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path: root/drivers/net/wireless/ath/ath9k/rc.c
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* ath9k: Nuke struct ath_tx_ratectrl_stateVasanthakumar Thiagarajan2009-07-241-25/+25
| | | | | | | Move its only member (u8 per) to struct ath_rate_priv. Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Use probe interval instead of rssi reduce intervalVasanthakumar Thiagarajan2009-07-241-5/+1
| | | | | | | Get rid of rssi reduce interval. Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Remove unused members from rate control structureVasanthakumar Thiagarajan2009-07-241-108/+108
| | | | | Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Remove dead code in rate controlVasanthakumar Thiagarajan2009-07-241-159/+4
| | | | | | | | | ath9k rate control is based on only PER (packet error rate), remove unused code which was intented to do rssi based rate selection. Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: remove rate control wraperLuis R. Rodriguez2009-07-241-16/+7
| | | | | | | | | | After the cleanup we just use get_rate as a wrapper, skip the wrapper. Cc: Derek Smithies <derek@indranet.co.nz> Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: add helper for management / no-ack frame rate decisionLuis R. Rodriguez2009-07-241-13/+1
| | | | | | | | | | | | | | | | | | | | | All current rate control algorithms agree to send management and no-ack frames at the lowest rate. They also agree to do this when sta and the private rate control data is NULL. We add a hlper to mac80211 for this and simplify the rate control algorithm code. Developers wishing to make enhancements to rate control algorithms are for broadcast/multicast can opt to not use this in their gate_rate() mac80211 callback. Cc: Zhu Yi <yi.zhu@intel.com> Acked-by: Reinette Chatre <reinette.chatre@intel.com> Cc: ipw3945-devel@lists.sourceforge.net Cc: Gabor Juhos <juhosg@openwrt.org> Acked-by: Felix Fietkau <nbd@openwrt.org> Cc: Derek Smithies <derek@indranet.co.nz> Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: remove unnecessary IEEE80211_TX_CTL_NO_ACK checksLuis R. Rodriguez2009-07-241-4/+2
| | | | | | | | | | We check for this condition early on in our mac80211 get_rate() callback ath_get_rate(), so remove this check later down the path. Cc: Derek Smithies <derek@indranet.co.nz> Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: rename ath_rc_ratefind_ht() to ath_rc_get_highest_rix()Luis R. Rodriguez2009-07-241-5/+6
| | | | | | | | | The purpose is to find the highest rate we can use. Cc: Derek Smithies <derek@indranet.co.nz> Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: remove ATH9K_MODE_11BLuis R. Rodriguez2009-07-241-23/+0
| | | | | | | | | | | | | | This saves us 2733 bytes. text data bss dec hex filename 252265 3628 1584 257477 3edc5 ath9k-has-b-rate.ko 249905 3628 1584 255117 3e48d ath9k.ko Cc: Derek Smithies <derek@indranet.co.nz> Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com> Siged-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: remove unused ath_rc_isvalid_txmask()Luis R. Rodriguez2009-07-241-7/+0
| | | | | | | Cc: Derek Smithies <derek@indranet.co.nz> Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: rename ath_rc_get_nextlowervalid_txrate()Luis R. Rodriguez2009-07-241-9/+7
| | | | | | | | | | What this does is get us our next lower rate so call it that, ath_rc_get_lower_rix(). Cc: Derek Smithies <derek@indranet.co.nz> Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: remove pointless wrapper ath_rc_rate_getidx()Luis R. Rodriguez2009-07-241-17/+4
| | | | | | | | | | | This is just calling another helper, so just use the other helper directly. This should make it clear that when do not find the next rate we stick to the current one. Cc: Derek Smithies <derek@indranet.co.nz> Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: remove unused stepdown when looking for the next rateLuis R. Rodriguez2009-07-241-13/+8
| | | | | | | | | This is not used, remove this. Cc: Derek Smithies <derek@indranet.co.nz> Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: remove unused min rate calculation codeLuis R. Rodriguez2009-07-241-24/+9
| | | | | | | | | | This is not used, and when we need to get the lowest rate we should simply use mac80211's own rate_lowest_index(sband, sta). Cc: Derek Smithies <derek@indranet.co.nz> Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: cleanup try count for MRR in rate controlLuis R. Rodriguez2009-07-241-9/+20
| | | | | | | | | | | | | | | | | | | This has no functional change and just cleans up the code to be more legible and removes a useless variable for Multi Rate Retry. For regular frames we use 2 retries for MRR segments [0-2]. For the last MRR segment [3] we use 4. MRR[0] = 2 MRR[1] = 2 MRR[2] = 2 MRR[3] = 4 Cc: Derek Smithies <derek@indranet.co.nz> Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: downgrade assert in rc.c for invalid rateLuis R. Rodriguez2009-07-241-4/+12
| | | | | | | | The case where no vaid rate is found should not happen now but to help debugging and downgrade this to a warn. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: make private driver rate tables constLuis R. Rodriguez2009-05-061-29/+32
| | | | | | | | | | | | | | | | | | | | | | | On x86 this allows us to do the following small savings: shave off 23 % off of the module's data, and shave off 6 % off of the module's text. We save 456 bytes, for those counting. $ size ath9k.ko text data bss dec hex filename 250794 3628 1600 256022 3e816 ath9k.ko $ size ath9k-old.ko text data bss dec hex filename 239114 15308 1600 256022 3e816 ath9k-old.ko $ du -b ath9k.ko 4034244 ath9k.ko $ du -b ath9k-old.ko 4033788 ath9k-old.ko Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fix handling of retry count of NO_ACK framesGábor Stefanik2009-05-061-4/+5
| | | | | | | | Check for IEEE80211_TX_CTL_NO_ACK instead of is_multicast_ether_addr when determining whether to use lowest rate without retries. Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* wireless: remove some (bogus?) 'may be used uninitialized' warningsJohn W. Linville2009-04-241-1/+1
| | | | | | | | | | | | | | net/mac80211/tx.c: In function ‘ieee80211_tx_h_select_key’: net/mac80211/tx.c:448: warning: ‘key’ may be used uninitialized in this function drivers/net/wireless/ath/ath9k/rc.c: In function ‘ath_rc_rate_getidx’: drivers/net/wireless/ath/ath9k/rc.c:815: warning: ‘nextindex’ may be used uninitialized in this function drivers/net/wireless/hostap/hostap_plx.c: In function ‘prism2_plx_probe’: drivers/net/wireless/hostap/hostap_plx.c:438: warning: ‘cor_index’ may be used uninitialized in this function drivers/net/wireless/hostap/hostap_plx.c:438: warning: ‘cor_offset’ may be used uninitialized in this function Signed-off-by: John W. Linville <linville@tuxdriver.com>
* atheros: put atheros wireless drivers into ath/Luis R. Rodriguez2009-04-221-0/+1752
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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