Home | History | Annotate | Line # | Download | only in netinet
in_offload.h revision 1.4 
      1 /*	$NetBSD: in_offload.h,v 1.4 2006/11/25 18:41:36 yamt Exp $	*/
      2 
      3 /*-
      4  * Copyright (c)2005, 2006 YAMAMOTO Takashi,
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * 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 AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _NETINET_IN_OFFLOAD_H_
     30 #define	_NETINET_IN_OFFLOAD_H_
     31 
     32 /*
     33  * subroutines to do software-only equivalent of h/w offloading.
     34  */
     35 
     36 int tcp4_segment(struct mbuf *, int (*)(void *, struct mbuf *), void *);
     37 int ip_tso_output(struct ifnet *, struct mbuf *, struct sockaddr *,
     38     struct rtentry *);
     39 
     40 /*
     41  * offloading related sysctl variables.
     42  *
     43  * they are here because it violates protocol layering in unusual way.
     44  * ie. while they are TCP/UDP sysctls, they are used by IP layer.
     45  */
     46 
     47 extern int tcp_do_loopback_cksum; /* do TCP checksum on loopback? */
     48 extern int udp_do_loopback_cksum; /* do UDP checksum on loopback? */
     49 
     50 #endif /* !_NETINET_IN_OFFLOAD_H_ */
     51