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yaml --- r: 89904 b: refs/heads/master c: d0f5afb h: refs/heads/master v: v3
git-mirror · Feb 29, 2008 · 238171d · 238171d
1 parent 3cb3961
commit 238171d
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Showing 2 changed files with 13 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3330d7be7008fa8e213648750fc13613eecc54bb
+refs/heads/master: d0f5afbe6de6b8c06f94a8a0b370252e3863afe7
diff --git a/trunk/include/net/mac80211.h b/trunk/include/net/mac80211.h
@@ -793,8 +793,18 @@ static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, u8 *addr)
  * parameter to see whether multicast frames should be accepted
  * or dropped.
  *
- * All unsupported flags in @total_flags must be cleared, i.e. you
- * should clear all bits except those you honoured.
+ * All unsupported flags in @total_flags must be cleared.
+ * Hardware does not support a flag if it is incapable of _passing_
+ * the frame to the stack. Otherwise the driver must ignore
+ * the flag, but not clear it.
+ * You must _only_ clear the flag (announce no support for the
+ * flag to mac80211) if you are not able to pass the packet type
+ * to the stack (so the hardware always filters it).
+ * So for example, you should clear @FIF_CONTROL, if your hardware
+ * always filters control frames. If your hardware always passes
+ * control frames to the kernel and is incapable of filtering them,
+ * you do _not_ clear the @FIF_CONTROL flag.
+ * This rule applies to all other FIF flags as well.
  */
 
 /**