forked from Mirror/frr
ce1be3692f
Two apis are provided so that the switch from one netns to an other one is taken care. Also an other API to know if the VRF has a NETNS backend or a VRF Lite backend. Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
111 lines
2.9 KiB
C
111 lines
2.9 KiB
C
/*
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* NS related header.
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* Copyright (C) 2014 6WIND S.A.
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*
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* This file is part of GNU Zebra.
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*
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* GNU Zebra is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2, or (at your
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* option) any later version.
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*
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* GNU Zebra is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; see the file COPYING; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _ZEBRA_NS_H
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#define _ZEBRA_NS_H
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#include "openbsd-tree.h"
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#include "linklist.h"
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#include "vty.h"
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#include "vrf.h"
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typedef u_int32_t ns_id_t;
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/* the default NS ID */
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#define NS_DEFAULT 0
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#define NS_UNKNOWN UINT32_MAX
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/* Default netns directory (Linux) */
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#define NS_RUN_DIR "/var/run/netns"
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struct ns {
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RB_ENTRY(ns) entry;
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/* Identifier, same as the vector index */
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ns_id_t ns_id;
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/* Name */
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char *name;
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/* File descriptor */
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int fd;
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/* Master list of interfaces belonging to this NS */
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struct list *iflist;
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/* Back Pointer to VRF */
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void *vrf_ctxt;
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/* User data */
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void *info;
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};
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RB_HEAD(ns_head, ns);
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RB_PROTOTYPE(ns_head, ns, entry, ns_compare)
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extern struct ns_head ns_tree;
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/*
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* NS hooks
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*/
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#define NS_NEW_HOOK 0 /* a new logical-router is just created */
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#define NS_DELETE_HOOK 1 /* a logical-router is to be deleted */
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#define NS_ENABLE_HOOK 2 /* a logical-router is ready to use */
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#define NS_DISABLE_HOOK 3 /* a logical-router is to be unusable */
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/*
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* Add a specific hook ns module.
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* @param1: hook type
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* @param2: the callback function
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* - param 1: the NS ID
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* - param 2: the address of the user data pointer (the user data
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* can be stored in or freed from there)
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*/
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extern void ns_add_hook(int type, int (*)(struct ns *));
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/*
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* NS initializer/destructor
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*/
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extern void ns_init(void);
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extern void ns_init_zebra(void);
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extern void ns_terminate(void);
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/*
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* NS utilities
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*/
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/* Create a socket serving for the given NS */
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extern int ns_socket(int, int, int, ns_id_t);
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extern void ns_cmd_init(void);
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extern int ns_handler_create(struct vty *vty, struct vrf *vrf,
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char *pathname, ns_id_t ns_id);
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extern char *ns_netns_pathname(struct vty *vty, const char *name);
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extern void *ns_info_lookup(ns_id_t ns_id);
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extern void ns_walk_func(int (*func)(struct ns *));
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extern const char *ns_get_name(struct ns *ns);
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/* API that can be used by all daemons */
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extern int ns_switchback_to_initial(void);
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extern int ns_switch_to_netns(const char *netns_name);
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extern void ns_init(void);
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#endif /*_ZEBRA_NS_H*/
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