From 59ae1d127ac0ae404baf414c434ba2651b793f46 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 16 Jun 2017 14:29:20 +0200 Subject: 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 Signed-off-by: Johannes Berg Signed-off-by: David S. Miller --- drivers/staging/wlan-ng/hfa384x_usb.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'drivers/staging/wlan-ng') diff --git a/drivers/staging/wlan-ng/hfa384x_usb.c b/drivers/staging/wlan-ng/hfa384x_usb.c index a812e55ba1b0..1de67f209f2c 100644 --- a/drivers/staging/wlan-ng/hfa384x_usb.c +++ b/drivers/staging/wlan-ng/hfa384x_usb.c @@ -3530,13 +3530,11 @@ static void hfa384x_int_rxmonitor(struct wlandevice *wlandev, /* Copy the 802.11 header to the skb * (ctl frames may be less than a full header) */ - datap = skb_put(skb, hdrlen); - memcpy(datap, &rxdesc->frame_control, hdrlen); + datap = skb_put_data(skb, &rxdesc->frame_control, hdrlen); /* If any, copy the data from the card to the skb */ if (datalen > 0) { - datap = skb_put(skb, datalen); - memcpy(datap, rxfrm->data, datalen); + datap = skb_put_data(skb, rxfrm->data, datalen); /* check for unencrypted stuff if WEP bit set. */ if (*(datap - hdrlen + 1) & 0x40) /* wep set */ -- cgit v1.2.3