implement several 80211 element

src/common/capwap_element_80211_ofdmcontrol.c

@@ -0,0 +1,95 @@
+#include "capwap.h"
+#include "capwap_element.h"
+
+/********************************************************************
+
+ 0                   1                   2                   3
+ 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|    Radio ID   |    Reserved   | Current Chan  |  Band Support |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                         TI Threshold                          |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+Type:   1033 for IEEE 802.11 OFDM Control
+
+Length:   8
+
+********************************************************************/
+
+struct capwap_80211_ofdmcontrol_raw_element {
+	unsigned char radioid;
+	unsigned char reserved;
+	unsigned char currentchannel;
+	unsigned char bandsupport;
+	unsigned long tithreshold;
+} __attribute__((__packed__));
+
+/* */
+struct capwap_message_element* capwap_80211_ofdmcontrol_element_create(void* data, unsigned long datalength) {
+	struct capwap_message_element* element;
+	struct capwap_80211_ofdmcontrol_raw_element* dataraw;
+	struct capwap_80211_ofdmcontrol_element* dataelement = (struct capwap_80211_ofdmcontrol_element*)data;
+
+	ASSERT(data != NULL);
+	ASSERT(datalength >= sizeof(struct capwap_80211_ofdmcontrol_element));
+
+	/* Alloc block of memory */
+	element = capwap_alloc(sizeof(struct capwap_message_element) + sizeof(struct capwap_80211_ofdmcontrol_raw_element));
+	if (!element) {
+		capwap_outofmemory();
+	}
+
+	/* Create message element */
+	memset(element, 0, sizeof(struct capwap_message_element) + sizeof(struct capwap_80211_ofdmcontrol_raw_element));
+	element->type = htons(CAPWAP_ELEMENT_80211_OFDMCONTROL);
+	element->length = htons(sizeof(struct capwap_80211_ofdmcontrol_raw_element));
+	dataraw = (struct capwap_80211_ofdmcontrol_raw_element*)element->data;
+
+	dataraw->radioid = dataelement->radioid;
+	dataraw->currentchannel = dataelement->currentchannel;
+	dataraw->bandsupport = dataelement->bandsupport;
+	dataraw->tithreshold = htonl(dataelement->tithreshold);
+	return element;
+}
+
+/* */
+int capwap_80211_ofdmcontrol_element_validate(struct capwap_message_element* element) {
+	/* TODO */
+	return 1;
+}
+
+/* */
+void* capwap_80211_ofdmcontrol_element_parsing(struct capwap_message_element* element) {
+	struct capwap_80211_ofdmcontrol_element* data;
+	struct capwap_80211_ofdmcontrol_raw_element* dataraw;
+
+	ASSERT(element);
+	ASSERT(ntohs(element->type) == CAPWAP_ELEMENT_80211_OFDMCONTROL);
+
+	if (ntohs(element->length) != 8) {
+		return NULL;
+	}
+
+	dataraw = (struct capwap_80211_ofdmcontrol_raw_element*)element->data;
+
+	/* */
+	data = (struct capwap_80211_ofdmcontrol_element*)capwap_alloc(sizeof(struct capwap_80211_ofdmcontrol_element));
+	if (!data) {
+		capwap_outofmemory();
+	}
+
+	/* */
+	data->radioid = dataraw->radioid;
+	data->currentchannel = ntohs(dataraw->currentchannel);
+	data->bandsupport = ntohs(dataraw->bandsupport);
+	data->tithreshold = ntohl(dataraw->tithreshold);
+	return data;
+}
+
+/* */
+void capwap_80211_ofdmcontrol_element_free(void* data) {
+	ASSERT(data != NULL);
+	
+	capwap_free(data);
+}