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Message-ID: <20241014201828.91221-11-kuniyu@amazon.com>
Date: Mon, 14 Oct 2024 13:18:27 -0700
From: Kuniyuki Iwashima <kuniyu@...zon.com>
To: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
<edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
<pabeni@...hat.com>
CC: Kuniyuki Iwashima <kuniyu@...zon.com>, Kuniyuki Iwashima
<kuni1840@...il.com>, <netdev@...r.kernel.org>, Oliver Hartkopp
<socketcan@...tkopp.net>, Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [PATCH v2 net-next 10/11] can: gw: Use rtnl_register_many().
We will remove rtnl_register_module() in favour of rtnl_register_many().
rtnl_register_many() will unwind the previous successful registrations
on failure and simplify module error handling.
Let's use rtnl_register_many() instead.
Signed-off-by: Kuniyuki Iwashima <kuniyu@...zon.com>
---
Cc: Oliver Hartkopp <socketcan@...tkopp.net>
Cc: Marc Kleine-Budde <mkl@...gutronix.de>
v2:
* Add __initconst_or_module
* Use C99 initialisation
---
net/can/gw.c | 29 ++++++++++++-----------------
1 file changed, 12 insertions(+), 17 deletions(-)
diff --git a/net/can/gw.c b/net/can/gw.c
index 37528826935e..ef93293c1fae 100644
--- a/net/can/gw.c
+++ b/net/can/gw.c
@@ -1265,6 +1265,15 @@ static struct pernet_operations cangw_pernet_ops = {
.exit_batch = cangw_pernet_exit_batch,
};
+static const struct rtnl_msg_handler cgw_rtnl_msg_handlers[] __initconst_or_module = {
+ {.owner = THIS_MODULE, .protocol = PF_CAN, .msgtype = RTM_NEWROUTE,
+ .doit = cgw_create_job},
+ {.owner = THIS_MODULE, .protocol = PF_CAN, .msgtype = RTM_DELROUTE,
+ .doit = cgw_remove_job},
+ {.owner = THIS_MODULE, .protocol = PF_CAN, .msgtype = RTM_GETROUTE,
+ .dumpit = cgw_dump_jobs},
+};
+
static __init int cgw_module_init(void)
{
int ret;
@@ -1290,27 +1299,13 @@ static __init int cgw_module_init(void)
if (ret)
goto out_register_notifier;
- ret = rtnl_register_module(THIS_MODULE, PF_CAN, RTM_GETROUTE,
- NULL, cgw_dump_jobs, 0);
- if (ret)
- goto out_rtnl_register1;
-
- ret = rtnl_register_module(THIS_MODULE, PF_CAN, RTM_NEWROUTE,
- cgw_create_job, NULL, 0);
- if (ret)
- goto out_rtnl_register2;
- ret = rtnl_register_module(THIS_MODULE, PF_CAN, RTM_DELROUTE,
- cgw_remove_job, NULL, 0);
+ ret = rtnl_register_many(cgw_rtnl_msg_handlers);
if (ret)
- goto out_rtnl_register3;
+ goto out_rtnl_register;
return 0;
-out_rtnl_register3:
- rtnl_unregister(PF_CAN, RTM_NEWROUTE);
-out_rtnl_register2:
- rtnl_unregister(PF_CAN, RTM_GETROUTE);
-out_rtnl_register1:
+out_rtnl_register:
unregister_netdevice_notifier(¬ifier);
out_register_notifier:
kmem_cache_destroy(cgw_cache);
--
2.39.5 (Apple Git-154)
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