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UMAD_SET_GRH_NET(3)	  OpenIB Programmer´s Manual	   UMAD_SET_GRH_NET(3)

NAME
       umad_set_grh_net	 -  set	 GRH  fields  within umad buffer using network
       ordering

SYNOPSIS
       #include <infiniband/umad.h>

       int umad_set_grh_net(void *umad, void *mad_addr);

DESCRIPTION
       umad_set_grh_net() 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  network 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_net() returns 0  on	 success,  and	a  negative  value  on
       errors. Currently, there are no errors indicated.

KNOWN BUGS
       Not implemented.

SEE ALSO
       umad_set_grh(3)

AUTHOR
       Hal Rosenstock <halr@voltaire.com>

OpenIB				 May 24, 2007		   UMAD_SET_GRH_NET(3)

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