freebsd-nq/sys/net80211
Adrian Chadd cd0b8f2d4a Fix some corner cases in the net80211 sequence number retransmission
handling.

The current sequence number code does a few things incorrectly:

* It didn't try eliminating duplications from HT nodes. I guess it's assumed
  that out of order / retransmission handling would be handled by the AMPDU RX
  routines. If a HT node isn't doing AMPDU RX, then retransmissions need to
  be eliminated. Since most of my debugging is based on this (as AMPDU TX
  software packet aggregation isn't yet handled), handle this corner case.

* When a sequence number of 4095 was received, any subsequent sequence number
  is going to be (by definition) less than 4095. So if the following sequence
  number (0) doesn't initially occur and the retransmit is received, it's
  incorrectly eliminated by the IEEE80211_FC1_RETRY && SEQ_LEQ() check.
  Try to handle this better.

This almost completely eliminates out of order TCP statistics showing up during
iperf testing for the 11a, 11g and non-aggregate 11n AMPDU RX case. The only
other packet loss conditions leading to this are due to baseband resets or
heavy interference.
2011-05-04 02:23:59 +00:00
..
_ieee80211.h Revert r220907 and r220915. 2011-04-22 00:44:27 +00:00
ieee80211_acl.c
ieee80211_action.c
ieee80211_action.h
ieee80211_adhoc.c Fix some corner cases in the net80211 sequence number retransmission 2011-05-04 02:23:59 +00:00
ieee80211_adhoc.h
ieee80211_ageq.c
ieee80211_ageq.h
ieee80211_alq.c Implement very basic ALQ logging for net80211. 2011-04-21 03:59:37 +00:00
ieee80211_alq.h Implement very basic ALQ logging for net80211. 2011-04-21 03:59:37 +00:00
ieee80211_amrr.c
ieee80211_amrr.h
ieee80211_crypto_ccmp.c
ieee80211_crypto_none.c
ieee80211_crypto_tkip.c
ieee80211_crypto_wep.c
ieee80211_crypto.c
ieee80211_crypto.h
ieee80211_ddb.c
ieee80211_dfs.c
ieee80211_dfs.h
ieee80211_freebsd.c
ieee80211_freebsd.h
ieee80211_hostap.c Fix some corner cases in the net80211 sequence number retransmission 2011-05-04 02:23:59 +00:00
ieee80211_hostap.h
ieee80211_ht.c Constantly use MHz instead of Mhz. 2011-03-13 13:05:50 +00:00
ieee80211_ht.h
ieee80211_hwmp.c
ieee80211_input.c Add initial support for MIMO statistics to net80211. 2011-04-08 09:20:45 +00:00
ieee80211_input.h Fix some corner cases in the net80211 sequence number retransmission 2011-05-04 02:23:59 +00:00
ieee80211_ioctl.c
ieee80211_ioctl.h
ieee80211_mesh.c Fix some corner cases in the net80211 sequence number retransmission 2011-05-04 02:23:59 +00:00
ieee80211_mesh.h
ieee80211_monitor.c
ieee80211_monitor.h
ieee80211_node.c Revert r220907 and r220915. 2011-04-22 00:44:27 +00:00
ieee80211_node.h Add initial support for MIMO statistics to net80211. 2011-04-08 09:20:45 +00:00
ieee80211_output.c We need in.h for both INET and INET6, as according to RFC 3493 it 2011-04-25 16:37:47 +00:00
ieee80211_phy.c
ieee80211_phy.h
ieee80211_power.c
ieee80211_power.h
ieee80211_proto.c Fix a WME corner case found by the FreeBSD 802.11n testing crew. 2011-03-24 15:27:15 +00:00
ieee80211_proto.h Add initial support for MIMO statistics to net80211. 2011-04-08 09:20:45 +00:00
ieee80211_radiotap.c
ieee80211_radiotap.h
ieee80211_ratectl_none.c
ieee80211_ratectl.c
ieee80211_ratectl.h
ieee80211_regdomain.c
ieee80211_regdomain.h
ieee80211_rssadapt.c
ieee80211_rssadapt.h
ieee80211_scan_sta.c Fix rmax calculation during BSS selection. 2011-03-13 11:58:40 +00:00
ieee80211_scan.c
ieee80211_scan.h
ieee80211_sta.c Fix some corner cases in the net80211 sequence number retransmission 2011-05-04 02:23:59 +00:00
ieee80211_sta.h
ieee80211_superg.c
ieee80211_superg.h
ieee80211_tdma.c
ieee80211_tdma.h
ieee80211_var.h
ieee80211_wds.c Fix some corner cases in the net80211 sequence number retransmission 2011-05-04 02:23:59 +00:00
ieee80211_wds.h
ieee80211_xauth.c
ieee80211.c
ieee80211.h