netdev - [PATCH net-next 08/13] devlink: don't take instance lock around eswitch mode set

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Message-Id: <20180522051255.9438-9-jakub.kicinski@netronome.com>
Date:   Mon, 21 May 2018 22:12:50 -0700
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, oss-drivers@...ronome.com,
        Jakub Kicinski <jakub.kicinski@...ronome.com>, jiri@...nulli.us
Subject: [PATCH net-next 08/13] devlink: don't take instance lock around eswitch mode set

Changing switch mode may want to register and unregister devlink
ports.  Therefore similarly to DEVLINK_CMD_PORT_SPLIT/UNSPLIT it
should not take the instance lock.  Drivers don't depend on existing
locking since it's a very recent addition.

Signed-off-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
---
CC: jiri@...nulli.us

 net/core/devlink.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/core/devlink.c b/net/core/devlink.c
index 5c8a40e1a01e..475246b355f0 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -2756,7 +2756,8 @@ static const struct genl_ops devlink_nl_ops[] = {
 		.doit = devlink_nl_cmd_eswitch_set_doit,
 		.policy = devlink_nl_policy,
 		.flags = GENL_ADMIN_PERM,
-		.internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
+		.internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
+				  DEVLINK_NL_FLAG_NO_LOCK,
 	},
 	{
 		.cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
-- 
2.17.0