void activate_interface_address(
lispd_iface_elt *iface,
lisp_addr_t new_address)
{
lispd_iface_mappings_list *mapping_list = NULL;
lispd_mapping_elt *mapping = NULL;
lispd_locators_list **not_init_locators_list = NULL;
lispd_locators_list **locators_list = NULL;
lispd_locator_elt *locator = NULL;
switch(new_address.afi) {
case AF_INET:
iface->out_socket_v4 = open_device_binded_raw_socket(iface->iface_name,AF_INET);
bind_socket_src_address(iface->out_socket_v4, &new_address);
break;
case AF_INET6:
iface->out_socket_v6 = open_device_binded_raw_socket(iface->iface_name,AF_INET6);
bind_socket_src_address(iface->out_socket_v6, &new_address);
break;
}
mapping_list = iface->head_mappings_list;
/*
* Activate the locator for each mapping associated with the interface
*/
while (mapping_list != NULL) {
mapping = mapping_list->mapping;
lispd_log_msg(LISP_LOG_DEBUG_2,"Activating locator %s associated to the EID %s/%d\n",
get_char_from_lisp_addr_t(new_address),
get_char_from_lisp_addr_t(mapping->eid_prefix),
mapping->eid_prefix_length);
not_init_locators_list = &(((lcl_mapping_extended_info *)mapping->extended_info)->head_not_init_locators_list);
locator = extract_locator_from_list (not_init_locators_list, new_address);
if (locator != NULL) {
switch(new_address.afi) {
case AF_INET:
mapping_list->use_ipv4_address = TRUE;
locators_list = &mapping->head_v4_locators_list;
break;
case AF_INET6:
mapping_list->use_ipv6_address = TRUE;
locators_list = &mapping->head_v6_locators_list;
break;
}
/* Add the activated locator */
if (add_locator_to_list (locators_list,locator) == GOOD) {
mapping->locator_count = mapping->locator_count + 1;
} else {
free_locator(locator);
}
} else {
lispd_log_msg(LISP_LOG_DEBUG_1,"activate_interface_address: No locator with address %s has been found"
" in the not init locators list of the mapping %s/%d. Is priority equal to -1 for this EID and afi?",
get_char_from_lisp_addr_t(new_address),
get_char_from_lisp_addr_t(mapping->eid_prefix),
mapping->eid_prefix_length);
}
mapping_list = mapping_list->next;
}
}
void process_nl_new_link (struct nlmsghdr *nlh)
{
struct ifinfomsg *ifi = NULL;
lispd_iface_elt *iface = NULL;
int iface_index = 0;
uint8_t status = UP;
char iface_name[IF_NAMESIZE];
uint32_t old_iface_index = 0;
ifi = (struct ifinfomsg *) NLMSG_DATA (nlh);
iface_index = ifi->ifi_index;
iface = get_interface_from_index(iface_index);
if (iface == NULL) {
/*
* In some OS when a virtual interface is removed and added again, the index of the interface change.
* Search lispd_iface_elt by the interface name and update the index.
*/
if (if_indextoname(iface_index, iface_name) != NULL) {
iface = get_interface(iface_name);
}
if (iface == NULL) {
lispd_log_msg(LISP_LOG_DEBUG_2, "process_nl_new_link: the netlink message is not for any interface associated with RLOCs (%s)",
iface_name);
return;
} else {
old_iface_index = iface->iface_index;
iface->iface_index = iface_index;
lispd_log_msg(LISP_LOG_DEBUG_2,"process_nl_new_link: The new index of the interface %s is: %d. Updating tables",
iface_name, iface->iface_index);
/* Update routing tables and reopen sockets*/
if (iface->ipv4_address->afi != AF_UNSPEC) {
del_rule(AF_INET,0,old_iface_index,old_iface_index,RTN_UNICAST,iface->ipv4_address,32,NULL,0,0);
add_rule(AF_INET,0,iface_index,iface_index,RTN_UNICAST,iface->ipv4_address,32,NULL,0,0);
close(iface->out_socket_v4);
iface->out_socket_v4 = open_device_binded_raw_socket(iface->iface_name,AF_INET);
bind_socket_src_address(iface->out_socket_v4,iface->ipv4_address);
}
if (iface->ipv6_address->afi != AF_UNSPEC) {
del_rule(AF_INET6,0,old_iface_index,old_iface_index,RTN_UNICAST,iface->ipv6_address,128,NULL,0,0);
add_rule(AF_INET6,0,iface_index,iface_index,RTN_UNICAST,iface->ipv6_address,128,NULL,0,0);
close(iface->out_socket_v6);
iface->out_socket_v6 = open_device_binded_raw_socket(iface->iface_name,AF_INET6);
bind_socket_src_address(iface->out_socket_v6,iface->ipv6_address);
}
}
}
if ((ifi->ifi_flags & IFF_RUNNING) != 0) {
lispd_log_msg(LISP_LOG_DEBUG_1, "process_nl_new_link: Interface %s changes its status to UP",iface->iface_name);
status = UP;
}
else {
lispd_log_msg(LISP_LOG_DEBUG_1, "process_nl_new_link: Interface %s changes its status to DOWN",iface->iface_name);
status = DOWN;
}
process_link_status_change (iface, status);
}
lispd_iface_elt *add_interface(char *iface_name)
{
lispd_iface_list_elt *iface_list = NULL;
lispd_iface_list_elt *aux_iface_list = NULL;
lispd_iface_elt *iface = NULL;
/* Creating the new interface*/
if ((iface_list = malloc(sizeof(lispd_iface_list_elt)))==NULL){
lispd_log_msg(LISP_LOG_WARNING,"add_interface: Unable to allocate memory for iface_list_elt: %s", strerror(errno));
return(NULL);
}
if ((iface = malloc(sizeof(lispd_iface_elt)))==NULL){
lispd_log_msg(LISP_LOG_WARNING,"add_interface: Unable to allocate memory for iface_elt: %s", strerror(errno));
free(iface_list);
return(NULL);
}
if ((iface->ipv4_address = (lisp_addr_t *)malloc(sizeof(lisp_addr_t)))==NULL){
lispd_log_msg(LISP_LOG_WARNING,"add_interface: Unable to allocate memory for lisp_addr_t: %s", strerror(errno));
free(iface_list);
free(iface);
return(NULL);
}
if ((iface->ipv6_address = (lisp_addr_t *)malloc(sizeof(lisp_addr_t)))==NULL){
lispd_log_msg(LISP_LOG_WARNING,"add_interface: Unable to allocate memory for lisp_addr_t: %s", strerror(errno));
free(iface_list);
free(iface->ipv4_address);
free(iface);
return(NULL);
}
memset(iface->ipv4_address,0,sizeof(lisp_addr_t));
memset(iface->ipv6_address,0,sizeof(lisp_addr_t));
iface->iface_name = malloc(strlen(iface_name) + 1); // XXX Must free elsewhere
strcpy(iface->iface_name, iface_name);
iface->iface_index = if_nametoindex(iface_name);
if (iface->iface_index != 0){
err = lispd_get_iface_address(iface_name, iface->ipv4_address, AF_INET);
if (err == GOOD){
iface->out_socket_v4 = open_device_binded_raw_socket(iface->iface_name,AF_INET);
}else {
iface->ipv4_address->afi = AF_UNSPEC;
iface->out_socket_v4 = -1;
}
err = lispd_get_iface_address(iface_name, iface->ipv6_address, AF_INET6);
if (err == GOOD){
iface->out_socket_v6 = open_device_binded_raw_socket(iface->iface_name,AF_INET6);
}else {
iface->ipv6_address->afi = AF_UNSPEC;
iface->out_socket_v6 = -1;
}
}else{
iface->ipv4_address->afi = AF_UNSPEC;
iface->out_socket_v4 = -1;
iface->ipv6_address->afi = AF_UNSPEC;
iface->out_socket_v6 = -1;
}
if ( iface->ipv4_address->afi == AF_UNSPEC && iface->ipv6_address->afi == AF_UNSPEC){
iface->status = DOWN;
}else{
iface->status = UP;
}
iface->head_mappings_list = NULL;
iface->status_changed = FALSE;
iface->ipv4_changed = FALSE;
iface->ipv6_changed = FALSE;
iface_list->iface = iface;
iface_list->next = NULL;
/* Add iface to the list */
if (!head_interface_list){
head_interface_list = iface_list;
}else {
aux_iface_list = head_interface_list;
while (aux_iface_list->next)
aux_iface_list = aux_iface_list->next;
aux_iface_list->next = iface_list;
}
lispd_log_msg(LISP_LOG_DEBUG_2,"add_interface: Interface %s with interface index %d added to interfaces lists",
iface_name, iface->iface_index);
return (iface);
}