netdev - Re: [PATCH net-next v2 05/11] net: protect netdev->napi_list with netdev

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Message-ID: <20250115085711.42898-1-kuniyu@amazon.com>
Date: Wed, 15 Jan 2025 17:57:11 +0900
From: Kuniyuki Iwashima <kuniyu@...zon.com>
To: <kuba@...nel.org>
CC: <andrew+netdev@...n.ch>, <davem@...emloft.net>, <edumazet@...gle.com>,
	<horms@...nel.org>, <jdamato@...tly.com>, <netdev@...r.kernel.org>,
	<pabeni@...hat.com>, Kuniyuki Iwashima <kuniyu@...zon.com>
Subject: Re: [PATCH net-next v2 05/11] net: protect netdev->napi_list with netdev_lock()

From: Jakub Kicinski <kuba@...nel.org>
Date: Tue, 14 Jan 2025 19:53:13 -0800
> Hold netdev->lock when NAPIs are getting added or removed.
> This will allow safe access to NAPI instances of a net_device
> without rtnl_lock.
> 
> Create a family of helpers which assume the lock is already taken.
> Switch iavf to them, as it makes extensive use of netdev->lock,
> already.
> 
> Reviewed-by: Joe Damato <jdamato@...tly.com>
> Reviewed-by: Eric Dumazet <edumazet@...gle.com>
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>

Reviewed-by: Kuniyuki Iwashima <kuniyu@...zon.com>