Imported Upstream version 2.3_rc1

1 files changed, 0 insertions, 290 deletions

diff --git a/mtu.c b/mtu.c
deleted file mode 100644
index 494f939..0000000
--- a/mtu.c
+++ /dev/null
@@ -1,290 +0,0 @@
-/*
- *  OpenVPN -- An application to securely tunnel IP networks
- *             over a single TCP/UDP port, with support for SSL/TLS-based
- *             session authentication and key exchange,
- *             packet encryption, packet authentication, and
- *             packet compression.
- *
- *  Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License version 2
- *  as published by the Free Software Foundation.
- *
- *  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 (see the file COPYING included with this
- *  distribution); if not, write to the Free Software Foundation, Inc.,
- *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include "syshead.h"
-
-#include "common.h"
-#include "buffer.h"
-#include "error.h"
-#include "integer.h"
-#include "mtu.h"
-
-#include "memdbg.h"
-
-/* allocate a buffer for socket or tun layer */
-void
-alloc_buf_sock_tun (struct buffer *buf,
-		    const struct frame *frame,
-		    const bool tuntap_buffer,
-		    const unsigned int align_mask)
-{
-  /* allocate buffer for overlapped I/O */
-  *buf = alloc_buf (BUF_SIZE (frame));
-  ASSERT (buf_init (buf, FRAME_HEADROOM_ADJ (frame, align_mask)));
-  buf->len = tuntap_buffer ? MAX_RW_SIZE_TUN (frame) : MAX_RW_SIZE_LINK (frame);
-  ASSERT (buf_safe (buf, 0));
-}
-
-void
-frame_finalize (struct frame *frame,
-		bool link_mtu_defined,
-		int link_mtu,
-		bool tun_mtu_defined,
-		int tun_mtu)
-{
-  /* Set link_mtu based on command line options */
-  if (tun_mtu_defined)
-    {
-      ASSERT (!link_mtu_defined);
-      frame->link_mtu = tun_mtu + TUN_LINK_DELTA (frame);
-    }
-  else
-    {
-      ASSERT (link_mtu_defined);
-      frame->link_mtu = link_mtu;
-    }
-
-  if (TUN_MTU_SIZE (frame) < TUN_MTU_MIN)
-    {
-      msg (M_WARN, "TUN MTU value (%d) must be at least %d", TUN_MTU_SIZE (frame), TUN_MTU_MIN);
-      frame_print (frame, M_FATAL, "MTU is too small");
-    }
-
-  frame->link_mtu_dynamic = frame->link_mtu;
-
-  frame->extra_buffer += PAYLOAD_ALIGN;
-}
-
-/*
- * Set the tun MTU dynamically.
- */
-void
-frame_set_mtu_dynamic (struct frame *frame, int mtu, unsigned int flags)
-{
-
-#ifdef ENABLE_DEBUG
-  const int orig_mtu = mtu;
-  const int orig_link_mtu_dynamic = frame->link_mtu_dynamic;
-#endif
-
-  ASSERT (mtu >= 0);
-
-  if (flags & SET_MTU_TUN)
-    mtu += TUN_LINK_DELTA (frame);
-
-  if (!(flags & SET_MTU_UPPER_BOUND) || mtu < frame->link_mtu_dynamic)
-    {
-      frame->link_mtu_dynamic = constrain_int (
-	mtu,
-	EXPANDED_SIZE_MIN (frame),
-	EXPANDED_SIZE (frame));
-    }
-
-  dmsg (D_MTU_DEBUG, "MTU DYNAMIC mtu=%d, flags=%u, %d -> %d",
-       orig_mtu,
-       flags,
-       orig_link_mtu_dynamic,
-       frame->link_mtu_dynamic);
-}
-
-/*
- * Move extra_frame octets into extra_tun.  Used by fragmenting code
- * to adjust frame relative to its position in the buffer processing
- * queue.
- */
-void
-frame_subtract_extra (struct frame *frame, const struct frame *src)
-{
-  frame->extra_frame -= src->extra_frame;
-  frame->extra_tun   += src->extra_frame;
-}
-
-void
-frame_print (const struct frame *frame,
-	     int level,
-	     const char *prefix)
-{
-  struct gc_arena gc = gc_new ();
-  struct buffer out = alloc_buf_gc (256, &gc);
-  if (prefix)
-    buf_printf (&out, "%s ", prefix);
-  buf_printf (&out, "[");
-  buf_printf (&out, " L:%d", frame->link_mtu);
-  buf_printf (&out, " D:%d", frame->link_mtu_dynamic);
-  buf_printf (&out, " EF:%d", frame->extra_frame);
-  buf_printf (&out, " EB:%d", frame->extra_buffer);
-  buf_printf (&out, " ET:%d", frame->extra_tun);
-  buf_printf (&out, " EL:%d", frame->extra_link);
-  if (frame->align_flags && frame->align_adjust)
-    buf_printf (&out, " AF:%u/%d", frame->align_flags, frame->align_adjust);
-  buf_printf (&out, " ]");
-
-  msg (level, "%s", out.data);
-  gc_free (&gc);
-}
-
-#define MTUDISC_NOT_SUPPORTED_MSG "--mtu-disc is not supported on this OS"
-
-void
-set_mtu_discover_type (int sd, int mtu_type)
-{
-  if (mtu_type >= 0)
-    {
-#if defined(HAVE_SETSOCKOPT) && defined(SOL_IP) && defined(IP_MTU_DISCOVER)
-      if (setsockopt
-	  (sd, SOL_IP, IP_MTU_DISCOVER, &mtu_type, sizeof (mtu_type)))
-	msg (M_ERR, "Error setting IP_MTU_DISCOVER type=%d on TCP/UDP socket",
-	     mtu_type);
-#else
-      msg (M_FATAL, MTUDISC_NOT_SUPPORTED_MSG);
-#endif
-    }
-}
-
-int
-translate_mtu_discover_type_name (const char *name)
-{
-#if defined(IP_PMTUDISC_DONT) && defined(IP_PMTUDISC_WANT) && defined(IP_PMTUDISC_DO)
-  if (!strcmp (name, "yes"))
-    return IP_PMTUDISC_DO;
-  if (!strcmp (name, "maybe"))
-    return IP_PMTUDISC_WANT;
-  if (!strcmp (name, "no"))
-    return IP_PMTUDISC_DONT;
-  msg (M_FATAL,
-       "invalid --mtu-disc type: '%s' -- valid types are 'yes', 'maybe', or 'no'",
-       name);
-#else
-  msg (M_FATAL, MTUDISC_NOT_SUPPORTED_MSG);
-#endif
-  return -1;			/* NOTREACHED */
-}
-
-#if EXTENDED_SOCKET_ERROR_CAPABILITY
-
-struct probehdr
-{
-  uint32_t ttl;
-  struct timeval tv;
-};
-
-const char *
-format_extended_socket_error (int fd, int *mtu, struct gc_arena *gc)
-{
-  int res;
-  struct probehdr rcvbuf;
-  struct iovec iov;
-  struct msghdr msg;
-  struct cmsghdr *cmsg;
-  struct sock_extended_err *e;
-  struct sockaddr_in addr;
-  struct buffer out = alloc_buf_gc (256, gc);
-  char *cbuf = (char *) gc_malloc (256, false, gc);
-
-  *mtu = 0;
-
-  while (true)
-    {
-      memset (&rcvbuf, -1, sizeof (rcvbuf));
-      iov.iov_base = &rcvbuf;
-      iov.iov_len = sizeof (rcvbuf);
-      msg.msg_name = (uint8_t *) &addr;
-      msg.msg_namelen = sizeof (addr);
-      msg.msg_iov = &iov;
-      msg.msg_iovlen = 1;
-      msg.msg_flags = 0;
-      msg.msg_control = cbuf;
-      msg.msg_controllen = 256; /* size of cbuf */
-
-      res = recvmsg (fd, &msg, MSG_ERRQUEUE);
-      if (res < 0)
-	goto exit;
-
-      e = NULL;
-
-      for (cmsg = CMSG_FIRSTHDR (&msg); cmsg; cmsg = CMSG_NXTHDR (&msg, cmsg))
-	{
-	  if (cmsg->cmsg_level == SOL_IP)
-	    {
-	      if (cmsg->cmsg_type == IP_RECVERR)
-		{
-		  e = (struct sock_extended_err *) CMSG_DATA (cmsg);
-		}
-	      else
-		{
-		  buf_printf (&out ,"CMSG=%d|", cmsg->cmsg_type);
-		}
-	    }
-	}
-      if (e == NULL)
-	{
-	  buf_printf (&out, "NO-INFO|");
-	  goto exit;
-	}
-
-      switch (e->ee_errno)
-	{
-	case ETIMEDOUT:
-	  buf_printf (&out, "ETIMEDOUT|");
-	  break;
-	case EMSGSIZE:
-	  buf_printf (&out, "EMSGSIZE Path-MTU=%d|", e->ee_info);
-	  *mtu = e->ee_info;
-	  break;
-	case ECONNREFUSED:
-	  buf_printf (&out, "ECONNREFUSED|");
-	  break;
-	case EPROTO:
-	  buf_printf (&out, "EPROTO|");
-	  break;
-	case EHOSTUNREACH:
-	  buf_printf (&out, "EHOSTUNREACH|");
-	  break;
-	case ENETUNREACH:
-	  buf_printf (&out, "ENETUNREACH|");
-	  break;
-	case EACCES:
-	  buf_printf (&out, "EACCES|");
-	  break;
-	default:
-	  buf_printf (&out, "UNKNOWN|");
-	  break;
-	}
-    }
-
- exit:
-  buf_rmtail (&out, '|');
-  return BSTR (&out);
-}
-
-void
-set_sock_extended_error_passing (int sd)
-{
-  int on = 1;
-  if (setsockopt (sd, SOL_IP, IP_RECVERR, &on, sizeof (on)))
-    msg (M_WARN | M_ERRNO,
-	 "Note: enable extended error passing on TCP/UDP socket failed (IP_RECVERR)");
-}
-
-#endif