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ib(4d)

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ib(4D)                    Device Drivers & /dev files                   ib(4D)

NAME
       ib - InfiniBand Bus Nexus Driver

DESCRIPTION
       The ib (IB nexus) driver is a pseudo nexus driver that supports enumer‐
       ation  of  port  devices,  VPPA  (Virtual  Physical  Point Attachment),
       HCA_SVC (HCA Service) devices, and I/O controllers (IOC) on the Infini‐
       Band fabric that are visible to the host and provides interfaces to cf‐
       gadm_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:

       tab()  box;  cw(1.37i)  |cw(0.69i)  |cw(3.44i)   lw(1.37i)   |cw(0.69i)
       |lw(3.44i) PROPERTY NAMEDEFAULTPOSSIBLE VALUES _ port-svc-list""List of
       service names, for example: srv _ vppa-svc-list""List of service names,
       for  example:  ipib _ hca-svc-list""T{ List of service names, for exam‐
       ple: hca_nfs T}



       The port-svc-list property defines the list of port communication  ser‐
       vice  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  ser‐
       vice  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 par‐
       ented by IB nexus, such drivers should include the "ib-node-type" prop‐
       erty with value merge in the IOC driver.conf file.  That  property  en‐
       sures that properties from the .conf file are merged with other proper‐
       ties found through hardware probing.

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

         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/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
       See attributes(7) for a description of the following attribute:

       tab() box; cw(1.83i) |cw(3.67i) lw(1.83i) |lw(3.67i) ATTRIBUTE  TYPEAT‐
       TRIBUTE  VALUE  _  ArchitectureSPARC,  x86 _ Availabilitysystem/header,
       system/io/infiniband _ Interface StabilityConsolidation Private


SEE ALSO
       ibcm(4D), ibdm(4D), ibtl(4D), driver.conf(5), ib(5), attributes(7), cf‐
       gadm_ib(8)


       Writing Device Drivers in Oracle Solaris 11.4


       InfiniBand Architecture Specification, Volume 1: Release 1.1

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 de‐
           fined. 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 de‐
           fined. This property is an array of strings.


       Waiting for Port %d initialization.

           Waiting for port initialization from subnet manager.


Oracle Solaris 11.4               15 Mar 2024                           ib(4D)
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