brcmfmac: split up brcmf_pno_config() function

The brcmf_pno_config() function handles two configurations in
firmware. Split it and have caller sort out what is needed.

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/cfg80211.c

@@ -42,6 +42,7 @@
 #include "common.h"
 
 #define BRCMF_SCAN_IE_LEN_MAX		2048
+#define BRCMF_SCHED_SCAN_PERIOD		30
 
 #define WPA_OUI				"\x00\x50\xF2"	/* WPA OUI */
 #define WPA_OUI_TYPE			1
@@ -3396,10 +3397,18 @@ brcmf_cfg80211_sched_scan_start(struct wiphy *wiphy,
 	}
 
 	/* configure pno */
-	ret = brcmf_pno_config(ifp, req);
+	ret = brcmf_pno_config(ifp, BRCMF_SCHED_SCAN_PERIOD, 0, 0);
 	if (ret < 0)
 		return ret;
 
+	/* configure random mac */
+	if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
+		ret = brcmf_pno_set_random(ifp, req->mac_addr,
+					   req->mac_addr_mask);
+		if (ret < 0)
+			return ret;
+	}
+
 	/* configure each match set */
 	for (i = 0; i < req->n_match_sets; i++) {
 

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

@@ -23,10 +23,12 @@
 #include "fwil_types.h"
 
 #define BRCMF_PNO_VERSION		2
-#define BRCMF_PNO_TIME			30
 #define BRCMF_PNO_REPEAT		4
 #define BRCMF_PNO_FREQ_EXPO_MAX		3
+#define BRCMF_PNO_IMMEDIATE_SCAN_BIT	3
+#define BRCMF_PNO_ENABLE_BD_SCAN_BIT	5
 #define BRCMF_PNO_ENABLE_ADAPTSCAN_BIT	6
+#define BRCMF_PNO_REPORT_SEPARATELY_BIT	11
 #define BRCMF_PNO_SCAN_INCOMPLETE	0
 #define BRCMF_PNO_WPA_AUTH_ANY		0xFFFFFFFF
 #define BRCMF_PNO_HIDDEN_BIT		2
@@ -47,42 +49,68 @@ int brcmf_pno_clean(struct brcmf_if *ifp)
 	return ret;
 }
 
-int brcmf_pno_config(struct brcmf_if *ifp,
-		     struct cfg80211_sched_scan_request *request)
+int brcmf_pno_config(struct brcmf_if *ifp, u32 scan_freq,
+		     u32 mscan, u32 bestn)
 {
 	struct brcmf_pno_param_le pfn_param;
-	struct brcmf_pno_macaddr_le pfn_mac;
+	u16 flags;
+	u32 pfnmem;
 	s32 err;
-	u8 *mac_mask;
-	int i;
 
 	memset(&pfn_param, 0, sizeof(pfn_param));
 	pfn_param.version = cpu_to_le32(BRCMF_PNO_VERSION);
 
 	/* set extra pno params */
-	pfn_param.flags = cpu_to_le16(1 << BRCMF_PNO_ENABLE_ADAPTSCAN_BIT);
+	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;
 
 	/* set up pno scan fr */
-	pfn_param.scan_freq = cpu_to_le32(BRCMF_PNO_TIME);
+	pfn_param.scan_freq = cpu_to_le32(scan_freq);
+
+	if (mscan) {
+		pfnmem = bestn;
+
+		/* set bestn in firmware */
+		err = brcmf_fil_iovar_int_set(ifp, "pfnmem", pfnmem);
+		if (err < 0) {
+			brcmf_err("failed to set pfnmem\n");
+			goto exit;
+		}
+		/* get max mscan which the firmware supports */
+		err = brcmf_fil_iovar_int_get(ifp, "pfnmem", &pfnmem);
+		if (err < 0) {
+			brcmf_err("failed to get pfnmem\n");
+			goto exit;
+		}
+		mscan = min_t(u32, mscan, pfnmem);
+		pfn_param.mscan = mscan;
+		pfn_param.bestn = bestn;
+		flags |= BIT(BRCMF_PNO_ENABLE_BD_SCAN_BIT);
+		brcmf_dbg(INFO, "mscan=%d, bestn=%d\n", mscan, bestn);
+	}
 
+	pfn_param.flags = cpu_to_le16(flags);
 	err = brcmf_fil_iovar_data_set(ifp, "pfn_set", &pfn_param,
 				       sizeof(pfn_param));
-	if (err) {
+	if (err)
 		brcmf_err("pfn_set failed, err=%d\n", err);
-		return err;
-	}
 
-	/* Find out if mac randomization should be turned on */
-	if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR))
-		return 0;
+exit:
+	return err;
+}
+
+int brcmf_pno_set_random(struct brcmf_if *ifp, u8 *mac_addr, u8 *mac_mask)
+{
+	struct brcmf_pno_macaddr_le pfn_mac;
+	int err, i;
 
 	pfn_mac.version = BRCMF_PFN_MACADDR_CFG_VER;
 	pfn_mac.flags = BRCMF_PFN_MAC_OUI_ONLY | BRCMF_PFN_SET_MAC_UNASSOC;
 
-	memcpy(pfn_mac.mac, request->mac_addr, ETH_ALEN);
-	mac_mask = request->mac_addr_mask;
+	memcpy(pfn_mac.mac, mac_addr, ETH_ALEN);
 	for (i = 0; i < ETH_ALEN; i++) {
 		pfn_mac.mac[i] &= mac_mask[i];
 		pfn_mac.mac[i] |= get_random_int() & ~(mac_mask[i]);

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

@@ -30,10 +30,21 @@ int brcmf_pno_clean(struct brcmf_if *ifp);
  * brcmf_pno_config - configure pno parameters.
  *
  * @ifp: interface object used.
- * @request: scheduled scan parameters.
+ * @scan_freq: scan frequency period in seconds.
+ * @mscan: maximum number of scans stored in firmware.
+ * @bestn: maximum number of APs per scan stored in firmware.
  */
-int brcmf_pno_config(struct brcmf_if *ifp,
-		     struct cfg80211_sched_scan_request *request);
+int brcmf_pno_config(struct brcmf_if *ifp, u32 scan_freq,
+		     u32 mscan, u32 bestn);
+
+/**
+ * brcmf_pno_set_random - setup randomisation mac address for pno.
+ *
+ * @ifp: interface object used.
+ * @mac_addr: MAC address used with randomisation.
+ * @mac_mask: MAC address mask used for randomisation.
+ */
+int brcmf_pno_set_random(struct brcmf_if *ifp, u8 *mac_addr, u8 *mac_mask);
 
 /**
  * brcmf_pno_add_ssid - add ssid for pno in firmware.