Commit cfdf1e1b authored by Jesse Gross's avatar Jesse Gross Committed by David S. Miller

udptunnel: Add SKB_GSO_UDP_TUNNEL during gro_complete.

When doing GRO processing for UDP tunnels, we never add
SKB_GSO_UDP_TUNNEL to gso_type - only the type of the inner protocol
is added (such as SKB_GSO_TCPV4). The result is that if the packet is
later resegmented we will do GSO but not treat it as a tunnel. This
results in UDP fragmentation of the outer header instead of (i.e.) TCP
segmentation of the inner header as was originally on the wire.
Signed-off-by: default avatarJesse Gross <jesse@nicira.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 10b450cb
...@@ -621,6 +621,8 @@ static int vxlan_gro_complete(struct sk_buff *skb, int nhoff) ...@@ -621,6 +621,8 @@ static int vxlan_gro_complete(struct sk_buff *skb, int nhoff)
int vxlan_len = sizeof(struct vxlanhdr) + sizeof(struct ethhdr); int vxlan_len = sizeof(struct vxlanhdr) + sizeof(struct ethhdr);
int err = -ENOSYS; int err = -ENOSYS;
udp_tunnel_gro_complete(skb, nhoff);
eh = (struct ethhdr *)(skb->data + nhoff + sizeof(struct vxlanhdr)); eh = (struct ethhdr *)(skb->data + nhoff + sizeof(struct vxlanhdr));
type = eh->h_proto; type = eh->h_proto;
......
...@@ -100,6 +100,15 @@ static inline struct sk_buff *udp_tunnel_handle_offloads(struct sk_buff *skb, ...@@ -100,6 +100,15 @@ static inline struct sk_buff *udp_tunnel_handle_offloads(struct sk_buff *skb,
return iptunnel_handle_offloads(skb, udp_csum, type); return iptunnel_handle_offloads(skb, udp_csum, type);
} }
static inline void udp_tunnel_gro_complete(struct sk_buff *skb, int nhoff)
{
struct udphdr *uh;
uh = (struct udphdr *)(skb->data + nhoff - sizeof(struct udphdr));
skb_shinfo(skb)->gso_type |= uh->check ?
SKB_GSO_UDP_TUNNEL_CSUM : SKB_GSO_UDP_TUNNEL;
}
static inline void udp_tunnel_encap_enable(struct socket *sock) static inline void udp_tunnel_encap_enable(struct socket *sock)
{ {
#if IS_ENABLED(CONFIG_IPV6) #if IS_ENABLED(CONFIG_IPV6)
......
...@@ -133,6 +133,8 @@ static int fou_gro_complete(struct sk_buff *skb, int nhoff) ...@@ -133,6 +133,8 @@ static int fou_gro_complete(struct sk_buff *skb, int nhoff)
int err = -ENOSYS; int err = -ENOSYS;
const struct net_offload **offloads; const struct net_offload **offloads;
udp_tunnel_gro_complete(skb, nhoff);
rcu_read_lock(); rcu_read_lock();
offloads = NAPI_GRO_CB(skb)->is_ipv6 ? inet6_offloads : inet_offloads; offloads = NAPI_GRO_CB(skb)->is_ipv6 ? inet6_offloads : inet_offloads;
ops = rcu_dereference(offloads[proto]); ops = rcu_dereference(offloads[proto]);
......
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