1RDMA_POST_WRITEV(3) Librdmacm Programmer's Manual RDMA_POST_WRITEV(3)
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6 rdma_post_writev - post an RDMA write work request.
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9 #include <rdma/rdma_verbs.h>
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11 int rdma_post_writev (struct rdma_cm_id *id, void *context, struct
12 ibv_sge *sgl, int nsge, int flags, uint64_t remote_addr, uint32_t
13 rkey);
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16 id A reference to a communication identifier where the request
17 will be posted.
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19 context User-defined context associated with the request.
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21 sgl A scatter-gather list of the source buffers of the write.
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23 nsge The number of scatter-gather array entries.
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25 flags Optional flags used to control the write operation.
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27 remote_addr The address of the remote registered memory to write into.
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29 rkey The registered memory key associated with the remote
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33 Posts a work request to the send queue of the queue pair associated
34 with the rdma_cm_id. The contents of the local data buffers will be
35 written into the remote memory region.
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38 Returns 0 on success, or -1 on error. If an error occurs, errno will
39 be set to indicate the failure reason.
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42 For a list of supported flags, see ibv_post_send. Unless inline data
43 is specified, the local data buffers must have been registered before
44 the write is issued, and the buffers must remain registered until the
45 write completes. The remote buffers must always be registered.
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47 Write operations may not be posted to an rdma_cm_id or the correspondā
48 ing queue pair until it has been connected.
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50 The user-defined context associated with the write request will be
51 returned to the user through the work completion wr_id, work request
52 identifier, field.
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55 rdma_cm(7), rdma_connect(3), rdma_accept(3), ibv_post_send(3),
56 rdma_post_write(3), rdma_reg_write(3), rdma_reg_msgs(3)
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60librdmacm 2010-07-19 RDMA_POST_WRITEV(3)