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

NAME
       umad_open_port - open InfiniBand device port for umad access

SYNOPSIS
       #include <infiniband/umad.h>

       int umad_open_port(char *ca_name, int portnum);

DESCRIPTION
       umad_open_port() opens the port portnum of the IB device ca_name for
       umad access. The port is selected by the library if not all parameters
       are provided (see umad_get_port() for details).

RETURN VALUE
       umad_open_port() returns 0 or an unique positive value of umad device
       descriptor on success, and a negative value on error as follows:
        -EOPNOTSUPP ABI version doesn't match
        -ENODEV     IB device can't be resolved
        -EINVAL     port is not valid (bad portnum or no umad device)
        -EIO        umad device for this port can't be opened

SEE ALSO
       umad_close_port(3), umad_get_cas_names(3), umad_get_port(3)

AUTHOR
       Hal Rosenstock <halr@voltaire.com>

OpenIB                           May 21, 2007                UMAD_OPEN_PORT(3)