X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fnetwork%2Fnetworkd-netdev.c;h=f742e391ce5b3cd1e790b62eb945b2292f296726;hp=c48c96a5171c82f1b3dbc5d533a175cff9a9453d;hb=5e273efec5fcf60ddb55e6bc0aaa850cb1be86c6;hpb=c3ab23898f5794ab0f0705475cbfc27f8e9163a6

diff --git a/src/network/networkd-netdev.c b/src/network/networkd-netdev.c
index c48c96a51..f742e391c 100644
--- a/src/network/networkd-netdev.c
+++ b/src/network/networkd-netdev.c
@@ -20,31 +20,63 @@
 ***/
 
 #include "networkd.h"
-#include "net-util.h"
+#include "network-internal.h"
 #include "path-util.h"
 #include "conf-files.h"
 #include "conf-parser.h"
 #include "list.h"
 
-static const char* const netdev_kind_table[] = {
+#define VLANID_MAX 4094
+
+static const char* const netdev_kind_table[_NETDEV_KIND_MAX] = {
         [NETDEV_KIND_BRIDGE] = "bridge",
         [NETDEV_KIND_BOND] = "bond",
         [NETDEV_KIND_VLAN] = "vlan",
+        [NETDEV_KIND_MACVLAN] = "macvlan",
+};
+
+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(netdev_kind, NetdevKind);
-DEFINE_CONFIG_PARSE_ENUM(config_parse_netdev_kind, netdev_kind, NetdevKind, "Failed to parse netdev kind");
+DEFINE_STRING_TABLE_LOOKUP(macvlan_mode, MacVlanMode);
+DEFINE_CONFIG_PARSE_ENUM(config_parse_macvlan_mode, macvlan_mode, MacVlanMode, "Failed to parse macvlan mode");
 
-void netdev_free(Netdev *netdev) {
+static void netdev_cancel_callbacks(NetDev *netdev) {
+        _cleanup_rtnl_message_unref_ sd_rtnl_message *m = NULL;
         netdev_enslave_callback *callback;
 
         if (!netdev)
                 return;
 
+        rtnl_message_new_synthetic_error(-ENODEV, 0, &m);
+
         while ((callback = netdev->callbacks)) {
+                if (m) {
+                        assert(callback->link);
+                        assert(callback->callback);
+                        assert(netdev->manager);
+                        assert(netdev->manager->rtnl);
+
+                        callback->callback(netdev->manager->rtnl, m, link);
+                }
+
                 LIST_REMOVE(callbacks, netdev->callbacks, callback);
                 free(callback);
         }
+}
+
+static void netdev_free(NetDev *netdev) {
+        if (!netdev)
+                return;
+
+        netdev_cancel_callbacks(netdev);
 
         if (netdev->name)
                 hashmap_remove(netdev->manager->netdevs, netdev->name);
@@ -54,11 +86,45 @@ void netdev_free(Netdev *netdev) {
         free(netdev->description);
         free(netdev->name);
 
+        condition_free_list(netdev->match_host);
+        condition_free_list(netdev->match_virt);
+        condition_free_list(netdev->match_kernel);
+        condition_free_list(netdev->match_arch);
+
         free(netdev);
 }
 
-int netdev_get(Manager *manager, const char *name, Netdev **ret) {
-        Netdev *netdev;
+NetDev *netdev_unref(NetDev *netdev) {
+        if (netdev && (-- netdev->n_ref <= 0))
+                netdev_free(netdev);
+
+        return NULL;
+}
+
+NetDev *netdev_ref(NetDev *netdev) {
+        if (netdev)
+                assert_se(++ netdev->n_ref >= 2);
+
+        return netdev;
+}
+
+void netdev_drop(NetDev *netdev) {
+        if (!netdev || netdev->state == NETDEV_STATE_LINGER)
+                return;
+
+        netdev->state = NETDEV_STATE_LINGER;
+
+        log_debug_netdev(netdev, "netdev removed");
+
+        netdev_cancel_callbacks(netdev);
+
+        netdev_unref(netdev);
+
+        return;
+}
+
+int netdev_get(Manager *manager, const char *name, NetDev **ret) {
+        NetDev *netdev;
 
         assert(manager);
         assert(name);
@@ -75,22 +141,25 @@ int netdev_get(Manager *manager, const char *name, Netdev **ret) {
         return 0;
 }
 
-static int netdev_enter_failed(Netdev *netdev) {
+static int netdev_enter_failed(NetDev *netdev) {
         netdev->state = NETDEV_STATE_FAILED;
 
         return 0;
 }
 
-static int netdev_enslave_ready(Netdev *netdev, Link* link, sd_rtnl_message_handler_t callback) {
-        _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req = NULL;
+static int netdev_enslave_ready(NetDev *netdev, Link* link, sd_rtnl_message_handler_t callback) {
+        _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
         int r;
 
         assert(netdev);
         assert(netdev->state == NETDEV_STATE_READY);
+        assert(netdev->manager);
+        assert(netdev->manager->rtnl);
         assert(link);
         assert(callback);
 
-        r = sd_rtnl_message_link_new(RTM_SETLINK, link->ifindex, &req);
+        r = sd_rtnl_message_new_link(netdev->manager->rtnl, &req,
+                                     RTM_SETLINK, link->ifindex);
         if (r < 0) {
                 log_error_netdev(netdev,
                                  "Could not allocate RTM_SETLINK message: %s",
@@ -119,35 +188,39 @@ static int netdev_enslave_ready(Netdev *netdev, Link* link, sd_rtnl_message_hand
         return 0;
 }
 
-static int netdev_enter_ready(Netdev *netdev) {
+static int netdev_enter_ready(NetDev *netdev) {
         netdev_enslave_callback *callback;
 
         assert(netdev);
         assert(netdev->name);
 
+        if (netdev->state != NETDEV_STATE_CREATING)
+                return 0;
+
         netdev->state = NETDEV_STATE_READY;
 
         log_info_netdev(netdev, "netdev ready");
 
         LIST_FOREACH(callbacks, callback, netdev->callbacks) {
-                /* enslave the links that were attempted to be enslaved befor the
+                /* enslave the links that were attempted to be enslaved before the
                  * link was ready */
                 netdev_enslave_ready(netdev, callback->link, callback->callback);
         }
 
         return 0;
 }
-
 static int netdev_create_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
-        Netdev *netdev = userdata;
-        int r, ifindex;
+        NetDev *netdev = userdata;
+        int r;
 
         assert(netdev->state != _NETDEV_STATE_INVALID);
 
         r = sd_rtnl_message_get_errno(m);
-        if (r < 0) {
-                log_warning_netdev(netdev, "netdev failed: %s", strerror(-r));
-                netdev_enter_failed(netdev);
+        if (r == -EEXIST)
+                log_debug_netdev(netdev, "netdev exists, using existing");
+        else if (r < 0) {
+                log_warning_netdev(netdev, "netdev could not be greated: %s", strerror(-r));
+                netdev_drop(netdev);
 
                 return 1;
         }
@@ -155,18 +228,19 @@ static int netdev_create_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userda
         return 1;
 }
 
-static int netdev_create(Netdev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
-        _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req = NULL;
+static int netdev_create(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
+        _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
         const char *kind;
         int r;
 
         assert(netdev);
-        assert(!(netdev->kind == NETDEV_KIND_VLAN) || (link && callback && netdev->vlanid >= 0));
+        assert(!(netdev->kind == NETDEV_KIND_VLAN || netdev->kind == NETDEV_KIND_MACVLAN) ||
+               (link && callback));
         assert(netdev->name);
         assert(netdev->manager);
         assert(netdev->manager->rtnl);
 
-        r = sd_rtnl_message_link_new(RTM_NEWLINK, 0, &req);
+        r = sd_rtnl_message_new_link(netdev->manager->rtnl, &req, RTM_NEWLINK, 0);
         if (r < 0) {
                 log_error_netdev(netdev,
                                  "Could not allocate RTM_NEWLINK message: %s",
@@ -206,23 +280,15 @@ static int netdev_create(Netdev *netdev, Link *link, sd_rtnl_message_handler_t c
                 return -EINVAL;
         }
 
-        r = sd_rtnl_message_append_string(req, IFLA_INFO_KIND, kind);
+        r = sd_rtnl_message_open_container_union(req, IFLA_INFO_DATA, kind);
         if (r < 0) {
                 log_error_netdev(netdev,
-                                 "Could not append IFLA_INFO_KIND attribute: %s",
-                                 strerror(-r));
+                                 "Could not open IFLA_INFO_DATA container: %s",
+                                  strerror(-r));
                 return r;
         }
 
-        if (netdev->vlanid >= 0) {
-                r = sd_rtnl_message_open_container(req, IFLA_INFO_DATA);
-                if (r < 0) {
-                        log_error_netdev(netdev,
-                                         "Could not open IFLA_INFO_DATA container: %s",
-                                         strerror(-r));
-                        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,
@@ -230,16 +296,26 @@ static int netdev_create(Netdev *netdev, Link *link, sd_rtnl_message_handler_t c
                                          strerror(-r));
                         return r;
                 }
+        }
 
-                r = sd_rtnl_message_close_container(req);
-                if (r < 0) {
-                        log_error_netdev(netdev,
-                                         "Could not close IFLA_INFO_DATA container %s",
-                                         strerror(-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,
+                                 "Could not close IFLA_INFO_DATA container %s",
+                                 strerror(-r));
+                return r;
+        }
+
         r = sd_rtnl_message_close_container(req);
         if (r < 0) {
                 log_error_netdev(netdev,
@@ -265,12 +341,16 @@ static int netdev_create(Netdev *netdev, Link *link, sd_rtnl_message_handler_t c
         return 0;
 }
 
-int netdev_enslave(Netdev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
-        if (netdev->kind == NETDEV_KIND_VLAN)
+int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
+        int r;
+
+        if (netdev->kind == NETDEV_KIND_VLAN || netdev->kind == NETDEV_KIND_MACVLAN)
                 return netdev_create(netdev, link, callback);
 
         if (netdev->state == NETDEV_STATE_READY) {
-                netdev_enslave_ready(netdev, link, callback);
+                r = netdev_enslave_ready(netdev, link, callback);
+                if (r < 0)
+                        return r;
         } else {
                 /* the netdev is not yet read, save this request for when it is*/
                 netdev_enslave_callback *cb;
@@ -288,15 +368,93 @@ int netdev_enslave(Netdev *netdev, Link *link, sd_rtnl_message_handler_t callbac
         return 0;
 }
 
-int netdev_set_ifindex(Netdev *netdev, int ifindex) {
+int netdev_set_ifindex(NetDev *netdev, sd_rtnl_message *message) {
+        uint16_t type;
+        const char *kind;
+        char *received_kind;
+        char *received_name;
+        int r, ifindex;
+
         assert(netdev);
-        assert(ifindex > 0);
+        assert(message);
+
+        r = sd_rtnl_message_get_type(message, &type);
+        if (r < 0) {
+                log_error_netdev(netdev, "Could not get rtnl message type");
+                return r;
+        }
+
+        if (type != RTM_NEWLINK) {
+                log_error_netdev(netdev, "Can not set ifindex from unexpected rtnl message type");
+                return -EINVAL;
+        }
+
+        r = sd_rtnl_message_link_get_ifindex(message, &ifindex);
+        if (r < 0) {
+                log_error_netdev(netdev, "Could not get ifindex: %s", strerror(-r));
+                netdev_enter_failed(netdev);
+                return r;
+        } else if (ifindex <= 0) {
+                log_error_netdev(netdev, "Got invalid ifindex: %d", ifindex);
+                netdev_enter_failed(netdev);
+                return r;
+        }
+
 
         if (netdev->ifindex > 0) {
-                if (netdev->ifindex == ifindex)
-                        return 0;
-                else
+                if (netdev->ifindex != ifindex) {
+                        log_error_netdev(netdev, "Could not set ifindex to %d, already set to %d",
+                                         ifindex, netdev->ifindex);
+                        netdev_enter_failed(netdev);
                         return -EEXIST;
+                } else
+                        /* ifindex already set to the same for this netdev */
+                        return 0;
+        }
+
+        r = sd_rtnl_message_read_string(message, IFLA_IFNAME, &received_name);
+        if (r < 0) {
+                log_error_netdev(netdev, "Could not get IFNAME");
+                return r;
+        }
+
+        if (!streq(netdev->name, received_name)) {
+                log_error_netdev(netdev, "Received newlink with wrong IFNAME %s",
+                                 received_name);
+                netdev_enter_failed(netdev);
+                return r;
+        }
+
+        r = sd_rtnl_message_enter_container(message, IFLA_LINKINFO);
+        if (r < 0) {
+                log_error_netdev(netdev, "Could not get LINKINFO");
+                return r;
+        }
+
+        r = sd_rtnl_message_read_string(message, IFLA_INFO_KIND, &received_kind);
+        if (r < 0) {
+                log_error_netdev(netdev, "Could not get KIND");
+                return r;
+        }
+
+        r = sd_rtnl_message_exit_container(message);
+        if (r < 0) {
+                log_error_netdev(netdev, "Could not exit container");
+                return r;
+        }
+
+        kind = netdev_kind_to_string(netdev->kind);
+        if (!kind) {
+                log_error_netdev(netdev, "Could not get kind");
+                netdev_enter_failed(netdev);
+                return -EINVAL;
+        }
+
+        if (!streq(kind, received_kind)) {
+                log_error_netdev(netdev, "Received newlink with wrong KIND %s, "
+                                 "expected %s", received_kind, kind);
+                netdev_enter_failed(netdev);
+                return r;
         }
 
         netdev->ifindex = ifindex;
@@ -307,49 +465,70 @@ int netdev_set_ifindex(Netdev *netdev, int ifindex) {
 }
 
 static int netdev_load_one(Manager *manager, const char *filename) {
-        _cleanup_netdev_free_ Netdev *netdev = NULL;
+        _cleanup_netdev_unref_ NetDev *netdev = NULL;
         _cleanup_fclose_ FILE *file = NULL;
         int r;
 
         assert(manager);
         assert(filename);
 
+        if (null_or_empty_path(filename)) {
+                log_debug("skipping empty file: %s", filename);
+                return 0;
+        }
+
         file = fopen(filename, "re");
         if (!file) {
                 if (errno == ENOENT)
                         return 0;
                 else
-                        return errno;
+                        return -errno;
         }
 
-        netdev = new0(Netdev, 1);
+        netdev = new0(NetDev, 1);
         if (!netdev)
                 return log_oom();
 
+        netdev->n_ref = 1;
         netdev->manager = manager;
         netdev->state = _NETDEV_STATE_INVALID;
         netdev->kind = _NETDEV_KIND_INVALID;
-        netdev->vlanid = -1;
+        netdev->macvlan_mode = _NETDEV_MACVLAN_MODE_INVALID;
+        netdev->vlanid = VLANID_MAX + 1;
 
-        r = config_parse(NULL, filename, file, "Netdev\0VLAN\0", config_item_perf_lookup,
-                        (void*) network_gperf_lookup, false, false, netdev);
+        r = config_parse(NULL, filename, file, "Match\0NetDev\0VLAN\0MACVLAN\0",
+                         config_item_perf_lookup, (void*) network_netdev_gperf_lookup,
+                         false, false, netdev);
         if (r < 0) {
                 log_warning("Could not parse config file %s: %s", filename, strerror(-r));
                 return r;
         }
 
         if (netdev->kind == _NETDEV_KIND_INVALID) {
-                log_warning("Netdev without Kind configured in %s. Ignoring", filename);
+                log_warning("NetDev without Kind configured in %s. Ignoring", filename);
                 return 0;
         }
 
         if (!netdev->name) {
-                log_warning("Netdev without Name configured in %s. Ignoring", filename);
+                log_warning("NetDev without Name configured in %s. Ignoring", filename);
+                return 0;
+        }
+
+        if (netdev->kind == NETDEV_KIND_VLAN && netdev->vlanid > VLANID_MAX) {
+                log_warning("VLAN without valid Id configured in %s. Ignoring", filename);
                 return 0;
         }
 
-        if (netdev->kind == NETDEV_KIND_VLAN && netdev->vlanid < 0) {
-                log_warning("VLAN without Id configured in %s. Ignoring", filename);
+        if (netdev->kind != NETDEV_KIND_VLAN && netdev->vlanid <= VLANID_MAX) {
+                log_warning("VLAN Id configured for a %s in %s. Ignoring",
+                            netdev_kind_to_string(netdev->kind), filename);
+                return 0;
+        }
+
+        if (netdev->kind != NETDEV_KIND_MACVLAN &&
+            netdev->macvlan_mode != _NETDEV_MACVLAN_MODE_INVALID) {
+                log_warning("MACVLAN Mode configured for a %s in %s. Ignoring",
+                            netdev_kind_to_string(netdev->kind), filename);
                 return 0;
         }
 
@@ -357,32 +536,41 @@ static int netdev_load_one(Manager *manager, const char *filename) {
         if (!netdev->filename)
                 return log_oom();
 
+        if (net_match_config(NULL, NULL, NULL, NULL, NULL,
+                             netdev->match_host, netdev->match_virt,
+                             netdev->match_kernel, netdev->match_arch,
+                             NULL, NULL, NULL, NULL, NULL, NULL) <= 0)
+                return 0;
+
         r = hashmap_put(netdev->manager->netdevs, netdev->name, netdev);
         if (r < 0)
                 return r;
 
         LIST_HEAD_INIT(netdev->callbacks);
 
-        if (netdev->kind != NETDEV_KIND_VLAN) {
+        if (netdev->kind != NETDEV_KIND_VLAN &&
+            netdev->kind != NETDEV_KIND_MACVLAN) {
                 r = netdev_create(netdev, NULL, NULL);
                 if (r < 0)
                         return r;
         }
 
+        log_debug_netdev(netdev, "loaded %s", netdev_kind_to_string(netdev->kind));
+
         netdev = NULL;
 
         return 0;
 }
 
 int netdev_load(Manager *manager) {
-        Netdev *netdev;
+        NetDev *netdev;
         char **files, **f;
         int r;
 
         assert(manager);
 
         while ((netdev = hashmap_first(manager->netdevs)))
-                netdev_free(netdev);
+                netdev_unref(netdev);
 
         r = conf_files_list_strv(&files, ".netdev", NULL, network_dirs);
         if (r < 0) {