Commit e699bdea authored by Ilan Peer's avatar Ilan Peer Committed by Luca Coelho
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iwlwifi: mvm: Use all Rx chains for roaming scan 



To improve chances of hearing beacons and probe responses during
a scan which (based on the scan request parameters) looks like a
roaming scan, enable reception on all chains.

Signed-off-by: default avatarIlan Peer <ilan.peer@intel.com>
Signed-off-by: default avatarLuca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211024165252.f115ad455aca.I5de854fe8ce58c85c21a7adf43526acb29156a08@changeid


Signed-off-by: default avatarLuca Coelho <luciano.coelho@intel.com>
parent 2270bb68

drivers/net/wireless/intel/iwlwifi/mvm/scan.c

+8 −0
Original line number Diff line number Diff line
@@ -1995,8 +1995,16 @@ static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm, 
{

	u16 flags = 0;



	/*

	 * If no direct SSIDs are provided perform a passive scan. Otherwise,

	 * if there is a single SSID which is not the broadcast SSID, assume

	 * that the scan is intended for roaming purposes and thus enable Rx on

	 * all chains to improve chances of hearing the beacons/probe responses.

	 */

	if (params->n_ssids == 0)

		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE;

	else if (params->n_ssids == 1 && params->ssids[0].ssid_len)

		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_USE_ALL_RX_CHAINS;



	if (iwl_mvm_is_scan_fragmented(params->type))

		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1;