[5/9] mac80211: use Probe Request template when sending a direct scan

Commit Message

Kalle Valo Jan. 3, 2010, 9:07 p.m. UTC

None

Patch

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 7e38858..9713dcb 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -989,37 +989,29 @@  void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
 	struct ieee80211_local *local = sdata->local;
 	struct sk_buff *skb;
 	struct ieee80211_mgmt *mgmt;
-	u8 *pos;
-
-	skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200 +
-			    ie_len);
-	if (!skb) {
-		printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
-		       "request\n", sdata->name);
+	size_t buf_len;
+	u8 *buf;
+
+	/* FIXME: come up with a proper value */
+	buf = kmalloc(200 + ie_len, GFP_KERNEL);
+	if (!buf) {
+		printk(KERN_DEBUG "%s: failed to allocate temporary IE "
+		       "buffer\n", sdata->name);
 		return;
 	}
-	skb_reserve(skb, local->hw.extra_tx_headroom);
 
-	mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
-	memset(mgmt, 0, 24);
-	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
-					  IEEE80211_STYPE_PROBE_REQ);
-	memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
+	buf_len = ieee80211_build_preq_ies(local, buf, ie, ie_len,
+					   local->hw.conf.channel->band);
+
+	skb = ieee80211_probereq_get(&local->hw, &sdata->vif,
+				     ssid, ssid_len,
+				     buf, buf_len);
+
 	if (dst) {
+		mgmt = (struct ieee80211_mgmt *) skb->data;
 		memcpy(mgmt->da, dst, ETH_ALEN);
 		memcpy(mgmt->bssid, dst, ETH_ALEN);
-	} else {
-		memset(mgmt->da, 0xff, ETH_ALEN);
-		memset(mgmt->bssid, 0xff, ETH_ALEN);
 	}
-	pos = skb_put(skb, 2 + ssid_len);
-	*pos++ = WLAN_EID_SSID;
-	*pos++ = ssid_len;
-	memcpy(pos, ssid, ssid_len);
-	pos += ssid_len;
-
-	skb_put(skb, ieee80211_build_preq_ies(local, pos, ie, ie_len,
-					      local->hw.conf.channel->band));
 
 	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
 	ieee80211_tx_skb(sdata, skb);