umad_init man page

umad_init, umad_done — perform library initialization and finalization


#include <infiniband/umad.h>

int umad_init(void);

int umad_done(void);


umad_init() initializes the umad library for use. Must be called before any other call to this library.

umad_done() finalizes the use of the umad library.

Return Value

umad_init() and umad_done() return 0 on success, and -1 on error. Error is returned from umad_init() if infiniband umad can´t be opened, or the abi version doesn´t match. There are no errors currently returned by umad_done().


If an error occurs during the library initialization, no further use of the umad library should be attempted.


Hal Rosenstock <>

Dotan Barak <>


May 21, 2007 OpenIB Programmer´s Manual