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| author | Dmitry Safonov <dima@arista.com> | 2023-10-23 20:22:06 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-10-27 10:35:45 +0100 |
| commit | 64382c71a5575741933dfdb0cf7162c6e9b8854e (patch) | |
| tree | 9e21fcb808c8285192549c0cc747e659e5c3e762 /net/ipv4/tcp_ipv4.c | |
| parent | af09a341dcf63b34ce742295ad1ce876246c5de2 (diff) | |
| download | linux-stable-64382c71a5575741933dfdb0cf7162c6e9b8854e.tar.gz linux-stable-64382c71a5575741933dfdb0cf7162c6e9b8854e.tar.bz2 linux-stable-64382c71a5575741933dfdb0cf7162c6e9b8854e.zip | |
net/tcp: Add TCP-AO SNE support
Add Sequence Number Extension (SNE) for TCP-AO.
This is needed to protect long-living TCP-AO connections from replaying
attacks after sequence number roll-over, see RFC5925 (6.2).
Co-developed-by: Francesco Ruggeri <fruggeri@arista.com>
Signed-off-by: Francesco Ruggeri <fruggeri@arista.com>
Co-developed-by: Salam Noureddine <noureddine@arista.com>
Signed-off-by: Salam Noureddine <noureddine@arista.com>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Acked-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index ece95d5138e1..bdec99707028 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -676,7 +676,7 @@ static bool tcp_v4_ao_sign_reset(const struct sock *sk, struct sk_buff *skb, u8 keyid; rcu_read_lock(); - if (tcp_ao_prepare_reset(sk, skb, aoh, l3index, + if (tcp_ao_prepare_reset(sk, skb, aoh, l3index, ntohl(reply->seq), &key, &traffic_key, &allocated_traffic_key, &keyid, &ao_sne)) goto out; @@ -1034,6 +1034,7 @@ static void tcp_v4_timewait_ack(struct sock *sk, struct sk_buff *skb) struct tcp_ao_key *rnext_key; key.traffic_key = snd_other_key(key.ao_key); + key.sne = READ_ONCE(ao_info->snd_sne); rnext_key = READ_ONCE(ao_info->rnext_key); key.rcv_next = rnext_key->rcvid; key.type = TCP_KEY_AO; |