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author | Johannes Berg <johannes.berg@intel.com> | 2017-06-16 14:29:20 +0200 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2017-06-16 11:48:37 -0400 |
commit | 59ae1d127ac0ae404baf414c434ba2651b793f46 (patch) | |
tree | 043e71496aa7a7db86bcc8219a3a51f533aac982 /drivers/net/can/slcan.c | |
parent | b080db585384b9f037e015c0c28d1ad33be41dfc (diff) | |
download | linux-59ae1d127ac0ae404baf414c434ba2651b793f46.tar.gz linux-59ae1d127ac0ae404baf414c434ba2651b793f46.tar.bz2 linux-59ae1d127ac0ae404baf414c434ba2651b793f46.zip |
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.c | 3 |
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; |