Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=72f4861ef9b1c1ca6e4abb49854698e80d3b684d
Commit: 72f4861ef9b1c1ca6e4abb49854698e80d3b684d
Parent: f65a71775cc3eb5d5d8ac4c349c8f48a7d5c7759
Author: Stephen Hemminger <[EMAIL PROTECTED]>
AuthorDate: Mon Jun 4 13:25:39 2007 -0700
Committer: Jeff Garzik <[EMAIL PROTECTED]>
CommitDate: Sun Jul 8 22:16:40 2007 -0400
b44: packet offset is constant
The receive buffer offset is constant in this driver.
Signed-off-by: Stephen Hemminger <[EMAIL PROTECTED]>
Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]>
---
drivers/net/b44.c | 30 +++++++++++++-----------------
drivers/net/b44.h | 2 --
2 files changed, 13 insertions(+), 19 deletions(-)
diff --git a/drivers/net/b44.c b/drivers/net/b44.c
index d10d31c..8fdcb69 100644
--- a/drivers/net/b44.c
+++ b/drivers/net/b44.c
@@ -15,6 +15,7 @@
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
#include <linux/etherdevice.h>
#include <linux/pci.h>
#include <linux/delay.h>
@@ -68,7 +69,8 @@
(BP)->tx_cons - (BP)->tx_prod - TX_RING_GAP(BP))
#define NEXT_TX(N) (((N) + 1) & (B44_TX_RING_SIZE - 1))
-#define RX_PKT_BUF_SZ (1536 + bp->rx_offset + 64)
+#define RX_PKT_OFFSET 30
+#define RX_PKT_BUF_SZ (1536 + RX_PKT_OFFSET + 64)
/* minimum number of free TX descriptors required to wake up TX process */
#define B44_TX_WAKEUP_THRESH (B44_TX_RING_SIZE / 4)
@@ -683,10 +685,9 @@ static int b44_alloc_rx_skb(struct b44 *bp, int src_idx,
u32 dest_idx_unmasked)
}
skb->dev = bp->dev;
- skb_reserve(skb, bp->rx_offset);
+ rh = (struct rx_header *) skb->data;
+ skb_reserve(skb, RX_PKT_OFFSET);
- rh = (struct rx_header *)
- (skb->data - bp->rx_offset);
rh->len = 0;
rh->flags = 0;
@@ -696,13 +697,13 @@ static int b44_alloc_rx_skb(struct b44 *bp, int src_idx,
u32 dest_idx_unmasked)
if (src_map != NULL)
src_map->skb = NULL;
- ctrl = (DESC_CTRL_LEN & (RX_PKT_BUF_SZ - bp->rx_offset));
+ ctrl = (DESC_CTRL_LEN & (RX_PKT_BUF_SZ - RX_PKT_OFFSET));
if (dest_idx == (B44_RX_RING_SIZE - 1))
ctrl |= DESC_CTRL_EOT;
dp = &bp->rx_ring[dest_idx];
dp->ctrl = cpu_to_le32(ctrl);
- dp->addr = cpu_to_le32((u32) mapping + bp->rx_offset + bp->dma_offset);
+ dp->addr = cpu_to_le32((u32) mapping + RX_PKT_OFFSET + bp->dma_offset);
if (bp->flags & B44_FLAG_RX_RING_HACK)
b44_sync_dma_desc_for_device(bp->pdev, bp->rx_ring_dma,
@@ -781,7 +782,7 @@ static int b44_rx(struct b44 *bp, int budget)
PCI_DMA_FROMDEVICE);
rh = (struct rx_header *) skb->data;
len = le16_to_cpu(rh->len);
- if ((len > (RX_PKT_BUF_SZ - bp->rx_offset)) ||
+ if ((len > (RX_PKT_BUF_SZ - RX_PKT_OFFSET)) ||
(rh->flags & cpu_to_le16(RX_FLAG_ERRORS))) {
drop_it:
b44_recycle_rx(bp, cons, bp->rx_prod);
@@ -813,8 +814,8 @@ static int b44_rx(struct b44 *bp, int budget)
pci_unmap_single(bp->pdev, map,
skb_size, PCI_DMA_FROMDEVICE);
/* Leave out rx_header */
- skb_put(skb, len+bp->rx_offset);
- skb_pull(skb,bp->rx_offset);
+ skb_put(skb, len + RX_PKT_OFFSET);
+ skb_pull(skb, RX_PKT_OFFSET);
} else {
struct sk_buff *copy_skb;
@@ -826,7 +827,7 @@ static int b44_rx(struct b44 *bp, int budget)
skb_reserve(copy_skb, 2);
skb_put(copy_skb, len);
/* DMA sync done above, copy just the actual packet */
- skb_copy_from_linear_data_offset(skb, bp->rx_offset,
+ skb_copy_from_linear_data_offset(skb, RX_PKT_OFFSET,
copy_skb->data, len);
skb = copy_skb;
}
@@ -1393,12 +1394,12 @@ static void b44_init_hw(struct b44 *bp, int reset_kind)
bw32(bp, B44_TX_WMARK, 56); /* XXX magic */
if (reset_kind == B44_PARTIAL_RESET) {
bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE |
- (bp->rx_offset << DMARX_CTRL_ROSHIFT)));
+ (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT)));
} else {
bw32(bp, B44_DMATX_CTRL, DMATX_CTRL_ENABLE);
bw32(bp, B44_DMATX_ADDR, bp->tx_ring_dma + bp->dma_offset);
bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE |
- (bp->rx_offset << DMARX_CTRL_ROSHIFT)));
+ (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT)));
bw32(bp, B44_DMARX_ADDR, bp->rx_ring_dma + bp->dma_offset);
bw32(bp, B44_DMARX_PTR, bp->rx_pending);
@@ -2090,11 +2091,6 @@ static int __devinit b44_get_invariants(struct b44 *bp)
bp->phy_addr = eeprom[90] & 0x1f;
- /* With this, plus the rx_header prepended to the data by the
- * hardware, we'll land the ethernet header on a 2-byte boundary.
- */
- bp->rx_offset = 30;
-
bp->imask = IMASK_DEF;
bp->core_unit = ssb_core_unit(bp);
diff --git a/drivers/net/b44.h b/drivers/net/b44.h
index 18fc133..e537e63 100644
--- a/drivers/net/b44.h
+++ b/drivers/net/b44.h
@@ -443,8 +443,6 @@ struct b44 {
#define B44_FLAG_TX_RING_HACK 0x40000000
#define B44_FLAG_WOL_ENABLE 0x80000000
- u32 rx_offset;
-
u32 msg_enable;
struct timer_list timer;
-
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