Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 212 insertions, 0 deletions

diff --git a/src/VBox/Devices/Network/slirp/tcp.h b/src/VBox/Devices/Network/slirp/tcp.h
new file mode 100644
index 00000000..8ca6a17c
--- /dev/null
+++ b/src/VBox/Devices/Network/slirp/tcp.h
@@ -0,0 +1,212 @@
+/* $Id: tcp.h $ */
+/** @file
+ * NAT - TCP.
+ */
+
+/*
+ * Copyright (C) 2006-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+/*
+ * This code is based on:
+ *
+ * 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.
+ *
+ *      @(#)tcp.h       8.1 (Berkeley) 6/10/93
+ * tcp.h,v 1.3 1994/08/21 05:27:34 paul Exp
+ */
+
+#ifndef _TCP_H_
+#define _TCP_H_
+
+typedef uint32_t  tcp_seq;
+
+#define PR_SLOWHZ       2               /* 2 slow timeouts per second (approx) */
+#define PR_FASTHZ       5               /* 5 fast timeouts per second (not important) */
+
+extern int tcp_rcvspace;
+extern int tcp_sndspace;
+extern struct socket *tcp_last_so;
+
+#define TCP_SNDSPACE 8192
+#define TCP_RCVSPACE 8192
+
+/*
+ * TCP header.
+ * Per RFC 793, September, 1981.
+ */
+struct tcphdr
+{
+    uint16_t   th_sport;                /* source port */
+    uint16_t   th_dport;                /* destination port */
+    tcp_seq    th_seq;                  /* sequence number */
+    tcp_seq    th_ack;                  /* acknowledgement number */
+#ifdef WORDS_BIGENDIAN
+# ifdef _MSC_VER
+    uint8_t    th_off:4;               /* data offset */
+    uint8_t    th_x2:4;                /* (unused) */
+# else
+    unsigned   th_off:4;               /* data offset */
+    unsigned   th_x2:4;                /* (unused) */
+# endif
+#else
+# ifdef _MSC_VER
+    uint8_t    th_x2:4;                /* (unused) */
+    uint8_t    th_off:4;               /* data offset */
+# else
+    unsigned   th_x2:4;                /* (unused) */
+    unsigned   th_off:4;               /* data offset */
+# endif
+#endif
+    uint8_t    th_flags;
+#define TH_FIN  0x01
+#define TH_SYN  0x02
+#define TH_RST  0x04
+#define TH_PUSH 0x08
+#define TH_ACK  0x10
+#define TH_URG  0x20
+    uint16_t   th_win;                 /* window */
+    uint16_t   th_sum;                 /* checksum */
+    uint16_t   th_urp;                 /* urgent pointer */
+};
+AssertCompileSize(struct tcphdr, 20);
+
+#include "tcp_var.h"
+
+#define TCPOPT_EOL              0
+#define TCPOPT_NOP              1
+#define TCPOPT_MAXSEG           2
+#define    TCPOLEN_MAXSEG               4
+#define TCPOPT_WINDOW           3
+#define    TCPOLEN_WINDOW               3
+#define TCPOPT_SACK_PERMITTED   4               /* Experimental */
+#define    TCPOLEN_SACK_PERMITTED       2
+#define TCPOPT_SACK             5               /* Experimental */
+#define TCPOPT_TIMESTAMP        8
+#define    TCPOLEN_TIMESTAMP            10
+#define    TCPOLEN_TSTAMP_APPA          (TCPOLEN_TIMESTAMP+2) /* appendix A */
+
+#define TCPOPT_TSTAMP_HDR       \
+    (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP)
+
+/*
+ * Default maximum segment size for TCP.
+ * With an IP MSS of 576, this is 536,
+ * but 512 is probably more convenient.
+ * This should be defined as MIN(512, IP_MSS - sizeof (struct tcpiphdr)).
+ *
+ * We make this 1460 because we only care about Ethernet in the qemu context.
+ */
+#define TCP_MSS (if_mtu - 80)
+
+#define TCP_MAXWIN      65535   /* largest value for (unscaled) window */
+
+#define TCP_MAX_WINSHIFT        14      /* maximum window shift */
+
+/*
+ * User-settable options (used with setsockopt).
+ *
+ * We don't use the system headers on unix because we have conflicting
+ * local structures. We can't avoid the system definitions on Windows,
+ * so we undefine them.
+ */
+#undef TCP_NODELAY
+#define TCP_NODELAY     0x01    /* don't delay send to coalesce packets */
+#undef TCP_MAXSEG
+/* #define      TCP_MAXSEG      0x02 */ /* set maximum segment size */
+
+/*
+ * TCP FSM state definitions.
+ * Per RFC793, September, 1981.
+ */
+
+#define TCP_NSTATES     11
+
+#define TCPS_CLOSED             0       /* closed */
+#define TCPS_LISTEN             1       /* listening for connection */
+#define TCPS_SYN_SENT           2       /* active, have sent syn */
+#define TCPS_SYN_RECEIVED       3       /* have send and received syn */
+/* states < TCPS_ESTABLISHED are those where connections not established */
+#define TCPS_ESTABLISHED        4       /* established */
+#define TCPS_CLOSE_WAIT         5       /* rcvd fin, waiting for close */
+/* states > TCPS_CLOSE_WAIT are those where user has closed */
+#define TCPS_FIN_WAIT_1         6       /* have closed, sent fin */
+#define TCPS_CLOSING            7       /* closed xchd FIN; await FIN ACK */
+#define TCPS_LAST_ACK           8       /* had fin and close; await FIN ACK */
+/* states > TCPS_CLOSE_WAIT && < TCPS_FIN_WAIT_2 await ACK of FIN */
+#define TCPS_FIN_WAIT_2         9       /* have closed, fin is acked */
+#define TCPS_TIME_WAIT          10      /* in 2*msl quiet wait after close */
+
+#define TCPS_HAVERCVDSYN(s)     ((s) >= TCPS_SYN_RECEIVED)
+#define TCPS_HAVEESTABLISHED(s) ((s) >= TCPS_ESTABLISHED)
+#define TCPS_HAVERCVDFIN(s)     ((s) >= TCPS_TIME_WAIT)
+
+/*
+ * TCP sequence numbers are 32 bit integers operated on with modular arithmetic.
+ * These macros can be used to compare such integers.
+ */
+#define SEQ_LT(a,b)     ((int)((a)-(b)) < 0)
+#define SEQ_LEQ(a,b)    ((int)((a)-(b)) <= 0)
+#define SEQ_GT(a,b)     ((int)((a)-(b)) > 0)
+#define SEQ_GEQ(a,b)    ((int)((a)-(b)) >= 0)
+
+/*
+ * Macros to initialize tcp sequence numbers for
+ * send and receive from initial send and receive
+ * sequence numbers.
+ */
+#define tcp_rcvseqinit(tp) \
+     (tp)->rcv_adv = (tp)->rcv_nxt = (tp)->irs + 1
+
+#define tcp_sendseqinit(tp) \
+    (tp)->snd_una = (tp)->snd_nxt = (tp)->snd_max = (tp)->snd_up = (tp)->iss
+
+#define TCP_ISSINCR     (125*1024)      /* increment for tcp_iss each second */
+
+
+extern const char * const tcpstates[];
+
+#endif