linux-kernel - [PATCH v4 1/5] netfilter: amanda: annotate nf_nat_amanda_hook with _

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Message-ID: <20260204153812.739799-2-sun.jian.kdev@gmail.com>
Date: Wed,  4 Feb 2026 23:38:08 +0800
From: Sun Jian <sun.jian.kdev@...il.com>
To: Florian Westphal <fw@...len.de>
Cc: Pablo Neira Ayuso <pablo@...filter.org>,
	netfilter-devel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Sun Jian <sun.jian.kdev@...il.com>
Subject: [PATCH v4 1/5] netfilter: amanda: annotate nf_nat_amanda_hook with __rcu

The nf_nat_amanda_hook is an RCU-protected pointer but lacks the
proper __rcu annotation. Add the annotation to ensure the declaration
correctly reflects its usage via rcu_dereference().

Suggested-by: Florian Westphal <fw@...len.de>
Signed-off-by: Sun Jian <sun.jian.kdev@...il.com>
---
 include/linux/netfilter/nf_conntrack_amanda.h | 12 ++++++------
 net/netfilter/nf_conntrack_amanda.c           | 14 +++++++-------
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/include/linux/netfilter/nf_conntrack_amanda.h b/include/linux/netfilter/nf_conntrack_amanda.h
index 6f0ac896fcc9..9f957598a9da 100644
--- a/include/linux/netfilter/nf_conntrack_amanda.h
+++ b/include/linux/netfilter/nf_conntrack_amanda.h
@@ -7,10 +7,10 @@
 #include <linux/skbuff.h>
 #include <net/netfilter/nf_conntrack_expect.h>
 
-extern unsigned int (*nf_nat_amanda_hook)(struct sk_buff *skb,
-					  enum ip_conntrack_info ctinfo,
-					  unsigned int protoff,
-					  unsigned int matchoff,
-					  unsigned int matchlen,
-					  struct nf_conntrack_expect *exp);
+extern unsigned int (__rcu *nf_nat_amanda_hook)(struct sk_buff *skb,
+						enum ip_conntrack_info ctinfo,
+						unsigned int protoff,
+						unsigned int matchoff,
+						unsigned int matchlen,
+						struct nf_conntrack_expect *exp);
 #endif /* _NF_CONNTRACK_AMANDA_H */
diff --git a/net/netfilter/nf_conntrack_amanda.c b/net/netfilter/nf_conntrack_amanda.c
index 7be4c35e4795..c0132559f6af 100644
--- a/net/netfilter/nf_conntrack_amanda.c
+++ b/net/netfilter/nf_conntrack_amanda.c
@@ -37,13 +37,13 @@ MODULE_PARM_DESC(master_timeout, "timeout for the master connection");
 module_param(ts_algo, charp, 0400);
 MODULE_PARM_DESC(ts_algo, "textsearch algorithm to use (default kmp)");
 
-unsigned int (*nf_nat_amanda_hook)(struct sk_buff *skb,
-				   enum ip_conntrack_info ctinfo,
-				   unsigned int protoff,
-				   unsigned int matchoff,
-				   unsigned int matchlen,
-				   struct nf_conntrack_expect *exp)
-				   __read_mostly;
+unsigned int (__rcu *nf_nat_amanda_hook)(struct sk_buff *skb,
+					 enum ip_conntrack_info ctinfo,
+					 unsigned int protoff,
+					 unsigned int matchoff,
+					 unsigned int matchlen,
+					 struct nf_conntrack_expect *exp)
+					 __read_mostly;
 EXPORT_SYMBOL_GPL(nf_nat_amanda_hook);
 
 enum amanda_strings {
-- 
2.43.0