75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
#include "capwap.h"
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#include "capwap_element.h"
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/********************************************************************
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0
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0 1 2 3 4 5 6 7
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+-+-+-+-+-+-+-+-+
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| ECN Support |
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+-+-+-+-+-+-+-+-+
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Type: 53 for ECN Support
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Length: 1
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********************************************************************/
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/* */
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static void capwap_ecnsupport_element_create(void* data, capwap_message_elements_handle handle, struct capwap_write_message_elements_ops* func) {
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struct capwap_ecnsupport_element* element = (struct capwap_ecnsupport_element*)data;
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ASSERT(data != NULL);
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ASSERT((element->flag == CAPWAP_LIMITED_ECN_SUPPORT) || (element->flag == CAPWAP_FULL_ECN_SUPPORT));
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/* */
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func->write_u8(handle, element->flag);
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}
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/* */
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static void* capwap_ecnsupport_element_clone(void* data) {
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ASSERT(data != NULL);
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return capwap_clone(data, sizeof(struct capwap_ecnsupport_element));
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}
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/* */
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static void capwap_ecnsupport_element_free(void* data) {
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ASSERT(data != NULL);
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capwap_free(data);
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}
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/* */
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static void* capwap_ecnsupport_element_parsing(capwap_message_elements_handle handle, struct capwap_read_message_elements_ops* func) {
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struct capwap_ecnsupport_element* data;
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ASSERT(handle != NULL);
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ASSERT(func != NULL);
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if (func->read_ready(handle) != 1) {
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capwap_logging_debug("Invalid ECN Support element: underbuffer");
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return NULL;
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}
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/* Retrieve data */
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data = (struct capwap_ecnsupport_element*)capwap_alloc(sizeof(struct capwap_ecnsupport_element));
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func->read_u8(handle, &data->flag);
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if ((data->flag != CAPWAP_LIMITED_ECN_SUPPORT) && (data->flag != CAPWAP_FULL_ECN_SUPPORT)) {
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capwap_ecnsupport_element_free((void*)data);
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capwap_logging_debug("Invalid ECN Support element: invalid flag");
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return NULL;
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}
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return data;
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}
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/* */
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struct capwap_message_elements_ops capwap_element_ecnsupport_ops = {
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.create_message_element = capwap_ecnsupport_element_create,
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.parsing_message_element = capwap_ecnsupport_element_parsing,
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.clone_message_element = capwap_ecnsupport_element_clone,
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.free_message_element = capwap_ecnsupport_element_free
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};
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