/*
 * 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"


int transmit (struct cli_def *cli, const char *command, char *argv[], int argc)
{
   int i;
   char argstr[10000];

   argstr[0]='\0';
   
   if (argc>1)
     {
	for (i=1; i<argc; i++)
	  {
	     if ((strlen(argv[i])+strlen(argstr))>10000)
	       {
		  cli_print(cli, "Argument list too long!\n");
		  return CLI_OK;
	       }
	     if (strncmp(argv[i], "?", 1)==0)
	       {
		  strcat(argstr, ",help");
	       }
	     else
	       strncat(argstr, argv[i], 5000); // TODO: This is ugly!
	  }
	// TEST: cli_print(cli, "argc=%i, got '%s'\n", argc, argstr);
     }
   
   
   if (argv[0] == NULL) // raw hex string given
     {
	mode = BYTE_STREAM;
     }
   else if (strcmp(argv[0],"arp")==0)
     {
	mode = ARP;
     }
   else if (strcmp(argv[0],"bpdu")==0)
     {
	mode = BPDU;
     }
   else if (strcmp(argv[0],"ip")==0)
     {
	mode = IP;
     }
   else if (strcmp(argv[0],"udp")==0)
     {
	mode = UDP;
     }
   else if (strcmp(argv[0],"icmp")==0)
     {
	mode = ICMP;
     }
   else if (strcmp(argv[0],"tcp")==0)
     {
	mode = TCP;
     }
   else if (strcmp(argv[0],"dns")==0)
     {
	mode = DNS;
     }
   else if (strcmp(argv[0],"cdp")==0)
     {
	mode = CDP;
     }
   else if (strcmp(argv[0],"syslog")==0)
     {
	mode = SYSLOG;
     }
   else if (strcmp(argv[0],"lldp")==0)
     {
	mode = LLDP;
	tx.packet_mode=0; // create whole frame by ourself
     }
   else if (strcmp(argv[0],"rtp")==0)
     {
	mode = RTP;
     }
   else if (strcmp(argv[0],"raw")==0)
     {
	strncpy(tx.arg_string, argstr, MAX_PAYLOAD_SIZE);
	send_eth();
     }
   else if (strcmp(argv[0],"?")==0)
     {
	cli_print(cli, 
		"|  The following packet types are currently implemented:\n"
		"|\n"
		"|  arp            ... sends ARP packets\n"
		"|  bpdu           ... sends BPDU packets (STP)\n"
		"|  cdp            ... sends CDP messages\n"
		"|  ip             ... sends IPv4 packets\n"
		"|  udp            ... sends UDP datagrams\n"
		"|  tcp            ... sends TCP segments\n"
		"|  icmp           ... sends ICMP messages\n"
		"|  dns            ... sends DNS messages\n"
		"|  rtp            ... sends RTP datagrams\n"
		"|  syslog         ... sends Syslog messages\n"
		"|  lldp           ... sends LLDP datagrams\n"
		"|\n"
		"|  raw            ... raw layer 2 mode (specify whole frame in hex)\n"
		"\n"
		);
	return CLI_OK;	
     }
   else
     {
	cli_print(cli, "Unknown packet type '%s'\r", argv[0]);
     }


   if (mode)
     {
	strncpy(tx.arg_string, argstr, MAX_PAYLOAD_SIZE);
	tx_switch(cli);
     }
   
   return CLI_OK;
}
<option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Marek Vasut &lt;marex@denx.de&gt;</td><td class='right'>2016-04-18 18:30:05 +0200</td></tr>
<tr><th>committer</th><td>Jonathan Cameron &lt;jic23@kernel.org&gt;</td><td class='right'>2016-04-18 19:53:34 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=8e6cb470bac6b1e7afa4642a40a71f9bcd066242'>8e6cb470bac6b1e7afa4642a40a71f9bcd066242</a> (<a href='/cgit.cgi/linux/net-next.git/patch/Documentation?id=8e6cb470bac6b1e7afa4642a40a71f9bcd066242'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=8e6cb470bac6b1e7afa4642a40a71f9bcd066242'>194bd39267943e99474a0d80686303ae9a1c406c</a> /<a href='/cgit.cgi/linux/net-next.git/tree/Documentation?id=8e6cb470bac6b1e7afa4642a40a71f9bcd066242'>Documentation</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=05be8d4101d960bad271d32b4f6096af1ccb1534'>05be8d4101d960bad271d32b4f6096af1ccb1534</a> (<a href='/cgit.cgi/linux/net-next.git/diff/Documentation?id=8e6cb470bac6b1e7afa4642a40a71f9bcd066242&amp;id2=05be8d4101d960bad271d32b4f6096af1ccb1534'>diff</a>)</td></tr></table>
<div class='commit-subject'>iio:adc:at91-sama5d2: Repair crash on module removal</div><div class='commit-msg'>The driver never calls platform_set_drvdata() , so platform_get_drvdata()
in .remove returns NULL and thus $indio_dev variable in .remove is NULL.
Then it's only a matter of dereferencing the indio_dev variable to make
the kernel blow as seen below. This patch adds the platform_set_drvdata()
call to fix the problem.

root@armhf:~# rmmod at91-sama5d2_adc

Unable to handle kernel NULL pointer dereference at virtual address 000001d4
pgd = dd57c000
[000001d4] *pgd=00000000
Internal error: Oops: 5 [#1] ARM
Modules linked in: at91_sama5d2_adc(-)
CPU: 0 PID: 1334 Comm: rmmod Not tainted 4.6.0-rc3-next-20160418+ #3
Hardware name: Atmel SAMA5
task: dd4fcc40 ti: de910000 task.ti: de910000
PC is at mutex_lock+0x4/0x24
LR is at iio_device_unregister+0x14/0x6c
pc : [&lt;c05f4624&gt;]    lr : [&lt;c0471f74&gt;]    psr: a00d0013
               sp : de911f00  ip : 00000000  fp : be898bd8
r10: 00000000  r9 : de910000  r8 : c0107724
r7 : 00000081  r6 : bf001048  r5 : 000001d4  r4 : 00000000
r3 : bf000000  r2 : 00000000  r1 : 00000004  r0 : 000001d4
Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
Control: 10c53c7d  Table: 3d57c059  DAC: 00000051
Process rmmod (pid: 1334, stack limit = 0xde910208)
Stack: (0xde911f00 to 0xde912000)
1f00: bf000000 00000000 df5c7e10 bf000010 bf000000 df5c7e10 df5c7e10 c0351ca8
1f20: c0351c84 df5c7e10 bf001048 c0350734 bf001048 df5c7e10 df5c7e44 c035087c
1f40: bf001048 7f62dd4c 00000800 c034fb30 bf0010c0 c0158ee8 de910000 31397461
1f60: 6d61735f 32643561 6364615f 00000000 de911f90 de910000 de910000 00000000
1f80: de911fb0 10c53c7d de911f9c c05f33d8 de911fa0 00910000 be898ecb 7f62dd10
1fa0: 00000000 c0107560 be898ecb 7f62dd10 7f62dd4c 00000800 6f844800 6f844800
1fc0: be898ecb 7f62dd10 00000000 00000081 00000000 7f62dd10 be898bd8 be898bd8
1fe0: b6eedab1 be898b6c 7f61056b b6eedab6 000d0030 7f62dd4c 00000000 00000000
[&lt;c05f4624&gt;] (mutex_lock) from [&lt;c0471f74&gt;] (iio_device_unregister+0x14/0x6c)
[&lt;c0471f74&gt;] (iio_device_unregister) from [&lt;bf000010&gt;] (at91_adc_remove+0x10/0x3c [at91_sama5d2_adc])
[&lt;bf000010&gt;] (at91_adc_remove [at91_sama5d2_adc]) from [&lt;c0351ca8&gt;] (platform_drv_remove+0x24/0x3c)
[&lt;c0351ca8&gt;] (platform_drv_remove) from [&lt;c0350734&gt;] (__device_release_driver+0x84/0x110)
[&lt;c0350734&gt;] (__device_release_driver) from [&lt;c035087c&gt;] (driver_detach+0x8c/0x90)
[&lt;c035087c&gt;] (driver_detach) from [&lt;c034fb30&gt;] (bus_remove_driver+0x4c/0xa0)
[&lt;c034fb30&gt;] (bus_remove_driver) from [&lt;c0158ee8&gt;] (SyS_delete_module+0x110/0x1d0)
[&lt;c0158ee8&gt;] (SyS_delete_module) from [&lt;c0107560&gt;] (ret_fast_syscall+0x0/0x3c)
Code: e3520001 1affffd5 eafffff4 f5d0f000 (e1902f9f)
---[ end trace 86914d7ad3696fca ]---

Signed-off-by: Marek Vasut &lt;marex@denx.de&gt;
Cc: Ludovic Desroches &lt;ludovic.desroches@atmel.com&gt;
Cc: &lt;Stable@vger.kernel.org&gt;
Signed-off-by: Jonathan Cameron &lt;jic23@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=8e6cb470bac6b1e7afa4642a40a71f9bcd066242'>Diffstat</a> (limited to 'Documentation')</div><table summary='diffstat' class='diffstat'>