/*
 * Mausezahn - A fast versatile traffic generator
 * Copyright (C) 2008 Herbert Haas
 * 
 * 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; if not, see http://www.gnu.org/licenses/gpl-2.0.html
 * 
*/



#include "mz.h"
#include "cli.h"
#include "mops.h"

#define MZ_RTP_HELP \
   		"| RTP type: Send Real Time Protocol packets.\n" \
		"|\n" \
		"| This mode is solely intended to conduct delay, drop, and jitter measurements in\n" \
		"| Voice (Video) over IP networks. You will typically initiate another Mausezahn\n" \
		"| instance on the destination host, which will perform the measurements or even\n" \
		"| 'bounce back' the packets for Round Trip Time (RTT) measurements.\n" \
		"|\n" \
		"| When the delay parameter is not specified, the default (inter-packet) delay is\n" \
		"| set to 20 msec. You must specify the destination host using the -B option.\n" \
		"| The default destination port is (UDP) 30000 but can be overridden (dp parameter).\n" \
		"| You do not need to specify the count option (-c), because 'infinite' (0) is assumed.\n" \
		"|\n" \
		"| You can specify these additional GENERAL options:\n" \
		"|\n" \
		"|  -c <count>     ..... use this packet count value instead of infinity.\n" \
		"|  -d <delay>     ..... use this delay value instead of the defaul. Per default\n" \
		"|                       the units are microseconds but you can also use msec or sec\n" \
		"|\n" \
		"| You can specify these additional UDP/RTP-specific arguments:\n" \
		"|\n" \
		"|   dp    = <1-65535> ..... use this UDP destination port instead of 30,000.\n" \
		"|   sp    = <1-65535> ..... use this UDP source port instead of random.\n" \
		"|   ssrc  = XX:XX:XX:XX ... use this hex sequence as stream identifier\n" \
		"|                           (=SSRC, required for multiple concurrent measurements)\n" \
                "|   codec             ..... simulate G.711 codec (other will follow).\n" \
		"|   pld = <1..1000> ....... create specified payload size (default=160 bytes, which results\n" \
		"|                           in a total datagram length of 180 bytes, considering the UDP and\n" \
		"|                           RTP header lengths (8 and 12 bytes, respectively).\n" \
		"|\n" \
                "| Additional help: enter 'mz -T rtp help'\n" \
		"|\n"



int create_rtp_packet()
{
	u_int8_t byte1,	byte2;
	u_int16_t seqnr;
	u_int8_t ssrc[4] = {0,0,0,0} ;
	int ssrc_s = 0;
	u_int8_t *ptr;
	char argval[MAX_PAYLOAD_SIZE];
	unsigned int rtp_payload_size=160;
	struct mz_timestamp ts;
	
	if ( (getarg(tx.arg_string,"help", NULL)==1) && (mode==RTP) ) {
		if (mz_port)
		{
			cli_print(gcli, "%s", MZ_RTP_HELP);
			return -1;
		}
		else
		{
			
			fprintf(stderr,"\n" 
				MAUSEZAHN_VERSION
				"\n%s", MZ_RTP_HELP);
			exit(0);
		}
	}
	
	
	if (getarg(tx.arg_string,"pld", argval)==1) {
		rtp_payload_size = (unsigned int) str2int(argval);
	}
	
	if (getarg(tx.arg_string,"codec", argval)==1) {
		tx.delay = 20000;
	}

	if (getarg(tx.arg_string,"ssrc", argval)==1) {
		ssrc_s = str2hex(argval, ssrc, 4);
		if (ssrc_s<0) {
			fprintf(stderr, " mz/rtp: invalid ssrc!\n");
			return -1;
		}
	}

   // TODO: Optional arguments for RTP
   
   
   // Create header: //

   // Byte 1    
   // 
   // +--+--+--+--+--+--+--+--+
   // | ver | P| X| CSRC Count|
   // +--+--+--+--+--+--+--+--+
   // 
   // Default: ver=2, Padding=0, Extension_Header=1, CSRC_Count=0 => 10 0 1 0000 = 0x90

	byte1 = 0x90;
   
   // Byte 2
   // 
   // +--+--+--+--+--+--+--+--+
   // | M|    Payload Type    |
   // +--+--+--+--+--+--+--+--+
   // 
   // Marker=0, Payload Type=0 (or 8 alternatively)

	byte2 = 0x00;
   
   // Bytes 3,4
   // 
   // +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
   // |               Sequence Number                 |
   // +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

	seqnr = 0x0000;
   
   // Bytes 5,6,7,8
   // 
   //	Timestamp  /* done below */
   //
   
   
   // Bytes 9,10,11,12
   //
   //   Synchronization Source Identifier
   // 
   
	if (ssrc_s==0) str2hex("ca:fe:fe:ed", ssrc, 4);
	
   // Bytes 13,14,15,16
   // 
   //     CSRC - Contributing Source Identifiers (optional, only used by mixers)
   //
   //   csrc = 0x00000000; 
   
   // Bytes 17,18,19,20
   // 
   //   Header Extension (optional) NOT USED HERE!
   // 

   // !!! Thus payload begins with index 16 in a C array !!!

   // ------------ Now combine all fields: ----------------
   tx.udp_payload[0] = byte1;
   tx.udp_payload[1] = byte2;
   
   ptr = (u_int8_t*) &seqnr;
   tx.udp_payload[2] = *(ptr+1);
   tx.udp_payload[3] = *ptr;
   
   // TIMESTAMP: will be linearly increased, e.g. using 20msec G.711: 0, 160, 320, ...
   tx.udp_payload[4] = 0x00;
   tx.udp_payload[5] = 0x00;
   tx.udp_payload[6] = 0x00;
   tx.udp_payload[7] = 0x00;

   tx.udp_payload[8] = ssrc[0];
   tx.udp_payload[9] = ssrc[1];
   tx.udp_payload[10] = ssrc[2];
   tx.udp_payload[11] = ssrc[3];
   
   /*
   ptr = (u_int8_t*) &csrc;
   tx.udp_payload[12] = *(ptr+3);
   tx.udp_payload[13] = *(ptr+2);
   tx.udp_payload[14] = *(ptr+1);
   tx.udp_payload[15] = *ptr;
   */
   
   // Add the NEW Mausezahn extension header (see mops_ext_rtp.c)
   tx.udp_payload[12] = 0xca;  // identifier
   tx.udp_payload[13] = 0xca;
   tx.udp_payload[14] = 0x00;
   tx.udp_payload[15] = 0x04;  // length
   getcurtime(&ts); // Now add TX timestamp:
   mops_hton4 ((u_int32_t*) &ts.sec,  &tx.udp_payload[16]);
   mops_hton4 ((u_int32_t*) &ts.nsec, &tx.udp_payload[20]);
   // NOTE: The remaining 8 bytes of this extension header are set to zero
   // via the following code.
   
   memset(&tx.udp_payload[24], 0x00, (rtp_payload_size-12)); // payload (considering our 8 byte timestamp)
   tx.udp_payload_s = 12 + rtp_payload_size; // the latter ist the payload size
   
   // ---------- now hand over to UDP -----------------

   tx.dp = 30000;
   tx.sp = 30000;
     
   tx.udp_len = 8 + tx.udp_payload_s;
   
   return 0;
}





/usb/phy/phy-twl6030-usb.c?h=nds-private-remove&amp;id=cd44691f7177b2c1e1509d1a17d9b198ebaa34eb'>cd44691f7177b2c1e1509d1a17d9b198ebaa34eb</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/phy/phy-twl6030-usb.c?h=nds-private-remove&amp;id=3f67790d2b7e322bcf363ec717085dd78c3ea7cd&amp;id2=cd44691f7177b2c1e1509d1a17d9b198ebaa34eb'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/phy/phy-twl6030-usb.c?h=nds-private-remove&amp;id=206c4720092d2a24bfefc041b377e889a220ffbf'>206c4720092d2a24bfefc041b377e889a220ffbf</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/phy/phy-twl6030-usb.c?h=nds-private-remove&amp;id=3f67790d2b7e322bcf363ec717085dd78c3ea7cd&amp;id2=206c4720092d2a24bfefc041b377e889a220ffbf'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'regulator-fix-v4.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator</div><div class='commit-msg'>Pull regulator fixes from Mark Brown:
 "Three changes here: two run of the mill driver specific fixes and a
  change from Mark Rutland which reverts some new device specific ACPI
  binding code which was added during the merge window as there are
  concerns about this sending the wrong signal about usage of regulators
  in ACPI systems"

* tag 'regulator-fix-v4.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: fixed: Revert support for ACPI interface
  regulator: axp20x: AXP806: Fix dcdcb being set instead of dcdce
  regulator: twl6030: fix range comparison, allowing vsel = 59
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=3f67790d2b7e322bcf363ec717085dd78c3ea7cd'>Diffstat</a> (limited to 'drivers/usb/phy/phy-twl6030-usb.c')</div><table summary='diffstat' class='diffstat'>