UMAD_REGISTER2 - Online Linux Manual Page

Section : 3
Updated : March 25, 2014
Source : OpenIB
Note : OpenIB Programmer's Manual

NAME

umad_register2 − register the specified management class and version for port

SYNOPSIS

#include <infiniband/umad.h>

int umad_register2(int

port_fd

, struct umad_reg_attr *

attr

, uint32_t *

agent_id

);

DESCRIPTION

umad_register2() registers for a MAD agent using the provided registration attributes port_fd the port on which to register the agent attr The registration attributes as defined by the structure passed. See below for details of this structure. agent_id returned on success. agent_id identifies the kernel MAD agent a MAD is received by or to be sent by. agent_id is returned in the umad header "struct ib_user_mad" on recv and specified in umad_send when sending.

REGISTRATION ATTRIBUTE STRUCTURE

struct umad_reg_attr {

uint8_t mgmt_class; uint8_t mgmt_class_version; uint32_t flags; uint64_t method_mask[2]; uint32_t oui; uint8_t rmpp_version;

}; mgmt_class Management class to register for. mgmt_class_version Management class version to register for. flags Registration flags. If a flag specified is not supported by the kernel, an error is returned, and the supported flags are returned in this field.

Current flags are:

UMAD_USER_RMPP -- flag to indicate the kernel should not process RMPP packets. All RMPP packets will be treated like individual MADs. The user is responsible for implementing the RMPP protocol.

method_mask A bit mask which indicates which unsolicited methods this agent should receive. Setting this array to 0 will result in the agent only receiving response MADs for which a request was sent. oui The oui (in host order) to use for vendor classes 0x30 - 0x4f. Otherwise ignored. rmpp_version If the class supports RMPP and kernel RMPP is enabled (the default) indicate which rmpp_version to use.

RETURN VALUE

umad_register2() returns 0 on success and +ERRNO on failure.