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authorJohannes Berg <johannes.berg@intel.com>2017-06-16 15:29:20 +0300
committerDavid S. Miller <davem@davemloft.net>2017-06-16 18:48:37 +0300
commit59ae1d127ac0ae404baf414c434ba2651b793f46 (patch)
tree043e71496aa7a7db86bcc8219a3a51f533aac982 /drivers/net/wireless/zydas
parentb080db585384b9f037e015c0c28d1ad33be41dfc (diff)
downloadlinux-59ae1d127ac0ae404baf414c434ba2651b793f46.tar.xz
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/wireless/zydas')
-rw-r--r--drivers/net/wireless/zydas/zd1201.c26
-rw-r--r--drivers/net/wireless/zydas/zd1211rw/zd_mac.c2
2 files changed, 14 insertions, 14 deletions
diff --git a/drivers/net/wireless/zydas/zd1201.c b/drivers/net/wireless/zydas/zd1201.c
index de7ff395977a..7f586d76cf17 100644
--- a/drivers/net/wireless/zydas/zd1201.c
+++ b/drivers/net/wireless/zydas/zd1201.c
@@ -326,13 +326,13 @@ static void zd1201_usbrx(struct urb *urb)
if (!(skb = dev_alloc_skb(datalen+24)))
goto resubmit;
- memcpy(skb_put(skb, 2), &data[datalen-16], 2);
- memcpy(skb_put(skb, 2), &data[datalen-2], 2);
- memcpy(skb_put(skb, 6), &data[datalen-14], 6);
- memcpy(skb_put(skb, 6), &data[datalen-22], 6);
- memcpy(skb_put(skb, 6), &data[datalen-8], 6);
- memcpy(skb_put(skb, 2), &data[datalen-24], 2);
- memcpy(skb_put(skb, len), data, len);
+ skb_put_data(skb, &data[datalen - 16], 2);
+ skb_put_data(skb, &data[datalen - 2], 2);
+ skb_put_data(skb, &data[datalen - 14], 6);
+ skb_put_data(skb, &data[datalen - 22], 6);
+ skb_put_data(skb, &data[datalen - 8], 6);
+ skb_put_data(skb, &data[datalen - 24], 2);
+ skb_put_data(skb, data, len);
skb->protocol = eth_type_trans(skb, zd->dev);
zd->dev->stats.rx_packets++;
zd->dev->stats.rx_bytes += skb->len;
@@ -359,9 +359,9 @@ static void zd1201_usbrx(struct urb *urb)
frag->skb = skb;
frag->seq = seq & IEEE80211_SCTL_SEQ;
skb_reserve(skb, 2);
- memcpy(skb_put(skb, 12), &data[datalen-14], 12);
- memcpy(skb_put(skb, 2), &data[6], 2);
- memcpy(skb_put(skb, len), data+8, len);
+ skb_put_data(skb, &data[datalen - 14], 12);
+ skb_put_data(skb, &data[6], 2);
+ skb_put_data(skb, data + 8, len);
hlist_add_head(&frag->fnode, &zd->fraglist);
goto resubmit;
}
@@ -385,9 +385,9 @@ static void zd1201_usbrx(struct urb *urb)
if (!skb)
goto resubmit;
skb_reserve(skb, 2);
- memcpy(skb_put(skb, 12), &data[datalen-14], 12);
- memcpy(skb_put(skb, 2), &data[6], 2);
- memcpy(skb_put(skb, len), data+8, len);
+ skb_put_data(skb, &data[datalen - 14], 12);
+ skb_put_data(skb, &data[6], 2);
+ skb_put_data(skb, data + 8, len);
}
skb->protocol = eth_type_trans(skb, zd->dev);
zd->dev->stats.rx_packets++;
diff --git a/drivers/net/wireless/zydas/zd1211rw/zd_mac.c b/drivers/net/wireless/zydas/zd1211rw/zd_mac.c
index fe6517a621b0..2d929d2edb00 100644
--- a/drivers/net/wireless/zydas/zd1211rw/zd_mac.c
+++ b/drivers/net/wireless/zydas/zd1211rw/zd_mac.c
@@ -1103,7 +1103,7 @@ int zd_mac_rx(struct ieee80211_hw *hw, const u8 *buffer, unsigned int length)
}
/* FIXME : could we avoid this big memcpy ? */
- memcpy(skb_put(skb, length), buffer, length);
+ skb_put_data(skb, buffer, length);
memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats));
ieee80211_rx_irqsafe(hw, skb);