[PATCH v3 1/6] udp: allow header check for dodgy GSO_UDP_L4 packets.
From: Andrew Melnychenko <hidden>
Date: 2022-09-07 12:51:53
Also in:
lkml, virtualization
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Packets from TAP devices with USO offload converts to GSO_UDP_L4 & GSO_DODGY sk buffers. Added changes allow skipping segmentation for DODGY/ROBUST packets. Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Andrew Melnychenko <redacted> --- net/ipv4/udp_offload.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c
index 6d1a4bec2614..8e002419b4d5 100644
--- a/net/ipv4/udp_offload.c
+++ b/net/ipv4/udp_offload.c@@ -387,7 +387,7 @@ 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;
--
2.37.2