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c7fdd84f36
We definitely need to stop abusing the route table data structure when it's not necessary. Convert the namespace code to use red-black trees instead. This greatly improves code readability. Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
96 lines
2.3 KiB
C
96 lines
2.3 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
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* along with GNU Zebra; see the file COPYING. If not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, 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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typedef u_int16_t ns_id_t;
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/* The default NS ID */
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#define NS_DEFAULT 0
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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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{
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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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/* 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, int (*)(ns_id_t, void **));
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/*
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* NS initializer/destructor
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*/
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/* Please add hooks before calling ns_init(). */
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extern void ns_init (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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#endif /*_ZEBRA_NS_H*/
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