466 lines
10 KiB
C
466 lines
10 KiB
C
/*****************************************************************************
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* aft_api.c AFT T1/E1: HDLC API Sample Code
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*
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* Author(s): Nenad Corbic <ncorbic@sangoma.com>
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*
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* Copyright: (c) 2003-2004 Sangoma Technologies Inc.
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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
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* 2 of the License, or (at your option) any later version.
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* ============================================================================
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <unistd.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <linux/if_wanpipe.h>
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#include <string.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <signal.h>
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#include <linux/if.h>
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#include <linux/wanpipe_defines.h>
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#include <linux/wanpipe_cfg.h>
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#include <linux/wanpipe.h>
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#include <libsangoma.h>
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#include "lib_api.h"
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#define MAX_TX_DATA 5000 /* Size of tx data */
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#define MAX_FRAMES 5000 /* Number of frames to transmit */
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#define MAX_RX_DATA 5000
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unsigned short Rx_lgth;
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unsigned char Rx_data[MAX_RX_DATA];
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unsigned char Tx_data[MAX_TX_DATA + sizeof(wp_tdm_api_rx_hdr_t)];
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/* Prototypes */
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int MakeConnection(void);
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void handle_span_chan( void);
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void sig_end(int sigid);
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int dev_fd;
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FILE *tx_fd=NULL,*rx_fd=NULL;
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wanpipe_tdm_api_t tdm_api;
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/***************************************************
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* HANDLE SOCKET
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*
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* o Read a socket
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* o Cast data received to api_rx_element_t data type
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* o The received packet contains 16 bytes header
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*
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* ------------------------------------------
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* | 16 bytes | X bytes ...
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* ------------------------------------------
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* Header Data
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*
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* o Data structures:
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* ------------------
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* typedef struct {
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* union {
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* struct {
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* unsigned char _event_type;
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* unsigned char _rbs_rx_bits;
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* unsigned int _time_stamp;
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* }wp_event;
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* struct {
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* unsigned char _rbs_rx_bits;
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* unsigned int _time_stamp;
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* }wp_rx;
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* unsigned char reserved[16];
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* }wp_rx_hdr_u;
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* #define wp_api_event_type wp_rx_hdr_u.wp_event._event_type
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* #define wp_api_event_rbs_rx_bits wp_rx_hdr_u.wp_event._rbs_rx_bits
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* #define wp_api_event_time_stamp wp_rx_hdr_u.wp_event._time_stamp
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* } wp_tdm_api_rx_hdr_t;
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*
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* typedef struct {
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* wp_tdm_api_rx_hdr_t hdr;
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* unsigned char data[1];
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* } wp_tdm_api_rx_element_t;
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*
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* typedef struct {
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* union {
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* struct {
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* unsigned char _rbs_rx_bits;
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* unsigned int _time_stamp;
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* }wp_tx;
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* unsigned char reserved[16];
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* }wp_tx_hdr_u;
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* #define wp_api_time_stamp wp_tx_hdr_u.wp_tx._time_stamp
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* } wp_tdm_api_tx_hdr_t;
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*
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* typedef struct {
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* wp_tdm_api_tx_hdr_t hdr;
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* unsigned char data[1];
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* } wp_tdm_api_tx_element_t;
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*
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* #define WPTDM_A_BIT 0x08
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* #define WPTDM_B_BIT 0x04
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* #define WPTDM_C_BIT 0x02
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* #define WPTDM_D_BIT 0x01
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*
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*/
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void handle_span_chan(void)
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{
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unsigned int Rx_count,Tx_count,Tx_length;
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wp_tdm_api_rx_element_t* api_rx_el;
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wp_tdm_api_tx_element_t * api_tx_el;
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fd_set ready,write,oob;
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int err,i;
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#if 0
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int rlen;
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int stream_sync=0;
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#endif
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Rx_count = 0;
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Tx_count = 0;
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if (tdm_api.wp_tdm_cmd.hdlc) {
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Tx_length = tx_size;
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} else {
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Tx_length = tdm_api.wp_tdm_cmd.usr_mtu_mru;
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}
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printf("\n\nSocket Handler: Rx=%d Tx=%i TxCnt=%i TxLen=%i TxDelay=%i\n",
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read_enable,write_enable,tx_cnt,tx_size,tx_delay);
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/* Initialize the Tx Data buffer */
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memset(&Tx_data[0],0,MAX_TX_DATA + sizeof(wp_tdm_api_rx_hdr_t));
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/* Cast the Tx data packet with the tx element
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* structure. We must insert a 16 byte
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* driver header, which driver will remove
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* before passing packet out the physical port */
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api_tx_el = (wp_tdm_api_tx_element_t*)&Tx_data[0];
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/* Create a Tx packet based on user info, or
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* by deafult incrementing number starting from 0 */
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for (i=0;i<Tx_length;i++){
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if (tx_data == -1){
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api_tx_el->data[i] = (unsigned char)i;
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}else{
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#if 0
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api_tx_el->data[i] = (unsigned char)tx_data+(i%4);
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#else
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api_tx_el->data[i] = (unsigned char)tx_data;
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#endif
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}
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}
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/* Main Rx Tx OOB routine */
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for(;;) {
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/* Initialize all select() descriptors */
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FD_ZERO(&ready);
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FD_ZERO(&write);
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FD_ZERO(&oob);
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FD_SET(dev_fd,&oob);
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FD_SET(dev_fd,&ready);
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if (write_enable){
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FD_SET(dev_fd,&write);
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}
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/* Select will block, until:
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* 1: OOB event, link level change
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* 2: Rx data available
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* 3: Interface able to Tx */
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if(select(dev_fd + 1,&ready, &write, &oob, NULL)){
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fflush(stdout);
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if (FD_ISSET(dev_fd,&oob)){
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/* An OOB event is pending, usually indicating
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* a link level change */
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err=sangoma_tdm_read_event(dev_fd,&tdm_api);
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if(err < 0 ) {
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printf("Failed to receive OOB %i , %i\n", Rx_count, err);
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err = ioctl(dev_fd,SIOC_WANPIPE_SOCK_STATE,0);
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printf("Sock state is %s\n",
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(err == 0) ? "CONNECTED" :
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(err == 1) ? "DISCONNECTED" :
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"CONNECTING");
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break;
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}
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printf("GOT OOB EXCEPTION CMD Exiting\n");
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}
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if (FD_ISSET(dev_fd,&ready)){
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/* An Rx packet is pending
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* 1: Read the rx packet into the Rx_data
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* buffer. Confirm len > 0
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*
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* 2: Cast Rx_data to the api_rx_element.
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* Thus, removing a 16 byte header
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* attached by the driver.
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*
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* 3. Check error_flag:
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* CRC,Abort..etc
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*/
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memset(Rx_data, 0, sizeof(Rx_data));
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err = sangoma_readmsg_tdm(dev_fd,
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Rx_data,
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sizeof(wp_tdm_api_rx_hdr_t),
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&Rx_data[sizeof(wp_tdm_api_rx_hdr_t)],
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MAX_RX_DATA, 0);
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if (!read_enable){
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goto bitstrm_skip_read;
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}
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/* err indicates bytes received */
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if(err <= 0) {
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printf("\nError receiving data\n");
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break;
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}
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api_rx_el = (wp_tdm_api_rx_element_t*)&Rx_data[0];
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/* Check the packet length */
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Rx_lgth = err;
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if(Rx_lgth<=0) {
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printf("\nShort frame received (%d)\n",
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Rx_lgth);
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return;
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}
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#if 0
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if (api_rx_el->data[0] == tx_data && api_rx_el->data[1] == (tx_data+1)){
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if (!stream_sync){
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printf("GOT SYNC %x\n",api_rx_el->data[0]);
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}
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stream_sync=1;
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}else{
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if (stream_sync){
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printf("OUT OF SYNC: %x\n",api_rx_el->data[0]);
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}
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}
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#endif
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++Rx_count;
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if (verbose){
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printf("Received %i Length = %i\n",
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Rx_count,Rx_lgth);
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#if 1
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printf("Data: ");
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for(i=0;i<Rx_lgth; i ++) {
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printf("0x%02X ", api_rx_el->data[i]);
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}
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printf("\n");
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#endif
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}else{
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//putchar('R');
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}
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#if 0
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if (Rx_count == 100){
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sangoma_tdm_set_codec(dev_fd,&tdm_api,WP_SLINEAR);
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sangoma_get_full_cfg(dev_fd, &tdm_api);
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}
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if (Rx_count == 200){
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sangoma_tdm_set_codec(dev_fd,&tdm_api,WP_NONE);
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sangoma_get_full_cfg(dev_fd, &tdm_api);
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}
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if (Rx_count == 300){
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sangoma_tdm_set_usr_period(dev_fd,&tdm_api,20);
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sangoma_get_full_cfg(dev_fd, &tdm_api);
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}
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if (Rx_count == 400){
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sangoma_tdm_set_codec(dev_fd,&tdm_api,WP_SLINEAR);
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sangoma_get_full_cfg(dev_fd, &tdm_api);
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}
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if (Rx_count == 500){
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sangoma_tdm_set_usr_period(dev_fd,&tdm_api,10);
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sangoma_get_full_cfg(dev_fd, &tdm_api);
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}
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memset(Rx_data,0,Rx_lgth+sizeof(wp_tdm_api_rx_hdr_t));
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sangoma_writemsg_tdm(dev_fd,
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Rx_data,16,
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&Rx_data[16], Rx_lgth,
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0);
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#endif
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#if 0
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if (Rx_count == 200){
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sangoma_tdm_set_codec(dev_fd,WP_SLINEAR);
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sangoma_get_full_cfg(dev_fd);
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}
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if (Rx_count == 400){
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sangoma_tdm_set_hw_period(dev_fd,20);
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sangoma_get_full_cfg(dev_fd);
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}
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if (Rx_count == 600){
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sangoma_tdm_set_codec(dev_fd,WP_NONE);
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sangoma_get_full_cfg(dev_fd);
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}
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#endif
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if (rx_cnt > 0 && Rx_count >= rx_cnt){
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break;
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}
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bitstrm_skip_read:
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;
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}
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if (FD_ISSET(dev_fd,&write)){
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err = sangoma_writemsg_tdm(dev_fd,
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Tx_data,16,
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&Tx_data[16], Tx_length,
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0);
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if (err <= 0){
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if (errno == EBUSY){
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if (verbose){
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printf("Sock busy try again!\n");
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}
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/* Socket busy try sending again !*/
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}else{
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printf("Faild to send %i \n",errno);
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perror("Send: ");
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break;
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}
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}else{
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++Tx_count;
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if (verbose){
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printf("Packet sent: Sent %i : %i\n",
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err,Tx_count);
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}else{
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//putchar('T');
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}
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}
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}
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if (tx_delay){
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usleep(tx_delay);
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}
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if (tx_cnt && tx_size && Tx_count >= tx_cnt && !(files_used & TX_FILE_USED)){
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write_enable=0;
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if (rx_cnt > 0){
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/* Dont break let rx finish */
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}else{
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break;
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}
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}
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}
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}
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if (tx_fd){
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fclose(tx_fd);
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}
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if (rx_fd){
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fclose(rx_fd);
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}
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close (dev_fd);
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}
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int rbs_event (int fd, unsigned char rbs_bits)
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{
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printf("%d: GOT RBS EVENT: RBS BITS=0x%X\n",
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fd,rbs_bits);
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return 0;
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}
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/***************************************************************
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* Main:
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*
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* o Make a socket connection to the driver.
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* o Call handle_span_chan() to read the socket
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*
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**************************************************************/
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int main(int argc, char* argv[])
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{
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int proceed;
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proceed=init_args(argc,argv);
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if (proceed != WAN_TRUE){
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usage(argv[0]);
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return -1;
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}
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signal(SIGINT,&sig_end);
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memset(&tdm_api,0,sizeof(tdm_api));
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dev_fd =-1;
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dev_fd = sangoma_open_tdmapi_span_chan(atoi(card_name),atoi(if_name));
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if( dev_fd < 0){
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printf("Failed to open span chan\n");
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exit (1);
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}
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printf("HANDLING SPAN %i CHAN %i FD=%i\n",
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atoi(card_name),atoi(if_name),dev_fd);
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sangoma_tdm_set_codec(dev_fd,&tdm_api,WP_NONE);
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sangoma_get_full_cfg(dev_fd, &tdm_api);
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handle_span_chan();
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close(dev_fd);
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return 0;
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return 0;
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};
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void sig_end(int sigid)
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{
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printf("Got Signal %i\n",sigid);
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if (tx_fd){
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fclose(tx_fd);
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}
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if (rx_fd){
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fclose(rx_fd);
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}
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if (dev_fd){
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close (dev_fd);
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}
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exit(1);
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}
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