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, 205 insertions, 0 deletions

diff --git a/src/VBox/Devices/Network/slirp/socket.h b/src/VBox/Devices/Network/slirp/socket.h
new file mode 100644
index 00000000..a518412f
--- /dev/null
+++ b/src/VBox/Devices/Network/slirp/socket.h
@@ -0,0 +1,205 @@
+/* $Id: socket.h $ */
+/** @file
+ * NAT - socket handling (declarations/defines).
+ */
+
+/*
+ * 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) 1995 Danny Gasparovski.
+ *
+ * Please read the file COPYRIGHT for the
+ * terms and conditions of the copyright.
+ */
+
+/* MINE */
+
+#ifndef _SLIRP_SOCKET_H_
+#define _SLIRP_SOCKET_H_
+
+#define SO_EXPIRE 240000
+#define SO_EXPIREFAST 10000
+
+/*
+ * Our socket structure
+ */
+
+struct socket
+{
+    struct socket   *so_next;
+    struct socket   *so_prev;    /* For a linked list of sockets */
+
+#if !defined(RT_OS_WINDOWS)
+    int s;                       /* The actual socket */
+#else
+    union {
+            int s;
+            HANDLE sh;
+    };
+    uint64_t so_icmp_id; /* XXX: hack */
+    uint64_t so_icmp_seq; /* XXX: hack */
+#endif
+
+    /* XXX union these with not-yet-used sbuf params */
+    struct mbuf     *so_m;       /* Pointer to the original SYN packet,
+                                  * for non-blocking connect()'s, and
+                                  * PING reply's */
+    struct tcpiphdr *so_ti;      /* Pointer to the original ti within
+                                  * so_mconn, for non-blocking connections */
+    uint8_t         *so_ohdr;    /* unmolested IP header of the datagram in so_m */
+    caddr_t         so_optp;     /* tcp options in so_m */
+    int             so_optlen;   /* length of options in so_m */
+    int             so_urgc;
+    struct in_addr  so_faddr;    /* foreign host table entry */
+    struct in_addr  so_laddr;    /* local host table entry */
+    u_int16_t       so_fport;    /* foreign port */
+    u_int16_t       so_lport;    /* local port */
+    u_int16_t       so_hlport; /* host local port */
+    struct in_addr  so_hladdr;    /* local host addr */
+
+    u_int8_t        so_iptos;    /* Type of service */
+
+    uint8_t         so_sottl;    /* cached socket's IP_TTL option */
+    uint8_t         so_sotos;    /* cached socket's IP_TOS option */
+    int8_t          so_sodf;     /* cached socket's DF option */
+
+    u_char          so_type;     /* Type of socket, UDP or TCP */
+    int             so_state;    /* internal state flags SS_*, below */
+
+    struct tcpcb    *so_tcpcb;   /* pointer to TCP protocol control block */
+    u_int           so_expire;   /* When the socket will expire */
+
+    int             so_queued;   /* Number of packets queued from this socket */
+    int             so_nqueued;  /* Number of packets queued in a row
+                                  * Used to determine when to "downgrade" a session
+                                  * from fastq to batchq */
+
+    struct sbuf     so_rcv;      /* Receive buffer */
+    struct sbuf     so_snd;      /* Send buffer */
+#ifndef RT_OS_WINDOWS
+    int so_poll_index;
+#endif /* !RT_OS_WINDOWS */
+    /*
+     * FD_CLOSE/POLLHUP event has been occurred on socket
+     */
+    int so_close;
+
+    void (* so_timeout)(PNATState pData, struct socket *so, void *arg);
+    void *so_timeout_arg;
+
+    /** These flags (''fUnderPolling'' and ''fShouldBeRemoved'') introduced to
+     *  to let polling routine gain control over freeing socket whatever level of
+     *  TCP/IP initiated socket releasing.
+     *  So polling routine when start processing socket alter it's state to
+     *  ''fUnderPolling'' to 1, and clean (set to 0) when it finish.
+     *  When polling routine calls functions it should be ensure on return,
+     *  whether ''fShouldBeRemoved'' set or not, and depending on state call
+     *  ''sofree'' or continue socket processing.
+     *  On ''fShouldBeRemoved'' equal to 1, polling routine should call ''sofree'',
+     *  clearing ''fUnderPolling'' to do real freeng of the socket and removing from
+     *  the queue.
+     *  @todo: perhaps, to simplefy the things we need some helper function.
+     *  @note: it's used like a bool, I use 'int' to avoid compiler warnings
+     *  appearing if [-Wc++-compat] used.
+     */
+    int fUnderPolling;
+    /** This flag used by ''sofree'' function in following manner
+     *
+     *  fUnderPolling = 1, then we don't remove socket from the queue, just
+     *  alter value ''fShouldBeRemoved'' to 1, else we do removal.
+     */
+    int fShouldBeRemoved;
+};
+
+# define SOCKET_LOCK(so) do {} while (0)
+# define SOCKET_UNLOCK(so) do {} while (0)
+# define SOCKET_LOCK_CREATE(so) do {} while (0)
+# define SOCKET_LOCK_DESTROY(so) do {} while (0)
+
+/*
+ * Socket state bits. (peer means the host on the Internet,
+ * local host means the host on the other end of the modem)
+ */
+#define SS_NOFDREF              0x001   /* No fd reference */
+
+#define SS_ISFCONNECTING        0x002   /* Socket is connecting to peer (non-blocking connect()'s) */
+#define SS_ISFCONNECTED         0x004   /* Socket is connected to peer */
+#define SS_FCANTRCVMORE         0x008   /* Socket can't receive more from peer (for half-closes) */
+#define SS_FCANTSENDMORE        0x010   /* Socket can't send more to peer (for half-closes) */
+/* #define SS_ISFDISCONNECTED   0x020*/ /* Socket has disconnected from peer, in 2MSL state */
+#define SS_FWDRAIN              0x040   /* We received a FIN, drain data and set SS_FCANTSENDMORE */
+
+/* #define SS_CTL               0x080 */
+#define SS_FACCEPTCONN          0x100   /* Socket is accepting connections from a host on the internet */
+#define SS_FACCEPTONCE          0x200   /* If set, the SS_FACCEPTCONN socket will die after one accept */
+
+extern struct socket tcb;
+
+#if defined(DECLARE_IOVEC) && !defined(HAVE_READV)
+# if !defined(RT_OS_WINDOWS)
+struct iovec
+{
+    char *iov_base;
+    size_t iov_len;
+};
+# else
+/* make it congruent with WSABUF */
+struct iovec
+{
+    ULONG iov_len;
+    char *iov_base;
+};
+# endif
+#endif
+
+void so_init (void);
+struct socket * solookup (struct socket *, struct in_addr, u_int, struct in_addr, u_int);
+struct socket * socreate (void);
+void sofree (PNATState, struct socket *);
+int sobind(PNATState, struct socket *);
+int soread (PNATState, struct socket *);
+void sorecvoob (PNATState, struct socket *);
+int sosendoob (struct socket *);
+int sowrite (PNATState, struct socket *);
+void sorecvfrom (PNATState, struct socket *);
+int sosendto (PNATState, struct socket *, struct mbuf *);
+struct socket * solisten (PNATState, u_int32_t, u_int, u_int32_t, u_int, int);
+void sorwakeup (struct socket *);
+void sowwakeup (struct socket *);
+void soisfconnecting (register struct socket *);
+void soisfconnected (register struct socket *);
+int sofcantrcvmore (struct  socket *);
+void sofcantsendmore (struct socket *);
+void soisfdisconnected (struct socket *);
+void sofwdrain (struct socket *);
+
+static inline int soIgnorableErrorCode(int iErrorCode)
+{
+    return (   iErrorCode == EINPROGRESS
+            || iErrorCode == EAGAIN
+            || iErrorCode == EWOULDBLOCK);
+}
+
+#endif /* _SOCKET_H_ */