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path: root/drivers/net/wireless/ath9k
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* ath9k: Do not remove header padding on RX from short framesJouni Malinen2008-12-121-2/+10
| | | | | | | | | | | | The 802.11 header is only padded to 32-bit boundary when the frame has a non-zero length payload. In other words, control frames (e.g., ACK) do not have a padding and we should not try to remove it. This fixes monitor mode for short control frames. In addition, the hdrlen&3 use is described in more detail to make it easier to understand how the padding length is calculated. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Refactor struct ath_softcSujith2008-12-125-267/+254
| | | | | | | | Split ath_softc into smaller structures for rx, tx and beacon handling. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: BH shouldn't be enabled when hardirqs are disabled.Senthil Balasubramanian2008-12-121-2/+3
| | | | | | | | | | | | | | | ath_tx_complete_buf uses a BH version of spinlock and so releasing the lock enables BH which is incorrect when called from sta_notify callback as MAC80211 disables hardirqs before the driver callback is called. As ath_tx_complete_buf is shared between user and softirq context using normal spinlock may not be appropriate. Though the proper fix would be to cleanup the context properly in the driver code, this would be an interim fix to avoid kernel warning. Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: remove fragmentation workaround againJohannes Berg2008-12-121-6/+0
| | | | | | | Looking at the RC algorithm this is no longer necessary. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: avoid rx frames with corrupted descriptor.Senthil Balasubramanian2008-12-122-2/+9
| | | | | | | | | Setting RX_ABORT/RX_DIS after MAC reset and clearing RX_ABORT/RX_DIS after enbling RXE/RXDP to avoid rx frames with corrupted descriptor status. Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Incorrect band enum causes invalid antenna configuration.Senthil Balasubramanian2008-12-123-3/+8
| | | | | | | | | It's a regression from the patch titled "ath9k: Use mac80211's band macros and remove enum hal_freq_band". MAC80211 band macros can't be mapped directly with our hal band enum. Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Adding support for Atheros AR9285 chipset.Senthil Balasubramanian2008-12-128-332/+1826
| | | | | Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Adding initvalues for Atheros AR9285 chipset.Senthil Balasubramanian2008-12-121-0/+1363
| | | | | | | This patch adds the initvalues required for AR9285 chipset. Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Adding AR9285 chipset register information.Senthil Balasubramanian2008-12-121-1/+108
| | | | | | | Adding AR9285 register information. Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Merge structures ath_atx, ath_node_aggr with ath_nodeSujith2008-12-122-94/+72
| | | | | Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Remove remaining occurrences of CONFIG_SLOW_ANT_DIVSujith2008-12-123-22/+2
| | | | | | | | Slow Antenna Diversity has been removed, these are remnants of the old code. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Add a debugfs file to show interrupt statisticsSujith2008-12-123-0/+159
| | | | | | | Location: ath9k/<phy>/interrupt Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Maintain rate table choice after associationSujith2008-12-126-13/+12
| | | | | | | | | | A scan run after association would change sc_curmode which is used to get the current rate table. This patch fixes it by removing sc_curmode and setting the rate table in usage in cur_rate_table on association. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fix bug in rate table managementSujith2008-12-122-4/+6
| | | | | | | | | | The proper rate table wouldn't be used if a disassoc happens and a new attempt is made to associate using wpa_supplicant. This patch fixes it by storing the rate table to be used on association. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Disable staggered Beacon frame schedulingJouni Malinen2008-12-121-1/+1
| | | | | | | | | | | | | | | | | | | It looks like there are some issues in the current ath9k version as far as staggered Beacon frame scheduling is concerned. This results in Beacon frame timestamp being off by 25 milliseconds or so which can cause issues with multicast power save buffering in AP mode. Some client stations fail to receive multicast frames when there is this large an offset between TBTT and actual Beacon transmission time. Since ath9k does not yet support multiple BSSes anyway, the staggered Beacon frame scheduling is just increasing the number of interrupts at this point. The easiest fix for the timestamp offset is to disable staggered Beacon frames for now. We need to redesign beacon.c anyway when adding multi-BSS support with mac80211 since the existing code depends on different mechanism for Beacon frame transmission. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Free Beacon skbs in AP modeJouni Malinen2008-12-121-0/+1
| | | | | | | | | Fix a memory leak where AP mode did not free transmitted Beacon frame skbs. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Acked-by: Pat Erley <pat-lkml@erley.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Use GFP_ATOMIC when allocating TX private areaLuis R. Rodriguez2008-12-051-2/+20
| | | | | | | | | | | | | Using GFP_KERNEL was wrong and produces a 'scheduling while atomic' bug as we're in a tasklet. Also, check for proper return values now, in case allocation fails and be sure to stop the TX queue in case of memory issues but gaurantee the TX queue will eventually be woken up. Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com> Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Check for pci_map_single() errorsLuis R. Rodriguez2008-12-053-3/+53
| | | | | | | | pci_map_single() can fail so detect those errors with pci_dma_mapping_error() and deal with them accordingly. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* generic swap(): ath9k: rename swap() to swap_array()Wu Fengguang2008-12-052-2/+2
| | | | | | | | | | | | | In preparation for the introduction of a generic swap() macro. Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Cc: Sujith Manoharan <Sujith.Manoharan@atheros.com> Cc: Luis R. Rodriguez <lrodriguez@atheros.com> Cc: Vasanthakumar Thiagarajan <vasanth@atheros.com> Cc: Senthil Balasubramanian <senthilkumar@atheros.com> Cc: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Choose correct ANI calibration periodSujith2008-12-051-2/+3
| | | | | | | | | ANI can't be turned on/off dynamically yet, but the calculation of the calibration period is wrong anyway. This patch fixes it. Reported-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Replace ath9k_opmode with nl80211_iftypeColin McCabe2008-12-0510-74/+81
| | | | | | | | This patch kills ath9k's ath9k_opmode enum by replacing it with nl80211_iftype. Signed-off-by: Colin McCabe <colin@cozybit.com> Signed-off-by: Andrey Yurovsky <andrey@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Add a debugfs file for dumping DMA statusSujith2008-12-056-74/+102
| | | | | | | | Debugfs file location: ath9k/<wiphy>/dma Contains values in DMA debug registers. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Add initial layout for an ath9k specific debugfs mechanismSujith2008-12-053-8/+42
| | | | | Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Remove includes that are not neededSujith2008-12-051-19/+0
| | | | | Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Add ATH9K_DEBUG configuration optionSujith2008-12-055-17/+75
| | | | | | | | | Make debugging configurable, and add a module parameter to give the debug mask. Add debug.c to hold all debug specific code. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Use cleaner debug masksSujith2008-12-0513-609/+429
| | | | | | | | Remove all the useless __func__ prefixes in debug messages, and replace the DPRINTF macro with a function. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Handle channel initialization for AP modeSujith2008-12-052-24/+91
| | | | | | | | Hostapd now passes the HT parameters through the config() callback, use these to set the appropriate channel in AP mode. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* Merge branch 'master' of ↵David S. Miller2008-11-262-12/+22
|\ | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/hp-plus.c drivers/net/wireless/ath5k/base.c drivers/net/wireless/ath9k/recv.c net/wireless/reg.c
| * ath9k: correct expected max RX buffer sizeLuis R. Rodriguez2008-11-251-2/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | We should only tell the hardware its capable of DMA'ing to us only what we asked dev_alloc_skb(). Prior to this it is possible a large RX'd frame could have corrupted DMA data but for us but we were saved only because we were previously also pci_map_single()'ing the same large value. The issue prior to this though was we were unmapping a smaller amount which the prior DMA patch fixed. Signed-off-by: Bennyam Malavazi <Bennyam.Malavazi@atheros.com> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * ath9k: Fix SW-IOMMU bounce buffer starvationLuis R. Rodriguez2008-11-252-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This should fix the SW-IOMMU bounce buffer starvation seen ok kernel.org bugzilla 11811: http://bugzilla.kernel.org/show_bug.cgi?id=11811 Users on MacBook Pro 3.1/MacBook v2 would see something like: DMA: Out of SW-IOMMU space for 4224 bytes at device 0000:0b:00.0 Unfortunately its only easy to trigger on MacBook Pro 3.1/MacBook v2 so far so its difficult to debug (even with swiotlb=force). We were pci_unmap_single()'ing less bytes than what we called for with pci_map_single() and as such we were starving the swiotlb from its 64MB amount of bounce buffers. We remain consistent and now always use sc->rxbufsize for RX. While at it we update the beacon DMA maps as well to only use the data portion of the skb, previous to this we were pci_map_single()'ing more data for beaconing than what we tell the hardware it can use, therefore pushing more iotlb abuse. Still not sure why this is so easily triggerable on MacBook Pro 3.1, it may be the hardware configuration tends to use more memory > 3GB mark for DMA. Signed-off-by: Maciej Zenczykowski <zenczykowski@gmail.com> Signed-off-by: Bennyam Malavazi <Bennyam.Malavazi@atheros.com> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: Use proper TX channel width for setting channelsSujith2008-11-264-69/+60
| | | | | | | | | | | | | | | | | | The TX channel width of the BSS can be obtained only after association. In all cases, default to HT20 if HT is enabled, and set chan width to HT40 only if the BSS supports it. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: Code scrubSujith2008-11-268-1865/+1231
| | | | | | | | | | | | | | | | | | | | Merge core.c and base.c Remove Antenna Diversity (unused now). Remove unused chainmask handling code. Comment, indentation scrub. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: Handle -ENOMEM on RX gracefullyLuis R. Rodriguez2008-11-261-31/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We would get an oops on RX on -ENOMEM by passing NULL to the hardware on ath_rx_buf_link(). The oops would look something like this: ath_rx_tasklet+0x515/0x53b ath9k_tasklet+0x48 tasklet_action __do_softirq irq_exit do_IRQ RIP: ath_rx_buf_link+0x3a We correct this by handling the requeue directly on the ath_rx_tasklet() and trying to allocate an skb *prior* to sending up the last hardware processed skb. If we run out of memory this gauranteees we have skbs to work with while it simply drops new received frames. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: Dont update rate control for every AMPDUVasanthakumar Thiagarajan2008-11-263-1/+5
| | | | | | | | | | | | | | | | | | Update the rate control only with the tx status of first AMPDU of an aggregation. This patch fixes frequent drops in throughput. Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: Use straightforward PCI routines to setup the TX buffer.Sujith2008-11-261-16/+7
| | | | | | | | | | Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: Update TX trigger level on a FIFO underrun.Sujith2008-11-261-1/+3
| | | | | | | | | | Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: Fix bug in deciphering channel flagsSujith2008-11-262-7/+7
| | | | | | | | | | | | | | | | | | | | CHANNEL_CCK flag is set for all 2 Ghz channels, so IS_CHAN_CCK() would turn out to be true for all channles in that band. Use IS_CHAN_B() now, which checks the channel mode and not the channel flags. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: Move TX completion routine to xmit.cSujith2008-11-263-65/+56
| | | | | | | | | | | | | | | | Also, use a helper function to setup RC status data when processing completed TX descriptors. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: Use helpersSujith2008-11-262-197/+194
| | | | | | | | | | | | | | | | Break down huge functions, use helper functions or macros instead. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: General code scrubSujith2008-11-266-412/+277
| | | | | | | | | | | | | | | | | | | | | | Replace TRUE/FALSE macros with VALID/INVALID macros. Follow a consistent variable convention. Remove unnecessary comments. Add all RC phy macros into a single enum. Merge functions into reasonably sized entities. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: Remove ath9k_rate_tableSujith2008-11-2610-374/+132
| | | | | | | | | | | | | | | | Maintaining two sets of rate tables is redundant, remove one and use struct ath_rate_table exclusively. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: Use rate_driver_dataSujith2008-11-265-226/+108
| | | | | | | | | | | | | | | | | | | | Remove the hack using vif, and use rate_driver_data within skb->cb to hold driver specific rate information. Setup the rate series in the skb's tx control area and remove all references to ath9k specific rate series ( using struct ath_rc_series ). Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: Remove ath_rate_softcSujith2008-11-265-87/+45
| | | | | | | | | | | | | | | | | | Move the hw rate tables to ath_softc, and access them directly. tx_triglevel_max is global, move it to ath_rate_node. Now that ath_rate_softc is gone, rate control attach becomes simpler. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: Remove rate control reference in VAPSujith2008-11-264-85/+50
| | | | | | | | | | | | | | | | Rate control init is now confined to itself, using the HT capabilites of the STA from rate_init(). Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: We don't support non-HT devices, so remove superfluous code.Sujith2008-11-261-39/+0
| | | | | | | | | | Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: Revamp RX handlingSujith2008-11-263-519/+209
| | | | | | | | | | | | | | | | | | | | | | Remove a lot of old, crufty code and make RX status reporting a bit sane and clean. Do not do anything to the RX skb before unmapping. So in ath_rx_tasklet(), move the skb_put() after PCI unmap. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: Nuke fixed rate handling in driverSujith2008-11-265-137/+4
| | | | | | | | | | Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: Remove half/quarter rate tablesSujith2008-11-263-127/+20
| | | | | | | | | | | | | | Half/Quarter rate tables are needed only for legacy chipsets. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: Remove ath_rate_newassoc()Sujith2008-11-261-25/+8
| | | | | | | | | | Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: Remove ath_setup_ratesSujith2008-11-261-26/+10
| | | | | | | | | | | | | | Setup legacy rates in ath_rate_init() itself. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
generated by cgit (git 2.34.1) at 2024-11-20 07:32:22 +0000