[SK_BUFF]: Introduce skb_copy_to_linear_data{_offset}

To clearly state the intent of copying to linear sk_buffs, _offset being a
overly long variant but interesting for the sake of saving some bytes.

Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/net/ieee80211/ieee80211_rx.c b/net/ieee80211/ieee80211_rx.c
index 94e2b8e2ab26..6ae036b1920f 100644
--- a/net/ieee80211/ieee80211_rx.c
+++ b/net/ieee80211/ieee80211_rx.c
@@ -759,8 +759,9 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
                     IEEE80211_FCTL_TODS) && skb->len >= ETH_HLEN + ETH_ALEN) {
                 /* Non-standard frame: get addr4 from its bogus location after
                  * the payload */
-                memcpy(skb->data + ETH_ALEN,
-                       skb->data + skb->len - ETH_ALEN, ETH_ALEN);
+                skb_copy_to_linear_data_offset(skb, ETH_ALEN,
+                                               skb->data + skb->len - ETH_ALEN,
+                                               ETH_ALEN);
                 skb_trim(skb, skb->len - ETH_ALEN);
         }
 #endif