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[SK_BUFF]: Introduce skb_copy_to_linear_data{_offset}

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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
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9
drivers/s390/net/qeth_main.c
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@@ -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)