networkd: netdev - drop the link callbacks after calling them once

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

diff --git a/src/network/networkd-netdev.c b/src/network/networkd-netdev.c
index 20917e334b3092513048b79eed30d7af58fa0549..eaa8bede7a55b7162fae513d9a26aea3ded6d0cc 100644 (file)
--- a/src/network/networkd-netdev.c
+++ b/src/network/networkd-netdev.c
@@ -29,8 +29,6 @@
 #include "list.h"
 #include "siphash24.h"
 
-#define VLANID_MAX 4094
-
 static const char* const netdev_kind_table[_NETDEV_KIND_MAX] = {
         [NETDEV_KIND_BRIDGE] = "bridge",
         [NETDEV_KIND_BOND] = "bond",
@@ -41,22 +39,13 @@ static const char* const netdev_kind_table[_NETDEV_KIND_MAX] = {
         [NETDEV_KIND_GRE] = "gre",
         [NETDEV_KIND_SIT] = "sit",
         [NETDEV_KIND_VETH] = "veth",
-        [NETDEV_KIND_VTI] = "vti"
+        [NETDEV_KIND_VTI] = "vti",
+        [NETDEV_KIND_DUMMY] = "dummy",
 };
 
 DEFINE_STRING_TABLE_LOOKUP(netdev_kind, NetDevKind);
 DEFINE_CONFIG_PARSE_ENUM(config_parse_netdev_kind, netdev_kind, NetDevKind, "Failed to parse netdev kind");
 
-static const char* const macvlan_mode_table[_NETDEV_MACVLAN_MODE_MAX] = {
-        [NETDEV_MACVLAN_MODE_PRIVATE] = "private",
-        [NETDEV_MACVLAN_MODE_VEPA] = "vepa",
-        [NETDEV_MACVLAN_MODE_BRIDGE] = "bridge",
-        [NETDEV_MACVLAN_MODE_PASSTHRU] = "passthru",
-};
-
-DEFINE_STRING_TABLE_LOOKUP(macvlan_mode, MacVlanMode);
-DEFINE_CONFIG_PARSE_ENUM(config_parse_macvlan_mode, macvlan_mode, MacVlanMode, "Failed to parse macvlan mode");
-
 static void netdev_cancel_callbacks(NetDev *netdev) {
         _cleanup_rtnl_message_unref_ sd_rtnl_message *m = NULL;
         netdev_enslave_callback *callback;
@@ -195,13 +184,16 @@ static int netdev_enslave_ready(NetDev *netdev, Link* link, sd_rtnl_message_hand
                 return r;
         }
 
+        link_ref(link);
+
         log_debug_netdev(netdev, "enslaving link '%s'", link->ifname);
 
         return 0;
 }
 
 static int netdev_enter_ready(NetDev *netdev) {
-        netdev_enslave_callback *callback;
+        netdev_enslave_callback *callback, *callback_next;
+        int r;
 
         assert(netdev);
         assert(netdev->ifname);
@@ -213,10 +205,16 @@ static int netdev_enter_ready(NetDev *netdev) {
 
         log_info_netdev(netdev, "netdev ready");
 
-        LIST_FOREACH(callbacks, callback, netdev->callbacks) {
+        LIST_FOREACH_SAFE(callbacks, callback, callback_next, netdev->callbacks) {
                 /* enslave the links that were attempted to be enslaved before the
                  * link was ready */
-                netdev_enslave_ready(netdev, callback->link, callback->callback);
+                r = netdev_enslave_ready(netdev, callback->link, callback->callback);
+                if (r < 0)
+                        return r;
+
+                LIST_REMOVE(callbacks, netdev->callbacks, callback);
+                link_unref(callback->link);
+                free(callback);
         }
 
         return 0;
@@ -270,14 +268,12 @@ int config_parse_tunnel_address(const char *unit,
        return 0;
 }
 
-static int netdev_create(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
+static int netdev_create(NetDev *netdev) {
         _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
         const char *kind;
         int r;
 
         assert(netdev);
-        assert(!(netdev->kind == NETDEV_KIND_VLAN || netdev->kind == NETDEV_KIND_MACVLAN) ||
-               (link && callback));
         assert(netdev->ifname);
         assert(netdev->manager);
         assert(netdev->manager->rtnl);
@@ -290,16 +286,6 @@ static int netdev_create(NetDev *netdev, Link *link, sd_rtnl_message_handler_t c
                 return r;
         }
 
-        if (link) {
-                r = sd_rtnl_message_append_u32(req, IFLA_LINK, link->ifindex);
-                if (r < 0) {
-                        log_error_netdev(netdev,
-                                         "Could not append IFLA_LINK attribute: %s",
-                                         strerror(-r));
-                        return r;
-                }
-        }
-
         r = sd_rtnl_message_append_string(req, IFLA_IFNAME, netdev->ifname);
         if (r < 0) {
                 log_error_netdev(netdev,
@@ -350,26 +336,6 @@ static int netdev_create(NetDev *netdev, Link *link, sd_rtnl_message_handler_t c
                 return r;
         }
 
-        if (netdev->vlanid <= VLANID_MAX) {
-                r = sd_rtnl_message_append_u16(req, IFLA_VLAN_ID, netdev->vlanid);
-                if (r < 0) {
-                        log_error_netdev(netdev,
-                                         "Could not append IFLA_VLAN_ID attribute: %s",
-                                         strerror(-r));
-                        return r;
-                }
-        }
-
-        if (netdev->macvlan_mode != _NETDEV_MACVLAN_MODE_INVALID) {
-        r = sd_rtnl_message_append_u32(req, IFLA_MACVLAN_MODE, netdev->macvlan_mode);
-        if (r < 0) {
-                log_error_netdev(netdev,
-                                 "Could not append IFLA_MACVLAN_MODE attribute: %s",
-                                 strerror(-r));
-                        return r;
-                }
-        }
-
         r = sd_rtnl_message_close_container(req);
         if (r < 0) {
                 log_error_netdev(netdev,
@@ -386,18 +352,15 @@ static int netdev_create(NetDev *netdev, Link *link, sd_rtnl_message_handler_t c
                 return r;
         }
 
-        if (link)
-                r = sd_rtnl_call_async(netdev->manager->rtnl, req, callback, link, 0, NULL);
-        else {
-                r = sd_rtnl_call_async(netdev->manager->rtnl, req, &netdev_create_handler, netdev, 0, NULL);
-
-                netdev_ref(netdev);
-        } if (r < 0) {
+        r = sd_rtnl_call_async(netdev->manager->rtnl, req, &netdev_create_handler, netdev, 0, NULL);
+        if (r < 0) {
                 log_error_netdev(netdev,
                                  "Could not send rtnetlink message: %s", strerror(-r));
                 return r;
         }
 
+        netdev_ref(netdev);
+
         log_debug_netdev(netdev, "creating netdev");
 
         netdev->state = NETDEV_STATE_CREATING;
@@ -411,8 +374,9 @@ int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callbac
 
         switch(netdev->kind) {
         case NETDEV_KIND_VLAN:
+                return netdev_create_vlan(netdev, link, callback);
         case NETDEV_KIND_MACVLAN:
-                return netdev_create(netdev, link, callback);
+                return netdev_create_macvlan(netdev, link, callback);
         case NETDEV_KIND_VXLAN:
                 return netdev_create_vxlan(netdev, link, callback);
         case NETDEV_KIND_IPIP:
@@ -438,6 +402,7 @@ int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callbac
 
                 cb->callback = callback;
                 cb->link = link;
+                link_ref(link);
 
                 LIST_PREPEND(callbacks, netdev->callbacks, cb);
         }
@@ -717,10 +682,16 @@ static int netdev_load_one(Manager *manager, const char *filename) {
                 if (r < 0)
                         return r;
 
+                break;
+        case NETDEV_KIND_DUMMY:
+                r = netdev_create_dummy(netdev, netdev_create_handler);
+                if (r < 0)
+                        return r;
+
                 break;
         case NETDEV_KIND_BRIDGE:
         case NETDEV_KIND_BOND:
-                r = netdev_create(netdev, NULL, NULL);
+                r = netdev_create(netdev);
                 if (r < 0)
                         return r;
                 break;