diff options
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/scan.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c index fe7cb33d5593..175615755d9d 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c @@ -45,6 +45,9 @@ /* minimal number of 2GHz and 5GHz channels in the regular scan request */ #define IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS 4 +/* Number of iterations on the channel for mei filtered scan */ +#define IWL_MEI_SCAN_NUM_ITER 5U + struct iwl_mvm_scan_timing_params { u32 suspend_time; u32 max_out_time; @@ -2665,6 +2668,7 @@ static void iwl_mvm_mei_limited_scan(struct iwl_mvm *mvm, struct iwl_mvm_csme_conn_info *info = iwl_mvm_get_csme_conn_info(mvm); struct iwl_mei_conn_info *conn_info; struct ieee80211_channel *chan; + int scan_iters, i; if (!info) { IWL_DEBUG_SCAN(mvm, "mei_limited_scan: no connection info\n"); @@ -2690,8 +2694,16 @@ static void iwl_mvm_mei_limited_scan(struct iwl_mvm *mvm, return; } - params->n_channels = 1; - params->channels[0] = chan; + /* The mei filtered scan must find the AP, otherwise CSME will + * take the NIC ownership. Add several iterations on the channel to + * make the scan more robust. + */ + scan_iters = min(IWL_MEI_SCAN_NUM_ITER, params->n_channels); + params->n_channels = scan_iters; + for (i = 0; i < scan_iters; i++) + params->channels[i] = chan; + + IWL_DEBUG_SCAN(mvm, "Mei scan: num iterations=%u\n", scan_iters); params->n_ssids = 1; params->ssids[0].ssid_len = conn_info->ssid_len; |