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[SK_BUFF]: Introduce skb_copy_to_linear_data{_offset} 

To clearly state the intent of copying to linear sk_buffs, _offset being a
overly long variant but interesting for the sake of saving some bytes.

Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
This commit is contained in:
Arnaldo Carvalho de Melo 2007-03-31 11:55:19 -03:00 committed by David S. Miller
parent 3dbad80ac7
commit 27d7ff46a3
63 changed files with 185 additions and 127 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/ia64/hp/sim/simeth.c
View File

@ -473,7 +473,7 @@ simeth_rx(struct net_device *dev)
* XXX Fix me
* Should really do a csum+copy here
*/
memcpy(skb->data, frame, len);
skb_copy_to_linear_data(skb, frame, len);
#endif
skb->protocol = eth_type_trans(skb, dev);

2
arch/ia64/sn/kernel/xpnet.c
View File

@ -233,7 +233,7 @@ xpnet_receive(partid_t partid, int channel, struct xpnet_message *msg)
"%lu)\n", skb->data, &msg->data,
(size_t) msg->embedded_bytes);
memcpy(skb->data, &msg->data, (size_t) msg->embedded_bytes);
skb_copy_to_linear_data(skb, &msg->data, (size_t)msg->embedded_bytes);
} else {
dev_dbg(xpnet, "transferring buffer to the skb->data area;\n\t"
"bte_copy(0x%p, 0x%p, %hu)\n", (void *)msg->buf_pa,

3
drivers/isdn/hysdn/hycapi.c
View File

@ -399,7 +399,8 @@ static u16 hycapi_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
if (_len > 22) {
_len2 = _len - 22;
skb_copy_from_linear_data(skb, msghead, 22);
memcpy(skb->data + _len2, msghead, 22);
skb_copy_to_linear_data_offset(skb, _len2,
msghead, 22);
skb_pull(skb, _len2);
CAPIMSG_SETLEN(skb->data, 22);
retval = capilib_data_b3_req(&cinfo->ncci_head,

6
drivers/net/8139too.c
View File

@ -1904,10 +1904,10 @@ static __inline__ void wrap_copy(struct sk_buff *skb, const unsigned char *ring,
u32 left = RX_BUF_LEN - offset;
if (size > left) {
memcpy(skb->data, ring + offset, left);
memcpy(skb->data+left, ring, size - left);
skb_copy_to_linear_data(skb, ring + offset, left);
skb_copy_to_linear_data_offset(skb, left, ring, size - left);
} else
memcpy(skb->data, ring + offset, size);
skb_copy_to_linear_data(skb, ring + offset, size);
}
#endif

2
drivers/net/appletalk/ltpc.c
View File

@ -774,7 +774,7 @@ static int sendup_buffer (struct net_device *dev)
skb_pull(skb,3);
/* copy ddp(s,e)hdr + contents */
memcpy(skb->data,(void*)ltdmabuf,len);
skb_copy_to_linear_data(skb, ltdmabuf, len);
skb_reset_transport_header(skb);

3
drivers/net/atari_bionet.c
View File

@ -550,7 +550,8 @@ bionet_poll_rx(struct net_device *dev) {
/* 'skb->data' points to the start of sk_buff data area.
*/
memcpy(skb->data, nic_packet->buffer, pkt_len);
skb_copy_to_linear_data(skb, nic_packet->buffer,
pkt_len);
skb->protocol = eth_type_trans( skb, dev );
netif_rx(skb);
dev->last_rx = jiffies;

3
drivers/net/atari_pamsnet.c
View File

@ -793,7 +793,8 @@ pamsnet_poll_rx(struct net_device *dev) {
/* 'skb->data' points to the start of sk_buff data area.
*/
memcpy(skb->data, nic_packet->buffer, pkt_len);
skb_copy_to_linear_data(skb, nic_packet->buffer,
pkt_len);
netif_rx(skb);
dev->last_rx = jiffies;
lp->stats.rx_packets++;

24
drivers/net/chelsio/sge.c
View File

@ -2095,10 +2095,14 @@ static void espibug_workaround_t204(unsigned long data)
0x0, 0x7, 0x43, 0x0, 0x0, 0x0
};
memcpy(skb->data + sizeof(struct cpl_tx_pkt),
ch_mac_addr, ETH_ALEN);
memcpy(skb->data + skb->len - 10,
ch_mac_addr, ETH_ALEN);
skb_copy_to_linear_data_offset(skb,
sizeof(struct cpl_tx_pkt),
ch_mac_addr,
ETH_ALEN);
skb_copy_to_linear_data_offset(skb,
skb->len - 10,
ch_mac_addr,
ETH_ALEN);
skb->cb[0] = 0xff;
}
@ -2125,10 +2129,14 @@ static void espibug_workaround(unsigned long data)
if (!skb->cb[0]) {
u8 ch_mac_addr[ETH_ALEN] =
{0x0, 0x7, 0x43, 0x0, 0x0, 0x0};
memcpy(skb->data + sizeof(struct cpl_tx_pkt),
ch_mac_addr, ETH_ALEN);
memcpy(skb->data + skb->len - 10, ch_mac_addr,
ETH_ALEN);
skb_copy_to_linear_data_offset(skb,
sizeof(struct cpl_tx_pkt),
ch_mac_addr,
ETH_ALEN);
skb_copy_to_linear_data_offset(skb,
skb->len - 10,
ch_mac_addr,
ETH_ALEN);
skb->cb[0] = 0xff;
}

6
drivers/net/cxgb3/sge.c
View File

@ -661,7 +661,7 @@ static inline struct sk_buff *get_imm_packet(const struct rsp_desc *resp)
if (skb) {
__skb_put(skb, IMMED_PKT_SIZE);
memcpy(skb->data, resp->imm_data, IMMED_PKT_SIZE);
skb_copy_to_linear_data(skb, resp->imm_data, IMMED_PKT_SIZE);
}
return skb;
}
@ -1722,11 +1722,11 @@ static void skb_data_init(struct sk_buff *skb, struct sge_fl_page *p,
{
skb->len = len;
if (len <= SKB_DATA_SIZE) {
memcpy(skb->data, p->va, len);
skb_copy_to_linear_data(skb, p->va, len);
skb->tail += len;
put_page(p->frag.page);
} else {
memcpy(skb->data, p->va, SKB_DATA_SIZE);
skb_copy_to_linear_data(skb, p->va, SKB_DATA_SIZE);
skb_shinfo(skb)->frags[0].page = p->frag.page;
skb_shinfo(skb)->frags[0].page_offset =
p->frag.page_offset + SKB_DATA_SIZE;

4
drivers/net/defxx.c
View File

@ -3091,7 +3091,9 @@ static void dfx_rcv_queue_process(
{
/* Receive buffer allocated, pass receive packet up */
memcpy(skb->data, p_buff + RCV_BUFF_K_PADDING, pkt_len+3);
skb_copy_to_linear_data(skb,
p_buff + RCV_BUFF_K_PADDING,
pkt_len + 3);
}
skb_reserve(skb,3); /* adjust data field so that it points to FC byte */

2
drivers/net/e100.c
View File

@ -1769,7 +1769,7 @@ static int e100_rx_alloc_skb(struct nic *nic, struct rx *rx)
/* Align, init, and map the RFD. */
skb_reserve(rx->skb, NET_IP_ALIGN);
memcpy(rx->skb->data, &nic->blank_rfd, sizeof(struct 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);

9
drivers/net/e1000/e1000_main.c
View File

@ -4224,9 +4224,12 @@ e1000_clean_rx_irq(struct e1000_adapter *adapter,
netdev_alloc_skb(netdev, length + NET_IP_ALIGN);
if (new_skb) {
skb_reserve(new_skb, NET_IP_ALIGN);
memcpy(new_skb->data - NET_IP_ALIGN,
skb->data - NET_IP_ALIGN,
length + NET_IP_ALIGN);
skb_copy_to_linear_data_offset(new_skb,
-NET_IP_ALIGN,
(skb->data -
NET_IP_ALIGN),
(length +
NET_IP_ALIGN));
/* save the skb in buffer_info as good */
buffer_info->skb = skb;
skb = new_skb;

4
drivers/net/ehea/ehea_main.c
View File

@ -391,8 +391,8 @@ static int ehea_poll(struct net_device *dev, int *budget)
if (!skb)
break;
}
memcpy(skb->data, ((char*)cqe) + 64,
cqe->num_bytes_transfered - 4);
skb_copy_to_linear_data(skb, ((char*)cqe) + 64,
cqe->num_bytes_transfered - 4);
ehea_fill_skb(dev, skb, cqe);
} else if (rq == 2) { /* RQ2 */
skb = get_skb_by_index(skb_arr_rq2,

2
drivers/net/irda/ali-ircc.c
View File

@ -1923,7 +1923,7 @@ static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self)
/* Copy frame without CRC, CRC is removed by hardware*/
skb_put(skb, len);
memcpy(skb->data, self->rx_buff.data, len);
skb_copy_to_linear_data(skb, self->rx_buff.data, len);
/* Move to next frame */
self->rx_buff.data += len;

2
drivers/net/irda/au1k_ir.c
View File

@ -604,7 +604,7 @@ static int au1k_irda_rx(struct net_device *dev)
skb_put(skb, count);
else
skb_put(skb, count-2);
memcpy(skb->data, (void *)pDB->vaddr, count-2);
skb_copy_to_linear_data(skb, pDB->vaddr, count - 2);
skb->dev = dev;
skb_reset_mac_header(skb);
skb->protocol = htons(ETH_P_IRDA);

4
drivers/net/irda/donauboe.c
View File

@ -1282,8 +1282,8 @@ dumpbufs(self->rx_bufs[self->rxs],len,'<');
skb_reserve (skb, 1);
skb_put (skb, len);
memcpy (skb->data, self->rx_bufs[self->rxs], len);
skb_copy_to_linear_data(skb, self->rx_bufs[self->rxs],
len);
self->stats.rx_packets++;
skb->dev = self->netdev;
skb_reset_mac_header(skb);

4
drivers/net/irda/mcs7780.c
View File

@ -426,7 +426,7 @@ static void mcs_unwrap_mir(struct mcs_cb *mcs, __u8 *buf, int len)
}
skb_reserve(skb, 1);
memcpy(skb->data, buf, new_len);
skb_copy_to_linear_data(skb, buf, new_len);
skb_put(skb, new_len);
skb_reset_mac_header(skb);
skb->protocol = htons(ETH_P_IRDA);
@ -479,7 +479,7 @@ static void mcs_unwrap_fir(struct mcs_cb *mcs, __u8 *buf, int len)
}
skb_reserve(skb, 1);
memcpy(skb->data, buf, new_len);
skb_copy_to_linear_data(skb, buf, new_len);
skb_put(skb, new_len);
skb_reset_mac_header(skb);
skb->protocol = htons(ETH_P_IRDA);

8
drivers/net/irda/nsc-ircc.c
View File

@ -1868,10 +1868,14 @@ static int nsc_ircc_dma_receive_complete(struct nsc_ircc_cb *self, int iobase)
/* Copy frame without CRC */
if (self->io.speed < 4000000) {
skb_put(skb, len-2);
memcpy(skb->data, self->rx_buff.data, len-2);
skb_copy_to_linear_data(skb,
self->rx_buff.data,
len - 2);
} else {
skb_put(skb, len-4);
memcpy(skb->data, self->rx_buff.data, len-4);
skb_copy_to_linear_data(skb,
self->rx_buff.data,
len - 4);
}
/* Move to next frame */

2
drivers/net/irda/pxaficp_ir.c
View File

@ -386,7 +386,7 @@ static void pxa_irda_fir_irq_eif(struct pxa_irda *si, struct net_device *dev, in
/* Align IP header to 20 bytes */
skb_reserve(skb, 1);
memcpy(skb->data, si->dma_rx_buff, len);
skb_copy_to_linear_data(skb, si->dma_rx_buff, len);
skb_put(skb, len);
/* Feed it to IrLAP */

2
drivers/net/irda/stir4200.c
View File

@ -348,7 +348,7 @@ static void fir_eof(struct stir_cb *stir)
}
skb_reserve(nskb, 1);
skb = nskb;
memcpy(nskb->data, rx_buff->data, len);
skb_copy_to_linear_data(nskb, rx_buff->data, len);
} else {
nskb = dev_alloc_skb(rx_buff->truesize);
if (unlikely(!nskb)) {

6
drivers/net/irda/via-ircc.c
View File

@ -1189,7 +1189,7 @@ F01_E */
skb_reserve(skb, 1);
skb_put(skb, len - 4);
memcpy(skb->data, self->rx_buff.data, len - 4);
skb_copy_to_linear_data(skb, self->rx_buff.data, len - 4);
IRDA_DEBUG(2, "%s(): len=%x.rx_buff=%p\n", __FUNCTION__,
len - 4, self->rx_buff.data);
@ -1234,7 +1234,7 @@ static int upload_rxdata(struct via_ircc_cb *self, int iobase)
}
skb_reserve(skb, 1);
skb_put(skb, len - 4 + 1);
memcpy(skb->data, self->rx_buff.data, len - 4 + 1);
skb_copy_to_linear_data(skb, self->rx_buff.data, len - 4 + 1);
st_fifo->tail++;
st_fifo->len++;
if (st_fifo->tail > MAX_RX_WINDOW)
@ -1303,7 +1303,7 @@ static int RxTimerHandler(struct via_ircc_cb *self, int iobase)
}
skb_reserve(skb, 1);
skb_put(skb, len - 4);
memcpy(skb->data, self->rx_buff.data, len - 4);
skb_copy_to_linear_data(skb, self->rx_buff.data, len - 4);
IRDA_DEBUG(2, "%s(): len=%x.head=%x\n", __FUNCTION__,
len - 4, st_fifo->head);

8
drivers/net/irda/w83977af_ir.c
View File

@ -908,10 +908,14 @@ int w83977af_dma_receive_complete(struct w83977af_ir *self)
/* Copy frame without CRC */
if (self->io.speed < 4000000) {
skb_put(skb, len-2);
memcpy(skb->data, self->rx_buff.data, len-2);
skb_copy_to_linear_data(skb,
self->rx_buff.data,
len - 2);
} else {
skb_put(skb, len-4);
memcpy(skb->data, self->rx_buff.data, len-4);
skb_copy_to_linear_data(skb,
self->rx_buff.data,
len - 4);
}
/* Move to next frame */

9
drivers/net/ixgb/ixgb_main.c
View File

@ -2017,9 +2017,12 @@ ixgb_clean_rx_irq(struct ixgb_adapter *adapter)
netdev_alloc_skb(netdev, length + NET_IP_ALIGN);
if (new_skb) {
skb_reserve(new_skb, NET_IP_ALIGN);
memcpy(new_skb->data - NET_IP_ALIGN,
skb->data - NET_IP_ALIGN,
length + NET_IP_ALIGN);
skb_copy_to_linear_data_offset(new_skb,
-NET_IP_ALIGN,
(skb->data -
NET_IP_ALIGN),
(length +
NET_IP_ALIGN));
/* save the skb in buffer_info as good */
buffer_info->skb = skb;
skb = new_skb;

3
drivers/net/loopback.c
View File

@ -94,7 +94,8 @@ static void emulate_large_send_offload(struct sk_buff *skb)
skb_set_mac_header(nskb, -ETH_HLEN);
skb_reset_network_header(nskb);
iph = ip_hdr(nskb);
memcpy(nskb->data, skb_network_header(skb), doffset);
skb_copy_to_linear_data(nskb, skb_network_header(skb),
doffset);
if (skb_copy_bits(skb,
doffset + offset,
nskb->data + doffset,

7
drivers/net/macb.c
View File

@ -367,9 +367,10 @@ static int macb_rx_frame(struct macb *bp, unsigned int first_frag,
BUG_ON(frag != last_frag);
frag_len = len - offset;
}
memcpy(skb->data + offset,
bp->rx_buffers + (RX_BUFFER_SIZE * frag),
frag_len);
skb_copy_to_linear_data_offset(skb, offset,
(bp->rx_buffers +
(RX_BUFFER_SIZE * frag)),
frag_len);
offset += RX_BUFFER_SIZE;
bp->rx_ring[frag].addr &= ~MACB_BIT(RX_USED);
wmb();

2
drivers/net/myri10ge/myri10ge.c
View File

@ -879,7 +879,7 @@ myri10ge_rx_skb_build(struct sk_buff *skb, u8 * va,
* skb_pull() (for ether_pad and eth_type_trans()) requires
* the beginning of the packet in skb_headlen(), move it
* manually */
memcpy(skb->data, va, hlen);
skb_copy_to_linear_data(skb, va, hlen);
skb_shinfo(skb)->frags[0].page_offset += hlen;
skb_shinfo(skb)->frags[0].size -= hlen;
skb->data_len -= hlen;

2
drivers/net/sk98lin/skge.c
View File

@ -2127,7 +2127,7 @@ rx_start:
(dma_addr_t) PhysAddr,
FrameLength,
PCI_DMA_FROMDEVICE);
memcpy(pNewMsg->data, pMsg, FrameLength);
skb_copy_to_linear_data(pNewMsg, pMsg, FrameLength);
pci_dma_sync_single_for_device(pAC->PciDev,
(dma_addr_t) PhysAddr,

2
drivers/net/skfp/skfddi.c
View File

@ -1937,7 +1937,7 @@ int mac_drv_rx_init(struct s_smc *smc, int len, int fc,
}
skb_reserve(skb, 3);
skb_put(skb, len);
memcpy(skb->data, look_ahead, len);
skb_copy_to_linear_data(skb, look_ahead, len);
// deliver frame to system
skb->protocol = fddi_type_trans(skb, smc->os.dev);

2
drivers/net/sun3lance.c
View File

@ -853,7 +853,7 @@ static int lance_rx( struct net_device *dev )
skb_reserve( skb, 2 ); /* 16 byte align */
skb_put( skb, pkt_len ); /* Make room */
// memcpy( skb->data, PKTBUF_ADDR(head), pkt_len );
// skb_copy_to_linear_data(skb, PKTBUF_ADDR(head), pkt_len);
eth_copy_and_sum(skb,
PKTBUF_ADDR(head),
pkt_len, 0);

4
drivers/net/tokenring/smctr.c
View File

@ -3889,7 +3889,7 @@ static int smctr_process_rx_packet(MAC_HEADER *rmf, __u16 size,
/* Slide data into a sleek skb. */
skb_put(skb, skb->len);
memcpy(skb->data, rmf, skb->len);
skb_copy_to_linear_data(skb, rmf, skb->len);
/* Update Counters */
tp->MacStat.rx_packets++;
@ -4475,7 +4475,7 @@ static int smctr_rx_frame(struct net_device *dev)
if (skb) {
skb_put(skb, rx_size);
memcpy(skb->data, pbuff, rx_size);
skb_copy_to_linear_data(skb, pbuff, rx_size);
/* Update Counters */
tp->MacStat.rx_packets++;

3
drivers/net/tokenring/tms380tr.c
View File

@ -2178,7 +2178,8 @@ static void tms380tr_rcv_status_irq(struct net_device *dev)
|| rpl->SkbStat == SKB_DMA_DIRECT))
{
if(rpl->SkbStat == SKB_DATA_COPY)
memcpy(skb->data, ReceiveDataPtr, Length);
skb_copy_to_linear_data(skb, ReceiveDataPtr,
Length);
/* Deliver frame to system */
rpl->Skb = NULL;

3
drivers/net/wan/dscc4.c
View File

@ -1904,7 +1904,8 @@ static struct sk_buff *dscc4_init_dummy_skb(struct dscc4_dev_priv *dpriv)
struct TxFD *tx_fd = dpriv->tx_fd + last;
skb->len = DUMMY_SKB_SIZE;
memcpy(skb->data, version, strlen(version)%DUMMY_SKB_SIZE);
skb_copy_to_linear_data(skb, version,
strlen(version) % DUMMY_SKB_SIZE);
tx_fd->state = FrameEnd | TO_STATE_TX(DUMMY_SKB_SIZE);
tx_fd->data = pci_map_single(dpriv->pci_priv->pdev, skb->data,
DUMMY_SKB_SIZE, PCI_DMA_TODEVICE);

2
drivers/net/wan/pc300_drv.c
View File

@ -1759,7 +1759,7 @@ cpc_trace(struct net_device *dev, struct sk_buff *skb_main, char rx_tx)
skb->pkt_type = PACKET_HOST;
skb->len = 10 + skb_main->len;
memcpy(skb->data, dev->name, 5);
skb_copy_to_linear_data(skb, dev->name, 5);
skb->data[5] = '[';
skb->data[6] = rx_tx;
skb->data[7] = ']';

4
drivers/net/wan/pc300_tty.c
View File

@ -1007,13 +1007,13 @@ static void cpc_tty_trace(pc300dev_t *dev, char* buf, int len, char rxtx)
skb->pkt_type = PACKET_HOST;
skb->len = 10 + len;
memcpy(skb->data,dev->dev->name,5);
skb_copy_to_linear_data(skb, dev->dev->name, 5);
skb->data[5] = '[';
skb->data[6] = rxtx;
skb->data[7] = ']';
skb->data[8] = ':';
skb->data[9] = ' ';
memcpy(&skb->data[10], buf, len);
skb_copy_to_linear_data_offset(skb, 10, buf, len);
netif_rx(skb);
}

2
drivers/net/wan/z85230.c
View File

@ -1656,7 +1656,7 @@ static void z8530_rx_done(struct z8530_channel *c)
else
{
skb_put(skb, ct);
memcpy(skb->data, rxb, ct);
skb_copy_to_linear_data(skb, rxb, ct);
c->stats.rx_packets++;
c->stats.rx_bytes+=ct;
}

4
drivers/net/wireless/prism54/islpci_eth.c
View File

@ -136,7 +136,7 @@ islpci_eth_transmit(struct sk_buff *skb, struct net_device *ndev)
printk("islpci_eth_transmit:wds_mac\n");
#endif
memmove(skb->data + 6, src, skb->len);
memcpy(skb->data, wds_mac, 6);
skb_copy_to_linear_data(skb, wds_mac, 6);
} else {
memmove(skb->data, src, skb->len);
}
@ -165,7 +165,7 @@ islpci_eth_transmit(struct sk_buff *skb, struct net_device *ndev)
skb_copy_from_linear_data(skb,
newskb->data + 6,
skb->len);
memcpy(newskb->data, wds_mac, 6);
skb_copy_to_linear_data(newskb, wds_mac, 6);
#ifdef ISLPCI_ETH_DEBUG
printk("islpci_eth_transmit:wds_mac\n");
#endif

9
drivers/s390/net/qeth_main.c
View File

@ -2501,7 +2501,8 @@ qeth_process_inbound_buffer(struct qeth_card *card,
vlan_tag = qeth_rebuild_skb(card, skb, hdr);
else { /*in case of OSN*/
skb_push(skb, sizeof(struct qeth_hdr));
memcpy(skb->data, hdr, sizeof(struct qeth_hdr));
skb_copy_to_linear_data(skb, hdr,
sizeof(struct qeth_hdr));
}
/* is device UP ? */
if (!(card->dev->flags & IFF_UP)){
@ -3870,9 +3871,9 @@ __qeth_prepare_skb(struct qeth_card *card, struct sk_buff *skb, int ipv)
* memcpys instead of one memmove to save cycles.
*/
skb_push(skb, VLAN_HLEN);
memcpy(skb->data, skb->data + 4, 4);
memcpy(skb->data + 4, skb->data + 8, 4);
memcpy(skb->data + 8, skb->data + 12, 4);
skb_copy_to_linear_data(skb, skb->data + 4, 4);
skb_copy_to_linear_data_offset(skb, 4, skb->data + 8, 4);
skb_copy_to_linear_data_offset(skb, 8, skb->data + 12, 4);
tag = (u16 *)(skb->data + 12);
/*
* first two bytes = ETH_P_8021Q (0x8100)

4
drivers/usb/atm/usbatm.c
View File

@ -396,7 +396,9 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char
goto out; /* atm_charge increments rx_drop */
}
memcpy(skb->data, skb_tail_pointer(sarb) - pdu_length, length);
skb_copy_to_linear_data(skb,
skb_tail_pointer(sarb) - pdu_length,
length);
__skb_put(skb, length);
vdbg("%s: sending skb 0x%p, skb->len %u, skb->truesize %u",

2
drivers/usb/net/asix.c
View File

@ -352,7 +352,7 @@ static struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
skb_push(skb, 4);
packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4);
cpu_to_le32s(&packet_len);
memcpy(skb->data, &packet_len, sizeof(packet_len));
skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
if ((skb->len % 512) == 0) {
cpu_to_le32s(&padbytes);

15
include/linux/skbuff.h
View File

@ -1521,6 +1521,21 @@ static inline void skb_copy_from_linear_data_offset(const struct sk_buff *skb,
memcpy(to, skb->data + offset, len);
}
static inline void skb_copy_to_linear_data(struct sk_buff *skb,
const void *from,
const unsigned int len)
{
memcpy(skb->data, from, len);
}
static inline void skb_copy_to_linear_data_offset(struct sk_buff *skb,
const int offset,
const void *from,
const unsigned int len)
{
memcpy(skb->data + offset, from, len);
}
extern void skb_init(void);
/**

2
net/atm/br2684.c
View File

@ -173,7 +173,7 @@ static int br2684_xmit_vcc(struct sk_buff *skb, struct br2684_dev *brdev,
}
skb_push(skb, minheadroom);
if (brvcc->encaps == e_llc)
memcpy(skb->data, llc_oui_pid_pad, 10);
skb_copy_to_linear_data(skb, llc_oui_pid_pad, 10);
else
memset(skb->data, 0, 2);
#endif /* FASTER_VERSION */

8
net/atm/lec.c
View File

@ -576,8 +576,8 @@ static int lec_atm_send(struct atm_vcc *vcc, struct sk_buff *skb)
break;
}
skb2->len = sizeof(struct atmlec_msg);
memcpy(skb2->data, mesg,
sizeof(struct atmlec_msg));
skb_copy_to_linear_data(skb2, mesg,
sizeof(*mesg));
atm_force_charge(priv->lecd, skb2->truesize);
sk = sk_atm(priv->lecd);
skb_queue_tail(&sk->sk_receive_queue, skb2);
@ -1337,7 +1337,7 @@ static int lane2_resolve(struct net_device *dev, u8 *dst_mac, int force,
if (skb == NULL)
return -1;
skb->len = *sizeoftlvs;
memcpy(skb->data, *tlvs, *sizeoftlvs);
skb_copy_to_linear_data(skb, *tlvs, *sizeoftlvs);
retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, skb);
}
return retval;
@ -1371,7 +1371,7 @@ static int lane2_associate_req(struct net_device *dev, u8 *lan_dst,
if (skb == NULL)
return 0;
skb->len = sizeoftlvs;
memcpy(skb->data, tlvs, sizeoftlvs);
skb_copy_to_linear_data(skb, tlvs, sizeoftlvs);
retval = send_to_lecd(priv, l_associate_req, NULL, NULL, skb);
if (retval != 0)
printk("lec.c: lane2_associate_req() failed\n");

11
net/atm/mpc.c
View File

@ -504,11 +504,13 @@ static int send_via_shortcut(struct sk_buff *skb, struct mpoa_client *mpc)
tagged_llc_snap_hdr.tag = entry->ctrl_info.tag;
skb_pull(skb, ETH_HLEN); /* get rid of Eth header */
skb_push(skb, sizeof(tagged_llc_snap_hdr)); /* add LLC/SNAP header */
memcpy(skb->data, &tagged_llc_snap_hdr, sizeof(tagged_llc_snap_hdr));
skb_copy_to_linear_data(skb, &tagged_llc_snap_hdr,
sizeof(tagged_llc_snap_hdr));
} else {
skb_pull(skb, ETH_HLEN); /* get rid of Eth header */
skb_push(skb, sizeof(struct llc_snap_hdr)); /* add LLC/SNAP header + tag */
memcpy(skb->data, &llc_snap_mpoa_data, sizeof(struct llc_snap_hdr));
skb_copy_to_linear_data(skb, &llc_snap_mpoa_data,
sizeof(struct llc_snap_hdr));
}
atomic_add(skb->truesize, &sk_atm(entry->shortcut)->sk_wmem_alloc);
@ -711,7 +713,8 @@ static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb)
return;
}
skb_push(new_skb, eg->ctrl_info.DH_length); /* add MAC header */
memcpy(new_skb->data, eg->ctrl_info.DLL_header, eg->ctrl_info.DH_length);
skb_copy_to_linear_data(new_skb, eg->ctrl_info.DLL_header,
eg->ctrl_info.DH_length);
new_skb->protocol = eth_type_trans(new_skb, dev);
skb_reset_network_header(new_skb);
@ -936,7 +939,7 @@ int msg_to_mpoad(struct k_message *mesg, struct mpoa_client *mpc)
if (skb == NULL)
return -ENOMEM;
skb_put(skb, sizeof(struct k_message));
memcpy(skb->data, mesg, sizeof(struct k_message));
skb_copy_to_linear_data(skb, mesg, sizeof(*mesg));
atm_force_charge(mpc->mpoad_vcc, skb->truesize);
sk = sk_atm(mpc->mpoad_vcc);

3
net/bridge/br_netfilter.c
View File

@ -149,7 +149,8 @@ int nf_bridge_copy_header(struct sk_buff *skb)
if (err)
return err;
memcpy(skb->data - header_size, skb->nf_bridge->data, header_size);
skb_copy_to_linear_data_offset(skb, -header_size,
skb->nf_bridge->data, header_size);
if (skb->protocol == htons(ETH_P_8021Q))
__skb_push(skb, VLAN_HLEN);

2
net/core/netpoll.c
View File

@ -293,7 +293,7 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
if (!skb)
return;
memcpy(skb->data, msg, len);
skb_copy_to_linear_data(skb, msg, len);
skb->len += len;
skb_push(skb, sizeof(*udph));

2
net/core/skbuff.c
View File

@ -1129,7 +1129,7 @@ int skb_store_bits(const struct sk_buff *skb, int offset, void *from, int len)
if ((copy = start - offset) > 0) {
if (copy > len)
copy = len;
memcpy(skb->data + offset, from, copy);
skb_copy_to_linear_data_offset(skb, offset, from, copy);
if ((len -= copy) == 0)
return 0;
offset += copy;

5
net/ieee80211/ieee80211_rx.c
View File

@ -759,8 +759,9 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
IEEE80211_FCTL_TODS) && skb->len >= ETH_HLEN + ETH_ALEN) {
/* Non-standard frame: get addr4 from its bogus location after
* the payload */
memcpy(skb->data + ETH_ALEN,
skb->data + skb->len - ETH_ALEN, ETH_ALEN);
skb_copy_to_linear_data_offset(skb, ETH_ALEN,
skb->data + skb->len - ETH_ALEN,
ETH_ALEN);
skb_trim(skb, skb->len - ETH_ALEN);
}
#endif

2
net/ipv4/ipcomp.c
View File

@ -66,7 +66,7 @@ static int ipcomp_decompress(struct xfrm_state *x, struct sk_buff *skb)
skb->truesize += dlen - plen;
__skb_put(skb, dlen - plen);
memcpy(skb->data, scratch, dlen);
skb_copy_to_linear_data(skb, scratch, dlen);
out:
put_cpu();
return err;

2
net/ipv4/ipmr.c
View File

@ -584,7 +584,7 @@ static int ipmr_cache_report(struct sk_buff *pkt, vifi_t vifi, int assert)
skb->network_header = skb->tail;
skb_put(skb, ihl);
memcpy(skb->data,pkt->data,ihl);
skb_copy_to_linear_data(skb, pkt->data, ihl);
ip_hdr(skb)->protocol = 0; /* Flag to the kernel this is a route add */
msg = (struct igmpmsg *)skb_network_header(skb);
msg->im_vif = vifi;

2
net/ipv4/ipvs/ip_vs_app.c
View File

@ -602,7 +602,7 @@ int ip_vs_skb_replace(struct sk_buff *skb, gfp_t pri,
skb_put(skb, diff);
memmove(skb->data + o_offset + n_len,
skb->data + o_offset + o_len, o_left);
memcpy(skb->data + o_offset, n_buf, n_len);
skb_copy_to_linear_data_offset(skb, o_offset, n_buf, n_len);
}
/* must update the iph total length here */

2
net/ipv4/netfilter/ip_queue.c
View File

@ -368,7 +368,7 @@ ipq_mangle_ipv4(ipq_verdict_msg_t *v, struct ipq_queue_entry *e)
}
if (!skb_make_writable(&e->skb, v->data_len))
return -ENOMEM;
memcpy(e->skb->data, v->payload, v->data_len);
skb_copy_to_linear_data(e->skb, v->payload, v->data_len);
e->skb->ip_summed = CHECKSUM_NONE;
return 0;

2
net/ipv6/ipcomp6.c
View File

@ -111,7 +111,7 @@ static int ipcomp6_input(struct xfrm_state *x, struct sk_buff *skb)
skb->truesize += dlen - plen;
__skb_put(skb, dlen - plen);
memcpy(skb->data, scratch, dlen);
skb_copy_to_linear_data(skb, scratch, dlen);
err = ipch->nexthdr;
out_put_cpu:

2
net/ipv6/netfilter/ip6_queue.c
View File

@ -366,7 +366,7 @@ ipq_mangle_ipv6(ipq_verdict_msg_t *v, struct ipq_queue_entry *e)
}
if (!skb_make_writable(&e->skb, v->data_len))
return -ENOMEM;
memcpy(e->skb->data, v->payload, v->data_len);
skb_copy_to_linear_data(e->skb, v->payload, v->data_len);
e->skb->ip_summed = CHECKSUM_NONE;
return 0;

2
net/irda/irttp.c
View File

@ -256,7 +256,7 @@ static struct sk_buff *irttp_reassemble_skb(struct tsap_cb *self)
* Copy all fragments to a new buffer
*/
while ((frag = skb_dequeue(&self->rx_fragments)) != NULL) {
memcpy(skb->data+n, frag->data, frag->len);
skb_copy_to_linear_data_offset(skb, n, frag->data, frag->len);
n += frag->len;
dev_kfree_skb(frag);

3
net/irda/wrapper.c
View File

@ -239,7 +239,8 @@ async_bump(struct net_device *dev,
if(docopy) {
/* Copy data without CRC (lenght already checked) */
memcpy(newskb->data, rx_buff->data, rx_buff->len - 2);
skb_copy_to_linear_data(newskb, rx_buff->data,
rx_buff->len - 2);
/* Deliver this skb */
dataskb = newskb;
} else {

2
net/netfilter/nfnetlink_queue.c
View File

@ -648,7 +648,7 @@ nfqnl_mangle(void *data, int data_len, struct nfqnl_queue_entry *e)
}
if (!skb_make_writable(&e->skb, data_len))
return -ENOMEM;
memcpy(e->skb->data, data, data_len);
skb_copy_to_linear_data(e->skb, data, data_len);
e->skb->ip_summed = CHECKSUM_NONE;
return 0;
}

4
net/netrom/nr_out.c
View File

@ -59,8 +59,8 @@ void nr_output(struct sock *sk, struct sk_buff *skb)
/* Duplicate the Transport Header */
skb_push(skbn, NR_TRANSPORT_LEN);
memcpy(skbn->data, transport, NR_TRANSPORT_LEN);
skb_copy_to_linear_data(skbn, transport,
NR_TRANSPORT_LEN);
if (skb->len > 0)
skbn->data[4] |= NR_MORE_FLAG;

2
net/rose/af_rose.c
View File

@ -1181,7 +1181,7 @@ static int rose_sendmsg(struct kiocb *iocb, struct socket *sock,
/* Duplicate the Header */
skb_push(skbn, ROSE_MIN_LEN);
memcpy(skbn->data, header, ROSE_MIN_LEN);
skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN);
if (skb->len > 0)
skbn->data[2] |= M_BIT;

46
net/tipc/link.c
View File

@ -1001,7 +1001,7 @@ static int link_bundle_buf(struct link *l_ptr,
return 0;
skb_put(bundler, pad + size);
memcpy(bundler->data + to_pos, buf->data, size);
skb_copy_to_linear_data_offset(bundler, to_pos, buf->data, size);
msg_set_size(bundler_msg, to_pos + size);
msg_set_msgcnt(bundler_msg, msg_msgcnt(bundler_msg) + 1);
dbg("Packed msg # %u(%u octets) into pos %u in buf(#%u)\n",
@ -1109,8 +1109,8 @@ int tipc_link_send_buf(struct link *l_ptr, struct sk_buff *buf)
if (bundler) {
msg_init(&bundler_hdr, MSG_BUNDLER, OPEN_MSG,
TIPC_OK, INT_H_SIZE, l_ptr->addr);
memcpy(bundler->data, (unchar *)&bundler_hdr,
INT_H_SIZE);
skb_copy_to_linear_data(bundler, &bundler_hdr,
INT_H_SIZE);
skb_trim(bundler, INT_H_SIZE);
link_bundle_buf(l_ptr, bundler, buf);
buf = bundler;
@ -1383,9 +1383,9 @@ again:
if (!buf)
return -ENOMEM;
buf->next = NULL;
memcpy(buf->data, (unchar *)&fragm_hdr, INT_H_SIZE);
skb_copy_to_linear_data(buf, &fragm_hdr, INT_H_SIZE);
hsz = msg_hdr_sz(hdr);
memcpy(buf->data + INT_H_SIZE, (unchar *)hdr, hsz);
skb_copy_to_linear_data_offset(buf, INT_H_SIZE, hdr, hsz);
msg_dbg(buf_msg(buf), ">BUILD>");
/* Chop up message: */
@ -1416,8 +1416,8 @@ error:
return -EFAULT;
}
} else
memcpy(buf->data + fragm_crs, sect_crs, sz);
skb_copy_to_linear_data_offset(buf, fragm_crs,
sect_crs, sz);
sect_crs += sz;
sect_rest -= sz;
fragm_crs += sz;
@ -1442,7 +1442,7 @@ error:
buf->next = NULL;
prev->next = buf;
memcpy(buf->data, (unchar *)&fragm_hdr, INT_H_SIZE);
skb_copy_to_linear_data(buf, &fragm_hdr, INT_H_SIZE);
fragm_crs = INT_H_SIZE;
fragm_rest = fragm_sz;
msg_dbg(buf_msg(buf)," >BUILD>");
@ -2130,7 +2130,7 @@ void tipc_link_send_proto_msg(struct link *l_ptr, u32 msg_typ, int probe_msg,
buf = l_ptr->proto_msg_queue;
if (!buf)
return;
memcpy(buf->data, (unchar *)msg, sizeof(l_ptr->proto_msg));
skb_copy_to_linear_data(buf, msg, sizeof(l_ptr->proto_msg));
return;
}
msg_set_timestamp(msg, jiffies_to_msecs(jiffies));
@ -2143,7 +2143,7 @@ void tipc_link_send_proto_msg(struct link *l_ptr, u32 msg_typ, int probe_msg,
if (!buf)
return;
memcpy(buf->data, (unchar *)msg, sizeof(l_ptr->proto_msg));
skb_copy_to_linear_data(buf, msg, sizeof(l_ptr->proto_msg));
msg_set_size(buf_msg(buf), msg_size);
if (tipc_bearer_send(l_ptr->b_ptr, buf, &l_ptr->media_addr)) {
@ -2319,8 +2319,8 @@ void tipc_link_tunnel(struct link *l_ptr,
"unable to send tunnel msg\n");
return;
}
memcpy(buf->data, (unchar *)tunnel_hdr, INT_H_SIZE);
memcpy(buf->data + INT_H_SIZE, (unchar *)msg, length);
skb_copy_to_linear_data(buf, tunnel_hdr, INT_H_SIZE);
skb_copy_to_linear_data_offset(buf, INT_H_SIZE, msg, length);
dbg("%c->%c:", l_ptr->b_ptr->net_plane, tunnel->b_ptr->net_plane);
msg_dbg(buf_msg(buf), ">SEND>");
tipc_link_send_buf(tunnel, buf);
@ -2361,7 +2361,7 @@ void tipc_link_changeover(struct link *l_ptr)
buf = buf_acquire(INT_H_SIZE);
if (buf) {
memcpy(buf->data, (unchar *)&tunnel_hdr, INT_H_SIZE);
skb_copy_to_linear_data(buf, &tunnel_hdr, INT_H_SIZE);
msg_set_size(&tunnel_hdr, INT_H_SIZE);
dbg("%c->%c:", l_ptr->b_ptr->net_plane,
tunnel->b_ptr->net_plane);
@ -2426,8 +2426,9 @@ void tipc_link_send_duplicate(struct link *l_ptr, struct link *tunnel)
"unable to send duplicate msg\n");
return;
}
memcpy(outbuf->data, (unchar *)&tunnel_hdr, INT_H_SIZE);
memcpy(outbuf->data + INT_H_SIZE, iter->data, length);
skb_copy_to_linear_data(outbuf, &tunnel_hdr, INT_H_SIZE);
skb_copy_to_linear_data_offset(outbuf, INT_H_SIZE, iter->data,
length);
dbg("%c->%c:", l_ptr->b_ptr->net_plane,
tunnel->b_ptr->net_plane);
msg_dbg(buf_msg(outbuf), ">SEND>");
@ -2457,7 +2458,7 @@ static struct sk_buff *buf_extract(struct sk_buff *skb, u32 from_pos)
eb = buf_acquire(size);
if (eb)
memcpy(eb->data, (unchar *)msg, size);
skb_copy_to_linear_data(eb, msg, size);
return eb;
}
@ -2631,9 +2632,9 @@ int tipc_link_send_long_buf(struct link *l_ptr, struct sk_buff *buf)
goto exit;
}
msg_set_size(&fragm_hdr, fragm_sz + INT_H_SIZE);
memcpy(fragm->data, (unchar *)&fragm_hdr, INT_H_SIZE);
memcpy(fragm->data + INT_H_SIZE, crs, fragm_sz);
skb_copy_to_linear_data(fragm, &fragm_hdr, INT_H_SIZE);
skb_copy_to_linear_data_offset(fragm, INT_H_SIZE, crs,
fragm_sz);
/* Send queued messages first, if any: */
l_ptr->stats.sent_fragments++;
@ -2733,8 +2734,8 @@ int tipc_link_recv_fragment(struct sk_buff **pending, struct sk_buff **fb,
if (pbuf != NULL) {
pbuf->next = *pending;
*pending = pbuf;
memcpy(pbuf->data, (unchar *)imsg, msg_data_sz(fragm));
skb_copy_to_linear_data(pbuf, imsg,
msg_data_sz(fragm));
/* Prepare buffer for subsequent fragments. */
set_long_msg_seqno(pbuf, long_msg_seq_no);
@ -2750,7 +2751,8 @@ int tipc_link_recv_fragment(struct sk_buff **pending, struct sk_buff **fb,
u32 fsz = get_fragm_size(pbuf);
u32 crs = ((msg_fragm_no(fragm) - 1) * fsz);
u32 exp_frags = get_expected_frags(pbuf) - 1;
memcpy(pbuf->data + crs, msg_data(fragm), dsz);
skb_copy_to_linear_data_offset(pbuf, crs,
msg_data(fragm), dsz);
buf_discard(fbuf);
/* Is message complete? */

7
net/tipc/msg.h
View File

@ -786,15 +786,16 @@ static inline int msg_build(struct tipc_msg *hdr,
*buf = buf_acquire(sz);
if (!(*buf))
return -ENOMEM;
memcpy((*buf)->data, (unchar *)hdr, hsz);
skb_copy_to_linear_data(*buf, hdr, hsz);
for (res = 1, cnt = 0; res && (cnt < num_sect); cnt++) {
if (likely(usrmem))
res = !copy_from_user((*buf)->data + pos,
msg_sect[cnt].iov_base,
msg_sect[cnt].iov_len);
else
memcpy((*buf)->data + pos, msg_sect[cnt].iov_base,
msg_sect[cnt].iov_len);
skb_copy_to_linear_data_offset(*buf, pos,
msg_sect[cnt].iov_base,
msg_sect[cnt].iov_len);
pos += msg_sect[cnt].iov_len;
}
if (likely(res))

8
net/tipc/port.c
View File

@ -464,7 +464,7 @@ int tipc_reject_msg(struct sk_buff *buf, u32 err)
msg_set_size(rmsg, data_sz + hdr_sz);
msg_set_nametype(rmsg, msg_nametype(msg));
msg_set_nameinst(rmsg, msg_nameinst(msg));
memcpy(rbuf->data + hdr_sz, msg_data(msg), data_sz);
skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz);
/* send self-abort message when rejecting on a connected port */
if (msg_connected(msg)) {
@ -1419,7 +1419,7 @@ int tipc_send_buf(u32 ref, struct sk_buff *buf, unsigned int dsz)
return -ENOMEM;
skb_push(buf, hsz);
memcpy(buf->data, (unchar *)msg, hsz);
skb_copy_to_linear_data(buf, msg, hsz);
destnode = msg_destnode(msg);
p_ptr->publ.congested = 1;
if (!tipc_port_congested(p_ptr)) {
@ -1555,7 +1555,7 @@ int tipc_forward_buf2name(u32 ref,
if (skb_cow(buf, LONG_H_SIZE))
return -ENOMEM;
skb_push(buf, LONG_H_SIZE);
memcpy(buf->data, (unchar *)msg, LONG_H_SIZE);
skb_copy_to_linear_data(buf, msg, LONG_H_SIZE);
msg_dbg(buf_msg(buf),"PREP:");
if (likely(destport || destnode)) {
p_ptr->sent++;
@ -1679,7 +1679,7 @@ int tipc_forward_buf2port(u32 ref,
return -ENOMEM;
skb_push(buf, DIR_MSG_H_SIZE);
memcpy(buf->data, (unchar *)msg, DIR_MSG_H_SIZE);
skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE);
msg_dbg(msg, "buf2port: ");
p_ptr->sent++;
if (dest->node == tipc_own_addr)

4
net/wanrouter/wanmain.c
View File

@ -277,8 +277,8 @@ int wanrouter_encapsulate(struct sk_buff *skb, struct net_device *dev,
skb_push(skb, 7);
skb->data[0] = 0;
skb->data[1] = NLPID_SNAP;
memcpy(&skb->data[2], wanrouter_oui_ether,
sizeof(wanrouter_oui_ether));
skb_copy_to_linear_data_offset(skb, 2, wanrouter_oui_ether,
sizeof(wanrouter_oui_ether));
*((unsigned short*)&skb->data[5]) = htons(type);
break;

2
net/x25/x25_out.c
View File

@ -89,7 +89,7 @@ int x25_output(struct sock *sk, struct sk_buff *skb)
/* Duplicate the Header */
skb_push(skbn, header_len);
memcpy(skbn->data, header, header_len);
skb_copy_to_linear_data(skbn, header, header_len);
if (skb->len > 0) {
if (x25->neighbour->extended)