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_free(NetDev *netdev) {
netdev_enslave_callback *callback;
if (!netdev)
free(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;
+}
+
int netdev_get(Manager *manager, const char *name, NetDev **ret) {
NetDev *netdev;
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_getlink_handler(sd_rtnl *rtnl, sd_rtnl_message *m,
- void *userdata) {
- NetDev *netdev = userdata;
- int r;
-
- assert(netdev);
-
- if (netdev->state == NETDEV_STATE_FAILED)
- return 1;
-
- r = sd_rtnl_message_get_errno(m);
- if (r < 0) {
- log_struct_netdev(LOG_ERR, netdev,
- "MESSAGE=%s: could not get link: %s",
- netdev->name, strerror(-r),
- "ERRNO=%d", -r,
- NULL);
- return 1;
- }
-
- netdev_set_ifindex(netdev, m);
-
- return 1;
-}
-
-static int netdev_getlink(NetDev *netdev) {
- _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
- int r;
-
- assert(netdev->manager);
- assert(netdev->manager->rtnl);
- assert(netdev->name);
-
- log_debug_netdev(netdev, "requesting netdev status");
-
- r = sd_rtnl_message_new_link(netdev->manager->rtnl, &req,
- RTM_GETLINK, 0);
- if (r < 0) {
- log_error_netdev(netdev, "Could not allocate RTM_GETLINK message");
- return r;
- }
-
- r = sd_rtnl_message_append_string(req, IFLA_IFNAME, netdev->name);
- if (r < 0) {
- log_error_netdev(netdev, "Colud not append ifname to message: %s",
- strerror(-r));
- return r;
- }
-
- r = sd_rtnl_call_async(netdev->manager->rtnl, req, netdev_getlink_handler,
- netdev, 0, NULL);
- if (r < 0) {
- log_error_netdev(netdev,
- "Could not send rtnetlink message: %s", strerror(-r));
- return r;
- }
-
- return 0;
-}
-
static int netdev_create_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
NetDev *netdev = userdata;
int r;
r = sd_rtnl_message_get_errno(m);
if (r == -EEXIST)
- r = netdev_getlink(netdev);
-
- if (r < 0) {
+ log_debug_netdev(netdev, "netdev exists, using existing");
+ else if (r < 0) {
log_warning_netdev(netdev, "netdev failed: %s", strerror(-r));
netdev_enter_failed(netdev);
}
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;
uint16_t type;
const char *kind;
char *received_kind;
+ char *received_name;
int r, ifindex;
assert(netdev);
assert(message);
r = sd_rtnl_message_get_type(message, &type);
- if (r < 0)
+ if (r < 0) {
+ log_error_netdev(netdev, "Could not get rtnl message type");
return r;
+ }
- if (type != RTM_NEWLINK)
+ 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) {
+ 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) {
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");
}
if (!streq(kind, received_kind)) {
- log_error_netdev(netdev, "Received newlink with wrong KIND");
- netdev_enter_failed(netdev);
- return r;
- }
-
- 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);
+ log_error_netdev(netdev, "Received newlink with wrong KIND %s, "
+ "expected %s", received_kind, kind);
netdev_enter_failed(netdev);
return r;
}
- if (netdev->ifindex > 0) {
- if (netdev->ifindex == ifindex)
- return 0;
- else
- return -EEXIST;
- }
-
netdev->ifindex = ifindex;
netdev_enter_ready(netdev);
}
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);
if (!netdev)
return log_oom();
+ netdev->n_ref = 1;
netdev->manager = manager;
netdev->state = _NETDEV_STATE_INVALID;
netdev->kind = _NETDEV_KIND_INVALID;
return r;
}
+ log_debug_netdev(netdev, "loaded %s", netdev_kind_to_string(netdev->kind));
+
netdev = NULL;
return 0;
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) {
~ianmdlvl / elogind.git / blobdiff