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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/1410/">https://reviewboard.asterisk.org/r/1410/</a>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Here is a explanation of the problem and logic behind this fix.</pre>
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<a href="https://reviewboard.asterisk.org/r/1410/diff/1/?file=19942#file19942line7880" style="color: black; font-weight: bold; text-decoration: underline;">/branches/1.8/channels/chan_misdn.c</a>
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(Diff revision 1)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static struct ast_channel *misdn_request(const char *type, format_t format, const struct ast_channel *requestor, void *data, int *cause)</pre></td>
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<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">for</span> <span class="p">(</span><span class="n">port</span> <span class="o">=</span> <span class="n">misdn_cfg_get_next_port_spin</span><span class="p">(</span><span class="n">rr</span><span class="o">-></span><span class="n">port</span><span class="p">);</span> <span class="n">port</span> <span class="o">></span> <span class="mi">0</span> <span class="o">&&</span> <span class="n">port</span> <span class="o">!=</span> <span class="n">port_start</span><span class="p">;</span></pre></td>
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<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">port</span> <span class="o">=</span> <span class="n">misdn_cfg_get_next_port_spin</span><span class="p">(</span><span class="n">port</span><span class="p">))</span> <span class="p">{</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n"><span class="hl">port_sta</span>rt</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">rr</span><span class="o">-></span><span class="n">port</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">port_start</span> <span class="o">=</span> <span class="n">port</span><span class="p">;</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">rr</span><span class="o">-></span><span class="n">port</span> <span class="o">=</span> <span class="n">misdn_cfg_get_next_port_spin</span><span class="p">(</span><span class="mi">0</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="n">port</span> <span class="o">>=</span> <span class="n">port_start</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">rr</span><span class="o">-></span><span class="n">channel</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="hl"> </span><span class="n"><span class="hl">next_</span>chan</span> <span class="o">=</span> <span class="mi">1</span><span class="p">;</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n"><span class="hl">rr</span></span><span class="o"><span class="hl">-></span></span><span class="n">chan<span class="hl">nel</span></span> <span class="o">=</span> <span class="mi">1</span><span class="p">;</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="n">port</span> <span class="o"><=</span> <span class="n">port_start</span> <span class="o">&&</span> <span class="n">next_chan</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">bchan_start</span> <span class="o">=</span> <span class="n">rr</span><span class="o">-></span><span class="n">channel</span><span class="p">;</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="kt">int</span> <span class="n">maxbchans</span> <span class="o">=</span> <span class="n">misdn_lib_get_maxchans</span><span class="p">(</span><span class="n">port</span><span class="p">);</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">port_start</span> <span class="o">=</span> <span class="n">rr</span><span class="o">-></span><span class="n">port</span><span class="p">;</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">do</span> <span class="p">{</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="o">++</span><span class="n">robin_channel</span> <span class="o">>=</span> <span class="n">maxbchans</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">misdn_cfg_get</span><span class="p">(</span><span class="n">rr</span><span class="o">-></span><span class="n">port</span><span class="p">,</span> <span class="n">MISDN_CFG_GROUPNAME</span><span class="p">,</span> <span class="n">cfg_group</span><span class="p">,</span> <span class="k">sizeof</span><span class="p">(</span><span class="n">cfg_group</span><span class="p">));</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">robin_channel</span> <span class="o">=</span> <span class="mi">1</span><span class="p">;</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="n">strcasecmp</span><span class="p">(</span><span class="n">cfg_group</span><span class="p">,</span> <span class="n">group</span><span class="p">))</span> <span class="p">{</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">rr</span><span class="o">-></span><span class="n">port</span> <span class="o">=</span> <span class="n">misdn_cfg_get_next_port_spin</span><span class="p">(</span><span class="n">rr</span><span class="o">-></span><span class="n">port</span><span class="p">);</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="hl"> </span><span class="n"><span class="hl">next_</span>chan</span> <span class="o">=</span> <span class="mi"><span class="hl">0</span></span><span class="p">;</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n"><span class="hl">rr</span></span><span class="o"><span class="hl">-></span></span><span class="n">chan<span class="hl">nel</span></span> <span class="o">=</span> <span class="mi"><span class="hl">1</span></span><span class="p">;</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">continue</span><span class="p">;</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">1)the port is always bounced on entering the loop and on each iteration this prevents all channels on a port been checked.
2)robin_channel on a BRI [maxbchans=2] will always be 1 and 2 channel will never be checked after the first time if rr->channel = 1
i have fixed this by checking all channels on a up port before moving to the next port and if a channel is chosen the next channel/port will be started with on next rotation.
the change also makes the loop more efficient instead of starting all over it checks all channels on active port.</pre>
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<p>- irroot</p>
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<p>On September 4th, 2011, 6:58 a.m., irroot wrote:</p>
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<div>Review request for Asterisk Developers.</div>
<div>By irroot.</div>
<p style="color: grey;"><i>Updated Sept. 4, 2011, 6:58 a.m.</i></p>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">It seems that only one channel per port is allowed to be used in round robin. this is wrong
it should go from port to port and all channels in the port.
on single port devices round robin would never work it now does.
it needs to remember what port / channel to use next.
i have redone the whole section</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I have now tested this more extensivly with single HFC dongle and digium 4 port card.
the last port / channel is retained and the routine rotates both channels and ports as expected.
previously only one channel per port was taken into account for routing calls.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/branches/1.8/channels/chan_misdn.c <span style="color: grey">(334220)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/1410/diff/" style="margin-left: 3em;">View Diff</a></p>
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