3ad77ea2181087875cebf1b5e 100644 (file)
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -1092,6 +1092,7 @@ static void ipip6_tunnel_update(struct ip_tunnel *t, struct ip_tunnel_parm *p)
        ipip6_tunnel_link(sitn, t);
        t->parms.iph.ttl = p->iph.ttl;
        t->parms.iph.tos = p->iph.tos;
+       t->parms.iph.frag_off = p->iph.frag_off;
        if (t->parms.link != p->link) {
                t->parms.link = p->link;
                ipip6_tunnel_bind_dev(t->dev);