* (C) Copyright IBM Corp. 2007, 2008
*
* Authors:
- * Daniel Lezcano <dlezcano at fr.ibm.com>
+ * Daniel Lezcano <daniel.lezcano at free.fr>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef _network_h
-#define _network_h
+#ifndef __LXC_NETWORK_H
+#define __LXC_NETWORK_H
-/*
- * Convert a string mac address to a socket structure
- */
-extern int lxc_convert_mac(char *macaddr, struct sockaddr *sockaddr);
+#include <arpa/inet.h>
+#include <linux/types.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <sys/socket.h>
+#include <unistd.h>
-/*
- * Move a device between namespaces
- */
-extern int lxc_device_move(int ifindex, pid_t pid);
+#include "list.h"
-/*
- * Delete a network device
- */
-extern int lxc_device_delete(const char *name);
+struct lxc_conf;
+struct lxc_handler;
+struct lxc_netdev;
-/*
- * Delete a network device by the index
- */
-extern int lxc_device_delete_index(int ifindex);
+enum {
+ LXC_NET_EMPTY,
+ LXC_NET_VETH,
+ LXC_NET_MACVLAN,
+ LXC_NET_IPVLAN,
+ LXC_NET_PHYS,
+ LXC_NET_VLAN,
+ LXC_NET_NONE,
+ LXC_NET_MAXCONFTYPE,
+};
/*
- * Set the device network up
+ * Defines the structure to configure an ipv4 address
+ * @address : ipv4 address
+ * @broadcast : ipv4 broadcast address
+ * @mask : network mask
*/
-extern int lxc_device_up(const char *name);
+struct lxc_inetdev {
+ struct in_addr addr;
+ struct in_addr bcast;
+ unsigned int prefix;
+};
+
+struct lxc_route {
+ struct in_addr addr;
+};
/*
- * Set the device network down
+ * Defines the structure to configure an ipv6 address
+ * @flags : set the address up
+ * @address : ipv6 address
+ * @broadcast : ipv6 broadcast address
+ * @mask : network mask
*/
-extern int lxc_device_down(const char *name);
+struct lxc_inet6dev {
+ struct in6_addr addr;
+ struct in6_addr mcast;
+ struct in6_addr acast;
+ unsigned int prefix;
+};
-/*
- * Change the device name
+struct lxc_route6 {
+ struct in6_addr addr;
+};
+
+/* Contains information about the host side veth device.
+ * @pair : Name of the host side veth device.
+ * If the user requested that the host veth device be created with a
+ * specific names this field will be set. If this field is set @veth1
+ * is not set.
+ * @veth1 : Name of the host side veth device.
+ * If the user did not request that the host veth device be created
+ * with a specific name this field will be set. If this field is set
+ * @pair is not set.
+ * @ifindex : Ifindex of the network device.
*/
-extern int lxc_device_rename(const char *oldname, const char *newname);
+struct ifla_veth {
+ char pair[IFNAMSIZ];
+ char veth1[IFNAMSIZ];
+ int ifindex;
+ struct lxc_list ipv4_routes;
+ struct lxc_list ipv6_routes;
+};
-/*
- * Change the mtu size for the specified device
+struct ifla_vlan {
+ unsigned int flags;
+ unsigned int fmask;
+ unsigned short vid;
+ unsigned short pad;
+};
+
+struct ifla_macvlan {
+ int mode; /* private, vepa, bridge, passthru */
+};
+
+struct ifla_ipvlan {
+ int mode; /* l3, l3s, l2 */
+ int isolation; /* bridge, private, vepa */
+};
+
+/* Contains information about the physical network device as seen from the host.
+ * @ifindex : The ifindex of the physical network device in the host's network
+ * namespace.
*/
-extern int lxc_device_set_mtu(const char *name, int mtu);
+struct ifla_phys {
+ int ifindex;
+ int mtu;
+};
+
+union netdev_p {
+ struct ifla_macvlan macvlan_attr;
+ struct ifla_ipvlan ipvlan_attr;
+ struct ifla_phys phys_attr;
+ struct ifla_veth veth_attr;
+ struct ifla_vlan vlan_attr;
+};
/*
- * Create a veth network device
+ * Defines a structure to configure a network device
+ * @idx : network counter
+ * @ifindex : ifindex of the network device
+ * Note that this is the ifindex of the network device in
+ * the container's network namespace. If the network device
+ * consists of a pair of network devices (e.g. veth pairs
+ * attached to a network bridge) then this index cannot be
+ * used to identify or modify the host veth device. See
+ * struct ifla_veth for the host side information.
+ * @type : network type (veth, macvlan, vlan, ...)
+ * @flags : flag of the network device (IFF_UP, ... )
+ * @link : lxc.net.[i].link, name of bridge or host iface to attach
+ * if any
+ * @name : lxc.net.[i].name, name of iface on the container side
+ * @created_name : the name with which this interface got created before
+ * being renamed to final_name.
+ * Currenly only used for veth devices.
+ * @hwaddr : mac address
+ * @mtu : maximum transmission unit
+ * @priv : information specific to the specificed network type
+ * Note that this is a union so whether accessing a struct
+ * is possible is dependent on the network type.
+ * @ipv4 : a list of ipv4 addresses to be set on the network device
+ * @ipv6 : a list of ipv6 addresses to be set on the network device
+ * @ipv4_gateway_auto : whether the ipv4 gateway is to be automatically gathered
+ * from the associated @link
+ * @ipv4_gateway_dev : whether the ipv4 gateway is to be set as a device route
+ * @ipv4_gateway : ipv4 gateway
+ * @ipv6_gateway_auto : whether the ipv6 gateway is to be automatically gathered
+ * from the associated @link
+ * @ipv6_gateway_dev : whether the ipv6 gateway is to be set as a device route
+ * @ipv6_gateway : ipv6 gateway
+ * @upscript : a script filename to be executed during interface
+ * configuration
+ * @downscript : a script filename to be executed during interface
+ * destruction
*/
-extern int lxc_veth_create(const char *name1, const char *name2);
+struct lxc_netdev {
+ ssize_t idx;
+ int ifindex;
+ int type;
+ int flags;
+ char link[IFNAMSIZ];
+ bool l2proxy;
+ char name[IFNAMSIZ];
+ char created_name[IFNAMSIZ];
+ char *hwaddr;
+ char *mtu;
+ union netdev_p priv;
+ struct lxc_list ipv4;
+ struct lxc_list ipv6;
+ bool ipv4_gateway_auto;
+ bool ipv4_gateway_dev;
+ struct in_addr *ipv4_gateway;
+ bool ipv6_gateway_auto;
+ bool ipv6_gateway_dev;
+ struct in6_addr *ipv6_gateway;
+ char *upscript;
+ char *downscript;
+};
-/*
- * Create a macvlan network device
- */
+/* Convert a string mac address to a socket structure. */
+extern int lxc_convert_mac(char *macaddr, struct sockaddr *sockaddr);
+
+/* Move a device between namespaces. */
+extern int lxc_netdev_move_by_index(int ifindex, pid_t pid, const char *ifname);
+extern int lxc_netdev_move_by_name(const char *ifname, pid_t pid,
+ const char *newname);
+
+/* Delete a network device. */
+extern int lxc_netdev_delete_by_name(const char *name);
+extern int lxc_netdev_delete_by_index(int ifindex);
+
+/* Change the device name. */
+extern int lxc_netdev_rename_by_name(const char *oldname, const char *newname);
+extern int lxc_netdev_rename_by_index(int ifindex, const char *newname);
+
+extern int netdev_set_flag(const char *name, int flag);
+
+/* Set the device network up or down. */
+extern int lxc_netdev_isup(const char *name);
+extern int lxc_netdev_up(const char *name);
+extern int lxc_netdev_down(const char *name);
+
+/* Change the mtu size for the specified device. */
+extern int lxc_netdev_set_mtu(const char *name, int mtu);
+
+/* Create a virtual network devices. */
+extern int lxc_veth_create(const char *name1, const char *name2);
extern int lxc_macvlan_create(const char *master, const char *name, int mode);
+extern int lxc_vlan_create(const char *master, const char *name,
+ unsigned short vid);
-/*
- * Create a vlan network device
- */
-extern int lxc_vlan_create(const char *master, const char *name, ushort vid);
+/* Set ip address. */
+extern int lxc_ipv6_addr_add(int ifindex, struct in6_addr *addr,
+ struct in6_addr *mcast,
+ struct in6_addr *acast, int prefix);
-/*
- * Activate forwarding
- */
-extern int lxc_ip_forward_on(const char *name, int family);
+extern int lxc_ipv4_addr_add(int ifindex, struct in_addr *addr,
+ struct in_addr *bcast, int prefix);
-/*
- * Disable forwarding
- */
-extern int lxc_ip_forward_off(const char *name, int family);
+/* Get ip address. */
+extern int lxc_ipv4_addr_get(int ifindex, struct in_addr **res);
+extern int lxc_ipv6_addr_get(int ifindex, struct in6_addr **res);
-/*
- * Set ip address
- */
-extern int lxc_ip_addr_add(int family, int ifindex, void *addr, int prefix);
+/* Set default route. */
+extern int lxc_ipv4_gateway_add(int ifindex, struct in_addr *gw);
+extern int lxc_ipv6_gateway_add(int ifindex, struct in6_addr *gw);
-/*
- * Attach an interface to the bridge
- */
+/* Attach an interface to the bridge. */
extern int lxc_bridge_attach(const char *bridge, const char *ifname);
+extern int lxc_ovs_delete_port(const char *bridge, const char *nic);
-/*
- * Detach an interface from the bridge
- */
-extern int lxc_bridge_detach(const char *bridge, const char *ifname);
+extern bool is_ovs_bridge(const char *bridge);
-/*
- * Create default gateway
- */
+/* Create default gateway. */
extern int lxc_route_create_default(const char *addr, const char *ifname,
int gateway);
-/*
- * Delete default gateway
- */
+/* Delete default gateway. */
extern int lxc_route_delete_default(const char *addr, const char *ifname,
int gateway);
-/*
- * Activate neighbor proxying
- */
+/* Activate neighbor proxying. */
extern int lxc_neigh_proxy_on(const char *name, int family);
-/*
- * Disable neighbor proxying
- */
+/* Disable neighbor proxying. */
extern int lxc_neigh_proxy_off(const char *name, int family);
-#endif
+/* Generate a new unique network interface name.
+ * Allocated memory must be freed by caller.
+ */
+extern char *lxc_mkifname(char *template);
+
+extern const char *lxc_net_type_to_str(int type);
+extern int setup_private_host_hw_addr(char *veth1);
+extern int netdev_get_mtu(int ifindex);
+extern int lxc_network_move_created_netdev_priv(struct lxc_handler *handler);
+extern void lxc_delete_network(struct lxc_handler *handler);
+extern int lxc_find_gateway_addresses(struct lxc_handler *handler);
+extern int lxc_requests_empty_network(struct lxc_handler *handler);
+extern int lxc_restore_phys_nics_to_netns(struct lxc_handler *handler);
+extern int lxc_setup_network_in_child_namespaces(const struct lxc_conf *conf,
+ struct lxc_list *network);
+extern int lxc_network_send_to_child(struct lxc_handler *handler);
+extern int lxc_network_recv_from_parent(struct lxc_handler *handler);
+extern int lxc_network_send_name_and_ifindex_to_parent(struct lxc_handler *handler);
+extern int lxc_network_recv_name_and_ifindex_from_child(struct lxc_handler *handler);
+extern int lxc_netns_set_nsid(int netns_fd);
+extern int lxc_netns_get_nsid(__s32 fd);
+extern int lxc_create_network(struct lxc_handler *handler);
+
+#endif /* __LXC_NETWORK_H */
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