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net/tcp: Wire TCP-AO to request sockets

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Now when the new request socket is created from the listening socket,
it's recorded what MKT was used by the peer. tcp_rsk_used_ao() is
a new helper for checking if TCP-AO option was used to create the
request socket.
tcp_ao_copy_all_matching() will copy all keys that match the peer on the
request socket, as well as preparing them for the usage (creating
traffic keys).

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>
This commit is contained in:
Dmitry Safonov
2023-10-23 20:22:02 +01:00
committed by David S. Miller
parent decde2586b
commit 06b22ef295
12 changed files with 505 additions and 50 deletions
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2
net/ipv4/syncookies.c
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@@ -400,6 +400,8 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb)
treq->snt_synack = 0;
treq->tfo_listener = false;
tcp_ao_syncookie(sk, skb, treq, AF_INET);
if (IS_ENABLED(CONFIG_SMC))
ireq->smc_ok = 0;