mirror of https://github.com/hak5/openwrt.git
95 lines
3.0 KiB
Diff
95 lines
3.0 KiB
Diff
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diff -ur linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
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--- linux.old/drivers/net/via-rhine.c 2006-11-29 22:57:37.000000000 +0100
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+++ linux.dev/drivers/net/via-rhine.c 2006-12-14 03:39:01.000000000 +0100
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@@ -33,6 +33,7 @@
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#define DRV_VERSION "1.4.3"
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#define DRV_RELDATE "2007-03-06"
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+#define PKT_ALIGN 1
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/* A few user-configurable values.
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These may be modified when a driver module is loaded. */
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@@ -40,9 +41,11 @@
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static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */
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static int max_interrupt_work = 20;
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+#ifndef PKT_ALIGN
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/* Set the copy breakpoint for the copy-only-tiny-frames scheme.
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Setting to > 1518 effectively disables this feature. */
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static int rx_copybreak;
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+#endif
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/* Work-around for broken BIOSes: they are unable to get the chip back out of
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power state D3 so PXE booting fails. bootparam(7): via-rhine.avoid_D3=1 */
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@@ -105,6 +108,7 @@
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/uaccess.h>
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+#include <asm/unaligned.h>
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#include <linux/dmi.h>
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/* These identify the driver base version and may not be removed. */
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@@ -124,12 +128,14 @@
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module_param(max_interrupt_work, int, 0);
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module_param(debug, int, 0);
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-module_param(rx_copybreak, int, 0);
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module_param(avoid_D3, bool, 0);
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MODULE_PARM_DESC(max_interrupt_work, "VIA Rhine maximum events handled per interrupt");
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MODULE_PARM_DESC(debug, "VIA Rhine debug level (0-7)");
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-MODULE_PARM_DESC(rx_copybreak, "VIA Rhine copy breakpoint for copy-only-tiny-frames");
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MODULE_PARM_DESC(avoid_D3, "Avoid power state D3 (work-around for broken BIOSes)");
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+#ifndef PKT_ALIGN
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+module_param(rx_copybreak, int, 0);
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+MODULE_PARM_DESC(rx_copybreak, "VIA Rhine copy breakpoint for copy-only-tiny-frames");
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+#endif
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/*
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Theory of Operation
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@@ -924,7 +930,7 @@
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/* Fill in the Rx buffers. Handle allocation failure gracefully. */
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for (i = 0; i < RX_RING_SIZE; i++) {
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- struct sk_buff *skb = dev_alloc_skb(rp->rx_buf_sz);
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+ struct sk_buff *skb = dev_alloc_skb(rp->rx_buf_sz + 4);
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rp->rx_skbuff[i] = skb;
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if (skb == NULL)
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break;
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@@ -1482,6 +1488,9 @@
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/* Length should omit the CRC */
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int pkt_len = data_size - 4;
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+#ifdef PKT_ALIGN
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+ int i;
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+#else
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/* Check if the packet is long enough to accept without
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copying to a minimally-sized skbuff. */
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if (pkt_len < rx_copybreak &&
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@@ -1501,7 +1510,9 @@
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rp->rx_skbuff_dma[entry],
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rp->rx_buf_sz,
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PCI_DMA_FROMDEVICE);
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- } else {
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+ } else
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+#endif
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+ {
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skb = rp->rx_skbuff[entry];
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if (skb == NULL) {
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printk(KERN_ERR "%s: Inconsistent Rx "
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@@ -1515,6 +1526,14 @@
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rp->rx_skbuff_dma[entry],
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rp->rx_buf_sz,
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PCI_DMA_FROMDEVICE);
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+#ifdef PKT_ALIGN
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+ /* align the data to the ip header - should be faster than copying the entire packet */
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+ for (i = pkt_len - (pkt_len % 4); i >= 0; i -= 4) {
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+ put_unaligned(*((u32 *) (skb->data + i)), (u32 *) (skb->data + i + 2));
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+ }
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+ skb->data += 2;
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+ skb->tail += 2;
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+#endif
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}
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skb->protocol = eth_type_trans(skb, dev);
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#ifdef CONFIG_VIA_RHINE_NAPI
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