diff options
| author | Dmitry Safonov <dima@arista.com> | 2023-10-23 21:22:07 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-10-27 11:35:45 +0200 |
| commit | 2717b5adea9e2558798c30eb0e93c01722edbb0a (patch) | |
| tree | 6adffd2af8652488e22a9f1767422f655f32d820 /include/net/tcp_ao.h | |
| parent | net/tcp: Add TCP-AO SNE support (diff) | |
| download | linux-2717b5adea9e2558798c30eb0e93c01722edbb0a.tar.xz linux-2717b5adea9e2558798c30eb0e93c01722edbb0a.zip | |
net/tcp: Add tcp_hash_fail() ratelimited logs
Add a helper for logging connection-detailed messages for failed TCP
hash verification (both MD5 and AO).
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 'include/net/tcp_ao.h')
| -rw-r--r-- | include/net/tcp_ao.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/net/tcp_ao.h b/include/net/tcp_ao.h index 0c3516d1b968..4da6e3657913 100644 --- a/include/net/tcp_ao.h +++ b/include/net/tcp_ao.h @@ -118,6 +118,35 @@ struct tcp_ao_info { struct rcu_head rcu; }; +#define tcp_hash_fail(msg, family, skb, fmt, ...) \ +do { \ + const struct tcphdr *th = tcp_hdr(skb); \ + char hdr_flags[5] = {}; \ + char *f = hdr_flags; \ + \ + if (th->fin) \ + *f++ = 'F'; \ + if (th->syn) \ + *f++ = 'S'; \ + if (th->rst) \ + *f++ = 'R'; \ + if (th->ack) \ + *f++ = 'A'; \ + if (f != hdr_flags) \ + *f = ' '; \ + if ((family) == AF_INET) { \ + net_info_ratelimited("%s for (%pI4, %d)->(%pI4, %d) %s" fmt "\n", \ + msg, &ip_hdr(skb)->saddr, ntohs(th->source), \ + &ip_hdr(skb)->daddr, ntohs(th->dest), \ + hdr_flags, ##__VA_ARGS__); \ + } else { \ + net_info_ratelimited("%s for [%pI6c]:%u->[%pI6c]:%u %s" fmt "\n", \ + msg, &ipv6_hdr(skb)->saddr, ntohs(th->source), \ + &ipv6_hdr(skb)->daddr, ntohs(th->dest), \ + hdr_flags, ##__VA_ARGS__); \ + } \ +} while (0) + #ifdef CONFIG_TCP_AO /* TCP-AO structures and functions */ |