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| author |   Jason A. Donenfeld <Jason@zx2c4.com> | 2016-07-08 02:29:38 +0200 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2016-07-08 02:29:38 +0200 |
| commit | dc009781e0836fa1cb18df46ee7ac3b509738fed (patch) | |
| tree | 37bb23da616c6997a9f735234172258caad7d247 /src/receive.c | |
| parent | go test: don't rely on undefined append behavior (diff) | |
| download | wireguard-monolithic-historical-dc009781e0836fa1cb18df46ee7ac3b509738fed.tar.xz wireguard-monolithic-historical-dc009781e0836fa1cb18df46ee7ac3b509738fed.zip | |
persistent keepalive: add kernel mechanism
Diffstat (limited to 'src/receive.c')
| -rw-r--r-- | src/receive.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/receive.c b/src/receive.c index 1b86489..db19527 100644 --- a/src/receive.c +++ b/src/receive.c @@ -273,7 +273,7 @@ void packet_receive(struct wireguard_device *wg, struct sk_buff *skb) static const u8 addr; #endif - if (skb_data_offset(skb, &offset, &len) < 0) + if (unlikely(skb_data_offset(skb, &offset, &len) < 0 || !len)) goto err; switch (message_determine_type(skb->data + offset, len)) { case MESSAGE_HANDSHAKE_INITIATION: |