mac80211: clean up some comments

Some comments refer to 80211.o or similar; also remove
a comment about implementing fragments better, we really
have better things to do.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index e606ba0..1bed3be 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -111,7 +111,7 @@
 	hdr = (struct ieee80211_hdr *)tx->skb->data;
 	if (ieee80211_is_ctl(hdr->frame_control)) {
 		/* TODO: These control frames are not currently sent by
-		 * 80211.o, but should they be implemented, this function
+		 * mac80211, but should they be implemented, this function
 		 * needs to be updated to support duration field calculation.
 		 *
 		 * RTS: time needed to transmit pending data/mgmt frame plus
@@ -1580,19 +1580,6 @@
 	nh_pos -= skip_header_bytes;
 	h_pos -= skip_header_bytes;
 
-	/* TODO: implement support for fragments so that there is no need to
-	 * reallocate and copy payload; it might be enough to support one
-	 * extra fragment that would be copied in the beginning of the frame
-	 * data.. anyway, it would be nice to include this into skb structure
-	 * somehow
-	 *
-	 * There are few options for this:
-	 * use skb->cb as an extra space for 802.11 header
-	 * allocate new buffer if not enough headroom
-	 * make sure that there is enough headroom in every skb by increasing
-	 * build in headroom in __dev_alloc_skb() (linux/skbuff.h) and
-	 * alloc_skb() (net/core/skbuff.c)
-	 */
 	head_need = hdrlen + encaps_len + meshhdrlen - skb_headroom(skb);
 
 	/*