xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

geneve, vxlan: Don't set exceptions if skb->len < mtu

Browse Source 
We shouldn't abuse exceptions: if the destination MTU is already higher
than what we're transmitting, no exception should be created.

Fixes: 52a589d51f ("geneve: update skb dst pmtu on tx path")
Fixes: a93bf0ff44 ("vxlan: update skb dst pmtu on tx path")
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stefano Brivio
2018-10-12 23:53:59 +02:00
committed by David S. Miller
parent 7463e4f9b9
commit 6b4f92af3d
3 changed files with 15 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/net/geneve.c
View File

@@ -830,8 +830,8 @@ static int geneve_xmit_skb(struct sk_buff *skb, struct net_device *dev,
if (IS_ERR(rt))
return PTR_ERR(rt);
skb_dst_update_pmtu(skb, dst_mtu(&rt->dst) -
GENEVE_IPV4_HLEN - info->options_len);
skb_tunnel_check_pmtu(skb, &rt->dst,
GENEVE_IPV4_HLEN + info->options_len);
sport = udp_flow_src_port(geneve->net, skb, 1, USHRT_MAX, true);
if (geneve->collect_md) {
@@ -872,8 +872,7 @@ static int geneve6_xmit_skb(struct sk_buff *skb, struct net_device *dev,
if (IS_ERR(dst))
return PTR_ERR(dst);
skb_dst_update_pmtu(skb, dst_mtu(dst) -
GENEVE_IPV6_HLEN - info->options_len);
skb_tunnel_check_pmtu(skb, dst, GENEVE_IPV6_HLEN + info->options_len);
sport = udp_flow_src_port(geneve->net, skb, 1, USHRT_MAX, true);
if (geneve->collect_md) {

4
drivers/net/vxlan.c
View File

@@ -2194,7 +2194,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
}
ndst = &rt->dst;
skb_dst_update_pmtu(skb, dst_mtu(ndst) - VXLAN_HEADROOM);
skb_tunnel_check_pmtu(skb, ndst, VXLAN_HEADROOM);
tos = ip_tunnel_ecn_encap(tos, old_iph, skb);
ttl = ttl ? : ip4_dst_hoplimit(&rt->dst);
@@ -2231,7 +2231,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
goto out_unlock;
}
skb_dst_update_pmtu(skb, dst_mtu(ndst) - VXLAN6_HEADROOM);
skb_tunnel_check_pmtu(skb, ndst, VXLAN6_HEADROOM);
tos = ip_tunnel_ecn_encap(tos, old_iph, skb);
ttl = ttl ? : ip6_dst_hoplimit(ndst);