brcmfmac: add scheduled scan support for specified BSSIDs

Add support to handle scheduled scan request containing BSSID in
the matchsets. The firmware can send event upon finding BSSIDs and
SSIDs. To get these in one event the bit REPORT_SEPARATELY needed
to be removed from the flags in brcmf_pno_config().
Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h

@@ -805,6 +805,17 @@ struct brcmf_pno_macaddr_le {
 	u8 mac[ETH_ALEN];
 };
 
+/**
+ * struct brcmf_pno_bssid_le - bssid configuration for PNO scan.
+ *
+ * @bssid: BSS network identifier.
+ * @flags: flags for this BSSID.
+ */
+struct brcmf_pno_bssid_le {
+	u8 bssid[ETH_ALEN];
+	__le16 flags;
+};
+
 /**
  * struct brcmf_pktcnt_le - packet counters.
  *

drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c

@@ -119,7 +119,6 @@ static int brcmf_pno_config(struct brcmf_if *ifp, u32 scan_freq,
 
 	/* set extra pno params */
 	flags = BIT(BRCMF_PNO_IMMEDIATE_SCAN_BIT) |
-		BIT(BRCMF_PNO_REPORT_SEPARATELY_BIT) |
 		BIT(BRCMF_PNO_ENABLE_ADAPTSCAN_BIT);
 	pfn_param.repeat = BRCMF_PNO_REPEAT;
 	pfn_param.exp = BRCMF_PNO_FREQ_EXPO_MAX;
@@ -204,6 +203,7 @@ static int brcmf_pno_add_ssid(struct brcmf_if *ifp, struct cfg80211_ssid *ssid,
 			      bool active)
 {
 	struct brcmf_pno_net_param_le pfn;
+	int err;
 
 	pfn.auth = cpu_to_le32(WLAN_AUTH_OPEN);
 	pfn.wpa_auth = cpu_to_le32(BRCMF_PNO_WPA_AUTH_ANY);
@@ -214,7 +214,28 @@ static int brcmf_pno_add_ssid(struct brcmf_if *ifp, struct cfg80211_ssid *ssid,
 		pfn.flags = cpu_to_le32(1 << BRCMF_PNO_HIDDEN_BIT);
 	pfn.ssid.SSID_len = cpu_to_le32(ssid->ssid_len);
 	memcpy(pfn.ssid.SSID, ssid->ssid, ssid->ssid_len);
-	return brcmf_fil_iovar_data_set(ifp, "pfn_add", &pfn, sizeof(pfn));
+
+	brcmf_dbg(SCAN, "adding ssid=%.32s (active=%d)\n", ssid->ssid, active);
+	err = brcmf_fil_iovar_data_set(ifp, "pfn_add", &pfn, sizeof(pfn));
+	if (err < 0)
+		brcmf_err("adding failed: err=%d\n", err);
+	return err;
+}
+
+static int brcmf_pno_add_bssid(struct brcmf_if *ifp, const u8 *bssid)
+{
+	struct brcmf_pno_bssid_le bssid_cfg;
+	int err;
+
+	memcpy(bssid_cfg.bssid, bssid, ETH_ALEN);
+	bssid_cfg.flags = 0;
+
+	brcmf_dbg(SCAN, "adding bssid=%pM\n", bssid);
+	err = brcmf_fil_iovar_data_set(ifp, "pfn_add_bssid", &bssid_cfg,
+				       sizeof(bssid_cfg));
+	if (err < 0)
+		brcmf_err("adding failed: err=%d\n", err);
+	return err;
 }
 
 static bool brcmf_is_ssid_active(struct cfg80211_ssid *ssid,
@@ -341,29 +362,29 @@ static int brcmf_pno_prep_fwconfig(struct brcmf_pno_info *pi,
 	return err;
 }
 
-static int brcmf_pno_config_ssids(struct brcmf_if *ifp,
+static int brcmf_pno_config_networks(struct brcmf_if *ifp,
 				     struct brcmf_pno_info *pi)
 {
 	struct cfg80211_sched_scan_request *r;
 	struct cfg80211_match_set *ms;
 	bool active;
-	int i, j, err;
+	int i, j, err = 0;
 
 	for (i = 0; i < pi->n_reqs; i++) {
 		r = pi->reqs[i];
 
 		for (j = 0; j < r->n_match_sets; j++) {
 			ms = &r->match_sets[j];
-			if (!ms->ssid.ssid_len)
-				continue;
+			if (ms->ssid.ssid_len) {
 				active = brcmf_is_ssid_active(&ms->ssid, r);
-			brcmf_dbg(SCAN, "adding %.32s (active=%d)\n",
-				  ms->ssid.ssid, active);
-			err = brcmf_pno_add_ssid(ifp, &ms->ssid, active);
-			if (err < 0) {
-				brcmf_err("adding failed: err=%d\n", err);
-				return err;
+				err = brcmf_pno_add_ssid(ifp, &ms->ssid,
+							 active);
 			}
+			if (!err && is_valid_ether_addr(ms->bssid))
+				err = brcmf_pno_add_bssid(ifp, ms->bssid);
+
+			if (err < 0)
+				return err;
 		}
 	}
 	return 0;
@@ -427,7 +448,7 @@ static int brcmf_pno_config_sched_scans(struct brcmf_if *ifp)
 	if (err < 0)
 		goto clean;
 
-	err = brcmf_pno_config_ssids(ifp, pi);
+	err = brcmf_pno_config_networks(ifp, pi);
 	if (err < 0)
 		goto clean;
 
@@ -554,7 +575,12 @@ u32 brcmf_pno_get_bucket_map(struct brcmf_pno_info *pi,
 		for (j = 0; j < req->n_match_sets; j++) {
 			ms = &req->match_sets[j];
 			if (ms->ssid.ssid_len == ni->SSID_len &&
-			    !strncmp(ms->ssid.ssid, ni->SSID, ni->SSID_len)) {
+			    !memcmp(ms->ssid.ssid, ni->SSID, ni->SSID_len)) {
+				bucket_map |= BIT(i);
+				break;
+			}
+			if (is_valid_ether_addr(ms->bssid) &&
+			    !memcmp(ms->bssid, ni->bssid, ETH_ALEN)) {
 				bucket_map |= BIT(i);
 				break;
 			}