networkd: add address pool support

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

diff --git a/src/network/networkd-manager.c b/src/network/networkd-manager.c
index 2e3b4bb885e010249ca56c582a28e6b1c5415ca5..5cc88723e5215265ad0dc98638fc2483fb4ecd20 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"
@@ -76,6 +75,33 @@ static int setup_signals(Manager *m) {
         return 0;
 }
 
+static int setup_default_address_pool(Manager *m) {
+        AddressPool *p;
+        int r;
+
+        assert(m);
+
+        /* Add in the well-known private address ranges. */
+
+        r = address_pool_new_from_string(m, &p, AF_INET6, "fc00::", 7);
+        if (r < 0)
+                return r;
+
+        r = address_pool_new_from_string(m, &p, AF_INET, "192.168.0.0", 16);
+        if (r < 0)
+                return r;
+
+        r = address_pool_new_from_string(m, &p, AF_INET, "172.16.0.0", 12);
+        if (r < 0)
+                return r;
+
+        r = address_pool_new_from_string(m, &p, AF_INET, "10.0.0.0", 8);
+        if (r < 0)
+                return r;
+
+        return 0;
+}
+
 int manager_new(Manager **ret) {
         _cleanup_manager_free_ Manager *m = NULL;
         int r;
@@ -84,7 +110,7 @@ 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;
 
@@ -120,10 +146,6 @@ 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 +156,10 @@ 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 +170,13 @@ 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 +196,9 @@ 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);
@@ -424,8 +453,8 @@ 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 +464,12 @@ 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 +479,7 @@ 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 +495,23 @@ 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;
+}