All of lore.kernel.org
 help / color / mirror / Atom feed
* [PATCH 0/3] forcedeth: patches
@ 2006-07-28  1:50 Stephen Hemminger
  2006-07-28  1:50 ` [PATCH 1/3] forcedeth: coding style cleanups Stephen Hemminger
                   ` (2 more replies)
  0 siblings, 3 replies; 8+ messages in thread
From: Stephen Hemminger @ 2006-07-28  1:50 UTC (permalink / raw)
  To: Ayaz Abdulla, Manfred Spraul, Jeff Garzik; +Cc: Andrew Morton, netdev

Corrected version of forcedeth patches.
 * coding style had some extra garbage
 * add patch to use little endian annotation
 * NAPI patch could get stuck in interrupt



^ permalink raw reply	[flat|nested] 8+ messages in thread

* [PATCH 1/3] forcedeth: coding style cleanups
  2006-07-28  1:50 [PATCH 0/3] forcedeth: patches Stephen Hemminger
@ 2006-07-28  1:50 ` Stephen Hemminger
  2006-07-29  5:29   ` Jeff Garzik
  2006-07-28  1:50 ` [PATCH 2/3] forcedeth: le32 annotation Stephen Hemminger
  2006-07-28  1:50 ` [PATCH 3/3] forcdeth: NAPI support (rev3) Stephen Hemminger
  2 siblings, 1 reply; 8+ messages in thread
From: Stephen Hemminger @ 2006-07-28  1:50 UTC (permalink / raw)
  To: Ayaz Abdulla, Manfred Spraul, Jeff Garzik; +Cc: Andrew Morton, netdev

[-- Attachment #1: forcedth-style.patch --]
[-- Type: text/plain, Size: 21176 bytes --]


Fix the coding style of the nForce Ethernet driver.
 - typedef's should not be used
 - variable names should not be capitialized
 - structure tags should be lower case
 - add whitespace near keywords
 - don't add paren's to switch cases
 - remove paren's from return
 - don't use __constant_ntohs unless necessary.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>

 drivers/net/forcedeth.c |  246 ++++++++++++++++++++++++------------------------
 1 file changed, 123 insertions(+), 123 deletions(-)

--- linux-2.6.orig/drivers/net/forcedeth.c	2006-07-27 17:42:03.000000000 -0700
+++ linux-2.6/drivers/net/forcedeth.c	2006-07-27 17:43:52.000000000 -0700
@@ -381,21 +381,21 @@
 
 /* Big endian: should work, but is untested */
 struct ring_desc {
-	u32 PacketBuffer;
-	u32 FlagLen;
+	u32 buf;
+	u32 flaglen;
 };
 
 struct ring_desc_ex {
-	u32 PacketBufferHigh;
-	u32 PacketBufferLow;
-	u32 TxVlan;
-	u32 FlagLen;
+	u32 bufhigh;
+	u32 buflow;
+	u32 txvlan;
+	u32 flaglen;
 };
 
-typedef union _ring_type {
+union ring_type {
 	struct ring_desc* orig;
 	struct ring_desc_ex* ex;
-} ring_type;
+};
 
 #define FLAG_MASK_V1 0xffff0000
 #define FLAG_MASK_V2 0xffffc000
@@ -713,7 +713,7 @@
 	/* rx specific fields.
 	 * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
 	 */
-	ring_type rx_ring;
+	union ring_type rx_ring;
 	unsigned int cur_rx, refill_rx;
 	struct sk_buff **rx_skbuff;
 	dma_addr_t *rx_dma;
@@ -733,7 +733,7 @@
 	/*
 	 * tx specific fields.
 	 */
-	ring_type tx_ring;
+	union ring_type tx_ring;
 	unsigned int next_tx, nic_tx;
 	struct sk_buff **tx_skbuff;
 	dma_addr_t *tx_dma;
@@ -826,13 +826,13 @@
 
 static inline u32 nv_descr_getlength(struct ring_desc *prd, u32 v)
 {
-	return le32_to_cpu(prd->FlagLen)
+	return le32_to_cpu(prd->flaglen)
 		& ((v == DESC_VER_1) ? LEN_MASK_V1 : LEN_MASK_V2);
 }
 
 static inline u32 nv_descr_getlength_ex(struct ring_desc_ex *prd, u32 v)
 {
-	return le32_to_cpu(prd->FlagLen) & LEN_MASK_V2;
+	return le32_to_cpu(prd->flaglen) & LEN_MASK_V2;
 }
 
 static int reg_delay(struct net_device *dev, int offset, u32 mask, u32 target,
@@ -885,7 +885,7 @@
 	struct fe_priv *np = get_nvpriv(dev);
 
 	if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
-		if(np->rx_ring.orig)
+		if (np->rx_ring.orig)
 			pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
 					    np->rx_ring.orig, np->ring_addr);
 	} else {
@@ -1258,14 +1258,14 @@
 		np->rx_dma[nr] = pci_map_single(np->pci_dev, skb->data,
 					skb->end-skb->data, PCI_DMA_FROMDEVICE);
 		if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
-			np->rx_ring.orig[nr].PacketBuffer = cpu_to_le32(np->rx_dma[nr]);
+			np->rx_ring.orig[nr].buf = cpu_to_le32(np->rx_dma[nr]);
 			wmb();
-			np->rx_ring.orig[nr].FlagLen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
+			np->rx_ring.orig[nr].flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
 		} else {
-			np->rx_ring.ex[nr].PacketBufferHigh = cpu_to_le64(np->rx_dma[nr]) >> 32;
-			np->rx_ring.ex[nr].PacketBufferLow = cpu_to_le64(np->rx_dma[nr]) & 0x0FFFFFFFF;
+			np->rx_ring.ex[nr].bufhigh = cpu_to_le64(np->rx_dma[nr]) >> 32;
+			np->rx_ring.ex[nr].buflow = cpu_to_le64(np->rx_dma[nr]) & 0x0FFFFFFFF;
 			wmb();
-			np->rx_ring.ex[nr].FlagLen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
+			np->rx_ring.ex[nr].flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
 		}
 		dprintk(KERN_DEBUG "%s: nv_alloc_rx: Packet %d marked as Available\n",
 					dev->name, refill_rx);
@@ -1315,9 +1315,9 @@
 	np->refill_rx = 0;
 	for (i = 0; i < np->rx_ring_size; i++)
 		if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
-			np->rx_ring.orig[i].FlagLen = 0;
+			np->rx_ring.orig[i].flaglen = 0;
 	        else
-			np->rx_ring.ex[i].FlagLen = 0;
+			np->rx_ring.ex[i].flaglen = 0;
 }
 
 static void nv_init_tx(struct net_device *dev)
@@ -1328,9 +1328,9 @@
 	np->next_tx = np->nic_tx = 0;
 	for (i = 0; i < np->tx_ring_size; i++) {
 		if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
-			np->tx_ring.orig[i].FlagLen = 0;
+			np->tx_ring.orig[i].flaglen = 0;
 	        else
-			np->tx_ring.ex[i].FlagLen = 0;
+			np->tx_ring.ex[i].flaglen = 0;
 		np->tx_skbuff[i] = NULL;
 		np->tx_dma[i] = 0;
 	}
@@ -1373,9 +1373,9 @@
 
 	for (i = 0; i < np->tx_ring_size; i++) {
 		if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
-			np->tx_ring.orig[i].FlagLen = 0;
+			np->tx_ring.orig[i].flaglen = 0;
 		else
-			np->tx_ring.ex[i].FlagLen = 0;
+			np->tx_ring.ex[i].flaglen = 0;
 		if (nv_release_txskb(dev, i))
 			np->stats.tx_dropped++;
 	}
@@ -1387,9 +1387,9 @@
 	int i;
 	for (i = 0; i < np->rx_ring_size; i++) {
 		if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
-			np->rx_ring.orig[i].FlagLen = 0;
+			np->rx_ring.orig[i].flaglen = 0;
 		else
-			np->rx_ring.ex[i].FlagLen = 0;
+			np->rx_ring.ex[i].flaglen = 0;
 		wmb();
 		if (np->rx_skbuff[i]) {
 			pci_unmap_single(np->pci_dev, np->rx_dma[i],
@@ -1450,17 +1450,17 @@
 		np->tx_dma_len[nr] = bcnt;
 
 		if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
-			np->tx_ring.orig[nr].PacketBuffer = cpu_to_le32(np->tx_dma[nr]);
-			np->tx_ring.orig[nr].FlagLen = cpu_to_le32((bcnt-1) | tx_flags);
+			np->tx_ring.orig[nr].buf = cpu_to_le32(np->tx_dma[nr]);
+			np->tx_ring.orig[nr].flaglen = cpu_to_le32((bcnt-1) | tx_flags);
 		} else {
-			np->tx_ring.ex[nr].PacketBufferHigh = cpu_to_le64(np->tx_dma[nr]) >> 32;
-			np->tx_ring.ex[nr].PacketBufferLow = cpu_to_le64(np->tx_dma[nr]) & 0x0FFFFFFFF;
-			np->tx_ring.ex[nr].FlagLen = cpu_to_le32((bcnt-1) | tx_flags);
+			np->tx_ring.ex[nr].bufhigh = cpu_to_le64(np->tx_dma[nr]) >> 32;
+			np->tx_ring.ex[nr].buflow = cpu_to_le64(np->tx_dma[nr]) & 0x0FFFFFFFF;
+			np->tx_ring.ex[nr].flaglen = cpu_to_le32((bcnt-1) | tx_flags);
 		}
 		tx_flags = np->tx_flags;
 		offset += bcnt;
 		size -= bcnt;
-	} while(size);
+	} while (size);
 
 	/* setup the fragments */
 	for (i = 0; i < fragments; i++) {
@@ -1477,12 +1477,12 @@
 			np->tx_dma_len[nr] = bcnt;
 
 			if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
-				np->tx_ring.orig[nr].PacketBuffer = cpu_to_le32(np->tx_dma[nr]);
-				np->tx_ring.orig[nr].FlagLen = cpu_to_le32((bcnt-1) | tx_flags);
+				np->tx_ring.orig[nr].buf = cpu_to_le32(np->tx_dma[nr]);
+				np->tx_ring.orig[nr].flaglen = cpu_to_le32((bcnt-1) | tx_flags);
 			} else {
-				np->tx_ring.ex[nr].PacketBufferHigh = cpu_to_le64(np->tx_dma[nr]) >> 32;
-				np->tx_ring.ex[nr].PacketBufferLow = cpu_to_le64(np->tx_dma[nr]) & 0x0FFFFFFFF;
-				np->tx_ring.ex[nr].FlagLen = cpu_to_le32((bcnt-1) | tx_flags);
+				np->tx_ring.ex[nr].bufhigh = cpu_to_le64(np->tx_dma[nr]) >> 32;
+				np->tx_ring.ex[nr].buflow = cpu_to_le64(np->tx_dma[nr]) & 0x0FFFFFFFF;
+				np->tx_ring.ex[nr].flaglen = cpu_to_le32((bcnt-1) | tx_flags);
 			}
 			offset += bcnt;
 			size -= bcnt;
@@ -1491,9 +1491,9 @@
 
 	/* set last fragment flag  */
 	if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
-		np->tx_ring.orig[nr].FlagLen |= cpu_to_le32(tx_flags_extra);
+		np->tx_ring.orig[nr].flaglen |= cpu_to_le32(tx_flags_extra);
 	} else {
-		np->tx_ring.ex[nr].FlagLen |= cpu_to_le32(tx_flags_extra);
+		np->tx_ring.ex[nr].flaglen |= cpu_to_le32(tx_flags_extra);
 	}
 
 	np->tx_skbuff[nr] = skb;
@@ -1512,10 +1512,10 @@
 
 	/* set tx flags */
 	if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
-		np->tx_ring.orig[start_nr].FlagLen |= cpu_to_le32(tx_flags | tx_flags_extra);
+		np->tx_ring.orig[start_nr].flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
 	} else {
-		np->tx_ring.ex[start_nr].TxVlan = cpu_to_le32(tx_flags_vlan);
-		np->tx_ring.ex[start_nr].FlagLen |= cpu_to_le32(tx_flags | tx_flags_extra);
+		np->tx_ring.ex[start_nr].txvlan = cpu_to_le32(tx_flags_vlan);
+		np->tx_ring.ex[start_nr].flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
 	}
 
 	dprintk(KERN_DEBUG "%s: nv_start_xmit: packet %d (entries %d) queued for transmission. tx_flags_extra: %x\n",
@@ -1547,7 +1547,7 @@
 static void nv_tx_done(struct net_device *dev)
 {
 	struct fe_priv *np = netdev_priv(dev);
-	u32 Flags;
+	u32 flags;
 	unsigned int i;
 	struct sk_buff *skb;
 
@@ -1555,22 +1555,22 @@
 		i = np->nic_tx % np->tx_ring_size;
 
 		if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
-			Flags = le32_to_cpu(np->tx_ring.orig[i].FlagLen);
+			flags = le32_to_cpu(np->tx_ring.orig[i].flaglen);
 		else
-			Flags = le32_to_cpu(np->tx_ring.ex[i].FlagLen);
+			flags = le32_to_cpu(np->tx_ring.ex[i].flaglen);
 
-		dprintk(KERN_DEBUG "%s: nv_tx_done: looking at packet %d, Flags 0x%x.\n",
-					dev->name, np->nic_tx, Flags);
-		if (Flags & NV_TX_VALID)
+		dprintk(KERN_DEBUG "%s: nv_tx_done: looking at packet %d, flags 0x%x.\n",
+					dev->name, np->nic_tx, flags);
+		if (flags & NV_TX_VALID)
 			break;
 		if (np->desc_ver == DESC_VER_1) {
-			if (Flags & NV_TX_LASTPACKET) {
+			if (flags & NV_TX_LASTPACKET) {
 				skb = np->tx_skbuff[i];
-				if (Flags & (NV_TX_RETRYERROR|NV_TX_CARRIERLOST|NV_TX_LATECOLLISION|
+				if (flags & (NV_TX_RETRYERROR|NV_TX_CARRIERLOST|NV_TX_LATECOLLISION|
 					     NV_TX_UNDERFLOW|NV_TX_ERROR)) {
-					if (Flags & NV_TX_UNDERFLOW)
+					if (flags & NV_TX_UNDERFLOW)
 						np->stats.tx_fifo_errors++;
-					if (Flags & NV_TX_CARRIERLOST)
+					if (flags & NV_TX_CARRIERLOST)
 						np->stats.tx_carrier_errors++;
 					np->stats.tx_errors++;
 				} else {
@@ -1579,13 +1579,13 @@
 				}
 			}
 		} else {
-			if (Flags & NV_TX2_LASTPACKET) {
+			if (flags & NV_TX2_LASTPACKET) {
 				skb = np->tx_skbuff[i];
-				if (Flags & (NV_TX2_RETRYERROR|NV_TX2_CARRIERLOST|NV_TX2_LATECOLLISION|
+				if (flags & (NV_TX2_RETRYERROR|NV_TX2_CARRIERLOST|NV_TX2_LATECOLLISION|
 					     NV_TX2_UNDERFLOW|NV_TX2_ERROR)) {
-					if (Flags & NV_TX2_UNDERFLOW)
+					if (flags & NV_TX2_UNDERFLOW)
 						np->stats.tx_fifo_errors++;
-					if (Flags & NV_TX2_CARRIERLOST)
+					if (flags & NV_TX2_CARRIERLOST)
 						np->stats.tx_carrier_errors++;
 					np->stats.tx_errors++;
 				} else {
@@ -1638,29 +1638,29 @@
 			if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
 				printk(KERN_INFO "%03x: %08x %08x // %08x %08x // %08x %08x // %08x %08x\n",
 				       i,
-				       le32_to_cpu(np->tx_ring.orig[i].PacketBuffer),
-				       le32_to_cpu(np->tx_ring.orig[i].FlagLen),
-				       le32_to_cpu(np->tx_ring.orig[i+1].PacketBuffer),
-				       le32_to_cpu(np->tx_ring.orig[i+1].FlagLen),
-				       le32_to_cpu(np->tx_ring.orig[i+2].PacketBuffer),
-				       le32_to_cpu(np->tx_ring.orig[i+2].FlagLen),
-				       le32_to_cpu(np->tx_ring.orig[i+3].PacketBuffer),
-				       le32_to_cpu(np->tx_ring.orig[i+3].FlagLen));
+				       le32_to_cpu(np->tx_ring.orig[i].buf),
+				       le32_to_cpu(np->tx_ring.orig[i].flaglen),
+				       le32_to_cpu(np->tx_ring.orig[i+1].buf),
+				       le32_to_cpu(np->tx_ring.orig[i+1].flaglen),
+				       le32_to_cpu(np->tx_ring.orig[i+2].buf),
+				       le32_to_cpu(np->tx_ring.orig[i+2].flaglen),
+				       le32_to_cpu(np->tx_ring.orig[i+3].buf),
+				       le32_to_cpu(np->tx_ring.orig[i+3].flaglen));
 			} else {
 				printk(KERN_INFO "%03x: %08x %08x %08x // %08x %08x %08x // %08x %08x %08x // %08x %08x %08x\n",
 				       i,
-				       le32_to_cpu(np->tx_ring.ex[i].PacketBufferHigh),
-				       le32_to_cpu(np->tx_ring.ex[i].PacketBufferLow),
-				       le32_to_cpu(np->tx_ring.ex[i].FlagLen),
-				       le32_to_cpu(np->tx_ring.ex[i+1].PacketBufferHigh),
-				       le32_to_cpu(np->tx_ring.ex[i+1].PacketBufferLow),
-				       le32_to_cpu(np->tx_ring.ex[i+1].FlagLen),
-				       le32_to_cpu(np->tx_ring.ex[i+2].PacketBufferHigh),
-				       le32_to_cpu(np->tx_ring.ex[i+2].PacketBufferLow),
-				       le32_to_cpu(np->tx_ring.ex[i+2].FlagLen),
-				       le32_to_cpu(np->tx_ring.ex[i+3].PacketBufferHigh),
-				       le32_to_cpu(np->tx_ring.ex[i+3].PacketBufferLow),
-				       le32_to_cpu(np->tx_ring.ex[i+3].FlagLen));
+				       le32_to_cpu(np->tx_ring.ex[i].bufhigh),
+				       le32_to_cpu(np->tx_ring.ex[i].buflow),
+				       le32_to_cpu(np->tx_ring.ex[i].flaglen),
+				       le32_to_cpu(np->tx_ring.ex[i+1].bufhigh),
+				       le32_to_cpu(np->tx_ring.ex[i+1].buflow),
+				       le32_to_cpu(np->tx_ring.ex[i+1].flaglen),
+				       le32_to_cpu(np->tx_ring.ex[i+2].bufhigh),
+				       le32_to_cpu(np->tx_ring.ex[i+2].buflow),
+				       le32_to_cpu(np->tx_ring.ex[i+2].flaglen),
+				       le32_to_cpu(np->tx_ring.ex[i+3].bufhigh),
+				       le32_to_cpu(np->tx_ring.ex[i+3].buflow),
+				       le32_to_cpu(np->tx_ring.ex[i+3].flaglen));
 			}
 		}
 	}
@@ -1697,7 +1697,7 @@
 	int protolen;	/* length as stored in the proto field */
 
 	/* 1) calculate len according to header */
-	if ( ((struct vlan_ethhdr *)packet)->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
+	if ( ((struct vlan_ethhdr *)packet)->h_vlan_proto == htons(ETH_P_8021Q)) {
 		protolen = ntohs( ((struct vlan_ethhdr *)packet)->h_vlan_encapsulated_proto );
 		hdrlen = VLAN_HLEN;
 	} else {
@@ -1743,7 +1743,7 @@
 static void nv_rx_process(struct net_device *dev)
 {
 	struct fe_priv *np = netdev_priv(dev);
-	u32 Flags;
+	u32 flags;
 	u32 vlanflags = 0;
 
 	for (;;) {
@@ -1755,18 +1755,18 @@
 
 		i = np->cur_rx % np->rx_ring_size;
 		if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
-			Flags = le32_to_cpu(np->rx_ring.orig[i].FlagLen);
+			flags = le32_to_cpu(np->rx_ring.orig[i].flaglen);
 			len = nv_descr_getlength(&np->rx_ring.orig[i], np->desc_ver);
 		} else {
-			Flags = le32_to_cpu(np->rx_ring.ex[i].FlagLen);
+			flags = le32_to_cpu(np->rx_ring.ex[i].flaglen);
 			len = nv_descr_getlength_ex(&np->rx_ring.ex[i], np->desc_ver);
-			vlanflags = le32_to_cpu(np->rx_ring.ex[i].PacketBufferLow);
+			vlanflags = le32_to_cpu(np->rx_ring.ex[i].buflow);
 		}
 
-		dprintk(KERN_DEBUG "%s: nv_rx_process: looking at packet %d, Flags 0x%x.\n",
-					dev->name, np->cur_rx, Flags);
+		dprintk(KERN_DEBUG "%s: nv_rx_process: looking at packet %d, flags 0x%x.\n",
+					dev->name, np->cur_rx, flags);
 
-		if (Flags & NV_RX_AVAIL)
+		if (flags & NV_RX_AVAIL)
 			break;	/* still owned by hardware, */
 
 		/*
@@ -1780,7 +1780,7 @@
 
 		{
 			int j;
-			dprintk(KERN_DEBUG "Dumping packet (flags 0x%x).",Flags);
+			dprintk(KERN_DEBUG "Dumping packet (flags 0x%x).",flags);
 			for (j=0; j<64; j++) {
 				if ((j%16) == 0)
 					dprintk("\n%03x:", j);
@@ -1790,30 +1790,30 @@
 		}
 		/* look at what we actually got: */
 		if (np->desc_ver == DESC_VER_1) {
-			if (!(Flags & NV_RX_DESCRIPTORVALID))
+			if (!(flags & NV_RX_DESCRIPTORVALID))
 				goto next_pkt;
 
-			if (Flags & NV_RX_ERROR) {
-				if (Flags & NV_RX_MISSEDFRAME) {
+			if (flags & NV_RX_ERROR) {
+				if (flags & NV_RX_MISSEDFRAME) {
 					np->stats.rx_missed_errors++;
 					np->stats.rx_errors++;
 					goto next_pkt;
 				}
-				if (Flags & (NV_RX_ERROR1|NV_RX_ERROR2|NV_RX_ERROR3)) {
+				if (flags & (NV_RX_ERROR1|NV_RX_ERROR2|NV_RX_ERROR3)) {
 					np->stats.rx_errors++;
 					goto next_pkt;
 				}
-				if (Flags & NV_RX_CRCERR) {
+				if (flags & NV_RX_CRCERR) {
 					np->stats.rx_crc_errors++;
 					np->stats.rx_errors++;
 					goto next_pkt;
 				}
-				if (Flags & NV_RX_OVERFLOW) {
+				if (flags & NV_RX_OVERFLOW) {
 					np->stats.rx_over_errors++;
 					np->stats.rx_errors++;
 					goto next_pkt;
 				}
-				if (Flags & NV_RX_ERROR4) {
+				if (flags & NV_RX_ERROR4) {
 					len = nv_getlen(dev, np->rx_skbuff[i]->data, len);
 					if (len < 0) {
 						np->stats.rx_errors++;
@@ -1821,32 +1821,32 @@
 					}
 				}
 				/* framing errors are soft errors. */
-				if (Flags & NV_RX_FRAMINGERR) {
-					if (Flags & NV_RX_SUBSTRACT1) {
+				if (flags & NV_RX_FRAMINGERR) {
+					if (flags & NV_RX_SUBSTRACT1) {
 						len--;
 					}
 				}
 			}
 		} else {
-			if (!(Flags & NV_RX2_DESCRIPTORVALID))
+			if (!(flags & NV_RX2_DESCRIPTORVALID))
 				goto next_pkt;
 
-			if (Flags & NV_RX2_ERROR) {
-				if (Flags & (NV_RX2_ERROR1|NV_RX2_ERROR2|NV_RX2_ERROR3)) {
+			if (flags & NV_RX2_ERROR) {
+				if (flags & (NV_RX2_ERROR1|NV_RX2_ERROR2|NV_RX2_ERROR3)) {
 					np->stats.rx_errors++;
 					goto next_pkt;
 				}
-				if (Flags & NV_RX2_CRCERR) {
+				if (flags & NV_RX2_CRCERR) {
 					np->stats.rx_crc_errors++;
 					np->stats.rx_errors++;
 					goto next_pkt;
 				}
-				if (Flags & NV_RX2_OVERFLOW) {
+				if (flags & NV_RX2_OVERFLOW) {
 					np->stats.rx_over_errors++;
 					np->stats.rx_errors++;
 					goto next_pkt;
 				}
-				if (Flags & NV_RX2_ERROR4) {
+				if (flags & NV_RX2_ERROR4) {
 					len = nv_getlen(dev, np->rx_skbuff[i]->data, len);
 					if (len < 0) {
 						np->stats.rx_errors++;
@@ -1854,17 +1854,17 @@
 					}
 				}
 				/* framing errors are soft errors */
-				if (Flags & NV_RX2_FRAMINGERR) {
-					if (Flags & NV_RX2_SUBSTRACT1) {
+				if (flags & NV_RX2_FRAMINGERR) {
+					if (flags & NV_RX2_SUBSTRACT1) {
 						len--;
 					}
 				}
 			}
 			if (np->txrxctl_bits & NVREG_TXRXCTL_RXCHECK) {
-				Flags &= NV_RX2_CHECKSUMMASK;
-				if (Flags == NV_RX2_CHECKSUMOK1 ||
-				    Flags == NV_RX2_CHECKSUMOK2 ||
-				    Flags == NV_RX2_CHECKSUMOK3) {
+				flags &= NV_RX2_CHECKSUMMASK;
+				if (flags == NV_RX2_CHECKSUMOK1 ||
+				    flags == NV_RX2_CHECKSUMOK2 ||
+				    flags == NV_RX2_CHECKSUMOK3) {
 					dprintk(KERN_DEBUG "%s: hw checksum hit!.\n", dev->name);
 					np->rx_skbuff[i]->ip_summed = CHECKSUM_UNNECESSARY;
 				} else {
@@ -1990,7 +1990,7 @@
 	struct fe_priv *np = netdev_priv(dev);
 	struct sockaddr *macaddr = (struct sockaddr*)addr;
 
-	if(!is_valid_ether_addr(macaddr->sa_data))
+	if (!is_valid_ether_addr(macaddr->sa_data))
 		return -EADDRNOTAVAIL;
 
 	/* synchronized against open : rtnl_lock() held by caller */
@@ -2283,20 +2283,20 @@
 			lpa_pause = lpa & (LPA_PAUSE_CAP| LPA_PAUSE_ASYM);
 
 			switch (adv_pause) {
-			case (ADVERTISE_PAUSE_CAP):
+			case ADVERTISE_PAUSE_CAP:
 				if (lpa_pause & LPA_PAUSE_CAP) {
 					pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
 					if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
 						pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
 				}
 				break;
-			case (ADVERTISE_PAUSE_ASYM):
+			case ADVERTISE_PAUSE_ASYM:
 				if (lpa_pause == (LPA_PAUSE_CAP| LPA_PAUSE_ASYM))
 				{
 					pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
 				}
 				break;
-			case (ADVERTISE_PAUSE_CAP| ADVERTISE_PAUSE_ASYM):
+			case ADVERTISE_PAUSE_CAP| ADVERTISE_PAUSE_ASYM:
 				if (lpa_pause & LPA_PAUSE_CAP)
 				{
 					pause_flags |=  NV_PAUSEFRAME_RX_ENABLE;
@@ -3245,7 +3245,7 @@
 	if (!rxtx_ring || !rx_skbuff || !rx_dma || !tx_skbuff || !tx_dma || !tx_dma_len) {
 		/* fall back to old rings */
 		if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
-			if(rxtx_ring)
+			if (rxtx_ring)
 				pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
 						    rxtx_ring, ring_addr);
 		} else {
@@ -3481,7 +3481,7 @@
 	struct fe_priv *np = netdev_priv(dev);
 
 	if (np->driver_data & DEV_HAS_STATISTICS)
-		return (sizeof(struct nv_ethtool_stats)/sizeof(u64));
+		return sizeof(struct nv_ethtool_stats)/sizeof(u64);
 	else
 		return 0;
 }
@@ -3619,7 +3619,7 @@
 	struct sk_buff *tx_skb, *rx_skb;
 	dma_addr_t test_dma_addr;
 	u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
-	u32 Flags;
+	u32 flags;
 	int len, i, pkt_len;
 	u8 *pkt_data;
 	u32 filter_flags = 0;
@@ -3663,12 +3663,12 @@
 				       tx_skb->end-tx_skb->data, PCI_DMA_FROMDEVICE);
 
 	if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
-		np->tx_ring.orig[0].PacketBuffer = cpu_to_le32(test_dma_addr);
-		np->tx_ring.orig[0].FlagLen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
+		np->tx_ring.orig[0].buf = cpu_to_le32(test_dma_addr);
+		np->tx_ring.orig[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
 	} else {
-		np->tx_ring.ex[0].PacketBufferHigh = cpu_to_le64(test_dma_addr) >> 32;
-		np->tx_ring.ex[0].PacketBufferLow = cpu_to_le64(test_dma_addr) & 0x0FFFFFFFF;
-		np->tx_ring.ex[0].FlagLen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
+		np->tx_ring.ex[0].bufhigh = cpu_to_le64(test_dma_addr) >> 32;
+		np->tx_ring.ex[0].buflow = cpu_to_le64(test_dma_addr) & 0x0FFFFFFFF;
+		np->tx_ring.ex[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
 	}
 	writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
 	pci_push(get_hwbase(dev));
@@ -3677,21 +3677,21 @@
 
 	/* check for rx of the packet */
 	if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
-		Flags = le32_to_cpu(np->rx_ring.orig[0].FlagLen);
+		flags = le32_to_cpu(np->rx_ring.orig[0].flaglen);
 		len = nv_descr_getlength(&np->rx_ring.orig[0], np->desc_ver);
 
 	} else {
-		Flags = le32_to_cpu(np->rx_ring.ex[0].FlagLen);
+		flags = le32_to_cpu(np->rx_ring.ex[0].flaglen);
 		len = nv_descr_getlength_ex(&np->rx_ring.ex[0], np->desc_ver);
 	}
 
-	if (Flags & NV_RX_AVAIL) {
+	if (flags & NV_RX_AVAIL) {
 		ret = 0;
 	} else if (np->desc_ver == DESC_VER_1) {
-		if (Flags & NV_RX_ERROR)
+		if (flags & NV_RX_ERROR)
 			ret = 0;
 	} else {
-		if (Flags & NV_RX2_ERROR) {
+		if (flags & NV_RX2_ERROR) {
 			ret = 0;
 		}
 	}

--


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [PATCH 2/3] forcedeth: le32 annotation
  2006-07-28  1:50 [PATCH 0/3] forcedeth: patches Stephen Hemminger
  2006-07-28  1:50 ` [PATCH 1/3] forcedeth: coding style cleanups Stephen Hemminger
@ 2006-07-28  1:50 ` Stephen Hemminger
  2006-07-28  1:50 ` [PATCH 3/3] forcdeth: NAPI support (rev3) Stephen Hemminger
  2 siblings, 0 replies; 8+ messages in thread
From: Stephen Hemminger @ 2006-07-28  1:50 UTC (permalink / raw)
  To: Ayaz Abdulla, Manfred Spraul, Jeff Garzik; +Cc: Andrew Morton, netdev

[-- Attachment #1: forcedeth-types.patch --]
[-- Type: text/plain, Size: 873 bytes --]

Use __le32 to indicate byte order of hardware ring elements

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>

 drivers/net/forcedeth.c |   16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

--- linux-2.6.orig/drivers/net/forcedeth.c	2006-07-27 17:43:52.000000000 -0700
+++ linux-2.6/drivers/net/forcedeth.c	2006-07-27 17:44:49.000000000 -0700
@@ -381,15 +381,15 @@
 
 /* Big endian: should work, but is untested */
 struct ring_desc {
-	u32 buf;
-	u32 flaglen;
+	__le32 buf;
+	__le32 flaglen;
 };
 
 struct ring_desc_ex {
-	u32 bufhigh;
-	u32 buflow;
-	u32 txvlan;
-	u32 flaglen;
+	__le32 bufhigh;
+	__le32 buflow;
+	__le32 txvlan;
+	__le32 flaglen;
 };
 
 union ring_type {
@@ -653,8 +653,8 @@
 };
 
 struct register_test {
-	u32 reg;
-	u32 mask;
+	__le32 reg;
+	__le32 mask;
 };
 
 static const struct register_test nv_registers_test[] = {

--


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [PATCH 3/3] forcdeth: NAPI support (rev3)
  2006-07-28  1:50 [PATCH 0/3] forcedeth: patches Stephen Hemminger
  2006-07-28  1:50 ` [PATCH 1/3] forcedeth: coding style cleanups Stephen Hemminger
  2006-07-28  1:50 ` [PATCH 2/3] forcedeth: le32 annotation Stephen Hemminger
@ 2006-07-28  1:50 ` Stephen Hemminger
  2006-07-28  2:01   ` [PATCH 4/3] forcedeth: fix NAPI hang in IRQ Stephen Hemminger
  2006-07-29  5:30   ` [PATCH 3/3] forcdeth: NAPI support (rev3) Jeff Garzik
  2 siblings, 2 replies; 8+ messages in thread
From: Stephen Hemminger @ 2006-07-28  1:50 UTC (permalink / raw)
  To: Ayaz Abdulla, Manfred Spraul, Jeff Garzik; +Cc: Andrew Morton, netdev

[-- Attachment #1: napi-forcedeth.patch --]
[-- Type: text/plain, Size: 7879 bytes --]


Revised (and tested) version of NAPI support for nForce Ethernet
driver. Fixes bug where would get stuck in irq.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>


 drivers/net/Kconfig     |   16 ++++++
 drivers/net/forcedeth.c |  125 +++++++++++++++++++++++++++++++++++++++++-------
 2 files changed, 123 insertions(+), 18 deletions(-)

--- linux-2.6.orig/drivers/net/Kconfig	2006-07-27 09:08:54.000000000 -0700
+++ linux-2.6/drivers/net/Kconfig	2006-07-27 09:15:10.000000000 -0700
@@ -1411,6 +1411,22 @@
 	  <file:Documentation/networking/net-modules.txt>.  The module will be
 	  called forcedeth.
 
+config FORCEDETH_NAPI
+	bool "Use Rx and Tx Polling (NAPI) (EXPERIMENTAL)"
+	depends on FORCEDETH && EXPERIMENTAL
+	help
+	  NAPI is a new driver API designed to reduce CPU and interrupt load
+	  when the driver is receiving lots of packets from the card. It is
+	  still somewhat experimental and thus not yet enabled by default.
+
+	  If your estimated Rx load is 10kpps or more, or if the card will be
+	  deployed on potentially unfriendly networks (e.g. in a firewall),
+	  then say Y here.
+
+	  See <file:Documentation/networking/NAPI_HOWTO.txt> for more
+	  information.
+
+	  If in doubt, say N.
 
 config CS89x0
 	tristate "CS89x0 support"
--- linux-2.6.orig/drivers/net/forcedeth.c	2006-07-27 09:14:40.000000000 -0700
+++ linux-2.6/drivers/net/forcedeth.c	2006-07-27 09:15:10.000000000 -0700
@@ -120,7 +120,11 @@
  * DEV_NEED_TIMERIRQ will not harm you on sane hardware, only generating a few
  * superfluous timer interrupts from the nic.
  */
-#define FORCEDETH_VERSION		"0.56"
+#ifdef CONFIG_FORCEDETH_NAPI
+#define FORCEDETH_VERSION		"0.57-NAPI"
+#else
+#define FORCEDETH_VERSION		"0.57"
+#endif
 #define DRV_NAME			"forcedeth"
 
 #include <linux/module.h>
@@ -957,7 +961,7 @@
 	writel(mask, base + NvRegIrqMask);
 }
 
-static void nv_disable_hw_interrupts(struct net_device *dev, u32 mask)
+static inline void nv_disable_hw_interrupts(struct net_device *dev, u32 mask)
 {
 	struct fe_priv *np = get_nvpriv(dev);
 	u8 __iomem *base = get_hwbase(dev);
@@ -1277,6 +1281,16 @@
 	return 0;
 }
 
+/* If rx bufs are exhausted called after 50ms to attempt to refresh */
+#ifdef CONFIG_FORCEDETH_NAPI
+static void nv_do_rx_refill(unsigned long data)
+{
+	struct net_device *dev = (struct net_device *) data;
+
+	/* Just reschedule NAPI rx processing */
+	netif_rx_schedule(dev);
+}
+#else
 static void nv_do_rx_refill(unsigned long data)
 {
 	struct net_device *dev = (struct net_device *) data;
@@ -1305,6 +1319,7 @@
 		enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
 	}
 }
+#endif
 
 static void nv_init_rx(struct net_device *dev)
 {
@@ -1740,13 +1755,14 @@
 	}
 }
 
-static void nv_rx_process(struct net_device *dev)
+static int nv_rx_process(struct net_device *dev, int limit)
 {
 	struct fe_priv *np = netdev_priv(dev);
 	u32 flags;
 	u32 vlanflags = 0;
+	int count;
 
-	for (;;) {
+ 	for (count = 0; count < limit; ++count) {
 		struct sk_buff *skb;
 		int len;
 		int i;
@@ -1880,17 +1896,27 @@
 		skb->protocol = eth_type_trans(skb, dev);
 		dprintk(KERN_DEBUG "%s: nv_rx_process: packet %d with %d bytes, proto %d accepted.\n",
 					dev->name, np->cur_rx, len, skb->protocol);
-		if (np->vlangrp && (vlanflags & NV_RX3_VLAN_TAG_PRESENT)) {
-			vlan_hwaccel_rx(skb, np->vlangrp, vlanflags & NV_RX3_VLAN_TAG_MASK);
-		} else {
+#ifdef CONFIG_FORCEDETH_NAPI
+		if (np->vlangrp && (vlanflags & NV_RX3_VLAN_TAG_PRESENT))
+			vlan_hwaccel_receive_skb(skb, np->vlangrp,
+						 vlanflags & NV_RX3_VLAN_TAG_MASK);
+		else
+			netif_receive_skb(skb);
+#else
+		if (np->vlangrp && (vlanflags & NV_RX3_VLAN_TAG_PRESENT))
+			vlan_hwaccel_rx(skb, np->vlangrp,
+					vlanflags & NV_RX3_VLAN_TAG_MASK);
+		else
 			netif_rx(skb);
-		}
+#endif
 		dev->last_rx = jiffies;
 		np->stats.rx_packets++;
 		np->stats.rx_bytes += len;
 next_pkt:
 		np->cur_rx++;
 	}
+
+	return count;
 }
 
 static void set_bufsize(struct net_device *dev)
@@ -2376,14 +2402,6 @@
 		nv_tx_done(dev);
 		spin_unlock(&np->lock);
 
-		nv_rx_process(dev);
-		if (nv_alloc_rx(dev)) {
-			spin_lock(&np->lock);
-			if (!np->in_shutdown)
-				mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
-			spin_unlock(&np->lock);
-		}
-
 		if (events & NVREG_IRQ_LINK) {
 			spin_lock(&np->lock);
 			nv_link_irq(dev);
@@ -2403,6 +2421,20 @@
 			printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
 						dev->name, events);
 		}
+#ifdef CONFIG_FORCEDETH_NAPI
+		if (netif_rx_schedule_prep(dev)) {
+			__netif_rx_schedule(dev);
+			nv_disable_hw_interrupts(dev, NVREG_IRQ_RX_ALL);
+		}
+#else
+		nv_rx_process(dev, dev->weight);
+		if (nv_alloc_rx(dev)) {
+			spin_lock(&np->lock);
+			if (!np->in_shutdown)
+				mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
+			spin_unlock(&np->lock);
+		}
+#endif
 		if (i > max_interrupt_work) {
 			spin_lock(&np->lock);
 			/* disable interrupts on the nic */
@@ -2474,6 +2506,54 @@
 	return IRQ_RETVAL(i);
 }
 
+#ifdef CONFIG_FORCEDETH_NAPI
+static int nv_napi_poll(struct net_device *dev, int *budget)
+{
+	int pkts, limit = min(*budget, dev->quota);
+	struct fe_priv *np = netdev_priv(dev);
+
+	pkts = nv_rx_process(dev, limit);
+
+	if (nv_alloc_rx(dev)) {
+		spin_lock_irq(&np->lock);
+		if (!np->in_shutdown)
+			mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
+		spin_unlock_irq(&np->lock);
+	}
+
+	if (pkts < limit) {
+		/* all done, no more packets present */
+		netif_rx_complete(dev);
+		nv_enable_hw_interrupts(dev, np->irqmask);
+		return 0;
+	} else {
+		/* used up our quantum, so reschedule */
+		dev->quota -= pkts;
+		*budget -= pkts;
+		return 1;
+	}
+}
+#endif
+
+#ifdef CONFIG_FORCEDETH_NAPI
+static irqreturn_t nv_nic_irq_rx(int foo, void *data, struct pt_regs *regs)
+{
+	struct net_device *dev = (struct net_device *) data;
+	u8 __iomem *base = get_hwbase(dev);
+	u32 events;
+
+	events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
+	writel(NVREG_IRQ_RX_ALL, base + NvRegMSIXIrqStatus);
+
+	if (events) {
+		netif_rx_schedule(dev);
+		/* disable receive interrupts on the nic */
+		writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
+		pci_push(base);
+	}
+	return IRQ_HANDLED;
+}
+#else
 static irqreturn_t nv_nic_irq_rx(int foo, void *data, struct pt_regs *regs)
 {
 	struct net_device *dev = (struct net_device *) data;
@@ -2492,7 +2572,7 @@
 		if (!(events & np->irqmask))
 			break;
 
-		nv_rx_process(dev);
+		nv_rx_process(dev, dev->weight);
 		if (nv_alloc_rx(dev)) {
 			spin_lock_irq(&np->lock);
 			if (!np->in_shutdown)
@@ -2514,12 +2594,12 @@
 			spin_unlock_irq(&np->lock);
 			break;
 		}
-
 	}
 	dprintk(KERN_DEBUG "%s: nv_nic_irq_rx completed\n", dev->name);
 
 	return IRQ_RETVAL(i);
 }
+#endif
 
 static irqreturn_t nv_nic_irq_other(int foo, void *data, struct pt_regs *regs)
 {
@@ -3753,6 +3833,7 @@
 	if (test->flags & ETH_TEST_FL_OFFLINE) {
 		if (netif_running(dev)) {
 			netif_stop_queue(dev);
+			netif_poll_disable(dev);
 			netif_tx_lock_bh(dev);
 			spin_lock_irq(&np->lock);
 			nv_disable_hw_interrupts(dev, np->irqmask);
@@ -3811,6 +3892,7 @@
 			nv_start_rx(dev);
 			nv_start_tx(dev);
 			netif_start_queue(dev);
+			netif_poll_enable(dev);
 			nv_enable_hw_interrupts(dev, np->irqmask);
 		}
 	}
@@ -4020,6 +4102,8 @@
 	nv_start_rx(dev);
 	nv_start_tx(dev);
 	netif_start_queue(dev);
+	netif_poll_enable(dev);
+
 	if (ret) {
 		netif_carrier_on(dev);
 	} else {
@@ -4049,6 +4133,7 @@
 	spin_lock_irq(&np->lock);
 	np->in_shutdown = 1;
 	spin_unlock_irq(&np->lock);
+	netif_poll_disable(dev);
 	synchronize_irq(dev->irq);
 
 	del_timer_sync(&np->oom_kick);
@@ -4270,6 +4355,10 @@
 #ifdef CONFIG_NET_POLL_CONTROLLER
 	dev->poll_controller = nv_poll_controller;
 #endif
+	dev->weight = 64;
+#ifdef CONFIG_FORCEDETH_NAPI
+	dev->poll = nv_napi_poll;
+#endif
 	SET_ETHTOOL_OPS(dev, &ops);
 	dev->tx_timeout = nv_tx_timeout;
 	dev->watchdog_timeo = NV_WATCHDOG_TIMEO;

--


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [PATCH 4/3] forcedeth: fix NAPI hang in IRQ.
  2006-07-28  1:50 ` [PATCH 3/3] forcdeth: NAPI support (rev3) Stephen Hemminger
@ 2006-07-28  2:01   ` Stephen Hemminger
  2006-07-29  4:10     ` Andrew Morton
  2006-07-29  5:30   ` [PATCH 3/3] forcdeth: NAPI support (rev3) Jeff Garzik
  1 sibling, 1 reply; 8+ messages in thread
From: Stephen Hemminger @ 2006-07-28  2:01 UTC (permalink / raw)
  To: Stephen Hemminger
  Cc: Ayaz Abdulla, Manfred Spraul, Jeff Garzik, Andrew Morton, netdev

Fix for NAPI hanging in interrupt. With NAPI, we only need one
iteration over the IRQ.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>

--- linux-2.6.orig/drivers/net/forcedeth.c	2006-07-27
18:58:21.000000000 -0700 +++ linux-2.6/drivers/net/forcedeth.c
2006-07-27 18:57:31.000000000 -0700 @@ -2422,10 +2422,11 @@
 						dev->name, events);
 		}
 #ifdef CONFIG_FORCEDETH_NAPI
-		if (netif_rx_schedule_prep(dev)) {
-			__netif_rx_schedule(dev);
+		if (events & NVREG_IRQ_RX_ALL) {
+			netif_rx_schedule(dev);
 			nv_disable_hw_interrupts(dev,
NVREG_IRQ_RX_ALL); }
+		return IRQ_HANDLED;
 #else
 		nv_rx_process(dev, dev->weight);
 		if (nv_alloc_rx(dev)) {
@@ -2434,7 +2435,6 @@
 				mod_timer(&np->oom_kick, jiffies +
OOM_REFILL); spin_unlock(&np->lock);
 		}
-#endif
 		if (i > max_interrupt_work) {
 			spin_lock(&np->lock);
 			/* disable interrupts on the nic */
@@ -2452,7 +2452,7 @@
 			spin_unlock(&np->lock);
 			break;
 		}
-
+#endif
 	}
 	dprintk(KERN_DEBUG "%s: nv_nic_irq completed\n", dev->name);
 

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH 4/3] forcedeth: fix NAPI hang in IRQ.
  2006-07-28  2:01   ` [PATCH 4/3] forcedeth: fix NAPI hang in IRQ Stephen Hemminger
@ 2006-07-29  4:10     ` Andrew Morton
  0 siblings, 0 replies; 8+ messages in thread
From: Andrew Morton @ 2006-07-29  4:10 UTC (permalink / raw)
  To: Stephen Hemminger; +Cc: shemminger, aabdulla, manfred, jgarzik, netdev

On Thu, 27 Jul 2006 19:01:14 -0700
Stephen Hemminger <shemminger@osdl.org> wrote:

> Fix for NAPI hanging in interrupt. With NAPI, we only need one
> iteration over the IRQ.
> 
> Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
> 
> --- linux-2.6.orig/drivers/net/forcedeth.c	2006-07-27
> 18:58:21.000000000 -0700 +++ linux-2.6/drivers/net/forcedeth.c
> 2006-07-27 18:57:31.000000000 -0700 @@ -2422,10 +2422,11 @@
>  						dev->name, events);
>  		}
>  #ifdef CONFIG_FORCEDETH_NAPI
> -		if (netif_rx_schedule_prep(dev)) {
> -			__netif_rx_schedule(dev);
> +		if (events & NVREG_IRQ_RX_ALL) {
> +			netif_rx_schedule(dev);
>  			nv_disable_hw_interrupts(dev,
> NVREG_IRQ_RX_ALL); }
> +		return IRQ_HANDLED;
>  #else
>  		nv_rx_process(dev, dev->weight);
>  		if (nv_alloc_rx(dev)) {
> @@ -2434,7 +2435,6 @@
>  				mod_timer(&np->oom_kick, jiffies +
> OOM_REFILL); spin_unlock(&np->lock);
>  		}
> -#endif
>  		if (i > max_interrupt_work) {
>  			spin_lock(&np->lock);
>  			/* disable interrupts on the nic */
> @@ -2452,7 +2452,7 @@
>  			spin_unlock(&np->lock);
>  			break;
>  		}
> -
> +#endif
>  	}
>  	dprintk(KERN_DEBUG "%s: nv_nic_irq completed\n", dev->name);
>  

What on earth happened to that?

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH 1/3] forcedeth: coding style cleanups
  2006-07-28  1:50 ` [PATCH 1/3] forcedeth: coding style cleanups Stephen Hemminger
@ 2006-07-29  5:29   ` Jeff Garzik
  0 siblings, 0 replies; 8+ messages in thread
From: Jeff Garzik @ 2006-07-29  5:29 UTC (permalink / raw)
  To: Stephen Hemminger; +Cc: Ayaz Abdulla, Manfred Spraul, Andrew Morton, netdev

applied patches 1-2


^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH 3/3] forcdeth: NAPI support (rev3)
  2006-07-28  1:50 ` [PATCH 3/3] forcdeth: NAPI support (rev3) Stephen Hemminger
  2006-07-28  2:01   ` [PATCH 4/3] forcedeth: fix NAPI hang in IRQ Stephen Hemminger
@ 2006-07-29  5:30   ` Jeff Garzik
  1 sibling, 0 replies; 8+ messages in thread
From: Jeff Garzik @ 2006-07-29  5:30 UTC (permalink / raw)
  To: Stephen Hemminger; +Cc: Ayaz Abdulla, Manfred Spraul, Andrew Morton, netdev

Previous patches in this series were applied to netdev-2.6.git#upstream.

Can you resend this one + patch #4 as a single patch?

	Jeff




^ permalink raw reply	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2006-07-29  5:30 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2006-07-28  1:50 [PATCH 0/3] forcedeth: patches Stephen Hemminger
2006-07-28  1:50 ` [PATCH 1/3] forcedeth: coding style cleanups Stephen Hemminger
2006-07-29  5:29   ` Jeff Garzik
2006-07-28  1:50 ` [PATCH 2/3] forcedeth: le32 annotation Stephen Hemminger
2006-07-28  1:50 ` [PATCH 3/3] forcdeth: NAPI support (rev3) Stephen Hemminger
2006-07-28  2:01   ` [PATCH 4/3] forcedeth: fix NAPI hang in IRQ Stephen Hemminger
2006-07-29  4:10     ` Andrew Morton
2006-07-29  5:30   ` [PATCH 3/3] forcdeth: NAPI support (rev3) Jeff Garzik

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.