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<a href="https://gitlab.rtems.org/yangn0">Ning Yang</a> created an issue: <a href="https://gitlab.rtems.org/rtems/pkg/rtems-libbsd/-/issues/18">#18</a>
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<a href="#summary" aria-hidden="true" class="anchor" id="user-content-summary" style="margin-top: 0; float: left; margin-left: -20px; text-decoration: none; outline: none;"></a>Summary</h2>
<p dir="auto" style="color: #28272d; margin: 0 0 16px;" align="initial">When I tested the genet driver, I encountered this issue.</p>
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<li style="margin-top: 0; line-height: 1.6em; margin-left: 25px; padding-left: 3px;">I use the following command on my PC to test <code style='font-size: 90%; color: #18171d; word-wrap: break-word; background-color: #ececef; border-radius: .25rem; margin-top: 0; font-family: "GitLab Mono","JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; vertical-align: bottom; white-space: pre-wrap; overflow-wrap: break-word; word-break: keep-all; padding: 2px 4px;'>tx</code>. It works very well.</li>
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<pre class="code highlight js-syntax-highlight language-plaintext" v-pre="true" style='display: block; font-size: 14px; color: #28272d; line-height: 1.6em; overflow-x: auto; border-radius: .25rem; position: relative; font-family: "GitLab Mono","JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; margin: 0 0 16px; padding: 12px; border: 1px solid #dcdcde;'><code style='font-size: inherit; color: inherit; word-wrap: normal; word-break: keep-all; background-color: inherit; border-radius: .25rem; white-space: pre; margin-top: 0; font-family: "GitLab Mono","JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; vertical-align: bottom; overflow-wrap: normal; padding: unset;'><span id="LC1" class="line" lang="plaintext" style="margin-top: 0;">yangn0@yangning-PC:~$ sudo curl -o /dev/null ftp://192.168.1.100/dev/zero</span>
<span id="LC2" class="line" lang="plaintext">[sudo] password for yangn0:</span>
<span id="LC3" class="line" lang="plaintext"> % Total % Received % Xferd Average Speed Time Time Time Current</span>
<span id="LC4" class="line" lang="plaintext"> Dload Upload Total Spent Left Speed</span>
<span id="LC5" class="line" lang="plaintext"> 0 0 0 987M 0 0 50.6M 0 --:--:-- 0:00:19 --:--:-- 50.6M^C</span></code></pre>
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<li style="margin-top: 0; line-height: 1.6em; margin-left: 25px; padding-left: 3px;">I use the following command on my PC to test <code style='font-size: 90%; color: #18171d; word-wrap: break-word; background-color: #ececef; border-radius: .25rem; margin-top: 0; font-family: "GitLab Mono","JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; vertical-align: bottom; white-space: pre-wrap; overflow-wrap: break-word; word-break: keep-all; padding: 2px 4px;'>rx</code>. After transmitting a small amount of data, the Current Speed drops to 0. And
rtems shell printed <code style='font-size: 90%; color: #18171d; word-wrap: break-word; background-color: #ececef; border-radius: .25rem; font-family: "GitLab Mono","JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; vertical-align: bottom; white-space: pre-wrap; overflow-wrap: break-word; word-break: keep-all; padding: 2px 4px;'>[zone: mbuf_cluster] kern.ipc.nmbclusters limit reached</code>.</li>
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<pre class="code highlight js-syntax-highlight language-plaintext" v-pre="true" style='display: block; font-size: 14px; color: #28272d; line-height: 1.6em; overflow-x: auto; border-radius: .25rem; position: relative; font-family: "GitLab Mono","JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; margin: 0 0 16px; padding: 12px; border: 1px solid #dcdcde;'><code style='font-size: inherit; color: inherit; word-wrap: normal; word-break: keep-all; background-color: inherit; border-radius: .25rem; white-space: pre; margin-top: 0; font-family: "GitLab Mono","JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; vertical-align: bottom; overflow-wrap: normal; padding: unset;'><span id="LC1" class="line" lang="plaintext" style="margin-top: 0;">yangn0@yangning-PC:~$ sudo curl -T /dev/zero ftp://192.168.1.100/dev/null</span>
<span id="LC2" class="line" lang="plaintext"> % Total % Received % Xferd Average Speed Time Time Time Current</span>
<span id="LC3" class="line" lang="plaintext"> Dload Upload Total Spent Left Speed</span>
<span id="LC4" class="line" lang="plaintext">100 10.6M 0 0 0 10.6M 0 448k --:--:-- 0:00:24 --:--:-- 0^C</span></code></pre>
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<p dir="auto" style="color: #28272d; margin: 0;" align="initial">RTEMS Shell:
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