umad_open_port - open InfiniBand device port for umad access

NAME  SYNOPSIS  DESCRIPTION  RETURN VALUE  SEE ALSO  AUTHOR 

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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 <[email protected]>

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