netdev - Re: [PATCH, v2] net: release dst entry in dev_hard_start

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Message-ID: <4A130C0E.6000507@cosmosbay.com>
Date:	Tue, 19 May 2009 21:44:14 +0200
From:	Eric Dumazet <dada1@...mosbay.com>
To:	David Miller <davem@...emloft.net>
CC:	netdev@...r.kernel.org, jarkao2@...il.com, kaber@...sh.net
Subject: Re: [PATCH, v2] net: release dst entry in dev_hard_start_xmit()

David Miller a écrit :
> From: Eric Dumazet <dada1@...mosbay.com>
> Date: Tue, 12 May 2009 21:26:35 +0200
> 
>> [PATCH] net: release dst entry in dev_hard_start_xmit()
>  ...
>> Signed-off-by: Eric Dumazet <dada1@...mosbay.com>
> 
> Applied, thanks Eric.
> 
> Eric, please followup and double-check the pppoe paths
> that Jarek mentioned.  I never saw that fully resolved.
> 

[PATCH] ppp: unset IFF_XMIT_DST_RELEASE in ppp_setup()

Jarek pointed pppoe can call back dev_queue_xmit(), and might need
skb->dst, so its safer to unset IFF_XMIT_DST_RELEASE on ppp devices.

Signed-off-by: Eric Dumazet <dada1@...mosbay.com>
---
diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index 8ee9142..639d11b 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -1054,6 +1054,7 @@ static void ppp_setup(struct net_device *dev)
 	dev->type = ARPHRD_PPP;
 	dev->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
 	dev->features |= NETIF_F_NETNS_LOCAL;
+	dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
 }
 
 /*

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