forked from osmocom/wireshark
6f43fbb2f0
I've done more than a day to change the timestamp resolution from microseconds to nanoseconds. As I really don't want to loose those changes, I'm going to check in the changes I've done so far. Hopefully someone else will give me a helping hand with the things left ... What's done: I've changed the timestamp resolution from usec to nsec in almost any place in the sources. I've changed parts of the implementation in nstime.s/.h and a lot of places elsewhere. As I don't understand the editcap source (well, I'm maybe just too tired right now), hopefully someone else might be able to fix this soon. Doing all those changes, we get native nanosecond timestamp resolution in Ethereal. After fixing all the remaining issues, I'll take a look how to display this in a convenient way... As I've also changed the wiretap timestamp resolution from usec to nsec we might want to change the wiretap version number... svn path=/trunk/; revision=15520
154 lines
4.5 KiB
C
154 lines
4.5 KiB
C
/*
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* h225-persistentdata.c
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* Source for lists and hash tables used in ethereal's h225 dissector
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* for calculation of delays in h225-calls
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*
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* Copyright 2003 Lars Roland
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*
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* $Id$
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/conversation.h>
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#include <epan/emem.h>
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#include <stdio.h>
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#include <string.h>
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#include "h225-persistentdata.h"
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/* Global Memory Chunks for lists and Global hash tables*/
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static GHashTable *ras_calls[7] = {NULL, NULL, NULL, NULL, NULL, NULL, NULL};
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/*
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* Functions needed for Ras-Hash-Table
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*/
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/* compare 2 keys */
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static gint h225ras_call_equal(gconstpointer k1, gconstpointer k2)
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{
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const h225ras_call_info_key* key1 = (const h225ras_call_info_key*) k1;
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const h225ras_call_info_key* key2 = (const h225ras_call_info_key*) k2;
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return (key1->reqSeqNum == key2->reqSeqNum &&
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key1->conversation == key2->conversation);
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}
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/* calculate a hash key */
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static guint h225ras_call_hash(gconstpointer k)
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{
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const h225ras_call_info_key* key = (const h225ras_call_info_key*) k;
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return key->reqSeqNum + GPOINTER_TO_UINT(key->conversation);
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}
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h225ras_call_t * find_h225ras_call(h225ras_call_info_key *h225ras_call_key ,int category)
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{
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h225ras_call_t *h225ras_call = NULL;
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h225ras_call = (h225ras_call_t *)g_hash_table_lookup(ras_calls[category], h225ras_call_key);
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return h225ras_call;
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}
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h225ras_call_t * new_h225ras_call(h225ras_call_info_key *h225ras_call_key, packet_info *pinfo, guint8 *guid, int category)
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{
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h225ras_call_info_key *new_h225ras_call_key;
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h225ras_call_t *h225ras_call = NULL;
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/* Prepare the value data.
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"req_num" and "rsp_num" are frame numbers;
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frame numbers are 1-origin, so we use 0
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to mean "we don't yet know in which frame
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the reply for this call appears". */
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new_h225ras_call_key = se_alloc(sizeof(h225ras_call_info_key));
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new_h225ras_call_key->reqSeqNum = h225ras_call_key->reqSeqNum;
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new_h225ras_call_key->conversation = h225ras_call_key->conversation;
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h225ras_call = se_alloc(sizeof(h225ras_call_t));
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h225ras_call->req_num = pinfo->fd->num;
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h225ras_call->rsp_num = 0;
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h225ras_call->requestSeqNum = h225ras_call_key->reqSeqNum;
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h225ras_call->responded = FALSE;
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h225ras_call->next_call = NULL;
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h225ras_call->req_time=pinfo->fd->abs_ts;
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memcpy(h225ras_call->guid, guid,16);
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/* store it */
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g_hash_table_insert(ras_calls[category], new_h225ras_call_key, h225ras_call);
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return h225ras_call;
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}
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h225ras_call_t * append_h225ras_call(h225ras_call_t *prev_call, packet_info *pinfo, guint8 *guid, int category _U_)
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{
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h225ras_call_t *h225ras_call = NULL;
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/* Prepare the value data.
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"req_num" and "rsp_num" are frame numbers;
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frame numbers are 1-origin, so we use 0
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to mean "we don't yet know in which frame
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the reply for this call appears". */
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h225ras_call = se_alloc(sizeof(h225ras_call_t));
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h225ras_call->req_num = pinfo->fd->num;
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h225ras_call->rsp_num = 0;
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h225ras_call->requestSeqNum = prev_call->requestSeqNum;
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h225ras_call->responded = FALSE;
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h225ras_call->next_call = NULL;
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h225ras_call->req_time=pinfo->fd->abs_ts;
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memcpy(h225ras_call->guid, guid,16);
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prev_call->next_call = h225ras_call;
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return h225ras_call;
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}
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/* Init routine for hash tables and delay calculation
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This routine will be called by Ethereal, before it
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is (re-)dissecting a trace file from beginning.
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We need to discard and init any state we've saved */
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void
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h225_init_routine(void)
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{
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int i;
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/* free hash-tables for RAS SRT */
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for(i=0;i<7;i++) {
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if (ras_calls[i] != NULL) {
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g_hash_table_destroy(ras_calls[i]);
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ras_calls[i] = NULL;
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}
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}
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/* create new hash-tables for RAS SRT */
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for(i=0;i<7;i++) {
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ras_calls[i] = g_hash_table_new(h225ras_call_hash, h225ras_call_equal);
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}
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}
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