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From: Jakub Kicinski <kuba@kernel.org>
To: davem@davemloft.net
Cc: netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com,
	andrew+netdev@lunn.ch, horms@kernel.org, jdamato@fastly.com,
	Jakub Kicinski <kuba@kernel.org>
Subject: [PATCH net-next 11/11] netdev-genl: remove rtnl_lock protection from NAPI ops
Date: Mon, 13 Jan 2025 19:51:17 -0800	[thread overview]
Message-ID: <20250114035118.110297-12-kuba@kernel.org> (raw)
In-Reply-To: <20250114035118.110297-1-kuba@kernel.org>

NAPI lifetime, visibility and config are all fully under
netdev_lock protection now.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 net/core/netdev-genl.c | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/net/core/netdev-genl.c b/net/core/netdev-genl.c
index 810a446ab62c..715f85c6b62e 100644
--- a/net/core/netdev-genl.c
+++ b/net/core/netdev-genl.c
@@ -229,8 +229,6 @@ int netdev_nl_napi_get_doit(struct sk_buff *skb, struct genl_info *info)
 	if (!rsp)
 		return -ENOMEM;
 
-	rtnl_lock();
-
 	napi = netdev_napi_by_id_lock(genl_info_net(info), napi_id);
 	if (napi) {
 		err = netdev_nl_napi_fill_one(rsp, napi, info);
@@ -240,8 +238,6 @@ int netdev_nl_napi_get_doit(struct sk_buff *skb, struct genl_info *info)
 		err = -ENOENT;
 	}
 
-	rtnl_unlock();
-
 	if (err) {
 		goto err_free_msg;
 	} else if (!rsp->len) {
@@ -300,7 +296,6 @@ int netdev_nl_napi_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
 	if (info->attrs[NETDEV_A_NAPI_IFINDEX])
 		ifindex = nla_get_u32(info->attrs[NETDEV_A_NAPI_IFINDEX]);
 
-	rtnl_lock();
 	if (ifindex) {
 		netdev = netdev_get_by_index_lock(net, ifindex);
 		if (netdev) {
@@ -317,7 +312,6 @@ int netdev_nl_napi_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
 			ctx->napi_id = 0;
 		}
 	}
-	rtnl_unlock();
 
 	return err;
 }
@@ -358,8 +352,6 @@ int netdev_nl_napi_set_doit(struct sk_buff *skb, struct genl_info *info)
 
 	napi_id = nla_get_u32(info->attrs[NETDEV_A_NAPI_ID]);
 
-	rtnl_lock();
-
 	napi = netdev_napi_by_id_lock(genl_info_net(info), napi_id);
 	if (napi) {
 		err = netdev_nl_napi_set_config(napi, info);
@@ -369,8 +361,6 @@ int netdev_nl_napi_set_doit(struct sk_buff *skb, struct genl_info *info)
 		err = -ENOENT;
 	}
 
-	rtnl_unlock();
-
 	return err;
 }
 
-- 
2.47.1


  parent reply	other threads:[~2025-01-14  3:51 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-01-14  3:51 [PATCH net-next 00/11] net: use netdev->lock to protect NAPI Jakub Kicinski
2025-01-14  3:51 ` [PATCH net-next 01/11] net: add netdev_lock() / netdev_unlock() helpers Jakub Kicinski
2025-01-14 12:50   ` Eric Dumazet
2025-01-14 22:45   ` Joe Damato
2025-01-14  3:51 ` [PATCH net-next 02/11] net: add helpers for lookup and walking netdevs under netdev_lock() Jakub Kicinski
2025-01-14 13:03   ` Eric Dumazet
2025-01-14 14:45     ` Jakub Kicinski
2025-01-14 22:53   ` Joe Damato
2025-01-14 23:51     ` Jakub Kicinski
2025-01-14  3:51 ` [PATCH net-next 03/11] net: make netdev_lock() protect netdev->reg_state Jakub Kicinski
2025-01-14 13:05   ` Eric Dumazet
2025-01-14 22:57   ` Joe Damato
2025-01-14  3:51 ` [PATCH net-next 04/11] net: add netdev->up protected by netdev_lock() Jakub Kicinski
2025-01-14 13:08   ` Eric Dumazet
2025-01-14 23:09   ` Joe Damato
2025-01-14  3:51 ` [PATCH net-next 05/11] net: protect netdev->napi_list with netdev_lock() Jakub Kicinski
2025-01-14 13:09   ` Eric Dumazet
2025-01-14 23:10   ` Joe Damato
2025-01-14  3:51 ` [PATCH net-next 06/11] net: protect NAPI enablement " Jakub Kicinski
2025-01-14 13:14   ` Eric Dumazet
2025-01-14 23:00   ` Francois Romieu
2025-01-14  3:51 ` [PATCH net-next 07/11] net: make netdev netlink ops hold netdev_lock() Jakub Kicinski
2025-01-14 13:16   ` Eric Dumazet
2025-01-14  3:51 ` [PATCH net-next 08/11] net: protect threaded status of NAPI with netdev_lock() Jakub Kicinski
2025-01-14 13:19   ` Eric Dumazet
2025-01-14  3:51 ` [PATCH net-next 09/11] net: protect napi->irq " Jakub Kicinski
2025-01-14 13:20   ` Eric Dumazet
2025-01-14 23:19   ` Joe Damato
2025-01-14  3:51 ` [PATCH net-next 10/11] net: protect NAPI config fields " Jakub Kicinski
2025-01-14 13:23   ` Eric Dumazet
2025-01-14 23:20   ` Joe Damato
2025-01-14  3:51 ` Jakub Kicinski [this message]
2025-01-14 13:25   ` [PATCH net-next 11/11] netdev-genl: remove rtnl_lock protection from NAPI ops Eric Dumazet
2025-01-14 23:21   ` Joe Damato

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