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-rw-r--r--target/linux/adm5120/patches-2.6.24/900-adm5120_switch_napi.patch144
1 files changed, 144 insertions, 0 deletions
diff --git a/target/linux/adm5120/patches-2.6.24/900-adm5120_switch_napi.patch b/target/linux/adm5120/patches-2.6.24/900-adm5120_switch_napi.patch
new file mode 100644
index 000000000..5c757a10b
--- /dev/null
+++ b/target/linux/adm5120/patches-2.6.24/900-adm5120_switch_napi.patch
@@ -0,0 +1,144 @@
+Index: linux-2.6.24/drivers/net/adm5120sw.c
+===================================================================
+--- linux-2.6.24.orig/drivers/net/adm5120sw.c
++++ linux-2.6.24/drivers/net/adm5120sw.c
+@@ -93,8 +93,14 @@
+ /* ------------------------------------------------------------------------ */
+
+ struct adm5120_if_priv {
++ struct net_device *dev;
++
+ unsigned int vlan_no;
+ unsigned int port_mask;
++
++#ifdef CONFIG_ADM5120_SWITCH_NAPI
++ struct napi_struct napi;
++#endif
+ };
+
+ struct dma_desc {
+@@ -333,7 +339,6 @@ static void sw_dump_regs(void)
+ SW_DBG("rlda: %08X\n", t);
+ }
+
+-
+ /* ------------------------------------------------------------------------ */
+
+ static inline void adm5120_rx_dma_update(struct dma_desc *desc,
+@@ -495,9 +500,11 @@ static void adm5120_switch_tx(void)
+ }
+
+ #ifdef CONFIG_ADM5120_SWITCH_NAPI
+-static int adm5120_if_poll(struct net_device *dev, int *budget)
++static int adm5120_if_poll(struct napi_struct *napi, int limit)
+ {
+- int limit = min(dev->quota, *budget);
++ struct adm5120_if_priv *priv = container_of(napi,
++ struct adm5120_if_priv, napi);
++ struct net_device *dev = priv->dev;
+ int done;
+ u32 status;
+
+@@ -509,13 +516,10 @@ static int adm5120_if_poll(struct net_de
+ SW_DBG("%s: processing RX ring\n", dev->name);
+ done = adm5120_switch_rx(limit);
+
+- *budget -= done;
+- dev->quota -= done;
+-
+ status = sw_int_status() & SWITCH_INTS_POLL;
+ if ((done < limit) && (!status)) {
+ SW_DBG("disable polling mode for %s\n", dev->name);
+- netif_rx_complete(dev);
++ netif_rx_complete(dev, napi);
+ sw_int_unmask(SWITCH_INTS_POLL);
+ return 0;
+ }
+@@ -541,10 +545,12 @@ static irqreturn_t adm5120_switch_irq(in
+
+ if (status & SWITCH_INTS_POLL) {
+ struct net_device *dev = dev_id;
++ struct adm5120_if_priv *priv = netdev_priv(dev);
++
+ sw_dump_intr_mask("poll ints", status);
+ SW_DBG("enable polling mode for %s\n", dev->name);
+ sw_int_mask(SWITCH_INTS_POLL);
+- netif_rx_schedule(dev);
++ netif_rx_schedule(dev, &priv->napi);
+ }
+ #else
+ sw_int_ack(status);
+@@ -779,12 +785,31 @@ static void adm5120_switch_set_vlan_port
+
+ /* ------------------------------------------------------------------------ */
+
++#ifdef CONFIG_ADM5120_SWITCH_NAPI
++static inline void adm5120_if_napi_enable(struct net_device *dev)
++{
++ struct adm5120_if_priv *priv = netdev_priv(dev);
++ napi_enable(&priv->napi);
++}
++
++static inline void adm5120_if_napi_disable(struct net_device *dev)
++{
++ struct adm5120_if_priv *priv = netdev_priv(dev);
++ napi_disable(&priv->napi);
++}
++#else
++static inline void adm5120_if_napi_enable(struct net_device *dev) {}
++static inline void adm5120_if_napi_disable(struct net_device *dev) {}
++#endif /* CONFIG_ADM5120_SWITCH_NAPI */
++
+ static int adm5120_if_open(struct net_device *dev)
+ {
+ u32 t;
+ int err;
+ int i;
+
++ adm5120_if_napi_enable(dev);
++
+ err = request_irq(dev->irq, adm5120_switch_irq,
+ (IRQF_SHARED | IRQF_DISABLED), dev->name, dev);
+ if (err) {
+@@ -809,6 +834,7 @@ static int adm5120_if_open(struct net_de
+ return 0;
+
+ err:
++ adm5120_if_napi_disable(dev);
+ return err;
+ }
+
+@@ -818,6 +844,7 @@ static int adm5120_if_stop(struct net_de
+ int i;
+
+ netif_stop_queue(dev);
++ adm5120_if_napi_disable(dev);
+
+ /* disable port if not assigned to other devices */
+ t = sw_read_reg(SWITCH_REG_PORT_CONF0);
+@@ -1001,6 +1028,9 @@ static struct net_device *adm5120_if_all
+ if (!dev)
+ return NULL;
+
++ priv = netdev_priv(dev);
++ priv->dev = dev;
++
+ dev->irq = ADM5120_IRQ_SWITCH;
+ dev->open = adm5120_if_open;
+ dev->hard_start_xmit = adm5120_if_hard_start_xmit;
+@@ -1010,13 +1040,11 @@ static struct net_device *adm5120_if_all
+ dev->tx_timeout = adm5120_if_tx_timeout;
+ dev->watchdog_timeo = TX_TIMEOUT;
+ dev->set_mac_address = adm5120_if_set_mac_address;
++
+ #ifdef CONFIG_ADM5120_SWITCH_NAPI
+- dev->poll = adm5120_if_poll;
+- dev->weight = 64;
++ netif_napi_add(dev, &priv->napi, adm5120_if_poll, 64);
+ #endif
+
+- SET_MODULE_OWNER(dev);
+-
+ return dev;
+ }
+