2008-04-13 06:12:13 +00:00
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/* $KAME: radix_mpath.h,v 1.10 2004/11/06 15:44:28 itojun Exp $ */
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/*
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* Copyright (C) 2001 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* THE AUTHORS DO NOT GUARANTEE THAT THIS SOFTWARE DOES NOT INFRINGE
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* ANY OTHERS' INTELLECTUAL PROPERTIES. IN NO EVENT SHALL THE AUTHORS
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* BE LIABLE FOR ANY INFRINGEMENT OF ANY OTHERS' INTELLECTUAL
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* PROPERTIES.
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*/
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/* $FreeBSD$ */
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#ifndef _NET_RADIX_MPATH_H_
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#define _NET_RADIX_MPATH_H_
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#ifdef _KERNEL
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/*
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* Radix tree API with multipath support
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*/
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struct route;
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struct rtentry;
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struct sockaddr;
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MFP r287070,r287073: split radix implementation and route table structure.
There are number of radix consumers in kernel land (pf,ipfw,nfs,route)
with different requirements. In fact, first 3 don't have _any_ requirements
and first 2 does not use radix locking. On the other hand, routing
structure do have these requirements (rnh_gen, multipath, custom
to-be-added control plane functions, different locking).
Additionally, radix should not known anything about its consumers internals.
So, radix code now uses tiny 'struct radix_head' structure along with
internal 'struct radix_mask_head' instead of 'struct radix_node_head'.
Existing consumers still uses the same 'struct radix_node_head' with
slight modifications: they need to pass pointer to (embedded)
'struct radix_head' to all radix callbacks.
Routing code now uses new 'struct rib_head' with different locking macro:
RADIX_NODE_HEAD prefix was renamed to RIB_ (which stands for routing
information base).
New net/route_var.h header was added to hold routing subsystem internal
data. 'struct rib_head' was placed there. 'struct rtentry' will also
be moved there soon.
2016-01-25 06:33:15 +00:00
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struct rib_head;
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int rt_mpath_capable(struct rib_head *);
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int rn_mpath_capable(struct radix_head *);
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2008-04-13 06:12:13 +00:00
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struct radix_node *rn_mpath_next(struct radix_node *);
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2008-05-30 09:34:35 +00:00
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u_int32_t rn_mpath_count(struct radix_node *);
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2008-04-13 06:12:13 +00:00
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struct rtentry *rt_mpath_matchgate(struct rtentry *, struct sockaddr *);
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MFP r287070,r287073: split radix implementation and route table structure.
There are number of radix consumers in kernel land (pf,ipfw,nfs,route)
with different requirements. In fact, first 3 don't have _any_ requirements
and first 2 does not use radix locking. On the other hand, routing
structure do have these requirements (rnh_gen, multipath, custom
to-be-added control plane functions, different locking).
Additionally, radix should not known anything about its consumers internals.
So, radix code now uses tiny 'struct radix_head' structure along with
internal 'struct radix_mask_head' instead of 'struct radix_node_head'.
Existing consumers still uses the same 'struct radix_node_head' with
slight modifications: they need to pass pointer to (embedded)
'struct radix_head' to all radix callbacks.
Routing code now uses new 'struct rib_head' with different locking macro:
RADIX_NODE_HEAD prefix was renamed to RIB_ (which stands for routing
information base).
New net/route_var.h header was added to hold routing subsystem internal
data. 'struct rib_head' was placed there. 'struct rtentry' will also
be moved there soon.
2016-01-25 06:33:15 +00:00
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int rt_mpath_conflict(struct rib_head *, struct rtentry *,
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2008-04-13 06:12:13 +00:00
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struct sockaddr *);
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2008-05-30 09:34:35 +00:00
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void rtalloc_mpath_fib(struct route *, u_int32_t, u_int);
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2016-01-11 08:45:28 +00:00
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struct rtentry *rt_mpath_select(struct rtentry *, uint32_t);
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2008-04-13 06:12:13 +00:00
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int rt_mpath_deldup(struct rtentry *, struct rtentry *);
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int rn4_mpath_inithead(void **, int);
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int rn6_mpath_inithead(void **, int);
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#endif
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#endif /* _NET_RADIX_MPATH_H_ */
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