networkd: introduce vxlan

This patch enables netwokd to create vxlan

Changes:
Added:
	1. File networkd networkd-vxlan.c
	2. to netdev
	    bool learning
	    struct in_addr group
	    uint64_t vxlanid;
	3. VXLAN subsection and config
	   parameters

1 files changed, 17 insertions, 0 deletions

diff --git a/src/network/networkd-network.c b/src/network/networkd-network.c
index 4e38173140..45c1ab0f4c 100644
--- a/src/network/networkd-network.c
+++ b/src/network/networkd-network.c
@@ -69,6 +69,10 @@ static int network_load_one(Manager *manager, const char *filename) {
         if (!network->macvlans)
                 return log_oom();
 
+        network->vxlans = hashmap_new(uint64_hash_func, uint64_compare_func);
+        if (!network->vxlans)
+                return log_oom();
+
         network->addresses_by_section = hashmap_new(uint64_hash_func, uint64_compare_func);
         if (!network->addresses_by_section)
                 return log_oom();
@@ -183,6 +187,10 @@ void network_free(Network *network) {
                 netdev_unref(netdev);
         hashmap_free(network->macvlans);
 
+        HASHMAP_FOREACH(netdev, network->vxlans, i)
+                netdev_unref(netdev);
+        hashmap_free(network->vxlans);
+
         while ((route = network->static_routes))
                 route_free(route);
 
@@ -326,6 +334,15 @@ int config_parse_netdev(const char *unit,
                 }
 
                 break;
+        case NETDEV_KIND_VXLAN:
+                r = hashmap_put(network->vxlans, netdev->ifname, netdev);
+                if (r < 0) {
+                        log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+                                   "Can not add VXLAN to network: %s", rvalue);
+                        return 0;
+                }
+
+                break;
         default:
                 assert_not_reached("Can not parse NetDev");
         }