diff options
| author |   Jason A. Donenfeld <Jason@zx2c4.com> | 2017-06-25 16:24:23 +0200 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2017-06-26 12:35:06 +0200 |
| commit | 3b2b6e7c1eb6a8d24c057e7f032e5cd4fea191fe (patch) | |
| tree | a9fca6dd1a0443e9e4096d9c44867630c36624b9 /src/socket.c | |
| parent | device: remove icmp conntrack hacks (diff) | |
| download | wireguard-linux-compat-3b2b6e7c1eb6a8d24c057e7f032e5cd4fea191fe.tar.xz wireguard-linux-compat-3b2b6e7c1eb6a8d24c057e7f032e5cd4fea191fe.zip | |
global: cleanup IP header checking
This way is more correct and ensures we're within the skb head.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Diffstat (limited to 'src/socket.c')
| -rw-r--r-- | src/socket.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/socket.c b/src/socket.c index 332a682..40f8b8d 100644 --- a/src/socket.c +++ b/src/socket.c @@ -207,12 +207,12 @@ int socket_send_buffer_as_reply_to_skb(struct wireguard_device *wg, struct sk_bu int socket_endpoint_from_skb(struct endpoint *endpoint, struct sk_buff *skb) { memset(endpoint, 0, sizeof(struct endpoint)); - if (ip_hdr(skb)->version == 4) { + if (skb->protocol == htons(ETH_P_IP)) { endpoint->addr4.sin_family = AF_INET; endpoint->addr4.sin_port = udp_hdr(skb)->source; endpoint->addr4.sin_addr.s_addr = ip_hdr(skb)->saddr; endpoint->src4.s_addr = ip_hdr(skb)->daddr; - } else if (ip_hdr(skb)->version == 6) { + } else if (skb->protocol == htons(ETH_P_IPV6)) { endpoint->addr6.sin6_family = AF_INET6; endpoint->addr6.sin6_port = udp_hdr(skb)->source; endpoint->addr6.sin6_addr = ipv6_hdr(skb)->saddr; |