netdev - [PATCH 2/3] can: Propagate SO_PRIORITY of raw sockets to skbs

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Date:	Wed, 29 Jan 2014 22:11:02 +0100
From:	Marc Kleine-Budde <mkl@...gutronix.de>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, linux-can@...r.kernel.org,
	kernel@...gutronix.de, Rostislav Lisovy <lisovy@...il.com>,
	Michal Sojka <sojkam1@....cvut.cz>,
	Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [PATCH 2/3] can: Propagate SO_PRIORITY of raw sockets to skbs

From: Rostislav Lisovy <lisovy@...il.com>

This allows controlling certain queueing disciplines by setting the
socket's SO_PRIORITY option.

For example, with the default pfifo_fast queueing discipline, which
provides three priorities, socket priority TC_PRIO_CONTROL means
higher than default and TC_PRIO_BULK means lower than default.

Signed-off-by: Rostislav Lisovy <lisovy@...il.com>
Signed-off-by: Michal Sojka <sojkam1@....cvut.cz>
Acked-by: Oliver Hartkopp <socketcan@...tkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
---
 net/can/raw.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/can/raw.c b/net/can/raw.c
index 07d72d8..8be757c 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -715,6 +715,7 @@ static int raw_sendmsg(struct kiocb *iocb, struct socket *sock,
 
 	skb->dev = dev;
 	skb->sk  = sk;
+	skb->priority = sk->sk_priority;
 
 	err = can_send(skb, ro->loopback);
 
-- 
1.8.5.3

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