Commit 1fd54773 authored Dec 07, 2022 by Andrew Melnychenko Committed by David S. Miller Dec 12, 2022

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>

parent dd8b3a80

net/ipv4/udp_offload.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -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;

net/ipv6/udp_offload.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -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;