rdma_resolve_addr(3) — Linux manual page


RDMA_RESOLVE_ADDR(3)  Librdmacm Programmer's Manual RDMA_RESOLVE_ADDR(3)

NAME         top

       rdma_resolve_addr - Resolve destination and optional source

SYNOPSIS         top

       #include <rdma/rdma_cma.h>

       int rdma_resolve_addr (struct rdma_cm_id *id, struct sockaddr
       *src_addr, struct sockaddr *dst_addr, int timeout_ms);

ARGUMENTS         top

       id          RDMA identifier.

       src_addr    Source address information.  This parameter may be

       dst_addr    Destination address information.

       timeout_ms  Time to wait for resolution to complete.

DESCRIPTION         top

       Resolve destination and optional source addresses from IP
       addresses to an RDMA address.  If successful, the specified
       rdma_cm_id will be bound to a local device.

RETURN VALUE         top

       Returns 0 on success, or -1 on error.  If an error occurs, errno
       will be set to indicate the failure reason.

NOTES         top

       This call is used to map a given destination IP address to a
       usable RDMA address.  The IP to RDMA address mapping is done
       using the local routing tables, or via ARP.  If a source address
       is given, the rdma_cm_id is bound to that address, the same as if
       rdma_bind_addr were called.  If no source address is given, and
       the rdma_cm_id has not yet been bound to a device, then the
       rdma_cm_id will be bound to a source address based on the local
       routing tables.  After this call, the rdma_cm_id will be bound to
       an RDMA device.  This call is typically made from the active side
       of a connection before calling rdma_resolve_route and


       This call maps the destination and, if given, source IP addresses
       to GIDs.  In order to perform the mapping, IPoIB must be running
       on both the local and remote nodes.

SEE ALSO         top

       rdma_create_id(3), rdma_resolve_route(3), rdma_connect(3),
       rdma_create_qp(3), rdma_get_cm_event(3), rdma_bind_addr(3),
       rdma_get_src_port(3), rdma_get_dst_port(3),
       rdma_get_local_addr(3), rdma_get_peer_addr(3)

COLOPHON         top

       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 2021-08-27.  (At
       that time, the date of the most recent commit that was found in
       the repository was 2021-08-18.)  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

librdmacm                      2007-10-31           RDMA_RESOLVE_ADDR(3)

Pages that refer to this page: rdma_bind_addr(3)rdma_create_id(3)rdma_create_qp(3)rdma_create_srq(3)rdma_get_cm_event(3)rdma_get_local_addr(3)rdma_get_peer_addr(3)rdma_get_src_port(3)rdma_join_multicast(3)rdma_join_multicast_ex(3)rdma_resolve_route(3)rdma_cm(7)