netdev - Re: [PATCH] libertas: skb dereferenced after netif

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Date:	Mon, 21 May 2007 10:51:38 -0400
From:	Florin Malita <fmalita@...il.com>
To:	David Miller <davem@...emloft.net>
CC:	jeff@...zik.org, dcbw@...hat.com, linville@...driver.com,
	marcelo@...ck.org, linville@...hat.com, netdev@...r.kernel.org,
	linux-wireless@...r.kernel.org
Subject: Re: [PATCH] libertas: skb dereferenced after netif_rx

David Miller wrote:
> From: Jeff Garzik <jeff@...zik.org>
> Date: Sat, 19 May 2007 21:47:00 -0400
>   
>> According to the implementation, netif_rx() can fail.
>>     
>
> It doesn't exactly "fail", but it does give return values
> which indicate RX congestion.
>   

Assuming you're referring to NET_RX_CN_*, this doesn't seem to be the 
case anymore: it appears netif_rx can only return NET_RX_SUCCESS or 
NET_RX_DROP.

The congestion level constants are hardly used at all - if they are 
left-overs, would it make sense ripping them out completely?

Either way I believe the following should be OK:


Remove inaccurate netif_rx() return value comments.

Signed-off-by: Florin Malita <fmalita@...il.com>
---

 dev.c |    3 ---
 1 file changed, 3 deletions(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index f2b6111..79f5d90 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1628,9 +1628,6 @@ DEFINE_PER_CPU(struct netif_rx_stats, netdev_rx_stat) = { 0, };
  *
  *	return values:
  *	NET_RX_SUCCESS	(no congestion)
- *	NET_RX_CN_LOW   (low congestion)
- *	NET_RX_CN_MOD   (moderate congestion)
- *	NET_RX_CN_HIGH  (high congestion)
  *	NET_RX_DROP     (packet was dropped)
  *
  */

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