netdev - [PATCH 5/7] netpoll: Add ndo_netpoll

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Message-Id: <E1OMh5B-0004Ni-DS@gondolin.me.apana.org.au>
Date:	Thu, 10 Jun 2010 22:42:05 +1000
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	"Michael S. Tsirkin" <mst@...hat.com>,
	Qianfeng Zhang <frzhang@...hat.com>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	WANG Cong <amwang@...hat.com>,
	Stephen Hemminger <shemminger@...tta.com>,
	Matt Mackall <mpm@...enic.com>
Subject: [PATCH 5/7] netpoll: Add ndo_netpoll_setup

netpoll: Add ndo_netpoll_setup

This patch adds ndo_netpoll_setup as the initialisation primitive
to complement ndo_netpoll_cleanup.

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

 include/linux/netdevice.h |    2 ++
 net/core/netpoll.c        |   10 ++++++++++
 2 files changed, 12 insertions(+)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 40291f3..619d3f1 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -728,6 +728,8 @@ struct net_device_ops {
 						        unsigned short vid);
 #ifdef CONFIG_NET_POLL_CONTROLLER
 	void                    (*ndo_poll_controller)(struct net_device *dev);
+	int			(*ndo_netpoll_setup)(struct net_device *dev,
+						     struct netpoll_info *info);
 	void			(*ndo_netpoll_cleanup)(struct net_device *dev);
 #endif
 	int			(*ndo_set_vf_mac)(struct net_device *dev,
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 9dcd767..c445896 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -729,6 +729,7 @@ int netpoll_setup(struct netpoll *np)
 	struct net_device *ndev = NULL;
 	struct in_device *in_dev;
 	struct netpoll_info *npinfo;
+	const struct net_device_ops *ops;
 	unsigned long flags;
 	int err;
 
@@ -828,6 +829,13 @@ int netpoll_setup(struct netpoll *np)
 		INIT_DELAYED_WORK(&npinfo->tx_work, queue_process);
 
 		atomic_set(&npinfo->refcnt, 1);
+
+		ops = np->dev->netdev_ops;
+		if (ops->ndo_netpoll_setup) {
+			err = ops->ndo_netpoll_setup(ndev, npinfo);
+			if (err)
+				goto free_npinfo;
+		}
 	} else {
 		npinfo = ndev->npinfo;
 		atomic_inc(&npinfo->refcnt);
@@ -848,6 +856,8 @@ int netpoll_setup(struct netpoll *np)
 
 	return 0;
 
+free_npinfo:
+	kfree(npinfo);
 unlock:
 	rtnl_unlock();
 put:
--
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