d6b92ffa99
kernel APIs. List of sources used: 1) rdma-core was cloned from "https://github.com/linux-rdma/rdma-core.git" Top commit d65138ef93af30b3ea249f3a84aa6a24ba7f8a75 2) OpenSM was cloned from git://git.openfabrics.org/~halr/opensm.git Top commit 85f841cf209f791c89a075048a907020e924528d 3) libibmad was cloned from "git://git.openfabrics.org/~iraweiny/libibmad.git" Tag 1.3.13 with some additional patches from Mellanox. 4) infiniband-diags was cloned from "git://git.openfabrics.org/~iraweiny/infiniband-diags.git" Tag 1.6.7 with some additional patches from Mellanox. Added the required Makefiles for building and installing. Sponsored by: Mellanox Technologies
56 lines
2.1 KiB
Groff
56 lines
2.1 KiB
Groff
.\" Licensed under the OpenIB.org BSD license (FreeBSD Variant) - See COPYING.md
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.TH "RDMA_POST_UD_SEND" 3 "2010-07-19" "librdmacm" "Librdmacm Programmer's Manual" librdmacm
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.SH NAME
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rdma_post_ud_send \- post a work request to send a datagram.
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.SH SYNOPSIS
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.B "#include <rdma/rdma_verbs.h>"
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.P
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.B "int" rdma_post_ud_send
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.BI "(struct rdma_cm_id *" id ","
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.BI "void *" context ","
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.BI "void *" addr ","
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.BI "size_t " length ","
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.BI "struct ibv_mr *" mr ","
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.BI "int " flags ","
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.BI "struct ibv_ah *" ah ","
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.BI "uint32_t " remote_qpn ");"
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.SH ARGUMENTS
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.IP "id" 12
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A reference to a communication identifier where the message buffer
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will be posted.
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.IP "context" 12
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User-defined context associated with the request.
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.IP "addr" 12
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The address of the memory buffer to post.
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.IP "length" 12
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The length of the memory buffer.
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.IP "mr" 12
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Optional registered memory region associated with the posted buffer.
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.IP "flags" 12
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Optional flags used to control the send operation.
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.IP "ah" 12
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An address handle describing the address of the remote node.
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.IP "remote_qpn" 12
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The number of the destination queue pair.
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.SH "DESCRIPTION"
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Posts a work request to the send queue of the queue pair associated
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with the rdma_cm_id. The contents of the posted buffer will be sent
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to the specified destination queue pair.
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.SH "RETURN VALUE"
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Returns 0 on success, or -1 on error. If an error occurs, errno will be
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set to indicate the failure reason.
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.SH "NOTES"
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The user is responsible for ensuring that the destination queue pair
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has queued a receive request before issuing the send operations. For a list of
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supported flags, see ibv_post_send. Unless the send request is using
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inline data, the message buffer must have been registered
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before being posted, with the mr parameter referencing the registration.
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The buffer must remain registered until the send completes.
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.P
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The user-defined context associated with the send request will be
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returned to the user through the work completion wr_id, work request
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identifier, field.
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.SH "SEE ALSO"
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rdma_cm(7), rdma_connect(3), rdma_accept(3), rdma_reg_msgs(3)
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ibv_post_send(3), rdma_post_recv(3)
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