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authorIlan Peer <ilan.peer@intel.com>2021-10-24 16:55:01 +0300
committerLuca Coelho <luciano.coelho@intel.com>2021-10-28 12:04:09 +0300
commite699bdea24104cb1add30ae019347d2a5ebe1f63 (patch)
tree9e7d304713b64894297fb97f1b0b5ec3544182e8 /drivers/net/wireless/intel/iwlwifi/mvm/scan.c
parent2270bb685c913ac076aff835ff8ba53ee36ae70d (diff)
downloadlinux-e699bdea24104cb1add30ae019347d2a5ebe1f63.tar.xz
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: 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>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/scan.c')
-rw-r--r--drivers/net/wireless/intel/iwlwifi/mvm/scan.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
index ce8bdbc70b7e..a138b5c4cce8 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
@@ -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;