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tcp: add indirect call wrapper in tcp_conn_request()

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Small improvement in SYN processing, to directly call
tcp_v6_init_seq_and_ts_off() or tcp_v4_init_seq_and_ts_off().

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260410174950.745670-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Eric Dumazet 2026-04-10 17:49:50 +00:00 committed by Jakub Kicinski
parent 59818773ba
commit 29703d7813
4 changed files with 12 additions and 3 deletions
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6
include/net/tcp.h
View File

@ -3084,4 +3084,10 @@ static inline int tcp_recv_should_stop(struct sock *sk)
signal_pending(current);
}
INDIRECT_CALLABLE_DECLARE(union tcp_seq_and_ts_off
tcp_v4_init_seq_and_ts_off(const struct net *net,
const struct sk_buff *skb));
INDIRECT_CALLABLE_DECLARE(union tcp_seq_and_ts_off
tcp_v6_init_seq_and_ts_off(const struct net *net,
const struct sk_buff *skb));
#endif /* _TCP_H */

5
net/ipv4/tcp_input.c
View File

@ -7658,7 +7658,10 @@ int tcp_conn_request(struct request_sock_ops *rsk_ops,
goto drop_and_free;
if (tmp_opt.tstamp_ok || (!want_cookie && !isn))
st = af_ops->init_seq_and_ts_off(net, skb);
st = INDIRECT_CALL_INET(af_ops->init_seq_and_ts_off,
tcp_v6_init_seq_and_ts_off,
tcp_v4_init_seq_and_ts_off,
net, skb);
if (tmp_opt.tstamp_ok) {
tcp_rsk(req)->req_usec_ts = dst_tcp_usec_ts(dst);

2
net/ipv4/tcp_ipv4.c
View File

@ -105,7 +105,7 @@ static DEFINE_PER_CPU(struct sock_bh_locked, ipv4_tcp_sk) = {
static DEFINE_MUTEX(tcp_exit_batch_mutex);
static union tcp_seq_and_ts_off
INDIRECT_CALLABLE_SCOPE union tcp_seq_and_ts_off
tcp_v4_init_seq_and_ts_off(const struct net *net, const struct sk_buff *skb)
{
return secure_tcp_seq_and_ts_off(net,

2
net/ipv6/tcp_ipv6.c
View File

@ -105,7 +105,7 @@ static void inet6_sk_rx_dst_set(struct sock *sk, const struct sk_buff *skb)
}
}
static union tcp_seq_and_ts_off
INDIRECT_CALLABLE_SCOPE union tcp_seq_and_ts_off
tcp_v6_init_seq_and_ts_off(const struct net *net, const struct sk_buff *skb)
{
return secure_tcpv6_seq_and_ts_off(net,