umad_send(3) [debian man page]

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

NAME

       umad_send - send umad

SYNOPSIS

       #include <infiniband/umad.h>

       int umad_send(int portid, int agentid, void *umad, int timeout_ms, int retries);

DESCRIPTION

       umad_send()  sends  the specified umad buffer from the port specified by portid, and using the agent specified by agentid.  timeout_ms con-
       trols the solicited MADs behavior as follows: zero value means not solicited. Positive value makes kernel indicate timeout in milliseconds.
       If  reply is not received within the specified value, the original buffer is returned in the read channel with the status field set (to non
       zero). Negative timeout_ms makes kernel wait forever for the reply.  retries indicates the number of times the MAD will be  retried  before
       giving up.

RETURN VALUE

       umad_send() returns 0 on success, and a negative value on error as follows:
	-EINVAL invalid port handle or agentid
	-EIO	send operation failed

AUTHOR

       Hal Rosenstock <halr@voltaire.com>

OpenIB								   May 11, 2007 						      UMAD_SEND(3)

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)