netpoll: Pass budget into poll_napi

This moves the control logic to the top level in netpoll_poll_dev
instead of having it dispersed throughout netpoll_poll_dev,
poll_napi and poll_one_napi.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index ef4f45d..147c758 100644 (file)
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -165,10 +165,9 @@ static int poll_one_napi(struct napi_struct *napi, int budget)
        return budget - work;
 }
 
-static void poll_napi(struct net_device *dev)
+static void poll_napi(struct net_device *dev, int budget)
 {
        struct napi_struct *napi;
-       int budget = 16;
 
        list_for_each_entry(napi, &dev->napi_list, dev_list) {
                if (napi->poll_owner != smp_processor_id() &&
@@ -196,6 +195,7 @@ static void netpoll_poll_dev(struct net_device *dev)
 {
        const struct net_device_ops *ops;
        struct netpoll_info *ni = rcu_dereference_bh(dev->npinfo);
+       int budget = 16;
 
        /* Don't do any rx activity if the dev_lock mutex is held
         * the dev_open/close paths use this to block netpoll activity
@@ -221,7 +221,7 @@ static void netpoll_poll_dev(struct net_device *dev)
        /* Process pending work on NIC */
        ops->ndo_poll_controller(dev);
 
-       poll_napi(dev);
+       poll_napi(dev, budget);
 
        atomic_dec(&trapped);
        ni->rx_flags &= ~NETPOLL_RX_DROP;