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

6       rdma_reg_msgs  -  register data buffer(s) for sending or receiving mes‐
7       sages.
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SYNOPSIS

10       #include <rdma/rdma_verbs.h>
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12       struct ibv_mr *  rdma_reg_msgs  (struct  rdma_cm_id  *id,  void  *addr,
13       size_t length);
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ARGUMENTS

16       id          A reference to a communication identifier where the message
17                   buffer(s) will be used.
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19       addr        The address of the memory buffer(s) to register.
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21       length      The total length of the memory to register.
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DESCRIPTION

24       Registers an array of memory buffers used  for  sending  and  receiving
25       messages  or  for  RDMA  operations.   Memory  buffers registered using
26       rdma_reg_msgs may be posted to an rdma_cm_id  using  rdma_post_send  or
27       rdma_post_recv, or specified as the target of an RDMA read operation or
28       the source of an RDMA write request.
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RETURN VALUE

31       Returns a reference to the registered memory region on success, or NULL
32       on  error.  If an error occurs, errno will be set to indicate the fail‐
33       ure reason.
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NOTES

36       rdma_reg_msgs is used to register an array of data buffers that will be
37       used  send  and/or  receive messages on a queue pair associated with an
38       rdma_cm_id.  The memory  buffer  is  registered  with  the  proteection
39       domain  associated  with  the  idenfier.   The start of the data buffer
40       array is specified through the addr parameter, and the  total  size  of
41       the array is given by length.
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43       All  data  buffers  should  be registered before being posted as a work
44       request.  Users  must  deregister  all  registered  memory  by  calling
45       rdma_dereg_mr.
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SEE ALSO

48       rdma_cm(7),   rdma_create_id(3),  rdma_create_ep(3),  rdma_reg_read(3),
49       rdma_reg_write(3), ibv_reg_mr(3),  ibv_dereg_mr(3),  rdma_post_send(3),
50       rdma_post_recv(3),        rdma_post_read(3),        rdma_post_readv(3),
51       rdma_post_write(3), rdma_post_writev(3)
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55librdmacm                         2010-07-19                  RDMA_REG_MSGS(3)
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