networkd: make metric of routes configurable

[elogind.git] / src / network / networkd-manager.c

diff --git a/src/network/networkd-manager.c b/src/network/networkd-manager.c
index 2e3b4bb885e010249ca56c582a28e6b1c5415ca5..46b803fee5d82a907e8bf2c9c85e9cfde44ee694 100644 (file)
--- a/src/network/networkd-manager.c
+++ b/src/network/networkd-manager.c
@@ -21,7 +21,6 @@
 
 #include <sys/socket.h>
 #include <linux/if.h>
-#include <libkmod.h>
 
 #include "conf-parser.h"
 #include "path-util.h"
@@ -44,32 +43,27 @@ const char* const network_dirs[] = {
 #endif
         NULL};
 
-static int dispatch_sigterm(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) {
-        Manager *m = userdata;
+static int setup_default_address_pool(Manager *m) {
+        AddressPool *p;
+        int r;
 
         assert(m);
 
-        log_received_signal(LOG_INFO, si);
-
-        sd_event_exit(m->event, 0);
-        return 0;
-}
+        /* Add in the well-known private address ranges. */
 
-static int setup_signals(Manager *m) {
-        sigset_t mask;
-        int r;
-
-        assert(m);
+        r = address_pool_new_from_string(m, &p, AF_INET6, "fc00::", 7);
+        if (r < 0)
+                return r;
 
-        assert_se(sigemptyset(&mask) == 0);
-        sigset_add_many(&mask, SIGINT, SIGTERM, -1);
-        assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
+        r = address_pool_new_from_string(m, &p, AF_INET, "192.168.0.0", 16);
+        if (r < 0)
+                return r;
 
-        r = sd_event_add_signal(m->event, &m->sigterm_event_source, SIGTERM, dispatch_sigterm, m);
+        r = address_pool_new_from_string(m, &p, AF_INET, "172.16.0.0", 12);
         if (r < 0)
                 return r;
 
-        r = sd_event_add_signal(m->event, &m->sigint_event_source, SIGINT, dispatch_sigterm, m);
+        r = address_pool_new_from_string(m, &p, AF_INET, "10.0.0.0", 8);
         if (r < 0)
                 return r;
 
@@ -84,7 +78,7 @@ int manager_new(Manager **ret) {
         if (!m)
                 return -ENOMEM;
 
-        m->state_file = strdup("/run/systemd/network/state");
+        m->state_file = strdup("/run/systemd/netif/state");
         if (!m->state_file)
                 return -ENOMEM;
 
@@ -94,6 +88,9 @@ int manager_new(Manager **ret) {
 
         sd_event_set_watchdog(m->event, true);
 
+        sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL);
+        sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);
+
         r = sd_rtnl_open(&m->rtnl, 3, RTNLGRP_LINK, RTNLGRP_IPV4_IFADDR,
                          RTNLGRP_IPV6_IFADDR);
         if (r < 0)
@@ -103,10 +100,6 @@ int manager_new(Manager **ret) {
         if (r < 0 && r != -ENOENT) /* TODO: drop when we can rely on kdbus */
                 return r;
 
-        r = setup_signals(m);
-        if (r < 0)
-                return r;
-
         /* udev does not initialize devices inside containers,
          * so we rely on them being already initialized before
          * entering the container */
@@ -120,10 +113,6 @@ int manager_new(Manager **ret) {
                         return -ENOMEM;
         }
 
-        m->kmod_ctx = kmod_new(NULL, NULL);
-        if (!m->kmod_ctx)
-                return -ENOMEM;
-
         m->links = hashmap_new(uint64_hash_func, uint64_compare_func);
         if (!m->links)
                 return -ENOMEM;
@@ -134,6 +123,10 @@ int manager_new(Manager **ret) {
 
         LIST_HEAD_INIT(m->networks);
 
+        r = setup_default_address_pool(m);
+        if (r < 0)
+                return r;
+
         *ret = m;
         m = NULL;
 
@@ -144,13 +137,13 @@ void manager_free(Manager *m) {
         Network *network;
         NetDev *netdev;
         Link *link;
+        AddressPool *pool;
 
         if (!m)
                 return;
 
         free(m->state_file);
 
-        kmod_unref(m->kmod_ctx);
         udev_monitor_unref(m->udev_monitor);
         udev_unref(m->udev);
         sd_bus_unref(m->bus);
@@ -170,6 +163,9 @@ void manager_free(Manager *m) {
                 netdev_unref(netdev);
         hashmap_free(m->netdevs);
 
+        while ((pool = m->address_pools))
+                address_pool_free(pool);
+
         sd_rtnl_unref(m->rtnl);
 
         free(m);
@@ -263,7 +259,8 @@ static int manager_rtnl_process_link(sd_rtnl *rtnl, sd_rtnl_message *message, vo
                         /* link is new, so add it */
                         r = link_add(m, message, &link);
                         if (r < 0) {
-                                log_debug("could not add new link");
+                                log_debug("could not add new link: %s",
+                                           strerror(-r));
                                 return 0;
                         }
                 }
@@ -381,6 +378,8 @@ int manager_udev_listen(Manager *m) {
 int manager_rtnl_listen(Manager *m) {
         int r;
 
+        assert(m);
+
         r = sd_rtnl_attach_event(m->rtnl, m->event, 0);
         if (r < 0)
                 return r;
@@ -424,8 +423,8 @@ int manager_save(Manager *m) {
         Iterator i;
         _cleanup_free_ char *temp_path = NULL;
         _cleanup_fclose_ FILE *f = NULL;
-        const char *oper_state = "unknown";
-        bool dormant = false, carrier = false;
+        LinkOperationalState operstate = LINK_OPERSTATE_UNKNOWN;
+        const char *operstate_str;
         int r;
 
         assert(m);
@@ -435,16 +434,12 @@ int manager_save(Manager *m) {
                 if (link->flags & IFF_LOOPBACK)
                         continue;
 
-                if (link_has_carrier(link->flags, link->operstate))
-                        carrier = true;
-                else if (link->operstate == IF_OPER_DORMANT)
-                        dormant = true;
+                if (link->operstate > operstate)
+                        operstate = link->operstate;
         }
 
-        if (carrier)
-                oper_state = "carrier";
-        else if (dormant)
-                oper_state = "dormant";
+        operstate_str = link_operstate_to_string(operstate);
+        assert(operstate_str);
 
         r = fopen_temporary(m->state_file, &f, &temp_path);
         if (r < 0)
@@ -454,7 +449,7 @@ int manager_save(Manager *m) {
 
         fprintf(f,
                 "# This is private data. Do not parse.\n"
-                "OPER_STATE=%s\n", oper_state);
+                "OPER_STATE=%s\n", operstate_str);
 
         fflush(f);
 
@@ -470,3 +465,23 @@ finish:
 
         return r;
 }
+
+int manager_address_pool_acquire(Manager *m, unsigned family, unsigned prefixlen, union in_addr_union *found) {
+        AddressPool *p;
+        int r;
+
+        assert(m);
+        assert(prefixlen > 0);
+        assert(found);
+
+        LIST_FOREACH(address_pools, p, m->address_pools) {
+                if (p->family != family)
+                        continue;
+
+                r = address_pool_acquire(p, prefixlen, found);
+                if (r != 0)
+                        return r;
+        }
+
+        return 0;
+}