77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
#include "capwap.h"
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#include "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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| Padding...
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+-+-+-+-+-+-+-+-
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Type: 52 for MTU Discovery Padding
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Length: variable
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********************************************************************/
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/* */
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static void capwap_mtudiscovery_element_create(void* data, capwap_message_elements_handle handle, struct capwap_write_message_elements_ops* func) {
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uint16_t length;
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struct capwap_mtudiscovery_element* element = (struct capwap_mtudiscovery_element*)data;
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ASSERT(data != NULL);
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/* */
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length = element->length;
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while (length > 0) {
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func->write_u8(handle, 0xff);
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length--;
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}
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}
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/* */
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static void* capwap_mtudiscovery_element_parsing(capwap_message_elements_handle handle, struct capwap_read_message_elements_ops* func) {
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uint16_t length;
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struct capwap_mtudiscovery_element* data;
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ASSERT(handle != NULL);
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ASSERT(func != NULL);
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length = func->read_ready(handle);
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if (length > 0) {
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log_printf(LOG_DEBUG, "Invalid MTU Discovery Padding 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_mtudiscovery_element*)capwap_alloc(sizeof(struct capwap_mtudiscovery_element));
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data->length = length;
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func->read_block(handle, NULL, length);
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return data;
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}
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/* */
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static void* capwap_mtudiscovery_element_clone(void* data) {
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ASSERT(data != NULL);
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return capwap_clone(data, sizeof(struct capwap_mtudiscovery_element));
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}
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/* */
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static void capwap_mtudiscovery_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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const struct capwap_message_elements_ops capwap_element_mtudiscovery_ops = {
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.category = CAPWAP_MESSAGE_ELEMENT_SINGLE,
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.create = capwap_mtudiscovery_element_create,
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.parse = capwap_mtudiscovery_element_parsing,
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.clone = capwap_mtudiscovery_element_clone,
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.free = capwap_mtudiscovery_element_free
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};
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