UMAD_GET_CA_PORTGUIDS(3)  OpenIB Programmer's Manual  UMAD_GET_CA_PORTGUIDS(3)

NAME
       umad_get_ca_portguids - get the InfiniBand device ports GUIDs

SYNOPSIS
       #include <infiniband/umad.h>

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

DESCRIPTION
       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
       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
       umad_get_cas_names(3)

AUTHORS
       Hal Rosenstock <halr@voltaire.com>

       Dotan Barak <dotanb@mellanox.co.il>

OpenIB                          August 8, 2016        UMAD_GET_CA_PORTGUIDS(3)