mirror of
https://git.proxmox.com/git/mirror_frr
synced 2025-11-04 01:43:38 +00:00
13460c44a2
We realize VRFs with linux netns by default. The main job is to associate a VRF with a netns. Currently this is done by the configuration: [no] vrf N netns <netns-name> This command is also available in vtysh and goes to only zebra, because presently only zebra supports multiple VRF. A file descriptor is added to "struct vrf". This is for the associated netns file. Once the command "vrf N netns NAME" is executed, the specified file is opened and the file descriptor is stored in the VRF N. In this way the association is formed. In vrf_socket(), we first switch to the specified VRF by using the stored file descriptor, and then can allocate a socket which is working in the associated netns. Signed-off-by: Feng Lu <lu.feng@6wind.com> Reviewed-by: Alain Ritoux <alain.ritoux@6wind.com> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> (cherry picked from commit 55cfa2f190620f7c711944637659bc208970324d)
143 lines
3.9 KiB
C
143 lines
3.9 KiB
C
/*
|
|
* NS related header.
|
|
* Copyright (C) 2014 6WIND S.A.
|
|
*
|
|
* This file is part of GNU Zebra.
|
|
*
|
|
* GNU Zebra is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published
|
|
* by the Free Software Foundation; either version 2, or (at your
|
|
* option) any later version.
|
|
*
|
|
* GNU Zebra 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with GNU Zebra; see the file COPYING. If not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifndef _ZEBRA_NS_H
|
|
#define _ZEBRA_NS_H
|
|
|
|
#include "linklist.h"
|
|
|
|
typedef u_int16_t ns_id_t;
|
|
|
|
/* The default NS ID */
|
|
#define NS_DEFAULT 0
|
|
|
|
/*
|
|
* The command strings
|
|
*/
|
|
#define NS_RUN_DIR "/var/run/netns"
|
|
#define NS_CMD_STR "logical-router <0-65535>"
|
|
#define NS_CMD_HELP_STR "Specify the Logical-Router\nThe Logical-Router ID\n"
|
|
|
|
#define NS_ALL_CMD_STR "logical-router all"
|
|
#define NS_ALL_CMD_HELP_STR "Specify the logical-router\nAll logical-router's\n"
|
|
|
|
/*
|
|
* NS hooks
|
|
*/
|
|
|
|
#define NS_NEW_HOOK 0 /* a new logical-router is just created */
|
|
#define NS_DELETE_HOOK 1 /* a logical-router is to be deleted */
|
|
#define NS_ENABLE_HOOK 2 /* a logical-router is ready to use */
|
|
#define NS_DISABLE_HOOK 3 /* a logical-router is to be unusable */
|
|
|
|
/*
|
|
* Add a specific hook ns module.
|
|
* @param1: hook type
|
|
* @param2: the callback function
|
|
* - param 1: the NS ID
|
|
* - param 2: the address of the user data pointer (the user data
|
|
* can be stored in or freed from there)
|
|
*/
|
|
extern void ns_add_hook (int, int (*)(ns_id_t, void **));
|
|
|
|
/*
|
|
* NS iteration
|
|
*/
|
|
|
|
typedef void * ns_iter_t;
|
|
#define NS_ITER_INVALID NULL /* invalid value of the iterator */
|
|
|
|
/*
|
|
* NS iteration utilities. Example for the usage:
|
|
*
|
|
* ns_iter_t iter = ns_first();
|
|
* for (; iter != NS_ITER_INVALID; iter = ns_next (iter))
|
|
*
|
|
* or
|
|
*
|
|
* ns_iter_t iter = ns_iterator (<a given NS ID>);
|
|
* for (; iter != NS_ITER_INVALID; iter = ns_next (iter))
|
|
*/
|
|
|
|
/* Return the iterator of the first NS. */
|
|
extern ns_iter_t ns_first (void);
|
|
/* Return the next NS iterator to the given iterator. */
|
|
extern ns_iter_t ns_next (ns_iter_t);
|
|
/* Return the NS iterator of the given NS ID. If it does not exist,
|
|
* the iterator of the next existing NS is returned. */
|
|
extern ns_iter_t ns_iterator (ns_id_t);
|
|
|
|
/*
|
|
* NS iterator to properties
|
|
*/
|
|
extern ns_id_t ns_iter2id (ns_iter_t);
|
|
extern void *ns_iter2info (ns_iter_t);
|
|
extern struct list *ns_iter2iflist (ns_iter_t);
|
|
|
|
/*
|
|
* Utilities to obtain the user data
|
|
*/
|
|
|
|
/* Get the data pointer of the specified NS. If not found, create one. */
|
|
extern void *ns_info_get (ns_id_t);
|
|
/* Look up the data pointer of the specified NS. */
|
|
extern void *ns_info_lookup (ns_id_t);
|
|
|
|
/*
|
|
* Utilities to obtain the interface list
|
|
*/
|
|
|
|
/* Look up the interface list of the specified NS. */
|
|
extern struct list *ns_iflist (ns_id_t);
|
|
/* Get the interface list of the specified NS. Create one if not find. */
|
|
extern struct list *ns_iflist_get (ns_id_t);
|
|
|
|
/*
|
|
* NS bit-map: maintaining flags, one bit per NS ID
|
|
*/
|
|
|
|
typedef void * ns_bitmap_t;
|
|
#define NS_BITMAP_NULL NULL
|
|
|
|
extern ns_bitmap_t ns_bitmap_init (void);
|
|
extern void ns_bitmap_free (ns_bitmap_t);
|
|
extern void ns_bitmap_set (ns_bitmap_t, ns_id_t);
|
|
extern void ns_bitmap_unset (ns_bitmap_t, ns_id_t);
|
|
extern int ns_bitmap_check (ns_bitmap_t, ns_id_t);
|
|
|
|
/*
|
|
* NS initializer/destructor
|
|
*/
|
|
/* Please add hooks before calling ns_init(). */
|
|
extern void ns_init (void);
|
|
extern void ns_terminate (void);
|
|
|
|
/*
|
|
* NS utilities
|
|
*/
|
|
|
|
/* Create a socket serving for the given NS */
|
|
extern int ns_socket (int, int, int, ns_id_t);
|
|
|
|
#endif /*_ZEBRA_NS_H*/
|
|
|