3feea4447f
This patch adds IPv6 case in TCP functions refactored by the last patches. This also adds IPv6 pseudo-header in tcpiphdr structure. Finally, tcp_input() is called by ip6_input(). Signed-off-by: Guillaume Subiron <maethor@subiron.org> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Reviewed-by: Thomas Huth <thuth@redhat.com>
102 lines
3.8 KiB
C
102 lines
3.8 KiB
C
/*
|
|
* Copyright (c) 1982, 1986, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)tcpip.h 8.1 (Berkeley) 6/10/93
|
|
* tcpip.h,v 1.3 1994/08/21 05:27:40 paul Exp
|
|
*/
|
|
|
|
#ifndef _TCPIP_H_
|
|
#define _TCPIP_H_
|
|
|
|
/*
|
|
* Tcp+ip header, after ip options removed.
|
|
*/
|
|
struct tcpiphdr {
|
|
struct mbuf_ptr ih_mbuf; /* backpointer to mbuf */
|
|
union {
|
|
struct {
|
|
struct in_addr ih_src; /* source internet address */
|
|
struct in_addr ih_dst; /* destination internet address */
|
|
uint8_t ih_x1; /* (unused) */
|
|
uint8_t ih_pr; /* protocol */
|
|
} ti_i4;
|
|
struct {
|
|
struct in6_addr ih_src;
|
|
struct in6_addr ih_dst;
|
|
uint8_t ih_x1;
|
|
uint8_t ih_nh;
|
|
} ti_i6;
|
|
} ti;
|
|
uint16_t ti_x0;
|
|
uint16_t ti_len; /* protocol length */
|
|
struct tcphdr ti_t; /* tcp header */
|
|
};
|
|
#define ti_mbuf ih_mbuf.mptr
|
|
#define ti_pr ti.ti_i4.ih_pr
|
|
#define ti_src ti.ti_i4.ih_src
|
|
#define ti_dst ti.ti_i4.ih_dst
|
|
#define ti_src6 ti.ti_i6.ih_src
|
|
#define ti_dst6 ti.ti_i6.ih_dst
|
|
#define ti_nh6 ti.ti_i6.ih_nh
|
|
#define ti_sport ti_t.th_sport
|
|
#define ti_dport ti_t.th_dport
|
|
#define ti_seq ti_t.th_seq
|
|
#define ti_ack ti_t.th_ack
|
|
#define ti_x2 ti_t.th_x2
|
|
#define ti_off ti_t.th_off
|
|
#define ti_flags ti_t.th_flags
|
|
#define ti_win ti_t.th_win
|
|
#define ti_sum ti_t.th_sum
|
|
#define ti_urp ti_t.th_urp
|
|
|
|
#define tcpiphdr2qlink(T) ((struct qlink*)(((char*)(T)) - sizeof(struct qlink)))
|
|
#define qlink2tcpiphdr(Q) ((struct tcpiphdr*)(((char*)(Q)) + sizeof(struct qlink)))
|
|
#define tcpiphdr_next(T) qlink2tcpiphdr(tcpiphdr2qlink(T)->next)
|
|
#define tcpiphdr_prev(T) qlink2tcpiphdr(tcpiphdr2qlink(T)->prev)
|
|
#define tcpfrag_list_first(T) qlink2tcpiphdr((T)->seg_next)
|
|
#define tcpfrag_list_end(F, T) (tcpiphdr2qlink(F) == (struct qlink*)(T))
|
|
#define tcpfrag_list_empty(T) ((T)->seg_next == (struct tcpiphdr*)(T))
|
|
|
|
/* This is the difference between the size of a tcpiphdr structure, and the
|
|
* size of actual ip+tcp headers, rounded up since we need to align data. */
|
|
#define TCPIPHDR_DELTA\
|
|
(max(0,\
|
|
(sizeof(struct tcpiphdr)\
|
|
- sizeof(struct ip) - sizeof(struct tcphdr) + 3) & ~3))
|
|
|
|
/*
|
|
* Just a clean way to get to the first byte
|
|
* of the packet
|
|
*/
|
|
struct tcpiphdr_2 {
|
|
struct tcpiphdr dummy;
|
|
char first_char;
|
|
};
|
|
|
|
#endif
|