From 2e0d2f95fe602fb746e4369bc6d8e2c3a836afa4 Mon Sep 17 00:00:00 2001 From: Felix Johnson Date: Sat, 26 Oct 2024 20:46:41 -0400 Subject: [PATCH] ix.4: document LOADER TUNABLES PR: 213026 Co-authored-by: Alexander Ziaee (cherry picked from commit a340b4649621f0dbc0607115217889909ce33bd1) --- share/man/man4/ix.4 | 39 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 38 insertions(+), 1 deletion(-) diff --git a/share/man/man4/ix.4 b/share/man/man4/ix.4 index 32b5386ea7d..4f90ded1e3e 100644 --- a/share/man/man4/ix.4 +++ b/share/man/man4/ix.4 @@ -86,6 +86,42 @@ Intel(R) 82598EB 10 Gigabit AF Network Connection .It Intel(R) 82598EB 10 Gigabit AT CX4 Network Connection .El +.Sh LOADER TUNABLES +The +.Nm +driver supports the following loader tunables: +.Bl -tag -width "hw.ix.allow_unsupported_sfp" +.It Va hw.ix.max_interrupt_rate +Maximum interrupts per second. +.It Va hw.ix.flow_control +Default flow control used for all adapters. +.It Va hw.ix.advertise_speed +Default advertised speed for all adapters. +.It Va hw.ix.enable_msix +Enable Message Signalled Interrupts (MSI-X). +.It Va hw.ix.allow_unsupported_sfp +Allow unsupported small form-factor pluggable +.Pq SFP +modules. +Use at your own risk. +.It Va hw.ix.enable_fdir +Enable Flow Director. +Flow Director directs Ethernet packets to the core where the +packet consuming process, application, container, +or microservice is running. +.It Va hw.ix.enable_rss +Enable Receive-Side Scaling (RSS). +When RSS is enabled, all of the receive data processing for +a particular TCP connection is shared across multiple processors +or processor cores. +Without RSS, all of the processing is performed by a single +processor, resulting in inefficient system cache utilization. +This has no effect if your system has only one processing unit. +.It Va hw.ix.enable_aim +Enable Adaptive Interrupt Moderation (AIM). +Vary the interrupt rate over time based on the traffic for +that interrupt vector. +.El .Sh DIAGNOSTICS .Bl -diag .It "ix%d: Unable to allocate bus resource: memory" @@ -113,7 +149,8 @@ issue to .Xr ng_ether 4 , .Xr polling 4 , .Xr vlan 4 , -.Xr ifconfig 8 +.Xr ifconfig 8 , +.Xr sysctl 8 .Sh HISTORY The .Nm