brcmsmac: add support for adhoc mode

This adds adhoc mode support to brcmsmac.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c

@@ -357,11 +357,12 @@ brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 {
 	struct brcms_info *wl = hw->priv;
 
-	/* Just STA and AP for now */
+	/* Just STA, AP and ADHOC for now */
 	if (vif->type != NL80211_IFTYPE_STATION &&
-	    vif->type != NL80211_IFTYPE_AP) {
+	    vif->type != NL80211_IFTYPE_AP &&
+	    vif->type != NL80211_IFTYPE_ADHOC) {
 		brcms_err(wl->wlc->hw->d11core,
-			  "%s: Attempt to add type %d, only STA and AP for now\n",
+			  "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n",
 			  __func__, vif->type);
 		return -EOPNOTSUPP;
 	}
@@ -374,6 +375,8 @@ brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 	else if (vif->type == NL80211_IFTYPE_AP)
 		brcms_c_start_ap(wl->wlc, vif->addr, vif->bss_conf.bssid,
 				 vif->bss_conf.ssid, vif->bss_conf.ssid_len);
+	else if (vif->type == NL80211_IFTYPE_ADHOC)
+		brcms_c_start_adhoc(wl->wlc, vif->addr);
 	spin_unlock_bh(&wl->lock);
 
 	return 0;
@@ -1056,7 +1059,8 @@ static int ieee_hw_init(struct ieee80211_hw *hw)
 	/* channel change time is dependent on chip and band  */
 	hw->channel_change_time = 7 * 1000;
 	hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
-				     BIT(NL80211_IFTYPE_AP);
+				     BIT(NL80211_IFTYPE_AP) |
+				     BIT(NL80211_IFTYPE_ADHOC);
 
 	/*
 	 * deactivate sending probe responses by ucude, because this will

drivers/net/wireless/brcm80211/brcmsmac/main.c

@@ -2186,6 +2186,14 @@ void brcms_c_start_ap(struct brcms_c_info *wlc, u8 *addr, const u8 *bssid,
 	brcms_b_mctrl(wlc->hw, MCTL_AP | MCTL_INFRA, MCTL_AP | MCTL_INFRA);
 }
 
+void brcms_c_start_adhoc(struct brcms_c_info *wlc, u8 *addr)
+{
+	memcpy(wlc->pub->cur_etheraddr, addr, sizeof(wlc->pub->cur_etheraddr));
+	wlc->bsscfg->type = BRCMS_TYPE_ADHOC;
+
+	brcms_b_mctrl(wlc->hw, MCTL_AP | MCTL_INFRA, 0);
+}
+
 /* Initialize GPIOs that are controlled by D11 core */
 static void brcms_c_gpio_init(struct brcms_c_info *wlc)
 {
@@ -3077,6 +3085,9 @@ static bool brcms_c_ps_allowed(struct brcms_c_info *wlc)
 	if (wlc->bsscfg->type == BRCMS_TYPE_AP)
 		return false;
 
+	if (wlc->bsscfg->type == BRCMS_TYPE_ADHOC)
+		return false;
+
 	return true;
 }
 

drivers/net/wireless/brcm80211/brcmsmac/pub.h

@@ -334,6 +334,7 @@ extern bool brcms_c_tx_flush_completed(struct brcms_c_info *wlc);
 extern void brcms_c_start_station(struct brcms_c_info *wlc, u8 *addr);
 extern void brcms_c_start_ap(struct brcms_c_info *wlc, u8 *addr,
 			     const u8 *bssid, u8 *ssid, size_t ssid_len);
+extern void brcms_c_start_adhoc(struct brcms_c_info *wlc, u8 *addr);
 extern void brcms_c_update_beacon(struct brcms_c_info *wlc);
 extern void brcms_c_set_new_beacon(struct brcms_c_info *wlc,
 				   struct sk_buff *beacon, u16 tim_offset,