NTB: MFV a1413cfb: correct the spread of queues over mw's
The detection of an uneven number of queues on the given memory windows was not correct. The mw_num is zero based and the mod should be division to spread them evenly over the mw's. Authored by: Jon Mason Obtained from: Linux (Dual BSD/GPL driver) Sponsored by: EMC / Isilon Storage Division
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@ -566,7 +566,7 @@ ntb_transport_init_queue(struct ntb_netdev *nt, unsigned int qp_num)
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qp->client_ready = NTB_LINK_DOWN;
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qp->event_handler = NULL;
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if (nt->max_qps % NTB_NUM_MW && mw_num < nt->max_qps % NTB_NUM_MW)
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if (nt->max_qps % NTB_NUM_MW && mw_num + 1 < nt->max_qps / NTB_NUM_MW)
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num_qps_mw = nt->max_qps / NTB_NUM_MW + 1;
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else
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num_qps_mw = nt->max_qps / NTB_NUM_MW;
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@ -1197,7 +1197,7 @@ ntb_transport_setup_qp_mw(struct ntb_netdev *nt, unsigned int qp_num)
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uint8_t mw_num = QP_TO_MW(qp_num);
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unsigned int i;
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if (nt->max_qps % NTB_NUM_MW && mw_num < nt->max_qps % NTB_NUM_MW)
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if (nt->max_qps % NTB_NUM_MW && mw_num + 1 < nt->max_qps / NTB_NUM_MW)
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num_qps_mw = nt->max_qps / NTB_NUM_MW + 1;
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else
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num_qps_mw = nt->max_qps / NTB_NUM_MW;
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