netdev - [PATCH net-next 3/9] inet_diag: add module pointer to "struct inet_diag

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Message-ID: <20240122112603.3270097-4-edumazet@google.com>
Date: Mon, 22 Jan 2024 11:25:57 +0000
From: Eric Dumazet <edumazet@...gle.com>
To: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>
Cc: David Ahern <dsahern@...nel.org>, Kuniyuki Iwashima <kuniyu@...zon.com>, 
	Martin KaFai Lau <kafai@...com>, Guillaume Nault <gnault@...hat.com>, netdev@...r.kernel.org, 
	eric.dumazet@...il.com, Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH net-next 3/9] inet_diag: add module pointer to "struct inet_diag_handler"

Following patch is going to use RCU instead of
inet_diag_table_mutex acquisition.

This patch is a preparation, no change of behavior yet.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 include/linux/inet_diag.h | 1 +
 net/dccp/diag.c           | 1 +
 net/ipv4/raw_diag.c       | 1 +
 net/ipv4/tcp_diag.c       | 1 +
 net/ipv4/udp_diag.c       | 2 ++
 net/mptcp/mptcp_diag.c    | 1 +
 net/sctp/diag.c           | 1 +
 7 files changed, 8 insertions(+)

diff --git a/include/linux/inet_diag.h b/include/linux/inet_diag.h
index 84abb30a3fbb13a61ed786bf32e0f72c0bbfbdd2..a9033696b0aad36ab9abd47e4b68e272053019d7 100644
--- a/include/linux/inet_diag.h
+++ b/include/linux/inet_diag.h
@@ -8,6 +8,7 @@
 struct inet_hashinfo;
 
 struct inet_diag_handler {
+	struct module	*owner;
 	void		(*dump)(struct sk_buff *skb,
 				struct netlink_callback *cb,
 				const struct inet_diag_req_v2 *r);
diff --git a/net/dccp/diag.c b/net/dccp/diag.c
index 8a82c5a2c5a8c9ed8885b53744ff13c2bee657d8..f5019d95c3ae535555cc2b4d4885c718227fec67 100644
--- a/net/dccp/diag.c
+++ b/net/dccp/diag.c
@@ -58,6 +58,7 @@ static int dccp_diag_dump_one(struct netlink_callback *cb,
 }
 
 static const struct inet_diag_handler dccp_diag_handler = {
+	.owner		 = THIS_MODULE,
 	.dump		 = dccp_diag_dump,
 	.dump_one	 = dccp_diag_dump_one,
 	.idiag_get_info	 = dccp_diag_get_info,
diff --git a/net/ipv4/raw_diag.c b/net/ipv4/raw_diag.c
index fe2140c8375c8ebcc69880142c42655233007900..cc793bd8de258c3a12f11e95cec81c5ae4b9a7f6 100644
--- a/net/ipv4/raw_diag.c
+++ b/net/ipv4/raw_diag.c
@@ -213,6 +213,7 @@ static int raw_diag_destroy(struct sk_buff *in_skb,
 #endif
 
 static const struct inet_diag_handler raw_diag_handler = {
+	.owner			= THIS_MODULE,
 	.dump			= raw_diag_dump,
 	.dump_one		= raw_diag_dump_one,
 	.idiag_get_info		= raw_diag_get_info,
diff --git a/net/ipv4/tcp_diag.c b/net/ipv4/tcp_diag.c
index 4cbe4b44425a6a5daf55abe348c167932ca07222..f428ecf9120f2f596e1d67db2b2a0d0d0e211905 100644
--- a/net/ipv4/tcp_diag.c
+++ b/net/ipv4/tcp_diag.c
@@ -222,6 +222,7 @@ static int tcp_diag_destroy(struct sk_buff *in_skb,
 #endif
 
 static const struct inet_diag_handler tcp_diag_handler = {
+	.owner			= THIS_MODULE,
 	.dump			= tcp_diag_dump,
 	.dump_one		= tcp_diag_dump_one,
 	.idiag_get_info		= tcp_diag_get_info,
diff --git a/net/ipv4/udp_diag.c b/net/ipv4/udp_diag.c
index dc41a22ee80e829582349e8e644f204eff07df0e..38cb3a28e4ed6d54f7078afa2700e71db9ce4b85 100644
--- a/net/ipv4/udp_diag.c
+++ b/net/ipv4/udp_diag.c
@@ -237,6 +237,7 @@ static int udplite_diag_destroy(struct sk_buff *in_skb,
 #endif
 
 static const struct inet_diag_handler udp_diag_handler = {
+	.owner		 = THIS_MODULE,
 	.dump		 = udp_diag_dump,
 	.dump_one	 = udp_diag_dump_one,
 	.idiag_get_info  = udp_diag_get_info,
@@ -260,6 +261,7 @@ static int udplite_diag_dump_one(struct netlink_callback *cb,
 }
 
 static const struct inet_diag_handler udplite_diag_handler = {
+	.owner		 = THIS_MODULE,
 	.dump		 = udplite_diag_dump,
 	.dump_one	 = udplite_diag_dump_one,
 	.idiag_get_info  = udp_diag_get_info,
diff --git a/net/mptcp/mptcp_diag.c b/net/mptcp/mptcp_diag.c
index 5409c2ea3f5728a05999db17b7af1b1fb56f757e..bd8ff5950c8d33766a0da971dc127f106feb8481 100644
--- a/net/mptcp/mptcp_diag.c
+++ b/net/mptcp/mptcp_diag.c
@@ -225,6 +225,7 @@ static void mptcp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
 }
 
 static const struct inet_diag_handler mptcp_diag_handler = {
+	.owner		 = THIS_MODULE,
 	.dump		 = mptcp_diag_dump,
 	.dump_one	 = mptcp_diag_dump_one,
 	.idiag_get_info  = mptcp_diag_get_info,
diff --git a/net/sctp/diag.c b/net/sctp/diag.c
index eb05131ff1dd671e734457e28b2d7b64eab07f85..23359e522273f0377080007c75eb2c276945f781 100644
--- a/net/sctp/diag.c
+++ b/net/sctp/diag.c
@@ -507,6 +507,7 @@ static void sctp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb,
 }
 
 static const struct inet_diag_handler sctp_diag_handler = {
+	.owner		 = THIS_MODULE,
 	.dump		 = sctp_diag_dump,
 	.dump_one	 = sctp_diag_dump_one,
 	.idiag_get_info  = sctp_diag_get_info,
-- 
2.43.0.429.g432eaa2c6b-goog