netdev - [PATCH net] sit: update frag

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Message-Id: <1512009674-1724-1-git-send-email-liuhangbin@gmail.com>
Date:   Thu, 30 Nov 2017 10:41:14 +0800
From:   Hangbin Liu <liuhangbin@...il.com>
To:     netdev@...r.kernel.org
Cc:     Nicolas Dichtel <nicolas.dichtel@...nd.com>,
        David Miller <davem@...emloft.net>,
        Hangbin Liu <liuhangbin@...il.com>
Subject: [PATCH net] sit: update frag_off info

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.

Fixes: f37234160233 ("sit: add support of link creation via rtnl")
Reported-by: Jianlin Shi <jishi@...hat.com>
Signed-off-by: Hangbin Liu <liuhangbin@...il.com>
---
 net/ipv6/sit.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index d60ddcb..d7dc23c 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -1098,6 +1098,7 @@ 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->fwmark != fwmark) {
 		t->parms.link = p->link;
 		t->fwmark = fwmark;
-- 
2.5.5