int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback) { _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL; int r; assert(link); assert(link->manager); assert(link->manager->rtnl); assert(link->ifindex > 0); assert(route->family == AF_INET || route->family == AF_INET6); r = sd_rtnl_message_new_route(link->manager->rtnl, RTM_NEWROUTE, route->family, &req); if (r < 0) { log_error("Could not create RTM_NEWROUTE message: %s", strerror(-r)); return r; } if (route->family == AF_INET) r = sd_rtnl_message_append_in_addr(req, RTA_GATEWAY, &route->in_addr.in); else if (route->family == AF_INET6) r = sd_rtnl_message_append_in6_addr(req, RTA_GATEWAY, &route->in_addr.in6); if (r < 0) { log_error("Could not append RTA_GATEWAY attribute: %s", strerror(-r)); return r; } if (route->dst_prefixlen) { if (route->family == AF_INET) r = sd_rtnl_message_append_in_addr(req, RTA_DST, &route->dst_addr.in); else if (route->family == AF_INET6) r = sd_rtnl_message_append_in6_addr(req, RTA_DST, &route->dst_addr.in6); if (r < 0) { log_error("Could not append RTA_DST attribute: %s", strerror(-r)); return r; } r = sd_rtnl_message_route_set_dst_prefixlen(req, route->dst_prefixlen); if (r < 0) { log_error("Could not set destination prefix length: %s", strerror(-r)); return r; } } r = sd_rtnl_message_append_u32(req, RTA_OIF, link->ifindex); if (r < 0) { log_error("Could not append RTA_OIF attribute: %s", strerror(-r)); return r; } r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL); if (r < 0) { log_error("Could not send rtnetlink message: %s", strerror(-r)); return r; } return 0; }
int route_drop(Route *route, Link *link, sd_netlink_message_handler_t callback) { _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; int r; assert(link); assert(link->manager); assert(link->manager->rtnl); assert(link->ifindex > 0); assert(route->family == AF_INET || route->family == AF_INET6); r = sd_rtnl_message_new_route(link->manager->rtnl, &req, RTM_DELROUTE, route->family, route->protocol); if (r < 0) return log_error_errno(r, "Could not create RTM_DELROUTE message: %m"); if (!in_addr_is_null(route->family, &route->in_addr)) { if (route->family == AF_INET) r = sd_netlink_message_append_in_addr(req, RTA_GATEWAY, &route->in_addr.in); else if (route->family == AF_INET6) r = sd_netlink_message_append_in6_addr(req, RTA_GATEWAY, &route->in_addr.in6); if (r < 0) return log_error_errno(r, "Could not append RTA_GATEWAY attribute: %m"); } if (route->dst_prefixlen) { if (route->family == AF_INET) r = sd_netlink_message_append_in_addr(req, RTA_DST, &route->dst_addr.in); else if (route->family == AF_INET6) r = sd_netlink_message_append_in6_addr(req, RTA_DST, &route->dst_addr.in6); if (r < 0) return log_error_errno(r, "Could not append RTA_DST attribute: %m"); r = sd_rtnl_message_route_set_dst_prefixlen(req, route->dst_prefixlen); if (r < 0) return log_error_errno(r, "Could not set destination prefix length: %m"); } if (route->src_prefixlen) { if (route->family == AF_INET) r = sd_netlink_message_append_in_addr(req, RTA_SRC, &route->src_addr.in); else if (route->family == AF_INET6) r = sd_netlink_message_append_in6_addr(req, RTA_SRC, &route->src_addr.in6); if (r < 0) return log_error_errno(r, "Could not append RTA_DST attribute: %m"); r = sd_rtnl_message_route_set_src_prefixlen(req, route->src_prefixlen); if (r < 0) return log_error_errno(r, "Could not set source prefix length: %m"); } if (!in_addr_is_null(route->family, &route->prefsrc_addr)) { if (route->family == AF_INET) r = sd_netlink_message_append_in_addr(req, RTA_PREFSRC, &route->prefsrc_addr.in); else if (route->family == AF_INET6) r = sd_netlink_message_append_in6_addr(req, RTA_PREFSRC, &route->prefsrc_addr.in6); if (r < 0) return log_error_errno(r, "Could not append RTA_PREFSRC attribute: %m"); } r = sd_rtnl_message_route_set_scope(req, route->scope); if (r < 0) return log_error_errno(r, "Could not set scope: %m"); r = sd_netlink_message_append_u32(req, RTA_PRIORITY, route->metrics); if (r < 0) return log_error_errno(r, "Could not append RTA_PRIORITY attribute: %m"); r = sd_netlink_message_append_u32(req, RTA_OIF, link->ifindex); if (r < 0) return log_error_errno(r, "Could not append RTA_OIF attribute: %m"); r = sd_netlink_call_async(link->manager->rtnl, req, callback, link, 0, NULL); if (r < 0) return log_error_errno(r, "Could not send rtnetlink message: %m"); link_ref(link); return 0; }
int route_configure( Route *route, Link *link, sd_netlink_message_handler_t callback) { _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; _cleanup_(sd_event_source_unrefp) sd_event_source *expire = NULL; usec_t lifetime; int r; assert(link); assert(link->manager); assert(link->manager->rtnl); assert(link->ifindex > 0); assert(route->family == AF_INET || route->family == AF_INET6); if (route_get(link, route->family, &route->dst, route->dst_prefixlen, route->tos, route->priority, route->table, NULL) <= 0 && set_size(link->routes) >= ROUTES_PER_LINK_MAX) return -E2BIG; r = sd_rtnl_message_new_route(link->manager->rtnl, &req, RTM_NEWROUTE, route->family, route->protocol); if (r < 0) return log_error_errno(r, "Could not create RTM_NEWROUTE message: %m"); if (!in_addr_is_null(route->family, &route->gw)) { if (route->family == AF_INET) r = sd_netlink_message_append_in_addr(req, RTA_GATEWAY, &route->gw.in); else if (route->family == AF_INET6) r = sd_netlink_message_append_in6_addr(req, RTA_GATEWAY, &route->gw.in6); if (r < 0) return log_error_errno(r, "Could not append RTA_GATEWAY attribute: %m"); r = sd_rtnl_message_route_set_family(req, route->family); if (r < 0) return log_error_errno(r, "Could not set route family: %m"); } if (route->dst_prefixlen) { if (route->family == AF_INET) r = sd_netlink_message_append_in_addr(req, RTA_DST, &route->dst.in); else if (route->family == AF_INET6) r = sd_netlink_message_append_in6_addr(req, RTA_DST, &route->dst.in6); if (r < 0) return log_error_errno(r, "Could not append RTA_DST attribute: %m"); r = sd_rtnl_message_route_set_dst_prefixlen(req, route->dst_prefixlen); if (r < 0) return log_error_errno(r, "Could not set destination prefix length: %m"); } if (route->src_prefixlen) { if (route->family == AF_INET) r = sd_netlink_message_append_in_addr(req, RTA_SRC, &route->src.in); else if (route->family == AF_INET6) r = sd_netlink_message_append_in6_addr(req, RTA_SRC, &route->src.in6); if (r < 0) return log_error_errno(r, "Could not append RTA_SRC attribute: %m"); r = sd_rtnl_message_route_set_src_prefixlen(req, route->src_prefixlen); if (r < 0) return log_error_errno(r, "Could not set source prefix length: %m"); } if (!in_addr_is_null(route->family, &route->prefsrc)) { if (route->family == AF_INET) r = sd_netlink_message_append_in_addr(req, RTA_PREFSRC, &route->prefsrc.in); else if (route->family == AF_INET6) r = sd_netlink_message_append_in6_addr(req, RTA_PREFSRC, &route->prefsrc.in6); if (r < 0) return log_error_errno(r, "Could not append RTA_PREFSRC attribute: %m"); } r = sd_rtnl_message_route_set_scope(req, route->scope); if (r < 0) return log_error_errno(r, "Could not set scope: %m"); r = sd_rtnl_message_route_set_flags(req, route->flags); if (r < 0) return log_error_errno(r, "Could not set flags: %m"); if (route->table != RT_TABLE_DEFAULT) { if (route->table < 256) { r = sd_rtnl_message_route_set_table(req, route->table); if (r < 0) return log_error_errno(r, "Could not set route table: %m"); } else { r = sd_rtnl_message_route_set_table(req, RT_TABLE_UNSPEC); if (r < 0) return log_error_errno(r, "Could not set route table: %m"); /* Table attribute to allow more than 256. */ r = sd_netlink_message_append_data(req, RTA_TABLE, &route->table, sizeof(route->table)); if (r < 0) return log_error_errno(r, "Could not append RTA_TABLE attribute: %m"); } } r = sd_netlink_message_append_u32(req, RTA_PRIORITY, route->priority); if (r < 0) return log_error_errno(r, "Could not append RTA_PRIORITY attribute: %m"); r = sd_netlink_message_append_u8(req, RTA_PREF, route->pref); if (r < 0) return log_error_errno(r, "Could not append RTA_PREF attribute: %m"); r = sd_netlink_message_append_u32(req, RTA_OIF, link->ifindex); if (r < 0) return log_error_errno(r, "Could not append RTA_OIF attribute: %m"); r = sd_netlink_call_async(link->manager->rtnl, req, callback, link, 0, NULL); if (r < 0) return log_error_errno(r, "Could not send rtnetlink message: %m"); link_ref(link); lifetime = route->lifetime; r = route_add(link, route->family, &route->dst, route->dst_prefixlen, route->tos, route->priority, route->table, &route); if (r < 0) return log_error_errno(r, "Could not add route: %m"); /* TODO: drop expiration handling once it can be pushed into the kernel */ route->lifetime = lifetime; if (route->lifetime != USEC_INFINITY) { r = sd_event_add_time(link->manager->event, &expire, clock_boottime_or_monotonic(), route->lifetime, 0, route_expire_handler, route); if (r < 0) return log_error_errno(r, "Could not arm expiration timer: %m"); } sd_event_source_unref(route->expire); route->expire = expire; expire = NULL; return 0; }
int route_remove(Route *route, Link *link, sd_netlink_message_handler_t callback) { _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; int r; assert(link); assert(link->manager); assert(link->manager->rtnl); assert(link->ifindex > 0); assert(IN_SET(route->family, AF_INET, AF_INET6)); r = sd_rtnl_message_new_route(link->manager->rtnl, &req, RTM_DELROUTE, route->family, route->protocol); if (r < 0) return log_error_errno(r, "Could not create RTM_DELROUTE message: %m"); if (!in_addr_is_null(route->family, &route->gw)) { if (route->family == AF_INET) r = sd_netlink_message_append_in_addr(req, RTA_GATEWAY, &route->gw.in); else if (route->family == AF_INET6) r = sd_netlink_message_append_in6_addr(req, RTA_GATEWAY, &route->gw.in6); if (r < 0) return log_error_errno(r, "Could not append RTA_GATEWAY attribute: %m"); } if (route->dst_prefixlen) { if (route->family == AF_INET) r = sd_netlink_message_append_in_addr(req, RTA_DST, &route->dst.in); else if (route->family == AF_INET6) r = sd_netlink_message_append_in6_addr(req, RTA_DST, &route->dst.in6); if (r < 0) return log_error_errno(r, "Could not append RTA_DST attribute: %m"); r = sd_rtnl_message_route_set_dst_prefixlen(req, route->dst_prefixlen); if (r < 0) return log_error_errno(r, "Could not set destination prefix length: %m"); } if (route->src_prefixlen) { if (route->family == AF_INET) r = sd_netlink_message_append_in_addr(req, RTA_SRC, &route->src.in); else if (route->family == AF_INET6) r = sd_netlink_message_append_in6_addr(req, RTA_SRC, &route->src.in6); if (r < 0) return log_error_errno(r, "Could not append RTA_SRC attribute: %m"); r = sd_rtnl_message_route_set_src_prefixlen(req, route->src_prefixlen); if (r < 0) return log_error_errno(r, "Could not set source prefix length: %m"); } if (!in_addr_is_null(route->family, &route->prefsrc)) { if (route->family == AF_INET) r = sd_netlink_message_append_in_addr(req, RTA_PREFSRC, &route->prefsrc.in); else if (route->family == AF_INET6) r = sd_netlink_message_append_in6_addr(req, RTA_PREFSRC, &route->prefsrc.in6); if (r < 0) return log_error_errno(r, "Could not append RTA_PREFSRC attribute: %m"); } r = sd_rtnl_message_route_set_scope(req, route->scope); if (r < 0) return log_error_errno(r, "Could not set scope: %m"); r = sd_netlink_message_append_u32(req, RTA_PRIORITY, route->priority); if (r < 0) return log_error_errno(r, "Could not append RTA_PRIORITY attribute: %m"); if (!IN_SET(route->type, RTN_UNREACHABLE, RTN_PROHIBIT, RTN_BLACKHOLE)) { r = sd_netlink_message_append_u32(req, RTA_OIF, link->ifindex); if (r < 0) return log_error_errno(r, "Could not append RTA_OIF attribute: %m"); } r = sd_netlink_call_async(link->manager->rtnl, req, callback, link, 0, NULL); if (r < 0) return log_error_errno(r, "Could not send rtnetlink message: %m"); link_ref(link); return 0; }