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path: root/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
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2012-01-11iwlwifi: do not set the sequence control bit is not neededWey-Yi Guy
commit 123877b80ed62c3b897c53357b622574c023b642 upstream. Check the IEEE80211_TX_CTL_ASSIGN_SEQ flag from mac80211, then decide how to set the TX_CMD_FLG_SEQ_CTL_MSK bit. Setting the wrong bit in BAR frame whill make the firmware to increment the sequence number which is incorrect and cause unknown behavior. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Change-Id: I3b610f6383fc35467b8451621b7ce4d154196e4a Reviewed-on: http://git-master/r/74190 Reviewed-by: Varun Wadekar <vwadekar@nvidia.com> Tested-by: Varun Wadekar <vwadekar@nvidia.com>
2011-07-21iwlagn: testmode fixed rate available for testmode onlyWey-Yi Guy
Move tm_fixed_rate inside CONFIG_IWLWIFI_DEVICE_SVTOOL and only available when the option is enable. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2011-07-21iwlagn: transport layer receives struct iwl_trans*Emmanuel Grumbach
It still holds a pointer to iwl_priv. But hopefully this will disappear at some point. Also add the multiple inclusion protection to iwl-trans.h that was forgotten. Move iwl-trans structures to iwl-trans.h Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2011-07-21iwlagn: SCD configuration for AMPDU moves to transport layerEmmanuel Grumbach
All the configurations of the HW for AMPDU are now in the transport layer. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2011-07-16iwlagn: add tx start API to transport layerEmmanuel Grumbach
tx start will start the tx queues: basically configure the SCD Remove the IWLAGN prefix to SCD defines on the way. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.guy@intel.com>
2011-07-16iwlagn: simplify TX flags assignmentsJohannes Berg
The first assignment of TX_CMD_FLG_SEQ_CTL_MSK for ack-expected mgmt frames is overwritten later in the function, so it's useless. Also, probe response frames, BACK request and others there are mutually exclusive so can be moved into an else branch. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2011-07-16iwlagn: move Tx datapath to transport layerEmmanuel Grumbach
Split the Tx datapath in two parts: * the first deals with the Tx cmd composition * the second attaches the skb + Tx cmd to the queues Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2011-07-11iwlagn: remove iwlagn_hcmd_utils structure and call directlyDon Fry
Not needed since the driver split. Move single use routines to calling location and keep static where possible. Signed-off-by: Don Fry <donald.h.fry@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-11iwlagn: separate and enhance the fixed rate fromWey-Yi Guy
For testing purpose, we need better control of msc from user application. Separate the fixed_rate between debugfs and testmode and enforce it. Signed-off-by: Kenny Hsu <kenny.hsu@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-11iwlagn: remove code duplicationEmmanuel Grumbach
Code duplication was needed during the move, not needed any more. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-11iwlagn: add an API for TX stopEmmanuel Grumbach
Tx stop moves to transport layer. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-11iwlagn: add an API to free the TX contextEmmanuel Grumbach
Tx free functions move to the transport layer. Unify the functions that deal with tx queues and cmd queue. Since the CMD queue is not fully allocated, but uses the q->n_bd / q->window trick, the release flow of TX queue and CMD queue was different. iwlagn_txq_free_tfd receives now the index of the TFD to be freed, which allows to unify the release flow for all the queues. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-08mac80211: fix TKIP races, make API easier to useJohannes Berg
Our current TKIP code races against itself on TX since we can process multiple packets at the same time on different ACs, but they all share the TX context for TKIP. This can lead to bad IVs etc. Also, the crypto offload helper code just obtains the P1K/P2K from the cache, and can update it as well, but there's no guarantee that packets are really processed in order. To fix these issues, first introduce a spinlock that will protect the IV16/IV32 values in the TX context. This first step makes sure that we don't assign the same IV multiple times or get confused in other ways. Secondly, change the way the P1K cache works. I add a field "p1k_iv32" that stores the value of the IV32 when the P1K was last recomputed, and if different from the last time, then a new P1K is recomputed. This can cause the P1K computation to flip back and forth if packets are processed out of order. All this also happens under the new spinlock. Finally, because there are argument differences, split up the ieee80211_get_tkip_key() API into ieee80211_get_tkip_p1k() and ieee80211_get_tkip_p2k() and give them the correct arguments. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-01iwlagn: move the tx allocation funcs to the transport layerEmmanuel Grumbach
These functions allocate all the Tx context. Only the simple tx_init is exported as API. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2011-06-18iwlagn: don't use the PCI wrappers for DMA operationEmmanuel Grumbach
Get a pointer to the struct device during probe and get the rid of all the PCI specific DMA wrappers. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2011-06-18iwlagn: add get_dev to iwl_bus_opsEmmanuel Grumbach
Bus specific layer must know how to return the struct device* of the device. Implement that as a callback of iwl_bus_ops and use that callback instead of using the priv->pdev pointer which is meant to disappear soon. Since the struct device * is needed in hot path, iwl_bus holds a pointer to it instead of calling get_dev all the time. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2011-06-01iwlagn: change log to better represent the state of aggregation processWey-Yi Guy
Multiple A-MPDU actions will received from mac80211 while setting up the aggregation queue, change the message log to better represent the states. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01iwlwifi: disambiguate invalid DMA index warningsDaniel Halperin
The exact same error message is used in three different functions in iwlagn. Add the function name to the error string to disambiguate where the error is coming from. Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-05-24Merge ↵John W. Linville
ssh://master.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
2011-05-16Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem Conflicts: drivers/net/wireless/iwlwifi/iwl-agn-tx.c net/mac80211/sta_info.h
2011-05-13iwlagn: remove unused pad argumentJohannes Berg
The pad argument to iwlagn_txq_free_tfd isn't used, remove it. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2011-05-13iwlagn: clean up TXQ indirectionJohannes Berg
All of these functions no longer need to be accessed indirectly since they're shared in all AGN devices. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2011-05-06iwlagn: check DMA mapping errorsJohannes Berg
DMA mappings can fail, but the current code doesn't check for that. Add checking, which requires some restructuring for proper error paths. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2011-05-06iwlagn: remove bytecount indirectionJohannes Berg
All AGN devices need the bytecount table, so remove the indirection and make the functions static again. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2011-05-06iwlagn: dont update bytecount table for command queueJohannes Berg
The device doesn't use the bytecount table for the command queue, only for aggregation queues to make aggregation decisions. So don't update it for the command queue (and we even updated it with wrong values). Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2011-05-05Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/tg3.c
2011-04-29iwlagn: fix "Received BA when not expected"Stanislaw Gruszka
Need to use broadcast sta_id for management frames, otherwise we broke BA session in the firmware and get messages like that: "Received BA when not expected" or (on older kernels): "BA scd_flow 0 does not match txq_id 10" This fix regression introduced in 2.6.35 during station management code rewrite by: commit 2a87c26bbe9587baeb9e56d3ce0b4971bd777643 Author: Johannes Berg <johannes.berg@intel.com> Date: Fri Apr 30 11:30:45 2010 -0700 iwlwifi: use iwl_find_station less Patch partially resolve: https://bugzilla.kernel.org/show_bug.cgi?id=16691 However, there are still 11n performance problems on 4965 and 5xxx devices that need to be investigated. Cc: stable@kernel.org # 2.6.35+ Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-04-26Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2011-04-26Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Resolved logic conflicts causing a build failure due to drivers/net/r8169.c changes using a patch from Stephen Rothwell. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-20iwlwifi: fix skb usage after freeStanislaw Gruszka
Since commit a120e912eb51e347f36c71b60a1d13af74d30e83 Author: Stanislaw Gruszka <sgruszka@redhat.com> Date: Fri Feb 19 15:47:33 2010 -0800 iwlwifi: sanity check before counting number of tfds can be free we use skb->data after calling ieee80211_tx_status_irqsafe(), which could free skb instantly. On current kernels I do not observe practical problems related with bug, but on 2.6.35.y it cause random system hangs when stressing wireless link. Cc: stable@kernel.org # 2.6.32+ Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-04-07iwlagn: change Copyright to 2011Wey-Yi Guy
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-03-25iwlwifi: cleanup and bugfix tx aggregation codeDaniel Halperin
Since the driver split, there's no need for no_agg_framecnt_info since all devices have this set to false. Secondly, the compressed block ack handling code was broken. Fix this. (1) A shift less than zero simply implies that the buffer wrapped, this is expected. Remove the incorrect comment. (2) The (agg->frame_count > (64-sh)) condition can happen if the last frame is dropped. E.g., if I send 7 frames and the 6th is received but the 7th is lost, the other side may only shift the window 6, not 7 frames since the last bit is a 0. This is perfectly fine behavior and doesn't invalidate the feedback. (3) Store the feedback from a Compressed BA in the first newly received frame, rather than the start of the window. This way it will get processed by the rate selection code. Feedback stored in a non-received frame is likely to get overwritten by the retransmission. This is based on the approach taken by minstrel_ht. Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2011-03-25iwlagn: fix aggregation queue scheduler setupJohannes Berg
iwlagn's hardware scheduler needs to be set up with the right aggregation frame limit and buffer sizes. To achieve this, we need to move the hardware queue setup to when the session becomes operational. Tested-by: Daniel Halperin <dhalperi@cs.washington.edu> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2011-03-25iwlagn: clean up TX aggregation codeJohannes Berg
Since the driver split, there's no need for function pointers any more for aggregation queue setup and teardown as all devices now share the same code. Simplify this. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2011-02-28iwlwifi: fix dma mappings and skbs leakStanislaw Gruszka
Since commit commit 470058e0ad82fcfaaffd57307d8bf8c094e8e9d7 "iwlwifi: avoid Tx queue memory allocation in interface down" we do not unmap dma and free skbs when down device and there is pending transfer. What in consequence may cause that system hung (waiting for free skb's) when performing shutdown at iptables module unload. DMA leak manifest itself following warning: WARNING: at lib/dma-debug.c:689 dma_debug_device_change+0x15a/0x1b0() Hardware name: HP xw8600 Workstation pci 0000:80:00.0: DMA-API: device driver has pending DMA allocations while released from device [count=240] Modules linked in: iwlagn(-) aes_x86_64 aes_generic fuse cpufreq_ondemand acpi_cpufreq freq_table mperf xt_physdev ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 iptable_filter ip_tables ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables ipv6 ext3 jbd dm_mirror dm_region_hash dm_log dm_mod uinput hp_wmi sparse_keymap sg wmi microcode serio_raw tg3 arc4 ecb shpchp mac80211 cfg80211 rfkill ext4 mbcache jbd2 sr_mod cdrom sd_mod crc_t10dif firewire_ohci firewire_core crc_itu_t mptsas mptscsih mptbase scsi_transport_sas pata_acpi ata_generic ata_piix ahci libahci floppy nouveau ttm drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: iwlagn] Pid: 9131, comm: rmmod Tainted: G W 2.6.38-rc6-wl+ #33 Call Trace: [<ffffffff810649ef>] ? warn_slowpath_common+0x7f/0xc0 [<ffffffff81064ae6>] ? warn_slowpath_fmt+0x46/0x50 [<ffffffff812320ab>] ? dma_debug_device_change+0xdb/0x1b0 [<ffffffff8123212a>] ? dma_debug_device_change+0x15a/0x1b0 [<ffffffff8149dc18>] ? notifier_call_chain+0x58/0xb0 [<ffffffff8108e370>] ? __blocking_notifier_call_chain+0x60/0x90 [<ffffffff8108e3b6>] ? blocking_notifier_call_chain+0x16/0x20 [<ffffffff812f570c>] ? __device_release_driver+0xbc/0xe0 [<ffffffff812f5808>] ? driver_detach+0xd8/0xe0 [<ffffffff812f45d1>] ? bus_remove_driver+0x91/0x100 [<ffffffff812f6022>] ? driver_unregister+0x62/0xa0 [<ffffffff8123d5d4>] ? pci_unregister_driver+0x44/0xa0 [<ffffffffa05632d1>] ? iwl_exit+0x15/0x1c [iwlagn] [<ffffffff810ab492>] ? sys_delete_module+0x1a2/0x270 [<ffffffff81498da9>] ? trace_hardirqs_on_thunk+0x3a/0x3f [<ffffffff8100bf42>] ? system_call_fastpath+0x16/0x1b I still can observe above warning after apply patch, but it is very hard to reproduce it, and have count=1. Whereas that one is easy to reproduce using debugfs force_reset while transmitting data, and have very big counts eg. 240, like quoted here. So count=1 WARNING seems to be different issue that need to be resolved separately. v1 -> v2: fix infinity loop bug I made during "for" to "while" loop transition. v2 -> v3: remove unneeded EXPORT_SYMBOL Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-21iwlwifi: implement remain-on-channelJohannes Berg
For device supporting PAN/P2P, use the PAN context to implement the remain-on-channel operation using device offloads so that the filters in the device will be programmed correctly -- otherwise we cannot receive any probe request frames during off-channel periods. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2010-12-13iwlagn: fix debug variable accessJohannes Berg
The compiler correctly warns: iwl-agn-tx.c: In function ‘iwlagn_tx_status_reply_compressed_ba’: iwl-agn-tx.c:1240: warning: ‘bitmap’ may be used uninitialized in this function Move the debug print to the branch that reads the bitmap, and move the variables too so it's more obvious where they are needed. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-11-24iwlwifi: use mac80211 AC definesJohannes Berg
Instead of hardcoding the numbers that must match mac80211, use the constants. Not that this means we could change the constants, but at least this way it's clearer. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-11-24iwlagn: fix station powersave accounting for aggregationJohannes Berg
Since aggregation queues are station-specific, the device will not reject packets in them but rather will stop the appropriate aggregation queues when a station goes to sleep. I forgot to account for this in the driver, so if a station went to sleep that had aggregation enabled, traffic would stop indefinitely. Fix this by only accounting frames queued on the normal AC queues for associated station. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-11-24iwlagn: remove powersave warningJohannes Berg
Through races, a packet may be enqueued for transmission to a station while that station is going to sleep, in which case the warning here triggers. Instead of warning, check the condition -- if this packet is not a PS-poll response then we still enqueue it but it will be rejected by the device since the station is marked as asleep. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-11-22Merge branch 'wireless-next-2.6' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-2.6
2010-11-16iwlagn: simplify iwlagn_tx_skbStanislaw Gruszka
We can simplify length calculation in iwlagn_tx_skb, that function is enough complex, without fuzz it more than necessary. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-11-16iwlwifi: always build swq_id as virtual queue IDJohannes Berg
Previously, we used the swq_id's mechanism to have AC and HW queue different only for aggregation queues. To be able to fix a bug with iPAN simply always build the swq_id as ac | (hwq << 2) and remove the flag bit. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-11-16iwlwifi: pass txq to wake/stop queueJohannes Berg
Instead of passing the txq->swq_id, pass the txq struct directly to make sure that in the future nobody will pass an invalid number. Only three places actually change from using the txq_id or the skb's queue_mapping to now using txq->swq_id as well. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-11-16iwlagn: remove unused variable swq_idJohannes Berg
Simply remove the unused variable swq_id. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-11-16iwlagn: used frame count info in compressed ba packetWey-Yi Guy
For newer devices, uCode provide both "number of frames sent" and "number of frames acked" information inside the compressed_ba packet. So instead of figure the success/failure information through the bitmap, use those information which is much betrer approach. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-10-25iwlwifi: quiet a noisy printkDon Fry
Timing issues in microcode for some devices can cause a compressed BA to be sent to the driver prior to returning any a-MPDU notification. Traces show RTS-CTS is exchanged and then the timer fires which causes an empty BA to be sent which acknowledges nothing. This results in a noisy printk. Only print the message if the bitmap is non-zero. Signed-off-by: Don Fry <donald.h.fry@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-07iwlwifi: move tx fail code to agnJohannes Berg
The code to print out TX failure reasons is AGN specific, so it can be in the AGN module. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-10-06iwlagn: reduce redundant parameter definitionsWey-Yi Guy
move paramater definitions to a device paramater structure only leaving the device name, which antennas are used and what firmware file to use in the iwl_cfg structure. this will not completely remove the redundancies but greatly reduce them for devices that only vary by name or antennas. the parameters that are more likely to change within a given device family are left in iwl_cfg. also separate bt param structure added to help reduce more. Signed-off-by: Jay Sternberg <jay.e.sternberg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
2010-08-27iwlagn: queue frames according to contextJohannes Berg
Frames for different contexts need to be put on different queues, and multicast after DTIM frames have a special queue yet which also depends on the context, so put all this into the context. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
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