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[SK_BUFF]: Introduce skb_copy_from_linear_data{_offset}

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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 <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
2007-03-27 18:55:52 -03:00
committed by David S. Miller
parent 2a123b86e2
commit d626f62b11
133 changed files with 321 additions and 230 deletions
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7
drivers/net/via-velocity.c
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@@ -1339,7 +1339,8 @@ static inline int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN)
skb_reserve(new_skb, 2);
memcpy(new_skb->data, rx_skb[0]->data, pkt_size);
skb_copy_from_linear_data(rx_skb[0], new_skb->data,
pkt_size);
*rx_skb = new_skb;
ret = 0;
}
@@ -1927,7 +1928,7 @@ static int velocity_xmit(struct sk_buff *skb, struct net_device *dev)
if (pktlen < ETH_ZLEN) {
/* Cannot occur until ZC support */
pktlen = ETH_ZLEN;
memcpy(tdinfo->buf, skb->data, skb->len);
skb_copy_from_linear_data(skb, tdinfo->buf, skb->len);
memset(tdinfo->buf + skb->len, 0, ETH_ZLEN - skb->len);
tdinfo->skb = skb;
tdinfo->skb_dma[0] = tdinfo->buf_dma;
@@ -1943,7 +1944,7 @@ static int velocity_xmit(struct sk_buff *skb, struct net_device *dev)
int nfrags = skb_shinfo(skb)->nr_frags;
tdinfo->skb = skb;
if (nfrags > 6) {
memcpy(tdinfo->buf, skb->data, skb->len);
skb_copy_from_linear_data(skb, tdinfo->buf, skb->len);
tdinfo->skb_dma[0] = tdinfo->buf_dma;
td_ptr->tdesc0.pktsize =
td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);