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bonding: Fix napi poll for bonding driver 

Usually the netpoll path, when preforming a napi poll can get away with just
polling all the napi instances of the configured device.  Thats not the case for
the bonding driver however, as the napi instances which may wind up getting
flagged as needing polling after the poll_controller call don't belong to the
bonded device, but rather to the slave devices.  Fix this by checking the device
in question for the IFF_MASTER flag, if set, we know we need to check the full
poll list for this cpu, rather than just the devices napi instance list.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Neil Horman 2010-10-13 16:01:51 +00:00 committed by David S. Miller
parent e843fa5088
commit 990c3d6f9c
1 changed files with 8 additions and 1 deletions
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9
net/core/netpoll.c
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@ -156,8 +156,15 @@ static void poll_napi(struct net_device *dev)
{
struct napi_struct *napi;
int budget = 16;
struct softnet_data *sd = &__get_cpu_var(softnet_data);
struct list_head *nlist;
list_for_each_entry(napi, &dev->napi_list, dev_list) {
if (dev->flags & IFF_MASTER)
nlist = &sd->poll_list;
else
nlist = &dev->napi_list;
list_for_each_entry(napi, nlist, dev_list) {
if (napi->poll_owner != smp_processor_id() &&
spin_trylock(&napi->poll_lock)) {
budget = poll_one_napi(dev->npinfo, napi, budget);