linux/net/can
Johannes Berg 59ae1d127a 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>
2017-06-16 11:48:37 -04:00
..
af_can.c can: af_can: namespace support: fix lockdep splat: properly initialize spin_lock 2017-06-09 11:39:23 +02:00
af_can.h can: complete initial namespace support 2017-04-25 09:04:29 +02:00
bcm.c networking: introduce and use skb_put_data() 2017-06-16 11:48:37 -04:00
gw.c can: network namespace support for CAN gateway 2017-04-25 09:04:30 +02:00
Kconfig can: Kconfig: switch on all CAN protocolls by default 2013-01-26 16:58:58 +01:00
Makefile can: build proc support only if CONFIG_PROC_FS is activated 2016-06-17 15:39:41 +02:00
proc.c can: complete initial namespace support 2017-04-25 09:04:29 +02:00
raw.c can: initial support for network namespaces 2017-04-04 17:35:58 +02:00