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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/can/slcan.c
parentb080db585384b9f037e015c0c28d1ad33be41dfc (diff)
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/can/slcan.c')
-rw-r--r--drivers/net/can/slcan.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/net/can/slcan.c b/drivers/net/can/slcan.c
index 6a6e896e52fa..5d067c1b987f 100644
--- a/drivers/net/can/slcan.c
+++ b/drivers/net/can/slcan.c
@@ -216,8 +216,7 @@ static void slc_bump(struct slcan *sl)
can_skb_prv(skb)->ifindex = sl->dev->ifindex;
can_skb_prv(skb)->skbcnt = 0;
- memcpy(skb_put(skb, sizeof(struct can_frame)),
- &cf, sizeof(struct can_frame));
+ skb_put_data(skb, &cf, sizeof(struct can_frame));
sl->dev->stats.rx_packets++;
sl->dev->stats.rx_bytes += cf.can_dlc;