void DNAT_add_rule_internal
(
DNAT_PARM_PTR dparm_ptr /* [IN] */
)
{ /* Body */
NAT_CFG_STRUCT_PTR nat_cfg_ptr = RTCS_getcfg(NAT);
DNAT_ELEMENT_STRUCT_PTR new_element_ptr, prev_element_ptr, next_element_ptr;
if (nat_cfg_ptr == NULL) {
RTCSCMD_complete(dparm_ptr, RTCSERR_NAT_NOT_INITIALIZED);
return;
}
if (! NAT_is_private_addr(&nat_cfg_ptr->PRIVATE_NETWORKS,dparm_ptr->RULE.PRIVATE_IP)) {
RTCSCMD_complete(dparm_ptr, RTCSERR_NAT_INVALID_PRIVATE_ADDRESS);
return;
}
if (IP_is_local(NULL, dparm_ptr->RULE.PRIVATE_IP)) {
RTCSCMD_complete(dparm_ptr, RTCSERR_NAT_INVALID_PRIVATE_ADDRESS);
return;
}
prev_element_ptr = NULL;
next_element_ptr = (DNAT_ELEMENT_STRUCT_PTR) _queue_head(&nat_cfg_ptr->RULE_QUEUE);
while ((next_element_ptr != NULL) &&
(next_element_ptr->RULE.PRIORITY > dparm_ptr->RULE.PRIORITY)) {
prev_element_ptr = next_element_ptr;
next_element_ptr = (DNAT_ELEMENT_STRUCT_PTR)
_queue_next(&nat_cfg_ptr->RULE_QUEUE, &prev_element_ptr->ELEMENT);
}
if (next_element_ptr != NULL) {
if (next_element_ptr->RULE.PRIORITY == dparm_ptr->RULE.PRIORITY) {
// A rule of the given priority exist
RTCSCMD_complete(dparm_ptr, RTCSERR_NAT_DUPLICATE_PRIORITY);
return;
}
}
new_element_ptr = (DNAT_ELEMENT_STRUCT_PTR)_mem_alloc_system_zero(sizeof(DNAT_ELEMENT_STRUCT));
if (new_element_ptr == NULL) {
RTCSCMD_complete(dparm_ptr, RTCSERR_OUT_OF_MEMORY);
return;
} /* Endif */
new_element_ptr->RULE = dparm_ptr->RULE;
_queue_insert(&nat_cfg_ptr->RULE_QUEUE, &prev_element_ptr->ELEMENT, &new_element_ptr->ELEMENT);
RTCSCMD_complete(dparm_ptr, RTCS_OK);
}/* Endbody */
/**
* Add to the head of the queue
*/
int queue_prepend (queue_t *queue, void *data) {
kprintf ("queue_add_head\n");
return _queue_insert (queue, data, NULL);
}
/**
* Add to the tail of the queue
*/
int queue_append (queue_t *queue, void *data) {
kprintf ("queue_add\n");
return _queue_insert (queue, data, queue->tail);
}
