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Date: Tue, 19 Jun 2007 06:02:52 -0400 (EDT)
From: Veena Parat <Veena.Parat@...erion.com>
To: netdev@...r.kernel.org, jeff@...zik.org
cc: Leonid.Grossman@...erion.com, ramkrishna.vepa@...erion.com,
santosh.rastapur@...erion.com, Sivakumar.Subramani@...erion.com,
sreenivasa.honnur@...erion.com, Alicia.Pena@...erion.com,
sriram.rapuru@...erion.com
Subject: [PATCH 2.6.22 3/4]S2IO: Removing 3 buffer mode support from the
driver
Removed 3 buffer mode support from driver - unused feature
Signed-off-by: Veena Parat <veena.parat@...erion.com>
---
diff -urpN patch_2/drivers/net/s2io.c patch_3/drivers/net/s2io.c
--- patch_2/drivers/net/s2io.c 2007-05-21 15:15:11.000000000 +0530
+++ patch_3/drivers/net/s2io.c 2007-06-07 12:11:27.000000000 +0530
@@ -32,7 +32,7 @@
* rx_ring_sz: This defines the number of receive blocks each ring can have.
* This is also an array of size 8.
* rx_ring_mode: This defines the operation mode of all 8 rings. The valid
- * values are 1, 2 and 3.
+ * values are 1 and 2.
* tx_fifo_num: This defines the number of Tx FIFOs thats used int the driver.
* tx_fifo_len: This too is an array of 8. Each element defines the number of
* Tx descriptors that can be associated with each corresponding FIFO.
@@ -90,8 +90,8 @@
static char s2io_driver_name[] = "Neterion";
static char s2io_driver_version[] = DRV_VERSION;
-static int rxd_size[4] = {32,48,48,64};
-static int rxd_count[4] = {127,85,85,63};
+static int rxd_size[4] = {32,48,64};
+static int rxd_count[4] = {127,85,63};
static inline int RXD_IS_UP2DT(struct RxD_t *rxdp)
{
@@ -706,7 +706,7 @@ static int init_shared_mem(struct s2io_n
(u64) tmp_p_addr_next;
}
}
- if (nic->rxd_mode >= RXD_MODE_3A) {
+ if (nic->rxd_mode == RXD_MODE_3B) {
/*
* Allocation of Storages for buffer addresses in 2BUFF mode
* and the buffers as well.
@@ -873,7 +873,7 @@ static void free_shared_mem(struct s2io_
}
}
- if (nic->rxd_mode >= RXD_MODE_3A) {
+ if (nic->rxd_mode == RXD_MODE_3B) {
/* Freeing buffer storage addresses in 2BUFF mode. */
for (i = 0; i < config->rx_ring_num; i++) {
blk_cnt = config->rx_cfg[i].num_rxd /
@@ -894,8 +894,9 @@ static void free_shared_mem(struct s2io_
k++;
}
kfree(mac_control->rings[i].ba[j]);
- nic->mac_control.stats_info->sw_stat.mem_freed += (sizeof(struct buffAdd) *
- (rxd_count[nic->rxd_mode] + 1));
+ nic->mac_control.stats_info->sw_stat.mem_freed
+ += (sizeof(struct buffAdd) *
+ (rxd_count[nic->rxd_mode] + 1));
}
kfree(mac_control->rings[i].ba);
nic->mac_control.stats_info->sw_stat.mem_freed +=
@@ -2236,58 +2237,6 @@ static void stop_nic(struct s2io_nic *ni
writeq(val64, &bar0->adapter_control);
}
-static int fill_rxd_3buf(struct s2io_nic *nic, struct RxD_t *rxdp, struct \
- sk_buff *skb)
-{
- struct net_device *dev = nic->dev;
- struct sk_buff *frag_list;
- void *tmp;
-
- /* Buffer-1 receives L3/L4 headers */
- ((struct RxD3*)rxdp)->Buffer1_ptr = pci_map_single
- (nic->pdev, skb->data, l3l4hdr_size + 4,
- PCI_DMA_FROMDEVICE);
-
- if ((((struct RxD3*)rxdp)->Buffer1_ptr == 0) ||
- (((struct RxD3*)rxdp)->Buffer1_ptr == DMA_ERROR_CODE)) {
- nic->mac_control.stats_info->sw_stat.pci_map_fail_cnt++;
- return -ENOMEM;
- }
-
- /* skb_shinfo(skb)->frag_list will have L4 data payload */
- skb_shinfo(skb)->frag_list = dev_alloc_skb(dev->mtu + ALIGN_SIZE);
- if (skb_shinfo(skb)->frag_list == NULL) {
- nic->mac_control.stats_info->sw_stat.mem_alloc_fail_cnt++;
- pci_unmap_single
- (nic->pdev, (dma_addr_t)skb->data, l3l4hdr_size + 4,
- PCI_DMA_FROMDEVICE);
- DBG_PRINT(INFO_DBG, "%s: dev_alloc_skb failed\n ", dev->name);
- return -ENOMEM ;
- }
- frag_list = skb_shinfo(skb)->frag_list;
- skb->truesize += frag_list->truesize;
- nic->mac_control.stats_info->sw_stat.mem_allocated
- += frag_list->truesize;
- frag_list->next = NULL;
- tmp = (void *)ALIGN((long)frag_list->data, ALIGN_SIZE + 1);
- frag_list->data = tmp;
- skb_reset_tail_pointer(frag_list);
-
- /* Buffer-2 receives L4 data payload */
- ((struct RxD3*)rxdp)->Buffer2_ptr = pci_map_single(nic->pdev,
- frag_list->data, dev->mtu,
- PCI_DMA_FROMDEVICE);
- if ((((struct RxD3*)rxdp)->Buffer2_ptr == 0) ||
- (((struct RxD3*)rxdp)->Buffer2_ptr == DMA_ERROR_CODE)) {
- nic->mac_control.stats_info->sw_stat.pci_map_fail_cnt++;
- return -ENOMEM;
- }
- rxdp->Control_2 |= SET_BUFFER1_SIZE_3(l3l4hdr_size + 4);
- rxdp->Control_2 |= SET_BUFFER2_SIZE_3(dev->mtu);
-
- return SUCCESS;
-}
-
/**
* fill_rx_buffers - Allocates the Rx side skbs
* @nic: device private variable
@@ -2296,10 +2245,9 @@ static int fill_rxd_3buf(struct s2io_nic
* The function allocates Rx side skbs and puts the physical
* address of these buffers into the RxD buffer pointers, so that the NIC
* can DMA the received frame into these locations.
- * The NIC supports 3 receive modes, viz
+ * The NIC supports 2 receive modes, viz
* 1. single buffer,
- * 2. three buffer and
- * 3. Five buffer modes.
+ * 2. Two buffer modes.
* Each mode defines how many fragments the received frame will be split
* up into by the NIC. The frame is split into L3 header, L4 Header,
* L4 payload in three buffer mode and in 5 buffer mode, L4 payload itself
@@ -2376,7 +2324,7 @@ static int fill_rx_buffers(struct s2io_n
(block_no * (rxd_count[nic->rxd_mode] + 1)) + off;
}
if ((rxdp->Control_1 & RXD_OWN_XENA) &&
- ((nic->rxd_mode >= RXD_MODE_3A) &&
+ ((nic->rxd_mode == RXD_MODE_3B) &&
(rxdp->Control_2 & BIT(0)))) {
mac_control->rings[ring_no].rx_curr_put_info.
offset = off;
@@ -2427,16 +2375,12 @@ static int fill_rx_buffers(struct s2io_n
rxdp->Control_2 =
SET_BUFFER0_SIZE_1(size - NET_IP_ALIGN);
- } else if (nic->rxd_mode >= RXD_MODE_3A) {
+ } else if (nic->rxd_mode == RXD_MODE_3B) {
/*
- * 2 or 3 buffer mode -
- * Both 2 buffer mode and 3 buffer mode provides 128
+ * 2 buffer mode -
+ * 2 buffer mode provides 128
* byte aligned receive buffers.
*
- * 3 buffer mode provides header separation where in
- * skb->data will have L3/L4 headers where as
- * skb_shinfo(skb)->frag_list will have the L4 data
- * payload
*/
/* save buffer pointers to avoid frequent dma mapping */
@@ -2512,19 +2456,6 @@ static int fill_rx_buffers(struct s2io_n
rxdp->Control_2 |= SET_BUFFER1_SIZE_3(1);
rxdp->Control_2 |= SET_BUFFER2_SIZE_3
(dev->mtu + 4);
- } else {
- /* 3 buffer mode */
- if (fill_rxd_3buf(nic, rxdp, skb) == -ENOMEM) {
- nic->mac_control.stats_info->sw_stat.\
- mem_freed += skb->truesize;
- dev_kfree_skb_irq(skb);
- if (first_rxdp) {
- wmb();
- first_rxdp->Control_1 |=
- RXD_OWN_XENA;
- }
- return -ENOMEM ;
- }
}
rxdp->Control_2 |= BIT(0);
}
@@ -2579,43 +2510,35 @@ static void free_rxd_blk(struct s2io_nic
if (!skb) {
continue;
}
- if (sp->rxd_mode == RXD_MODE_1) {
- pci_unmap_single(sp->pdev, (dma_addr_t)
- ((struct RxD1*)rxdp)->Buffer0_ptr,
- dev->mtu +
- HEADER_ETHERNET_II_802_3_SIZE
- + HEADER_802_2_SIZE +
- HEADER_SNAP_SIZE,
- PCI_DMA_FROMDEVICE);
- memset(rxdp, 0, sizeof(struct RxD1));
- } else if(sp->rxd_mode == RXD_MODE_3B) {
- ba = &mac_control->rings[ring_no].
- ba[blk][j];
- pci_unmap_single(sp->pdev, (dma_addr_t)
- ((struct RxD3*)rxdp)->Buffer0_ptr,
- BUF0_LEN,
- PCI_DMA_FROMDEVICE);
- pci_unmap_single(sp->pdev, (dma_addr_t)
- ((struct RxD3*)rxdp)->Buffer1_ptr,
- BUF1_LEN,
- PCI_DMA_FROMDEVICE);
- pci_unmap_single(sp->pdev, (dma_addr_t)
- ((struct RxD3*)rxdp)->Buffer2_ptr,
- dev->mtu + 4,
- PCI_DMA_FROMDEVICE);
- memset(rxdp, 0, sizeof(struct RxD3));
- } else {
- pci_unmap_single(sp->pdev, (dma_addr_t)
- ((struct RxD3*)rxdp)->Buffer0_ptr, BUF0_LEN,
- PCI_DMA_FROMDEVICE);
- pci_unmap_single(sp->pdev, (dma_addr_t)
- ((struct RxD3*)rxdp)->Buffer1_ptr,
- l3l4hdr_size + 4,
- PCI_DMA_FROMDEVICE);
- pci_unmap_single(sp->pdev, (dma_addr_t)
- ((struct RxD3*)rxdp)->Buffer2_ptr, dev->mtu,
- PCI_DMA_FROMDEVICE);
- memset(rxdp, 0, sizeof(struct RxD3));
+ switch(sp->rxd_mode) {
+ case RXD_MODE_1:
+ pci_unmap_single(sp->pdev, (dma_addr_t)
+ ((struct RxD1*)rxdp)->Buffer0_ptr,
+ dev->mtu +
+ HEADER_ETHERNET_II_802_3_SIZE
+ + HEADER_802_2_SIZE +
+ HEADER_SNAP_SIZE,
+ PCI_DMA_FROMDEVICE);
+ memset(rxdp, 0, sizeof(struct RxD1));
+ break;
+
+ case RXD_MODE_3B:
+ ba = &mac_control->rings[ring_no].
+ ba[blk][j];
+ pci_unmap_single(sp->pdev, (dma_addr_t)
+ ((struct RxD3*)rxdp)->Buffer0_ptr,
+ BUF0_LEN,
+ PCI_DMA_FROMDEVICE);
+ pci_unmap_single(sp->pdev, (dma_addr_t)
+ ((struct RxD3*)rxdp)->Buffer1_ptr,
+ BUF1_LEN,
+ PCI_DMA_FROMDEVICE);
+ pci_unmap_single(sp->pdev, (dma_addr_t)
+ ((struct RxD3*)rxdp)->Buffer2_ptr,
+ dev->mtu + 4,
+ PCI_DMA_FROMDEVICE);
+ memset(rxdp, 0, sizeof(struct RxD3));
+ break;
}
sp->mac_control.stats_info->sw_stat.mem_freed += skb->truesize;
dev_kfree_skb(skb);
@@ -2849,36 +2772,29 @@ static void rx_intr_handler(struct ring_
spin_unlock(&nic->rx_lock);
return;
}
- if (nic->rxd_mode == RXD_MODE_1) {
- pci_unmap_single(nic->pdev, (dma_addr_t)
- ((struct RxD1*)rxdp)->Buffer0_ptr,
- dev->mtu +
- HEADER_ETHERNET_II_802_3_SIZE +
- HEADER_802_2_SIZE +
- HEADER_SNAP_SIZE,
- PCI_DMA_FROMDEVICE);
- } else if (nic->rxd_mode == RXD_MODE_3B) {
- pci_unmap_single(nic->pdev, (dma_addr_t)
- ((struct RxD3*)rxdp)->Buffer0_ptr,
- BUF0_LEN, PCI_DMA_FROMDEVICE);
- pci_unmap_single(nic->pdev, (dma_addr_t)
- ((struct RxD3*)rxdp)->Buffer1_ptr,
- BUF1_LEN, PCI_DMA_FROMDEVICE);
- pci_unmap_single(nic->pdev, (dma_addr_t)
- ((struct RxD3*)rxdp)->Buffer2_ptr,
- dev->mtu + 4,
- PCI_DMA_FROMDEVICE);
- } else {
- pci_unmap_single(nic->pdev, (dma_addr_t)
- ((struct RxD3*)rxdp)->Buffer0_ptr, BUF0_LEN,
- PCI_DMA_FROMDEVICE);
- pci_unmap_single(nic->pdev, (dma_addr_t)
- ((struct RxD3*)rxdp)->Buffer1_ptr,
- l3l4hdr_size + 4,
- PCI_DMA_FROMDEVICE);
- pci_unmap_single(nic->pdev, (dma_addr_t)
- ((struct RxD3*)rxdp)->Buffer2_ptr,
- dev->mtu, PCI_DMA_FROMDEVICE);
+ switch(nic->rxd_mode) {
+ case RXD_MODE_1:
+ pci_unmap_single(nic->pdev, (dma_addr_t)
+ ((struct RxD1*)rxdp)->Buffer0_ptr,
+ dev->mtu +
+ HEADER_ETHERNET_II_802_3_SIZE +
+ HEADER_802_2_SIZE +
+ HEADER_SNAP_SIZE,
+ PCI_DMA_FROMDEVICE);
+ break;
+
+ case RXD_MODE_3B:
+ pci_unmap_single(nic->pdev, (dma_addr_t)
+ ((struct RxD3*)rxdp)->Buffer0_ptr,
+ BUF0_LEN, PCI_DMA_FROMDEVICE);
+ pci_unmap_single(nic->pdev, (dma_addr_t)
+ ((struct RxD3*)rxdp)->Buffer1_ptr,
+ BUF1_LEN, PCI_DMA_FROMDEVICE);
+ pci_unmap_single(nic->pdev, (dma_addr_t)
+ ((struct RxD3*)rxdp)->Buffer2_ptr,
+ dev->mtu + 4,
+ PCI_DMA_FROMDEVICE);
+ break;
}
prefetch(skb->data);
rx_osm_handler(ring_data, rxdp);
@@ -4919,8 +4835,6 @@ static void s2io_ethtool_gringparam(stru
ering->rx_max_pending = MAX_RX_DESC_1;
else if (sp->rxd_mode == RXD_MODE_3B)
ering->rx_max_pending = MAX_RX_DESC_2;
- else if (sp->rxd_mode == RXD_MODE_3A)
- ering->rx_max_pending = MAX_RX_DESC_3;
ering->tx_max_pending = MAX_TX_DESC;
for (i = 0 ; i < sp->config.tx_fifo_num ; i++) {
@@ -6259,208 +6173,132 @@ static int set_rxd_buffer_pointer(struct
u64 *temp2, int size)
{
struct net_device *dev = sp->dev;
- struct sk_buff *frag_list;
+
+ if (rxdp->Host_Control)
+ return 0;
- if ((sp->rxd_mode == RXD_MODE_1) && (rxdp->Host_Control == 0)) {
- /* allocate skb */
- if (*skb) {
- DBG_PRINT(INFO_DBG, "SKB is not NULL\n");
- /*
- * As Rx frame are not going to be processed,
- * using same mapped address for the Rxd
- * buffer pointer
- */
- ((struct RxD1*)rxdp)->Buffer0_ptr = *temp0;
- } else {
- *skb = dev_alloc_skb(size);
- if (!(*skb)) {
- DBG_PRINT(INFO_DBG, "%s: Out of ", dev->name);
- DBG_PRINT(INFO_DBG, "memory to allocate ");
- DBG_PRINT(INFO_DBG, "1 buf mode SKBs\n");
- sp->mac_control.stats_info->sw_stat. \
- mem_alloc_fail_cnt++;
- return -ENOMEM ;
- }
- sp->mac_control.stats_info->sw_stat.mem_allocated
- += (*skb)->truesize;
- /* storing the mapped addr in a temp variable
- * such it will be used for next rxd whose
- * Host Control is NULL
- */
- ((struct RxD1*)rxdp)->Buffer0_ptr = *temp0 =
- pci_map_single( sp->pdev, (*skb)->data,
- size - NET_IP_ALIGN,
- PCI_DMA_FROMDEVICE);
- if ((((struct RxD1*)rxdp)->Buffer0_ptr == 0) ||
- (((struct RxD1*)rxdp)->Buffer0_ptr ==
- DMA_ERROR_CODE)) {
- sp->mac_control.stats_info->sw_stat.
- pci_map_fail_cnt++;
- sp->mac_control.stats_info->sw_stat.mem_freed +=
- (*skb)->truesize;
- dev_kfree_skb(*skb);
- return -ENOMEM;
- }
- rxdp->Host_Control = (unsigned long) (*skb);
- }
- } else if ((sp->rxd_mode == RXD_MODE_3B) && (rxdp->Host_Control == 0)) {
- /* Two buffer Mode */
- if (*skb) {
- ((struct RxD3*)rxdp)->Buffer2_ptr = *temp2;
- ((struct RxD3*)rxdp)->Buffer0_ptr = *temp0;
- ((struct RxD3*)rxdp)->Buffer1_ptr = *temp1;
- } else {
- *skb = dev_alloc_skb(size);
- if (!(*skb)) {
- DBG_PRINT(INFO_DBG, "%s: Out of ", dev->name);
- DBG_PRINT(INFO_DBG, "memory to allocate ");
- DBG_PRINT(INFO_DBG, "2 buf mode SKBs\n");
- sp->mac_control.stats_info->sw_stat. \
- mem_alloc_fail_cnt++;
- return -ENOMEM;
- }
- sp->mac_control.stats_info->sw_stat.mem_allocated
- += (*skb)->truesize;
- ((struct RxD3*)rxdp)->Buffer2_ptr = *temp2 =
- pci_map_single(sp->pdev, (*skb)->data,
- dev->mtu + 4,
- PCI_DMA_FROMDEVICE);
- if ((((struct RxD3*)rxdp)->Buffer2_ptr == 0) ||
- (((struct RxD3*)rxdp)->Buffer2_ptr ==
- DMA_ERROR_CODE)) {
+ switch(sp->rxd_mode) {
+ case RXD_MODE_1:
+ /* allocate skb */
+ if (*skb) {
+ DBG_PRINT(INFO_DBG, "SKB is not NULL\n");
+ /*
+ * As Rx frame are not going to be processed,
+ * using same mapped address for the Rxd
+ * buffer pointer
+ */
+ ((struct RxD1*)rxdp)->Buffer0_ptr = *temp0;
+ } else {
+ *skb = dev_alloc_skb(size);
+ if (!(*skb)) {
+ DBG_PRINT(INFO_DBG, "%s: Out of ",
+ dev->name);
+ DBG_PRINT(INFO_DBG,
+ "memory to allocate ");
+ DBG_PRINT(INFO_DBG,
+ "1 buf mode SKBs\n");
+ sp->mac_control.stats_info->sw_stat.
+ mem_alloc_fail_cnt++;
+ return -ENOMEM ;
+ }
sp->mac_control.stats_info->sw_stat.
- pci_map_fail_cnt++;
- sp->mac_control.stats_info->sw_stat.mem_freed +=
- (*skb)->truesize;
- dev_kfree_skb(*skb);
- return -ENOMEM;
- }
- ((struct RxD3*)rxdp)->Buffer0_ptr = *temp0 =
- pci_map_single( sp->pdev, ba->ba_0, BUF0_LEN,
+ mem_allocated += (*skb)->truesize;
+ /* storing the mapped addr in a temp variable
+ * such it will be used for next rxd whose
+ * Host Control is NULL
+ */
+ ((struct RxD1*)rxdp)->Buffer0_ptr = *temp0 =
+ pci_map_single( sp->pdev, (*skb)->data,
+ size - NET_IP_ALIGN,
PCI_DMA_FROMDEVICE);
- if ((((struct RxD3*)rxdp)->Buffer0_ptr == 0) ||
- (((struct RxD3*)rxdp)->Buffer0_ptr ==
- DMA_ERROR_CODE)) {
- sp->mac_control.stats_info->sw_stat.
- pci_map_fail_cnt++;
- sp->mac_control.stats_info->sw_stat.mem_freed +=
- (*skb)->truesize;
- pci_unmap_single (sp->pdev,
- (dma_addr_t)(*skb)->data,
- dev->mtu + 4, PCI_DMA_FROMDEVICE);
- dev_kfree_skb(*skb);
- return -ENOMEM;
+ if ((((struct RxD1*)rxdp)->Buffer0_ptr == 0) ||
+ (((struct RxD1*)rxdp)->Buffer0_ptr ==
+ DMA_ERROR_CODE)) {
+ sp->mac_control.stats_info->sw_stat.
+ pci_map_fail_cnt++;
+ sp->mac_control.stats_info->sw_stat.
+ mem_freed += (*skb)->truesize;
+ dev_kfree_skb(*skb);
+ return -ENOMEM;
+ }
+ rxdp->Host_Control = (unsigned long) (*skb);
}
- rxdp->Host_Control = (unsigned long) (*skb);
+ break;
- /* Buffer-1 will be dummy buffer not used */
- ((struct RxD3*)rxdp)->Buffer1_ptr = *temp1 =
- pci_map_single(sp->pdev, ba->ba_1, BUF1_LEN,
- PCI_DMA_FROMDEVICE);
- if ((((struct RxD3*)rxdp)->Buffer0_ptr == 0) ||
- (((struct RxD3*)rxdp)->Buffer0_ptr ==
- DMA_ERROR_CODE)) {
- sp->mac_control.stats_info->sw_stat.
- pci_map_fail_cnt++;
- sp->mac_control.stats_info->sw_stat.mem_freed +=
- (*skb)->truesize;
- pci_unmap_single (sp->pdev,
- (dma_addr_t)(*skb)->data,
- dev->mtu + 4, PCI_DMA_FROMDEVICE);
- dev_kfree_skb(*skb);
- return -ENOMEM;
- }
- }
- } else if ((rxdp->Host_Control == 0)) {
- /* Three buffer mode */
- if (*skb) {
- ((struct RxD3*)rxdp)->Buffer0_ptr = *temp0;
- ((struct RxD3*)rxdp)->Buffer1_ptr = *temp1;
- ((struct RxD3*)rxdp)->Buffer2_ptr = *temp2;
- } else {
- *skb = dev_alloc_skb(size);
- if (!(*skb)) {
- DBG_PRINT(INFO_DBG, "%s: Out of ", dev->name);
- DBG_PRINT(INFO_DBG, "memory to allocate ");
- DBG_PRINT(INFO_DBG, "3 buf mode SKBs\n");
- sp->mac_control.stats_info->sw_stat. \
- mem_alloc_fail_cnt++;
- return -ENOMEM;
- }
- sp->mac_control.stats_info->sw_stat.mem_allocated
- += (*skb)->truesize;
- ((struct RxD3*)rxdp)->Buffer0_ptr = *temp0 =
- pci_map_single(sp->pdev, ba->ba_0, BUF0_LEN,
- PCI_DMA_FROMDEVICE);
- if ((((struct RxD3*)rxdp)->Buffer0_ptr == 0) ||
- (((struct RxD3*)rxdp)->Buffer0_ptr ==
- DMA_ERROR_CODE)) {
+ case RXD_MODE_3B:
+ /* Two buffer Mode */
+ if (*skb) {
+ ((struct RxD3*)rxdp)->Buffer2_ptr = *temp2;
+ ((struct RxD3*)rxdp)->Buffer0_ptr = *temp0;
+ ((struct RxD3*)rxdp)->Buffer1_ptr = *temp1;
+ } else {
+ *skb = dev_alloc_skb(size);
+ if (!(*skb)) {
+ DBG_PRINT(INFO_DBG, "%s: Out of ",
+ dev->name);
+ DBG_PRINT(INFO_DBG,
+ "memory to allocate ");
+ DBG_PRINT(INFO_DBG,
+ "2 buf mode SKBs\n");
+ sp->mac_control.stats_info->sw_stat.
+ mem_alloc_fail_cnt++;
+ return -ENOMEM;
+ }
sp->mac_control.stats_info->sw_stat.
- pci_map_fail_cnt++;
- sp->mac_control.stats_info->sw_stat.mem_freed +=
- (*skb)->truesize;
- dev_kfree_skb(*skb);
- return -ENOMEM;
- }
- /* Buffer-1 receives L3/L4 headers */
- ((struct RxD3*)rxdp)->Buffer1_ptr = *temp1 =
- pci_map_single( sp->pdev, (*skb)->data,
- l3l4hdr_size + 4,
+ mem_allocated += (*skb)->truesize;
+ ((struct RxD3*)rxdp)->Buffer2_ptr = *temp2 =
+ pci_map_single(sp->pdev, (*skb)->data,
+ dev->mtu + 4,
+ PCI_DMA_FROMDEVICE);
+ if ((((struct RxD3*)rxdp)->Buffer2_ptr == 0) ||
+ (((struct RxD3*)rxdp)->Buffer2_ptr ==
+ DMA_ERROR_CODE)) {
+ sp->mac_control.stats_info->sw_stat.
+ pci_map_fail_cnt++;
+ sp->mac_control.stats_info->sw_stat.
+ mem_freed += (*skb)->truesize;
+ dev_kfree_skb(*skb);
+ return -ENOMEM;
+ }
+ ((struct RxD3*)rxdp)->Buffer0_ptr = *temp0 =
+ pci_map_single( sp->pdev, ba->ba_0,
+ BUF0_LEN, PCI_DMA_FROMDEVICE);
+ if ((((struct RxD3*)rxdp)->Buffer0_ptr == 0) ||
+ (((struct RxD3*)rxdp)->Buffer0_ptr ==
+ DMA_ERROR_CODE)) {
+ sp->mac_control.stats_info->sw_stat.
+ pci_map_fail_cnt++;
+ sp->mac_control.stats_info->sw_stat.
+ mem_freed += (*skb)->truesize;
+ pci_unmap_single (sp->pdev,
+ (dma_addr_t)(*skb)->data,
+ dev->mtu + 4,
PCI_DMA_FROMDEVICE);
- if ((((struct RxD3*)rxdp)->Buffer1_ptr == 0) ||
- (((struct RxD3*)rxdp)->Buffer1_ptr ==
- DMA_ERROR_CODE)) {
- sp->mac_control.stats_info->sw_stat.
- pci_map_fail_cnt++;
- sp->mac_control.stats_info->sw_stat.mem_freed +=
- (*skb)->truesize;
- dev_kfree_skb(*skb);
- return -ENOMEM;
- }
- /*
- * skb_shinfo(skb)->frag_list will have L4
- * data payload
- */
- skb_shinfo(*skb)->frag_list = dev_alloc_skb(dev->mtu +
- ALIGN_SIZE);
- if (skb_shinfo(*skb)->frag_list == NULL) {
- DBG_PRINT(ERR_DBG, "%s: dev_alloc_skb \
- failed\n ", dev->name);
- sp->mac_control.stats_info->sw_stat. \
- mem_alloc_fail_cnt++;
- sp->mac_control.stats_info->sw_stat.mem_freed
- += (*skb)->truesize;
- pci_unmap_single (sp->pdev,
- (dma_addr_t)(*skb)->data,
- l3l4hdr_size + 4, PCI_DMA_FROMDEVICE);
- dev_kfree_skb(*skb);
- return -ENOMEM ;
- }
- frag_list = skb_shinfo(*skb)->frag_list;
- frag_list->next = NULL;
- (*skb)->truesize += frag_list->truesize;
- sp->mac_control.stats_info->sw_stat.mem_allocated
- += frag_list->truesize;
- /*
- * Buffer-2 receives L4 data payload
- */
- ((struct RxD3*)rxdp)->Buffer2_ptr = *temp2 =
- pci_map_single( sp->pdev, frag_list->data,
- dev->mtu, PCI_DMA_FROMDEVICE);
- if ((((struct RxD3*)rxdp)->Buffer2_ptr == 0) ||
- (((struct RxD3*)rxdp)->Buffer2_ptr ==
- DMA_ERROR_CODE)) {
- sp->mac_control.stats_info->sw_stat.
- pci_map_fail_cnt++;
- sp->mac_control.stats_info->sw_stat.mem_freed +=
- (*skb)->truesize;
- pci_unmap_single (sp->pdev,
- (dma_addr_t)(*skb)->data,
- l3l4hdr_size + 4, PCI_DMA_FROMDEVICE);
- dev_kfree_skb(*skb);
- return -ENOMEM;
+ dev_kfree_skb(*skb);
+ return -ENOMEM;
+ }
+ rxdp->Host_Control = (unsigned long) (*skb);
+
+ /* Buffer-1 will be dummy buffer not used */
+ ((struct RxD3*)rxdp)->Buffer1_ptr = *temp1 =
+ pci_map_single(sp->pdev, ba->ba_1,
+ BUF1_LEN, PCI_DMA_FROMDEVICE);
+ if ((((struct RxD3*)rxdp)->Buffer0_ptr == 0) ||
+ (((struct RxD3*)rxdp)->Buffer0_ptr ==
+ DMA_ERROR_CODE)) {
+ sp->mac_control.stats_info->sw_stat.
+ pci_map_fail_cnt++;
+ sp->mac_control.stats_info->sw_stat.
+ mem_freed += (*skb)->truesize;
+ pci_unmap_single (sp->pdev,
+ (dma_addr_t)(*skb)->data,
+ dev->mtu + 4,
+ PCI_DMA_FROMDEVICE);
+ dev_kfree_skb(*skb);
+ return -ENOMEM;
+ }
}
- }
+ break;
}
return 0;
}
@@ -6468,16 +6306,16 @@ static void set_rxd_buffer_size(struct s
int size)
{
struct net_device *dev = sp->dev;
- if (sp->rxd_mode == RXD_MODE_1) {
- rxdp->Control_2 = SET_BUFFER0_SIZE_1( size - NET_IP_ALIGN);
- } else if (sp->rxd_mode == RXD_MODE_3B) {
- rxdp->Control_2 = SET_BUFFER0_SIZE_3(BUF0_LEN);
- rxdp->Control_2 |= SET_BUFFER1_SIZE_3(1);
- rxdp->Control_2 |= SET_BUFFER2_SIZE_3( dev->mtu + 4);
- } else {
- rxdp->Control_2 = SET_BUFFER0_SIZE_3(BUF0_LEN);
- rxdp->Control_2 |= SET_BUFFER1_SIZE_3(l3l4hdr_size + 4);
- rxdp->Control_2 |= SET_BUFFER2_SIZE_3(dev->mtu);
+ switch(sp->rxd_mode) {
+ case RXD_MODE_1:
+ rxdp->Control_2 = SET_BUFFER0_SIZE_1( size -
+ NET_IP_ALIGN);
+ break;
+ case RXD_MODE_3B:
+ rxdp->Control_2 = SET_BUFFER0_SIZE_3(BUF0_LEN);
+ rxdp->Control_2 |= SET_BUFFER1_SIZE_3(1);
+ rxdp->Control_2 |= SET_BUFFER2_SIZE_3( dev->mtu + 4);
+ break;
}
}
@@ -6510,7 +6348,7 @@ static int rxd_owner_bit_reset(struct s
for (k = 0; k < rxd_count[sp->rxd_mode]; k++) {
rxdp = mac_control->rings[i].
rx_blocks[j].rxds[k].virt_addr;
- if(sp->rxd_mode >= RXD_MODE_3A)
+ if(sp->rxd_mode == RXD_MODE_3B)
ba = &mac_control->rings[i].ba[j][k];
if (set_rxd_buffer_pointer(sp, rxdp, ba,
&skb,(u64 *)&temp0_64,
@@ -6966,7 +6804,7 @@ static int rx_osm_handler(struct ring_in
sp->stats.rx_bytes += len;
skb_put(skb, len);
- } else if (sp->rxd_mode >= RXD_MODE_3A) {
+ } else if (sp->rxd_mode == RXD_MODE_3B) {
int get_block = ring_data->rx_curr_get_info.block_index;
int get_off = ring_data->rx_curr_get_info.offset;
int buf0_len = RXD_GET_BUFFER0_SIZE_3(rxdp->Control_2);
@@ -6977,17 +6815,7 @@ static int rx_osm_handler(struct ring_in
sp->stats.rx_bytes += buf0_len + buf2_len;
memcpy(buff, ba->ba_0, buf0_len);
- if (sp->rxd_mode == RXD_MODE_3A) {
- int buf1_len = RXD_GET_BUFFER1_SIZE_3(rxdp->Control_2);
-
- skb_put(skb, buf1_len);
- skb->len += buf2_len;
- skb->data_len += buf2_len;
- skb_put(skb_shinfo(skb)->frag_list, buf2_len);
- sp->stats.rx_bytes += buf1_len;
-
- } else
- skb_put(skb, buf2_len);
+ skb_put(skb, buf2_len);
}
if ((rxdp->Control_1 & TCP_OR_UDP_FRAME) && ((!sp->lro) ||
@@ -7214,10 +7042,10 @@ static int s2io_verify_parm(struct pci_d
*dev_intr_type = INTA;
}
- if (rx_ring_mode > 3) {
+ if ((rx_ring_mode != 1) && (rx_ring_mode != 2)) {
DBG_PRINT(ERR_DBG, "s2io: Requested ring mode not supported\n");
- DBG_PRINT(ERR_DBG, "s2io: Defaulting to 3-buffer mode\n");
- rx_ring_mode = 3;
+ DBG_PRINT(ERR_DBG, "s2io: Defaulting to 1-buffer mode\n");
+ rx_ring_mode = 1;
}
return SUCCESS;
}
@@ -7349,8 +7177,6 @@ s2io_init_nic(struct pci_dev *pdev, cons
sp->rxd_mode = RXD_MODE_1;
if (rx_ring_mode == 2)
sp->rxd_mode = RXD_MODE_3B;
- if (rx_ring_mode == 3)
- sp->rxd_mode = RXD_MODE_3A;
sp->intr_type = dev_intr_type;
@@ -7627,10 +7453,6 @@ s2io_init_nic(struct pci_dev *pdev, cons
DBG_PRINT(ERR_DBG, "%s: 2-Buffer receive mode enabled\n",
dev->name);
break;
- case RXD_MODE_3A:
- DBG_PRINT(ERR_DBG, "%s: 3-Buffer receive mode enabled\n",
- dev->name);
- break;
}
if (napi)
diff -urpN patch_2/drivers/net/s2io.h patch_3/drivers/net/s2io.h
--- patch_2/drivers/net/s2io.h 2007-05-21 15:15:11.000000000 +0530
+++ patch_3/drivers/net/s2io.h 2007-05-21 15:32:26.000000000 +0530
@@ -580,8 +580,7 @@ struct RxD_block {
#define SIZE_OF_BLOCK 4096
#define RXD_MODE_1 0 /* One Buffer mode */
-#define RXD_MODE_3A 1 /* Three Buffer mode */
-#define RXD_MODE_3B 2 /* Two Buffer mode */
+#define RXD_MODE_3B 1 /* Two Buffer mode */
/* Structure to hold virtual addresses of Buf0 and Buf1 in
* 2buf mode. */
-
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