void IP_route_init
(
IP_ROUTE_PTR head /* Pointer to the head of the IPRADIX tree */
)
{ /* Body */
IPRADIX_init(&head->NODE);
head->DIRECT = NULL;
head->INDIRECT = NULL;
head->VIRTUAL = NULL;
} /* Endbody */
static uint_32 NAT_init_internal2
(
NAT_PARM_PTR parm_ptr /* [IN] Initialization parameters */
)
{ /* Body */
NAT_CFG_STRUCT_PTR nat_cfg_ptr = RTCS_getcfg(NAT);
uint_32 error;
/*
** Make sure the netmask is valid. We use the fact that
** (x & x+1) == 0 <=> x = 2^n-1.
*/
if (~parm_ptr->IP_MASK & (~parm_ptr->IP_MASK + 1)) {
return RTCSERR_INVALID_PARAMETER;
} /* Endif */
/* Make sure other parameters have been supplied */
if (!parm_ptr->IP_PRV) {
return RTCSERR_INVALID_PARAMETER;
} /* Endif */
/*
** If the configuration structure has already been allocated,
** just add another private network and return
*/
if (nat_cfg_ptr) {
error = NAT_add_private_network(&nat_cfg_ptr->PRIVATE_NETWORKS, parm_ptr->IP_PRV, parm_ptr->IP_MASK);
if (error == RTCS_OK) {
nat_cfg_ptr->NAT_EXEC = NAT_apply;
}
return error;
} /* Endif */
// First time through the initialization,
// Allocate the NAT configuration structure
nat_cfg_ptr = _mem_alloc_system_zero(sizeof(NAT_CFG_STRUCT));
if (nat_cfg_ptr == NULL) {
return RTCSERR_OUT_OF_MEMORY;
} /* Endif */
/* Record the private network information */
error = NAT_add_private_network(&nat_cfg_ptr->PRIVATE_NETWORKS, parm_ptr->IP_PRV, parm_ptr->IP_MASK);
if (error == RTCS_OK) {
nat_cfg_ptr->NAT_EXEC = NAT_apply;
nat_cfg_ptr->INITIAL_PRV_NET = parm_ptr->IP_PRV;
nat_cfg_ptr->INITIAL_PRV_MASK = parm_ptr->IP_MASK;
nat_cfg_ptr->TCP_TOUT.PRIVATE = &nat_cfg_ptr->TCP_HEAD;
nat_cfg_ptr->UDP_TOUT.PRIVATE = &nat_cfg_ptr->UDP_HEAD;
nat_cfg_ptr->FIN_TOUT.PRIVATE = &nat_cfg_ptr->FIN_HEAD;
nat_cfg_ptr->ICMP_TOUT.PRIVATE = &nat_cfg_ptr->ICMP_HEAD;
/* Initialize radix trees */
IPRADIX_init(&nat_cfg_ptr->ROOT_IN);
IPRADIX_init(&nat_cfg_ptr->ROOT_OUT);
/* Initialize timeout functions */
nat_cfg_ptr->UDP_TOUT.EVENT = NAT_expire;
nat_cfg_ptr->TCP_TOUT.EVENT = NAT_expire;
nat_cfg_ptr->FIN_TOUT.EVENT = NAT_expire;
nat_cfg_ptr->ICMP_TOUT.EVENT = NAT_expire;
nat_cfg_ptr->TIMEOUT_TCP = NAT_DEFAULT_TIMEOUT_TCP;
nat_cfg_ptr->TIMEOUT_UDP = NAT_DEFAULT_TIMEOUT_UDP;
nat_cfg_ptr->TIMEOUT_FIN = NAT_DEFAULT_TIMEOUT_FIN;
nat_cfg_ptr->TIMEOUT_ICMP = NAT_DEFAULT_TIMEOUT_ICMP;
/* Initialize last used port numbers */
nat_cfg_ptr->TCP_PORT = NAT_DEFAULT_PORT_MIN;
nat_cfg_ptr->UDP_PORT = NAT_DEFAULT_PORT_MIN;
nat_cfg_ptr->ICMP_ID = NAT_DEFAULT_PORT_MIN;
nat_cfg_ptr->PORT_MAX = NAT_DEFAULT_PORT_MAX;
nat_cfg_ptr->PORT_MIN = NAT_DEFAULT_PORT_MIN;
/* Inititalize ALGs */
error = NAT_init_algs(nat_cfg_ptr);
}
/* Allocate partitions */
if (error == RTCS_OK) {
nat_cfg_ptr->SESSION_PART = RTCS_part_create(sizeof(NAT_SESSION_STRUCT),
NAT_SESSION_INITIAL_COUNT, NAT_SESSION_GROW_COUNT, NAT_SESSION_MAX,
NULL, NULL);
if (nat_cfg_ptr->SESSION_PART == NULL) {
error = RTCSERR_OUT_OF_MEMORY;
} /* Endif */
} /* Endif */
if (error == RTCS_OK) {
nat_cfg_ptr->RADIX_IN = RTCS_part_create(sizeof(IPRADIX_NODE),
NAT_SESSION_INITIAL_COUNT, NAT_SESSION_GROW_COUNT, NAT_SESSION_MAX,
NULL, NULL);
if (nat_cfg_ptr->RADIX_IN == NULL) {
error = RTCSERR_OUT_OF_MEMORY;
} /* Endif */
} /* Endif */
if (error == RTCS_OK) {
nat_cfg_ptr->RADIX_OUT = RTCS_part_create(sizeof(IPRADIX_NODE),
NAT_SESSION_INITIAL_COUNT, NAT_SESSION_GROW_COUNT, NAT_SESSION_MAX,
NULL, NULL);
if (nat_cfg_ptr->RADIX_OUT == NULL) {
error = RTCSERR_OUT_OF_MEMORY;
} /* Endif */
} /* Endif */
if (error == RTCS_OK) {
// Initialize queue of DNAT Rules
_queue_init( &nat_cfg_ptr->RULE_QUEUE, 0 );
RTCS_setcfg(NAT, nat_cfg_ptr);
} else {
if (nat_cfg_ptr != NULL) {
if (nat_cfg_ptr->RADIX_IN != NULL) RTCS_part_destroy(nat_cfg_ptr->RADIX_IN);
if (nat_cfg_ptr->RADIX_OUT != NULL) RTCS_part_destroy(nat_cfg_ptr->RADIX_OUT);
if (nat_cfg_ptr->SESSION_PART != NULL) RTCS_part_destroy(nat_cfg_ptr->SESSION_PART);
_mem_free(nat_cfg_ptr);
}
} /* Endif */
return error;
} /* Endbody */
