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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | AUTHORS | COLOPHON |
UMAD_GET_PORT(3) OpenIB Programmer´s Manual UMAD_GET_PORT(3)
umad_get_port, umad_release_port - open and close an InfiniBand port
#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);
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 deallocated. 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.
umad_get_port() and umad_release_port() return 0 on success, and a
negative value on error.
Hal Rosenstock <halr@voltaire.com>
Dotan Barak <dotanb@mellanox.co.il>
This page is part of the rdma-core (RDMA Core Userspace Libraries and
Daemons) project. Information about the project can be found at
⟨https://github.com/linux-rdma/rdma-core⟩. If you have a bug report
for this manual page, send it to linux-rdma@vger.kernel.org. This
page was obtained from the project's upstream Git repository
⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2020-08-13. (At
that time, the date of the most recent commit that was found in the
repository was 2020-08-05.) If you discover any rendering problems
in this HTML version of the page, or you believe there is a better or
more up-to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not part
of the original manual page), send a mail to man-pages@man7.org
OpenIB May 21, 2007 UMAD_GET_PORT(3)