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net/tcp: Add a helper tcp_ao_hdr_maclen()

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It's going to be used more in TCP-AO tracepoints.

Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Dmitry Safonov <0x7f454c46@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dmitry Safonov 2024-06-07 00:25:56 +01:00 committed by David S. Miller
parent 3966a668bf
commit 72863087f6
2 changed files with 6 additions and 1 deletions
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5
include/net/tcp_ao.h
View File

@ -19,6 +19,11 @@ struct tcp_ao_hdr {
u8 rnext_keyid;
};
static inline u8 tcp_ao_hdr_maclen(const struct tcp_ao_hdr *aoh)
{
return aoh->length - sizeof(struct tcp_ao_hdr);
}
struct tcp_ao_counters {
atomic64_t pkt_good;
atomic64_t pkt_bad;

2
net/ipv4/tcp_ao.c
View File

@ -884,8 +884,8 @@ tcp_ao_verify_hash(const struct sock *sk, const struct sk_buff *skb,
const struct tcp_ao_hdr *aoh, struct tcp_ao_key *key,
u8 *traffic_key, u8 *phash, u32 sne, int l3index)
{
u8 maclen = aoh->length - sizeof(struct tcp_ao_hdr);
const struct tcphdr *th = tcp_hdr(skb);
u8 maclen = tcp_ao_hdr_maclen(aoh);
void *hash_buf = NULL;
if (maclen != tcp_ao_maclen(key)) {