umad_open_port(3) [centos man page]

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:
	-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)

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

NAME

       umad_get_port, umad_release_port - open and close an InfiniBand port

SYNOPSIS

       #include <infiniband/umad.h>

       int umad_get_port(char *ca_name, int portnum, umad_port_t *port);
       int umad_release_port(umad_port_t *port);

DESCRIPTION

       umad_get_port()	fills  the port structure with the IB port attributes specified by ca_name and portnum , or the default port if ca_name is
       NULL and portnum is zero. If only one of ca_name and portnum are specified, the other is used as a filter.  For	example,  passing  a  NULL
       ca_name	and  2 for the portnum means get a port from any of the local IB devices, as long as it is the second port.  Note that the library
       may use some reference scheme to support port caching therefore umad_release_port() should be called before the port structure can be deal-
       located.  The argument port is an umad_port_t struct, as specified in <infiniband/umad.h>.

       typedef struct umad_port {
	       char ca_name[UMAD_CA_NAME_LEN];		       /* Name of the device */
	       int portnum;				       /* Physical port number */
	       uint base_lid;				       /* Base port LID */
	       uint lmc;				       /* LMC of LID */
	       uint sm_lid;				       /* SM LID */
	       uint sm_sl;				       /* SM service level */
	       uint state;				       /* Logical port state */
	       uint phys_state; 			       /* Physical port state */
	       uint rate;				       /* Port link bit rate */
	       uint64_t capmask;			       /* Port capabilities */
	       uint64_t gid_prefix;			       /* Gid prefix of this port */
	       uint64_t port_guid;			       /* GUID of this port */
       } umad_port_t;

       umad_release_port() releases the resources that were allocated by the umad_get_port() function for the specified IB port.

RETURN VALUE

       umad_get_port() and umad_release_port() return 0 on success, and a negative value on error.

AUTHORS

       Hal Rosenstock <halr@voltaire.com>

       Dotan Barak <dotanb@mellanox.co.il>

OpenIB								   May 21, 2007 						  UMAD_GET_PORT(3)