e5c610d659
specific routes. When the routing table changes, for example, when a new route with a more specific prefix is inserted into the routing table, the flow-table is not updated to reflect that change. As such existing connections cannot take advantage of the new path. In some cases the path is broken. This patch will update the affected flow-table entries when a more specific route is added. The route entry is properly marked when a route is deleted from the table. In this case, when the flow-table performs a search, the stale entry is updated automatically. Therefore this patch is not necessary for route deletion. Submitted by: simon, phk Reviewed by: bz, kmacy MFC after: 3 days
58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
/**************************************************************************
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Copyright (c) 2008-2009, BitGravity Inc.
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All rights reserved.
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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 are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Neither the name of the BitGravity Corporation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND 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 COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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$FreeBSD$
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***************************************************************************/
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#ifndef _NET_FLOWTABLE_H_
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#define _NET_FLOWTABLE_H_
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#ifdef _KERNEL
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#define FL_HASH_PORTS (1<<0) /* hash 4-tuple + protocol */
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#define FL_PCPU (1<<1) /* pcpu cache */
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struct flowtable;
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VNET_DECLARE(struct flowtable *, ip_ft);
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#define V_ip_ft VNET(ip_ft)
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struct flowtable *flowtable_alloc(int nentry, int flags);
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/*
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* Given a flow table, look up the L3 and L2 information and
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* return it in the route.
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*
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*/
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int flowtable_lookup(struct flowtable *ft, struct mbuf *m,
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struct route *ro, uint32_t fibnum);
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void flowtable_route_flush(struct flowtable *ft, struct rtentry *rt);
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#endif /* _KERNEL */
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#endif
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