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em(4): Update and expand on hardware support

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This commit is contained in:
Kevin Bowling
2023-08-03 12:49:42 -07:00
parent 7bcdbacf84
commit 42ce724d80
1 changed files with 23 additions and 7 deletions
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share/man/man4/em.4
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@@ -31,7 +31,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd May 8, 2023
.Dd August 3, 2023
.Dt EM 4
.Os
.Sh NAME
@@ -55,21 +55,36 @@ if_em_load="YES"
.Sh DESCRIPTION
The
.Nm
driver provides support for PCI Gigabit Ethernet adapters based on
driver provides support for PCI/PCI-X Gigabit Ethernet adapters based on
the Intel 82540, 82541ER, 82541PI, 82542, 82543, 82544, 82545, 82546,
82546EB, 82546GB, 82547, 82571, 81572, 82573, and 82574 Ethernet
82546EB, 82546GB, 82547 controller chips.
.Pp
The
.Nm
driver provides support for PCI Express Gigabit Ethernet adapters
based on the Intel 82571, 81572, 82573, 82574, and 82583 Ethernet
controller chips.
.Pp
The
.Nm
driver also provides support for PCI Express Gigabit Ethernet adapters
based on the Intel 82575, 82576, 82580, i21x and i35x.
driver provides support for Gigabit Ethernet adapters connected to I/O
Controller Hub (ICH), Platform Controller Hub (PCH) and Connectivity
Integrated (CNVi) including Intel 80003ES2LAN, 82562, 82566, 82567,
82577, 82578, 82579, i217, i218, and i219.
.Pp
The
.Nm
driver provides support for PCI Express Gigabit Ethernet adapters
based on the Intel 82575, 82576, 82580, i210, i211, and i35x. These
appear as
.Cm igb
interfaces to maintain compatibility with existing infrastructure.
.Pp
The driver supports Transmit/Receive checksum offload and Jumbo Frames
on all but 82542-based adapters.
.Pp
Furthermore it supports TCP segmentation offload (TSO) on all adapters but
those based on the 82543, 82544 and 82547 controller chips.
those based on the 82542, 82543, 82544 and 82547 controller chips.
The identification LEDs of the adapters supported by the
.Nm
driver can be controlled via the
@@ -307,7 +322,8 @@ The
device driver first appeared in
.Fx 4.4 .
.Nm
was merged with the igb device driver and converted to the iflib framework in
was merged with the lem and igb device driver and converted to the iflib
framework in
.Fx 12.0 .
.Sh AUTHORS
.An -nosplit