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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/isdn/hardware/mISDN | |
| parent | b080db585384b9f037e015c0c28d1ad33be41dfc (diff) | |
| download | linux-stable-59ae1d127ac0ae404baf414c434ba2651b793f46.tar.gz linux-stable-59ae1d127ac0ae404baf414c434ba2651b793f46.tar.bz2 linux-stable-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/isdn/hardware/mISDN')
| -rw-r--r-- | drivers/isdn/hardware/mISDN/hfcmulti.c | 5 | ||||
| -rw-r--r-- | drivers/isdn/hardware/mISDN/hfcsusb.c | 2 |
2 files changed, 3 insertions, 4 deletions
diff --git a/drivers/isdn/hardware/mISDN/hfcmulti.c b/drivers/isdn/hardware/mISDN/hfcmulti.c index 961c07ee47b7..aea0c9616ea5 100644 --- a/drivers/isdn/hardware/mISDN/hfcmulti.c +++ b/drivers/isdn/hardware/mISDN/hfcmulti.c @@ -1926,7 +1926,7 @@ hfcmulti_dtmf(struct hfc_multi *hc) hh = mISDN_HEAD_P(skb); hh->prim = PH_CONTROL_IND; hh->id = DTMF_HFC_COEF; - memcpy(skb_put(skb, 512), hc->chan[ch].coeff, 512); + skb_put_data(skb, hc->chan[ch].coeff, 512); recv_Bchannel_skb(bch, skb); } } @@ -2332,8 +2332,7 @@ next_frame: skb = *sp; *sp = mI_alloc_skb(skb->len, GFP_ATOMIC); if (*sp) { - memcpy(skb_put(*sp, skb->len), - skb->data, skb->len); + skb_put_data(*sp, skb->data, skb->len); skb_trim(skb, 0); } else { printk(KERN_DEBUG "%s: No mem\n", diff --git a/drivers/isdn/hardware/mISDN/hfcsusb.c b/drivers/isdn/hardware/mISDN/hfcsusb.c index 114f3bcba1b0..17cc879ad2bb 100644 --- a/drivers/isdn/hardware/mISDN/hfcsusb.c +++ b/drivers/isdn/hardware/mISDN/hfcsusb.c @@ -893,7 +893,7 @@ hfcsusb_rx_frame(struct usb_fifo *fifo, __u8 *data, unsigned int len, } } - memcpy(skb_put(rx_skb, len), data, len); + skb_put_data(rx_skb, data, len); if (hdlc) { /* we have a complete hdlc packet */ |