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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | AUTHOR | COLOPHON |
UMAD_SET_GRH(3) OpenIB Programmer´s Manual UMAD_SET_GRH(3)
umad_set_grh - set GRH fields within umad buffer using host ordering
#include <infiniband/umad.h>
int umad_set_grh(void *umad, void *mad_addr);
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;
umad_set_grh() returns 0 on success, and a negative value on errors.
Currently, there are no errors indicated.
umad_set_grh_net(3)
Hal Rosenstock <halr@voltaire.com>
This page is part of the rdma-core (RDMA Core Userspace Libraries and
Daemons) project. Information about the project can be found at
⟨https://github.com/linux-rdma/rdma-core⟩. If you have a bug report
for this manual page, send it to linux-rdma@vger.kernel.org. This
page was obtained from the project's upstream Git repository
⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2020-08-13. (At
that time, the date of the most recent commit that was found in the
repository was 2020-08-05.) If you discover any rendering problems
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of the original manual page), send a mail to man-pages@man7.org
OpenIB May 24, 2007 UMAD_SET_GRH(3)
Pages that refer to this page: umad_set_grh_net(3)