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Message-Id: <20240605-tcp_ao-tracepoints-v2-2-e91e161282ef@gmail.com>
Date: Wed, 05 Jun 2024 03:20:03 +0100
From: Dmitry Safonov via B4 Relay <devnull+0x7f454c46.gmail.com@...nel.org>
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>,
Steven Rostedt <rostedt@...dmis.org>,
Masami Hiramatsu <mhiramat@...nel.org>,
Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
Jonathan Corbet <corbet@....net>
Cc: Mohammad Nassiri <mnassiri@...na.com>, Simon Horman <horms@...nel.org>,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-trace-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
Dmitry Safonov <0x7f454c46@...il.com>
Subject: [PATCH net-next v2 2/6] net/tcp: Add a helper tcp_ao_hdr_maclen()
From: Dmitry Safonov <0x7f454c46@...il.com>
It's going to be used more in TCP-AO tracepoints.
Signed-off-by: Dmitry Safonov <0x7f454c46@...il.com>
---
include/net/tcp_ao.h | 5 +++++
net/ipv4/tcp_ao.c | 2 +-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/include/net/tcp_ao.h b/include/net/tcp_ao.h
index 471e177362b4..6501ed1dfa1e 100644
--- a/include/net/tcp_ao.h
+++ b/include/net/tcp_ao.h
@@ -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;
diff --git a/net/ipv4/tcp_ao.c b/net/ipv4/tcp_ao.c
index 781b67a52571..7c9e90e531e3 100644
--- a/net/ipv4/tcp_ao.c
+++ b/net/ipv4/tcp_ao.c
@@ -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)) {
--
2.42.0
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