[NET]: Make NAPI polling independent of struct net_device objects.

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / sb1250-mac.c

diff --git a/drivers/net/sb1250-mac.c b/drivers/net/sb1250-mac.c
index e7fdcf15b5a72f88cf9961843afca4cbab4a3ecc..53845ebb649f69b796468c2304728fbf29618847 100644 (file)
--- a/drivers/net/sb1250-mac.c
+++ b/drivers/net/sb1250-mac.c
@@ -238,6 +238,7 @@ struct sbmac_softc {
         */
 
        struct net_device *sbm_dev;             /* pointer to linux device */
+       struct napi_struct napi;
        spinlock_t sbm_lock;            /* spin lock */
        struct timer_list sbm_timer;            /* for monitoring MII */
        struct net_device_stats sbm_stats;
@@ -320,7 +321,7 @@ static struct net_device_stats *sbmac_get_stats(struct net_device *dev);
 static void sbmac_set_rx_mode(struct net_device *dev);
 static int sbmac_mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 static int sbmac_close(struct net_device *dev);
-static int sbmac_poll(struct net_device *poll_dev, int *budget);
+static int sbmac_poll(struct napi_struct *napi, int budget);
 
 static int sbmac_mii_poll(struct sbmac_softc *s,int noisy);
 static int sbmac_mii_probe(struct net_device *dev);
@@ -2154,20 +2155,13 @@ static irqreturn_t sbmac_intr(int irq,void *dev_instance)
         * Transmits on channel 0
         */
 
-       if (isr & (M_MAC_INT_CHANNEL << S_MAC_TX_CH0)) {
+       if (isr & (M_MAC_INT_CHANNEL << S_MAC_TX_CH0))
                sbdma_tx_process(sc,&(sc->sbm_txdma), 0);
-#ifdef CONFIG_NETPOLL_TRAP
-               if (netpoll_trap()) {
-                       if (test_and_clear_bit(__LINK_STATE_XOFF, &dev->state))
-                               __netif_schedule(dev);
-               }
-#endif
-       }
 
        if (isr & (M_MAC_INT_CHANNEL << S_MAC_RX_CH0)) {
-               if (netif_rx_schedule_prep(dev)) {
+               if (netif_rx_schedule_prep(dev, &sc->napi)) {
                        __raw_writeq(0, sc->sbm_imr);
-                       __netif_rx_schedule(dev);
+                       __netif_rx_schedule(dev, &sc->napi);
                        /* Depend on the exit from poll to reenable intr */
                }
                else {
@@ -2470,8 +2464,8 @@ static int sbmac_init(struct net_device *dev, int idx)
        dev->do_ioctl           = sbmac_mii_ioctl;
        dev->tx_timeout         = sbmac_tx_timeout;
        dev->watchdog_timeo     = TX_TIMEOUT;
-       dev->poll               = sbmac_poll;
-       dev->weight             = 16;
+
+       netif_napi_add(dev, &sc->napi, sbmac_poll, 16);
 
        dev->change_mtu         = sb1250_change_mtu;
 #ifdef CONFIG_NET_POLL_CONTROLLER
@@ -2537,6 +2531,8 @@ static int sbmac_open(struct net_device *dev)
                return -EINVAL;
        }
 
+       napi_enable(&sc->napi);
+
        /*
         * Configure default speed
         */
@@ -2850,6 +2846,8 @@ static int sbmac_close(struct net_device *dev)
        unsigned long flags;
        int irq;
 
+       napi_disable(&sc->napi);
+
        sbmac_set_channel_state(sc,sbmac_state_off);
 
        del_timer_sync(&sc->sbm_timer);
@@ -2874,26 +2872,17 @@ static int sbmac_close(struct net_device *dev)
        return 0;
 }
 
-static int sbmac_poll(struct net_device *dev, int *budget)
+static int sbmac_poll(struct napi_struct *napi, int budget)
 {
-       int work_to_do;
+       struct sbmac_softc *sc = container_of(napi, struct sbmac_softc, napi);
+       struct net_device *dev = sc->sbm_dev;
        int work_done;
-       struct sbmac_softc *sc = netdev_priv(dev);
-
-       work_to_do = min(*budget, dev->quota);
-       work_done = sbdma_rx_process(sc, &(sc->sbm_rxdma), work_to_do, 1);
-
-       if (work_done > work_to_do)
-               printk(KERN_ERR "%s exceeded work_to_do budget=%d quota=%d work-done=%d\n",
-                      sc->sbm_dev->name, *budget, dev->quota, work_done);
 
+       work_done = sbdma_rx_process(sc, &(sc->sbm_rxdma), budget, 1);
        sbdma_tx_process(sc, &(sc->sbm_txdma), 1);
 
-       *budget -= work_done;
-       dev->quota -= work_done;
-
-       if (work_done < work_to_do) {
-               netif_rx_complete(dev);
+       if (work_done < budget) {
+               netif_rx_complete(dev, napi);
 
 #ifdef CONFIG_SBMAC_COALESCE
                __raw_writeq(((M_MAC_INT_EOP_COUNT | M_MAC_INT_EOP_TIMER) << S_MAC_TX_CH0) |
@@ -2905,7 +2894,7 @@ static int sbmac_poll(struct net_device *dev, int *budget)
 #endif
        }
 
-       return (work_done >= work_to_do);
+       return work_done;
 }
 
 #if defined(SBMAC_ETH0_HWADDR) || defined(SBMAC_ETH1_HWADDR) || defined(SBMAC_ETH2_HWADDR) || defined(SBMAC_ETH3_HWADDR)