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From:   gregory.greenman@intel.com
To:     johannes@sipsolutions.net
Cc:     linux-wireless@vger.kernel.org,
        Johannes Berg <johannes.berg@intel.com>,
        Gregory Greenman <gregory.greenman@intel.com>
Subject: [PATCH 03/15] wifi: iwlwifi: mvm: use BSSID when building probe requests
Date:   Mon, 17 Apr 2023 11:41:22 +0300
Message-Id: <20230417113648.0be90360cad7.If279c28079a1db34280a824cee7c3f6545fd8b9e@changeid>
In-Reply-To: <20230417084134.1338976-1-gregory.greenman@intel.com>
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From: Johannes Berg <johannes.berg@intel.com>

A long time, ago in commit 818965d39177 ("cfg80211: Allow a
scan request for a specific BSSID"), the stack started passing
the BSSID that should be scanned for. Use it in iwlwifi for the
intended optimisation, and to also allow the use of this for an
implementation sending multi-link probe requests.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
---
 drivers/net/wireless/intel/iwlwifi/mvm/scan.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
index 38b68827a4bd..1e20f9538640 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
@@ -98,6 +98,7 @@ struct iwl_mvm_scan_params {
 	bool scan_6ghz;
 	bool enable_6ghz_passive;
 	bool respect_p2p_go, respect_p2p_go_hb;
+	u8 bssid[ETH_ALEN] __aligned(2);
 };
 
 static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm)
@@ -760,7 +761,7 @@ iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 
 	frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 	eth_broadcast_addr(frame->da);
-	eth_broadcast_addr(frame->bssid);
+	ether_addr_copy(frame->bssid, params->bssid);
 	frame->seq_ctrl = 0;
 
 	pos = frame->u.probe_req.variable;
@@ -2801,6 +2802,7 @@ int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 	params.pass_all = true;
 	params.n_match_sets = 0;
 	params.match_sets = NULL;
+	ether_addr_copy(params.bssid, req->bssid);
 
 	params.scan_plans = &scan_plan;
 	params.n_scan_plans = 1;
@@ -2894,6 +2896,7 @@ int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
 	params.pass_all =  iwl_mvm_scan_pass_all(mvm, req);
 	params.n_match_sets = req->n_match_sets;
 	params.match_sets = req->match_sets;
+	eth_broadcast_addr(params.bssid);
 	if (!req->n_scan_plans)
 		return -EINVAL;
 
-- 
2.38.1