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authorJohannes Berg <johannes.berg@intel.com>2017-06-16 14:29:20 +0200
committerDavid S. Miller <davem@davemloft.net>2017-06-16 11:48:37 -0400
commit59ae1d127ac0ae404baf414c434ba2651b793f46 (patch)
tree043e71496aa7a7db86bcc8219a3a51f533aac982 /drivers/net/caif
parentb080db585384b9f037e015c0c28d1ad33be41dfc (diff)
downloadlinux-59ae1d127ac0ae404baf414c434ba2651b793f46.tar.bz2
networking: introduce and use skb_put_data()
A common pattern with skb_put() is to just want to memcpy() some data into the new space, introduce skb_put_data() for this. An spatch similar to the one for skb_put_zero() converts many of the places using it: @@ identifier p, p2; expression len, skb, data; type t, t2; @@ ( -p = skb_put(skb, len); +p = skb_put_data(skb, data, len); | -p = (t)skb_put(skb, len); +p = skb_put_data(skb, data, len); ) ( p2 = (t2)p; -memcpy(p2, data, len); | -memcpy(p, data, len); ) @@ type t, t2; identifier p, p2; expression skb, data; @@ t *p; ... ( -p = skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); | -p = (t *)skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); ) ( p2 = (t2)p; -memcpy(p2, data, sizeof(*p)); | -memcpy(p, data, sizeof(*p)); ) @@ expression skb, len, data; @@ -memcpy(skb_put(skb, len), data, len); +skb_put_data(skb, data, len); (again, manually post-processed to retain some comments) Reviewed-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/caif')
-rw-r--r--drivers/net/caif/caif_hsi.c6
-rw-r--r--drivers/net/caif/caif_serial.c3
-rw-r--r--drivers/net/caif/caif_spi.c3
-rw-r--r--drivers/net/caif/caif_virtio.c2
4 files changed, 5 insertions, 9 deletions
diff --git a/drivers/net/caif/caif_hsi.c b/drivers/net/caif/caif_hsi.c
index 71a7c3b44fdd..4534326e20ac 100644
--- a/drivers/net/caif/caif_hsi.c
+++ b/drivers/net/caif/caif_hsi.c
@@ -454,8 +454,7 @@ static int cfhsi_rx_desc(struct cfhsi_desc *desc, struct cfhsi *cfhsi)
}
caif_assert(skb != NULL);
- dst = skb_put(skb, len);
- memcpy(dst, pfrm, len);
+ dst = skb_put_data(skb, pfrm, len);
skb->protocol = htons(ETH_P_CAIF);
skb_reset_mac_header(skb);
@@ -585,8 +584,7 @@ static int cfhsi_rx_pld(struct cfhsi_desc *desc, struct cfhsi *cfhsi)
}
caif_assert(skb != NULL);
- dst = skb_put(skb, len);
- memcpy(dst, pcffrm, len);
+ dst = skb_put_data(skb, pcffrm, len);
skb->protocol = htons(ETH_P_CAIF);
skb_reset_mac_header(skb);
diff --git a/drivers/net/caif/caif_serial.c b/drivers/net/caif/caif_serial.c
index 76e1d3545105..5c57be2082ba 100644
--- a/drivers/net/caif/caif_serial.c
+++ b/drivers/net/caif/caif_serial.c
@@ -198,8 +198,7 @@ static void ldisc_receive(struct tty_struct *tty, const u8 *data,
skb = netdev_alloc_skb(ser->dev, count+1);
if (skb == NULL)
return;
- p = skb_put(skb, count);
- memcpy(p, data, count);
+ p = skb_put_data(skb, data, count);
skb->protocol = htons(ETH_P_CAIF);
skb_reset_mac_header(skb);
diff --git a/drivers/net/caif/caif_spi.c b/drivers/net/caif/caif_spi.c
index fc21afe852b9..24a5f5ca2037 100644
--- a/drivers/net/caif/caif_spi.c
+++ b/drivers/net/caif/caif_spi.c
@@ -548,8 +548,7 @@ int cfspi_rxfrm(struct cfspi *cfspi, u8 *buf, size_t len)
skb = netdev_alloc_skb(cfspi->ndev, pkt_len + 1);
caif_assert(skb != NULL);
- dst = skb_put(skb, pkt_len);
- memcpy(dst, src, pkt_len);
+ dst = skb_put_data(skb, src, pkt_len);
src += pkt_len;
skb->protocol = htons(ETH_P_CAIF);
diff --git a/drivers/net/caif/caif_virtio.c b/drivers/net/caif/caif_virtio.c
index 1794ea0420b7..c3d104feee13 100644
--- a/drivers/net/caif/caif_virtio.c
+++ b/drivers/net/caif/caif_virtio.c
@@ -242,7 +242,7 @@ static struct sk_buff *cfv_alloc_and_copy_skb(int *err,
skb_reserve(skb, cfv->rx_hr + pad_len);
- memcpy(skb_put(skb, cfpkt_len), frm + cfv->rx_hr, cfpkt_len);
+ skb_put_data(skb, frm + cfv->rx_hr, cfpkt_len);
return skb;
}