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Message-ID: <20240224-tcp-ao-tracepoints-v1-1-15f31b7f30a7@arista.com>
Date: Sat, 24 Feb 2024 09:04:09 +0000
From: Dmitry Safonov <dima@...sta.com>
To: Eric Dumazet <edumazet@...gle.com>,
"David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
David Ahern <dsahern@...nel.org>,
Shuah Khan <shuah@...nel.org>,
Steven Rostedt <rostedt@...dmis.org>,
Masami Hiramatsu <mhiramat@...nel.org>,
Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc: Dmitry Safonov <dima@...sta.com>,
netdev@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-kselftest@...r.kernel.org,
linux-trace-kernel@...r.kernel.org,
Dmitry Safonov <0x7f454c46@...il.com>
Subject: [PATCH net-next 01/10] net/tcp: Use static_branch_tcp_{md5,ao} to drop ifdefs
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 4c8530dc7d7d ("net/tcp: Only produce
AO/MD5 logs if there are any keys").
Signed-off-by: Dmitry Safonov <dima@...sta.com>
---
include/net/tcp.h | 14 ++++----------
net/ipv4/tcp_ipv4.c | 8 ++------
2 files changed, 6 insertions(+), 16 deletions(-)
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 33bf92dff0af..c1fff9207e2d 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -2369,21 +2369,15 @@ 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;
}
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 0c50c5a32b84..56dfae81c671 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1050,12 +1050,10 @@ 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,
@@ -1124,8 +1122,7 @@ 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;
@@ -1134,7 +1131,6 @@ 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
}
/* RFC 7323 2.3
--
2.43.0
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