netdev - Re: tun: Use netif_receive_skb instead of netif

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Date:	Fri, 21 May 2010 11:16:32 +1000
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Neil Horman <nhorman@...driver.com>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	David Miller <davem@...emloft.net>, bmb@...enacr.com,
	tgraf@...hat.com, nhorman@...hat.com, netdev@...r.kernel.org
Subject: Re: tun: Use netif_receive_skb instead of netif_rx

On Fri, May 21, 2010 at 11:02:11AM +1000, Herbert Xu wrote:
> 
> That's what I meant above.  My patch will make tun.c to the
> classid update every time it sends out a packet.

Here it is:

tun: Update classid on packet injection

This patch makes tun update its socket classid every time we
inject a packet into the network stack.  This is so that any
updates made by the admin to the process writing packets to
tun is effected.

Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 4326520..a8a9aa8 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -525,6 +525,8 @@ static inline struct sk_buff *tun_alloc_skb(struct tun_struct *tun,
 	struct sk_buff *skb;
 	int err;
 
+	sock_update_classid(sk);
+
 	/* Under a page?  Don't bother with paged skb. */
 	if (prepad + len < PAGE_SIZE || !linear)
 		linear = len;
diff --git a/net/core/sock.c b/net/core/sock.c
index 8f7fdf8..4969bd1 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1055,6 +1055,7 @@ void sock_update_classid(struct sock *sk)
 	if (classid && classid != sk->sk_classid)
 		sk->classid = classid;
 }
+EXPORT_SYMBOL(sock_update_classid);
 #endif
 
 /**

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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