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path: root/drivers/net/wireless/ath5k/desc.c
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2008-11-06ath5k: correct handling of rx status fieldsBob Copeland
ath5k_rx_status fields rs_antenna and rs_more are u8s, but we were setting them with bitwise ANDs of 32-bit values. As a consequence, jumbo frames would not be discarded as intended. Then, because the hw rate value of such frames is zero, and, since "ath5k: rates cleanup", we do not fall back to the basic rate, such packets would trigger the following WARN_ON: ------------[ cut here ]------------ WARNING: at net/mac80211/rx.c:2192 __ieee80211_rx+0x4d/0x57e [mac80211]() Modules linked in: ath5k af_packet sha256_generic aes_i586 aes_generic cbc loop i915 drm binfmt_misc acpi_cpufreq fan container nls_utf8 hfsplus dm_crypt dm_mod kvm_intel kvm fuse sbp2 snd_hda_intel snd_pcm_oss snd_pcm snd_mixer_oss snd_seq_dummy snd_seq_oss arc4 joydev hid_apple ecb snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device usbhid appletouch mac80211 sky2 snd ehci_hcd ohci1394 bitrev crc32 sr_mod cdrom rtc sg uhci_hcd snd_page_alloc cfg80211 ieee1394 thermal ac battery processor button evdev unix [last unloaded: ath5k] Pid: 0, comm: swapper Tainted: G W 2.6.28-rc2-wl #14 Call Trace: [<c0123d1e>] warn_on_slowpath+0x41/0x5b [<c012005d>] ? sched_debug_show+0x31e/0x9c6 [<c012489f>] ? vprintk+0x369/0x389 [<c0309539>] ? _spin_unlock_irqrestore+0x54/0x58 [<c011cd8f>] ? try_to_wake_up+0x14f/0x15a [<f81918cb>] __ieee80211_rx+0x4d/0x57e [mac80211] [<f828872a>] ath5k_tasklet_rx+0x5a1/0x5e4 [ath5k] [<c013b9cd>] ? clockevents_program_event+0xd4/0xe3 [<c01283a9>] tasklet_action+0x94/0xfd [<c0127d19>] __do_softirq+0x8c/0x13e [<c0127e04>] do_softirq+0x39/0x55 [<c0128082>] irq_exit+0x46/0x85 [<c010576c>] do_IRQ+0x9a/0xb2 [<c010461c>] common_interrupt+0x28/0x30 [<f80e934a>] ? acpi_idle_enter_bm+0x2ad/0x31b [processor] [<c02976bf>] cpuidle_idle_call+0x65/0x9a [<c010262c>] cpu_idle+0x76/0xa6 [<c02fb402>] rest_init+0x62/0x64 Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-10-06ath5k: implement multi-rate retry support, fix tx status reportingFelix Fietkau
Clean up the tx status reporting, fix retry counters (short retries are virtual collisions, not actual retries). Implement multi-rate retry support. This also fixes strong throughput fluctuations with rc80211_pid Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-09-05ath5k: HW code cleanupNick Kossifidis
* No code changes... * Split hw.c to multiple files for better maintenance and add some documentation on each file code is going to grow soon (eeprom.c for example is going to get much stuff currently developed on ath_info) so it's better this way. * Rename following functions to maintain naming scheme: ah_setup_xtx_desc -> ah_setup_mrr_tx_desc (Because xtx doesn't say much, it's actually a multi-rate-retry tx descriptor) ath5k_hw_put_tx/rx_buf - > ath5k_hw_set_tx/rxdp ath5k_hw_get_tx/rx_buf -> ath5k_hw_get_tx/rxdp (We don't put any "buf" we set descriptor pointers on hw) ath5k_hw_tx_start -> ath5k_hw_start_tx_dma ath5k_hw_start_rx -> ath5k_hw_start_rx_dma ath5k_hw_stop_pcu_recv -> ath5k_hw_stop_rx_pcu (It's easier this way to identify them, we also have ath5k_hw_start_rx_pcu which completes the set) ath5k_hw_set_intr -> ath5k_hw_set_imr (As in get_isr we set imr here, not "intr") * Move ath5k_hw_setup_rx_desc on ah->ah_setup_rx_desc so we can include support for different rx descriptors in the future * Further cleanups so that checkpatch doesn't complain (only some > 80 col warnings for eeprom.h and reg.h as usual due to comments) Tested on 5211 and 5213 cards and works ok. Changes-licensed-under: ISC Signed-off-by: Nick Kossifidis <mickflemm@gmail.com> Acked-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>