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iwlwifi: mvm: Use all Rx chains for roaming scan

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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: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211024165252.f115ad455aca.I5de854fe8ce58c85c21a7adf43526acb29156a08@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Ilan Peer 2021-10-24 16:55:01 +03:00 committed by Luca Coelho
parent 2270bb685c
commit e699bdea24
1 changed files with 8 additions and 0 deletions
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8
drivers/net/wireless/intel/iwlwifi/mvm/scan.c
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@ -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;