#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# update-oui.py -- update netsniff-ng oui.conf from official IEEE OUI list
#
# Copyright (C) 2013 Tobias Klauser <tklauser@distanz.ch>
#
# 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.

import os
import sys
import re
import getopt
try:
    from urllib2 import urlopen             # Python 2.x
except ImportError:
    from urllib.request import urlopen      # Python 3.x

DEFAULT_OUPUT_FILE = "oui.conf"
DEFAULT_OUI_URL = "http://standards.ieee.org/develop/regauth/oui/oui.txt"

OUI_PATTERN = re.compile(b"^\s*([a-fA-F0-9]{2})-([a-fA-F0-9]{2})-([a-fA-F0-9]{2})\s+\(hex\)\s+(.*)$")

def usage():
    print("""usage: {0} [OPTION...]
available options:
    -f  force overwrite of existing file
    -o  set output file (default: {1})
    -u  set URL to fetch OUI list from (default: {2})
    -h  show this help and exit""".format(os.path.basename(sys.argv[0]),
                                          DEFAULT_OUPUT_FILE, DEFAULT_OUI_URL))

def main():
    try:
        opts, args = getopt.getopt(sys.argv[1:], "fo:u:h")
    except getopt.GetoptError as err:
        print(str(err))
        usage()
        sys.exit(-1)

    overwrite = False
    output_file = DEFAULT_OUPUT_FILE
    oui_url = DEFAULT_OUI_URL
    for o, a in opts:
        if o == '-f':
            overwrite = True
        elif o == '-o':
            output_file = a
        elif o == '-u':
            oui_url = a
        elif o == '-h':
            usage()
            sys.exit(0)
        else:
            assert False, "unhandled option"

    if not overwrite and os.path.exists(output_file):
        print("Error: output file {} already exists".format(output_file))
        sys.exit(-1)

    print("Updating OUI information in {} from {}... ".format(output_file, oui_url))

    fh_file = open(output_file, 'w')
    fh_url = urlopen(oui_url)

    n = 0
    for line in fh_url:
        m = OUI_PATTERN.match(line)
        if m:
            fh_file.write("0x{}{}{}, {}\n".format(m.group(1), m.group(2), m.group(3), m.group(4)))
            n += 1

    print("{} OUIs written to {}".format(n, output_file))

    fh_url.close()
    fh_file.close()

if __name__ == '__main__':
    main()
remove'/><input type='hidden' name='id' value='7d2c0d643244311d0ce04fde373cd371ad1f1cad'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='7d2c0d643244311d0ce04fde373cd371ad1f1cad'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><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>Jitendra Bhivare &lt;jitendra.bhivare@broadcom.com&gt;</td><td class='right'>2016-10-13 12:08:49 +0530</td></tr>
<tr><th>committer</th><td>Martin K. Petersen &lt;martin.petersen@oracle.com&gt;</td><td class='right'>2016-10-17 13:35:31 -0400</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=7d2c0d643244311d0ce04fde373cd371ad1f1cad'>7d2c0d643244311d0ce04fde373cd371ad1f1cad</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=7d2c0d643244311d0ce04fde373cd371ad1f1cad'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=7d2c0d643244311d0ce04fde373cd371ad1f1cad'>1037a18596a8b577d54136212782415ceef309ec</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=4fa507992f0a1063d7326abaf705f9408548349e'>4fa507992f0a1063d7326abaf705f9408548349e</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=7d2c0d643244311d0ce04fde373cd371ad1f1cad&amp;id2=4fa507992f0a1063d7326abaf705f9408548349e'>diff</a>)</td></tr></table>
<div class='commit-subject'>scsi: be2iscsi: Replace _bh with _irqsave/irqrestore</div><div class='commit-msg'>[ 3843.132217] WARNING: CPU: 20 PID: 1227 at kernel/softirq.c:150 __local_bh_enable_ip+0x6b/0x90
[ 3843.142815] Modules linked in:
...
[ 3843.294328] CPU: 20 PID: 1227 Comm: kworker/20:1H Tainted: G            E   4.8.0-rc1+ #3
[ 3843.304944] Hardware name: Dell Inc. PowerEdge R720/0X6H47, BIOS 1.4.8 10/25/2012
[ 3843.314798] Workqueue: kblockd blk_timeout_work
[ 3843.321350]  0000000000000086 00000000a32f4533 ffff8802216d7bd8 ffffffff8135c3cf
[ 3843.331146]  0000000000000000 0000000000000000 ffff8802216d7c18 ffffffff8108d661
[ 3843.340918]  00000096216d7c50 0000000000000200 ffff8802d07cc828 ffff8801b3632550
[ 3843.350687] Call Trace:
[ 3843.354866]  [&lt;ffffffff8135c3cf&gt;] dump_stack+0x63/0x84
[ 3843.362061]  [&lt;ffffffff8108d661&gt;] __warn+0xd1/0xf0
[ 3843.368851]  [&lt;ffffffff8108d79d&gt;] warn_slowpath_null+0x1d/0x20
[ 3843.376791]  [&lt;ffffffff810930eb&gt;] __local_bh_enable_ip+0x6b/0x90
[ 3843.384903]  [&lt;ffffffff816fe7be&gt;] _raw_spin_unlock_bh+0x1e/0x20
[ 3843.392940]  [&lt;ffffffffa085f710&gt;] beiscsi_alloc_pdu+0x2f0/0x6e0 [be2iscsi]
[ 3843.402076]  [&lt;ffffffffa06bc358&gt;] __iscsi_conn_send_pdu+0xf8/0x370 [libiscsi]
[ 3843.411549]  [&lt;ffffffffa06bc6fe&gt;] iscsi_send_nopout+0xbe/0x110 [libiscsi]
[ 3843.420639]  [&lt;ffffffffa06bd98b&gt;] iscsi_eh_cmd_timed_out+0x29b/0x2b0 [libiscsi]
[ 3843.430339]  [&lt;ffffffff814cd1de&gt;] scsi_times_out+0x5e/0x250
[ 3843.438119]  [&lt;ffffffff813374af&gt;] blk_rq_timed_out+0x1f/0x60
[ 3843.446009]  [&lt;ffffffff8133759d&gt;] blk_timeout_work+0xad/0x150
[ 3843.454010]  [&lt;ffffffff810a6642&gt;] process_one_work+0x152/0x400
[ 3843.462114]  [&lt;ffffffff810a6f35&gt;] worker_thread+0x125/0x4b0
[ 3843.469961]  [&lt;ffffffff810a6e10&gt;] ? rescuer_thread+0x380/0x380
[ 3843.478116]  [&lt;ffffffff810aca28&gt;] kthread+0xd8/0xf0
[ 3843.485212]  [&lt;ffffffff816fedff&gt;] ret_from_fork+0x1f/0x40
[ 3843.492908]  [&lt;ffffffff810ac950&gt;] ? kthread_park+0x60/0x60
[ 3843.500715] ---[ end trace 57ec0a1d8f0dd3a0 ]---
[ 3852.328667] NMI watchdog: Watchdog detected hard LOCKUP on cpu 1Kernel panic - not syncing: Hard LOCKUP

blk_timeout_work takes queue_lock spin_lock with interrupts disabled
before invoking iscsi_eh_cmd_timed_out. This causes a WARN_ON_ONCE in
spin_unlock_bh for wrb_lock/io_sgl_lock/mgmt_sgl_lock.

CPU was kept busy in lot of bottom half work with interrupts disabled
thus causing hard lock up.

Signed-off-by: Jitendra Bhivare &lt;jitendra.bhivare@broadcom.com&gt;
Reviewed-by: Hannes Reinecke &lt;hare@suse.com&gt;
Reviewed-by: Chris Leech &lt;cleech@redhat.com&gt;
Signed-off-by: Martin K. Petersen &lt;martin.petersen@oracle.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=7d2c0d643244311d0ce04fde373cd371ad1f1cad'>Diffstat</a></div><table summary='diffstat' class='diffstat'>