2 * lxc: linux Container library
4 * (C) Copyright IBM Corp. 2007, 2008
7 * Daniel Lezcano <daniel.lezcano at free.fr>
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #ifndef __LXC_NETWORK_H
24 #define __LXC_NETWORK_H
29 #include <arpa/inet.h>
30 #include <sys/socket.h>
49 * Defines the structure to configure an ipv4 address
50 * @address : ipv4 address
51 * @broadcast : ipv4 broadcast address
52 * @mask : network mask
65 * Defines the structure to configure an ipv6 address
66 * @flags : set the address up
67 * @address : ipv6 address
68 * @broadcast : ipv6 broadcast address
69 * @mask : network mask
73 struct in6_addr mcast
;
74 struct in6_addr acast
;
82 /* Contains information about the host side veth device.
83 * @pair : Name of the host side veth device.
84 * If the user requested that the host veth device be created with a
85 * specific names this field will be set. If this field is set @veth1
87 * @veth1 : Name of the host side veth device.
88 * If the user did not request that the host veth device be created
89 * with a specific name this field will be set. If this field is set
91 * @ifindex : Ifindex of the network device.
106 struct ifla_macvlan
{
107 int mode
; /* private, vepa, bridge, passthru */
110 /* Contains information about the physical network device as seen from the host.
111 * @ifindex : The ifindex of the physical network device in the host's network
119 struct ifla_macvlan macvlan_attr
;
120 struct ifla_phys phys_attr
;
121 struct ifla_veth veth_attr
;
122 struct ifla_vlan vlan_attr
;
126 * Defines a structure to configure a network device
127 * @idx : network counter
128 * @ifindex : ifindex of the network device
129 * Note that this is the ifindex of the network device in
130 * the container's network namespace. If the network device
131 * consists of a pair of network devices (e.g. veth pairs
132 * attached to a network bridge) then this index cannot be
133 * used to identify or modify the host veth device. See
134 * struct ifla_veth for the host side information.
135 * @type : network type (veth, macvlan, vlan, ...)
136 * @flags : flag of the network device (IFF_UP, ... )
137 * @link : lxc.net.[i].link, name of bridge or host iface to attach
139 * @name : lxc.net.[i].name, name of iface on the container side
140 * @hwaddr : mac address
141 * @mtu : maximum transmission unit
142 * @priv : information specific to the specificed network type
143 * Note that this is a union so whether accessing a struct
144 * is possible is dependent on the network type.
145 * @ipv4 : a list of ipv4 addresses to be set on the network device
146 * @ipv6 : a list of ipv6 addresses to be set on the network device
147 * @ipv4_gateway_auto : whether the ipv4 gateway is to be automatically gathered
148 * from the associated @link
149 * @ipv4_gateway : ipv4 gateway
150 * @ipv6_gateway_auto : whether the ipv6 gateway is to be automatically gathered
151 * from the associated @link
152 * @ipv6_gateway : ipv6 gateway
153 * @upscript : a script filename to be executed during interface
155 * @downscript : a script filename to be executed during interface
168 struct lxc_list ipv4
;
169 struct lxc_list ipv6
;
170 bool ipv4_gateway_auto
;
171 struct in_addr
*ipv4_gateway
;
172 bool ipv6_gateway_auto
;
173 struct in6_addr
*ipv6_gateway
;
178 /* Convert a string mac address to a socket structure. */
179 extern int lxc_convert_mac(char *macaddr
, struct sockaddr
*sockaddr
);
181 /* Move a device between namespaces. */
182 extern int lxc_netdev_move_by_index(int ifindex
, pid_t pid
, const char *ifname
);
183 extern int lxc_netdev_move_by_name(const char *ifname
, pid_t pid
,
184 const char *newname
);
186 /* Delete a network device. */
187 extern int lxc_netdev_delete_by_name(const char *name
);
188 extern int lxc_netdev_delete_by_index(int ifindex
);
190 /* Change the device name. */
191 extern int lxc_netdev_rename_by_name(const char *oldname
, const char *newname
);
192 extern int lxc_netdev_rename_by_index(int ifindex
, const char *newname
);
194 extern int netdev_set_flag(const char *name
, int flag
);
196 /* Set the device network up or down. */
197 extern int lxc_netdev_isup(const char *name
);
198 extern int lxc_netdev_up(const char *name
);
199 extern int lxc_netdev_down(const char *name
);
201 /* Change the mtu size for the specified device. */
202 extern int lxc_netdev_set_mtu(const char *name
, int mtu
);
204 /* Create a virtual network devices. */
205 extern int lxc_veth_create(const char *name1
, const char *name2
);
206 extern int lxc_macvlan_create(const char *master
, const char *name
, int mode
);
207 extern int lxc_vlan_create(const char *master
, const char *name
,
210 /* Set ip address. */
211 extern int lxc_ipv6_addr_add(int ifindex
, struct in6_addr
*addr
,
212 struct in6_addr
*mcast
,
213 struct in6_addr
*acast
, int prefix
);
215 extern int lxc_ipv4_addr_add(int ifindex
, struct in_addr
*addr
,
216 struct in_addr
*bcast
, int prefix
);
218 /* Get ip address. */
219 extern int lxc_ipv4_addr_get(int ifindex
, struct in_addr
**res
);
220 extern int lxc_ipv6_addr_get(int ifindex
, struct in6_addr
**res
);
222 /* Set a destination route to an interface. */
223 extern int lxc_ipv4_dest_add(int ifindex
, struct in_addr
*dest
);
224 extern int lxc_ipv6_dest_add(int ifindex
, struct in6_addr
*dest
);
226 /* Set default route. */
227 extern int lxc_ipv4_gateway_add(int ifindex
, struct in_addr
*gw
);
228 extern int lxc_ipv6_gateway_add(int ifindex
, struct in6_addr
*gw
);
230 /* Attach an interface to the bridge. */
231 extern int lxc_bridge_attach(const char *bridge
, const char *ifname
);
232 extern int lxc_ovs_delete_port(const char *bridge
, const char *nic
);
234 extern bool is_ovs_bridge(const char *bridge
);
236 /* Create default gateway. */
237 extern int lxc_route_create_default(const char *addr
, const char *ifname
,
240 /* Delete default gateway. */
241 extern int lxc_route_delete_default(const char *addr
, const char *ifname
,
244 /* Activate neighbor proxying. */
245 extern int lxc_neigh_proxy_on(const char *name
, int family
);
247 /* Disable neighbor proxying. */
248 extern int lxc_neigh_proxy_off(const char *name
, int family
);
250 /* Generate a new unique network interface name.
251 * Allocated memory must be freed by caller.
253 extern char *lxc_mkifname(char *template);
255 extern const char *lxc_net_type_to_str(int type
);
256 extern int setup_private_host_hw_addr(char *veth1
);
257 extern int netdev_get_mtu(int ifindex
);
258 extern int lxc_create_network_priv(struct lxc_handler
*handler
);
259 extern int lxc_network_move_created_netdev_priv(const char *lxcpath
,
261 struct lxc_list
*network
,
263 extern void lxc_delete_network(struct lxc_handler
*handler
);
264 extern int lxc_find_gateway_addresses(struct lxc_handler
*handler
);
265 extern int lxc_create_network_unpriv(const char *lxcpath
, const char *lxcname
,
266 struct lxc_list
*network
, pid_t pid
, unsigned int hook_version
);
267 extern int lxc_requests_empty_network(struct lxc_handler
*handler
);
268 extern int lxc_restore_phys_nics_to_netns(struct lxc_handler
*handler
);
269 extern int lxc_setup_network_in_child_namespaces(const struct lxc_conf
*conf
,
270 struct lxc_list
*network
);
271 extern int lxc_network_send_veth_names_to_child(struct lxc_handler
*handler
);
272 extern int lxc_network_recv_veth_names_from_parent(struct lxc_handler
*handler
);
273 extern int lxc_network_send_name_and_ifindex_to_parent(struct lxc_handler
*handler
);
274 extern int lxc_network_recv_name_and_ifindex_from_child(struct lxc_handler
*handler
);
276 #endif /* __LXC_NETWORK_H */