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| author | Adam Langley <agl@imperialviolet.org> | 2008-07-31 20:49:48 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-07-31 20:49:48 -0700 |
| commit | 90b7e1120bb43ffaabb88d28f80a0c2e13167b15 (patch) | |
| tree | 5264787eb3c303186cff15bfd6b7ebef2a3ecb7b /net/ipv4 | |
| parent | 77e2f14f71d68d05945f1d30ca55b5194d6ab1ce (diff) | |
| download | blackbird-op-linux-90b7e1120bb43ffaabb88d28f80a0c2e13167b15.tar.gz blackbird-op-linux-90b7e1120bb43ffaabb88d28f80a0c2e13167b15.zip | |
tcp: MD5: Fix MD5 signatures on certain ACK packets
I noticed, looking at tcpdumps, that timewait ACKs were getting sent
with an incorrect MD5 signature when signatures were enabled.
I broke this in 49a72dfb8814c2d65bd9f8c9c6daf6395a1ec58d ("tcp: Fix
MD5 signatures for non-linear skbs"). I didn't take into account that
the skb passed to tcp_*_send_ack was the inbound packet, thus the
source and dest addresses need to be swapped when calculating the MD5
pseudoheader.
Signed-off-by: Adam Langley <agl@imperialviolet.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index b3875c0d83c7..91a8cfddf1c4 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -655,8 +655,8 @@ static void tcp_v4_send_ack(struct sk_buff *skb, u32 seq, u32 ack, rep.th.doff = arg.iov[0].iov_len/4; tcp_v4_md5_hash_hdr((__u8 *) &rep.opt[offset], - key, ip_hdr(skb)->daddr, - ip_hdr(skb)->saddr, &rep.th); + key, ip_hdr(skb)->saddr, + ip_hdr(skb)->daddr, &rep.th); } #endif arg.csum = csum_tcpudp_nofold(ip_hdr(skb)->daddr, |
