[dpdk-dev] [PATCH 1/2] i40e: adjust the number of queues for RSS

[Helin Zhang]

It adjusts the number of queues for RSS from power of 2 to any as
long as it does not exceeds the hardware allowed.

Signed-off-by: Helin Zhang <helin.zhang at intel.com>
---
 drivers/net/i40e/i40e_ethdev.c    | 8 ++++----
 drivers/net/i40e/i40e_ethdev_vf.c | 2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 2dd9fdc..4b70588 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -5153,12 +5153,12 @@ i40e_pf_config_rss(struct i40e_pf *pf)
         * If both VMDQ and RSS enabled, not all of PF queues are configured.
         * It's necessary to calulate the actual PF queues that are configured.
         */
-       if (pf->dev_data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_VMDQ_FLAG) {
+       if (pf->dev_data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_VMDQ_FLAG)
                num = i40e_pf_calc_configured_queues_num(pf);
-               num = i40e_align_floor(num);
-       } else
-               num = i40e_align_floor(pf->dev_data->nb_rx_queues);
+       else
+               num = pf->dev_data->nb_rx_queues;

+       num = RTE_MIN(num, I40E_MAX_Q_PER_TC);
        PMD_INIT_LOG(INFO, "Max of contiguous %u PF queues are configured",
                        num);

diff --git a/drivers/net/i40e/i40e_ethdev_vf.c 
b/drivers/net/i40e/i40e_ethdev_vf.c
index b694400..b15ff7b 100644
--- a/drivers/net/i40e/i40e_ethdev_vf.c
+++ b/drivers/net/i40e/i40e_ethdev_vf.c
@@ -1915,7 +1915,7 @@ i40evf_config_rss(struct i40e_vf *vf)
                return 0;
        }

-       num = i40e_align_floor(vf->dev_data->nb_rx_queues);
+       num = RTE_MIN(vf->dev_data->nb_rx_queues, I40E_MAX_QP_NUM_PER_VF);
        /* Fill out the look up table */
        for (i = 0, j = 0; i < nb_q; i++, j++) {
                if (j >= num)
-- 
1.9.3