1 /******************************************************************************
3 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portionhelp of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #include <linux/etherdevice.h>
31 #include <linux/slab.h>
32 #include <linux/sched.h>
33 #include <net/mac80211.h>
34 #include <asm/unaligned.h>
35 #include "iwl-eeprom.h"
38 #include "iwl-agn-calib.h"
40 #include "iwl-modparams.h"
42 #define IWL_CMD_ENTRY(x) [x] = #x
44 const char *iwl_dvm_cmd_strings
[REPLY_MAX
] = {
45 IWL_CMD_ENTRY(REPLY_ALIVE
),
46 IWL_CMD_ENTRY(REPLY_ERROR
),
47 IWL_CMD_ENTRY(REPLY_ECHO
),
48 IWL_CMD_ENTRY(REPLY_RXON
),
49 IWL_CMD_ENTRY(REPLY_RXON_ASSOC
),
50 IWL_CMD_ENTRY(REPLY_QOS_PARAM
),
51 IWL_CMD_ENTRY(REPLY_RXON_TIMING
),
52 IWL_CMD_ENTRY(REPLY_ADD_STA
),
53 IWL_CMD_ENTRY(REPLY_REMOVE_STA
),
54 IWL_CMD_ENTRY(REPLY_REMOVE_ALL_STA
),
55 IWL_CMD_ENTRY(REPLY_TXFIFO_FLUSH
),
56 IWL_CMD_ENTRY(REPLY_WEPKEY
),
57 IWL_CMD_ENTRY(REPLY_TX
),
58 IWL_CMD_ENTRY(REPLY_LEDS_CMD
),
59 IWL_CMD_ENTRY(REPLY_TX_LINK_QUALITY_CMD
),
60 IWL_CMD_ENTRY(COEX_PRIORITY_TABLE_CMD
),
61 IWL_CMD_ENTRY(COEX_MEDIUM_NOTIFICATION
),
62 IWL_CMD_ENTRY(COEX_EVENT_CMD
),
63 IWL_CMD_ENTRY(REPLY_QUIET_CMD
),
64 IWL_CMD_ENTRY(REPLY_CHANNEL_SWITCH
),
65 IWL_CMD_ENTRY(CHANNEL_SWITCH_NOTIFICATION
),
66 IWL_CMD_ENTRY(REPLY_SPECTRUM_MEASUREMENT_CMD
),
67 IWL_CMD_ENTRY(SPECTRUM_MEASURE_NOTIFICATION
),
68 IWL_CMD_ENTRY(POWER_TABLE_CMD
),
69 IWL_CMD_ENTRY(PM_SLEEP_NOTIFICATION
),
70 IWL_CMD_ENTRY(PM_DEBUG_STATISTIC_NOTIFIC
),
71 IWL_CMD_ENTRY(REPLY_SCAN_CMD
),
72 IWL_CMD_ENTRY(REPLY_SCAN_ABORT_CMD
),
73 IWL_CMD_ENTRY(SCAN_START_NOTIFICATION
),
74 IWL_CMD_ENTRY(SCAN_RESULTS_NOTIFICATION
),
75 IWL_CMD_ENTRY(SCAN_COMPLETE_NOTIFICATION
),
76 IWL_CMD_ENTRY(BEACON_NOTIFICATION
),
77 IWL_CMD_ENTRY(REPLY_TX_BEACON
),
78 IWL_CMD_ENTRY(WHO_IS_AWAKE_NOTIFICATION
),
79 IWL_CMD_ENTRY(QUIET_NOTIFICATION
),
80 IWL_CMD_ENTRY(REPLY_TX_PWR_TABLE_CMD
),
81 IWL_CMD_ENTRY(MEASURE_ABORT_NOTIFICATION
),
82 IWL_CMD_ENTRY(REPLY_BT_CONFIG
),
83 IWL_CMD_ENTRY(REPLY_STATISTICS_CMD
),
84 IWL_CMD_ENTRY(STATISTICS_NOTIFICATION
),
85 IWL_CMD_ENTRY(REPLY_CARD_STATE_CMD
),
86 IWL_CMD_ENTRY(CARD_STATE_NOTIFICATION
),
87 IWL_CMD_ENTRY(MISSED_BEACONS_NOTIFICATION
),
88 IWL_CMD_ENTRY(REPLY_CT_KILL_CONFIG_CMD
),
89 IWL_CMD_ENTRY(SENSITIVITY_CMD
),
90 IWL_CMD_ENTRY(REPLY_PHY_CALIBRATION_CMD
),
91 IWL_CMD_ENTRY(REPLY_RX_PHY_CMD
),
92 IWL_CMD_ENTRY(REPLY_RX_MPDU_CMD
),
93 IWL_CMD_ENTRY(REPLY_RX
),
94 IWL_CMD_ENTRY(REPLY_COMPRESSED_BA
),
95 IWL_CMD_ENTRY(CALIBRATION_CFG_CMD
),
96 IWL_CMD_ENTRY(CALIBRATION_RES_NOTIFICATION
),
97 IWL_CMD_ENTRY(CALIBRATION_COMPLETE_NOTIFICATION
),
98 IWL_CMD_ENTRY(REPLY_TX_POWER_DBM_CMD
),
99 IWL_CMD_ENTRY(TEMPERATURE_NOTIFICATION
),
100 IWL_CMD_ENTRY(TX_ANT_CONFIGURATION_CMD
),
101 IWL_CMD_ENTRY(REPLY_BT_COEX_PROFILE_NOTIF
),
102 IWL_CMD_ENTRY(REPLY_BT_COEX_PRIO_TABLE
),
103 IWL_CMD_ENTRY(REPLY_BT_COEX_PROT_ENV
),
104 IWL_CMD_ENTRY(REPLY_WIPAN_PARAMS
),
105 IWL_CMD_ENTRY(REPLY_WIPAN_RXON
),
106 IWL_CMD_ENTRY(REPLY_WIPAN_RXON_TIMING
),
107 IWL_CMD_ENTRY(REPLY_WIPAN_RXON_ASSOC
),
108 IWL_CMD_ENTRY(REPLY_WIPAN_QOS_PARAM
),
109 IWL_CMD_ENTRY(REPLY_WIPAN_WEPKEY
),
110 IWL_CMD_ENTRY(REPLY_WIPAN_P2P_CHANNEL_SWITCH
),
111 IWL_CMD_ENTRY(REPLY_WIPAN_NOA_NOTIFICATION
),
112 IWL_CMD_ENTRY(REPLY_WIPAN_DEACTIVATION_COMPLETE
),
113 IWL_CMD_ENTRY(REPLY_WOWLAN_PATTERNS
),
114 IWL_CMD_ENTRY(REPLY_WOWLAN_WAKEUP_FILTER
),
115 IWL_CMD_ENTRY(REPLY_WOWLAN_TSC_RSC_PARAMS
),
116 IWL_CMD_ENTRY(REPLY_WOWLAN_TKIP_PARAMS
),
117 IWL_CMD_ENTRY(REPLY_WOWLAN_KEK_KCK_MATERIAL
),
118 IWL_CMD_ENTRY(REPLY_WOWLAN_GET_STATUS
),
119 IWL_CMD_ENTRY(REPLY_D3_CONFIG
),
123 /******************************************************************************
125 * Generic RX handler implementations
127 ******************************************************************************/
129 static int iwlagn_rx_reply_error(struct iwl_priv
*priv
,
130 struct iwl_rx_cmd_buffer
*rxb
,
131 struct iwl_device_cmd
*cmd
)
133 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
134 struct iwl_error_resp
*err_resp
= (void *)pkt
->data
;
136 IWL_ERR(priv
, "Error Reply type 0x%08X cmd REPLY_ERROR (0x%02X) "
137 "seq 0x%04X ser 0x%08X\n",
138 le32_to_cpu(err_resp
->error_type
),
140 le16_to_cpu(err_resp
->bad_cmd_seq_num
),
141 le32_to_cpu(err_resp
->error_info
));
145 static int iwlagn_rx_csa(struct iwl_priv
*priv
, struct iwl_rx_cmd_buffer
*rxb
,
146 struct iwl_device_cmd
*cmd
)
148 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
149 struct iwl_csa_notification
*csa
= (void *)pkt
->data
;
152 * See iwlagn_mac_channel_switch.
154 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
155 struct iwl_rxon_cmd
*rxon
= (void *)&ctx
->active
;
157 if (!test_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
))
160 if (!le32_to_cpu(csa
->status
) && csa
->channel
== priv
->switch_channel
) {
161 rxon
->channel
= csa
->channel
;
162 ctx
->staging
.channel
= csa
->channel
;
163 IWL_DEBUG_11H(priv
, "CSA notif: channel %d\n",
164 le16_to_cpu(csa
->channel
));
165 iwl_chswitch_done(priv
, true);
167 IWL_ERR(priv
, "CSA notif (fail) : channel %d\n",
168 le16_to_cpu(csa
->channel
));
169 iwl_chswitch_done(priv
, false);
175 static int iwlagn_rx_spectrum_measure_notif(struct iwl_priv
*priv
,
176 struct iwl_rx_cmd_buffer
*rxb
,
177 struct iwl_device_cmd
*cmd
)
179 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
180 struct iwl_spectrum_notification
*report
= (void *)pkt
->data
;
182 if (!report
->state
) {
184 "Spectrum Measure Notification: Start\n");
188 memcpy(&priv
->measure_report
, report
, sizeof(*report
));
189 priv
->measurement_status
|= MEASUREMENT_READY
;
193 static int iwlagn_rx_pm_sleep_notif(struct iwl_priv
*priv
,
194 struct iwl_rx_cmd_buffer
*rxb
,
195 struct iwl_device_cmd
*cmd
)
197 #ifdef CONFIG_IWLWIFI_DEBUG
198 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
199 struct iwl_sleep_notification
*sleep
= (void *)pkt
->data
;
200 IWL_DEBUG_RX(priv
, "sleep mode: %d, src: %d\n",
201 sleep
->pm_sleep_mode
, sleep
->pm_wakeup_src
);
206 static int iwlagn_rx_pm_debug_statistics_notif(struct iwl_priv
*priv
,
207 struct iwl_rx_cmd_buffer
*rxb
,
208 struct iwl_device_cmd
*cmd
)
210 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
211 u32 __maybe_unused len
=
212 le32_to_cpu(pkt
->len_n_flags
) & FH_RSCSR_FRAME_SIZE_MSK
;
213 IWL_DEBUG_RADIO(priv
, "Dumping %d bytes of unhandled "
214 "notification for PM_DEBUG_STATISTIC_NOTIFIC:\n", len
);
215 iwl_print_hex_dump(priv
, IWL_DL_RADIO
, pkt
->data
, len
);
219 static int iwlagn_rx_beacon_notif(struct iwl_priv
*priv
,
220 struct iwl_rx_cmd_buffer
*rxb
,
221 struct iwl_device_cmd
*cmd
)
223 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
224 struct iwlagn_beacon_notif
*beacon
= (void *)pkt
->data
;
225 #ifdef CONFIG_IWLWIFI_DEBUG
226 u16 status
= le16_to_cpu(beacon
->beacon_notify_hdr
.status
.status
);
227 u8 rate
= iwl_hw_get_rate(beacon
->beacon_notify_hdr
.rate_n_flags
);
229 IWL_DEBUG_RX(priv
, "beacon status %#x, retries:%d ibssmgr:%d "
230 "tsf:0x%.8x%.8x rate:%d\n",
231 status
& TX_STATUS_MSK
,
232 beacon
->beacon_notify_hdr
.failure_frame
,
233 le32_to_cpu(beacon
->ibss_mgr_status
),
234 le32_to_cpu(beacon
->high_tsf
),
235 le32_to_cpu(beacon
->low_tsf
), rate
);
238 priv
->ibss_manager
= le32_to_cpu(beacon
->ibss_mgr_status
);
244 * iwl_good_plcp_health - checks for plcp error.
246 * When the plcp error is exceeding the thresholds, reset the radio
247 * to improve the throughput.
249 static bool iwlagn_good_plcp_health(struct iwl_priv
*priv
,
250 struct statistics_rx_phy
*cur_ofdm
,
251 struct statistics_rx_ht_phy
*cur_ofdm_ht
,
255 int threshold
= priv
->plcp_delta_threshold
;
257 if (threshold
== IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE
) {
258 IWL_DEBUG_RADIO(priv
, "plcp_err check disabled\n");
262 delta
= le32_to_cpu(cur_ofdm
->plcp_err
) -
263 le32_to_cpu(priv
->statistics
.rx_ofdm
.plcp_err
) +
264 le32_to_cpu(cur_ofdm_ht
->plcp_err
) -
265 le32_to_cpu(priv
->statistics
.rx_ofdm_ht
.plcp_err
);
267 /* Can be negative if firmware reset statistics */
271 if ((delta
* 100 / msecs
) > threshold
) {
272 IWL_DEBUG_RADIO(priv
,
273 "plcp health threshold %u delta %d msecs %u\n",
274 threshold
, delta
, msecs
);
281 int iwl_force_rf_reset(struct iwl_priv
*priv
, bool external
)
283 struct iwl_rf_reset
*rf_reset
;
285 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
288 if (!iwl_is_any_associated(priv
)) {
289 IWL_DEBUG_SCAN(priv
, "force reset rejected: not associated\n");
293 rf_reset
= &priv
->rf_reset
;
294 rf_reset
->reset_request_count
++;
295 if (!external
&& rf_reset
->last_reset_jiffies
&&
296 time_after(rf_reset
->last_reset_jiffies
+
297 IWL_DELAY_NEXT_FORCE_RF_RESET
, jiffies
)) {
298 IWL_DEBUG_INFO(priv
, "RF reset rejected\n");
299 rf_reset
->reset_reject_count
++;
302 rf_reset
->reset_success_count
++;
303 rf_reset
->last_reset_jiffies
= jiffies
;
306 * There is no easy and better way to force reset the radio,
307 * the only known method is switching channel which will force to
308 * reset and tune the radio.
309 * Use internal short scan (single channel) operation to should
310 * achieve this objective.
311 * Driver should reset the radio when number of consecutive missed
312 * beacon, or any other uCode error condition detected.
314 IWL_DEBUG_INFO(priv
, "perform radio reset.\n");
315 iwl_internal_short_hw_scan(priv
);
320 static void iwlagn_recover_from_statistics(struct iwl_priv
*priv
,
321 struct statistics_rx_phy
*cur_ofdm
,
322 struct statistics_rx_ht_phy
*cur_ofdm_ht
,
323 struct statistics_tx
*tx
,
328 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
331 msecs
= jiffies_to_msecs(stamp
- priv
->rx_statistics_jiffies
);
333 /* Only gather statistics and update time stamp when not associated */
334 if (!iwl_is_any_associated(priv
))
337 /* Do not check/recover when do not have enough statistics data */
341 if (iwlwifi_mod_params
.plcp_check
&&
342 !iwlagn_good_plcp_health(priv
, cur_ofdm
, cur_ofdm_ht
, msecs
))
343 iwl_force_rf_reset(priv
, false);
346 /* Calculate noise level, based on measurements during network silence just
347 * before arriving beacon. This measurement can be done only if we know
348 * exactly when to expect beacons, therefore only when we're associated. */
349 static void iwlagn_rx_calc_noise(struct iwl_priv
*priv
)
351 struct statistics_rx_non_phy
*rx_info
;
352 int num_active_rx
= 0;
353 int total_silence
= 0;
354 int bcn_silence_a
, bcn_silence_b
, bcn_silence_c
;
357 rx_info
= &priv
->statistics
.rx_non_phy
;
360 le32_to_cpu(rx_info
->beacon_silence_rssi_a
) & IN_BAND_FILTER
;
362 le32_to_cpu(rx_info
->beacon_silence_rssi_b
) & IN_BAND_FILTER
;
364 le32_to_cpu(rx_info
->beacon_silence_rssi_c
) & IN_BAND_FILTER
;
367 total_silence
+= bcn_silence_a
;
371 total_silence
+= bcn_silence_b
;
375 total_silence
+= bcn_silence_c
;
379 /* Average among active antennas */
381 last_rx_noise
= (total_silence
/ num_active_rx
) - 107;
383 last_rx_noise
= IWL_NOISE_MEAS_NOT_AVAILABLE
;
385 IWL_DEBUG_CALIB(priv
, "inband silence a %u, b %u, c %u, dBm %d\n",
386 bcn_silence_a
, bcn_silence_b
, bcn_silence_c
,
390 #ifdef CONFIG_IWLWIFI_DEBUGFS
392 * based on the assumption of all statistics counter are in DWORD
393 * FIXME: This function is for debugging, do not deal with
394 * the case of counters roll-over.
396 static void accum_stats(__le32
*prev
, __le32
*cur
, __le32
*delta
,
397 __le32
*max_delta
, __le32
*accum
, int size
)
402 i
< size
/ sizeof(__le32
);
403 i
++, prev
++, cur
++, delta
++, max_delta
++, accum
++) {
404 if (le32_to_cpu(*cur
) > le32_to_cpu(*prev
)) {
405 *delta
= cpu_to_le32(
406 le32_to_cpu(*cur
) - le32_to_cpu(*prev
));
407 le32_add_cpu(accum
, le32_to_cpu(*delta
));
408 if (le32_to_cpu(*delta
) > le32_to_cpu(*max_delta
))
415 iwlagn_accumulative_statistics(struct iwl_priv
*priv
,
416 struct statistics_general_common
*common
,
417 struct statistics_rx_non_phy
*rx_non_phy
,
418 struct statistics_rx_phy
*rx_ofdm
,
419 struct statistics_rx_ht_phy
*rx_ofdm_ht
,
420 struct statistics_rx_phy
*rx_cck
,
421 struct statistics_tx
*tx
,
422 struct statistics_bt_activity
*bt_activity
)
424 #define ACCUM(_name) \
425 accum_stats((__le32 *)&priv->statistics._name, \
427 (__le32 *)&priv->delta_stats._name, \
428 (__le32 *)&priv->max_delta_stats._name, \
429 (__le32 *)&priv->accum_stats._name, \
444 iwlagn_accumulative_statistics(struct iwl_priv
*priv
,
445 struct statistics_general_common
*common
,
446 struct statistics_rx_non_phy
*rx_non_phy
,
447 struct statistics_rx_phy
*rx_ofdm
,
448 struct statistics_rx_ht_phy
*rx_ofdm_ht
,
449 struct statistics_rx_phy
*rx_cck
,
450 struct statistics_tx
*tx
,
451 struct statistics_bt_activity
*bt_activity
)
456 static int iwlagn_rx_statistics(struct iwl_priv
*priv
,
457 struct iwl_rx_cmd_buffer
*rxb
,
458 struct iwl_device_cmd
*cmd
)
460 unsigned long stamp
= jiffies
;
461 const int reg_recalib_period
= 60;
463 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
464 u32 len
= le32_to_cpu(pkt
->len_n_flags
) & FH_RSCSR_FRAME_SIZE_MSK
;
466 struct statistics_general_common
*common
;
467 struct statistics_rx_non_phy
*rx_non_phy
;
468 struct statistics_rx_phy
*rx_ofdm
;
469 struct statistics_rx_ht_phy
*rx_ofdm_ht
;
470 struct statistics_rx_phy
*rx_cck
;
471 struct statistics_tx
*tx
;
472 struct statistics_bt_activity
*bt_activity
;
474 len
-= sizeof(struct iwl_cmd_header
); /* skip header */
476 IWL_DEBUG_RX(priv
, "Statistics notification received (%d bytes).\n",
479 spin_lock(&priv
->statistics
.lock
);
481 if (len
== sizeof(struct iwl_bt_notif_statistics
)) {
482 struct iwl_bt_notif_statistics
*stats
;
483 stats
= (void *)&pkt
->data
;
485 common
= &stats
->general
.common
;
486 rx_non_phy
= &stats
->rx
.general
.common
;
487 rx_ofdm
= &stats
->rx
.ofdm
;
488 rx_ofdm_ht
= &stats
->rx
.ofdm_ht
;
489 rx_cck
= &stats
->rx
.cck
;
491 bt_activity
= &stats
->general
.activity
;
493 #ifdef CONFIG_IWLWIFI_DEBUGFS
494 /* handle this exception directly */
495 priv
->statistics
.num_bt_kills
= stats
->rx
.general
.num_bt_kills
;
496 le32_add_cpu(&priv
->statistics
.accum_num_bt_kills
,
497 le32_to_cpu(stats
->rx
.general
.num_bt_kills
));
499 } else if (len
== sizeof(struct iwl_notif_statistics
)) {
500 struct iwl_notif_statistics
*stats
;
501 stats
= (void *)&pkt
->data
;
503 common
= &stats
->general
.common
;
504 rx_non_phy
= &stats
->rx
.general
;
505 rx_ofdm
= &stats
->rx
.ofdm
;
506 rx_ofdm_ht
= &stats
->rx
.ofdm_ht
;
507 rx_cck
= &stats
->rx
.cck
;
511 WARN_ONCE(1, "len %d doesn't match BT (%zu) or normal (%zu)\n",
512 len
, sizeof(struct iwl_bt_notif_statistics
),
513 sizeof(struct iwl_notif_statistics
));
514 spin_unlock(&priv
->statistics
.lock
);
518 change
= common
->temperature
!= priv
->statistics
.common
.temperature
||
519 (*flag
& STATISTICS_REPLY_FLG_HT40_MODE_MSK
) !=
520 (priv
->statistics
.flag
& STATISTICS_REPLY_FLG_HT40_MODE_MSK
);
522 iwlagn_accumulative_statistics(priv
, common
, rx_non_phy
, rx_ofdm
,
523 rx_ofdm_ht
, rx_cck
, tx
, bt_activity
);
525 iwlagn_recover_from_statistics(priv
, rx_ofdm
, rx_ofdm_ht
, tx
, stamp
);
527 priv
->statistics
.flag
= *flag
;
528 memcpy(&priv
->statistics
.common
, common
, sizeof(*common
));
529 memcpy(&priv
->statistics
.rx_non_phy
, rx_non_phy
, sizeof(*rx_non_phy
));
530 memcpy(&priv
->statistics
.rx_ofdm
, rx_ofdm
, sizeof(*rx_ofdm
));
531 memcpy(&priv
->statistics
.rx_ofdm_ht
, rx_ofdm_ht
, sizeof(*rx_ofdm_ht
));
532 memcpy(&priv
->statistics
.rx_cck
, rx_cck
, sizeof(*rx_cck
));
533 memcpy(&priv
->statistics
.tx
, tx
, sizeof(*tx
));
534 #ifdef CONFIG_IWLWIFI_DEBUGFS
536 memcpy(&priv
->statistics
.bt_activity
, bt_activity
,
537 sizeof(*bt_activity
));
540 priv
->rx_statistics_jiffies
= stamp
;
542 set_bit(STATUS_STATISTICS
, &priv
->status
);
544 /* Reschedule the statistics timer to occur in
545 * reg_recalib_period seconds to ensure we get a
546 * thermal update even if the uCode doesn't give
548 mod_timer(&priv
->statistics_periodic
, jiffies
+
549 msecs_to_jiffies(reg_recalib_period
* 1000));
551 if (unlikely(!test_bit(STATUS_SCANNING
, &priv
->status
)) &&
552 (pkt
->hdr
.cmd
== STATISTICS_NOTIFICATION
)) {
553 iwlagn_rx_calc_noise(priv
);
554 queue_work(priv
->workqueue
, &priv
->run_time_calib_work
);
556 if (priv
->lib
->temperature
&& change
)
557 priv
->lib
->temperature(priv
);
559 spin_unlock(&priv
->statistics
.lock
);
564 static int iwlagn_rx_reply_statistics(struct iwl_priv
*priv
,
565 struct iwl_rx_cmd_buffer
*rxb
,
566 struct iwl_device_cmd
*cmd
)
568 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
569 struct iwl_notif_statistics
*stats
= (void *)pkt
->data
;
571 if (le32_to_cpu(stats
->flag
) & UCODE_STATISTICS_CLEAR_MSK
) {
572 #ifdef CONFIG_IWLWIFI_DEBUGFS
573 memset(&priv
->accum_stats
, 0,
574 sizeof(priv
->accum_stats
));
575 memset(&priv
->delta_stats
, 0,
576 sizeof(priv
->delta_stats
));
577 memset(&priv
->max_delta_stats
, 0,
578 sizeof(priv
->max_delta_stats
));
580 IWL_DEBUG_RX(priv
, "Statistics have been cleared\n");
582 iwlagn_rx_statistics(priv
, rxb
, cmd
);
586 /* Handle notification from uCode that card's power state is changing
587 * due to software, hardware, or critical temperature RFKILL */
588 static int iwlagn_rx_card_state_notif(struct iwl_priv
*priv
,
589 struct iwl_rx_cmd_buffer
*rxb
,
590 struct iwl_device_cmd
*cmd
)
592 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
593 struct iwl_card_state_notif
*card_state_notif
= (void *)pkt
->data
;
594 u32 flags
= le32_to_cpu(card_state_notif
->flags
);
595 unsigned long status
= priv
->status
;
597 IWL_DEBUG_RF_KILL(priv
, "Card state received: HW:%s SW:%s CT:%s\n",
598 (flags
& HW_CARD_DISABLED
) ? "Kill" : "On",
599 (flags
& SW_CARD_DISABLED
) ? "Kill" : "On",
600 (flags
& CT_CARD_DISABLED
) ?
601 "Reached" : "Not reached");
603 if (flags
& (SW_CARD_DISABLED
| HW_CARD_DISABLED
|
606 iwl_write32(priv
->trans
, CSR_UCODE_DRV_GP1_SET
,
607 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
609 iwl_write_direct32(priv
->trans
, HBUS_TARG_MBX_C
,
610 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
612 if (!(flags
& RXON_CARD_DISABLED
)) {
613 iwl_write32(priv
->trans
, CSR_UCODE_DRV_GP1_CLR
,
614 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED
);
615 iwl_write_direct32(priv
->trans
, HBUS_TARG_MBX_C
,
616 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED
);
618 if (flags
& CT_CARD_DISABLED
)
619 iwl_tt_enter_ct_kill(priv
);
621 if (!(flags
& CT_CARD_DISABLED
))
622 iwl_tt_exit_ct_kill(priv
);
624 if (flags
& HW_CARD_DISABLED
)
625 set_bit(STATUS_RF_KILL_HW
, &priv
->status
);
627 clear_bit(STATUS_RF_KILL_HW
, &priv
->status
);
630 if (!(flags
& RXON_CARD_DISABLED
))
631 iwl_scan_cancel(priv
);
633 if ((test_bit(STATUS_RF_KILL_HW
, &status
) !=
634 test_bit(STATUS_RF_KILL_HW
, &priv
->status
)))
635 wiphy_rfkill_set_hw_state(priv
->hw
->wiphy
,
636 test_bit(STATUS_RF_KILL_HW
, &priv
->status
));
638 wake_up(&priv
->trans
->wait_command_queue
);
642 static int iwlagn_rx_missed_beacon_notif(struct iwl_priv
*priv
,
643 struct iwl_rx_cmd_buffer
*rxb
,
644 struct iwl_device_cmd
*cmd
)
647 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
648 struct iwl_missed_beacon_notif
*missed_beacon
= (void *)pkt
->data
;
650 if (le32_to_cpu(missed_beacon
->consecutive_missed_beacons
) >
651 priv
->missed_beacon_threshold
) {
652 IWL_DEBUG_CALIB(priv
,
653 "missed bcn cnsq %d totl %d rcd %d expctd %d\n",
654 le32_to_cpu(missed_beacon
->consecutive_missed_beacons
),
655 le32_to_cpu(missed_beacon
->total_missed_becons
),
656 le32_to_cpu(missed_beacon
->num_recvd_beacons
),
657 le32_to_cpu(missed_beacon
->num_expected_beacons
));
658 if (!test_bit(STATUS_SCANNING
, &priv
->status
))
659 iwl_init_sensitivity(priv
);
664 /* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
665 * This will be used later in iwl_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
666 static int iwlagn_rx_reply_rx_phy(struct iwl_priv
*priv
,
667 struct iwl_rx_cmd_buffer
*rxb
,
668 struct iwl_device_cmd
*cmd
)
670 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
672 priv
->last_phy_res_valid
= true;
673 memcpy(&priv
->last_phy_res
, pkt
->data
,
674 sizeof(struct iwl_rx_phy_res
));
679 * returns non-zero if packet should be dropped
681 static int iwlagn_set_decrypted_flag(struct iwl_priv
*priv
,
682 struct ieee80211_hdr
*hdr
,
684 struct ieee80211_rx_status
*stats
)
686 u16 fc
= le16_to_cpu(hdr
->frame_control
);
689 * All contexts have the same setting here due to it being
690 * a module parameter, so OK to check any context.
692 if (priv
->contexts
[IWL_RXON_CTX_BSS
].active
.filter_flags
&
693 RXON_FILTER_DIS_DECRYPT_MSK
)
696 if (!(fc
& IEEE80211_FCTL_PROTECTED
))
699 IWL_DEBUG_RX(priv
, "decrypt_res:0x%x\n", decrypt_res
);
700 switch (decrypt_res
& RX_RES_STATUS_SEC_TYPE_MSK
) {
701 case RX_RES_STATUS_SEC_TYPE_TKIP
:
702 /* The uCode has got a bad phase 1 Key, pushes the packet.
703 * Decryption will be done in SW. */
704 if ((decrypt_res
& RX_RES_STATUS_DECRYPT_TYPE_MSK
) ==
705 RX_RES_STATUS_BAD_KEY_TTAK
)
708 case RX_RES_STATUS_SEC_TYPE_WEP
:
709 if ((decrypt_res
& RX_RES_STATUS_DECRYPT_TYPE_MSK
) ==
710 RX_RES_STATUS_BAD_ICV_MIC
) {
711 /* bad ICV, the packet is destroyed since the
712 * decryption is inplace, drop it */
713 IWL_DEBUG_RX(priv
, "Packet destroyed\n");
716 case RX_RES_STATUS_SEC_TYPE_CCMP
:
717 if ((decrypt_res
& RX_RES_STATUS_DECRYPT_TYPE_MSK
) ==
718 RX_RES_STATUS_DECRYPT_OK
) {
719 IWL_DEBUG_RX(priv
, "hw decrypt successfully!!!\n");
720 stats
->flag
|= RX_FLAG_DECRYPTED
;
730 static void iwlagn_pass_packet_to_mac80211(struct iwl_priv
*priv
,
731 struct ieee80211_hdr
*hdr
,
734 struct iwl_rx_cmd_buffer
*rxb
,
735 struct ieee80211_rx_status
*stats
)
738 __le16 fc
= hdr
->frame_control
;
739 struct iwl_rxon_context
*ctx
;
740 unsigned int hdrlen
, fraglen
;
742 /* We only process data packets if the interface is open */
743 if (unlikely(!priv
->is_open
)) {
744 IWL_DEBUG_DROP_LIMIT(priv
,
745 "Dropping packet while interface is not open.\n");
749 /* In case of HW accelerated crypto and bad decryption, drop */
750 if (!iwlwifi_mod_params
.sw_crypto
&&
751 iwlagn_set_decrypted_flag(priv
, hdr
, ampdu_status
, stats
))
754 /* Dont use dev_alloc_skb(), we'll have enough headroom once
755 * ieee80211_hdr pulled.
757 skb
= alloc_skb(128, GFP_ATOMIC
);
759 IWL_ERR(priv
, "alloc_skb failed\n");
762 hdrlen
= min_t(unsigned int, len
, skb_tailroom(skb
));
763 memcpy(skb_put(skb
, hdrlen
), hdr
, hdrlen
);
764 fraglen
= len
- hdrlen
;
767 int offset
= (void *)hdr
- rxb_addr(rxb
) + rxb_offset(rxb
);
769 skb_add_rx_frag(skb
, 0, rxb_steal_page(rxb
), offset
,
770 fraglen
, rxb
->truesize
);
774 * Wake any queues that were stopped due to a passive channel tx
775 * failure. This can happen because the regulatory enforcement in
776 * the device waits for a beacon before allowing transmission,
777 * sometimes even after already having transmitted frames for the
778 * association because the new RXON may reset the information.
780 if (unlikely(ieee80211_is_beacon(fc
) && priv
->passive_no_rx
)) {
781 for_each_context(priv
, ctx
) {
782 if (compare_ether_addr(hdr
->addr3
,
783 ctx
->active
.bssid_addr
))
785 iwlagn_lift_passive_no_rx(priv
);
789 memcpy(IEEE80211_SKB_RXCB(skb
), stats
, sizeof(*stats
));
791 ieee80211_rx(priv
->hw
, skb
);
794 static u32
iwlagn_translate_rx_status(struct iwl_priv
*priv
, u32 decrypt_in
)
798 if ((decrypt_in
& RX_RES_STATUS_STATION_FOUND
) ==
799 RX_RES_STATUS_STATION_FOUND
)
800 decrypt_out
|= (RX_RES_STATUS_STATION_FOUND
|
801 RX_RES_STATUS_NO_STATION_INFO_MISMATCH
);
803 decrypt_out
|= (decrypt_in
& RX_RES_STATUS_SEC_TYPE_MSK
);
805 /* packet was not encrypted */
806 if ((decrypt_in
& RX_RES_STATUS_SEC_TYPE_MSK
) ==
807 RX_RES_STATUS_SEC_TYPE_NONE
)
810 /* packet was encrypted with unknown alg */
811 if ((decrypt_in
& RX_RES_STATUS_SEC_TYPE_MSK
) ==
812 RX_RES_STATUS_SEC_TYPE_ERR
)
815 /* decryption was not done in HW */
816 if ((decrypt_in
& RX_MPDU_RES_STATUS_DEC_DONE_MSK
) !=
817 RX_MPDU_RES_STATUS_DEC_DONE_MSK
)
820 switch (decrypt_in
& RX_RES_STATUS_SEC_TYPE_MSK
) {
822 case RX_RES_STATUS_SEC_TYPE_CCMP
:
823 /* alg is CCM: check MIC only */
824 if (!(decrypt_in
& RX_MPDU_RES_STATUS_MIC_OK
))
826 decrypt_out
|= RX_RES_STATUS_BAD_ICV_MIC
;
828 decrypt_out
|= RX_RES_STATUS_DECRYPT_OK
;
832 case RX_RES_STATUS_SEC_TYPE_TKIP
:
833 if (!(decrypt_in
& RX_MPDU_RES_STATUS_TTAK_OK
)) {
835 decrypt_out
|= RX_RES_STATUS_BAD_KEY_TTAK
;
838 /* fall through if TTAK OK */
840 if (!(decrypt_in
& RX_MPDU_RES_STATUS_ICV_OK
))
841 decrypt_out
|= RX_RES_STATUS_BAD_ICV_MIC
;
843 decrypt_out
|= RX_RES_STATUS_DECRYPT_OK
;
847 IWL_DEBUG_RX(priv
, "decrypt_in:0x%x decrypt_out = 0x%x\n",
848 decrypt_in
, decrypt_out
);
853 /* Calc max signal level (dBm) among 3 possible receivers */
854 static int iwlagn_calc_rssi(struct iwl_priv
*priv
,
855 struct iwl_rx_phy_res
*rx_resp
)
857 /* data from PHY/DSP regarding signal strength, etc.,
858 * contents are always there, not configurable by host
860 struct iwlagn_non_cfg_phy
*ncphy
=
861 (struct iwlagn_non_cfg_phy
*)rx_resp
->non_cfg_phy_buf
;
862 u32 val
, rssi_a
, rssi_b
, rssi_c
, max_rssi
;
865 val
= le32_to_cpu(ncphy
->non_cfg_phy
[IWLAGN_RX_RES_AGC_IDX
]);
866 agc
= (val
& IWLAGN_OFDM_AGC_MSK
) >> IWLAGN_OFDM_AGC_BIT_POS
;
868 /* Find max rssi among 3 possible receivers.
869 * These values are measured by the digital signal processor (DSP).
870 * They should stay fairly constant even as the signal strength varies,
871 * if the radio's automatic gain control (AGC) is working right.
872 * AGC value (see below) will provide the "interesting" info.
874 val
= le32_to_cpu(ncphy
->non_cfg_phy
[IWLAGN_RX_RES_RSSI_AB_IDX
]);
875 rssi_a
= (val
& IWLAGN_OFDM_RSSI_INBAND_A_BITMSK
) >>
876 IWLAGN_OFDM_RSSI_A_BIT_POS
;
877 rssi_b
= (val
& IWLAGN_OFDM_RSSI_INBAND_B_BITMSK
) >>
878 IWLAGN_OFDM_RSSI_B_BIT_POS
;
879 val
= le32_to_cpu(ncphy
->non_cfg_phy
[IWLAGN_RX_RES_RSSI_C_IDX
]);
880 rssi_c
= (val
& IWLAGN_OFDM_RSSI_INBAND_C_BITMSK
) >>
881 IWLAGN_OFDM_RSSI_C_BIT_POS
;
883 max_rssi
= max_t(u32
, rssi_a
, rssi_b
);
884 max_rssi
= max_t(u32
, max_rssi
, rssi_c
);
886 IWL_DEBUG_STATS(priv
, "Rssi In A %d B %d C %d Max %d AGC dB %d\n",
887 rssi_a
, rssi_b
, rssi_c
, max_rssi
, agc
);
889 /* dBm = max_rssi dB - agc dB - constant.
890 * Higher AGC (higher radio gain) means lower signal. */
891 return max_rssi
- agc
- IWLAGN_RSSI_OFFSET
;
894 /* Called for REPLY_RX (legacy ABG frames), or
895 * REPLY_RX_MPDU_CMD (HT high-throughput N frames). */
896 static int iwlagn_rx_reply_rx(struct iwl_priv
*priv
,
897 struct iwl_rx_cmd_buffer
*rxb
,
898 struct iwl_device_cmd
*cmd
)
900 struct ieee80211_hdr
*header
;
901 struct ieee80211_rx_status rx_status
;
902 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
903 struct iwl_rx_phy_res
*phy_res
;
904 __le32 rx_pkt_status
;
905 struct iwl_rx_mpdu_res_start
*amsdu
;
911 * REPLY_RX and REPLY_RX_MPDU_CMD are handled differently.
912 * REPLY_RX: physical layer info is in this buffer
913 * REPLY_RX_MPDU_CMD: physical layer info was sent in separate
914 * command and cached in priv->last_phy_res
916 * Here we set up local variables depending on which command is
919 if (pkt
->hdr
.cmd
== REPLY_RX
) {
920 phy_res
= (struct iwl_rx_phy_res
*)pkt
->data
;
921 header
= (struct ieee80211_hdr
*)(pkt
->data
+ sizeof(*phy_res
)
922 + phy_res
->cfg_phy_cnt
);
924 len
= le16_to_cpu(phy_res
->byte_count
);
925 rx_pkt_status
= *(__le32
*)(pkt
->data
+ sizeof(*phy_res
) +
926 phy_res
->cfg_phy_cnt
+ len
);
927 ampdu_status
= le32_to_cpu(rx_pkt_status
);
929 if (!priv
->last_phy_res_valid
) {
930 IWL_ERR(priv
, "MPDU frame without cached PHY data\n");
933 phy_res
= &priv
->last_phy_res
;
934 amsdu
= (struct iwl_rx_mpdu_res_start
*)pkt
->data
;
935 header
= (struct ieee80211_hdr
*)(pkt
->data
+ sizeof(*amsdu
));
936 len
= le16_to_cpu(amsdu
->byte_count
);
937 rx_pkt_status
= *(__le32
*)(pkt
->data
+ sizeof(*amsdu
) + len
);
938 ampdu_status
= iwlagn_translate_rx_status(priv
,
939 le32_to_cpu(rx_pkt_status
));
942 if ((unlikely(phy_res
->cfg_phy_cnt
> 20))) {
943 IWL_DEBUG_DROP(priv
, "dsp size out of range [0,20]: %d\n",
944 phy_res
->cfg_phy_cnt
);
948 if (!(rx_pkt_status
& RX_RES_STATUS_NO_CRC32_ERROR
) ||
949 !(rx_pkt_status
& RX_RES_STATUS_NO_RXE_OVERFLOW
)) {
950 IWL_DEBUG_RX(priv
, "Bad CRC or FIFO: 0x%08X.\n",
951 le32_to_cpu(rx_pkt_status
));
955 /* This will be used in several places later */
956 rate_n_flags
= le32_to_cpu(phy_res
->rate_n_flags
);
958 /* rx_status carries information about the packet to mac80211 */
959 rx_status
.mactime
= le64_to_cpu(phy_res
->timestamp
);
960 rx_status
.band
= (phy_res
->phy_flags
& RX_RES_PHY_FLAGS_BAND_24_MSK
) ?
961 IEEE80211_BAND_2GHZ
: IEEE80211_BAND_5GHZ
;
963 ieee80211_channel_to_frequency(le16_to_cpu(phy_res
->channel
),
966 iwlagn_hwrate_to_mac80211_idx(rate_n_flags
, rx_status
.band
);
969 /* TSF isn't reliable. In order to allow smooth user experience,
970 * this W/A doesn't propagate it to the mac80211 */
971 /*rx_status.flag |= RX_FLAG_MACTIME_MPDU;*/
973 priv
->ucode_beacon_time
= le32_to_cpu(phy_res
->beacon_time_stamp
);
975 /* Find max signal strength (dBm) among 3 antenna/receiver chains */
976 rx_status
.signal
= iwlagn_calc_rssi(priv
, phy_res
);
978 IWL_DEBUG_STATS_LIMIT(priv
, "Rssi %d, TSF %llu\n",
979 rx_status
.signal
, (unsigned long long)rx_status
.mactime
);
984 * It seems that the antenna field in the phy flags value
985 * is actually a bit field. This is undefined by radiotap,
986 * it wants an actual antenna number but I always get "7"
987 * for most legacy frames I receive indicating that the
988 * same frame was received on all three RX chains.
990 * I think this field should be removed in favor of a
991 * new 802.11n radiotap field "RX chains" that is defined
995 (le16_to_cpu(phy_res
->phy_flags
) & RX_RES_PHY_FLAGS_ANTENNA_MSK
)
996 >> RX_RES_PHY_FLAGS_ANTENNA_POS
;
998 /* set the preamble flag if appropriate */
999 if (phy_res
->phy_flags
& RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK
)
1000 rx_status
.flag
|= RX_FLAG_SHORTPRE
;
1002 /* Set up the HT phy flags */
1003 if (rate_n_flags
& RATE_MCS_HT_MSK
)
1004 rx_status
.flag
|= RX_FLAG_HT
;
1005 if (rate_n_flags
& RATE_MCS_HT40_MSK
)
1006 rx_status
.flag
|= RX_FLAG_40MHZ
;
1007 if (rate_n_flags
& RATE_MCS_SGI_MSK
)
1008 rx_status
.flag
|= RX_FLAG_SHORT_GI
;
1010 iwlagn_pass_packet_to_mac80211(priv
, header
, len
, ampdu_status
,
1015 static int iwlagn_rx_noa_notification(struct iwl_priv
*priv
,
1016 struct iwl_rx_cmd_buffer
*rxb
,
1017 struct iwl_device_cmd
*cmd
)
1019 struct iwl_wipan_noa_data
*new_data
, *old_data
;
1020 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1021 struct iwl_wipan_noa_notification
*noa_notif
= (void *)pkt
->data
;
1023 /* no condition -- we're in softirq */
1024 old_data
= rcu_dereference_protected(priv
->noa_data
, true);
1026 if (noa_notif
->noa_active
) {
1027 u32 len
= le16_to_cpu(noa_notif
->noa_attribute
.length
);
1030 /* EID, len, OUI, subtype */
1031 len
+= 1 + 1 + 3 + 1;
1032 /* P2P id, P2P length */
1036 new_data
= kmalloc(sizeof(*new_data
) + len
, GFP_ATOMIC
);
1038 new_data
->length
= len
;
1039 new_data
->data
[0] = WLAN_EID_VENDOR_SPECIFIC
;
1040 new_data
->data
[1] = len
- 2; /* not counting EID, len */
1041 new_data
->data
[2] = (WLAN_OUI_WFA
>> 16) & 0xff;
1042 new_data
->data
[3] = (WLAN_OUI_WFA
>> 8) & 0xff;
1043 new_data
->data
[4] = (WLAN_OUI_WFA
>> 0) & 0xff;
1044 new_data
->data
[5] = WLAN_OUI_TYPE_WFA_P2P
;
1045 memcpy(&new_data
->data
[6], &noa_notif
->noa_attribute
,
1051 rcu_assign_pointer(priv
->noa_data
, new_data
);
1054 kfree_rcu(old_data
, rcu_head
);
1060 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
1062 * Setup the RX handlers for each of the reply types sent from the uCode
1065 void iwl_setup_rx_handlers(struct iwl_priv
*priv
)
1067 int (**handlers
)(struct iwl_priv
*priv
, struct iwl_rx_cmd_buffer
*rxb
,
1068 struct iwl_device_cmd
*cmd
);
1070 handlers
= priv
->rx_handlers
;
1072 handlers
[REPLY_ERROR
] = iwlagn_rx_reply_error
;
1073 handlers
[CHANNEL_SWITCH_NOTIFICATION
] = iwlagn_rx_csa
;
1074 handlers
[SPECTRUM_MEASURE_NOTIFICATION
] =
1075 iwlagn_rx_spectrum_measure_notif
;
1076 handlers
[PM_SLEEP_NOTIFICATION
] = iwlagn_rx_pm_sleep_notif
;
1077 handlers
[PM_DEBUG_STATISTIC_NOTIFIC
] =
1078 iwlagn_rx_pm_debug_statistics_notif
;
1079 handlers
[BEACON_NOTIFICATION
] = iwlagn_rx_beacon_notif
;
1080 handlers
[REPLY_ADD_STA
] = iwl_add_sta_callback
;
1082 handlers
[REPLY_WIPAN_NOA_NOTIFICATION
] = iwlagn_rx_noa_notification
;
1085 * The same handler is used for both the REPLY to a discrete
1086 * statistics request from the host as well as for the periodic
1087 * statistics notifications (after received beacons) from the uCode.
1089 handlers
[REPLY_STATISTICS_CMD
] = iwlagn_rx_reply_statistics
;
1090 handlers
[STATISTICS_NOTIFICATION
] = iwlagn_rx_statistics
;
1092 iwl_setup_rx_scan_handlers(priv
);
1094 handlers
[CARD_STATE_NOTIFICATION
] = iwlagn_rx_card_state_notif
;
1095 handlers
[MISSED_BEACONS_NOTIFICATION
] =
1096 iwlagn_rx_missed_beacon_notif
;
1099 handlers
[REPLY_RX_PHY_CMD
] = iwlagn_rx_reply_rx_phy
;
1100 handlers
[REPLY_RX_MPDU_CMD
] = iwlagn_rx_reply_rx
;
1103 handlers
[REPLY_COMPRESSED_BA
] =
1104 iwlagn_rx_reply_compressed_ba
;
1106 priv
->rx_handlers
[REPLY_TX
] = iwlagn_rx_reply_tx
;
1108 /* set up notification wait support */
1109 iwl_notification_wait_init(&priv
->notif_wait
);
1111 /* Set up BT Rx handlers */
1112 if (priv
->cfg
->bt_params
)
1113 iwlagn_bt_rx_handler_setup(priv
);
1116 int iwl_rx_dispatch(struct iwl_op_mode
*op_mode
, struct iwl_rx_cmd_buffer
*rxb
,
1117 struct iwl_device_cmd
*cmd
)
1119 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1120 struct iwl_priv
*priv
= IWL_OP_MODE_GET_DVM(op_mode
);
1121 void (*pre_rx_handler
)(struct iwl_priv
*,
1122 struct iwl_rx_cmd_buffer
*);
1126 * Do the notification wait before RX handlers so
1127 * even if the RX handler consumes the RXB we have
1128 * access to it in the notification wait entry.
1130 iwl_notification_wait_notify(&priv
->notif_wait
, pkt
);
1132 /* RX data may be forwarded to userspace (using pre_rx_handler) in one
1133 * of two cases: the first, that the user owns the uCode through
1134 * testmode - in such case the pre_rx_handler is set and no further
1135 * processing takes place. The other case is when the user want to
1136 * monitor the rx w/o affecting the regular flow - the pre_rx_handler
1137 * will be set but the ownership flag != IWL_OWNERSHIP_TM and the flow
1139 * We need to use ACCESS_ONCE to prevent a case where the handler
1140 * changes between the check and the call.
1142 pre_rx_handler
= ACCESS_ONCE(priv
->pre_rx_handler
);
1144 pre_rx_handler(priv
, rxb
);
1145 if (priv
->ucode_owner
!= IWL_OWNERSHIP_TM
) {
1146 /* Based on type of command response or notification,
1147 * handle those that need handling via function in
1148 * rx_handlers table. See iwl_setup_rx_handlers() */
1149 if (priv
->rx_handlers
[pkt
->hdr
.cmd
]) {
1150 priv
->rx_handlers_stats
[pkt
->hdr
.cmd
]++;
1151 err
= priv
->rx_handlers
[pkt
->hdr
.cmd
] (priv
, rxb
, cmd
);
1153 /* No handling needed */
1154 IWL_DEBUG_RX(priv
, "No handler needed for %s, 0x%02x\n",
1155 iwl_dvm_get_cmd_string(pkt
->hdr
.cmd
),