| /*** |
| This file is part of systemd. |
| |
| Copyright 2013 Tom Gundersen <teg@jklm.no> |
| |
| systemd is free software; you can redistribute it and/or modify it |
| under the terms of the GNU Lesser General Public License as published by |
| the Free Software Foundation; either version 2.1 of the License, or |
| (at your option) any later version. |
| |
| systemd is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public License |
| along with systemd; If not, see <http://www.gnu.org/licenses/>. |
| ***/ |
| |
| #include <linux/icmpv6.h> |
| |
| #include "alloc-util.h" |
| #include "conf-parser.h" |
| #include "in-addr-util.h" |
| #include "netlink-util.h" |
| #include "networkd-manager.h" |
| #include "networkd-route.h" |
| #include "parse-util.h" |
| #include "set.h" |
| #include "string-util.h" |
| #include "sysctl-util.h" |
| #include "util.h" |
| |
| #define ROUTES_DEFAULT_MAX_PER_FAMILY 4096U |
| |
| static unsigned routes_max(void) { |
| static thread_local unsigned cached = 0; |
| |
| _cleanup_free_ char *s4 = NULL, *s6 = NULL; |
| unsigned val4 = ROUTES_DEFAULT_MAX_PER_FAMILY, val6 = ROUTES_DEFAULT_MAX_PER_FAMILY; |
| |
| if (cached > 0) |
| return cached; |
| |
| if (sysctl_read("net/ipv4/route/max_size", &s4) >= 0) { |
| truncate_nl(s4); |
| if (safe_atou(s4, &val4) >= 0 && |
| val4 == 2147483647U) |
| /* This is the default "no limit" value in the kernel */ |
| val4 = ROUTES_DEFAULT_MAX_PER_FAMILY; |
| } |
| |
| if (sysctl_read("net/ipv6/route/max_size", &s6) >= 0) { |
| truncate_nl(s6); |
| (void) safe_atou(s6, &val6); |
| } |
| |
| cached = MAX(ROUTES_DEFAULT_MAX_PER_FAMILY, val4) + |
| MAX(ROUTES_DEFAULT_MAX_PER_FAMILY, val6); |
| return cached; |
| } |
| |
| int route_new(Route **ret) { |
| _cleanup_route_free_ Route *route = NULL; |
| |
| route = new0(Route, 1); |
| if (!route) |
| return -ENOMEM; |
| |
| route->family = AF_UNSPEC; |
| route->scope = RT_SCOPE_UNIVERSE; |
| route->protocol = RTPROT_UNSPEC; |
| route->table = RT_TABLE_MAIN; |
| route->lifetime = USEC_INFINITY; |
| |
| *ret = route; |
| route = NULL; |
| |
| return 0; |
| } |
| |
| int route_new_static(Network *network, const char *filename, unsigned section_line, Route **ret) { |
| _cleanup_network_config_section_free_ NetworkConfigSection *n = NULL; |
| _cleanup_route_free_ Route *route = NULL; |
| int r; |
| |
| assert(network); |
| assert(ret); |
| assert(!!filename == (section_line > 0)); |
| |
| if (filename) { |
| r = network_config_section_new(filename, section_line, &n); |
| if (r < 0) |
| return r; |
| |
| route = hashmap_get(network->routes_by_section, n); |
| if (route) { |
| *ret = route; |
| route = NULL; |
| |
| return 0; |
| } |
| } |
| |
| if (network->n_static_routes >= routes_max()) |
| return -E2BIG; |
| |
| r = route_new(&route); |
| if (r < 0) |
| return r; |
| |
| route->protocol = RTPROT_STATIC; |
| |
| if (filename) { |
| route->section = n; |
| n = NULL; |
| |
| r = hashmap_put(network->routes_by_section, route->section, route); |
| if (r < 0) |
| return r; |
| } |
| |
| route->network = network; |
| LIST_PREPEND(routes, network->static_routes, route); |
| network->n_static_routes++; |
| |
| *ret = route; |
| route = NULL; |
| |
| return 0; |
| } |
| |
| void route_free(Route *route) { |
| if (!route) |
| return; |
| |
| if (route->network) { |
| LIST_REMOVE(routes, route->network->static_routes, route); |
| |
| assert(route->network->n_static_routes > 0); |
| route->network->n_static_routes--; |
| |
| if (route->section) |
| hashmap_remove(route->network->routes_by_section, route->section); |
| } |
| |
| network_config_section_free(route->section); |
| |
| if (route->link) { |
| set_remove(route->link->routes, route); |
| set_remove(route->link->routes_foreign, route); |
| } |
| |
| sd_event_source_unref(route->expire); |
| |
| free(route); |
| } |
| |
| static void route_hash_func(const void *b, struct siphash *state) { |
| const Route *route = b; |
| |
| assert(route); |
| |
| siphash24_compress(&route->family, sizeof(route->family), state); |
| |
| switch (route->family) { |
| case AF_INET: |
| case AF_INET6: |
| /* Equality of routes are given by the 4-touple |
| (dst_prefix,dst_prefixlen,tos,priority,table) */ |
| siphash24_compress(&route->dst, FAMILY_ADDRESS_SIZE(route->family), state); |
| siphash24_compress(&route->dst_prefixlen, sizeof(route->dst_prefixlen), state); |
| siphash24_compress(&route->tos, sizeof(route->tos), state); |
| siphash24_compress(&route->priority, sizeof(route->priority), state); |
| siphash24_compress(&route->table, sizeof(route->table), state); |
| |
| break; |
| default: |
| /* treat any other address family as AF_UNSPEC */ |
| break; |
| } |
| } |
| |
| static int route_compare_func(const void *_a, const void *_b) { |
| const Route *a = _a, *b = _b; |
| |
| if (a->family < b->family) |
| return -1; |
| if (a->family > b->family) |
| return 1; |
| |
| switch (a->family) { |
| case AF_INET: |
| case AF_INET6: |
| if (a->dst_prefixlen < b->dst_prefixlen) |
| return -1; |
| if (a->dst_prefixlen > b->dst_prefixlen) |
| return 1; |
| |
| if (a->tos < b->tos) |
| return -1; |
| if (a->tos > b->tos) |
| return 1; |
| |
| if (a->priority < b->priority) |
| return -1; |
| if (a->priority > b->priority) |
| return 1; |
| |
| if (a->table < b->table) |
| return -1; |
| if (a->table > b->table) |
| return 1; |
| |
| return memcmp(&a->dst, &b->dst, FAMILY_ADDRESS_SIZE(a->family)); |
| default: |
| /* treat any other address family as AF_UNSPEC */ |
| return 0; |
| } |
| } |
| |
| static const struct hash_ops route_hash_ops = { |
| .hash = route_hash_func, |
| .compare = route_compare_func |
| }; |
| |
| int route_get(Link *link, |
| int family, |
| const union in_addr_union *dst, |
| unsigned char dst_prefixlen, |
| unsigned char tos, |
| uint32_t priority, |
| uint32_t table, |
| Route **ret) { |
| |
| Route route, *existing; |
| |
| assert(link); |
| assert(dst); |
| |
| route = (Route) { |
| .family = family, |
| .dst = *dst, |
| .dst_prefixlen = dst_prefixlen, |
| .tos = tos, |
| .priority = priority, |
| .table = table, |
| }; |
| |
| existing = set_get(link->routes, &route); |
| if (existing) { |
| if (ret) |
| *ret = existing; |
| return 1; |
| } |
| |
| existing = set_get(link->routes_foreign, &route); |
| if (existing) { |
| if (ret) |
| *ret = existing; |
| return 0; |
| } |
| |
| return -ENOENT; |
| } |
| |
| static int route_add_internal( |
| Link *link, |
| Set **routes, |
| int family, |
| const union in_addr_union *dst, |
| unsigned char dst_prefixlen, |
| unsigned char tos, |
| uint32_t priority, |
| uint32_t table, |
| Route **ret) { |
| |
| _cleanup_route_free_ Route *route = NULL; |
| int r; |
| |
| assert(link); |
| assert(routes); |
| assert(dst); |
| |
| r = route_new(&route); |
| if (r < 0) |
| return r; |
| |
| route->family = family; |
| route->dst = *dst; |
| route->dst_prefixlen = dst_prefixlen; |
| route->tos = tos; |
| route->priority = priority; |
| route->table = table; |
| |
| r = set_ensure_allocated(routes, &route_hash_ops); |
| if (r < 0) |
| return r; |
| |
| r = set_put(*routes, route); |
| if (r < 0) |
| return r; |
| |
| route->link = link; |
| |
| if (ret) |
| *ret = route; |
| |
| route = NULL; |
| |
| return 0; |
| } |
| |
| int route_add_foreign( |
| Link *link, |
| int family, |
| const union in_addr_union *dst, |
| unsigned char dst_prefixlen, |
| unsigned char tos, |
| uint32_t priority, |
| uint32_t table, |
| Route **ret) { |
| |
| return route_add_internal(link, &link->routes_foreign, family, dst, dst_prefixlen, tos, priority, table, ret); |
| } |
| |
| int route_add( |
| Link *link, |
| int family, |
| const union in_addr_union *dst, |
| unsigned char dst_prefixlen, |
| unsigned char tos, |
| uint32_t priority, |
| uint32_t table, |
| Route **ret) { |
| |
| Route *route; |
| int r; |
| |
| r = route_get(link, family, dst, dst_prefixlen, tos, priority, table, &route); |
| if (r == -ENOENT) { |
| /* Route does not exist, create a new one */ |
| r = route_add_internal(link, &link->routes, family, dst, dst_prefixlen, tos, priority, table, &route); |
| if (r < 0) |
| return r; |
| } else if (r == 0) { |
| /* Take over a foreign route */ |
| r = set_ensure_allocated(&link->routes, &route_hash_ops); |
| if (r < 0) |
| return r; |
| |
| r = set_put(link->routes, route); |
| if (r < 0) |
| return r; |
| |
| set_remove(link->routes_foreign, route); |
| } else if (r == 1) { |
| /* Route exists, do nothing */ |
| ; |
| } else |
| return r; |
| |
| if (ret) |
| *ret = route; |
| |
| return 0; |
| } |
| |
| int route_update(Route *route, |
| const union in_addr_union *src, |
| unsigned char src_prefixlen, |
| const union in_addr_union *gw, |
| const union in_addr_union *prefsrc, |
| unsigned char scope, |
| unsigned char protocol) { |
| |
| assert(route); |
| assert(src); |
| assert(gw); |
| assert(prefsrc); |
| |
| route->src = *src; |
| route->src_prefixlen = src_prefixlen; |
| route->gw = *gw; |
| route->prefsrc = *prefsrc; |
| route->scope = scope; |
| route->protocol = protocol; |
| |
| 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(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->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"); |
| |
| 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; |
| } |
| |
| static int route_expire_callback(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
| Link *link = userdata; |
| int r; |
| |
| assert(rtnl); |
| assert(m); |
| assert(link); |
| assert(link->ifname); |
| |
| if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
| return 1; |
| |
| r = sd_netlink_message_get_errno(m); |
| if (r < 0 && r != -EEXIST) |
| log_link_warning_errno(link, r, "could not remove route: %m"); |
| |
| return 1; |
| } |
| |
| int route_expire_handler(sd_event_source *s, uint64_t usec, void *userdata) { |
| Route *route = userdata; |
| int r; |
| |
| assert(route); |
| |
| r = route_remove(route, route->link, route_expire_callback); |
| if (r < 0) |
| log_warning_errno(r, "Could not remove route: %m"); |
| else |
| route_free(route); |
| |
| return 1; |
| } |
| |
| 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_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_MAIN) { |
| 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_message_open_container(req, RTA_METRICS); |
| if (r < 0) |
| return log_error_errno(r, "Could not append RTA_METRICS attribute: %m"); |
| |
| if (route->mtu > 0) { |
| r = sd_netlink_message_append_u32(req, RTAX_MTU, route->mtu); |
| if (r < 0) |
| return log_error_errno(r, "Could not append RTAX_MTU attribute: %m"); |
| } |
| |
| r = sd_netlink_message_close_container(req); |
| if (r < 0) |
| return log_error_errno(r, "Could not append RTA_METRICS 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 config_parse_gateway(const char *unit, |
| const char *filename, |
| unsigned line, |
| const char *section, |
| unsigned section_line, |
| const char *lvalue, |
| int ltype, |
| const char *rvalue, |
| void *data, |
| void *userdata) { |
| |
| Network *network = userdata; |
| _cleanup_route_free_ Route *n = NULL; |
| union in_addr_union buffer; |
| int r, f; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| assert(data); |
| |
| if (streq(section, "Network")) { |
| /* we are not in an Route section, so treat |
| * this as the special '0' section */ |
| r = route_new_static(network, NULL, 0, &n); |
| } else |
| r = route_new_static(network, filename, section_line, &n); |
| |
| if (r < 0) |
| return r; |
| |
| r = in_addr_from_string_auto(rvalue, &f, &buffer); |
| if (r < 0) { |
| log_syntax(unit, LOG_ERR, filename, line, r, "Route is invalid, ignoring assignment: %s", rvalue); |
| return 0; |
| } |
| |
| n->family = f; |
| n->gw = buffer; |
| n = NULL; |
| |
| return 0; |
| } |
| |
| int config_parse_preferred_src(const char *unit, |
| const char *filename, |
| unsigned line, |
| const char *section, |
| unsigned section_line, |
| const char *lvalue, |
| int ltype, |
| const char *rvalue, |
| void *data, |
| void *userdata) { |
| |
| Network *network = userdata; |
| _cleanup_route_free_ Route *n = NULL; |
| union in_addr_union buffer; |
| int r, f; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| assert(data); |
| |
| r = route_new_static(network, filename, section_line, &n); |
| if (r < 0) |
| return r; |
| |
| r = in_addr_from_string_auto(rvalue, &f, &buffer); |
| if (r < 0) { |
| log_syntax(unit, LOG_ERR, filename, line, EINVAL, |
| "Preferred source is invalid, ignoring assignment: %s", rvalue); |
| return 0; |
| } |
| |
| n->family = f; |
| n->prefsrc = buffer; |
| n = NULL; |
| |
| return 0; |
| } |
| |
| int config_parse_destination(const char *unit, |
| const char *filename, |
| unsigned line, |
| const char *section, |
| unsigned section_line, |
| const char *lvalue, |
| int ltype, |
| const char *rvalue, |
| void *data, |
| void *userdata) { |
| |
| Network *network = userdata; |
| _cleanup_route_free_ Route *n = NULL; |
| union in_addr_union buffer; |
| unsigned char prefixlen; |
| int r; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| assert(data); |
| |
| r = route_new_static(network, filename, section_line, &n); |
| if (r < 0) |
| return r; |
| |
| r = in_addr_prefix_from_string(rvalue, AF_INET, &buffer, &prefixlen); |
| if (r < 0) { |
| r = in_addr_prefix_from_string(rvalue, AF_INET6, &buffer, &prefixlen); |
| if (r < 0) { |
| log_syntax(unit, LOG_ERR, filename, line, r, |
| "Route %s= prefix is invalid, ignoring assignment: %s", |
| lvalue, rvalue); |
| return 0; |
| } |
| |
| n->family = AF_INET6; |
| } else |
| n->family = AF_INET; |
| |
| if (streq(lvalue, "Destination")) { |
| n->dst = buffer; |
| n->dst_prefixlen = prefixlen; |
| } else if (streq(lvalue, "Source")) { |
| n->src = buffer; |
| n->src_prefixlen = prefixlen; |
| } else |
| assert_not_reached(lvalue); |
| |
| n = NULL; |
| |
| return 0; |
| } |
| |
| int config_parse_route_priority(const char *unit, |
| const char *filename, |
| unsigned line, |
| const char *section, |
| unsigned section_line, |
| const char *lvalue, |
| int ltype, |
| const char *rvalue, |
| void *data, |
| void *userdata) { |
| Network *network = userdata; |
| _cleanup_route_free_ Route *n = NULL; |
| uint32_t k; |
| int r; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| assert(data); |
| |
| r = route_new_static(network, filename, section_line, &n); |
| if (r < 0) |
| return r; |
| |
| r = safe_atou32(rvalue, &k); |
| if (r < 0) { |
| log_syntax(unit, LOG_ERR, filename, line, r, |
| "Could not parse route priority \"%s\", ignoring assignment: %m", rvalue); |
| return 0; |
| } |
| |
| n->priority = k; |
| n = NULL; |
| |
| return 0; |
| } |
| |
| int config_parse_route_scope(const char *unit, |
| const char *filename, |
| unsigned line, |
| const char *section, |
| unsigned section_line, |
| const char *lvalue, |
| int ltype, |
| const char *rvalue, |
| void *data, |
| void *userdata) { |
| Network *network = userdata; |
| _cleanup_route_free_ Route *n = NULL; |
| int r; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| assert(data); |
| |
| r = route_new_static(network, filename, section_line, &n); |
| if (r < 0) |
| return r; |
| |
| if (streq(rvalue, "host")) |
| n->scope = RT_SCOPE_HOST; |
| else if (streq(rvalue, "link")) |
| n->scope = RT_SCOPE_LINK; |
| else if (streq(rvalue, "global")) |
| n->scope = RT_SCOPE_UNIVERSE; |
| else { |
| log_syntax(unit, LOG_ERR, filename, line, 0, "Unknown route scope: %s", rvalue); |
| return 0; |
| } |
| |
| n = NULL; |
| |
| return 0; |
| } |
| |
| int config_parse_route_table(const char *unit, |
| const char *filename, |
| unsigned line, |
| const char *section, |
| unsigned section_line, |
| const char *lvalue, |
| int ltype, |
| const char *rvalue, |
| void *data, |
| void *userdata) { |
| _cleanup_route_free_ Route *n = NULL; |
| Network *network = userdata; |
| uint32_t k; |
| int r; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| assert(data); |
| |
| r = route_new_static(network, filename, section_line, &n); |
| if (r < 0) |
| return r; |
| |
| r = safe_atou32(rvalue, &k); |
| if (r < 0) { |
| log_syntax(unit, LOG_ERR, filename, line, r, |
| "Could not parse route table number \"%s\", ignoring assignment: %m", rvalue); |
| return 0; |
| } |
| |
| n->table = k; |
| |
| n = NULL; |
| |
| return 0; |
| } |
| |
| int config_parse_gateway_onlink(const char *unit, |
| const char *filename, |
| unsigned line, |
| const char *section, |
| unsigned section_line, |
| const char *lvalue, |
| int ltype, |
| const char *rvalue, |
| void *data, |
| void *userdata) { |
| Network *network = userdata; |
| _cleanup_route_free_ Route *n = NULL; |
| int r; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| assert(data); |
| |
| r = route_new_static(network, filename, section_line, &n); |
| if (r < 0) |
| return r; |
| |
| r = parse_boolean(rvalue); |
| if (r < 0) { |
| log_syntax(unit, LOG_ERR, filename, line, r, |
| "Could not parse gateway onlink \"%s\", ignoring assignment: %m", rvalue); |
| return 0; |
| } |
| |
| SET_FLAG(n->flags, RTNH_F_ONLINK, r); |
| n = NULL; |
| |
| return 0; |
| } |
| |
| int config_parse_ipv6_route_preference(const char *unit, |
| const char *filename, |
| unsigned line, |
| const char *section, |
| unsigned section_line, |
| const char *lvalue, |
| int ltype, |
| const char *rvalue, |
| void *data, |
| void *userdata) { |
| Network *network = userdata; |
| _cleanup_route_free_ Route *n = NULL; |
| int r; |
| |
| r = route_new_static(network, filename, section_line, &n); |
| if (r < 0) |
| return r; |
| |
| if (streq(rvalue, "low")) |
| n->pref = ICMPV6_ROUTER_PREF_LOW; |
| else if (streq(rvalue, "medium")) |
| n->pref = ICMPV6_ROUTER_PREF_MEDIUM; |
| else if (streq(rvalue, "high")) |
| n->pref = ICMPV6_ROUTER_PREF_HIGH; |
| else { |
| log_syntax(unit, LOG_ERR, filename, line, 0, "Unknown route preference: %s", rvalue); |
| return 0; |
| } |
| |
| n = NULL; |
| |
| return 0; |
| } |
| |
| int config_parse_route_protocol(const char *unit, |
| const char *filename, |
| unsigned line, |
| const char *section, |
| unsigned section_line, |
| const char *lvalue, |
| int ltype, |
| const char *rvalue, |
| void *data, |
| void *userdata) { |
| Network *network = userdata; |
| _cleanup_route_free_ Route *n = NULL; |
| int r; |
| |
| r = route_new_static(network, filename, section_line, &n); |
| if (r < 0) |
| return r; |
| |
| if (streq(rvalue, "kernel")) |
| n->protocol = RTPROT_KERNEL; |
| else if (streq(rvalue, "boot")) |
| n->protocol = RTPROT_BOOT; |
| else if (streq(rvalue, "static")) |
| n->protocol = RTPROT_STATIC; |
| else { |
| r = safe_atou8(rvalue , &n->protocol); |
| if (r < 0) { |
| log_syntax(unit, LOG_ERR, filename, line, r, "Could not parse route protocol \"%s\", ignoring assignment: %m", rvalue); |
| return 0; |
| } |
| } |
| |
| n = NULL; |
| |
| return 0; |
| } |