network: split networkd-route.[ch]

1 files changed, 1 insertions, 382 deletions

diff --git a/src/network/networkd-route.c b/src/network/networkd-route.c
index ed8c113a54..946c69621f 100644
--- a/src/network/networkd-route.c
+++ b/src/network/networkd-route.c
@@ -13,166 +13,13 @@
 #include "networkd-network.h"
 #include "networkd-nexthop.h"
 #include "networkd-queue.h"
+#include "networkd-route-util.h"
 #include "networkd-route.h"
 #include "parse-util.h"
-#include "string-table.h"
 #include "string-util.h"
 #include "strv.h"
-#include "strxcpyx.h"
-#include "sysctl-util.h"
 #include "vrf.h"
 
-#define ROUTES_DEFAULT_MAX_PER_FAMILY 4096U
-
-static const char * const route_type_table[__RTN_MAX] = {
-        [RTN_UNICAST]     = "unicast",
-        [RTN_LOCAL]       = "local",
-        [RTN_BROADCAST]   = "broadcast",
-        [RTN_ANYCAST]     = "anycast",
-        [RTN_MULTICAST]   = "multicast",
-        [RTN_BLACKHOLE]   = "blackhole",
-        [RTN_UNREACHABLE] = "unreachable",
-        [RTN_PROHIBIT]    = "prohibit",
-        [RTN_THROW]       = "throw",
-        [RTN_NAT]         = "nat",
-        [RTN_XRESOLVE]    = "xresolve",
-};
-
-assert_cc(__RTN_MAX <= UCHAR_MAX);
-DEFINE_PRIVATE_STRING_TABLE_LOOKUP(route_type, int);
-
-static const char * const route_scope_table[] = {
-        [RT_SCOPE_UNIVERSE] = "global",
-        [RT_SCOPE_SITE]     = "site",
-        [RT_SCOPE_LINK]     = "link",
-        [RT_SCOPE_HOST]     = "host",
-        [RT_SCOPE_NOWHERE]  = "nowhere",
-};
-
-DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(route_scope, int);
-DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING_FALLBACK(route_scope, int, UINT8_MAX);
-
-static const char * const route_table_table[] = {
-        [RT_TABLE_DEFAULT] = "default",
-        [RT_TABLE_MAIN]    = "main",
-        [RT_TABLE_LOCAL]   = "local",
-};
-
-DEFINE_PRIVATE_STRING_TABLE_LOOKUP(route_table, int);
-
-int manager_get_route_table_from_string(const Manager *m, const char *s, uint32_t *ret) {
-        uint32_t t;
-        int r;
-
-        assert(m);
-        assert(s);
-        assert(ret);
-
-        r = route_table_from_string(s);
-        if (r >= 0) {
-                *ret = (uint32_t) r;
-                return 0;
-        }
-
-        t = PTR_TO_UINT32(hashmap_get(m->route_table_numbers_by_name, s));
-        if (t != 0) {
-                *ret = t;
-                return 0;
-        }
-
-        r = safe_atou32(s, &t);
-        if (r < 0)
-                return r;
-
-        if (t == 0)
-                return -ERANGE;
-
-        *ret = t;
-        return 0;
-}
-
-int manager_get_route_table_to_string(const Manager *m, uint32_t table, char **ret) {
-        _cleanup_free_ char *str = NULL;
-        const char *s;
-        int r;
-
-        assert(m);
-        assert(ret);
-
-        if (table == 0)
-                return -EINVAL;
-
-        s = route_table_to_string(table);
-        if (!s)
-                s = hashmap_get(m->route_table_names_by_number, UINT32_TO_PTR(table));
-
-        if (s)
-                /* Currently, this is only used in debugging logs. To not confuse any bug
-                 * reports, let's include the table number. */
-                r = asprintf(&str, "%s(%" PRIu32 ")", s, table);
-        else
-                r = asprintf(&str, "%" PRIu32, table);
-        if (r < 0)
-                return -ENOMEM;
-
-        *ret = TAKE_PTR(str);
-        return 0;
-}
-
-static const char * const route_protocol_table[] = {
-        [RTPROT_KERNEL] = "kernel",
-        [RTPROT_BOOT]   = "boot",
-        [RTPROT_STATIC] = "static",
-};
-
-DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_FALLBACK(route_protocol, int, UINT8_MAX);
-
-static const char * const route_protocol_full_table[] = {
-        [RTPROT_REDIRECT] = "redirect",
-        [RTPROT_KERNEL]   = "kernel",
-        [RTPROT_BOOT]     = "boot",
-        [RTPROT_STATIC]   = "static",
-        [RTPROT_GATED]    = "gated",
-        [RTPROT_RA]       = "ra",
-        [RTPROT_MRT]      = "mrt",
-        [RTPROT_ZEBRA]    = "zebra",
-        [RTPROT_BIRD]     = "bird",
-        [RTPROT_DNROUTED] = "dnrouted",
-        [RTPROT_XORP]     = "xorp",
-        [RTPROT_NTK]      = "ntk",
-        [RTPROT_DHCP]     = "dhcp",
-        [RTPROT_MROUTED]  = "mrouted",
-        [RTPROT_BABEL]    = "babel",
-        [RTPROT_BGP]      = "bgp",
-        [RTPROT_ISIS]     = "isis",
-        [RTPROT_OSPF]     = "ospf",
-        [RTPROT_RIP]      = "rip",
-        [RTPROT_EIGRP]    = "eigrp",
-};
-
-DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING_FALLBACK(route_protocol_full, int, UINT8_MAX);
-
-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_ip_property(AF_INET, NULL, "route/max_size", &s4) >= 0)
-                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_ip_property(AF_INET6, NULL, "route/max_size", &s6) >= 0)
-                (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;
 
@@ -695,112 +542,6 @@ void link_mark_routes(Link *link, NetworkConfigSource source, const struct in6_a
         }
 }
 
-static bool link_address_is_reachable(Link *link, int family, const union in_addr_union *address) {
-        Route *route;
-        Address *a;
-
-        assert(link);
-        assert(link->manager);
-        assert(IN_SET(family, AF_INET, AF_INET6));
-        assert(address);
-
-        SET_FOREACH(route, link->routes) {
-                if (!route_exists(route))
-                        continue;
-                if (route->family != family)
-                        continue;
-                if (!in_addr_is_set(route->family, &route->dst))
-                        continue;
-                if (in_addr_prefix_covers(family, &route->dst, route->dst_prefixlen, address) > 0)
-                        return true;
-        }
-
-        if (link->manager->manage_foreign_routes)
-                return false;
-
-        /* If we do not manage foreign routes, then there may exist a prefix route we do not know,
-         * which was created on configuring an address. Hence, also check the addresses. */
-        SET_FOREACH(a, link->addresses) {
-                if (!address_is_ready(a))
-                        continue;
-                if (a->family != family)
-                        continue;
-                if (FLAGS_SET(a->flags, IFA_F_NOPREFIXROUTE))
-                        continue;
-                if (in_addr_is_set(a->family, &a->in_addr_peer))
-                        continue;
-                if (in_addr_prefix_covers(family, &a->in_addr, a->prefixlen, address) > 0)
-                        return true;
-        }
-
-        return false;
-}
-
-static Route *link_find_default_gateway(Link *link, int family, Route *gw) {
-        Route *route;
-
-        assert(link);
-
-        SET_FOREACH(route, link->routes) {
-                if (!route_exists(route))
-                        continue;
-                if (family != AF_UNSPEC && route->family != family)
-                        continue;
-                if (route->dst_prefixlen != 0)
-                        continue;
-                if (route->src_prefixlen != 0)
-                        continue;
-                if (route->table != RT_TABLE_MAIN)
-                        continue;
-                if (route->type != RTN_UNICAST)
-                        continue;
-                if (route->scope != RT_SCOPE_UNIVERSE)
-                        continue;
-                if (!in_addr_is_set(route->gw_family, &route->gw))
-                        continue;
-                if (gw) {
-                        if (route->gw_weight > gw->gw_weight)
-                                continue;
-                        if (route->priority >= gw->priority)
-                                continue;
-                }
-                gw = route;
-        }
-
-        return gw;
-}
-
-int manager_find_uplink(Manager *m, int family, Link *exclude, Link **ret) {
-        Route *gw = NULL;
-        Link *link;
-
-        assert(m);
-        assert(IN_SET(family, AF_UNSPEC, AF_INET, AF_INET6));
-
-        /* Looks for a suitable "uplink", via black magic: an interface that is up and where the
-         * default route with the highest priority points to. */
-
-        HASHMAP_FOREACH(link, m->links_by_index) {
-                if (link == exclude)
-                        continue;
-
-                if (link->state != LINK_STATE_CONFIGURED)
-                        continue;
-
-                gw = link_find_default_gateway(link, family, gw);
-        }
-
-        if (!gw)
-                return -ENOENT;
-
-        if (ret) {
-                assert(gw->link);
-                *ret = gw->link;
-        }
-
-        return 0;
-}
-
 static void log_route_debug(const Route *route, const char *str, const Link *link, const Manager *manager) {
         _cleanup_free_ char *state = NULL, *dst = NULL, *src = NULL, *gw_alloc = NULL, *prefsrc = NULL,
                 *table = NULL, *scope = NULL, *proto = NULL;
@@ -1628,22 +1369,6 @@ int link_request_static_routes(Link *link, bool only_ipv4) {
         return 0;
 }
 
-bool gateway_is_ready(Link *link, bool onlink, int family, const union in_addr_union *gw) {
-        assert(link);
-        assert(gw);
-
-        if (onlink)
-                return true;
-
-        if (!in_addr_is_set(family, gw))
-                return true;
-
-        if (family == AF_INET6 && in6_addr_is_link_local(&gw->in6))
-                return true;
-
-        return link_address_is_reachable(link, family, gw);
-}
-
 static int route_is_ready_to_configure(const Route *route, Link *link) {
         int r;
 
@@ -2958,112 +2683,6 @@ int config_parse_multipath_route(
         return 0;
 }
 
-int config_parse_route_table_names(
-                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) {
-
-        Manager *m = userdata;
-        int r;
-
-        assert(filename);
-        assert(lvalue);
-        assert(rvalue);
-        assert(userdata);
-
-        if (isempty(rvalue)) {
-                m->route_table_names_by_number = hashmap_free(m->route_table_names_by_number);
-                m->route_table_numbers_by_name = hashmap_free(m->route_table_numbers_by_name);
-                return 0;
-        }
-
-        for (const char *p = rvalue;;) {
-                _cleanup_free_ char *name = NULL;
-                uint32_t table;
-                char *num;
-
-                r = extract_first_word(&p, &name, NULL, 0);
-                if (r == -ENOMEM)
-                        return log_oom();
-                if (r < 0) {
-                        log_syntax(unit, LOG_WARNING, filename, line, r,
-                                   "Invalid RouteTable=, ignoring assignment: %s", rvalue);
-                        return 0;
-                }
-                if (r == 0)
-                        return 0;
-
-                num = strchr(name, ':');
-                if (!num) {
-                        log_syntax(unit, LOG_WARNING, filename, line, 0,
-                                   "Invalid route table name and number pair, ignoring assignment: %s", name);
-                        continue;
-                }
-
-                *num++ = '\0';
-
-                if (STR_IN_SET(name, "default", "main", "local")) {
-                        log_syntax(unit, LOG_WARNING, filename, line, 0,
-                                   "Route table name %s already predefined. Ignoring assignment: %s:%s", name, name, num);
-                        continue;
-                }
-
-                r = safe_atou32(num, &table);
-                if (r < 0) {
-                        log_syntax(unit, LOG_WARNING, filename, line, r,
-                                   "Failed to parse route table number '%s', ignoring assignment: %s:%s", num, name, num);
-                        continue;
-                }
-                if (table == 0) {
-                        log_syntax(unit, LOG_WARNING, filename, line, 0,
-                                   "Invalid route table number, ignoring assignment: %s:%s", name, num);
-                        continue;
-                }
-
-                r = hashmap_ensure_put(&m->route_table_numbers_by_name, &string_hash_ops_free, name, UINT32_TO_PTR(table));
-                if (r == -ENOMEM)
-                        return log_oom();
-                if (r == -EEXIST) {
-                        log_syntax(unit, LOG_WARNING, filename, line, r,
-                                   "Specified route table name and number pair conflicts with others, ignoring assignment: %s:%s", name, num);
-                        continue;
-                }
-                if (r < 0) {
-                        log_syntax(unit, LOG_WARNING, filename, line, r,
-                                   "Failed to store route table name and number pair, ignoring assignment: %s:%s", name, num);
-                        continue;
-                }
-                if (r == 0)
-                        /* The entry is duplicated. It should not be added to route_table_names_by_number hashmap. */
-                        continue;
-
-                r = hashmap_ensure_put(&m->route_table_names_by_number, NULL, UINT32_TO_PTR(table), name);
-                if (r < 0) {
-                        hashmap_remove(m->route_table_numbers_by_name, name);
-
-                        if (r == -ENOMEM)
-                                return log_oom();
-                        if (r == -EEXIST)
-                                log_syntax(unit, LOG_WARNING, filename, line, r,
-                                           "Specified route table name and number pair conflicts with others, ignoring assignment: %s:%s", name, num);
-                        else
-                                log_syntax(unit, LOG_WARNING, filename, line, r,
-                                           "Failed to store route table name and number pair, ignoring assignment: %s:%s", name, num);
-                        continue;
-                }
-                assert(r > 0);
-
-                TAKE_PTR(name);
-        }
-}
-
 static int route_section_verify(Route *route, Network *network) {
         if (section_is_invalid(route->section))
                 return -EINVAL;