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  1. 26 1月, 2010 1 次提交
    • W
      iwlwifi: add function to reset/tune radio if needed · afbdd69a
      由 Wey-Yi Guy 提交于 
      Adding "radio reset" function to help reset and stabilize the radio.

During normal operation, sometime for unknown reason, radio encounter
problem and can not recover by itself; the best way to
recover from it is to reset and re-tune the radio. Currently, there is
no RF reset command available, but since radio will get reset when
switching channel, use internal hw scan request to force radio
reset and get back to normal operation state.

The internal hw scan will only perform passive scan on the first
available channel (not the channel being used) in associated state. The
request should be ignored if already performing scan operation or STA is
not in associated state.

Also include an "internal_scan" debugfs file to help trigger the
internal scan from user mode.
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      afbdd69a
  3. 20 1月, 2010 2 次提交
  5. 06 1月, 2010 1 次提交
  7. 29 12月, 2009 1 次提交
  9. 23 12月, 2009 1 次提交
  11. 22 12月, 2009 2 次提交
  13. 05 12月, 2009 1 次提交
  15. 24 11月, 2009 5 次提交
  17. 19 11月, 2009 1 次提交
  19. 12 11月, 2009 1 次提交
  21. 11 11月, 2009 1 次提交
    • W
      iwlwifi: Use RTS/CTS as the preferred protection mechanism for 6000 series · 73871f71
      由 Wey-Yi Guy 提交于 
      When 802.11g was introduced, we had RTS/CTS and CTS-to-Self protection
mechanisms. In an HT Beacon, HT stations use the "Operating Mode" field
in the HT Information Element to determine whether or not to use
protection.

The Operating Mode field has 4 possible settings: 0-3:
Mode 0: If all stations in the BSS are 20/40 MHz HT capable, or if the
BSS is 20/40 MHz capable, or if all stations in the BSS are 20 MHz HT
stations in a 20 MHz BSS
Mode 1: used if there are non-HT stations or APs using the primary or
secondary channels
Mode 2: if only HT stations are associated in the BSS and at least one
20 MHz HT station is associated.
Mode 3: used if one or more non-HT stations are associated in the BSS.

When in operating modes 1 or 3, and the Use_Protection field is 1 in the
Beacon's ERP IE, all HT transmissions must be protected using RTS/CTS or
CTS-to-Self.

By default, CTS-to-self is the preferred protection mechanism for less
overhead and higher throughput; but using the full RTS/CTS will better
protect the inner exchange from interference, especially in
highly-congested environment.

For 6000 series WIFI NIC, RTS/CTS protection mechanism is the
recommended choice for HT traffic based on the HW design.
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Cc: stable@kernel.org
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      73871f71
  23. 03 11月, 2009 3 次提交
  25. 28 10月, 2009 9 次提交
  27. 08 10月, 2009 9 次提交
  29. 29 9月, 2009 1 次提交
    • R
      iwlwifi: fix 3945 ucode info retrieval after failure · b7a79404
      由 Reinette Chatre 提交于 
      When hardware or uCode problem occurs driver captures significant
information from device to enable debugging. The format of this information
is different between 3945 and 4965 and later devices, yet currently the
3945 uses the 4965 and later format. Fix this by adding a new library call
that is initialized to the correct formatting routine based on device.

This moves the iwlagn event and error log handling back to iwl-agn.c to
make it part of iwlagn module.

Also remove the 3945 sysfs file that triggers dump of event log - there is
already a debugfs file that can do it for all drivers.
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      b7a79404
  31. 23 9月, 2009 1 次提交