void *ipv6_rem_list_by_ttl(void *args){
struct info *ptr;
struct info *prev;
while(1){
/* lock ipv6 info */
if(pthread_mutex_lock(&mutex_ipv6_info) != 0){
err(EXIT_FAILURE, "pthread: ttl: ipv6_info lock failed");
}
if(ipv6_info.next != NULL){
prev = &ipv6_info;
ptr = &ipv6_info;
while(ptr->next != NULL){
prev = ptr;
ptr = ptr->next;
if(ptr->state == STATE_TTL || ptr->state == STATE_NONCE){
if(ptr->ttl != 0xffffffff && ptr->ttl != 0){
ptr->ttl--;
}
if(ptr->ttl == 0){
/* for syslog */
char log_eid_addr[100];
char log_rloc_addr[100];
inet_ntop(AF_INET6, ptr->address, log_eid_addr, 100);
if(ptr->af == 1){
inet_ntop(AF_INET, ptr->nexthop, log_rloc_addr, 100);
}else if(ptr->af == 2){
inet_ntop(AF_INET6, ptr->nexthop, log_rloc_addr, 100);
}else if(ptr->af == 0){
if(ptr->state == STATE_TTL){
strcpy(log_rloc_addr, "NativelyForward");
}else if(ptr->state == STATE_NONCE){
strcpy(log_rloc_addr, "Drop");
}
}
syslog_write(LOG_INFO, "removed cache by ttl: %s/%d -> %s", log_eid_addr, ptr->prefix, log_rloc_addr);
delete_prefix(2, ptr->address, ptr->prefix);
prev->next = ptr->next;
free(ptr);
ptr = prev;
}
}
}
}
/* unlock ipv6 info */
if(pthread_mutex_unlock(&mutex_ipv6_info) != 0){
err(EXIT_FAILURE, "pthread: ttl: ipv4_info unlock failed");
}
sleep(1);
}
}
int ipv6_rem_list_by_nonce(char *nonce){
struct info *ptr;
struct info *prev;
while(1){
/* lock ipv6 info */
if(pthread_mutex_lock(&mutex_ipv6_info) != 0){
err(EXIT_FAILURE, "pthread: ttl: ipv6_info lock failed");
}
if(ipv6_info.next != NULL){
prev = &ipv6_info;
ptr = &ipv6_info;
while(ptr->next != NULL){
prev = ptr;
ptr = ptr->next;
if(ptr->state == STATE_NONCE){
if(!memcmp(ptr->nonce, nonce, 8)){
/* for syslog */
char log_eid_addr[100];
inet_ntop(AF_INET6, ptr->address, log_eid_addr, 100);
syslog_write(LOG_INFO, "removed temporary cache: %s/%d", log_eid_addr, ptr->prefix);
delete_prefix(2, ptr->address, ptr->prefix);
prev->next = ptr->next;
free(ptr);
ptr = prev;
/* unlock ipv6 info */
if(pthread_mutex_unlock(&mutex_ipv6_info) != 0){
err(EXIT_FAILURE, "pthread: ttl: ipv6_info unlock failed");
}
return 1;
}
}
}
}
/* unlock ipv6 info */
if(pthread_mutex_unlock(&mutex_ipv6_info) != 0){
err(EXIT_FAILURE, "pthread: ttl: ipv6_info unlock failed");
}
return 0;
}
}
bool switch_lpm_trie_delete(switch_lpm_trie_t *trie,
const char *prefix,
int prefix_length) {
node_t *current_node = trie->root;
byte_t byte;
unsigned short prefix_key;
value_t *pdata = NULL;
while (prefix_length >= 8) {
byte = (byte_t)*prefix;
node_t *node = get_next_node(current_node, byte);
if (!node) return NULL;
prefix++;
prefix_length -= 8;
current_node = node;
}
if (prefix_length == 0)
prefix_key = 0;
else
prefix_key = get_prefix_key((unsigned)prefix_length, (byte_t)*prefix);
pdata = get_prefix_ptr(current_node, prefix_key);
if (!pdata) return false;
if (trie->release_memory) {
assert(delete_prefix(current_node, prefix_key) == 1);
current_node->pref_num--;
while (current_node->pref_num == 0 && current_node->branch_num == 0) {
node_t *tmp = current_node;
current_node = current_node->parent;
if (!current_node) break;
assert(delete_branch(current_node, tmp->child_id) == 1);
switch_free(tmp);
current_node->branch_num--;
}
}
trie->num_entries--;
return true;
}
