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bridge: make bridge support netpoll

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Based on the previous patch, make bridge support netpoll by:

1) implement the 2 methods to support netpoll for bridge;

2) modify netpoll during forwarding packets via bridge;

3) disable netpoll support of bridge when a netpoll-unabled device
   is added to bridge;

4) enable netpoll support when all underlying devices support netpoll.

Cc: David Miller <davem@davemloft.net>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Stephen Hemminger <shemminger@linux-foundation.org>
Cc: Matt Mackall <mpm@selenic.com>
Signed-off-by: WANG Cong <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
WANG Cong
2010-05-06 00:48:24 -07:00
committed by David S. Miller
parent 0e34e93177
commit c06ee961d3
4 changed files with 108 additions and 1 deletions
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25
net/bridge/br_if.c
View File

@@ -13,6 +13,7 @@
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/netpoll.h>
#include <linux/ethtool.h>
#include <linux/if_arp.h>
#include <linux/module.h>
@@ -153,6 +154,14 @@ static void del_nbp(struct net_bridge_port *p)
kobject_uevent(&p->kobj, KOBJ_REMOVE);
kobject_del(&p->kobj);
#ifdef CONFIG_NET_POLL_CONTROLLER
if (br_devices_support_netpoll(br))
br->dev->priv_flags &= ~IFF_DISABLE_NETPOLL;
if (dev->netdev_ops->ndo_netpoll_cleanup)
dev->netdev_ops->ndo_netpoll_cleanup(dev);
else
dev->npinfo = NULL;
#endif
call_rcu(&p->rcu, destroy_nbp_rcu);
}
@@ -165,6 +174,8 @@ static void del_br(struct net_bridge *br, struct list_head *head)
del_nbp(p);
}
br_netpoll_cleanup(br->dev);
del_timer_sync(&br->gc_timer);
br_sysfs_delbr(br->dev);
@@ -444,6 +455,20 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
kobject_uevent(&p->kobj, KOBJ_ADD);
#ifdef CONFIG_NET_POLL_CONTROLLER
if (br_devices_support_netpoll(br)) {
br->dev->priv_flags &= ~IFF_DISABLE_NETPOLL;
if (br->dev->npinfo)
dev->npinfo = br->dev->npinfo;
} else if (!(br->dev->priv_flags & IFF_DISABLE_NETPOLL)) {
br->dev->priv_flags |= IFF_DISABLE_NETPOLL;
printk(KERN_INFO "New device %s does not support netpoll\n",
dev->name);
printk(KERN_INFO "Disabling netpoll for %s\n",
br->dev->name);
}
#endif
return 0;
err2:
br_fdb_delete_by_port(br, p, 1);