xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

wcn36xx: Implement firmware assisted scan

Browse Source 
Using the software based channel scan mechanism from mac80211 keeps us
offline for 10-15 second, we should instead issue a start_scan/end_scan
on each channel reducing this time.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Bjorn Andersson
2017-01-11 16:32:19 +02:00
committed by Kalle Valo
parent f303a93110
commit 886039036c
5 changed files with 81 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

64
drivers/net/wireless/ath/wcn36xx/main.c
View File

@@ -568,23 +568,59 @@ out:
return ret;
}
static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *mac_addr)
static void wcn36xx_hw_scan_worker(struct work_struct *work)
{
struct wcn36xx *wcn = hw->priv;
struct wcn36xx *wcn = container_of(work, struct wcn36xx, scan_work);
struct cfg80211_scan_request *req = wcn->scan_req;
u8 channels[WCN36XX_HAL_PNO_MAX_NETW_CHANNELS_EX];
struct cfg80211_scan_info scan_info = {};
int i;
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 scan %d channels worker\n", req->n_channels);
for (i = 0; i < req->n_channels; i++)
channels[i] = req->channels[i]->hw_value;
wcn36xx_smd_update_scan_params(wcn, channels, req->n_channels);
wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN);
wcn36xx_smd_start_scan(wcn);
for (i = 0; i < req->n_channels; i++) {
wcn->scan_freq = req->channels[i]->center_freq;
wcn->scan_band = req->channels[i]->band;
wcn36xx_smd_start_scan(wcn, req->channels[i]->hw_value);
msleep(30);
wcn36xx_smd_end_scan(wcn, req->channels[i]->hw_value);
wcn->scan_freq = 0;
}
wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN);
scan_info.aborted = false;
ieee80211_scan_completed(wcn->hw, &scan_info);
mutex_lock(&wcn->scan_lock);
wcn->scan_req = NULL;
mutex_unlock(&wcn->scan_lock);
}
static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
static int wcn36xx_hw_scan(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_scan_request *hw_req)
{
struct wcn36xx *wcn = hw->priv;
wcn36xx_smd_end_scan(wcn);
wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN);
mutex_lock(&wcn->scan_lock);
if (wcn->scan_req) {
mutex_unlock(&wcn->scan_lock);
return -EBUSY;
}
wcn->scan_req = &hw_req->req;
mutex_unlock(&wcn->scan_lock);
schedule_work(&wcn->scan_work);
return 0;
}
static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
@@ -997,8 +1033,7 @@ static const struct ieee80211_ops wcn36xx_ops = {
.configure_filter = wcn36xx_configure_filter,
.tx = wcn36xx_tx,
.set_key = wcn36xx_set_key,
.sw_scan_start = wcn36xx_sw_scan_start,
.sw_scan_complete = wcn36xx_sw_scan_complete,
.hw_scan = wcn36xx_hw_scan,
.bss_info_changed = wcn36xx_bss_info_changed,
.set_rts_threshold = wcn36xx_set_rts_threshold,
.sta_add = wcn36xx_sta_add,
@@ -1023,6 +1058,7 @@ static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
ieee80211_hw_set(wcn->hw, SUPPORTS_PS);
ieee80211_hw_set(wcn->hw, SIGNAL_DBM);
ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL);
ieee80211_hw_set(wcn->hw, SINGLE_SCAN_ON_ALL_BANDS);
wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_AP) |
@@ -1032,6 +1068,9 @@ static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
wcn->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wcn_band_2ghz;
wcn->hw->wiphy->bands[NL80211_BAND_5GHZ] = &wcn_band_5ghz;
wcn->hw->wiphy->max_scan_ssids = WCN36XX_MAX_SCAN_SSIDS;
wcn->hw->wiphy->max_scan_ie_len = WCN36XX_MAX_SCAN_IE_LEN;
wcn->hw->wiphy->cipher_suites = cipher_suites;
wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
@@ -1152,6 +1191,9 @@ static int wcn36xx_probe(struct platform_device *pdev)
wcn->hw = hw;
wcn->dev = &pdev->dev;
mutex_init(&wcn->hal_mutex);
mutex_init(&wcn->scan_lock);
INIT_WORK(&wcn->scan_work, wcn36xx_hw_scan_worker);
wcn->smd_channel = qcom_wcnss_open_channel(wcnss, "WLAN_CTRL", wcn36xx_smd_rsp_process);
if (IS_ERR(wcn->smd_channel)) {