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Message-ID: <20080710223352.GE31019@electric-eye.fr.zoreil.com>
Date: Fri, 11 Jul 2008 00:33:52 +0200
From: Francois Romieu <romieu@...zoreil.com>
To: David Miller <davem@...emloft.net>
Cc: jeff@...zik.org, netdev@...r.kernel.org,
Andy Fleming <afleming@...escale.com>
Subject: [PATCH 5/6] gianfar: delete non NAPI code from the driver.
Compile-tested only.
Signed-off-by: Francois Romieu <romieu@...zoreil.com>
---
drivers/net/Kconfig | 4 --
drivers/net/gianfar.c | 76 ++++---------------------------------------------
drivers/net/gianfar.h | 11 -------
3 files changed, 6 insertions(+), 85 deletions(-)
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index f74461b..c4841c0 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -2234,10 +2234,6 @@ config GIANFAR
This driver supports the Gigabit TSEC on the MPC83xx, MPC85xx,
and MPC86xx family of chips, and the FEC on the 8540.
-config GFAR_NAPI
- bool "Use Rx Polling (NAPI)"
- depends on GIANFAR
-
config UCC_GETH
tristate "Freescale QE Gigabit Ethernet"
depends on QUICC_ENGINE
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index 393a0f1..fa78d68 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -44,8 +44,7 @@
* happen immediately, but will wait until either a set number
* of frames or amount of time have passed). In NAPI, the
* interrupt handler will signal there is work to be done, and
- * exit. Without NAPI, the packet(s) will be handled
- * immediately. Both methods will start at the last known empty
+ * exit. This method will start at the last known empty
* descriptor, and process every subsequent descriptor until there
* are none left with data (NAPI will stop after a set number of
* packets to give time to other tasks, but will eventually
@@ -101,12 +100,6 @@
#undef BRIEF_GFAR_ERRORS
#undef VERBOSE_GFAR_ERRORS
-#ifdef CONFIG_GFAR_NAPI
-#define RECEIVE(x) netif_receive_skb(x)
-#else
-#define RECEIVE(x) netif_rx(x)
-#endif
-
const char gfar_driver_name[] = "Gianfar Ethernet";
const char gfar_driver_version[] = "1.3";
@@ -131,9 +124,7 @@ static void free_skb_resources(struct gfar_private *priv);
static void gfar_set_multi(struct net_device *dev);
static void gfar_set_hash_for_addr(struct net_device *dev, u8 *addr);
static void gfar_configure_serdes(struct net_device *dev);
-#ifdef CONFIG_GFAR_NAPI
static int gfar_poll(struct napi_struct *napi, int budget);
-#endif
#ifdef CONFIG_NET_POLL_CONTROLLER
static void gfar_netpoll(struct net_device *dev);
#endif
@@ -260,9 +251,7 @@ static int gfar_probe(struct platform_device *pdev)
dev->hard_start_xmit = gfar_start_xmit;
dev->tx_timeout = gfar_timeout;
dev->watchdog_timeo = TX_TIMEOUT;
-#ifdef CONFIG_GFAR_NAPI
netif_napi_add(dev, &priv->napi, gfar_poll, GFAR_DEV_WEIGHT);
-#endif
#ifdef CONFIG_NET_POLL_CONTROLLER
dev->poll_controller = gfar_netpoll;
#endif
@@ -363,11 +352,7 @@ static int gfar_probe(struct platform_device *pdev)
/* Even more device info helps when determining which kernel */
/* provided which set of benchmarks. */
-#ifdef CONFIG_GFAR_NAPI
printk(KERN_INFO "%s: Running with NAPI enabled\n", dev->name);
-#else
- printk(KERN_INFO "%s: Running with NAPI disabled\n", dev->name);
-#endif
printk(KERN_INFO "%s: %d/%d RX/TX BD ring size\n",
dev->name, priv->rx_ring_size, priv->tx_ring_size);
@@ -945,14 +930,10 @@ tx_skb_fail:
/* Returns 0 for success. */
static int gfar_enet_open(struct net_device *dev)
{
-#ifdef CONFIG_GFAR_NAPI
struct gfar_private *priv = netdev_priv(dev);
-#endif
int err;
-#ifdef CONFIG_GFAR_NAPI
napi_enable(&priv->napi);
-#endif
/* Initialize a bunch of registers */
init_registers(dev);
@@ -962,17 +943,13 @@ static int gfar_enet_open(struct net_device *dev)
err = init_phy(dev);
if(err) {
-#ifdef CONFIG_GFAR_NAPI
napi_disable(&priv->napi);
-#endif
return err;
}
err = startup_gfar(dev);
if (err) {
-#ifdef CONFIG_GFAR_NAPI
napi_disable(&priv->napi);
-#endif
return err;
}
@@ -1128,9 +1105,7 @@ static int gfar_close(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
-#ifdef CONFIG_GFAR_NAPI
napi_disable(&priv->napi);
-#endif
stop_gfar(dev);
@@ -1427,14 +1402,9 @@ irqreturn_t gfar_receive(int irq, void *dev_id)
{
struct net_device *dev = (struct net_device *) dev_id;
struct gfar_private *priv = netdev_priv(dev);
-#ifdef CONFIG_GFAR_NAPI
u32 tempval;
-#else
- unsigned long flags;
-#endif
/* support NAPI */
-#ifdef CONFIG_GFAR_NAPI
/* Clear IEVENT, so interrupts aren't called again
* because of the packets that have already arrived */
gfar_write(&priv->regs->ievent, IEVENT_RTX_MASK);
@@ -1451,38 +1421,10 @@ irqreturn_t gfar_receive(int irq, void *dev_id)
dev->name, gfar_read(&priv->regs->ievent),
gfar_read(&priv->regs->imask));
}
-#else
- /* Clear IEVENT, so rx interrupt isn't called again
- * because of this interrupt */
- gfar_write(&priv->regs->ievent, IEVENT_RX_MASK);
-
- spin_lock_irqsave(&priv->rxlock, flags);
- gfar_clean_rx_ring(dev, priv->rx_ring_size);
-
- /* If we are coalescing interrupts, update the timer */
- /* Otherwise, clear it */
- if (likely(priv->rxcoalescing)) {
- gfar_write(&priv->regs->rxic, 0);
- gfar_write(&priv->regs->rxic,
- mk_ic_value(priv->rxcount, priv->rxtime));
- }
-
- spin_unlock_irqrestore(&priv->rxlock, flags);
-#endif
return IRQ_HANDLED;
}
-static inline int gfar_rx_vlan(struct sk_buff *skb,
- struct vlan_group *vlgrp, unsigned short vlctl)
-{
-#ifdef CONFIG_GFAR_NAPI
- return vlan_hwaccel_receive_skb(skb, vlgrp, vlctl);
-#else
- return vlan_hwaccel_rx(skb, vlgrp, vlctl);
-#endif
-}
-
static inline void gfar_rx_checksum(struct sk_buff *skb, struct rxfcb *fcb)
{
/* If valid headers were found, and valid sums
@@ -1539,10 +1481,11 @@ static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb,
skb->protocol = eth_type_trans(skb, dev);
/* Send the packet up the stack */
- if (unlikely(priv->vlgrp && (fcb->flags & RXFCB_VLN)))
- ret = gfar_rx_vlan(skb, priv->vlgrp, fcb->vlctl);
- else
- ret = RECEIVE(skb);
+ if (unlikely(priv->vlgrp && (fcb->flags & RXFCB_VLN))) {
+ ret = vlan_hwaccel_receive_skb(skb, priv->vlgrp,
+ fcb->vlctl);
+ } else
+ ret = netif_receive_skb(skb);
if (NET_RX_DROP == ret)
priv->extra_stats.kernel_dropped++;
@@ -1629,7 +1572,6 @@ int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit)
return howmany;
}
-#ifdef CONFIG_GFAR_NAPI
static int gfar_poll(struct napi_struct *napi, int budget)
{
struct gfar_private *priv = container_of(napi, struct gfar_private, napi);
@@ -1664,7 +1606,6 @@ static int gfar_poll(struct napi_struct *napi, int budget)
return howmany;
}
-#endif
#ifdef CONFIG_NET_POLL_CONTROLLER
/*
@@ -2003,11 +1944,6 @@ static irqreturn_t gfar_error(int irq, void *dev_id)
gfar_receive(irq, dev_id);
-#ifndef CONFIG_GFAR_NAPI
- /* Clear the halt bit in RSTAT */
- gfar_write(&priv->regs->rstat, RSTAT_CLEAR_RHALT);
-#endif
-
if (netif_msg_rx_err(priv))
printk(KERN_DEBUG "%s: busy error (rstat: %x)\n",
dev->name, gfar_read(&priv->regs->rstat));
diff --git a/drivers/net/gianfar.h b/drivers/net/gianfar.h
index 27f37c8..bead71c 100644
--- a/drivers/net/gianfar.h
+++ b/drivers/net/gianfar.h
@@ -77,13 +77,8 @@ extern const char gfar_driver_name[];
extern const char gfar_driver_version[];
/* These need to be powers of 2 for this driver */
-#ifdef CONFIG_GFAR_NAPI
#define DEFAULT_TX_RING_SIZE 256
#define DEFAULT_RX_RING_SIZE 256
-#else
-#define DEFAULT_TX_RING_SIZE 64
-#define DEFAULT_RX_RING_SIZE 64
-#endif
#define GFAR_RX_MAX_RING_SIZE 256
#define GFAR_TX_MAX_RING_SIZE 256
@@ -128,14 +123,8 @@ extern const char gfar_driver_version[];
#define DEFAULT_RXTIME 21
-/* Non NAPI Case */
-#ifndef CONFIG_GFAR_NAPI
-#define DEFAULT_RX_COALESCE 1
-#define DEFAULT_RXCOUNT 16
-#else
#define DEFAULT_RX_COALESCE 0
#define DEFAULT_RXCOUNT 0
-#endif /* CONFIG_GFAR_NAPI */
#define MIIMCFG_INIT_VALUE 0x00000007
#define MIIMCFG_RESET 0x80000000
--
1.5.3.3
--
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