umad_get_issm_path(3) — Linux manual page


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

NAME         top

       umad_get_issm_path - get path of issm device

SYNOPSIS         top

       #include <infiniband/umad.h>

       int umad_get_issm_path(char *ca_name, int portnum,char*path,intmax);

DESCRIPTION         top

       umad_get_issm_path() resolves path to issm device (which used for
       setting/clearing PortInfo:CapMask IsSM bit) for portnum of the IB
       device ca_name , it stores resolved path in path array which cannot
       exceed max bytes in length (including NULL terminator).
       Opening issm device sets PortInfo:CapMask IsSM bit and closing clears

RETURN VALUE         top

       umad_open_port() returns 0 on success and a negative value on error
       as follows:
        -ENODEV IB device can't be resolved
        -EINVAL port is not valid (bad portnum or no umad device)

SEE ALSO         top

       umad_open_port(3), umad_get_port(3)

AUTHOR         top

       Sasha Khapyorsky <>

COLOPHON         top

       This page is part of the rdma-core (RDMA Core Userspace Libraries and
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OpenIB                          Oct 18, 2007           UMAD_GET_ISSM_PATH(3)