wifi: iwlwifi: mvm: use BSSID when building probe requests

A long time, ago in commit 818965d3 ("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>
Link: https://lore.kernel.org/r/20230417113648.0be90360cad7.If279c28079a1db34280a824cee7c3f6545fd8b9e@changeidSigned-off-by: Johannes Berg <johannes.berg@intel.com>

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;