NAME¶
umad_get_ca_portguids - get the InfiniBand device ports GUIDs
SYNOPSIS¶
#include <infiniband/umad.h>
int umad_get_ca_portguids(char *ca_name, __be64 *portguids, int max);
DESCRIPTION¶
umad_get_ca_portguids() fills the portguids array with up to
max port GUIDs belonging the specified IB device ca_name , or to
the default IB device if ca_name is NULL. The argument portguids
is an array of max uint64_t entries.
RETURN VALUE¶
On success, umad_get_ca_portguids() returns a non-negative value equal to
the number of port GUIDs actually filled. Not all filled entries may be valid.
Invalid entries will be 0. For example, on a CA node with only one port, this
function returns a value of 2. In this case, the value at index 0 will be
invalid as it is reserved for switches. On failure, a negative value is
returned.
AUTHORS¶
- Hal Rosenstock <halr@voltaire.com>
- Dotan Barak <dotanb@mellanox.co.il>
