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path: root/drivers/net/wireless/mwifiex/init.c
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2014-09-15mwifiex: bring in scan channel gap featureAvinash Patil
With scan channel gap when any station/AP is active, FW comes back to connected channel for any pending data transfter after scanning each channel. We set scan channel gap TLV to FW in scan command when any of the interface is active. This enables scan channel gap in FW. Also when scan channel gap is enabled, we would scan maximum channels allowed by FW. Scan channel gap is supported only on FW with V15 FW API. Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Marc Yang <yangyang@marvell.com> Signed-off-by: Cathy Luo <cluo@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-08-28mwifiex: rename macro and variables related to API revisionAmitkumar Karwar
We will remove 'fw' prefix from these variable and macro names and make them generic. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Cathy Luo <cluo@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-06-25mwifiex: update Copyright to 2014Xinming Hu
This patch updates mwifiex Copyright to 2014. Signed-off-by: Xinming Hu <huxm@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-06-25mwifiex: add firmware dump feature for PCIeAmitkumar Karwar
Firmware dump feature is added for PCIe based chipsets which can be used with the help of ethtool commands. 1) Trigger firmware dump operation: ethtool --set-dump mlan0 0xff When the operation is completed, udev event will be sent to trigger external application. 2) Following udev rule can be used to get the data from ethtool: DRIVER=="mwifiex_pcie", ACTION=="change", RUN+="/sbin/mwifiex_pcie_fw_dump.sh" mwifiex_pcie_fw_dump.sh: #!/bin/bash ethtool --set-dump mlan0 0 ethtool --get-dump mlan0 ethtool --get-dump mlan0 data /tmp/ITCM.log ethtool --set-dump mlan0 1 ethtool --get-dump mlan0 ethtool --get-dump mlan0 data /tmp/DTCM.log ethtool --set-dump mlan0 2 ethtool --get-dump mlan0 ethtool --get-dump mlan0 data /tmp/SQRAM.log ethtool --set-dump mlan0 3 ethtool --get-dump mlan0 ethtool --get-dump mlan0 data /tmp/IRAM.log Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-02-28mwifiex: change transmit buffer size for 8897Amitkumar Karwar
Currently default Tx buffer size configured to firmware is 2K for all chipsets. This patch changes it to 4K for SD/PCIe/USB 8897 chipsets as per firmware requirements. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-02-24mwifiex: use del_timer_sync instead of del_timerAvinash Patil
Use SMP safe del_timer_sync instead of del_timer for cancelling timers. Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-02-12mwifiex: parse API version from FWAvinash Patil
This patch adds support to parse FW API version TLVs. Currently only API version for key_material is supported. Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-02-12mwifiex: provision for holding and restoring packets during TDLS setupAvinash Patil
While TDLS link is being setup, few packets from this station to peer station may be buffered at AP. It may happen that once TDLS link is setup, packets sent from station to peer on direct link get delivered before traffic from AP arrives at peer station. This results into packet reordering issue at peer station. To avoid this, we hold data packets destined to TDLS peer during TDLS setup. These packets are moved to temperory TDLS TX queue. Upon successful TDLS setup, they are moved to RA list created for this peer. Upon failure, packets are moved back to AP's RA list for that particular TID. Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-02-12mwifiex: make tos_to_tid_inv part of mwifiex_private structureAvinash Patil
tos_to_tid_inv values are needed even during TDLS restore operations. Currently tos_to_tid_inv is part of wmm.c and is declared static. Make it part of private structure so that it can be used in other files as well. Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-02-12mwifiex: implement extended scan featureAmitkumar Karwar
In extended scan, host gets scan results through one or multiple events instead of scan command response. Host will send next scan command when all the events are received. Legacy scan sometimes truncates scan results in a noisy environment due to buffer length limitation. This issue is addressed in extended scan. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-12-09mwifiex: fix rx_pending count imbalanceUjjal Roy
RX packets are handled in different paths. Not all paths have decrement of rx_pending counter. This patch fixes the counter imbalance. Signed-off-by: Ujjal Roy <royujjal@gmail.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-08-26mwifiex: drop gratuitous ARP framesAvinash Patil
This patch adds support for dropping gratuitous ARP frames which is requirement for WFA Hotspot2.0. Hotspot2.0 capability is enabled in driver if extended capabilities IE from BSS descriptor has 11u interworking enabled. Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-07-25Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
2013-07-24mwifiex: reduce firmware poll retriesAmitkumar Karwar
After downloading the firmware, firmware status is checked by reading a register. Polling interval is 100 msecs. Therefore 100 retries means the status is checked for 10 secs which is more than sufficient for firmware to get ready. This patch removes 1000 retries macro usage, because 100secs time is not practical. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-07-24mwifiex: move if_ops.cleanup_if() callAmitkumar Karwar
As if_ops.init_if() is called in mwifiex_register(), corresponding cleanup routine should be called in mwifiex_unregister(). Currently it's there in mwifiex_adapter_cleanup(), hence interface specific cleanup is not performed if driver initialization is failed. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-07-24mwifiex: remove unnecessary del_timer(cmd_timer)Amitkumar Karwar
It is already there in mwifiex_unregister(). So unnecessary call in mwifiex_adapter_cleanup() is removed in this patch. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-07-24mwifiex: move del_timer_sync(scan_delay_timer) call to fix memleakAmitkumar Karwar
Currently it is in mwifiex_adapter_cleanup() which doesn't get called if driver initialization is failed causing memory leak. scan_delay_timer is initialized in mwifiex_register(), so it should be deleted in mwifiex_unregister(). Hence it has been moved to appropriate place. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-07-24mwifiex: delete AP TX queues when bridged packets reach thresholdAvinash Patil
Delete packets from TX queues for this mwifiex_private structure when bridged packet count reaches maximum threshold. Bridged packets from each RA List are deleted till they fall to low threshold of 128. Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-07-22mwifiex: fix IRQ enable/disableDaniel Drake
During tear down (e.g. mwifiex_sdio_remove during system suspend), mwifiex left IRQs enabled for a significant period of time when it was unable to handle them correctly. This caused interrupt storms and interfered with the bluetooth interface on the same SDIO card. Solve this by disabling interrupts at the point when they can no longer be handled correctly, which is at the start of mwifiex_remove_card(). For cleanliness, we now enable interrupts in the mwifiex_add_card() path, to be symmetrical with the disabling of interrupts. We also couple the registration of the sdio IRQ handler with the actual enable/disable of interrupts at the hardware level. I also removed a write to this register in mwifiex_init_sdio which seemed pointless and won't cause any ill effects now that we only register the SDIO IRQ handler when we are ready to accept interrupts. Includes some corrections from Amitkumar Karwar. Signed-off-by: Daniel Drake <dsd@laptop.org> Acked-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-06-19mwifiex: channel switch handling for stationAmitkumar Karwar
After receiving channel switch announcement from AP, scan and association on that channel is blocked for DFS_CHAN_MOVE_TIME (10 seconds). Hence station will be able to connect to the AP, once it is moved to new channel. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: Paul Stewart <pstew@chromium.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-06-12mwifiex: fix regression issue for usb interfaceAmitkumar Karwar
PATCH "mwifiex: scan delay timer cleanup in unload path" adds code to cancel scan delay timer in unload path. It causes a regression for USB interface. USB8797 card gets enumerated twice. First enumeration is for firmware download and second enumeration expects firmware initialization. It was observed that we are trying del_timer_sync() without setting up the timer when remove handler is called after first enumeration. This patch moves setup_timer() call to appropriate place so that timer is setup for both the enumerations. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-05-22mwifiex: replace spin_lock_irqsave with spin_lock and fix warn_onAvinash Patil
We see this WARN_ON during PCIe unload: WARNING: at kernel/smp.c:382 smp_call_function_many+0x66/0x1e1() This happens because we are doing PCI iounmap operations while holding spinlock via spin_lock_irqsave(). Holding spinlock this way causes disabling IRQs and hence PCI iounmap shows warning on irqs_disabled() check. Use non-irq variant of spin_lock i.e. spin_lock() instead. Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-05-22mwifiex: remove global user_scan_cfg variableAmitkumar Karwar
As the variable is used only for preparation of internal scan commands, we don't need to keep it allocated until the entire scan completes. We will define it as a local variable and free immediately after it's use. New flag 'scan_aborting' is added to handle race between mwifiex_close() and scan handler. Previously user_scan_cfg pointer used to take care of this. This patch fixes a memory leak in mwifiex_cfg80211_scan after running "iwlist mlan0 scan & sleep 1; rmmod mwifiex_sdio". Reported-by: Daniel Drake <dsd@laptop.org> Tested-by: Daniel Drake <dsd@laptop.org> Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-05-22mwifiex: scan delay timer cleanup in unload pathAmitkumar Karwar
Return from scan delay timer routine if surprise_removed flag is true. Also, cancel the timer in unload path. This fixes a crash when scan delay timer accesses structures that have been freed already. Tested with "iwlist mlan0 scan & sleep 1; rmmod mwifiex_sdio" Reported-by: Daniel Drake <dsd@laptop.org> Tested-by: Daniel Drake <dsd@laptop.org> Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-05-22mwifiex: rename mwifiex_free_adapter() routine in init.cAmitkumar Karwar
We have two different static routines with name mwifiex_free_adapter(). The routine in main.c actually frees the adapter structure. We will rename other routine in init.c to mwifiex_adapter_cleanup() to avoid confusion. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-04-23mwifiex: rework round robin scheduling of bss nodes.Andreas Fenkart
Rotate bss prio list, so the bss next to the one served, will come first in the list of bss' with equal priority. This way we pick bss nodes in a round robin fashion. Using list rotation instead of a cur ptr simplifies iteration to calling list_for_each_entry. List rotation is done via list_move, where the head itself is temporarily removed and then re-inserted after the bss just served. Signed-off-by: Andreas Fenkart <andreas.fenkart@streamunlimited.com> Acked-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-04-08mwifiex: remove unused tid_tbl_lock from mwifiex_tid_tblAndreas Fenkart
ra_list_spinlock is used to protect struct mwifiex_wmm_desc and embedded structures such as ra_list. tid_tbl_lock while more fine grained, is not used but in one function. That function is not called reentrantly. To protect ra_list from concurrent modification ra_list_spinlock must be held. Signed-off-by: Andreas Fenkart <andreas.fenkart@streamunlimited.com> Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-04-08mwifiex: fix negative cmd_pending countBing Zhao
cmd_pending is increased in mwifiex_wait_queue_complete() and decreased in mwifiex_complete_cmd() currently. If there are two or more commands in the cmd_pending_q the main worker thread will pick up next command from cmd_pending_q automatically after finishing current command. As a result mwifiex_wait_queue_complete() will not be called because the command is alreay completed. This leads to a negative number in cmd_pending count. Fix it by increasing cmd_pending when a cmd is queued into cmd_pending_q and decreasing when that cmd is recycled. For scan commands we don't perform inc/dec operations until it's moved from scan_pending_q to cmd_pending_q. This covers both synchronous and asynchronous commands. Reported-by: Daniel Drake <dsd@laptop.org> Tested-by: Daniel Drake <dsd@laptop.org> Tested-by: Marco Cesarano <marco@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-03-29Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless Conflicts: net/mac80211/sta_info.c net/wireless/core.h
2013-03-18mwifiex: cancel cmd timer and free curr_cmd in shutdown processBing Zhao
curr_cmd points to the command that is in processing or waiting for its command response from firmware. If the function shutdown happens to occur at this time we should cancel the cmd timer and put the command back to free queue. Cc: <stable@vger.kernel.org> # 3.8 Tested-by: Marco Cesarano <marco@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-03-06mwifiex: shorten the host sleep configuration macro namesAmitkumar Karwar
As we are adding a few more macros in this category in next patch, this cleanup work is required. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-02-08Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
2013-02-04wireless: Remove unnecessary alloc/OOM messages, alloc cleanupsJoe Perches
alloc failures already get standardized OOM messages and a dump_stack. Convert kzalloc's with multiplies to kcalloc. Convert kmalloc's with multiplies to kmalloc_array. Remove now unused variables. Remove unnecessary memset after kzalloc->kcalloc. Whitespace cleanups for these changes. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-01mwifiex: remove max_tx_buf_sizeBing Zhao
max_tx_buf_size is not used any more after reconfiguration of tx buffer size has been removed. Also add missing curr_tx_buf_size update while dumping debug info via debugfs. Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-07mwifiex: add init_fw_port handler for PCIe interfaceAvinash Patil
This patch adds support for init_fw_port handler for PCIe interface, which resets RXBD read pointer for PCIe. This fixes issue where RX doesn't work until some TX from driver happens. Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-11-14mwifiex: add multi-queue supportAvinash Patil
This patch adds support for multiple TX queues inside mwifiex driver. Four different queues according to WMM access categories are defined for each virtual interface. When a packet is received from netdev for transmission, tx pending count for particular queue is incremented and if tx pending count has reached upper water-mark, this queue is stopped instead of stopping all queues. Similarly when a packet is successfully transmitted from device, tx pending count is decremented per queue and if pending count falls below lower water-mark, queue operations are again resumed. This ensures that not all tranmission is blocked if traffic with particular TOS value suddenly increases. Also wake all queues after association/IBSS_join/uAP_BSS_start to enable traffic on all queues. Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-10-29mwifiex: minor cleanup and a fix in scan semaphore usageAmitkumar Karwar
mwifiex_request_scan() takes care of synchronous internal scan performed by driver during association. Currently the semaphore acquired for the scan is unnecessarily released at the end of different paths. Also, failure paths returning error code other than "-1" are not considered. We will release it at the end of routine to fix above issues. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-10-29mwifiex: abort scan upon interface downAmitkumar Karwar
When the interface is down, we will abort scan by calling cfg80211_scan_done() with abort option. This fixes WARN_ON triggered by cfg80211 in wdev_cleanup_work(). Driver's internal variables/flags are cleared once we get response for current scan command. Meanwhile we will block new scan request from cfg80211. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28mwifiex: add support for P2P GO in interface type changeStone Piao
When cfg80211 calls to change interface type for P2P GO, send P2P mode config commands to firmware and set bss role and bss mode accordingly. Signed-off-by: Stone Piao <piaoyun@marvell.com> Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28mwifiex: implement remain_on_channel and cancel_remain_on_channelStone Piao
Add a new command to implement remain_on_channel and cancel_remain_on_channel. Signed-off-by: Stone Piao <piaoyun@marvell.com> Signed-off-by: Kiran Divekar <dkiran@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28mwifiex: report received management frames to cfg80211Stone Piao
Process the management frames received from firmware and report them to cfg80211. Signed-off-by: Stone Piao <piaoyun@marvell.com> Signed-off-by: Kiran Divekar <dkiran@marvell.com> Signed-off-by: Kevin Gan <ganhy@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-24mwifiex: fix issue in resumed scan operationAmitkumar Karwar
When delayed scan operation is resumed, we just add next scan command in queue but don't wakeup main thread to process the command. Hence the command is downloaded to firmware only after waking up the main thread by any other means. This bug which was introduced after "mwifiex: improve scan delay logic.." patch is fixed here. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-07mwifiex: don't disable wait_q_enabled flagAmitkumar Karwar
We should not disable "cmd_node->wait_q_enabled" flag here before calling mwifiex_insert_cmd_to_free_q() because we want to wake up the thread waiting for command completion inside this function. The wait_q_enabled flag will be disabled internally upon command completion. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Kiran Divekar <dkiran@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-07mwifiex: release semaphore acquired for internal scan operationAmitkumar Karwar
If "iw connect" command is fired for station interface, when heavy traffic is running on AP interface, internal scan operation performed before actual association is aborted. In this case we missed to release semaphore. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Kiran Divekar <dkiran@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-06mwifiex: create list for associated stations in AP modeAvinash Patil
After station is associated an entry would be added to station list. This entry would have station specific information such as 11n support, AMSDU size. The entry would be deleted after deauthentication. All station entries would be deleted during BSS_IDLE event. Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Kiran Divekar <dkiran@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-06mwifiex: update 11n status as per start_ap IEAvinash Patil
If HT IE is present in beacon_data of start_ap cfg80211 handler, enable 11n flag in AP. Disable 11n flag when stop_ap handler is called. Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Kiran Divekar <dkiran@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-06mwifiex: improve scan delay logic during Tx trafficAmitkumar Karwar
Earlier scan command was postponed by 20msec multiple times to give preference to Tx traffic until we find empty wmm queue. There is a corner case in which wmm queue becomes empty immediately after processing the packet(before 20msec) and there may be next packet coming after some time. In this case we should not resume scan operation. We will use new flag to check Tx traffic and resume scan operation only if there is no traffic for 200msec. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-07-17mwifiex: add support to use basic rates in ibss join requestAmitkumar Karwar
In mwifiex_set_rf_channel() ibss specific flags were unnecessarily getting modified for infra and AP mode. This patch removes mwifiex_set_rf_channel() function and adds equivalant code in infra, ibss and AP path. For ibss, now we are chosing band based on channel type and basic rates provided in ibss join request. We can start ibss network in A only, B only, G only, BG, BGN, AN mode. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-22mwifiex: wake up main thread to handle Tx traffic if scan is delayed/abortedAmitkumar Karwar
This is a flaw in recently implemented logic to handle Tx traffic and scan operation simultaneously. We missed to wakeup main thread to handle Tx traffic if scan is delayed/aborted. For some cards (SD8797, for example), firmware will send SLEEP event if there is no activity for 50msec. While handling the SLEEP event, main thread will be woken up and Tx packet gets sent hence. In worst case Tx traffic will be delayed for 50msec. For other cards, such as USB8797, firmware won't send SLEEP event. So, Tx traffic gets stuck if no other event triggers the wakeup of main thread. This patch fixes above issues. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-11mwifiex: fix simultaneous scan and Tx traffic problemAmitkumar Karwar
If scan operation is started when Tx traffic is already running, driver locks Tx queue until it gets completed. With this logic there is a delay for Tx packets. This patch implements new approach to give Tx path higher priority in this case. Driver internally sends multiple synchronous scan commands to firmware when scan is requested by user. Now we will make sure that Tx queue is empty everytime before sending next scan command. If Tx queue isn't empty scan command will be postponsed by 20msec. This rule will be followed until Tx queue becomes empty or timeout of 1 second happens. In case of timeout scan operation will be aborted. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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