summaryrefslogtreecommitdiff
path: root/include/net/mac80211.h
diff options
context:
space:
mode:
authorJohn W. Linville <linville@tuxdriver.com>2011-04-07 16:45:40 -0400
committerJohn W. Linville <linville@tuxdriver.com>2011-04-07 16:45:40 -0400
commitb37e3b6d64358604960b35e8ecbb7aed22e0926e (patch)
treef9673afc2332c15a989d3b32f002363a92ea66e1 /include/net/mac80211.h
parenta90c7a313a1c5b4fc99f987a2ae8f92ab0ae35c7 (diff)
parentbd39a274fb7b43374c797bafdb7f506598f36f77 (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
Conflicts: drivers/net/wireless/rtlwifi/efuse.c drivers/net/wireless/rtlwifi/rtl8192c/fw_common.c net/bluetooth/mgmt.c
Diffstat (limited to 'include/net/mac80211.h')
-rw-r--r--include/net/mac80211.h15
1 files changed, 13 insertions, 2 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index cefe1b37c493..965f1b16e53a 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1753,8 +1753,19 @@ enum ieee80211_ampdu_mlme_action {
* that TX/RX_STOP can pass NULL for this parameter.
* The @buf_size parameter is only valid when the action is set to
* %IEEE80211_AMPDU_TX_OPERATIONAL and indicates the peer's reorder
- * buffer size (number of subframes) for this session -- aggregates
- * containing more subframes than this may not be transmitted to the peer.
+ * buffer size (number of subframes) for this session -- the driver
+ * may neither send aggregates containing more subframes than this
+ * nor send aggregates in a way that lost frames would exceed the
+ * buffer size. If just limiting the aggregate size, this would be
+ * possible with a buf_size of 8:
+ * - TX: 1.....7
+ * - RX: 2....7 (lost frame #1)
+ * - TX: 8..1...
+ * which is invalid since #1 was now re-transmitted well past the
+ * buffer size of 8. Correct ways to retransmit #1 would be:
+ * - TX: 1 or 18 or 81
+ * Even "189" would be wrong since 1 could be lost again.
+ *
* Returns a negative error code on failure.
* The callback can sleep.
*