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authorDavid Ahern <dsahern@gmail.com>2020-04-20 17:13:52 -0600
committerDavid S. Miller <davem@davemloft.net>2020-04-22 12:32:11 -0700
commit16b9db1ce34ff00d6c18e82825125cfef0cdfb13 (patch)
tree0b80f20d78ad1ba90372a5c1c0711006807788b2 /drivers/net/vrf.c
parent0c922a4850eba2e668f73a3f1153196e09abb251 (diff)
downloadlinux-16b9db1ce34ff00d6c18e82825125cfef0cdfb13.tar.bz2
vrf: Check skb for XFRM_TRANSFORMED flag
To avoid a loop with qdiscs and xfrms, check if the skb has already gone through the qdisc attached to the VRF device and then to the xfrm layer. If so, no need for a second redirect. Fixes: 193125dbd8eb ("net: Introduce VRF device driver") Reported-by: Trev Larock <trev@larock.ca> Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/vrf.c')
-rw-r--r--drivers/net/vrf.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/vrf.c b/drivers/net/vrf.c
index 66e00ddc0d42..6f5d03b7d9c0 100644
--- a/drivers/net/vrf.c
+++ b/drivers/net/vrf.c
@@ -474,7 +474,8 @@ static struct sk_buff *vrf_ip6_out(struct net_device *vrf_dev,
if (rt6_need_strict(&ipv6_hdr(skb)->daddr))
return skb;
- if (qdisc_tx_is_default(vrf_dev))
+ if (qdisc_tx_is_default(vrf_dev) ||
+ IP6CB(skb)->flags & IP6SKB_XFRM_TRANSFORMED)
return vrf_ip6_out_direct(vrf_dev, sk, skb);
return vrf_ip6_out_redirect(vrf_dev, skb);
@@ -686,7 +687,8 @@ static struct sk_buff *vrf_ip_out(struct net_device *vrf_dev,
ipv4_is_lbcast(ip_hdr(skb)->daddr))
return skb;
- if (qdisc_tx_is_default(vrf_dev))
+ if (qdisc_tx_is_default(vrf_dev) ||
+ IPCB(skb)->flags & IPSKB_XFRM_TRANSFORMED)
return vrf_ip_out_direct(vrf_dev, sk, skb);
return vrf_ip_out_redirect(vrf_dev, skb);