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-rw-r--r--src/network/networkd-route.c1192
1 files changed, 1192 insertions, 0 deletions
diff --git a/src/network/networkd-route.c b/src/network/networkd-route.c
new file mode 100644
index 0000000..5553a7e
--- /dev/null
+++ b/src/network/networkd-route.c
@@ -0,0 +1,1192 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include <linux/icmpv6.h>
+
+#include "alloc-util.h"
+#include "conf-parser.h"
+#include "in-addr-util.h"
+#include "missing_network.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_freep) Route *route = NULL;
+
+ route = new(Route, 1);
+ if (!route)
+ return -ENOMEM;
+
+ *route = (Route) {
+ .family = AF_UNSPEC,
+ .scope = RT_SCOPE_UNIVERSE,
+ .protocol = RTPROT_UNSPEC,
+ .type = RTN_UNICAST,
+ .table = RT_TABLE_MAIN,
+ .lifetime = USEC_INFINITY,
+ .quickack = -1,
+ };
+
+ *ret = TAKE_PTR(route);
+
+ return 0;
+}
+
+int route_new_static(Network *network, const char *filename, unsigned section_line, Route **ret) {
+ _cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL;
+ _cleanup_(route_freep) 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 = TAKE_PTR(route);
+
+ return 0;
+ }
+ }
+
+ if (network->n_static_routes >= routes_max())
+ return -E2BIG;
+
+ r = route_new(&route);
+ if (r < 0)
+ return r;
+
+ route->protocol = RTPROT_STATIC;
+ route->network = network;
+ LIST_PREPEND(routes, network->static_routes, route);
+ network->n_static_routes++;
+
+ if (filename) {
+ route->section = TAKE_PTR(n);
+
+ r = hashmap_ensure_allocated(&network->routes_by_section, &network_config_hash_ops);
+ if (r < 0)
+ return r;
+
+ r = hashmap_put(network->routes_by_section, route->section, route);
+ if (r < 0)
+ return r;
+ }
+
+ *ret = TAKE_PTR(route);
+
+ 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 Route *route, struct siphash *state) {
+ 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 Route *a, const Route *b) {
+ int r;
+
+ r = CMP(a->family, b->family);
+ if (r != 0)
+ return r;
+
+ switch (a->family) {
+ case AF_INET:
+ case AF_INET6:
+ r = CMP(a->dst_prefixlen, b->dst_prefixlen);
+ if (r != 0)
+ return r;
+
+ r = CMP(a->tos, b->tos);
+ if (r != 0)
+ return r;
+
+ r = CMP(a->priority, b->priority);
+ if (r != 0)
+ return r;
+
+ r = CMP(a->table, b->table);
+ if (r != 0)
+ return r;
+
+ return memcmp(&a->dst, &b->dst, FAMILY_ADDRESS_SIZE(a->family));
+ default:
+ /* treat any other address family as AF_UNSPEC */
+ return 0;
+ }
+}
+
+DEFINE_PRIVATE_HASH_OPS(route_hash_ops, Route, route_hash_func, route_compare_func);
+
+bool route_equal(Route *r1, Route *r2) {
+ if (r1 == r2)
+ return true;
+
+ if (!r1 || !r2)
+ return false;
+
+ return route_compare_func(r1, r2) == 0;
+}
+
+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_freep) 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;
+}
+
+void 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,
+ unsigned char type) {
+
+ assert(route);
+ assert(src || src_prefixlen == 0);
+
+ route->src = src ? *src : IN_ADDR_NULL;
+ route->src_prefixlen = src_prefixlen;
+ route->gw = gw ? *gw : IN_ADDR_NULL;
+ route->prefsrc = prefsrc ? *prefsrc : IN_ADDR_NULL;
+ route->scope = scope;
+ route->protocol = protocol;
+ route->type = type;
+}
+
+static int route_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) {
+ int r;
+
+ 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 != -ESRCH)
+ log_link_warning_errno(link, r, "Could not drop route: %m");
+
+ return 1;
+}
+
+int route_remove(Route *route, Link *link,
+ link_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, RTN_THROW)) {
+ 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 = netlink_call_async(link->manager->rtnl, NULL, req,
+ callback ?: route_remove_handler,
+ link_netlink_destroy_callback, link);
+ if (r < 0)
+ return log_error_errno(r, "Could not send rtnetlink message: %m");
+
+ link_ref(link);
+
+ return 0;
+}
+
+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, NULL);
+ 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,
+ link_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(IN_SET(route->family, AF_INET, AF_INET6));
+ assert(callback);
+
+ 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");
+
+ if (route->lifetime != USEC_INFINITY && kernel_route_expiration_supported()) {
+ r = sd_netlink_message_append_u32(req, RTA_EXPIRES,
+ DIV_ROUND_UP(usec_sub_unsigned(route->lifetime, now(clock_boottime_or_monotonic())), USEC_PER_SEC));
+ if (r < 0)
+ return log_error_errno(r, "Could not append RTA_EXPIRES attribute: %m");
+ }
+
+ r = sd_rtnl_message_route_set_type(req, route->type);
+ if (r < 0)
+ return log_error_errno(r, "Could not set route type: %m");
+
+ if (!IN_SET(route->type, RTN_UNREACHABLE, RTN_PROHIBIT, RTN_BLACKHOLE, RTN_THROW)) {
+ 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");
+ }
+
+ if (route->initcwnd > 0) {
+ r = sd_netlink_message_append_u32(req, RTAX_INITCWND, route->initcwnd);
+ if (r < 0)
+ return log_error_errno(r, "Could not append RTAX_INITCWND attribute: %m");
+ }
+
+ if (route->initrwnd > 0) {
+ r = sd_netlink_message_append_u32(req, RTAX_INITRWND, route->initrwnd);
+ if (r < 0)
+ return log_error_errno(r, "Could not append RTAX_INITRWND attribute: %m");
+ }
+
+ if (route->quickack != -1) {
+ r = sd_netlink_message_append_u32(req, RTAX_QUICKACK, route->quickack);
+ if (r < 0)
+ return log_error_errno(r, "Could not append RTAX_QUICKACK 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 = netlink_call_async(link->manager->rtnl, NULL, req, callback,
+ link_netlink_destroy_callback, link);
+ 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 && !kernel_route_expiration_supported()) {
+ 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 = TAKE_PTR(expire);
+
+ 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_freep) Route *n = NULL;
+ int r;
+
+ 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, &n->family, &n->gw);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r, "Route is invalid, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+
+ TAKE_PTR(n);
+
+ 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_freep) 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 = in_addr_from_string_auto(rvalue, &n->family, &n->prefsrc);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+ "Preferred source is invalid, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+
+ TAKE_PTR(n);
+
+ 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_freep) 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;
+
+ if (streq(lvalue, "Destination")) {
+ buffer = &n->dst;
+ prefixlen = &n->dst_prefixlen;
+ } else if (streq(lvalue, "Source")) {
+ buffer = &n->src;
+ prefixlen = &n->src_prefixlen;
+ } else
+ assert_not_reached(lvalue);
+
+ r = in_addr_prefix_from_string_auto(rvalue, &n->family, 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;
+ }
+
+ TAKE_PTR(n);
+ 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_freep) 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 = safe_atou32(rvalue, &n->priority);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r,
+ "Could not parse route priority \"%s\", ignoring assignment: %m", rvalue);
+ return 0;
+ }
+
+ TAKE_PTR(n);
+ 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_freep) 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;
+ }
+
+ TAKE_PTR(n);
+ 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_freep) Route *n = NULL;
+ Network *network = userdata;
+ 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, &n->table);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r,
+ "Could not parse route table number \"%s\", ignoring assignment: %m", rvalue);
+ return 0;
+ }
+
+ TAKE_PTR(n);
+ 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_freep) 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);
+ TAKE_PTR(n);
+ 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_freep) 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;
+ }
+
+ TAKE_PTR(n);
+ 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_freep) 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;
+ }
+ }
+
+ TAKE_PTR(n);
+ return 0;
+}
+
+int config_parse_route_type(
+ 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_freep) Route *n = NULL;
+ int r;
+
+ r = route_new_static(network, filename, section_line, &n);
+ if (r < 0)
+ return r;
+
+ if (streq(rvalue, "unicast"))
+ n->type = RTN_UNICAST;
+ else if (streq(rvalue, "blackhole"))
+ n->type = RTN_BLACKHOLE;
+ else if (streq(rvalue, "unreachable"))
+ n->type = RTN_UNREACHABLE;
+ else if (streq(rvalue, "prohibit"))
+ n->type = RTN_PROHIBIT;
+ else if (streq(rvalue, "throw"))
+ n->type = RTN_THROW;
+ else {
+ log_syntax(unit, LOG_ERR, filename, line, r, "Could not parse route type \"%s\", ignoring assignment: %m", rvalue);
+ return 0;
+ }
+
+ TAKE_PTR(n);
+ return 0;
+}
+
+int config_parse_tcp_window(
+ 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_freep) Route *n = NULL;
+ Network *network = userdata;
+ uint64_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 = parse_size(rvalue, 1024, &k);
+ if (r < 0 || k > UINT32_MAX) {
+ log_syntax(unit, LOG_ERR, filename, line, r,
+ "Could not parse TCP %s \"%s\" bytes, ignoring assignment: %m", rvalue, lvalue);
+ return 0;
+ }
+
+ if (streq(lvalue, "InitialCongestionWindow"))
+ n->initcwnd = k;
+ else if (streq(lvalue, "InitialAdvertisedReceiveWindow"))
+ n->initrwnd = k;
+ else {
+ log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse TCP %s: %s", lvalue, rvalue);
+ return 0;
+ }
+
+ TAKE_PTR(n);
+ return 0;
+}
+
+int config_parse_quickack(
+ 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_freep) Route *n = NULL;
+ Network *network = userdata;
+ int k, 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;
+
+ k = parse_boolean(rvalue);
+ if (k < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, k, "Failed to parse TCP quickack, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ n->quickack = !!k;
+ TAKE_PTR(n);
+ return 0;
+}
+
+int config_parse_route_mtu(
+ 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_freep) 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 = config_parse_mtu(unit, filename, line, section, section_line, lvalue, ltype, rvalue, &n->mtu, userdata);
+ if (r < 0)
+ return r;
+
+ TAKE_PTR(n);
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-13 11:42:40 +0000