Updated: 2021/Apr/14

IXG(4)                       Device Drivers Manual                      IXG(4)

     ixg - Intel(R) 10Gb Ethernet driver

     ixg* at pci? dev ? function ?

     The ixg driver provides support for PCI 10Gb Ethernet adapters based on
     the Intel(R) 82598EB, 82599, X540 and X550 Ethernet Controllers.  The
     driver supports Jumbo Frames, TCP Segmentation Offload (TSO).

     For questions related to hardware requirements, refer to the
     documentation supplied with your Intel 10GbE adapter.  All hardware
     requirements listed apply to use with NetBSD.

     Support for Jumbo Frames is provided via the interface MTU setting.
     Selecting an MTU larger than 1500 bytes with the ifconfig(8) utility
     configures the adapter to receive and transmit Jumbo Frames.  On NetBSD,
     the maximum MTU size for Jumbo Frames is 9000 bytes.

     This driver version supports VLANs.  For information on enabling VLANs,
     see ifconfig(8).

     ixg%d: Unable to allocate bus resource: memory  A fatal initialization
     error has occurred.

     ixg%d: Unable to allocate bus resource: interrupt  A fatal initialization
     error has occurred.

     ixg%d: watchdog timeout -- resetting  The device has stopped responding
     to the network, or there is a problem with the network connection

     For general information and support, go to the Intel support website at:

     The ixg driver doesn't use the common MCLGET(9) interface and use the
     driver specific cluster allocation mechanism.  If it's exhausted, the
     evcnt(9) counter "ixgX qY Rx no jumbo mbuf" is incremented.  If this is
     observed, the number can be changed by the following config parameter:

        IXGBE_JCLNUM_MULTI  The number of RX jumbo buffers (clusters) per
                            queue is calculated by IXGBE_JCLNUM_MULTI *
                            (number of rx descriptors).  The total number of
                            clusters per queue is available via the
                            hw.ixgN.num_jcl_per_queue sysctl(7).

     arp(4), ixv(4), netintro(4), vlan(4), ifconfig(8)

     The ixg device driver comes from FreeBSD, where it is called ixgbe.  It
     first appeared in NetBSD 6.0.

     The ixg driver was written by Intel Corporation
     <freebsdnic@mailbox.intel.com>.  It was imported from FreeBSD into NetBSD
     David Young <dyoung@NetBSD.org>.

     The hardware supports a maximum MTU of 16114 bytes, but the NetBSD port
     of the driver supports only 9000 bytes.

NetBSD 9.99                      March 9, 2021                     NetBSD 9.99