[SK_BUFF]: Introduce skb_copy_from_linear_data{_offset}

[deliverable/linux.git] / drivers / net / wireless / hostap / hostap_80211_tx.c

diff --git a/drivers/net/wireless/hostap/hostap_80211_tx.c b/drivers/net/wireless/hostap/hostap_80211_tx.c
index 159baef18e4abf982cda0609b4e21c9a0ec78f7c..246fac0e80010bf4537417f0093b6a8d682bffdd 100644 (file)
--- a/drivers/net/wireless/hostap/hostap_80211_tx.c
+++ b/drivers/net/wireless/hostap/hostap_80211_tx.c
@@ -146,7 +146,8 @@ int hostap_data_start_xmit(struct sk_buff *skb, struct net_device *dev)
                        fc |= IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS;
                        /* From&To DS: Addr1 = RA, Addr2 = TA, Addr3 = DA,
                         * Addr4 = SA */
-                       memcpy(&hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN);
+                       skb_copy_from_linear_data_offset(skb, ETH_ALEN,
+                                                        &hdr.addr4, ETH_ALEN);
                        hdr_len += ETH_ALEN;
                } else {
                        /* bogus 4-addr format to workaround Prism2 station
@@ -159,7 +160,8 @@ int hostap_data_start_xmit(struct sk_buff *skb, struct net_device *dev)
                        /* SA from skb->data + ETH_ALEN will be added after
                         * frame payload; use hdr.addr4 as a temporary buffer
                         */
-                       memcpy(&hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN);
+                       skb_copy_from_linear_data_offset(skb, ETH_ALEN,
+                                                        &hdr.addr4, ETH_ALEN);
                        need_tailroom += ETH_ALEN;
                }
 
@@ -174,24 +176,27 @@ int hostap_data_start_xmit(struct sk_buff *skb, struct net_device *dev)
                else
                        memcpy(&hdr.addr1, local->bssid, ETH_ALEN);
                memcpy(&hdr.addr2, dev->dev_addr, ETH_ALEN);
-               memcpy(&hdr.addr3, skb->data, ETH_ALEN);
+               skb_copy_from_linear_data(skb, &hdr.addr3, ETH_ALEN);
        } else if (local->iw_mode == IW_MODE_MASTER && !to_assoc_ap) {
                fc |= IEEE80211_FCTL_FROMDS;
                /* From DS: Addr1 = DA, Addr2 = BSSID, Addr3 = SA */
-               memcpy(&hdr.addr1, skb->data, ETH_ALEN);
+               skb_copy_from_linear_data(skb, &hdr.addr1, ETH_ALEN);
                memcpy(&hdr.addr2, dev->dev_addr, ETH_ALEN);
-               memcpy(&hdr.addr3, skb->data + ETH_ALEN, ETH_ALEN);
+               skb_copy_from_linear_data_offset(skb, ETH_ALEN, &hdr.addr3,
+                                                ETH_ALEN);
        } else if (local->iw_mode == IW_MODE_INFRA || to_assoc_ap) {
                fc |= IEEE80211_FCTL_TODS;
                /* To DS: Addr1 = BSSID, Addr2 = SA, Addr3 = DA */
                memcpy(&hdr.addr1, to_assoc_ap ?
                       local->assoc_ap_addr : local->bssid, ETH_ALEN);
-               memcpy(&hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
-               memcpy(&hdr.addr3, skb->data, ETH_ALEN);
+               skb_copy_from_linear_data_offset(skb, ETH_ALEN, &hdr.addr2,
+                                                ETH_ALEN);
+               skb_copy_from_linear_data(skb, &hdr.addr3, ETH_ALEN);
        } else if (local->iw_mode == IW_MODE_ADHOC) {
                /* not From/To DS: Addr1 = DA, Addr2 = SA, Addr3 = BSSID */
-               memcpy(&hdr.addr1, skb->data, ETH_ALEN);
-               memcpy(&hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
+               skb_copy_from_linear_data(skb, &hdr.addr1, ETH_ALEN);
+               skb_copy_from_linear_data_offset(skb, ETH_ALEN, &hdr.addr2,
+                                                ETH_ALEN);
                memcpy(&hdr.addr3, local->bssid, ETH_ALEN);
        }