diff options
| author | Pravin B Shelar <pshelar@nicira.com> | 2013-05-07 20:41:07 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-05-08 13:13:30 -0700 |
| commit | 19acc327258ac5bcd0f31c07853e6d9784010fb4 (patch) | |
| tree | 4079bd2f20e09ebc1f9b23b2eef4ec6976801c74 /net | |
| parent | 54309fa60b5f57b90c1842176f6045e665d21142 (diff) | |
| download | lwn-19acc327258ac5bcd0f31c07853e6d9784010fb4.tar.gz lwn-19acc327258ac5bcd0f31c07853e6d9784010fb4.zip | |
gso: Handle Trans-Ether-Bridging protocol in skb_network_protocol()
Rather than having logic to calculate inner protocol in every
tunnel gso handler move it to gso code. This simplifies code.
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Cong Wang <amwang@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/dev.c | 11 | ||||
| -rw-r--r-- | net/ipv4/gre.c | 8 | ||||
| -rw-r--r-- | net/ipv4/udp.c | 4 |
3 files changed, 13 insertions, 10 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 40b1fadaf637..fc1e289397f5 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2213,6 +2213,17 @@ __be16 skb_network_protocol(struct sk_buff *skb) __be16 type = skb->protocol; int vlan_depth = ETH_HLEN; + /* Tunnel gso handlers can set protocol to ethernet. */ + if (type == htons(ETH_P_TEB)) { + struct ethhdr *eth; + + if (unlikely(!pskb_may_pull(skb, sizeof(struct ethhdr)))) + return 0; + + eth = (struct ethhdr *)skb_mac_header(skb); + type = eth->h_proto; + } + while (type == htons(ETH_P_8021Q) || type == htons(ETH_P_8021AD)) { struct vlan_hdr *vh; diff --git a/net/ipv4/gre.c b/net/ipv4/gre.c index cc22363965d2..b2e805af9b87 100644 --- a/net/ipv4/gre.c +++ b/net/ipv4/gre.c @@ -150,13 +150,7 @@ static struct sk_buff *gre_gso_segment(struct sk_buff *skb, csum = false; /* setup inner skb. */ - if (greh->protocol == htons(ETH_P_TEB)) { - struct ethhdr *eth = (struct ethhdr *)skb_inner_mac_header(skb); - skb->protocol = eth->h_proto; - } else { - skb->protocol = greh->protocol; - } - + skb->protocol = greh->protocol; skb->encapsulation = 0; if (unlikely(!pskb_may_pull(skb, ghl))) diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 0ae038a4c7a8..0bf5d399a03c 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -2311,7 +2311,6 @@ static struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb, struct sk_buff *segs = ERR_PTR(-EINVAL); int mac_len = skb->mac_len; int tnl_hlen = skb_inner_mac_header(skb) - skb_transport_header(skb); - struct ethhdr *inner_eth = (struct ethhdr *)skb_inner_mac_header(skb); __be16 protocol = skb->protocol; netdev_features_t enc_features; int outer_hlen; @@ -2324,8 +2323,7 @@ static struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb, skb_reset_mac_header(skb); skb_set_network_header(skb, skb_inner_network_offset(skb)); skb->mac_len = skb_inner_network_offset(skb); - inner_eth = (struct ethhdr *)skb_mac_header(skb); - skb->protocol = inner_eth->h_proto; + skb->protocol = htons(ETH_P_TEB); /* segment inner packet. */ enc_features = skb->dev->hw_enc_features & netif_skb_features(skb); |