mac80211: 11h Infrastructure - Parsing

This patch introduces parsing of 11h and 11d related elements from incoming
management frames.

Signed-off-by: Assaf Krauss <assaf.krauss@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

include/linux/ieee80211.h

@@ -469,6 +469,40 @@ struct ieee80211s_hdr {
 	u8 eaddr3[6];
 } __attribute__ ((packed));
 
+/**
+ * struct ieee80211_quiet_ie
+ *
+ * This structure refers to "Quiet information element"
+ */
+struct ieee80211_quiet_ie {
+	u8 count;
+	u8 period;
+	__le16 duration;
+	__le16 offset;
+} __attribute__ ((packed));
+
+/**
+ * struct ieee80211_msrment_ie
+ *
+ * This structure refers to "Measurement Request/Report information element"
+ */
+struct ieee80211_msrment_ie {
+	u8 token;
+	u8 mode;
+	u8 type;
+	u8 request[0];
+} __attribute__ ((packed));
+
+/**
+ * struct ieee80211_channel_sw_ie
+ *
+ * This structure refers to "Channel Switch Announcement information element"
+ */
+struct ieee80211_channel_sw_ie {
+	u8 mode;
+	u8 new_ch_num;
+	u8 count;
+} __attribute__ ((packed));
 
 struct ieee80211_mgmt {
 	__le16 frame_control;
@@ -544,10 +578,15 @@ struct ieee80211_mgmt {
 					u8 action_code;
 					u8 element_id;
 					u8 length;
-					u8 switch_mode;
-					u8 new_chan;
-					u8 switch_count;
+					struct ieee80211_channel_sw_ie sw_elem;
 				} __attribute__((packed)) chan_switch;
+				struct{
+					u8 action_code;
+					u8 dialog_token;
+					u8 element_id;
+					u8 length;
+					struct ieee80211_msrment_ie msr_elem;
+				} __attribute__((packed)) measurement;
 				struct{
 					u8 action_code;
 					u8 dialog_token;
@@ -875,6 +914,15 @@ enum ieee80211_category {
 	WLAN_CATEGORY_WMM = 17,
 };
 
+/* SPECTRUM_MGMT action code */
+enum ieee80211_spectrum_mgmt_actioncode {
+	WLAN_ACTION_SPCT_MSR_REQ = 0,
+	WLAN_ACTION_SPCT_MSR_RPRT = 1,
+	WLAN_ACTION_SPCT_TPC_REQ = 2,
+	WLAN_ACTION_SPCT_TPC_RPRT = 3,
+	WLAN_ACTION_SPCT_CHL_SWITCH = 4,
+};
+
 /* BACK action code */
 enum ieee80211_back_actioncode {
 	WLAN_ACTION_ADDBA_REQ = 0,

net/mac80211/ieee80211_i.h

@@ -791,6 +791,10 @@ struct ieee802_11_elems {
 	u8 *preq;
 	u8 *prep;
 	u8 *perr;
+	u8 *ch_switch_elem;
+	u8 *country_elem;
+	u8 *pwr_constr_elem;
+	u8 *quiet_elem; 	/* first quite element */
 
 	/* length of them, respectively */
 	u8 ssid_len;
@@ -815,6 +819,11 @@ struct ieee802_11_elems {
 	u8 preq_len;
 	u8 prep_len;
 	u8 perr_len;
+	u8 ch_switch_elem_len;
+	u8 country_elem_len;
+	u8 pwr_constr_elem_len;
+	u8 quiet_elem_len;
+	u8 num_of_quiet_elem;	/* can be more the one */
 };
 
 static inline struct ieee80211_local *hw_to_local(

net/mac80211/mlme.c

@@ -204,6 +204,25 @@ void ieee802_11_parse_elems(u8 *start, size_t len,
 			elems->perr = pos;
 			elems->perr_len = elen;
 			break;
+		case WLAN_EID_CHANNEL_SWITCH:
+			elems->ch_switch_elem = pos;
+			elems->ch_switch_elem_len = elen;
+			break;
+		case WLAN_EID_QUIET:
+			if (!elems->quiet_elem) {
+				elems->quiet_elem = pos;
+				elems->quiet_elem_len = elen;
+			}
+			elems->num_of_quiet_elem++;
+			break;
+		case WLAN_EID_COUNTRY:
+			elems->country_elem = pos;
+			elems->country_elem_len = elen;
+			break;
+		case WLAN_EID_PWR_CONSTRAINT:
+			elems->pwr_constr_elem = pos;
+			elems->pwr_constr_elem_len = elen;
+			break;
 		default:
 			break;
 		}