rdma_resolve_addr(3)

1RDMA_RESOLVE_ADDR(3)     Librdmacm Programmer's Manual    RDMA_RESOLVE_ADDR(3)
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NAME

6       rdma_resolve_addr - Resolve destination and optional source addresses.
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SYNOPSIS

9       #include <rdma/rdma_cma.h>
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11       int   rdma_resolve_addr   (struct   rdma_cm_id   *id,  struct  sockaddr
12       *src_addr, struct sockaddr *dst_addr, int timeout_ms);
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ARGUMENTS

15       id          RDMA identifier.
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17       src_addr    Source address information.  This parameter may be NULL.
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19       dst_addr    Destination address information.
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21       timeout_ms  Time to wait for resolution to complete.
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DESCRIPTION

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

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

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

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