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umad_init(3) [centos man page]

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

NAME
umad_init, umad_done - perform library initialization and finalization SYNOPSIS
#include <infiniband/umad.h> int umad_init(void); int umad_done(void); DESCRIPTION
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(). NOTES
If an error occurs during the library initialization, no further use of the umad library should be attempted. AUTHORS
Hal Rosenstock <halr@voltaire.com> Dotan Barak <dotanb@mellanox.co.il> OpenIB May 21, 2007 UMAD_INIT(3)

Check Out this Related Man Page

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

NAME
umad_set_grh - set GRH fields within umad buffer using host ordering SYNOPSIS
#include <infiniband/umad.h> int umad_set_grh(void *umad, void *mad_addr); DESCRIPTION
umad_set_grh() sets the GRH fields (grh_present, gid, hop_limit, traffic_class, flow_label) within the specified umad buffer based on the mad_addr supplied. The provided mad_addr fields are expected to be in host order. If the mad_addr pointer supplied is NULL, no GRH is set. The argument mad_addr is a pointer to an ib_mad_addr_t struct, as specified in <infiniband/umad.h>. The argument umad is a pointer to an ib_user_mad_t struct, as specified in <infiniband/umad.h>. typedef struct ib_mad_addr { uint32_t qpn; uint32_t qkey; uint16_t lid; uint8_t sl; uint8_t path_bits; uint8_t grh_present; uint8_t gid_index; uint8_t hop_limit; uint8_t traffic_class; uint8_t gid[16]; uint32_t flow_label; } ib_mad_addr_t; typedef struct ib_user_mad { uint32_t agent_id; uint32_t status; uint32_t timeout_ms; uint32_t retries; uint32_t length; ib_mad_addr_t addr; uint8_t data[0]; } ib_user_mad_t; RETURN VALUE
umad_set_grh() returns 0 on success, and a negative value on errors. Currently, there are no errors indicated. SEE ALSO
umad_set_grh_net(3) AUTHOR
Hal Rosenstock <halr@voltaire.com> OpenIB May 24, 2007 UMAD_SET_GRH(3)
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