From 6db93ea13b7937c0523ea1f977b322f1347a5633 Mon Sep 17 00:00:00 2001 From: Tom Herbert Date: Tue, 10 Feb 2015 16:30:29 -0800 Subject: udp: Set SKB_GSO_UDP_TUNNEL* in UDP GRO path Properly set GSO types and skb->encapsulation in the UDP tunnel GRO complete so that packets are properly represented for GSO. This sets SKB_GSO_UDP_TUNNEL or SKB_GSO_UDP_TUNNEL_CSUM depending on whether non-zero checksums were received, and sets SKB_GSO_TUNNEL_REMCSUM if the remote checksum option was processed. Signed-off-by: Tom Herbert Signed-off-by: David S. Miller --- net/ipv4/udp_offload.c | 13 ++++++++++++- net/ipv6/udp_offload.c | 6 +++++- 2 files changed, 17 insertions(+), 2 deletions(-) (limited to 'net') diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c index d10f6f4ead27..4915d8284a86 100644 --- a/net/ipv4/udp_offload.c +++ b/net/ipv4/udp_offload.c @@ -402,6 +402,13 @@ int udp_gro_complete(struct sk_buff *skb, int nhoff) } rcu_read_unlock(); + + if (skb->remcsum_offload) + skb_shinfo(skb)->gso_type |= SKB_GSO_TUNNEL_REMCSUM; + + skb->encapsulation = 1; + skb_set_inner_mac_header(skb, nhoff + sizeof(struct udphdr)); + return err; } @@ -410,9 +417,13 @@ static int udp4_gro_complete(struct sk_buff *skb, int nhoff) const struct iphdr *iph = ip_hdr(skb); struct udphdr *uh = (struct udphdr *)(skb->data + nhoff); - if (uh->check) + if (uh->check) { + skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_TUNNEL_CSUM; uh->check = ~udp_v4_check(skb->len - nhoff, iph->saddr, iph->daddr, 0); + } else { + skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_TUNNEL; + } return udp_gro_complete(skb, nhoff); } diff --git a/net/ipv6/udp_offload.c b/net/ipv6/udp_offload.c index a56276996b72..ab889bb16b3c 100644 --- a/net/ipv6/udp_offload.c +++ b/net/ipv6/udp_offload.c @@ -161,9 +161,13 @@ static int udp6_gro_complete(struct sk_buff *skb, int nhoff) const struct ipv6hdr *ipv6h = ipv6_hdr(skb); struct udphdr *uh = (struct udphdr *)(skb->data + nhoff); - if (uh->check) + if (uh->check) { + skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_TUNNEL_CSUM; uh->check = ~udp_v6_check(skb->len - nhoff, &ipv6h->saddr, &ipv6h->daddr, 0); + } else { + skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_TUNNEL; + } return udp_gro_complete(skb, nhoff); } -- cgit v1.2.3-58-ga151