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net/tcp: Use static_branch_tcp_{md5,ao} to drop ifdefs

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It's possible to clean-up some ifdefs by hiding that
tcp_{md5,ao}_needed static branch is defined and compiled only
under related configs, since commit 4c8530dc7d ("net/tcp: Only produce
AO/MD5 logs if there are any keys").

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 00:25:55 +01:00 committed by David S. Miller
parent d4cea2caee
commit 3966a668bf
2 changed files with 6 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
include/net/tcp.h
View File

@ -2386,21 +2386,15 @@ static inline void tcp_get_current_key(const struct sock *sk,
static inline bool tcp_key_is_md5(const struct tcp_key *key)
{
#ifdef CONFIG_TCP_MD5SIG
if (static_branch_unlikely(&tcp_md5_needed.key) &&
key->type == TCP_KEY_MD5)
return true;
#endif
if (static_branch_tcp_md5())
return key->type == TCP_KEY_MD5;
return false;
}
static inline bool tcp_key_is_ao(const struct tcp_key *key)
{
#ifdef CONFIG_TCP_AO
if (static_branch_unlikely(&tcp_ao_needed.key) &&
key->type == TCP_KEY_AO)
return true;
#endif
if (static_branch_tcp_ao())
return key->type == TCP_KEY_AO;
return false;
}

8
net/ipv4/tcp_ipv4.c
View File

@ -1054,12 +1054,10 @@ static void tcp_v4_timewait_ack(struct sock *sk, struct sk_buff *skb)
#else
if (0) {
#endif
#ifdef CONFIG_TCP_MD5SIG
} else if (static_branch_unlikely(&tcp_md5_needed.key)) {
} else if (static_branch_tcp_md5()) {
key.md5_key = tcp_twsk_md5_key(tcptw);
if (key.md5_key)
key.type = TCP_KEY_MD5;
#endif
}
tcp_v4_send_ack(sk, skb,
@ -1128,8 +1126,7 @@ static void tcp_v4_reqsk_send_ack(const struct sock *sk, struct sk_buff *skb,
#else
if (0) {
#endif
#ifdef CONFIG_TCP_MD5SIG
} else if (static_branch_unlikely(&tcp_md5_needed.key)) {
} else if (static_branch_tcp_md5()) {
const union tcp_md5_addr *addr;
int l3index;
@ -1138,7 +1135,6 @@ static void tcp_v4_reqsk_send_ack(const struct sock *sk, struct sk_buff *skb,
key.md5_key = tcp_md5_do_lookup(sk, l3index, addr, AF_INET);
if (key.md5_key)
key.type = TCP_KEY_MD5;
#endif
}
tcp_v4_send_ack(sk, skb, seq,