umad_get_ca_portguids(3) — Linux manual page

UMAD_GE...ORTGUIDS(3)  OpenIB Programmer's Manual  UMAD_GE...ORTGUIDS(3)

NAME         top

       umad_get_ca_portguids - get the InfiniBand device ports GUIDs

SYNOPSIS         top

       #include <infiniband/umad.h>

       int umad_get_ca_portguids(char *ca_name, __be64 *portguids, int max);

DESCRIPTION         top

       umad_get_ca_portguids() fills the portguids array with up to max
       port GUIDs belonging the specified IB device ca_name , or to the
       default IB device if ca_name is NULL.  The argument portguids is
       an array of max uint64_t entries.

RETURN VALUE         top

       On success, umad_get_ca_portguids() returns a non-negative value
       equal to the number of port GUIDs actually filled.  Not all
       filled entries may be valid. Invalid entries will be 0.  For
       example, on a CA node with only one port, this function returns a
       value of 2.  In this case, the value at index 0 will be invalid
       as it is reserved for switches.  On failure, a negative value is
       returned.

SEE ALSO         top

       umad_get_cas_names(3)

AUTHORS         top

       Hal Rosenstock <[email protected]>

       Dotan Barak <[email protected]>

COLOPHON         top

       This page is part of the rdma-core (RDMA Core Userspace Libraries
       and Daemons) project.  Information about the project can be found
       at ⟨https://github.com/linux-rdma/rdma-core⟩.  If you have a bug
       report for this manual page, send it to
       [email protected].  This page was obtained from the
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       ⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2024-06-14.  (At
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OpenIB                       August 8, 2016        UMAD_GE...ORTGUIDS(3)

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