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iwlwifi: mvm: add UMAC scan iteration complete notification 

Add UMAC scan iteration complete notification. This notification can
be enabled by setting scan_iter_notif_enabled through debugfs.
Upon receiving this notification, print the list of channels that
have been scanned in this iteration. This is useful for debugging.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Avraham Stern 2015-03-23 15:09:27 +02:00 committed by Emmanuel Grumbach
parent 1fa1bcc02c
commit ee9219b2c2
5 changed files with 53 additions and 2 deletions
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23
drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h
View File

@ -837,4 +837,27 @@ struct iwl_scan_offload_profiles_query {
struct iwl_scan_offload_profile_match matches[IWL_SCAN_MAX_PROFILES];
} __packed; /* SCAN_OFFLOAD_PROFILES_QUERY_RSP_S_VER_2 */
/**
* struct iwl_umac_scan_iter_complete_notif - notifies end of scanning iteration
* @uid: scan id, &enum iwl_umac_scan_uid_offsets
* @scanned_channels: number of channels scanned and number of valid elements in
* results array
* @status: one of SCAN_COMP_STATUS_*
* @bt_status: BT on/off status
* @last_channel: last channel that was scanned
* @tsf_low: TSF timer (lower half) in usecs
* @tsf_high: TSF timer (higher half) in usecs
* @results: array of scan results, only "scanned_channels" of them are valid
*/
struct iwl_umac_scan_iter_complete_notif {
__le32 uid;
u8 scanned_channels;
u8 status;
u8 bt_status;
u8 last_channel;
__le32 tsf_low;
__le32 tsf_high;
struct iwl_scan_results_notif results[];
} __packed; /* SCAN_ITER_COMPLETE_NTF_UMAC_API_S_VER_1 */
#endif

5
drivers/net/wireless/iwlwifi/mvm/fw-api.h
View File

@ -6,7 +6,7 @@
* GPL LICENSE SUMMARY
*
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
* Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
@ -32,7 +32,7 @@
* BSD LICENSE
*
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
* Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -108,6 +108,7 @@ enum {
ANTENNA_COUPLING_NOTIFICATION = 0xa,
/* UMAC scan commands */
SCAN_ITERATION_COMPLETE_UMAC = 0xb5,
SCAN_CFG_CMD = 0xc,
SCAN_REQ_UMAC = 0xd,
SCAN_ABORT_UMAC = 0xe,

3
drivers/net/wireless/iwlwifi/mvm/mvm.h
View File

@ -1150,6 +1150,9 @@ int iwl_mvm_config_scan(struct iwl_mvm *mvm);
int iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm,
struct iwl_rx_cmd_buffer *rxb,
struct iwl_device_cmd *cmd);
int iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm,
struct iwl_rx_cmd_buffer *rxb,
struct iwl_device_cmd *cmd);
/* MVM debugfs */
#ifdef CONFIG_IWLWIFI_DEBUGFS

3
drivers/net/wireless/iwlwifi/mvm/ops.c
View File

@ -245,6 +245,8 @@ static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
false),
RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
true),
RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
iwl_mvm_rx_umac_scan_iter_complete_notif, false),
RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false),
@ -356,6 +358,7 @@ static const char *const iwl_mvm_cmd_strings[REPLY_MAX] = {
CMD(TDLS_CHANNEL_SWITCH_NOTIFICATION),
CMD(TDLS_CONFIG_CMD),
CMD(MCC_UPDATE_CMD),
CMD(SCAN_ITERATION_COMPLETE_UMAC),
};
#undef CMD

21
drivers/net/wireless/iwlwifi/mvm/scan.c
View File

@ -1181,6 +1181,10 @@ static u32 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm,
if (iwl_mvm_scan_total_iterations(params) > 1)
flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC;
#ifdef CONFIG_IWLWIFI_DEBUGFS
if (mvm->scan_iter_notif_enabled)
flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
#endif
return flags;
}
@ -1522,6 +1526,23 @@ int iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm,
return 0;
}
int iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm,
struct iwl_rx_cmd_buffer *rxb,
struct iwl_device_cmd *cmd)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data;
u8 buf[256];
IWL_DEBUG_SCAN(mvm,
"UMAC Scan iteration complete: status=0x%x scanned_channels=%d channels list: %s\n",
notif->status, notif->scanned_channels,
iwl_mvm_dump_channel_list(notif->results,
notif->scanned_channels, buf,
sizeof(buf)));
return 0;
}
static bool iwl_scan_umac_done_check(struct iwl_notif_wait_data *notif_wait,
struct iwl_rx_packet *pkt, void *data)
{