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NTB: MFV a1413cfb: correct the spread of queues over mw's

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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
This commit is contained in:
Conrad Meyer 2015-10-14 23:47:35 +00:00
parent 937a702523
commit fe9621016e
1 changed files with 2 additions and 2 deletions
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4
sys/dev/ntb/if_ntb/if_ntb.c
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@ -566,7 +566,7 @@ ntb_transport_init_queue(struct ntb_netdev *nt, unsigned int qp_num)
qp->client_ready = NTB_LINK_DOWN; qp->client_ready = NTB_LINK_DOWN;
qp->event_handler = NULL; qp->event_handler = NULL;
if (nt->max_qps % NTB_NUM_MW && mw_num < nt->max_qps % NTB_NUM_MW) if (nt->max_qps % NTB_NUM_MW && mw_num + 1 < nt->max_qps / NTB_NUM_MW)
num_qps_mw = nt->max_qps / NTB_NUM_MW + 1; num_qps_mw = nt->max_qps / NTB_NUM_MW + 1;
else else
num_qps_mw = nt->max_qps / NTB_NUM_MW; num_qps_mw = nt->max_qps / NTB_NUM_MW;
@ -1197,7 +1197,7 @@ ntb_transport_setup_qp_mw(struct ntb_netdev *nt, unsigned int qp_num)
uint8_t mw_num = QP_TO_MW(qp_num); uint8_t mw_num = QP_TO_MW(qp_num);
unsigned int i; unsigned int i;
if (nt->max_qps % NTB_NUM_MW && mw_num < nt->max_qps % NTB_NUM_MW) if (nt->max_qps % NTB_NUM_MW && mw_num + 1 < nt->max_qps / NTB_NUM_MW)
num_qps_mw = nt->max_qps / NTB_NUM_MW + 1; num_qps_mw = nt->max_qps / NTB_NUM_MW + 1;
else else
num_qps_mw = nt->max_qps / NTB_NUM_MW; num_qps_mw = nt->max_qps / NTB_NUM_MW;