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path: root/drivers/net/e1000/e1000_main.c
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Diffstat (limited to 'drivers/net/e1000/e1000_main.c')
-rw-r--r--drivers/net/e1000/e1000_main.c130
1 files changed, 69 insertions, 61 deletions
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index bcd192ca47b0..7e855f9bbd97 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -1839,10 +1839,17 @@ void e1000_free_all_tx_resources(struct e1000_adapter *adapter)
static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter,
struct e1000_buffer *buffer_info)
{
- buffer_info->dma = 0;
+ if (buffer_info->dma) {
+ if (buffer_info->mapped_as_page)
+ pci_unmap_page(adapter->pdev, buffer_info->dma,
+ buffer_info->length, PCI_DMA_TODEVICE);
+ else
+ pci_unmap_single(adapter->pdev, buffer_info->dma,
+ buffer_info->length,
+ PCI_DMA_TODEVICE);
+ buffer_info->dma = 0;
+ }
if (buffer_info->skb) {
- skb_dma_unmap(&adapter->pdev->dev, buffer_info->skb,
- DMA_TO_DEVICE);
dev_kfree_skb_any(buffer_info->skb);
buffer_info->skb = NULL;
}
@@ -2683,22 +2690,14 @@ static int e1000_tx_map(struct e1000_adapter *adapter,
unsigned int mss)
{
struct e1000_hw *hw = &adapter->hw;
+ struct pci_dev *pdev = adapter->pdev;
struct e1000_buffer *buffer_info;
unsigned int len = skb_headlen(skb);
- unsigned int offset, size, count = 0, i;
+ unsigned int offset = 0, size, count = 0, i;
unsigned int f;
- dma_addr_t *map;
i = tx_ring->next_to_use;
- if (skb_dma_map(&adapter->pdev->dev, skb, DMA_TO_DEVICE)) {
- dev_err(&adapter->pdev->dev, "TX DMA map failed\n");
- return 0;
- }
-
- map = skb_shinfo(skb)->dma_maps;
- offset = 0;
-
while (len) {
buffer_info = &tx_ring->buffer_info[i];
size = min(len, max_per_txd);
@@ -2735,7 +2734,11 @@ static int e1000_tx_map(struct e1000_adapter *adapter,
buffer_info->length = size;
/* set time_stamp *before* dma to help avoid a possible race */
buffer_info->time_stamp = jiffies;
- buffer_info->dma = skb_shinfo(skb)->dma_head + offset;
+ buffer_info->mapped_as_page = false;
+ buffer_info->dma = pci_map_single(pdev, skb->data + offset,
+ size, PCI_DMA_TODEVICE);
+ if (pci_dma_mapping_error(pdev, buffer_info->dma))
+ goto dma_error;
buffer_info->next_to_watch = i;
len -= size;
@@ -2753,7 +2756,7 @@ static int e1000_tx_map(struct e1000_adapter *adapter,
frag = &skb_shinfo(skb)->frags[f];
len = frag->size;
- offset = 0;
+ offset = frag->page_offset;
while (len) {
i++;
@@ -2777,7 +2780,12 @@ static int e1000_tx_map(struct e1000_adapter *adapter,
buffer_info->length = size;
buffer_info->time_stamp = jiffies;
- buffer_info->dma = map[f] + offset;
+ buffer_info->mapped_as_page = true;
+ buffer_info->dma = pci_map_page(pdev, frag->page,
+ offset, size,
+ PCI_DMA_TODEVICE);
+ if (pci_dma_mapping_error(pdev, buffer_info->dma))
+ goto dma_error;
buffer_info->next_to_watch = i;
len -= size;
@@ -2790,6 +2798,22 @@ static int e1000_tx_map(struct e1000_adapter *adapter,
tx_ring->buffer_info[first].next_to_watch = i;
return count;
+
+dma_error:
+ dev_err(&pdev->dev, "TX DMA map failed\n");
+ buffer_info->dma = 0;
+ count--;
+
+ while (count >= 0) {
+ count--;
+ i--;
+ if (i < 0)
+ i += tx_ring->count;
+ buffer_info = &tx_ring->buffer_info[i];
+ e1000_unmap_and_free_tx_resource(adapter, buffer_info);
+ }
+
+ return 0;
}
static void e1000_tx_queue(struct e1000_adapter *adapter,
@@ -3101,10 +3125,8 @@ static void e1000_reset_task(struct work_struct *work)
static struct net_device_stats *e1000_get_stats(struct net_device *netdev)
{
- struct e1000_adapter *adapter = netdev_priv(netdev);
-
/* only return the current stats */
- return &adapter->net_stats;
+ return &netdev->stats;
}
/**
@@ -3196,6 +3218,7 @@ static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
void e1000_update_stats(struct e1000_adapter *adapter)
{
+ struct net_device *netdev = adapter->netdev;
struct e1000_hw *hw = &adapter->hw;
struct pci_dev *pdev = adapter->pdev;
unsigned long flags;
@@ -3288,32 +3311,32 @@ void e1000_update_stats(struct e1000_adapter *adapter)
}
/* Fill out the OS statistics structure */
- adapter->net_stats.multicast = adapter->stats.mprc;
- adapter->net_stats.collisions = adapter->stats.colc;
+ netdev->stats.multicast = adapter->stats.mprc;
+ netdev->stats.collisions = adapter->stats.colc;
/* Rx Errors */
/* RLEC on some newer hardware can be incorrect so build
* our own version based on RUC and ROC */
- adapter->net_stats.rx_errors = adapter->stats.rxerrc +
+ netdev->stats.rx_errors = adapter->stats.rxerrc +
adapter->stats.crcerrs + adapter->stats.algnerrc +
adapter->stats.ruc + adapter->stats.roc +
adapter->stats.cexterr;
adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc;
- adapter->net_stats.rx_length_errors = adapter->stats.rlerrc;
- adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
- adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
- adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
+ netdev->stats.rx_length_errors = adapter->stats.rlerrc;
+ netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
+ netdev->stats.rx_frame_errors = adapter->stats.algnerrc;
+ netdev->stats.rx_missed_errors = adapter->stats.mpc;
/* Tx Errors */
adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol;
- adapter->net_stats.tx_errors = adapter->stats.txerrc;
- adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
- adapter->net_stats.tx_window_errors = adapter->stats.latecol;
- adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
+ netdev->stats.tx_errors = adapter->stats.txerrc;
+ netdev->stats.tx_aborted_errors = adapter->stats.ecol;
+ netdev->stats.tx_window_errors = adapter->stats.latecol;
+ netdev->stats.tx_carrier_errors = adapter->stats.tncrs;
if (hw->bad_tx_carr_stats_fd &&
adapter->link_duplex == FULL_DUPLEX) {
- adapter->net_stats.tx_carrier_errors = 0;
+ netdev->stats.tx_carrier_errors = 0;
adapter->stats.tncrs = 0;
}
@@ -3484,8 +3507,8 @@ static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
adapter->detect_tx_hung = false;
if (tx_ring->buffer_info[eop].time_stamp &&
time_after(jiffies, tx_ring->buffer_info[eop].time_stamp +
- (adapter->tx_timeout_factor * HZ))
- && !(er32(STATUS) & E1000_STATUS_TXOFF)) {
+ (adapter->tx_timeout_factor * HZ)) &&
+ !(er32(STATUS) & E1000_STATUS_TXOFF)) {
/* detected Tx unit hang */
DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n"
@@ -3514,8 +3537,8 @@ static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
}
adapter->total_tx_bytes += total_tx_bytes;
adapter->total_tx_packets += total_tx_packets;
- adapter->net_stats.tx_bytes += total_tx_bytes;
- adapter->net_stats.tx_packets += total_tx_packets;
+ netdev->stats.tx_bytes += total_tx_bytes;
+ netdev->stats.tx_packets += total_tx_packets;
return (count < tx_ring->count);
}
@@ -3767,8 +3790,8 @@ next_desc:
adapter->total_rx_packets += total_rx_packets;
adapter->total_rx_bytes += total_rx_bytes;
- adapter->net_stats.rx_bytes += total_rx_bytes;
- adapter->net_stats.rx_packets += total_rx_packets;
+ netdev->stats.rx_bytes += total_rx_bytes;
+ netdev->stats.rx_packets += total_rx_packets;
return cleaned;
}
@@ -3867,9 +3890,8 @@ static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
* of reassembly being done in the stack */
if (length < copybreak) {
struct sk_buff *new_skb =
- netdev_alloc_skb(netdev, length + NET_IP_ALIGN);
+ netdev_alloc_skb_ip_align(netdev, length);
if (new_skb) {
- skb_reserve(new_skb, NET_IP_ALIGN);
skb_copy_to_linear_data_offset(new_skb,
-NET_IP_ALIGN,
(skb->data -
@@ -3916,8 +3938,8 @@ next_desc:
adapter->total_rx_packets += total_rx_packets;
adapter->total_rx_bytes += total_rx_bytes;
- adapter->net_stats.rx_bytes += total_rx_bytes;
- adapter->net_stats.rx_packets += total_rx_packets;
+ netdev->stats.rx_bytes += total_rx_bytes;
+ netdev->stats.rx_packets += total_rx_packets;
return cleaned;
}
@@ -3938,9 +3960,7 @@ e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
struct e1000_buffer *buffer_info;
struct sk_buff *skb;
unsigned int i;
- unsigned int bufsz = 256 -
- 16 /*for skb_reserve */ -
- NET_IP_ALIGN;
+ unsigned int bufsz = 256 - 16 /*for skb_reserve */ ;
i = rx_ring->next_to_use;
buffer_info = &rx_ring->buffer_info[i];
@@ -3952,7 +3972,7 @@ e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
goto check_page;
}
- skb = netdev_alloc_skb(netdev, bufsz);
+ skb = netdev_alloc_skb_ip_align(netdev, bufsz);
if (unlikely(!skb)) {
/* Better luck next round */
adapter->alloc_rx_buff_failed++;
@@ -3965,7 +3985,7 @@ e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
DPRINTK(PROBE, ERR, "skb align check failed: %u bytes "
"at %p\n", bufsz, skb->data);
/* Try again, without freeing the previous */
- skb = netdev_alloc_skb(netdev, bufsz);
+ skb = netdev_alloc_skb_ip_align(netdev, bufsz);
/* Failed allocation, critical failure */
if (!skb) {
dev_kfree_skb(oldskb);
@@ -3983,12 +4003,6 @@ e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
/* Use new allocation */
dev_kfree_skb(oldskb);
}
- /* Make buffer alignment 2 beyond a 16 byte boundary
- * this will result in a 16 byte aligned IP header after
- * the 14 byte MAC header is removed
- */
- skb_reserve(skb, NET_IP_ALIGN);
-
buffer_info->skb = skb;
buffer_info->length = adapter->rx_buffer_len;
check_page:
@@ -4045,7 +4059,7 @@ static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
struct e1000_buffer *buffer_info;
struct sk_buff *skb;
unsigned int i;
- unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN;
+ unsigned int bufsz = adapter->rx_buffer_len;
i = rx_ring->next_to_use;
buffer_info = &rx_ring->buffer_info[i];
@@ -4057,7 +4071,7 @@ static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
goto map_skb;
}
- skb = netdev_alloc_skb(netdev, bufsz);
+ skb = netdev_alloc_skb_ip_align(netdev, bufsz);
if (unlikely(!skb)) {
/* Better luck next round */
adapter->alloc_rx_buff_failed++;
@@ -4070,7 +4084,7 @@ static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes "
"at %p\n", bufsz, skb->data);
/* Try again, without freeing the previous */
- skb = netdev_alloc_skb(netdev, bufsz);
+ skb = netdev_alloc_skb_ip_align(netdev, bufsz);
/* Failed allocation, critical failure */
if (!skb) {
dev_kfree_skb(oldskb);
@@ -4089,12 +4103,6 @@ static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
/* Use new allocation */
dev_kfree_skb(oldskb);
}
- /* Make buffer alignment 2 beyond a 16 byte boundary
- * this will result in a 16 byte aligned IP header after
- * the 14 byte MAC header is removed
- */
- skb_reserve(skb, NET_IP_ALIGN);
-
buffer_info->skb = skb;
buffer_info->length = adapter->rx_buffer_len;
map_skb:
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-24 04:56:51 +0300