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msg/async/rdma: cosmetics initialize ibv_send_wr* var

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API usage:
int ibv_post_send(struct ibv_qp *qp, struct ibv_send_wr *wr, struct ibv_send_wr **bad_wr)
Input Parameters:
   qp struct ibv_qp from ibv_create_qp
   wr first work request (WR)
Output Parameters:
   bad_wr pointer to first rejected WR
Return Value:
   0 on success, -1 on error.
   If the call fails, errno will be set to indicate the reason for the failure.
To avoid wrong checking return value, it's better to initialize the
value to be nullptr.

Signed-off-by: Changcheng Liu <changcheng.liu@aliyun.com>
This commit is contained in:
Changcheng Liu 2019-06-27 13:19:58 +08:00
parent 7078506107
commit 60a87c9db9
1 changed files with 2 additions and 2 deletions
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4
src/msg/async/rdma/RDMAConnectedSocketImpl.cc
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@ -578,7 +578,7 @@ int RDMAConnectedSocketImpl::post_work_request(std::vector<Chunk*> &tx_buffers)
++current_buffer;
}
ibv_send_wr *bad_tx_work_request;
ibv_send_wr *bad_tx_work_request = nullptr;
if (ibv_post_send(qp->get_qp(), iswr, &bad_tx_work_request)) {
ldout(cct, 1) << __func__ << " failed to send data"
<< " (most probably should be peer not ready): "
@ -600,7 +600,7 @@ void RDMAConnectedSocketImpl::fin() {
wr.num_sge = 0;
wr.opcode = IBV_WR_SEND;
wr.send_flags = IBV_SEND_SIGNALED;
ibv_send_wr* bad_tx_work_request;
ibv_send_wr* bad_tx_work_request = nullptr;
if (ibv_post_send(qp->get_qp(), &wr, &bad_tx_work_request)) {
ldout(cct, 1) << __func__ << " failed to send message="
<< " ibv_post_send failed(most probably should be peer not ready): "