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path: root/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
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2009-06-04iwlwifi: add value and range define for link quality commandWey-Yi Guy
Instead of hardcoding the link quality parameters inside the functions, adding #define in iwl-commands.h to shared by different functions. Also include the valid range for number of link quality parameters. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-04iwlwifi: unify station managementTomas Winkler
This patch unifies 3945 and AGN station management It also removes useless struct iwl_station_mgmt ops and cleanups a bit the interface Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Tested-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-05-22iwlwifi: report the rate index as an MCS rate numberWey-Yi Guy
If transmit in HT rate, report the rate index as an MCS rate number instead of an index. so "iw" can display correct BitRate Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-05-22iwlwifi: add Greenfield support for 11nWey-Yi Guy
Add "Greenfield" support for all devices except 4965 and 3945. "Greenfield" is part of 11n features to improve HT performance. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-05-11iwlagn: show current rate scale data in debugfsWey-Yi Guy
Add "rate_scale_data" debugfs file to show current bit rate (HT and Legacy), plus additional information (rssi, noise, tsf, beacon time stamp). Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-05-11iwlagn: improve rate scale table searchMohamed Abbas
iwlagn rate scaling will periodically search other rate scale tables to switch to the best table regarding performance. In the past the number of search tables were 3. Every time the rate scale algorithm goes through these available tables in will stay in current table for some time before start searching again. Recent driver support more feature and antenna, so we have more tables to search. This patch make sure we go through all available tables. Signed-off-by: Mohamed Abbas <mohamed.abbas@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-05-06iwlwifi: "is_fat" bit in rate scale match RXON flagWey-Yi Guy
This patch change the "is_fat" checking in rate scale to use iwl_is_fat_tx_allowed() to match the sta and RX_ON command setting. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Tested-by: Conrad Kostecki <ConiKost@gmx.de> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-05-06iwlwifi: Fix handling of retry count of NO_ACK frames in iwl-{3945|agn}-rsGábor Stefanik
Make iwl-{3945|agn}-rs check for IEEE80211_TX_CTL_NO_ACK instead of is_multicast_ether_addr when determining whether to use the lowest rate, and set the retry count to 0 (total try count = 1) if IEEE80211_TX_CTL_NO_ACK is set. Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-04-22iwlcore: Fix stay in table function.Mohamed Abbas
Function rs_stay_in_table was flushing the rate scale table way to early. time_after macro in expecting long value and was failing because we passing u32 value. Signed-off-by: Mohamed Abbas <mohamed.abbas@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-04-22iwlwifi: do not set dual_stream_ant_msk for 3 streamsDaniel C Halperin
This patch fixes a bug introduced by commit "iwlwifi: adding MIMO3 support in rate scaling". We should not set the dual_stream_ant_msk (for 2x2 MIMO) when using a 3x3 rate, this will cause a SYSASSERT in uCode. Note: there is no triple_stream_ant_msk, because all three antennas are used. Signed-off-by: Daniel C Halperin <daniel.c.halperin@intel.com> Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-04-22iwlwifi: Display decoded rate/mcs informationWey-Yi Guy
This patch adding MCS information in rate_scale_table, it help for debugging rate scaling algorithm, easy to understand what is the current rate scale table and matching modulation, plus the last mcs used for tx. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-04-22iwl3945/iwlwifi: unify add_station functionAbhijeet Kolekar
Patch unifies the add_station function for 3945 and iwlwifi drivers. Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-04-22iwlwifi: use station management opsAbhijeet Kolekar
Patch replaces station management functions with ops declared. Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-04-22iwlwifi: adding MIMO3 support in rate scalingWey-Yi Guy
Separated the MIMO tpt matrix into MIMO2 and MIMO3, adding MIMO3 support in rate scaling algorithm. If the device support 3x3, then utilize all three antenna (A/B/C) for tx to improve throughput. Adding rs_switch_to_mimo3() function to allow switch to mimo3 modulation mode from other modes(legacy/siso/mimo2). Adding rs_move_mimo3_to_other() function to allow switch from mimo3 modulation mode to either siso or mimo2; also support toggle between SGI and NGI. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-03-16iwlwifi: verify the antenna selection when receive fixed rate debugfsWey-Yi Guy
When iwlwifi driver receive fixed rate debugfs command, validate the antenna selection, if the selection is invalid, report the valid antenna choice and do not set the rate scale table to fixed rate. Otherwise, set the entire rate scale table to the fixed rate request by the user. this validation can prevent sysassert happen in uCode Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-03-16iwlwifi: check IEEE80211_TX_STAT_AMPDU for agg pktWey-Yi Guy
when perform rate scaling, in tx status function, checking for IEEE80211_TX_STAT_AMPDU flag instead of IEEE_TX_CTL_AMPDU flag to perform AMPDU rate scaling operation. IEEE80211_TX_CTL_AMPDU was set by mac80211 for aggregation pkt. But when iwlwifi receive the tx status reply, it reset the flag to following info->flags = IEEE80211_TX_STAT_ACK; info->flags |= IEEE80211_TX_STAT_AMPDU; it causes the rate-scaling to not work for aggregation pkt if we checking for IEEE80211_TX_CTL_AMPDU flag. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-03-16iwlwifi: HT performance improvement changesWey-Yi Guy
During rate scaling, checking for 0 retry count before decrement the count by 1, this can avoid the retry count to become 255 (0xff), which will cause the rate to drop faster than what we expect during good condition (receive 0 retry packet). also change the algorithm to make the rate not drop faster than what we like. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-03-16iwlwifi: remove un-necessary rs_tl_turn_on_agg() after agg enabledWey-Yi Guy
After the MLME handshaking complete and tx aggregation started for the tid. Do not send unnecessary turn on aggregation request to mac80211. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-03-16iwlwifi: add rf information in rate_scale debugfs commandWey-Yi Guy
Adding more Radio information when displaying rate_scale_table. This can help to understand how many antenna and the current RF condition such as SISO, MIMO2, MIMO3. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-03-16iwlwifi: add valid tx antenna information in rate_scale_table debugfsWey-Yi Guy
when display rate_scale_table debugfs information, also display valid tx antenna information, this will help user to select correct antenna when issue fixed rate debugfs command Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Acked-by: Ben Cahill <ben.m.cahill@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-03-05iwlwifi: reduce stack sizeFrank Seidel
Reduce stack memory footprint of iwlwifi. (From >1000 bytes for each *_table_read on i386 down to 32) Signed-off-by: Frank Seidel <frank@f-seidel.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-02-09iwlwifi: don't use implicit priv in IWL_DEBUGTomas Winkler
Call IWL_DEBUG macro with explicit priv argument. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Acked-by: Samuel Ortiz <samuel.ortiz@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29iwlagn: fix agn rate scalingAbbas, Mohamed
Sometime Tx reply rate different than what rate scale expecting causing rate scale to bail out. This could cause failing to commit LQ cmd. This patch will try to solve this instead of just bail out. It also make sure we start with a valid rate. Signed-off-by: mohamed abbas <mohamed.abbas@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29iwlwifi: allow user to set max rateAbbas, Mohamed
allow user to set max rate through #iwconfig <inteface> rate XXX. mac80211 will try to force this if user set it, but driver is not in sync which cause mac80211 to report wrong current rate. This patch will check if max rate is set and force it in rate scaling Signed-off-by: mohamed abbas <mohamed.abbas@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29iwlwifi: update copyright year to 2009Reinette Chatre
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29iwlwifi: make use of conf_is_ht*() helpersLuis R. Rodriguez
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29iwlwifi: replace IWL_ERROR with IWL_ERRWinkler, Tomas
IWL_ERR doesn't use hidden priv pointer. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29iwlwifi: clean up printingTomas Winkler
Use IWL_ macros where possible to unify debug output usage. Define new unconditional printouts IWL_ERR, IWL_WARN, IWL_INFO, and IWL_CRIT which don't use hidden priv pointer. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29iwl3945: Remove DRV_NAME dependeniesSamuel Ortiz
As DRV_NAME is defined in 2 different header files, including both is not possible. This patch defines this constant from iwl3945-base.c and iwl-agn.c. It also redefines the IWL_ERROR and IWL_WARNING macros to use dev_printk, as the IWL_DEBUG_* macros do. Signed-off-by: Samuel Ortiz <samuel.ortiz@intel.com> Acked-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-23iwlwifi: fix rs_get_rate WARN_ON()Abbas, Mohamed
In ieee80211_sta structure there is u64 supp_rates[IEEE80211_NUM_BANDS] this is filled with all support rate from assoc_resp. If we associate with G-band AP only supp_rates of G-band will be set the other band supp_rates will be set to 0. If the user type this command this will cause mac80211 to set to new channel, mac80211 does not disassociate in setting new channel, so the active band is now A-band. then in handling the new essid mac80211 will kick in the assoc steps which involve sending disassociation frame. in this mac80211 will WARN_ON sta->supp_rates[A_BAND] == 0. This fixes: http://www.intellinuxwireless.org/bugzilla/show_bug.cgi?id=1822 http://www.kerneloops.org/searchweek.php?search=rs_get_rate Signed-off-by: mohamed abbas <mohamed.abbas@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-12-19iwlagn: fix agn rate scalingMohamed Abbas
Rate scaling in agn can be broken because of these two problems 1- the LQ command could not sent, we try to call LQ command before post association will be rejected, this will cause the driver to break in rs_tx_status reporting initial rate does not match. 2- In rs_rate_init we can get a value of 12, rate 60, for last_txrate_idx, this rate only valid in SISO/MIMO mode only Signed-off-by: Mohamed Abbas <mohamed.abbas@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-12-12iwlwifi: remove includes of iwl-helpers.h where not neededTomas Winkler
This patch removes includes of iwl-helpers.h where not needed Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-12-12iwlwifi: change email contact informationWinkler, Tomas
This patch replaces personal emails with hopefully always valid Intel Linux Wireless, which will be routed to a current maintainer Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-11-25iwlwifi : fix checkpatch.pl errorsAbhijeet Kolekar
Patch fixes checkpatch.pl errors for iwlwifi. Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-11-25iwlwifi: rs: remove fc variable and other cleanupsTomas Winkler
This patch 1. Removes use once use only fc variables, they are useless after refactoring ieee80211 frame control handlers 2. Other trivial cleanups Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-11-10iwlwifi: iwl-agn-rs: initialize rs with valid antennaWinkler, Tomas
This patch fix rate scaling initialization. Rate scaling was initialized always with B antenna. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-10-31iwlwifi: run through spell checkerTomas Winkler
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-10-31mac80211: remove rate_control_clearJohannes Berg
"Clearing" the rate control algorithm is pointless, none of the algorithms actually uses this operation and it's not even invoked properly for all channel switching. Also, there's no need to since rate control algorithms work per station. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-10-31mac80211/drivers: rewrite the rate control APIJohannes Berg
So after the previous changes we were still unhappy with how convoluted the API is and decided to make things simpler for everybody. This completely changes the rate control API, now taking into account 802.11n with MCS rates and more control, most drivers don't support that though. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-10-31mac80211: rewrite HT handlingJohannes Berg
The HT handling has the following deficiencies, which I've (partially) fixed: * it always uses the AP info even if there is no AP, hence has no chance of working as an AP * it pretends to be HW config, but really is per-BSS * channel sanity checking is left to the drivers * it generally lets the driver control too much HT enabling is still wrong with this patch if you have more than one virtual STA mode interface, but that never happens currently. Once WDS, IBSS or AP/VLAN gets HT capabilities, it will also be wrong, see the comment in ieee80211_enable_ht(). Additionally, this fixes a number of bugs: * mac80211: ieee80211_set_disassoc doesn't notify the driver any more since the refactoring * iwl-agn-rs: always uses the HT capabilities from the wrong stuff mac80211 gives it rather than the actual peer STA * ath9k: a number of bugs resulting from the broken HT API I'm not entirely happy with putting the HT capabilities into struct ieee80211_sta as restricted to our own HT TX capabilities, but I see no cleaner solution for now. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-10-31802.11: clean up/fix HT supportJohannes Berg
This patch cleans up a number of things: * the unusable definition of the HT capabilities/HT information information elements * variable names that are hard to understand * mac80211: move ieee80211_handle_ht to ht.c and remove the unused enable_ht parameter * mac80211: fix bug with MCS rate 32 in ieee80211_handle_ht * mac80211: fix bug with casting the result of ieee80211_bss_get_ie to an information element _contents_ rather than the whole element, add size checking (another out-of-bounds access bug fixed!) * mac80211: remove some unused return values in favour of BUG_ON checking * a few minor other things Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-10-27net: convert print_mac to %pMJohannes Berg
This converts pretty much everything to print_mac. There were a few things that had conflicts which I have just dropped for now, no harm done. I've built an allyesconfig with this and looked at the files that weren't built very carefully, but it's a huge patch. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-14iwlwifi: fix compilation warning when CONFIG_IWLWIFI_DEBUG is not set.Rami Rosen
When CONFIG_IWLWIFI_DEBUG is not set and CONFIG_IWLWIFI is set, we get this compilation warning: /wireless-next-2.6/drivers/net/wireless/iwlwifi/iwl-agn-rs.c: In function 'rs_free_sta': /wireless-next-2.6/drivers/net/wireless/iwlwifi/iwl-agn-rs.c:2425: warning: unused variable 'priv' This patch fixes it by adding __maybe_unused attribute. Signed-off-by: Rami Rosen <ramirose@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-09-24mac80211: clean up rate control APIJohannes Berg
Long awaited, hard work. This patch totally cleans up the rate control API to remove the requirement to include internal headers outside of net/mac80211/. There's one internal use in the PID algorithm left for mesh networking, we'll have to figure out a way to clean that one up and decide how to do the peer link evaluation, possibly independent of the rate control algorithm or via new API. Additionally, ath9k is left using the cross-inclusion hack for now, we will add new API where necessary to make this work properly, but right now I'm not expert enough to do it. It's still off better than before. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-09-15iwlwifi: don't access mac80211's AMPDU state machineJohannes Berg
There really is no need, at worst ieee80211_start_tx_ba_session will log a message when debugging is enabled, and poking such internals of mac80211 definitely doesn't belong into an RC algorithm. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-09-15mac80211: share sta_info->ht_infoJohannes Berg
Rate control algorithms may need access to a station's HT capabilities, so share the ht_info struct in the public station API. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-09-15mac80211: move txrate_idx into RC algorithmsJohannes Berg
The sta_info->txrate_idx member isn't used by all RC algorithms in the way it was intended to be used, move it into those that require it (only PID) and keep track in the core code of which rate was last used for reporting to userspace and the mesh MLME. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-09-15mac80211: share sta->supp_ratesJohannes Berg
As more preparation for a saner rate control algorithm API, share the supported rates bitmap in the public API. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-09-15mac80211: move last_txrate_idx into RC algorithmsJohannes Berg
This variable in sta_info is only used in a meaningful way by the Intel RC algorithms, so move it into those. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-09-15mac80211: share STA information with driverJohannes Berg
This patch changes mac80211 to share some more data about stations with drivers. Should help iwlwifi and ath9k when they get around to updating, and might also help with implementing rate control algorithms without internals. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Sujith Manoharan <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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