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authorAlberto Gonzalez Iniesta <agi@inittab.org>2012-11-05 16:28:10 +0100
committerAlberto Gonzalez Iniesta <agi@inittab.org>2012-11-05 16:28:10 +0100
commitd213c4e5576e2fd601679e0d7b2fb1262b807111 (patch)
tree5f0cc82bd0f11fb13b385417604d04c751245a92 /fragment.h
parent79c8d3ef7a938f86472e549ef64e1fb820dc80c4 (diff)
parent8dd0350e1607aa30f7a043c8d5ec7a7eeb874115 (diff)
Merge tag 'upstream/2.3_rc1'
Upstream version 2.3_rc1
Diffstat (limited to 'fragment.h')
-rw-r--r--fragment.h188
1 files changed, 0 insertions, 188 deletions
diff --git a/fragment.h b/fragment.h
deleted file mode 100644
index fc2b1b8..0000000
--- a/fragment.h
+++ /dev/null
@@ -1,188 +0,0 @@
-/*
- * OpenVPN -- An application to securely tunnel IP networks
- * over a single 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
- */
-
-#ifndef FRAGMENT_H
-#define FRAGMENT_H
-
-#ifdef ENABLE_FRAGMENT
-
-#include "common.h"
-#include "buffer.h"
-#include "interval.h"
-#include "mtu.h"
-#include "shaper.h"
-#include "error.h"
-
-#define N_FRAG_BUF 25 /* number of packet buffers */
-#define FRAG_TTL_SEC 10 /* number of seconds time-to-live for a fragment */
-#define FRAG_WAKEUP_INTERVAL 5 /* wakeup code called once per n seconds */
-
-struct fragment {
- bool defined;
-
- int max_frag_size; /* maximum size of each fragment */
-
- /*
- * 32 bit array corresponding to each fragment. A 1 bit in element n means that
- * the fragment n has been received. Needs to have at least MAX_FRAGS bits.
- */
-# define FRAG_MAP_MASK 0xFFFFFFFF
-# define MAX_FRAGS 32 /* maximum number of fragments per packet */
- unsigned int map;
-
- time_t timestamp; /* timestamp for time-to-live purposes */
-
- struct buffer buf; /* fragment assembly buffer for received datagrams */
-};
-
-struct fragment_list {
- int seq_id;
- int index;
- struct fragment fragments[N_FRAG_BUF];
-};
-
-struct fragment_master {
- struct event_timeout wakeup; /* when should main openvpn event loop wake us up */
-
- /* true if the OS has explicitly recommended an MTU value */
- bool received_os_mtu_hint;
-
- /* a sequence ID describes a set of fragments that make up one datagram */
-# define N_SEQ_ID 256 /* sequence number wraps to 0 at this value (should be a power of 2) */
- int outgoing_seq_id; /* sent as FRAG_SEQ_ID below */
-
- /* outgoing packet is possibly sent as a series of fragments */
-
-# define MAX_FRAG_PKT_SIZE 65536 /* maximum packet size */
- int outgoing_frag_size; /* sent to peer via FRAG_SIZE when FRAG_YES_LAST set */
-
- int outgoing_frag_id; /* each fragment in a datagram is numbered 0 to MAX_FRAGS-1 */
-
- struct buffer outgoing; /* outgoing datagram, free if current_frag_id == 0 */
- struct buffer outgoing_return; /* buffer to return outgoing fragment */
-
- /* incoming fragments from remote */
- struct fragment_list incoming;
-};
-
-/*
- * Fragment header sent over the wire.
- */
-
-typedef uint32_t fragment_header_type;
-
-/* convert a fragment_header_type from host to network order */
-#define hton_fragment_header_type(x) htonl(x)
-
-/* convert a fragment_header_type from network to host order */
-#define ntoh_fragment_header_type(x) ntohl(x)
-
-/* FRAG_TYPE 2 bits */
-#define FRAG_TYPE_MASK 0x00000003
-#define FRAG_TYPE_SHIFT 0
-
-#define FRAG_WHOLE 0 /* packet is whole, FRAG_N_PACKETS_RECEIVED echoed back to peer */
-#define FRAG_YES_NOTLAST 1 /* packet is a fragment, but is not the last fragment,
- FRAG_N_PACKETS_RECEIVED set as above */
-#define FRAG_YES_LAST 2 /* packet is the last fragment, FRAG_SIZE = size of non-last frags */
-#define FRAG_TEST 3 /* control packet for establishing MTU size (not implemented yet) */
-
-/* FRAG_SEQ_ID 8 bits */
-#define FRAG_SEQ_ID_MASK 0x000000ff
-#define FRAG_SEQ_ID_SHIFT 2
-
-/* FRAG_ID 5 bits */
-#define FRAG_ID_MASK 0x0000001f
-#define FRAG_ID_SHIFT 10
-
-/*
- * FRAG_SIZE 14 bits
- *
- * IF FRAG_YES_LAST (FRAG_SIZE):
- * The max size of a fragment. If a fragment is not the last fragment in the packet,
- * then the fragment size is guaranteed to be equal to the max fragment size. Therefore,
- * max_frag_size is only sent over the wire if FRAG_LAST is set. Otherwise it is assumed
- * to be the actual fragment size received.
- */
-
-/* FRAG_SIZE 14 bits */
-#define FRAG_SIZE_MASK 0x00003fff
-#define FRAG_SIZE_SHIFT 15
-#define FRAG_SIZE_ROUND_SHIFT 2 /* fragment/datagram sizes represented as multiple of 4 */
-
-#define FRAG_SIZE_ROUND_MASK ((1 << FRAG_SIZE_ROUND_SHIFT) - 1)
-
-/*
- * FRAG_EXTRA 16 bits
- *
- * IF FRAG_WHOLE or FRAG_YES_NOTLAST, these 16 bits are available (not currently used)
- */
-
-/* FRAG_EXTRA 16 bits */
-#define FRAG_EXTRA_MASK 0x0000ffff
-#define FRAG_EXTRA_SHIFT 15
-
-/*
- * Public functions
- */
-
-struct fragment_master *fragment_init (struct frame *frame);
-
-void fragment_frame_init (struct fragment_master *f, const struct frame *frame);
-
-void fragment_free (struct fragment_master *f);
-
-void fragment_incoming (struct fragment_master *f, struct buffer *buf,
- const struct frame* frame);
-
-void fragment_outgoing (struct fragment_master *f, struct buffer *buf,
- const struct frame* frame);
-
-bool fragment_ready_to_send (struct fragment_master *f, struct buffer *buf,
- const struct frame* frame);
-
-/*
- * Private functions.
- */
-void fragment_wakeup (struct fragment_master *f, struct frame *frame);
-
-/*
- * Inline functions
- */
-
-static inline void
-fragment_housekeeping (struct fragment_master *f, struct frame *frame, struct timeval *tv)
-{
- if (event_timeout_trigger (&f->wakeup, tv, ETT_DEFAULT))
- fragment_wakeup (f, frame);
-}
-
-static inline bool
-fragment_outgoing_defined (struct fragment_master *f)
-{
- return f->outgoing.len > 0;
-}
-
-#endif
-#endif