netdev - [PATCH net-next 03/14] devlink: Enable the use of private flags in post

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Date: Wed, 15 Nov 2023 13:17:12 +0100
From: Petr Machata <petrm@...dia.com>
To: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
	<edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
	<pabeni@...hat.com>, <netdev@...r.kernel.org>
CC: Ido Schimmel <idosch@...dia.com>, Petr Machata <petrm@...dia.com>, "Amit
 Cohen" <amcohen@...dia.com>, <mlxsw@...dia.com>, Jiri Pirko <jiri@...dia.com>
Subject: [PATCH net-next 03/14] devlink: Enable the use of private flags in post_doit operations

From: Ido Schimmel <idosch@...dia.com>

Currently, private flags (e.g., 'DEVLINK_NL_FLAG_NEED_PORT') are only
used in pre_doit operations, but a subsequent patch will need to
conditionally lock and unlock the device lock in pre and post doit
operations, respectively.

As a preparation, enable the use of private flags in post_doit
operations in a similar fashion to how it is done for pre_doit
operations.

No functional changes intended.

Signed-off-by: Ido Schimmel <idosch@...dia.com>
Reviewed-by: Jiri Pirko <jiri@...dia.com>
Signed-off-by: Petr Machata <petrm@...dia.com>
---
 net/devlink/netlink.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/net/devlink/netlink.c b/net/devlink/netlink.c
index 7350138c8bb4..5bb6624f3288 100644
--- a/net/devlink/netlink.c
+++ b/net/devlink/netlink.c
@@ -141,14 +141,20 @@ int devlink_nl_pre_doit_port_optional(const struct genl_split_ops *ops,
 	return __devlink_nl_pre_doit(skb, info, DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT);
 }
 
+static void __devlink_nl_post_doit(struct sk_buff *skb, struct genl_info *info,
+				   u8 flags)
+{
+	struct devlink *devlink;
+
+	devlink = info->user_ptr[0];
+	devl_unlock(devlink);
+	devlink_put(devlink);
+}
+
 void devlink_nl_post_doit(const struct genl_split_ops *ops,
 			  struct sk_buff *skb, struct genl_info *info)
 {
-	struct devlink *devlink;
-
-	devlink = info->user_ptr[0];
-	devl_unlock(devlink);
-	devlink_put(devlink);
+	__devlink_nl_post_doit(skb, info, 0);
 }
 
 static int devlink_nl_inst_single_dumpit(struct sk_buff *msg,
-- 
2.41.0