diff options
| author | Peilin Ye <peilin.ye@bytedance.com> | 2022-04-14 13:34:26 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-05-09 09:03:26 +0200 |
| commit | 0ecc5304e80a7d321d108355d412dfb8eb656809 (patch) | |
| tree | f0f20a197d53e6b6490e38b3e35e3aa386c6d1be | |
| parent | 781571034993f7b7e9267d31f5706c5e6d9764f8 (diff) | |
ip6_gre: Avoid updating tunnel->tun_hlen in __gre6_xmit()
[ Upstream commit f40c064e933d7787ca7411b699504d7a2664c1f5 ]
Do not update tunnel->tun_hlen in data plane code. Use a local variable
instead, just like "tunnel_hlen" in net/ipv4/ip_gre.c:gre_fb_xmit().
Co-developed-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Peilin Ye <peilin.ye@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | net/ipv6/ip6_gre.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 5dbc280d4385..e550db28aabb 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -730,6 +730,7 @@ static netdev_tx_t __gre6_xmit(struct sk_buff *skb, struct ip_tunnel_info *tun_info; const struct ip_tunnel_key *key; __be16 flags; + int tun_hlen; tun_info = skb_tunnel_info(skb); if (unlikely(!tun_info || @@ -748,9 +749,9 @@ static netdev_tx_t __gre6_xmit(struct sk_buff *skb, dsfield = key->tos; flags = key->tun_flags & (TUNNEL_CSUM | TUNNEL_KEY | TUNNEL_SEQ); - tunnel->tun_hlen = gre_calc_hlen(flags); + tun_hlen = gre_calc_hlen(flags); - gre_build_header(skb, tunnel->tun_hlen, + gre_build_header(skb, tun_hlen, flags, protocol, tunnel_id_to_key32(tun_info->key.tun_id), (flags & TUNNEL_SEQ) ? htonl(tunnel->o_seqno++) |