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net/ice: optimize maximum queue number calculation

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Remove the limitation that max queue pair number must be 2^n.
With this patch, even on a 8 ports device, the max queue pair
number increased from 128 to 254.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Wenjun Wu <wenjun1.wu@intel.com>
This commit is contained in:
Qi Zhang 2022-04-08 19:23:43 +08:00
parent ee6647e016
commit 8c03aa5e00
1 changed files with 20 additions and 4 deletions
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24
drivers/net/ice/ice_ethdev.c
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@ -819,10 +819,26 @@ ice_vsi_config_tc_queue_mapping(struct ice_vsi *vsi,
return -ENOTSUP;
}
vsi->nb_qps = RTE_MIN(vsi->nb_qps, ICE_MAX_Q_PER_TC);
fls = (vsi->nb_qps == 0) ? 0 : rte_fls_u32(vsi->nb_qps) - 1;
/* Adjust the queue number to actual queues that can be applied */
vsi->nb_qps = (vsi->nb_qps == 0) ? 0 : 0x1 << fls;
/* vector 0 is reserved and 1 vector for ctrl vsi */
if (vsi->adapter->hw.func_caps.common_cap.num_msix_vectors < 2)
vsi->nb_qps = 0;
else
vsi->nb_qps = RTE_MIN
((uint16_t)vsi->adapter->hw.func_caps.common_cap.num_msix_vectors - 2,
RTE_MIN(vsi->nb_qps, ICE_MAX_Q_PER_TC));
/* nb_qps(hex) -> fls */
/* 0000 -> 0 */
/* 0001 -> 0 */
/* 0002 -> 1 */
/* 0003 ~ 0004 -> 2 */
/* 0005 ~ 0008 -> 3 */
/* 0009 ~ 0010 -> 4 */
/* 0011 ~ 0020 -> 5 */
/* 0021 ~ 0040 -> 6 */
/* 0041 ~ 0080 -> 7 */
/* 0081 ~ 0100 -> 8 */
fls = (vsi->nb_qps == 0) ? 0 : rte_fls_u32(vsi->nb_qps - 1);
qp_idx = 0;
/* Set tc and queue mapping with VSI */