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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | KNOWN BUGS | SEE ALSO | AUTHOR | COLOPHON |
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UMAD_SET_GRH_NET(3) OpenIB Programmer's Manual UMAD_SET_GRH_NET(3)
umad_set_grh_net - set GRH fields within umad buffer using network
ordering
#include <infiniband/umad.h>
int umad_set_grh_net(void *umad, void *mad_addr);
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;
umad_set_grh_net() returns 0 on success, and a negative value on
errors. Currently, there are no errors indicated.
Not implemented.
umad_set_grh(3)
Hal Rosenstock <[email protected]>
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
[email protected]. This page was obtained from the
project's upstream Git repository
⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2025-08-11. (At
that time, the date of the most recent commit that was found in
the repository was 2025-08-04.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
[email protected]
OpenIB May 24, 2007 UMAD_SET_GRH_NET(3)
Pages that refer to this page: umad_set_grh(3)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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