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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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8
net/ieee80211/ieee80211_tx.c
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@ -309,8 +309,8 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
}
/* Save source and destination addresses */
memcpy(dest, skb->data, ETH_ALEN);
memcpy(src, skb->data + ETH_ALEN, ETH_ALEN);
skb_copy_from_linear_data(skb, dest, ETH_ALEN);
skb_copy_from_linear_data_offset(skb, ETH_ALEN, src, ETH_ALEN);
if (host_encrypt || host_build_iv)
fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA |
@ -363,7 +363,7 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
snapped = 1;
ieee80211_copy_snap(skb_put(skb_new, SNAP_SIZE + sizeof(u16)),
ether_type);
memcpy(skb_put(skb_new, skb->len), skb->data, skb->len);
skb_copy_from_linear_data(skb, skb_put(skb_new, skb->len), skb->len);
res = crypt->ops->encrypt_msdu(skb_new, hdr_len, crypt->priv);
if (res < 0) {
IEEE80211_ERROR("msdu encryption failed\n");
@ -492,7 +492,7 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
bytes -= SNAP_SIZE + sizeof(u16);
}
memcpy(skb_put(skb_frag, bytes), skb->data, bytes);
skb_copy_from_linear_data(skb, skb_put(skb_frag, bytes), bytes);
/* Advance the SKB... */
skb_pull(skb, bytes);