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net: Use netdev_alloc_skb_ip_align() 

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2009-10-13 05:34:20 +00:00 committed by David S. Miller
parent bff1c09640
commit 89d71a66c4
38 changed files with 90 additions and 232 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/3c59x.c
View File

@ -2560,7 +2560,7 @@ boomerang_rx(struct net_device *dev)
struct sk_buff *skb;
entry = vp->dirty_rx % RX_RING_SIZE;
if (vp->rx_skbuff[entry] == NULL) {
skb = netdev_alloc_skb(dev, PKT_BUF_SZ + NET_IP_ALIGN);
skb = netdev_alloc_skb_ip_align(dev, PKT_BUF_SZ);
if (skb == NULL) {
static unsigned long last_jif;
if (time_after(jiffies, last_jif + 10 * HZ)) {
@ -2572,7 +2572,6 @@ boomerang_rx(struct net_device *dev)
break; /* Bad news! */
}
skb_reserve(skb, NET_IP_ALIGN);
vp->rx_ring[entry].addr = cpu_to_le32(pci_map_single(VORTEX_PCI(vp), skb->data, PKT_BUF_SZ, PCI_DMA_FROMDEVICE));
vp->rx_skbuff[entry] = skb;
}

8
drivers/net/8139cp.c
View File

@ -549,14 +549,12 @@ rx_status_loop:
pr_debug("%s: rx slot %d status 0x%x len %d\n",
dev->name, rx_tail, status, len);
new_skb = netdev_alloc_skb(dev, buflen + NET_IP_ALIGN);
new_skb = netdev_alloc_skb_ip_align(dev, buflen);
if (!new_skb) {
dev->stats.rx_dropped++;
goto rx_next;
}
skb_reserve(new_skb, NET_IP_ALIGN);
dma_unmap_single(&cp->pdev->dev, mapping,
buflen, PCI_DMA_FROMDEVICE);
@ -1057,12 +1055,10 @@ static int cp_refill_rx(struct cp_private *cp)
struct sk_buff *skb;
dma_addr_t mapping;
skb = netdev_alloc_skb(dev, cp->rx_buf_sz + NET_IP_ALIGN);
skb = netdev_alloc_skb_ip_align(dev, cp->rx_buf_sz);
if (!skb)
goto err_out;
skb_reserve(skb, NET_IP_ALIGN);
mapping = dma_map_single(&cp->pdev->dev, skb->data,
cp->rx_buf_sz, PCI_DMA_FROMDEVICE);
cp->rx_skb[i] = skb;

3
drivers/net/8139too.c
View File

@ -2004,9 +2004,8 @@ no_early_rx:
/* Malloc up new buffer, compatible with net-2e. */
/* Omit the four octet CRC from the length. */
skb = netdev_alloc_skb(dev, pkt_size + NET_IP_ALIGN);
skb = netdev_alloc_skb_ip_align(dev, pkt_size);
if (likely(skb)) {
skb_reserve (skb, NET_IP_ALIGN); /* 16 byte align the IP fields. */
#if RX_BUF_IDX == 3
wrap_copy(skb, rx_ring, ring_offset+4, pkt_size);
#else

4
drivers/net/atl1e/atl1e_main.c
View File

@ -1433,14 +1433,12 @@ static void atl1e_clean_rx_irq(struct atl1e_adapter *adapter, u8 que,
packet_size = ((prrs->word1 >> RRS_PKT_SIZE_SHIFT) &
RRS_PKT_SIZE_MASK) - 4; /* CRC */
skb = netdev_alloc_skb(netdev,
packet_size + NET_IP_ALIGN);
skb = netdev_alloc_skb_ip_align(netdev, packet_size);
if (skb == NULL) {
dev_warn(&pdev->dev, "%s: Memory squeeze,"
"deferring packet.\n", netdev->name);
goto skip_pkt;
}
skb_reserve(skb, NET_IP_ALIGN);
skb->dev = netdev;
memcpy(skb->data, (u8 *)(prrs + 1), packet_size);
skb_put(skb, packet_size);

11
drivers/net/atlx/atl1.c
View File

@ -1864,21 +1864,14 @@ static u16 atl1_alloc_rx_buffers(struct atl1_adapter *adapter)
rfd_desc = ATL1_RFD_DESC(rfd_ring, rfd_next_to_use);
skb = netdev_alloc_skb(adapter->netdev,
adapter->rx_buffer_len + NET_IP_ALIGN);
skb = netdev_alloc_skb_ip_align(adapter->netdev,
adapter->rx_buffer_len);
if (unlikely(!skb)) {
/* Better luck next round */
adapter->netdev->stats.rx_dropped++;
break;
}
/*
* 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->alloced = 1;
buffer_info->skb = skb;
buffer_info->length = (u16) adapter->rx_buffer_len;

3
drivers/net/atlx/atl2.c
View File

@ -409,7 +409,7 @@ static void atl2_intr_rx(struct atl2_adapter *adapter)
if (rxd->status.ok && rxd->status.pkt_size >= 60) {
int rx_size = (int)(rxd->status.pkt_size - 4);
/* alloc new buffer */
skb = netdev_alloc_skb(netdev, rx_size + NET_IP_ALIGN);
skb = netdev_alloc_skb_ip_align(netdev, rx_size);
if (NULL == skb) {
printk(KERN_WARNING
"%s: Mem squeeze, deferring packet.\n",
@ -421,7 +421,6 @@ static void atl2_intr_rx(struct atl2_adapter *adapter)
netdev->stats.rx_dropped++;
break;
}
skb_reserve(skb, NET_IP_ALIGN);
skb->dev = netdev;
memcpy(skb->data, rxd->packet, rx_size);
skb_put(skb, rx_size);

5
drivers/net/bcm63xx_enet.c
View File

@ -320,16 +320,13 @@ static int bcm_enet_receive_queue(struct net_device *dev, int budget)
if (len < copybreak) {
struct sk_buff *nskb;
nskb = netdev_alloc_skb(dev, len + NET_IP_ALIGN);
nskb = netdev_alloc_skb_ip_align(dev, len);
if (!nskb) {
/* forget packet, just rearm desc */
priv->stats.rx_dropped++;
continue;
}
/* since we're copying the data, we can align
* them properly */
skb_reserve(nskb, NET_IP_ALIGN);
dma_sync_single_for_cpu(kdev, desc->address,
len, DMA_FROM_DEVICE);
memcpy(nskb->data, skb->data, len);

4
drivers/net/benet/be_main.c
View File

@ -756,7 +756,7 @@ static void be_rx_compl_process(struct be_adapter *adapter,
if ((adapter->cap == 0x400) && !vtm)
vlanf = 0;
skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
skb = netdev_alloc_skb_ip_align(adapter->netdev, BE_HDR_LEN);
if (!skb) {
if (net_ratelimit())
dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
@ -764,8 +764,6 @@ static void be_rx_compl_process(struct be_adapter *adapter,
return;
}
skb_reserve(skb, NET_IP_ALIGN);
skb_fill_rx_data(adapter, skb, rxcp);
if (do_pkt_csum(rxcp, adapter->rx_csum))

6
drivers/net/cpmac.c
View File

@ -380,9 +380,8 @@ static struct sk_buff *cpmac_rx_one(struct cpmac_priv *priv,
return NULL;
}
skb = netdev_alloc_skb(priv->dev, CPMAC_SKB_SIZE);
skb = netdev_alloc_skb_ip_align(priv->dev, CPMAC_SKB_SIZE);
if (likely(skb)) {
skb_reserve(skb, 2);
skb_put(desc->skb, desc->datalen);
desc->skb->protocol = eth_type_trans(desc->skb, priv->dev);
desc->skb->ip_summed = CHECKSUM_NONE;
@ -991,12 +990,11 @@ static int cpmac_open(struct net_device *dev)
priv->rx_head = &priv->desc_ring[CPMAC_QUEUES];
for (i = 0, desc = priv->rx_head; i < priv->ring_size; i++, desc++) {
skb = netdev_alloc_skb(dev, CPMAC_SKB_SIZE);
skb = netdev_alloc_skb_ip_align(dev, CPMAC_SKB_SIZE);
if (unlikely(!skb)) {
res = -ENOMEM;
goto fail_desc;
}
skb_reserve(skb, 2);
desc->skb = skb;
desc->data_mapping = dma_map_single(&dev->dev, skb->data,
CPMAC_SKB_SIZE,

18
drivers/net/dl2k.c
View File

@ -505,7 +505,8 @@ rio_timer (unsigned long data)
entry = np->old_rx % RX_RING_SIZE;
/* Dropped packets don't need to re-allocate */
if (np->rx_skbuff[entry] == NULL) {
skb = netdev_alloc_skb (dev, np->rx_buf_sz);
skb = netdev_alloc_skb_ip_align(dev,
np->rx_buf_sz);
if (skb == NULL) {
np->rx_ring[entry].fraginfo = 0;
printk (KERN_INFO
@ -514,8 +515,6 @@ rio_timer (unsigned long data)
break;
}
np->rx_skbuff[entry] = skb;
/* 16 byte align the IP header */
skb_reserve (skb, 2);
np->rx_ring[entry].fraginfo =
cpu_to_le64 (pci_map_single
(np->pdev, skb->data, np->rx_buf_sz,
@ -576,7 +575,9 @@ alloc_list (struct net_device *dev)
/* Allocate the rx buffers */
for (i = 0; i < RX_RING_SIZE; i++) {
/* Allocated fixed size of skbuff */
struct sk_buff *skb = netdev_alloc_skb (dev, np->rx_buf_sz);
struct sk_buff *skb;
skb = netdev_alloc_skb_ip_align(dev, np->rx_buf_sz);
np->rx_skbuff[i] = skb;
if (skb == NULL) {
printk (KERN_ERR
@ -584,7 +585,6 @@ alloc_list (struct net_device *dev)
dev->name);
break;
}
skb_reserve (skb, 2); /* 16 byte align the IP header. */
/* Rubicon now supports 40 bits of addressing space. */
np->rx_ring[i].fraginfo =
cpu_to_le64 ( pci_map_single (
@ -871,13 +871,11 @@ receive_packet (struct net_device *dev)
PCI_DMA_FROMDEVICE);
skb_put (skb = np->rx_skbuff[entry], pkt_len);
np->rx_skbuff[entry] = NULL;
} else if ((skb = netdev_alloc_skb(dev, pkt_len + 2))) {
} else if ((skb = netdev_alloc_skb_ip_align(dev, pkt_len))) {
pci_dma_sync_single_for_cpu(np->pdev,
desc_to_dma(desc),
np->rx_buf_sz,
PCI_DMA_FROMDEVICE);
/* 16 byte align the IP header */
skb_reserve (skb, 2);
skb_copy_to_linear_data (skb,
np->rx_skbuff[entry]->data,
pkt_len);
@ -907,7 +905,7 @@ receive_packet (struct net_device *dev)
struct sk_buff *skb;
/* Dropped packets don't need to re-allocate */
if (np->rx_skbuff[entry] == NULL) {
skb = netdev_alloc_skb(dev, np->rx_buf_sz);
skb = netdev_alloc_skb_ip_align(dev, np->rx_buf_sz);
if (skb == NULL) {
np->rx_ring[entry].fraginfo = 0;
printk (KERN_INFO
@ -917,8 +915,6 @@ receive_packet (struct net_device *dev)
break;
}
np->rx_skbuff[entry] = skb;
/* 16 byte align the IP header */
skb_reserve (skb, 2);
np->rx_ring[entry].fraginfo =
cpu_to_le64 (pci_map_single
(np->pdev, skb->data, np->rx_buf_sz,

5
drivers/net/e100.c
View File

@ -1839,11 +1839,10 @@ static inline void e100_start_receiver(struct nic *nic, struct rx *rx)
#define RFD_BUF_LEN (sizeof(struct rfd) + VLAN_ETH_FRAME_LEN)
static int e100_rx_alloc_skb(struct nic *nic, struct rx *rx)
{
if (!(rx->skb = netdev_alloc_skb(nic->netdev, RFD_BUF_LEN + NET_IP_ALIGN)))
if (!(rx->skb = netdev_alloc_skb_ip_align(nic->netdev, RFD_BUF_LEN)))
return -ENOMEM;
/* Align, init, and map the RFD. */
skb_reserve(rx->skb, NET_IP_ALIGN);
/* Init, and map the RFD. */
skb_copy_to_linear_data(rx->skb, &nic->blank_rfd, sizeof(struct rfd));
rx->dma_addr = pci_map_single(nic->pdev, rx->skb->data,
RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);

29
drivers/net/e1000/e1000_main.c
View File

@ -3866,9 +3866,8 @@ 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 -
@ -3937,9 +3936,7 @@ 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];
@ -3951,7 +3948,7 @@ 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++;
@ -3964,7 +3961,7 @@ 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);
@ -3982,12 +3979,6 @@ 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:
@ -4044,7 +4035,7 @@ 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];
@ -4056,7 +4047,7 @@ 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++;
@ -4069,7 +4060,7 @@ 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);
@ -4088,12 +4079,6 @@ 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:

37
drivers/net/e1000e/netdev.c
View File

@ -167,7 +167,7 @@ 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];
@ -179,20 +179,13 @@ 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 (!skb) {
/* Better luck next round */
adapter->alloc_rx_buff_failed++;
break;
}
/*
* 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;
map_skb:
buffer_info->dma = pci_map_single(pdev, skb->data,
@ -284,21 +277,14 @@ static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
cpu_to_le64(ps_page->dma);
}
skb = netdev_alloc_skb(netdev,
adapter->rx_ps_bsize0 + NET_IP_ALIGN);
skb = netdev_alloc_skb_ip_align(netdev,
adapter->rx_ps_bsize0);
if (!skb) {
adapter->alloc_rx_buff_failed++;
break;
}
/*
* 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->dma = pci_map_single(pdev, skb->data,
adapter->rx_ps_bsize0,
@ -359,9 +345,7 @@ static void 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];
@ -373,19 +357,13 @@ static void 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++;
break;
}
/* 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;
check_page:
/* allocate a new page if necessary */
@ -513,9 +491,8 @@ static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
*/
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 -

9
drivers/net/ehea/ehea_main.c
View File

@ -447,7 +447,9 @@ static int ehea_refill_rq_def(struct ehea_port_res *pr,
max_index_mask = q_skba->len - 1;
for (i = 0; i < fill_wqes; i++) {
u64 tmp_addr;
struct sk_buff *skb = netdev_alloc_skb(dev, packet_size);
struct sk_buff *skb;
skb = netdev_alloc_skb_ip_align(dev, packet_size);
if (!skb) {
q_skba->os_skbs = fill_wqes - i;
if (q_skba->os_skbs == q_skba->len - 2) {
@ -457,7 +459,6 @@ static int ehea_refill_rq_def(struct ehea_port_res *pr,
}
break;
}
skb_reserve(skb, NET_IP_ALIGN);
skb_arr[index] = skb;
tmp_addr = ehea_map_vaddr(skb->data);
@ -500,7 +501,7 @@ static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
{
return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
nr_of_wqes, EHEA_RWQE2_TYPE,
EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN);
EHEA_RQ2_PKT_SIZE);
}
@ -508,7 +509,7 @@ static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
{
return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
nr_of_wqes, EHEA_RWQE3_TYPE,
EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN);
EHEA_MAX_PACKET_SIZE);
}
static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)

15
drivers/net/enic/enic_main.c
View File

@ -870,19 +870,6 @@ static void enic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf)
dev_kfree_skb_any(buf->os_buf);
}
static inline struct sk_buff *enic_rq_alloc_skb(struct net_device *netdev,
unsigned int size)
{
struct sk_buff *skb;
skb = netdev_alloc_skb(netdev, size + NET_IP_ALIGN);
if (skb)
skb_reserve(skb, NET_IP_ALIGN);
return skb;
}
static int enic_rq_alloc_buf(struct vnic_rq *rq)
{
struct enic *enic = vnic_dev_priv(rq->vdev);
@ -892,7 +879,7 @@ static int enic_rq_alloc_buf(struct vnic_rq *rq)
unsigned int os_buf_index = 0;
dma_addr_t dma_addr;
skb = enic_rq_alloc_skb(netdev, len);
skb = netdev_alloc_skb_ip_align(netdev, len);
if (!skb)
return -ENOMEM;

4
drivers/net/ethoc.c
View File

@ -404,10 +404,10 @@ static int ethoc_rx(struct net_device *dev, int limit)
if (ethoc_update_rx_stats(priv, &bd) == 0) {
int size = bd.stat >> 16;
struct sk_buff *skb = netdev_alloc_skb(dev, size);
struct sk_buff *skb;
size -= 4; /* strip the CRC */
skb_reserve(skb, 2); /* align TCP/IP header */
skb = netdev_alloc_skb_ip_align(dev, size);
if (likely(skb)) {
void *src = phys_to_virt(bd.addr);

12
drivers/net/hamachi.c
View File

@ -406,10 +406,9 @@ that case.
/* A few values that may be tweaked. */
/* Size of each temporary Rx buffer, calculated as:
* 1518 bytes (ethernet packet) + 2 bytes (to get 8 byte alignment for
* the card) + 8 bytes of status info + 8 bytes for the Rx Checksum +
* 2 more because we use skb_reserve.
* the card) + 8 bytes of status info + 8 bytes for the Rx Checksum
*/
#define PKT_BUF_SZ 1538
#define PKT_BUF_SZ 1536
/* For now, this is going to be set to the maximum size of an ethernet
* packet. Eventually, we may want to make it a variable that is
@ -1151,12 +1150,13 @@ static void hamachi_tx_timeout(struct net_device *dev)
}
/* Fill in the Rx buffers. Handle allocation failure gracefully. */
for (i = 0; i < RX_RING_SIZE; i++) {
struct sk_buff *skb = netdev_alloc_skb(dev, hmp->rx_buf_sz);
struct sk_buff *skb;
skb = netdev_alloc_skb_ip_align(dev, hmp->rx_buf_sz);
hmp->rx_skbuff[i] = skb;
if (skb == NULL)
break;
skb_reserve(skb, 2); /* 16 byte align the IP header. */
hmp->rx_ring[i].addr = cpu_to_leXX(pci_map_single(hmp->pci_dev,
skb->data, hmp->rx_buf_sz, PCI_DMA_FROMDEVICE));
hmp->rx_ring[i].status_n_length = cpu_to_le32(DescOwn |
@ -1195,7 +1195,7 @@ static void hamachi_init_ring(struct net_device *dev)
* card. -KDU
*/
hmp->rx_buf_sz = (dev->mtu <= 1492 ? PKT_BUF_SZ :
(((dev->mtu+26+7) & ~7) + 2 + 16));
(((dev->mtu+26+7) & ~7) + 16));
/* Initialize all Rx descriptors. */
for (i = 0; i < RX_RING_SIZE; i++) {

8
drivers/net/igb/igb_main.c
View File

@ -4934,18 +4934,12 @@ static void igb_alloc_rx_buffers_adv(struct igb_ring *rx_ring,
}
if (!buffer_info->skb) {
skb = netdev_alloc_skb(netdev, bufsz + NET_IP_ALIGN);
skb = netdev_alloc_skb_ip_align(netdev, bufsz);
if (!skb) {
adapter->alloc_rx_buff_failed++;
goto no_buffers;
}
/* 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->dma = pci_map_single(pdev, skb->data,
bufsz,

8
drivers/net/igbvf/netdev.c
View File

@ -170,18 +170,12 @@ static void igbvf_alloc_rx_buffers(struct igbvf_ring *rx_ring,
}
if (!buffer_info->skb) {
skb = netdev_alloc_skb(netdev, bufsz + NET_IP_ALIGN);
skb = netdev_alloc_skb_ip_align(netdev, bufsz);
if (!skb) {
adapter->alloc_rx_buff_failed++;
goto no_buffers;
}
/* 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->dma = pci_map_single(pdev, skb->data,
bufsz,

7
drivers/net/ipg.c
View File

@ -738,17 +738,12 @@ static int ipg_get_rxbuff(struct net_device *dev, int entry)
IPG_DEBUG_MSG("_get_rxbuff\n");
skb = netdev_alloc_skb(dev, sp->rxsupport_size + NET_IP_ALIGN);
skb = netdev_alloc_skb_ip_align(dev, sp->rxsupport_size);
if (!skb) {
sp->rx_buff[entry] = NULL;
return -ENOMEM;
}
/* Adjust the data start location within the buffer to
* align IP address field to a 16 byte boundary.
*/
skb_reserve(skb, NET_IP_ALIGN);
/* Associate the receive buffer with the IPG NIC. */
skb->dev = dev;

12
drivers/net/ixgb/ixgb_main.c
View File

@ -1972,9 +1972,8 @@ ixgb_clean_rx_irq(struct ixgb_adapter *adapter, int *work_done, int work_to_do)
* 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 -
@ -2057,20 +2056,13 @@ ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter, int cleaned_count)
goto map_skb;
}
skb = netdev_alloc_skb(netdev, adapter->rx_buffer_len
+ NET_IP_ALIGN);
skb = netdev_alloc_skb_ip_align(netdev, adapter->rx_buffer_len);
if (unlikely(!skb)) {
/* Better luck next round */
adapter->alloc_rx_buff_failed++;
break;
}
/* 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:

12
drivers/net/ixgbe/ixgbe_main.c
View File

@ -616,22 +616,14 @@ static void ixgbe_alloc_rx_buffers(struct ixgbe_adapter *adapter,
if (!bi->skb) {
struct sk_buff *skb;
skb = netdev_alloc_skb(adapter->netdev,
(rx_ring->rx_buf_len +
NET_IP_ALIGN));
skb = netdev_alloc_skb_ip_align(adapter->netdev,
rx_ring->rx_buf_len);
if (!skb) {
adapter->alloc_rx_buff_failed++;
goto no_buffers;
}
/*
* 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);
bi->skb = skb;
bi->dma = pci_map_single(pdev, skb->data,
rx_ring->rx_buf_len,

3
drivers/net/ixp2000/ixpdev.c
View File

@ -108,9 +108,8 @@ static int ixpdev_rx(struct net_device *dev, int processed, int budget)
if (unlikely(!netif_running(nds[desc->channel])))
goto err;
skb = netdev_alloc_skb(dev, desc->pkt_length + 2);
skb = netdev_alloc_skb_ip_align(dev, desc->pkt_length);
if (likely(skb != NULL)) {
skb_reserve(skb, 2);
skb_copy_to_linear_data(skb, buf, desc->pkt_length);
skb_put(skb, desc->pkt_length);
skb->protocol = eth_type_trans(skb, nds[desc->channel]);

5
drivers/net/korina.c
View File

@ -400,7 +400,7 @@ static int korina_rx(struct net_device *dev, int limit)
dma_cache_inv((unsigned long)pkt_buf, pkt_len - 4);
/* Malloc up new buffer. */
skb_new = netdev_alloc_skb(dev, KORINA_RBSIZE + 2);
skb_new = netdev_alloc_skb_ip_align(dev, KORINA_RBSIZE);
if (!skb_new)
break;
@ -417,9 +417,6 @@ static int korina_rx(struct net_device *dev, int limit)
if (devcs & ETH_RX_MP)
dev->stats.multicast++;
/* 16 bit align */
skb_reserve(skb_new, 2);
lp->rx_skb[lp->rx_next_done] = skb_new;
}

5
drivers/net/ks8842.c
View File

@ -357,7 +357,7 @@ static void ks8842_rx_frame(struct net_device *netdev,
/* check the status */
if ((status & RXSR_VALID) && !(status & RXSR_ERROR)) {
struct sk_buff *skb = netdev_alloc_skb(netdev, len + 2);
struct sk_buff *skb = netdev_alloc_skb_ip_align(netdev, len);
dev_dbg(&adapter->pdev->dev, "%s, got package, len: %d\n",
__func__, len);
@ -369,9 +369,6 @@ static void ks8842_rx_frame(struct net_device *netdev,
if (status & RXSR_MULTICAST)
netdev->stats.multicast++;
/* Align socket buffer in 4-byte boundary for
better performance. */
skb_reserve(skb, 2);
data = (u32 *)skb_put(skb, len);
ks8842_select_bank(adapter, 17);

11
drivers/net/lib82596.c
View File

@ -470,11 +470,11 @@ static inline int init_rx_bufs(struct net_device *dev)
for (i = 0, rbd = dma->rbds; i < rx_ring_size; i++, rbd++) {
dma_addr_t dma_addr;
struct sk_buff *skb = netdev_alloc_skb(dev, PKT_BUF_SZ + 4);
struct sk_buff *skb;
skb = netdev_alloc_skb_ip_align(dev, PKT_BUF_SZ);
if (skb == NULL)
return -1;
skb_reserve(skb, 2);
dma_addr = dma_map_single(dev->dev.parent, skb->data,
PKT_BUF_SZ, DMA_FROM_DEVICE);
rbd->v_next = rbd+1;
@ -697,12 +697,12 @@ static inline int i596_rx(struct net_device *dev)
(dma_addr_t)SWAP32(rbd->b_data),
PKT_BUF_SZ, DMA_FROM_DEVICE);
/* Get fresh skbuff to replace filled one. */
newskb = netdev_alloc_skb(dev, PKT_BUF_SZ + 4);
newskb = netdev_alloc_skb_ip_align(dev,
PKT_BUF_SZ);
if (newskb == NULL) {
skb = NULL; /* drop pkt */
goto memory_squeeze;
}
skb_reserve(newskb, 2);
/* Pass up the skb already on the Rx ring. */
skb_put(skb, pkt_len);
@ -716,7 +716,7 @@ static inline int i596_rx(struct net_device *dev)
rbd->b_data = SWAP32(dma_addr);
DMA_WBACK_INV(dev, rbd, sizeof(struct i596_rbd));
} else
skb = netdev_alloc_skb(dev, pkt_len + 2);
skb = netdev_alloc_skb_ip_align(dev, pkt_len);
memory_squeeze:
if (skb == NULL) {
/* XXX tulip.c can defer packets here!! */
@ -730,7 +730,6 @@ memory_squeeze:
dma_sync_single_for_cpu(dev->dev.parent,
(dma_addr_t)SWAP32(rbd->b_data),
PKT_BUF_SZ, DMA_FROM_DEVICE);
skb_reserve(skb, 2);
memcpy(skb_put(skb, pkt_len), rbd->v_data, pkt_len);
dma_sync_single_for_device(dev->dev.parent,
(dma_addr_t)SWAP32(rbd->b_data),

3
drivers/net/r8169.c
View File

@ -3555,13 +3555,12 @@ static inline bool rtl8169_try_rx_copy(struct sk_buff **sk_buff,
if (pkt_size >= rx_copybreak)
goto out;
skb = netdev_alloc_skb(tp->dev, pkt_size + NET_IP_ALIGN);
skb = netdev_alloc_skb_ip_align(tp->dev, pkt_size);
if (!skb)
goto out;
pci_dma_sync_single_for_cpu(tp->pci_dev, addr, pkt_size,
PCI_DMA_FROMDEVICE);
skb_reserve(skb, NET_IP_ALIGN);
skb_copy_from_linear_data(*sk_buff, skb->data, pkt_size);
*sk_buff = skb;
done = true;

4
drivers/net/sc92031.c
View File

@ -793,7 +793,7 @@ static void _sc92031_rx_tasklet(struct net_device *dev)
rx_len -= rx_size_align + 4;
skb = netdev_alloc_skb(dev, pkt_size + NET_IP_ALIGN);
skb = netdev_alloc_skb_ip_align(dev, pkt_size);
if (unlikely(!skb)) {
if (printk_ratelimit())
printk(KERN_ERR "%s: Couldn't allocate a skb_buff for a packet of size %u\n",
@ -801,8 +801,6 @@ static void _sc92031_rx_tasklet(struct net_device *dev)
goto next;
}
skb_reserve(skb, NET_IP_ALIGN);
if ((rx_ring_offset + pkt_size) > RX_BUF_LEN) {
memcpy(skb_put(skb, RX_BUF_LEN - rx_ring_offset),
rx_ring + rx_ring_offset, RX_BUF_LEN - rx_ring_offset);

7
drivers/net/sgiseeq.c
View File

@ -365,11 +365,10 @@ static inline void sgiseeq_rx(struct net_device *dev, struct sgiseeq_private *sp
}
skb_reserve(newskb, 2);
} else {
skb = netdev_alloc_skb(dev, len + 2);
if (skb) {
skb_reserve(skb, 2);
skb = netdev_alloc_skb_ip_align(dev, len);
if (skb)
skb_copy_to_linear_data(skb, rd->skb->data, len);
}
newskb = rd->skb;
}
memory_squeeze:

3
drivers/net/sis190.c
View File

@ -536,13 +536,12 @@ static bool sis190_try_rx_copy(struct sis190_private *tp,
if (pkt_size >= rx_copybreak)
goto out;
skb = netdev_alloc_skb(tp->dev, pkt_size + 2);
skb = netdev_alloc_skb_ip_align(tp->dev, pkt_size);
if (!skb)
goto out;
pci_dma_sync_single_for_cpu(tp->pci_dev, addr, tp->rx_buf_sz,
PCI_DMA_FROMDEVICE);
skb_reserve(skb, 2);
skb_copy_to_linear_data(skb, sk_buff[0]->data, pkt_size);
*sk_buff = skb;
done = true;

7
drivers/net/skge.c
View File

@ -3070,11 +3070,10 @@ static struct sk_buff *skge_rx_get(struct net_device *dev,
goto error;
if (len < RX_COPY_THRESHOLD) {
skb = netdev_alloc_skb(dev, len + 2);
skb = netdev_alloc_skb_ip_align(dev, len);
if (!skb)
goto resubmit;
skb_reserve(skb, 2);
pci_dma_sync_single_for_cpu(skge->hw->pdev,
pci_unmap_addr(e, mapaddr),
len, PCI_DMA_FROMDEVICE);
@ -3085,11 +3084,11 @@ static struct sk_buff *skge_rx_get(struct net_device *dev,
skge_rx_reuse(e, skge->rx_buf_size);
} else {
struct sk_buff *nskb;
nskb = netdev_alloc_skb(dev, skge->rx_buf_size + NET_IP_ALIGN);
nskb = netdev_alloc_skb_ip_align(dev, skge->rx_buf_size);
if (!nskb)
goto resubmit;
skb_reserve(nskb, NET_IP_ALIGN);
pci_unmap_single(skge->hw->pdev,
pci_unmap_addr(e, mapaddr),
pci_unmap_len(e, maplen),

3
drivers/net/sky2.c
View File

@ -2191,9 +2191,8 @@ static struct sk_buff *receive_copy(struct sky2_port *sky2,
{
struct sk_buff *skb;
skb = netdev_alloc_skb(sky2->netdev, length + 2);
skb = netdev_alloc_skb_ip_align(sky2->netdev, length);
if (likely(skb)) {
skb_reserve(skb, 2);
pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
length, PCI_DMA_FROMDEVICE);
skb_copy_from_linear_data(re->skb, skb->data, length);

7
drivers/net/tlan.c
View File

@ -1549,7 +1549,8 @@ static u32 TLan_HandleRxEOF( struct net_device *dev, u16 host_int )
if (tmpCStat & TLAN_CSTAT_EOC)
eoc = 1;
new_skb = netdev_alloc_skb(dev, TLAN_MAX_FRAME_SIZE + 7 );
new_skb = netdev_alloc_skb_ip_align(dev,
TLAN_MAX_FRAME_SIZE + 5);
if ( !new_skb )
goto drop_and_reuse;
@ -1563,7 +1564,6 @@ static u32 TLan_HandleRxEOF( struct net_device *dev, u16 host_int )
skb->protocol = eth_type_trans( skb, dev );
netif_rx( skb );
skb_reserve( new_skb, NET_IP_ALIGN );
head_list->buffer[0].address = pci_map_single(priv->pciDev,
new_skb->data,
TLAN_MAX_FRAME_SIZE,
@ -1967,13 +1967,12 @@ static void TLan_ResetLists( struct net_device *dev )
list->cStat = TLAN_CSTAT_READY;
list->frameSize = TLAN_MAX_FRAME_SIZE;
list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
skb = netdev_alloc_skb(dev, TLAN_MAX_FRAME_SIZE + 7 );
skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
if ( !skb ) {
pr_err("TLAN: out of memory for received data.\n" );
break;
}
skb_reserve( skb, NET_IP_ALIGN );
list->buffer[0].address = pci_map_single(priv->pciDev,
skb->data,
TLAN_MAX_FRAME_SIZE,

10
drivers/net/tsi108_eth.c
View File

@ -802,13 +802,11 @@ static int tsi108_refill_rx(struct net_device *dev, int budget)
int rx = data->rxhead;
struct sk_buff *skb;
data->rxskbs[rx] = skb = netdev_alloc_skb(dev,
TSI108_RXBUF_SIZE + 2);
skb = netdev_alloc_skb_ip_align(dev, TSI108_RXBUF_SIZE);
data->rxskbs[rx] = skb;
if (!skb)
break;
skb_reserve(skb, 2); /* Align the data on a 4-byte boundary. */
data->rxring[rx].buf0 = dma_map_single(NULL, skb->data,
TSI108_RX_SKB_SIZE,
DMA_FROM_DEVICE);
@ -1356,7 +1354,7 @@ static int tsi108_open(struct net_device *dev)
for (i = 0; i < TSI108_RXRING_LEN; i++) {
struct sk_buff *skb;
skb = netdev_alloc_skb(dev, TSI108_RXBUF_SIZE + NET_IP_ALIGN);
skb = netdev_alloc_skb_ip_align(dev, TSI108_RXBUF_SIZE);
if (!skb) {
/* Bah. No memory for now, but maybe we'll get
* some more later.
@ -1370,8 +1368,6 @@ static int tsi108_open(struct net_device *dev)
}
data->rxskbs[i] = skb;
/* Align the payload on a 4-byte boundary */
skb_reserve(skb, 2);
data->rxskbs[i] = skb;
data->rxring[i].buf0 = virt_to_phys(data->rxskbs[i]->data);
data->rxring[i].misc = TSI108_RX_OWN | TSI108_RX_INT;

8
drivers/net/via-rhine.c
View File

@ -1484,15 +1484,15 @@ static int rhine_rx(struct net_device *dev, int limit)
}
}
} else {
struct sk_buff *skb;
struct sk_buff *skb = NULL;
/* Length should omit the CRC */
int pkt_len = data_size - 4;
/* Check if the packet is long enough to accept without
copying to a minimally-sized skbuff. */
if (pkt_len < rx_copybreak &&
(skb = netdev_alloc_skb(dev, pkt_len + NET_IP_ALIGN)) != NULL) {
skb_reserve(skb, NET_IP_ALIGN); /* 16 byte align the IP header */
if (pkt_len < rx_copybreak)
skb = netdev_alloc_skb_ip_align(dev, pkt_len);
if (skb) {
pci_dma_sync_single_for_cpu(rp->pdev,
rp->rx_skbuff_dma[entry],
rp->rx_buf_sz,

3
drivers/net/via-velocity.c
View File

@ -1949,10 +1949,9 @@ static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
if (pkt_size < rx_copybreak) {
struct sk_buff *new_skb;
new_skb = netdev_alloc_skb(vptr->dev, pkt_size + 2);
new_skb = netdev_alloc_skb_ip_align(vptr->dev, pkt_size);
if (new_skb) {
new_skb->ip_summed = rx_skb[0]->ip_summed;
skb_reserve(new_skb, 2);
skb_copy_from_linear_data(*rx_skb, new_skb->data, pkt_size);
*rx_skb = new_skb;
ret = 0;

7
drivers/net/virtio_net.c
View File

@ -283,13 +283,12 @@ static bool try_fill_recv_maxbufs(struct virtnet_info *vi, gfp_t gfp)
do {
struct skb_vnet_hdr *hdr;
skb = netdev_alloc_skb(vi->dev, MAX_PACKET_LEN + NET_IP_ALIGN);
skb = netdev_alloc_skb_ip_align(vi->dev, MAX_PACKET_LEN);
if (unlikely(!skb)) {
oom = true;
break;
}
skb_reserve(skb, NET_IP_ALIGN);
skb_put(skb, MAX_PACKET_LEN);
hdr = skb_vnet_hdr(skb);
@ -344,14 +343,12 @@ static bool try_fill_recv(struct virtnet_info *vi, gfp_t gfp)
do {
skb_frag_t *f;
skb = netdev_alloc_skb(vi->dev, GOOD_COPY_LEN + NET_IP_ALIGN);
skb = netdev_alloc_skb_ip_align(vi->dev, GOOD_COPY_LEN);
if (unlikely(!skb)) {
oom = true;
break;
}
skb_reserve(skb, NET_IP_ALIGN);
f = &skb_shinfo(skb)->frags[0];
f->page = get_a_page(vi, gfp);
if (!f->page) {

13
net/core/dev.c
View File

@ -2604,20 +2604,13 @@ EXPORT_SYMBOL(napi_reuse_skb);
struct sk_buff *napi_get_frags(struct napi_struct *napi)
{
struct net_device *dev = napi->dev;
struct sk_buff *skb = napi->skb;
if (!skb) {
skb = netdev_alloc_skb(dev, GRO_MAX_HEAD + NET_IP_ALIGN);
if (!skb)
goto out;
skb_reserve(skb, NET_IP_ALIGN);
napi->skb = skb;
skb = netdev_alloc_skb_ip_align(napi->dev, GRO_MAX_HEAD);
if (skb)
napi->skb = skb;
}
out:
return skb;
}
EXPORT_SYMBOL(napi_get_frags);