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From: Kuniyuki Iwashima <kuniyu@amazon.com>
To: <leitao@debian.org>
Cc: <andrew+netdev@lunn.ch>, <davem@davemloft.net>,
	<dsahern@kernel.org>, <edumazet@google.com>, <horms@kernel.org>,
	<kernel-team@meta.com>, <kuba@kernel.org>, <kuniyu@amazon.co.jp>,
	<kuniyu@amazon.com>, <linux-kernel@vger.kernel.org>,
	<netdev@vger.kernel.org>, <pabeni@redhat.com>,
	<ushankar@purestorage.com>
Subject: Re: [PATCH net-next v3 1/3] net: document return value of dev_getbyhwaddr_rcu()
Date: Thu, 13 Feb 2025 16:36:46 +0900	[thread overview]
Message-ID: <20250213073646.14847-1-kuniyu@amazon.com> (raw)
In-Reply-To: <20250212-arm_fix_selftest-v3-1-72596cb77e44@debian.org>

From: Breno Leitao <leitao@debian.org>
Date: Wed, 12 Feb 2025 09:47:24 -0800
> diff --git a/net/core/dev.c b/net/core/dev.c
> index d5ab9a4b318ea4926c200ef20dae01eaafa18c6b..0b3480a125fcaa6f036ddf219c29fa362ea0cb29 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -1134,8 +1134,8 @@ int netdev_get_name(struct net *net, char *name, int ifindex)
>   *	The returned device has not had its ref count increased
>   *	and the caller must therefore be careful about locking
>   *
> + *	Return: pointer to the net_device, or NULL if not found
>   */

I noticed here we still mention RTNL and it should be removed.

Could you update the comment like this to remove RTNL and fix
mis-aligned notes ?

---8<---
diff --git a/net/core/dev.c b/net/core/dev.c
index d5ab9a4b318e..c0d6017a3840 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1123,17 +1123,17 @@ int netdev_get_name(struct net *net, char *name, int ifindex)
 }
 
 /**
- *	dev_getbyhwaddr_rcu - find a device by its hardware address
- *	@net: the applicable net namespace
- *	@type: media type of device
- *	@ha: hardware address
+ * dev_getbyhwaddr_rcu - find a device by its hardware address
+ * @net: the applicable net namespace
+ * @type: media type of device
+ * @ha: hardware address
  *
- *	Search for an interface by MAC address. Returns NULL if the device
- *	is not found or a pointer to the device.
- *	The caller must hold RCU or RTNL.
- *	The returned device has not had its ref count increased
- *	and the caller must therefore be careful about locking
+ * Search for an interface by MAC address.  The returned device has
+ * not had its ref count increased and the caller must therefore be
+ * careful about locking
  *
+ * Context: The caller must hold RCU.
+ * Return: pointer to the net_device, or NULL if not found
  */
 
 struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type,
---8<---

Thanks!

  reply	other threads:[~2025-02-13  7:37 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-12 17:47 [PATCH net-next v3 0/3] net: core: improvements to device lookup by hardware address Breno Leitao
2025-02-12 17:47 ` [PATCH net-next v3 1/3] net: document return value of dev_getbyhwaddr_rcu() Breno Leitao
2025-02-13  7:36   ` Kuniyuki Iwashima [this message]
2025-02-13  7:47     ` Kuniyuki Iwashima
2025-02-13 10:16       ` Breno Leitao
2025-02-13 10:45         ` Kuniyuki Iwashima
2025-02-12 17:47 ` [PATCH net-next v3 2/3] net: Add dev_getbyhwaddr_rtnl() helper Breno Leitao
2025-02-13  7:31   ` Kuniyuki Iwashima
2025-02-13 10:29     ` Breno Leitao
2025-02-13 10:52       ` Kuniyuki Iwashima
2025-02-13 12:29         ` Breno Leitao
2025-02-12 17:47 ` [PATCH net-next v3 3/3] arp: switch to dev_getbyhwaddr() in arp_req_set_public() Breno Leitao
2025-02-13  7:45   ` Kuniyuki Iwashima

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