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authorArnaldo Carvalho de Melo <acme@redhat.com>2007-03-27 18:55:52 -0300
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-25 22:28:23 -0700
commitd626f62b11e00c16e81e4308ab93d3f13551812a (patch)
treefac4af6ced853755e12fc709d55f0c2bec51265d /drivers/s390
parent2a123b86e2b242a4a6db990d2851d45e192f88e5 (diff)
downloadop-kernel-dev-d626f62b11e00c16e81e4308ab93d3f13551812a.zip
op-kernel-dev-d626f62b11e00c16e81e4308ab93d3f13551812a.tar.gz
[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>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/net/ctcmain.c13
-rw-r--r--drivers/s390/net/lcs.c2
-rw-r--r--drivers/s390/net/netiucv.c7
-rw-r--r--drivers/s390/net/qeth_eddp.c3
4 files changed, 16 insertions, 9 deletions
diff --git a/drivers/s390/net/ctcmain.c b/drivers/s390/net/ctcmain.c
index 54e3f80..b0f813e 100644
--- a/drivers/s390/net/ctcmain.c
+++ b/drivers/s390/net/ctcmain.c
@@ -472,7 +472,8 @@ ctc_unpack_skb(struct channel *ch, struct sk_buff *pskb)
privptr->stats.rx_dropped++;
return;
}
- memcpy(skb_put(skb, pskb->len), pskb->data, pskb->len);
+ skb_copy_from_linear_data(pskb, skb_put(skb, pskb->len),
+ pskb->len);
skb_reset_mac_header(skb);
skb->dev = pskb->dev;
skb->protocol = pskb->protocol;
@@ -716,8 +717,9 @@ ch_action_txdone(fsm_instance * fi, int event, void *arg)
*((__u16 *) skb_put(ch->trans_skb, 2)) = ch->collect_len + 2;
i = 0;
while ((skb = skb_dequeue(&ch->collect_queue))) {
- memcpy(skb_put(ch->trans_skb, skb->len), skb->data,
- skb->len);
+ skb_copy_from_linear_data(skb, skb_put(ch->trans_skb,
+ skb->len),
+ skb->len);
privptr->stats.tx_packets++;
privptr->stats.tx_bytes += skb->len - LL_HEADER_LENGTH;
atomic_dec(&skb->users);
@@ -2268,8 +2270,9 @@ transmit_skb(struct channel *ch, struct sk_buff *skb)
skb_reset_tail_pointer(ch->trans_skb);
ch->trans_skb->len = 0;
ch->ccw[1].count = skb->len;
- memcpy(skb_put(ch->trans_skb, skb->len), skb->data,
- skb->len);
+ skb_copy_from_linear_data(skb, skb_put(ch->trans_skb,
+ skb->len),
+ skb->len);
atomic_dec(&skb->users);
dev_kfree_skb_irq(skb);
ccw_idx = 0;
diff --git a/drivers/s390/net/lcs.c b/drivers/s390/net/lcs.c
index 1c23e18..08a994f 100644
--- a/drivers/s390/net/lcs.c
+++ b/drivers/s390/net/lcs.c
@@ -1576,7 +1576,7 @@ __lcs_start_xmit(struct lcs_card *card, struct sk_buff *skb,
header->offset = card->tx_buffer->count;
header->type = card->lan_type;
header->slot = card->portno;
- memcpy(header + 1, skb->data, skb->len);
+ skb_copy_from_linear_data(skb, header + 1, skb->len);
spin_unlock(&card->lock);
card->stats.tx_bytes += skb->len;
card->stats.tx_packets++;
diff --git a/drivers/s390/net/netiucv.c b/drivers/s390/net/netiucv.c
index cd42bd5..e10e85e 100644
--- a/drivers/s390/net/netiucv.c
+++ b/drivers/s390/net/netiucv.c
@@ -645,7 +645,8 @@ static void netiucv_unpack_skb(struct iucv_connection *conn,
privptr->stats.rx_dropped++;
return;
}
- memcpy(skb_put(skb, pskb->len), pskb->data, pskb->len);
+ skb_copy_from_linear_data(pskb, skb_put(skb, pskb->len),
+ pskb->len);
skb_reset_mac_header(skb);
skb->dev = pskb->dev;
skb->protocol = pskb->protocol;
@@ -744,7 +745,9 @@ static void conn_action_txdone(fsm_instance *fi, int event, void *arg)
header.next = conn->tx_buff->len + skb->len + NETIUCV_HDRLEN;
memcpy(skb_put(conn->tx_buff, NETIUCV_HDRLEN), &header,
NETIUCV_HDRLEN);
- memcpy(skb_put(conn->tx_buff, skb->len), skb->data, skb->len);
+ skb_copy_from_linear_data(skb,
+ skb_put(conn->tx_buff, skb->len),
+ skb->len);
txbytes += skb->len;
txpackets++;
stat_maxcq++;
diff --git a/drivers/s390/net/qeth_eddp.c b/drivers/s390/net/qeth_eddp.c
index 5890bb5..dd7034f 100644
--- a/drivers/s390/net/qeth_eddp.c
+++ b/drivers/s390/net/qeth_eddp.c
@@ -267,7 +267,8 @@ qeth_eddp_copy_data_tcp(char *dst, struct qeth_eddp_data *eddp, int len,
QETH_DBF_TEXT(trace, 5, "eddpcdtc");
if (skb_shinfo(eddp->skb)->nr_frags == 0) {
- memcpy(dst, eddp->skb->data + eddp->skb_offset, len);
+ skb_copy_from_linear_data_offset(eddp->skb, eddp->skb_offset,
+ dst, len);
*hcsum = csum_partial(eddp->skb->data + eddp->skb_offset, len,
*hcsum);
eddp->skb_offset += len;
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