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Message-Id: <20231215175711.323784-3-pctammela@mojatatu.com>
Date: Fri, 15 Dec 2023 14:57:11 -0300
From: Pedro Tammela <pctammela@...atatu.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net,
edumazet@...gle.com,
kuba@...nel.org,
pabeni@...hat.com,
horms@...nel.org,
jiri@...nulli.us,
jhs@...atatu.com,
victor@...atatu.com,
martin@...ongswan.org,
idosch@...dia.com,
razor@...ckwall.org,
lucien.xin@...il.com,
edwin.peer@...adcom.com,
amcohen@...dia.com,
Pedro Tammela <pctammela@...atatu.com>
Subject: [PATCH net-next 2/2] net: rtnl: use rcu_replace_pointer_rtnl in rtnl_unregister_*
With the introduction of the rcu_replace_pointer_rtnl helper,
cleanup the rtnl_unregister_* functions to use the helper instead
of open coding it.
Signed-off-by: Pedro Tammela <pctammela@...atatu.com>
---
net/core/rtnetlink.c | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 5e0ab4c08f72..94c4572512b8 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -342,8 +342,7 @@ int rtnl_unregister(int protocol, int msgtype)
return -ENOENT;
}
- link = rtnl_dereference(tab[msgindex]);
- RCU_INIT_POINTER(tab[msgindex], NULL);
+ link = rcu_replace_pointer_rtnl(tab[msgindex], NULL);
rtnl_unlock();
kfree_rcu(link, rcu);
@@ -368,18 +367,13 @@ void rtnl_unregister_all(int protocol)
BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX);
rtnl_lock();
- tab = rtnl_dereference(rtnl_msg_handlers[protocol]);
+ tab = rcu_replace_pointer_rtnl(rtnl_msg_handlers[protocol], NULL);
if (!tab) {
rtnl_unlock();
return;
}
- RCU_INIT_POINTER(rtnl_msg_handlers[protocol], NULL);
for (msgindex = 0; msgindex < RTM_NR_MSGTYPES; msgindex++) {
- link = rtnl_dereference(tab[msgindex]);
- if (!link)
- continue;
-
- RCU_INIT_POINTER(tab[msgindex], NULL);
+ link = rcu_replace_pointer_rtnl(tab[msgindex], NULL);
kfree_rcu(link, rcu);
}
rtnl_unlock();
--
2.40.1
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