The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/net/flowtable.h

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    1 /**************************************************************************
    2 
    3 Copyright (c) 2008-2010, BitGravity Inc.
    4 All rights reserved.
    5 
    6 Redistribution and use in source and binary forms, with or without
    7 modification, are permitted provided that the following conditions are met:
    8 
    9  1. Redistributions of source code must retain the above copyright notice,
   10     this list of conditions and the following disclaimer.
   11 
   12  2. Neither the name of the BitGravity Corporation nor the names of its
   13     contributors may be used to endorse or promote products derived from
   14     this software without specific prior written permission.
   15 
   16 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   17 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
   20 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   21 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   22 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   23 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   24 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   25 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   26 POSSIBILITY OF SUCH DAMAGE.
   27 
   28 $FreeBSD: releng/8.3/sys/net/flowtable.h 206024 2010-04-01 00:36:40Z kmacy $
   29 
   30 ***************************************************************************/
   31 
   32 #ifndef _NET_FLOWTABLE_H_
   33 #define _NET_FLOWTABLE_H_
   34 
   35 #ifdef  _KERNEL
   36 
   37 #define FL_HASH_ALL     (1<<0)  /* hash 4-tuple + protocol */
   38 #define FL_PCPU         (1<<1)  /* pcpu cache */
   39 #define FL_NOAUTO       (1<<2)  /* don't automatically add flentry on miss */
   40 
   41 #define FL_TCP          (1<<11)
   42 #define FL_SCTP         (1<<12)
   43 #define FL_UDP          (1<<13)
   44 #define FL_DEBUG        (1<<14)
   45 #define FL_DEBUG_ALL    (1<<15)
   46 
   47 struct flowtable;
   48 struct flentry;
   49 struct route;
   50 struct route_in6;
   51 
   52 VNET_DECLARE(struct flowtable *, ip_ft);
   53 #define V_ip_ft                 VNET(ip_ft)
   54 
   55 VNET_DECLARE(struct flowtable *, ip6_ft);
   56 #define V_ip6_ft                VNET(ip6_ft)
   57 
   58 struct flowtable *flowtable_alloc(char *name, int nentry, int flags);
   59 
   60 /*
   61  * Given a flow table, look up the L3 and L2 information and
   62  * return it in the route.
   63  *
   64  */
   65 struct flentry *flowtable_lookup_mbuf(struct flowtable *ft, struct mbuf *m, int af);
   66 
   67 struct flentry *flowtable_lookup(struct flowtable *ft, struct sockaddr_storage *ssa,
   68     struct sockaddr_storage *dsa, uint32_t fibnum, int flags);
   69 
   70 int kern_flowtable_insert(struct flowtable *ft, struct sockaddr_storage *ssa,
   71     struct sockaddr_storage *dsa, struct route *ro, uint32_t fibnum, int flags);
   72 
   73 void flow_invalidate(struct flentry *fl);
   74 void flowtable_route_flush(struct flowtable *ft, struct rtentry *rt);
   75 
   76 void flow_to_route(struct flentry *fl, struct route *ro);
   77 
   78 void flow_to_route_in6(struct flentry *fl, struct route_in6 *ro);
   79 
   80 
   81 #endif /* _KERNEL */
   82 #endif

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