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[SK_BUFF]: Introduce skb_copy_from_linear_data{_offset}

Browse source 
To clearly state the intent of copying from 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 <[email protected]>
This commit is contained in:
Arnaldo Carvalho de Melo 2007-03-27 18:55:52 -03:00 • committed by David S. Miller
commit d626f62b11
133 changed files with 321 additions and 230 deletions
Download patch file Download diff file Expand all files Collapse all files

4
drivers/atm/atmtcp.c
View file

@ -221,7 +221,7 @@ static int atmtcp_v_send(struct atm_vcc *vcc,struct sk_buff *skb)
hdr->vpi = htons(vcc->vpi);
hdr->vci = htons(vcc->vci);
hdr->length = htonl(skb->len);
memcpy(skb_put(new_skb,skb->len),skb->data,skb->len);
skb_copy_from_linear_data(skb, skb_put(new_skb, skb->len), skb->len);
if (vcc->pop) vcc->pop(vcc,skb);
else dev_kfree_skb(skb);
out_vcc->push(out_vcc,new_skb);
@ -310,7 +310,7 @@ static int atmtcp_c_send(struct atm_vcc *vcc,struct sk_buff *skb)
goto done;
}
__net_timestamp(new_skb);
memcpy(skb_put(new_skb,skb->len),skb->data,skb->len);
skb_copy_from_linear_data(skb, skb_put(new_skb, skb->len), skb->len);
out_vcc->push(out_vcc,new_skb);
atomic_inc(&vcc->stats->tx);
atomic_inc(&out_vcc->stats->rx);

6
drivers/atm/nicstar.c
View file

@ -2395,7 +2395,7 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe)
skb->destructor = ns_lb_destructor;
#endif /* NS_USE_DESTRUCTORS */
skb_push(skb, NS_SMBUFSIZE);
memcpy(skb->data, sb->data, NS_SMBUFSIZE);
skb_copy_from_linear_data(sb, skb->data, NS_SMBUFSIZE);
skb_put(skb, len - NS_SMBUFSIZE);
ATM_SKB(skb)->vcc = vcc;
__net_timestamp(skb);
@ -2479,7 +2479,7 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe)
{
/* Copy the small buffer to the huge buffer */
sb = (struct sk_buff *) iov->iov_base;
memcpy(hb->data, sb->data, iov->iov_len);
skb_copy_from_linear_data(sb, hb->data, iov->iov_len);
skb_put(hb, iov->iov_len);
remaining = len - iov->iov_len;
iov++;
@ -2491,7 +2491,7 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe)
{
lb = (struct sk_buff *) iov->iov_base;
tocopy = min_t(int, remaining, iov->iov_len);
memcpy(skb_tail_pointer(hb), lb->data, tocopy);
skb_copy_from_linear_data(lb, skb_tail_pointer(hb), tocopy);
skb_put(hb, tocopy);
iov++;
remaining -= tocopy;