/**
*Remove a route from the kernel
*
*@param destination the route to remove
*
*@return negative on error
*/
int
olsr_ioctl_del_route6(const struct rt_entry *rt)
{
struct in6_rtmsg kernel_route;
int rslt;
OLSR_PRINTF(2, "KERN: Deleting %s\n", olsr_rt_to_string(rt));
memset(&kernel_route, 0, sizeof(struct in6_rtmsg));
kernel_route.rtmsg_dst = rt->rt_dst.prefix.v6;
kernel_route.rtmsg_dst_len = rt->rt_dst.prefix_len;
kernel_route.rtmsg_gateway = rt->rt_best->rtp_nexthop.gateway.v6;
kernel_route.rtmsg_flags = olsr_rt_flags(rt);
kernel_route.rtmsg_metric = olsr_fib_metric(&rt->rt_best->rtp_metric);
if ((rslt = ioctl(olsr_cnf->ioctl_s, SIOCDELRT, &kernel_route) >= 0)) {
/*
* Send IPC route update message
*/
ipc_route_send_rtentry(&rt->rt_dst.prefix, NULL, 0, 0, NULL);
}
return rslt;
}
/**
*Insert a route in the kernel routing table
*
*@param destination the route to add
*
*@return negative on error
*/
int
olsr_ioctl_add_route6(const struct rt_entry *rt)
{
struct in6_rtmsg kernel_route;
int rslt;
OLSR_PRINTF(2, "KERN: Adding %s\n", olsr_rtp_to_string(rt->rt_best));
memset(&kernel_route, 0, sizeof(struct in6_rtmsg));
kernel_route.rtmsg_dst = rt->rt_dst.prefix.v6;
kernel_route.rtmsg_dst_len = rt->rt_dst.prefix_len;
kernel_route.rtmsg_gateway = rt->rt_best->rtp_nexthop.gateway.v6;
kernel_route.rtmsg_flags = olsr_rt_flags(rt);
kernel_route.rtmsg_metric = olsr_fib_metric(&rt->rt_best->rtp_metric);
/*
* set interface
*/
kernel_route.rtmsg_ifindex = rt->rt_best->rtp_nexthop.iif_index;
/* XXX delete 0/0 route before ? */
if ((rslt = ioctl(olsr_cnf->ioctl_s, SIOCADDRT, &kernel_route)) >= 0) {
/*
* Send IPC route update message
*/
ipc_route_send_rtentry(&rt->rt_dst.prefix, &rt->rt_best->rtp_nexthop.gateway, rt->rt_best->rtp_metric.hops, 1,
if_ifwithindex_name(rt->rt_best->rtp_nexthop.iif_index));
}
return rslt;
}
/**
* Insert a route in the kernel routing table
*
* @param destination the route to add
*
* @return negative on error
*/
int
olsr_ioctl_add_route(const struct rt_entry *rt)
{
char if_name[IFNAMSIZ];
struct rtentry kernel_route;
union olsr_ip_addr mask;
int rslt;
OLSR_PRINTF(2, "KERN: Adding %s\n", olsr_rtp_to_string(rt->rt_best));
memset(&kernel_route, 0, sizeof(struct rtentry));
((struct sockaddr_in *)&kernel_route.rt_dst)->sin_family = AF_INET;
((struct sockaddr_in *)&kernel_route.rt_gateway)->sin_family = AF_INET;
((struct sockaddr_in *)&kernel_route.rt_genmask)->sin_family = AF_INET;
((struct sockaddr_in *)&kernel_route.rt_dst)->sin_addr = rt->rt_dst.prefix.v4;
if (!olsr_prefix_to_netmask(&mask, rt->rt_dst.prefix_len)) {
return -1;
}
((struct sockaddr_in *)&kernel_route.rt_genmask)->sin_addr = mask.v4;
if (rt->rt_dst.prefix.v4.s_addr != rt->rt_best->rtp_nexthop.gateway.v4.s_addr) {
((struct sockaddr_in *)&kernel_route.rt_gateway)->sin_addr = rt->rt_best->rtp_nexthop.gateway.v4;
}
kernel_route.rt_flags = olsr_rt_flags(rt);
kernel_route.rt_metric = olsr_fib_metric(&rt->rt_best->rtp_metric);
/*
* Set interface
*/
strcpy(if_name, if_ifwithindex_name(rt->rt_best->rtp_nexthop.iif_index));
kernel_route.rt_dev = if_name;
/* delete existing default route before ? */
if ((olsr_cnf->del_gws) && (rt->rt_dst.prefix.v4.s_addr == INADDR_ANY) && (rt->rt_dst.prefix_len == INADDR_ANY)) {
delete_all_inet_gws();
olsr_cnf->del_gws = false;
}
if ((rslt = ioctl(olsr_cnf->ioctl_s, SIOCADDRT, &kernel_route)) >= 0) {
/*
* Send IPC route update message
*/
ipc_route_send_rtentry(&rt->rt_dst.prefix, &rt->rt_best->rtp_nexthop.gateway, rt->rt_best->rtp_metric.hops, 1,
if_ifwithindex_name(rt->rt_best->rtp_nexthop.iif_index));
}
return rslt;
}
/*
* Remove a route from the kernel
* @param destination the route to remove
* @return negative on error
*/
int
os_route_del_rtentry(const struct rt_entry *rt, int ip_version)
{
MIB_IPFORWARDROW Row;
union olsr_ip_addr mask;
unsigned long Res;
struct interface *iface = rt->rt_nexthop.interface;
if (AF_INET != ip_version) {
/*
* Not implemented
*/
return -1;
}
OLSR_DEBUG(LOG_NETWORKING, "KERN: Deleting %s\n", olsr_rt_to_string(rt));
memset(&Row, 0, sizeof(Row));
Row.dwForwardDest = rt->rt_dst.prefix.v4.s_addr;
if (!olsr_prefix_to_netmask(&mask, rt->rt_dst.prefix_len)) {
return -1;
}
Row.dwForwardMask = mask.v4.s_addr;
Row.dwForwardPolicy = 0;
Row.dwForwardNextHop = rt->rt_nexthop.gateway.v4.s_addr;
Row.dwForwardIfIndex = iface->if_index;
// MIB_IPROUTE_TYPE_DIRECT and MIB_IPROUTE_TYPE_INDIRECT
Row.dwForwardType = (rt->rt_dst.prefix.v4.s_addr == rt->rt_nexthop.gateway.v4.s_addr) ? 3 : 4;
Row.dwForwardProto = 3; // MIB_IPPROTO_NETMGMT
Row.dwForwardAge = INFINITE;
Row.dwForwardNextHopAS = 0;
Row.dwForwardMetric1 = olsr_fib_metric(&rt->rt_metric);
Row.dwForwardMetric2 = -1;
Row.dwForwardMetric3 = -1;
Row.dwForwardMetric4 = -1;
Row.dwForwardMetric5 = -1;
Res = DeleteIpForwardEntry(&Row);
if (Res != NO_ERROR) {
OLSR_WARN(LOG_NETWORKING, "DeleteIpForwardEntry() = %08lx, %s", Res, win32_strerror(Res));
// XXX - report error in a different way
errno = Res;
return -1;
}
return 0;
}
/**
*Remove a route from the kernel
*
*@param destination the route to remove
*
*@return negative on error
*/
int
olsr_ioctl_del_route(const struct rt_entry *rt)
{
struct rtentry kernel_route;
union olsr_ip_addr mask;
int rslt;
OLSR_PRINTF(2, "KERN: Deleting %s\n", olsr_rt_to_string(rt));
memset(&kernel_route, 0, sizeof(struct rtentry));
((struct sockaddr_in *)&kernel_route.rt_dst)->sin_family = AF_INET;
((struct sockaddr_in *)&kernel_route.rt_gateway)->sin_family = AF_INET;
((struct sockaddr_in *)&kernel_route.rt_genmask)->sin_family = AF_INET;
((struct sockaddr_in *)&kernel_route.rt_dst)->sin_addr = rt->rt_dst.prefix.v4;
if (rt->rt_dst.prefix.v4.s_addr != rt->rt_nexthop.gateway.v4.s_addr) {
((struct sockaddr_in *)&kernel_route.rt_gateway)->sin_addr = rt->rt_nexthop.gateway.v4;
}
if (!olsr_prefix_to_netmask(&mask, rt->rt_dst.prefix_len)) {
return -1;
} else {
((struct sockaddr_in *)&kernel_route.rt_genmask)->sin_addr = mask.v4;
}
kernel_route.rt_flags = olsr_rt_flags(rt);
kernel_route.rt_metric = olsr_fib_metric(&rt->rt_metric);
/*
* Set interface
*/
kernel_route.rt_dev = NULL;
if ((rslt = ioctl(olsr_cnf->ioctl_s, SIOCDELRT, &kernel_route)) >= 0) {
/*
* Send IPC route update message
*/
ipc_route_send_rtentry(&rt->rt_dst.prefix, NULL, 0, 0, NULL);
}
return rslt;
}
