cxgbe.4: Belated update to the man page to reflect T5 support.
MFC after: 1 day
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Navdeep Parhar
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=259569
@ -1,4 +1,4 @@
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.\" Copyright (c) 2011-2012, Chelsio Inc
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.\" Copyright (c) 2011-2013, Chelsio Inc
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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@ -31,12 +31,12 @@
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.\"
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.\" $FreeBSD$
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.\"
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.Dd February 25, 2012
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.Dd December 18, 2013
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.Dt CXGBE 4
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.Os
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.Sh NAME
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.Nm cxgbe
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.Nd "Chelsio T4 10Gb and 1Gb Ethernet adapter driver"
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.Nd "Chelsio T4 and T5 based 40Gb, 10Gb, and 1Gb Ethernet adapter driver"
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.Sh SYNOPSIS
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To compile this driver into the kernel,
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place the following lines in your
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@ -50,13 +50,14 @@ module at boot time, place the following lines in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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t4fw_cfg_load="YES"
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t5fw_cfg_load="YES"
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if_cxgbe_load="YES"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for PCI Express Ethernet adapters based on
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the Chelsio Terminator 4 (T4) ASIC.
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the Chelsio Terminator 4 and Terminator 5 ASICs (T4 and T5).
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The driver supports Jumbo Frames, Transmit/Receive checksum offload,
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TCP segmentation offload (TSO), Large Receive Offload (LRO), VLAN
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tag insertion/extraction, VLAN checksum offload, VLAN TSO, and
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@ -64,12 +65,51 @@ Receive Side Steering (RSS).
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For further hardware information and questions related to hardware
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requirements, see
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.Pa http://www.chelsio.com/ .
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.Pp
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Note that ports of T5 cards are named cxl and attach to a t5nex parent device
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(in contrast to ports named cxgbe that attach to a t4nex parent for a T4 card).
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Loader tunables with the hw.cxgbe prefix apply to both T4 and T5 cards.
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The sysctl MIBs are at dev.t5nex and dev.cxl for T5 cards and at dev.t4nex and
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dev.cxgbe for T4 cards.
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.Pp
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For more information on configuring this device, see
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.Xr ifconfig 8 .
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.Sh HARDWARE
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The
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.Nm
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driver supports 40Gb, 10Gb and 1Gb Ethernet adapters based on the T5 ASIC
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(ports will be named cxl):
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.Pp
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.Bl -bullet -compact
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.It
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Chelsio T580-CR
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.It
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Chelsio T580-LP-CR
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.It
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Chelsio T580-LP-SO-CR
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.It
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Chelsio T560-CR
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.It
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Chelsio T540-CR
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.It
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Chelsio T540-LP-CR
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.It
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Chelsio T522-CR
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.It
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Chelsio T520-LL-CR
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.It
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Chelsio T520-CR
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.It
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Chelsio T520-SO
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.It
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Chelsio T520-BT
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.It
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Chelsio T504-BT
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.El
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.Pp
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The
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.Nm
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driver supports 10Gb and 1Gb Ethernet adapters based on the T4 ASIC:
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.Pp
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.Bl -bullet -compact
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@ -139,8 +179,8 @@ by default (all values are in microseconds) and the index selects a
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value from this list.
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The default value is 1 for both 10Gb and 1Gb ports, which means the
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timer value is 5us.
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Different cxgbe interfaces can be assigned different values at any time via the
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dev.cxgbe.X.holdoff_tmr_idx sysctl.
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Different interfaces can be assigned different values at any time via the
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dev.cxgbe.X.holdoff_tmr_idx or dev.cxl.X.holdoff_tmr_idx sysctl.
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.It Va hw.cxgbe.holdoff_pktc_idx_10G
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.It Va hw.cxgbe.holdoff_pktc_idx_1G
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The packet-count index value to use to delay interrupts.
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@ -149,8 +189,8 @@ and the index selects a value from this list.
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The default value is -1 for both 10Gb and 1Gb ports, which means packet
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counting is disabled and interrupts are generated based solely on the
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holdoff timer value.
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Different cxgbe interfaces can be assigned different values via the
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dev.cxgbe.X.holdoff_pktc_idx sysctl.
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Different interfaces can be assigned different values via the
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dev.cxgbe.X.holdoff_pktc_idx or dev.cxl.X.holdoff_pktc_idx sysctl.
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This sysctl works only when the interface has never been marked up (as done by
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ifconfig up).
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.It Va hw.cxgbe.qsize_txq
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@ -161,16 +201,16 @@ software queuing.
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See
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.Xr ifnet 9 .
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The default value is 1024.
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Different cxgbe interfaces can be assigned different values via the
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dev.cxgbe.X.qsize_txq sysctl.
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Different interfaces can be assigned different values via the
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dev.cxgbe.X.qsize_txq sysctl or dev.cxl.X.qsize_txq sysctl.
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This sysctl works only when the interface has never been marked up (as done by
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ifconfig up).
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.It Va hw.cxgbe.qsize_rxq
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The size, in number of entries, of the descriptor ring used for an
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rx queue.
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The default value is 1024.
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Different cxgbe interfaces can be assigned different values via the
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dev.cxgbe.X.qsize_rxq sysctl.
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Different interfaces can be assigned different values via the
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dev.cxgbe.X.qsize_rxq or dev.cxl.X.qsize_rxq sysctl.
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This sysctl works only when the interface has never been marked up (as done by
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ifconfig up).
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.It Va hw.cxgbe.interrupt_types
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@ -231,6 +271,10 @@ The
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.Nm
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device driver first appeared in
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.Fx 9.0 .
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Support for T5 cards first appeared in
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.Fx 9.2
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and
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.Fx 10.0 .
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.Sh AUTHORS
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.An -nosplit
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The
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