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Add option to control ALTQ support for VTNET NICs #4733

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Add option to control ALTQ support for VTNET NICs #4733

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1a3773f
Changes hnaltqenable option to implement #16166
jakobsen-lrz May 15, 2025
0713f96
interfaces.inc: Changed is_altq_capable function to return false for …
jakobsen-lrz May 30, 2025
3721cd3
Merge branch 'master' into vtnet-deactivate-altq-option
jakobsen-lrz Nov 17, 2025
67b1d75
Updated feature branch vtnet-deactivate-altq-option for changes to ma…
jakobsen-lrz Nov 17, 2025
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7 changes: 6 additions & 1 deletion src/etc/inc/interfaces.inc
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Original file line number Diff line number Diff line change
Expand Up @@ -7063,9 +7063,14 @@ function is_altq_capable($int) {
"sis", "sk", "ste", "stge", "ti", "tun", "txp", "udav",
"ural", "vge", "vlan", "vmx", "vr", "vte", "vtnet", "xl");

// These drivers have optional ALTQ support, which can be disabled
$optionally_capable = array("hn", "vtnet");

$int_family = remove_ifindex($int);

if (in_array($int_family, $capable)) {
if (in_array($int_family, $capable) && !in_array($int_family, $optionally_capable)) {
return true;
} elseif (in_array($int_family, $optionally_capable) && config_path_enabled('system','hn_altq_enable')) {
return true;
} elseif (stristr($int, "l2tp")) { /* VLANs are named $parent_$vlan now */
return true;
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6 changes: 4 additions & 2 deletions src/etc/inc/pfsense-utils.inc
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Expand Up @@ -1324,10 +1324,13 @@ function setup_loader_settings($path = "", $upgrade = false) {
$data[] = 'vm.pmap.pti="0"';
}

/* Enable ALTQ support for hnX NICs. */
/* Enable ALTQ support for vtnetX/hnX NICs. */
if (config_path_enabled('system','hn_altq_enable')) {
$data[] = 'hw.hn.vf_transparent="0"';
$data[] = 'hw.hn.use_if_start="1"';
$data[] = 'hw.vtnet.altq_disable="0"';
} else {
$data[] = 'hw.vtnet.altq_disable="1"';
}

/* Set maximum send queue length. */
Expand Down Expand Up @@ -4672,7 +4675,6 @@ function remove_pppoe_cron_items(string $interface = '') {
}
}
}

/**
* Fixes a variety of configuration issues.
*/
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6 changes: 3 additions & 3 deletions src/usr/local/www/system_advanced_network.php
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Expand Up @@ -299,10 +299,10 @@

$section->addInput(new Form_Checkbox(
'hnaltqenable',
'hn ALTQ support',
'Enable the ALTQ support for hn NICs.',
'virtual NIC ALTQ support',
'Enable the ALTQ support for vtnet/hn NICs.',
$pconfig['hnaltqenable']
))->setHelp('Checking this option will enable the ALTQ support for hn NICs. '.
))->setHelp('Checking this option will enable the ALTQ support for vtnet/hn NICs. '.
'The ALTQ support disables the multiqueue API and may reduce the system '.
'capability to handle traffic. This will take effect after a machine reboot.');

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