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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
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2
net/x25/af_x25.c
View file

@ -951,7 +951,7 @@ int x25_rx_call_request(struct sk_buff *skb, struct x25_neigh *nb,
* Incoming Call User Data.
*/
if (skb->len >= 0) {
memcpy(makex25->calluserdata.cuddata, skb->data, skb->len);
skb_copy_from_linear_data(skb, makex25->calluserdata.cuddata, skb->len);
makex25->calluserdata.cudlength = skb->len;
}

5
net/x25/x25_in.c
View file

@ -112,8 +112,9 @@ static int x25_state1_machine(struct sock *sk, struct sk_buff *skb, int frametyp
* Copy any Call User Data.
*/
if (skb->len >= 0) {
memcpy(x25->calluserdata.cuddata, skb->data,
skb->len);
skb_copy_from_linear_data(skb,
x25->calluserdata.cuddata,
skb->len);
x25->calluserdata.cudlength = skb->len;
}
if (!sock_flag(sk, SOCK_DEAD))

4
net/x25/x25_out.c
View file

@ -61,7 +61,7 @@ int x25_output(struct sock *sk, struct sk_buff *skb)
if (skb->len - header_len > max_len) {
/* Save a copy of the Header */
memcpy(header, skb->data, header_len);
skb_copy_from_linear_data(skb, header, header_len);
skb_pull(skb, header_len);
frontlen = skb_headroom(skb);
@ -84,7 +84,7 @@ int x25_output(struct sock *sk, struct sk_buff *skb)
len = max_len > skb->len ? skb->len : max_len;
/* Copy the user data */
memcpy(skb_put(skbn, len), skb->data, len);
skb_copy_from_linear_data(skb, skb_put(skbn, len), len);
skb_pull(skb, len);
/* Duplicate the Header */