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freebsd/sys/dev/iwn/if_iwnvar.h
Adrian Chadd 3233d0c654 First cut at attempting to buffer frames until we see a beacon. 
The iwn(4) firmware forgets most of its channel state after an RXON
command.  This means that any beacons its seen on passive 5GHz channels
are forgotten upon an association/authorisation request.
This unfortuantely means that 5GHz association almost always fails -
the assoc and/or auth frames are dropped with a status of "passive
channel, haven't seen a beacon yet." (0x90.)

So:

* add an xmit queue, global, to buffer frames
* modify the xmit path to use the mbuf tag from net80211
  to specify raw frame details
* buffer xmit frames from both raw and non-raw paths
* if a beacon is seen in the RX path, schedule a taskqueue to
  send said frames and un-buffer things.
* flush frames during state change back to INIT, or NIC
  down/up/detach.

This isn't the final shape I'd like this to be in but it certainly
is better than 5GHz "not working at all".

Tested:

* Intel 5100, STA mode (before spilling coffee)
* Intel 5300, STA mode (after spilling coffee)

Story:

* This has been bugging me at work for months, which I just
  worked around by throwing an ath(4) into my Lenovo T400 cardbus
  slot.

* Our ops director discovered indeed FreeBSD runs well on the
  Lenovo T420p, except for that pesky 5GHz thing.  So now developers
  also can have a T420p running FreeBSD to do work with.
  Their #1 feedback to me - "boy it'd be nice if 5GHz wifi worked."

* .. then, I was at NANOG but stuck with 5GHz only wifi and no ath(4)
  NIC to put in a laptop - and I snapped.

Thus, the reason this is actually work related.

MFC after:	2 weeks
Sponsored by:	Norse Corp, Inc.
2015-06-19 01:44:17 +00:00

440 lines
11 KiB
C
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/* $FreeBSD$ */
/* $OpenBSD: if_iwnvar.h,v 1.18 2010/04/30 16:06:46 damien Exp $ */
/*-
* Copyright (c) 2013 Cedric GROSS <cg@cgross.info>
* Copyright (c) 2011 Intel Corporation
* Copyright (c) 2007, 2008
* Damien Bergamini <damien.bergamini@free.fr>
* Copyright (c) 2008 Sam Leffler, Errno Consulting
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
enum iwn_rxon_ctx_id {
IWN_RXON_BSS_CTX,
IWN_RXON_PAN_CTX,
IWN_NUM_RXON_CTX
};
struct iwn_pan_slot {
uint16_t time;
uint8_t type;
uint8_t reserved;
} __packed;
struct iwn_pan_params_cmd {
uint16_t flags;
#define IWN_PAN_PARAMS_FLG_SLOTTED_MODE (1 << 3)
uint8_t reserved;
uint8_t num_slots;
struct iwn_pan_slot slots[10];
} __packed;
struct iwn_led_mode
{
uint8_t led_cur_mode;
uint64_t led_cur_bt;
uint64_t led_last_bt;
uint64_t led_cur_tpt;
uint64_t led_last_tpt;
uint64_t led_bt_diff;
int led_cur_time;
int led_last_time;
};
struct iwn_rx_radiotap_header {
struct ieee80211_radiotap_header wr_ihdr;
uint64_t wr_tsft;
uint8_t wr_flags;
uint8_t wr_rate;
uint16_t wr_chan_freq;
uint16_t wr_chan_flags;
int8_t wr_dbm_antsignal;
int8_t wr_dbm_antnoise;
} __packed;
#define IWN_RX_RADIOTAP_PRESENT \
((1 << IEEE80211_RADIOTAP_TSFT) | \
(1 << IEEE80211_RADIOTAP_FLAGS) | \
(1 << IEEE80211_RADIOTAP_RATE) | \
(1 << IEEE80211_RADIOTAP_CHANNEL) | \
(1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) | \
(1 << IEEE80211_RADIOTAP_DBM_ANTNOISE))
struct iwn_tx_radiotap_header {
struct ieee80211_radiotap_header wt_ihdr;
uint8_t wt_flags;
uint8_t wt_rate;
uint16_t wt_chan_freq;
uint16_t wt_chan_flags;
} __packed;
#define IWN_TX_RADIOTAP_PRESENT \
((1 << IEEE80211_RADIOTAP_FLAGS) | \
(1 << IEEE80211_RADIOTAP_RATE) | \
(1 << IEEE80211_RADIOTAP_CHANNEL))
struct iwn_dma_info {
bus_dma_tag_t tag;
bus_dmamap_t map;
bus_dma_segment_t seg;
bus_addr_t paddr;
caddr_t vaddr;
bus_size_t size;
};
struct iwn_tx_data {
bus_dmamap_t map;
bus_addr_t cmd_paddr;
bus_addr_t scratch_paddr;
struct mbuf *m;
struct ieee80211_node *ni;
};
struct iwn_tx_ring {
struct iwn_dma_info desc_dma;
struct iwn_dma_info cmd_dma;
struct iwn_tx_desc *desc;
struct iwn_tx_cmd *cmd;
struct iwn_tx_data data[IWN_TX_RING_COUNT];
bus_dma_tag_t data_dmat;
int qid;
int queued;
int cur;
int read;
};
struct iwn_softc;
struct iwn_rx_data {
struct mbuf *m;
bus_dmamap_t map;
};
struct iwn_rx_ring {
struct iwn_dma_info desc_dma;
struct iwn_dma_info stat_dma;
uint32_t *desc;
struct iwn_rx_status *stat;
struct iwn_rx_data data[IWN_RX_RING_COUNT];
bus_dma_tag_t data_dmat;
int cur;
};
struct iwn_node {
struct ieee80211_node ni; /* must be the first */
uint16_t disable_tid;
uint8_t id;
struct {
uint64_t bitmap;
int startidx;
int nframes;
} agg[IEEE80211_TID_SIZE];
};
struct iwn_calib_state {
uint8_t state;
#define IWN_CALIB_STATE_INIT 0
#define IWN_CALIB_STATE_ASSOC 1
#define IWN_CALIB_STATE_RUN 2
u_int nbeacons;
uint32_t noise[3];
uint32_t rssi[3];
uint32_t ofdm_x1;
uint32_t ofdm_mrc_x1;
uint32_t ofdm_x4;
uint32_t ofdm_mrc_x4;
uint32_t cck_x4;
uint32_t cck_mrc_x4;
uint32_t bad_plcp_ofdm;
uint32_t fa_ofdm;
uint32_t bad_plcp_cck;
uint32_t fa_cck;
uint32_t low_fa;
uint32_t bad_plcp_ht;
uint8_t cck_state;
#define IWN_CCK_STATE_INIT 0
#define IWN_CCK_STATE_LOFA 1
#define IWN_CCK_STATE_HIFA 2
uint8_t noise_samples[20];
u_int cur_noise_sample;
uint8_t noise_ref;
uint32_t energy_samples[10];
u_int cur_energy_sample;
uint32_t energy_cck;
};
struct iwn_calib_info {
uint8_t *buf;
u_int len;
};
struct iwn_fw_part {
const uint8_t *text;
uint32_t textsz;
const uint8_t *data;
uint32_t datasz;
};
struct iwn_fw_info {
const uint8_t *data;
size_t size;
struct iwn_fw_part init;
struct iwn_fw_part main;
struct iwn_fw_part boot;
};
struct iwn_ops {
int (*load_firmware)(struct iwn_softc *);
void (*read_eeprom)(struct iwn_softc *);
int (*post_alive)(struct iwn_softc *);
int (*nic_config)(struct iwn_softc *);
void (*update_sched)(struct iwn_softc *, int, int, uint8_t,
uint16_t);
int (*get_temperature)(struct iwn_softc *);
int (*get_rssi)(struct iwn_softc *, struct iwn_rx_stat *);
int (*set_txpower)(struct iwn_softc *,
struct ieee80211_channel *, int);
int (*init_gains)(struct iwn_softc *);
int (*set_gains)(struct iwn_softc *);
int (*add_node)(struct iwn_softc *, struct iwn_node_info *,
int);
void (*tx_done)(struct iwn_softc *, struct iwn_rx_desc *,
struct iwn_rx_data *);
void (*ampdu_tx_start)(struct iwn_softc *,
struct ieee80211_node *, int, uint8_t, uint16_t);
void (*ampdu_tx_stop)(struct iwn_softc *, int, uint8_t,
uint16_t);
};
struct iwn_vap {
struct ieee80211vap iv_vap;
uint8_t iv_ridx;
int (*iv_newstate)(struct ieee80211vap *,
enum ieee80211_state, int);
int ctx;
int beacon_int;
uint8_t macaddr[IEEE80211_ADDR_LEN];
};
#define IWN_VAP(_vap) ((struct iwn_vap *)(_vap))
struct iwn_softc {
device_t sc_dev;
struct ifnet *sc_ifp;
int sc_debug;
struct mtx sc_mtx;
u_int sc_flags;
#define IWN_FLAG_HAS_OTPROM (1 << 1)
#define IWN_FLAG_CALIB_DONE (1 << 2)
#define IWN_FLAG_USE_ICT (1 << 3)
#define IWN_FLAG_INTERNAL_PA (1 << 4)
#define IWN_FLAG_HAS_11N (1 << 6)
#define IWN_FLAG_ENH_SENS (1 << 7)
#define IWN_FLAG_ADV_BTCOEX (1 << 8)
#define IWN_FLAG_PAN_SUPPORT (1 << 9)
#define IWN_FLAG_BTCOEX (1 << 10)
uint8_t hw_type;
/* subdevice_id used to adjust configuration */
uint16_t subdevice_id;
struct iwn_ops ops;
const char *fwname;
const struct iwn_sensitivity_limits
*limits;
int ntxqs;
int firstaggqueue;
int ndmachnls;
uint8_t broadcast_id;
int rxonsz;
int schedsz;
uint32_t fw_text_maxsz;
uint32_t fw_data_maxsz;
uint32_t fwsz;
bus_size_t sched_txfact_addr;
uint32_t reset_noise_gain;
uint32_t noise_gain;
/* TX scheduler rings. */
struct iwn_dma_info sched_dma;
uint16_t *sched;
uint32_t sched_base;
/* "Keep Warm" page. */
struct iwn_dma_info kw_dma;
/* Firmware image. */
const struct firmware *fw_fp;
/* Firmware DMA transfer. */
struct iwn_dma_info fw_dma;
/* ICT table. */
struct iwn_dma_info ict_dma;
uint32_t *ict;
int ict_cur;
/* TX/RX rings. */
struct iwn_tx_ring txq[IWN5000_NTXQUEUES];
struct iwn_rx_ring rxq;
struct resource *mem;
bus_space_tag_t sc_st;
bus_space_handle_t sc_sh;
struct resource *irq;
void *sc_ih;
bus_size_t sc_sz;
int sc_cap_off; /* PCIe Capabilities. */
/* Tasks used by the driver */
struct task sc_reinit_task;
struct task sc_radioon_task;
struct task sc_radiooff_task;
struct task sc_panic_task;
struct task sc_xmit_task;
/* Taskqueue */
struct taskqueue *sc_tq;
/* Calibration information */
struct callout calib_to;
int calib_cnt;
struct iwn_calib_state calib;
int last_calib_ticks;
struct callout watchdog_to;
struct callout ct_kill_exit_to;
struct iwn_fw_info fw;
struct iwn_calib_info calibcmd[IWN5000_PHY_CALIB_MAX_RESULT];
uint32_t errptr;
struct iwn_rx_stat last_rx_stat;
int last_rx_valid;
struct iwn_ucode_info ucode_info;
struct iwn_rxon rx_on[IWN_NUM_RXON_CTX];
struct iwn_rxon *rxon;
int ctx;
struct ieee80211vap *ivap[IWN_NUM_RXON_CTX];
/* General statistics */
/*
* The statistics are reset after each channel
* change. So it may be zeroed after things like
* a background scan.
*
* So for now, this is just a cheap hack to
* expose the last received statistics dump
* via an ioctl(). Later versions of this
* could expose the last 'n' messages, or just
* provide a pipeline for the firmware responses
* via something like BPF.
*/
struct iwn_stats last_stat;
int last_stat_valid;
uint8_t uc_scan_progress;
uint32_t rawtemp;
int temp;
int noise;
uint32_t qfullmsk;
uint32_t prom_base;
struct iwn4965_eeprom_band
bands[IWN_NBANDS];
struct iwn_eeprom_chan eeprom_channels[IWN_NBANDS][IWN_MAX_CHAN_PER_BAND];
uint16_t rfcfg;
uint8_t calib_ver;
char eeprom_domain[4];
uint32_t eeprom_crystal;
int16_t eeprom_temp;
int16_t eeprom_temp_high;
int16_t eeprom_voltage;
int8_t maxpwr2GHz;
int8_t maxpwr5GHz;
int8_t maxpwr[IEEE80211_CHAN_MAX];
uint32_t tlv_feature_flags;
int32_t temp_off;
uint32_t int_mask;
uint8_t ntxchains;
uint8_t nrxchains;
uint8_t txchainmask;
uint8_t rxchainmask;
uint8_t chainmask;
int sc_tx_timer;
int sc_scan_timer;
/* Are we doing a scan? */
int sc_is_scanning;
/* Are we waiting for a beacon before xmit? */
int sc_beacon_wait;
struct ieee80211_tx_ampdu *qid2tap[IWN5000_NTXQUEUES];
int (*sc_ampdu_rx_start)(struct ieee80211_node *,
struct ieee80211_rx_ampdu *, int, int, int);
void (*sc_ampdu_rx_stop)(struct ieee80211_node *,
struct ieee80211_rx_ampdu *);
int (*sc_addba_request)(struct ieee80211_node *,
struct ieee80211_tx_ampdu *, int, int, int);
int (*sc_addba_response)(struct ieee80211_node *,
struct ieee80211_tx_ampdu *, int, int, int);
void (*sc_addba_stop)(struct ieee80211_node *,
struct ieee80211_tx_ampdu *);
struct iwn_led_mode sc_led;
struct iwn_rx_radiotap_header sc_rxtap;
struct iwn_tx_radiotap_header sc_txtap;
/* The power save level originally configured by user */
int desired_pwrsave_level;
/*
* The current power save level, this may differ from the
* configured value due to thermal throttling etc.
*/
int current_pwrsave_level;
/* For specific params */
const struct iwn_base_params *base_params;
#define IWN_UCODE_API(ver) (((ver) & 0x0000FF00) >> 8)
uint32_t ucode_rev;
/*
* Global queue for queuing xmit frames
* when we can't yet transmit (eg raw
* frames whilst waiting for beacons.)
*/
struct mbufq sc_xmit_queue;
};
#define IWN_LOCK_INIT(_sc) \
mtx_init(&(_sc)->sc_mtx, device_get_nameunit((_sc)->sc_dev), \
MTX_NETWORK_LOCK, MTX_DEF)
#define IWN_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
#define IWN_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->sc_mtx, MA_OWNED)
#define IWN_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
#define IWN_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->sc_mtx)
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