--- /dev/null
+/*
+ * netifd - network interface daemon
+ * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2013 Jo-Philipp Wich <jow@openwrt.org>
+ * Copyright (C) 2017 Matthias Schiffer <mschiffer@universe-factory.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <assert.h>
+#include <errno.h>
+#include <net/ethernet.h>
+
+#ifdef linux
+#include <netinet/ether.h>
+#endif
+
+#include "netifd.h"
+#include "device.h"
+#include "interface.h"
+#include "system.h"
+
+enum {
+ VETH_ATTR_MACADDR,
+ VETH_ATTR_PEER_NAME,
+ VETH_ATTR_PEER_MACADDR,
+ __VETH_ATTR_MAX
+};
+
+static const struct blobmsg_policy veth_attrs[__VETH_ATTR_MAX] = {
+ [VETH_ATTR_MACADDR] = { "macaddr", BLOBMSG_TYPE_STRING },
+ [VETH_ATTR_PEER_NAME] = { "peer_name", BLOBMSG_TYPE_STRING },
+ [VETH_ATTR_PEER_MACADDR] = { "peer_macaddr", BLOBMSG_TYPE_STRING },
+};
+
+static const struct uci_blob_param_list veth_attr_list = {
+ .n_params = __VETH_ATTR_MAX,
+ .params = veth_attrs,
+
+ .n_next = 1,
+ .next = { &device_attr_list },
+};
+
+struct veth {
+ struct device dev;
+
+ device_state_cb set_state;
+
+ struct blob_attr *config_data;
+ struct veth_config config;
+};
+
+static int
+veth_set_down(struct veth *veth)
+{
+ veth->set_state(&veth->dev, false);
+ system_veth_del(&veth->dev);
+
+ return 0;
+}
+
+static int
+veth_set_up(struct veth *veth)
+{
+ int ret;
+
+ ret = system_veth_add(&veth->dev, &veth->config);
+ if (ret < 0)
+ return ret;
+
+ ret = veth->set_state(&veth->dev, true);
+ if (ret)
+ goto delete;
+
+ return 0;
+
+delete:
+ system_veth_del(&veth->dev);
+ return ret;
+}
+
+static int
+veth_set_state(struct device *dev, bool up)
+{
+ struct veth *veth;
+
+ D(SYSTEM, "veth_set_state(%s, %u)\n", dev->ifname, up);
+
+ veth = container_of(dev, struct veth, dev);
+ if (up)
+ return veth_set_up(veth);
+ else
+ return veth_set_down(veth);
+}
+
+static void
+veth_free(struct device *dev)
+{
+ struct veth *veth;
+
+ veth = container_of(dev, struct veth, dev);
+ free(veth->config_data);
+ free(veth);
+}
+
+static void
+veth_dump_info(struct device *dev, struct blob_buf *b)
+{
+ struct veth *veth;
+
+ veth = container_of(dev, struct veth, dev);
+ if (veth->config.flags & VETH_OPT_PEER_NAME)
+ blobmsg_add_string(b, "peer", veth->config.peer_name);
+ system_if_dump_info(dev, b);
+}
+
+static void
+veth_config_init(struct device *dev)
+{
+ device_set_present(dev, true);
+}
+
+static void
+veth_apply_settings(struct veth *veth, struct blob_attr **tb)
+{
+ struct veth_config *cfg = &veth->config;
+ struct blob_attr *cur;
+ struct ether_addr *ea;
+
+ cfg->flags = 0;
+
+ if ((cur = tb[VETH_ATTR_MACADDR]))
+ {
+ ea = ether_aton(blobmsg_data(cur));
+ if (ea) {
+ memcpy(cfg->macaddr, ea, 6);
+ cfg->flags |= VETH_OPT_MACADDR;
+ }
+ }
+
+ if ((cur = tb[VETH_ATTR_PEER_NAME]))
+ {
+ strncpy(cfg->peer_name, blobmsg_get_string(cur), sizeof(cfg->peer_name)-1);
+ cfg->flags |= VETH_OPT_PEER_NAME;
+ }
+
+ if ((cur = tb[VETH_ATTR_PEER_MACADDR]))
+ {
+ ea = ether_aton(blobmsg_data(cur));
+ if (ea) {
+ memcpy(cfg->peer_macaddr, ea, 6);
+ cfg->flags |= VETH_OPT_PEER_MACADDR;
+ }
+ }
+}
+
+static enum dev_change_type
+veth_reload(struct device *dev, struct blob_attr *attr)
+{
+ struct blob_attr *tb_dev[__DEV_ATTR_MAX];
+ struct blob_attr *tb_mv[__VETH_ATTR_MAX];
+ enum dev_change_type ret = DEV_CONFIG_APPLIED;
+ struct veth *veth;
+
+ veth = container_of(dev, struct veth, dev);
+ attr = blob_memdup(attr);
+
+ blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, tb_dev,
+ blob_data(attr), blob_len(attr));
+ blobmsg_parse(veth_attrs, __VETH_ATTR_MAX, tb_mv,
+ blob_data(attr), blob_len(attr));
+
+ device_init_settings(dev, tb_dev);
+ veth_apply_settings(veth, tb_mv);
+
+ if (veth->config_data) {
+ struct blob_attr *otb_dev[__DEV_ATTR_MAX];
+ struct blob_attr *otb_mv[__VETH_ATTR_MAX];
+
+ blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, otb_dev,
+ blob_data(veth->config_data), blob_len(veth->config_data));
+
+ if (uci_blob_diff(tb_dev, otb_dev, &device_attr_list, NULL))
+ ret = DEV_CONFIG_RESTART;
+
+ blobmsg_parse(veth_attrs, __VETH_ATTR_MAX, otb_mv,
+ blob_data(veth->config_data), blob_len(veth->config_data));
+
+ if (uci_blob_diff(tb_mv, otb_mv, &veth_attr_list, NULL))
+ ret = DEV_CONFIG_RESTART;
+
+ veth_config_init(dev);
+ }
+
+ free(veth->config_data);
+ veth->config_data = attr;
+ return ret;
+}
+
+static struct device *
+veth_create(const char *name, struct device_type *devtype,
+ struct blob_attr *attr)
+{
+ struct veth *veth;
+ struct device *dev = NULL;
+
+ veth = calloc(1, sizeof(*veth));
+ if (!veth)
+ return NULL;
+
+ dev = &veth->dev;
+ device_init(dev, devtype, name);
+ dev->config_pending = true;
+
+ veth->set_state = dev->set_state;
+ dev->set_state = veth_set_state;
+
+ dev->hotplug_ops = NULL;
+
+ veth_reload(dev, attr);
+
+ return dev;
+}
+
+static struct device_type veth_device_type = {
+ .name = "veth",
+ .config_params = &veth_attr_list,
+ .create = veth_create,
+ .config_init = veth_config_init,
+ .reload = veth_reload,
+ .free = veth_free,
+ .dump_info = veth_dump_info,
+};
+
+static void __init veth_device_type_init(void)
+{
+ device_type_add(&veth_device_type);
+}
projects / project / netifd.git / blobdiff