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udp: allow header check for dodgy GSO_UDP_L4 packets. 

Allow UDP_L4 for robust packets.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Melnychenko 2022-12-07 13:35:53 +02:00 committed by David S. Miller
parent dd8b3a802b
commit 1fd54773c2
2 changed files with 4 additions and 2 deletions
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3
net/ipv4/udp_offload.c
View File

@ -387,7 +387,8 @@ static struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb,
if (!pskb_may_pull(skb, sizeof(struct udphdr)))
goto out;
if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4)
if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4 &&
!skb_gso_ok(skb, features | NETIF_F_GSO_ROBUST))
return __udp_gso_segment(skb, features, false);
mss = skb_shinfo(skb)->gso_size;

3
net/ipv6/udp_offload.c
View File

@ -42,7 +42,8 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb,
if (!pskb_may_pull(skb, sizeof(struct udphdr)))
goto out;
if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4)
if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4 &&
!skb_gso_ok(skb, features | NETIF_F_GSO_ROBUST))
return __udp_gso_segment(skb, features, true);
mss = skb_shinfo(skb)->gso_size;