[SK_BUFF]: Introduce skb_copy_from_linear_data{_offset}
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>
diff --git a/drivers/net/hamradio/dmascc.c b/drivers/net/hamradio/dmascc.c
index 0fbb414..3be8c50 100644
--- a/drivers/net/hamradio/dmascc.c
+++ b/drivers/net/hamradio/dmascc.c
@@ -930,7 +930,7 @@
/* Transfer data to DMA buffer */
i = priv->tx_head;
- memcpy(priv->tx_buf[i], skb->data + 1, skb->len - 1);
+ skb_copy_from_linear_data_offset(skb, 1, priv->tx_buf[i], skb->len - 1);
priv->tx_len[i] = skb->len - 1;
/* Clear interrupts while we touch our circular buffers */
diff --git a/drivers/net/hamradio/hdlcdrv.c b/drivers/net/hamradio/hdlcdrv.c
index f5a17ad..b33adc6 100644
--- a/drivers/net/hamradio/hdlcdrv.c
+++ b/drivers/net/hamradio/hdlcdrv.c
@@ -317,7 +317,9 @@
dev_kfree_skb_irq(skb);
break;
}
- memcpy(s->hdlctx.buffer, skb->data+1, pkt_len);
+ skb_copy_from_linear_data_offset(skb, 1,
+ s->hdlctx.buffer,
+ pkt_len);
dev_kfree_skb_irq(skb);
s->hdlctx.bp = s->hdlctx.buffer;
append_crc_ccitt(s->hdlctx.buffer, pkt_len);
diff --git a/drivers/net/hamradio/yam.c b/drivers/net/hamradio/yam.c
index ee3ea4f..ac2d6dd 100644
--- a/drivers/net/hamradio/yam.c
+++ b/drivers/net/hamradio/yam.c
@@ -638,7 +638,9 @@
dev_kfree_skb_any(skb);
break;
}
- memcpy(yp->tx_buf, skb->data + 1, yp->tx_len);
+ skb_copy_from_linear_data_offset(skb->data, 1,
+ yp->tx_buf,
+ yp->tx_len);
dev_kfree_skb_any(skb);
yp->tx_count = 0;
yp->tx_crcl = 0x21;