Tribblix: manual page: ib.4d

IB(4D) Devices IB(4D)

NAME

ib - InfiniBand Bus Nexus Driver

DESCRIPTION

The ib (IB nexus) driver is a pseudo nexus driver that supports
enumeration of port devices, VPPA (Virtual Physical Point
Attachment), HCA_SVC (HCA Service) devices, and I/O controllers
(IOC) on the InfiniBand fabric that are visible to the host and
provides interfaces to cfgadm_ib(8) to manage hot-plugging of IB
devices. The ib nexus driver enumerates the port device, VPPA devices
and HCA_SVC devices based on entries specified in the ib.conf file.
IOC devices are enumerated on demand. The IB nexus driver uses
InfiniBand Device Manager services (ibdm(4D)) to enumerate port
devices, VPPA devices, HCA_SVC devices, and IOCs on the IB fabric.

CONFIGURATION

You configure the ib driver by defining properties in the ib.conf
file. The IB nexus driver supports the following properties:

+--------------+---------+------------------------------------------+
|PROPERTY NAME | DEFAULT | POSSIBLE VALUES |
+--------------+---------+------------------------------------------+
|port-svc-list | "" | List of service names, for example: |
| | | srv |
+--------------+---------+------------------------------------------+
|vppa-svc-list | "" | List of service names, for example: ipib |
+--------------+---------+------------------------------------------+
|hca-svc-list | "" | List of service names, for example: |
| | | hca_nfs |
+--------------+---------+------------------------------------------+

The port-svc-list property defines the list of port communication
service names per port. The IB nexus driver creates a device instance
for each entry in this property per Host Channel Adapter (HCA) port.
The ib.conf file contains a port-svc-list="" entry by default. You
update port-svc-list with service names you want to add to the
system.

The vppa-svc-list property defines the list of VPPA communication
service names per port per partition key. The IB nexus driver creates
a device instance for each entry in this property per Host Channel
Adapter (HCA) port. The ib.conf file contains a vppa-svc-list=""
entry by default. You update vppa-svc-list with service names you
want to add to the system.

The hca-svc-list property defines the list of HCA_SVC communication
service names per HCA. The IB nexus driver creates a device instance
for each entry in this property per Host Channel Adapter (HCA). The
ib.conf file contains a hca-svc-list="" entry by default. You
update hca-svc-list with service names you want to add to the system.

The service name specified in port-svc-list, vppa-svc-list and hca-
svc-list must be unique, be a maximum of four characters long, and
is limited to digits 0-9 and letters a-z and A-Z.

IOC drivers (which are parented by the IB nexus driver) may
themselves have .conf files. To distinguish those cases from pseudo
drivers parented by IB nexus, such drivers should include the "ib-
node-type" property with value merge in the IOC driver.conf file.
That property ensures that properties from the .conf file are merged
with other properties found through hardware probing.

EXAMPLES

Example 1: A sample ib.conf file with one service name entry for
PORT communication services.

#
# Copyright 2001-2003 Sun Microsystems, Inc. All rights reserved.
# Use is subject to license terms.
#
port-svc-list=""
vppa-svc-list="";
hca-svc-list="";

In Example 1, the IB nexus driver does not create any
port/vppa/hca_svc device instances.

Example 2: A sample ib.conf file with one entry for "srv" service:

port-svc-list="srv"
vppa-svc-list="";
hca-svc-list="";

The IB nexus driver creates one srv service instance for every HCA
port that exists on the host. For example, if there are two HCAs,
each with two ports on the host, the IB nexus driver creates four
instances of the srv service.

Example 3: A sample ib.conf file with one service name entry for
each of Port and VPPA communication services:

port-svc-list="srv"
vppa-svc-list="ipib";
hca-svc-list="";

If there are two HCAs in the system with two ports each and each port
has two valid PKEY values, the IB nexus driver creates four
instances of srv service (one for each port). It also creates eight
instances of ipd service (one per each port/PKEY combination).

Example 4: A sample ib.conf file with one service name entry for
each of Port, VPPA and HCA_SVC communication services:

port-svc-list="srv";
vppa-svc-list="ipib";
hca-svc-list="hca_nfs";

The IB nexus driver creates one instance of hca_nfs service for each
HCA in the system.

Example 5: IOC driver .conf

ib-node-type="merge";
enable-special-mode="on";

FILES

/kernel/drv/ib
32-bit x86 ELF kernel module

/kernel/drv/amd64/ib
64-bit x86 ELF kernel module

/kernel/drv/sparcv9/ib
64-bit SPARC ELF kernel module

/kernel/drv/ib.conf
driver configuration file

ATTRIBUTES

DIAGNOSTICS

In addition to being logged, the following messages may appear on the
system console. All messages are formatted in the following manner:

ib: WARNING: Error message...

unit-address property in %s.conf not well-formed.

The driver.conf file does not have a valid "unit-addr" property
defined. This property is an array of strings.

cannot find unit-address in %s.conf.

The driver.conf file does not have a valid "unit-addr" property
defined. This property is an array of strings.

Waiting for Port %d initialization.

Waiting for port initialization from subnet manager.

January 26, 2009 IB(4D)