1EFADV_CREATE_QP_EX(3)       EFA Direct Verbs Manual      EFADV_CREATE_QP_EX(3)
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NAME

6       efadv_create_qp_ex - Create EFA specific extended Queue Pair
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SYNOPSIS

9              #include <infiniband/efadv.h>
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11              struct ibv_qp *efadv_create_qp_ex(struct ibv_context *ibvctx,
12                                struct ibv_qp_init_attr_ex *attr_ex,
13                                struct efadv_qp_init_attr *efa_attr,
14                                uint32_t inlen);
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DESCRIPTION

17       efadv_create_qp_ex() creates device-specific extended Queue Pair.
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19       The  argument  attr_ex  is an ibv_qp_init_attr_ex struct, as defined in
20       <infiniband/verbs.h>.
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22       Use ibv_qp_to_qp_ex() to get the ibv_qp_ex for accessing the  send  ops
23       iterator interface, when QP create attr IBV_QP_INIT_ATTR_SEND_OPS_FLAGS
24       is used.
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26       Scalable Reliable Datagram (SRD) transport provides reliable out-of-or‐
27       der  delivery, transparently utilizing multiple network paths to reduce
28       network tail latency.  Its interface is similar to UD, in particular it
29       supports  message  size up to MTU, with error handling extended to sup‐
30       port reliable communication.
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32       Compatibility is handled using the comp_mask and inlen fields.
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34              struct efadv_qp_init_attr {
35                  uint64_t comp_mask;
36                  uint32_t driver_qp_type;
37                  uint8_t reserved[4];
38              };
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40       inlen  In: Size of struct efadv_qp_init_attr.
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42       comp_mask
43              Compatibility mask.
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45       driver_qp_type
46              The type of QP to be created:
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48              EFADV_QP_DRIVER_TYPE_SRD: Create an SRD QP.
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RETURN VALUE

51       efadv_create_qp_ex() returns a pointer to the created QP,  or  NULL  if
52       the request fails.
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SEE ALSO

55       efadv(7), ibv_create_qp_ex(3)
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AUTHORS

58       Gal  Pressman  <galpress@amazon.com>  Daniel  Kranzdorf  <dkkranzd@ama‐
59       zon.com>
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63efa                               2019-08-06             EFADV_CREATE_QP_EX(3)