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net/iavf: fix performance drop after port reset

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Needs to reset rxq->rxrearm_start to 0 when reset_rx_queue(),
otherwise, the random value of rxrearm_start will cause performance drop
due to L3 contested accesses.

Fixes: 69dd4c3d08 ("net/avf: enable queue and device")
Cc: stable@dpdk.org

Signed-off-by: Leyi Rong <leyi.rong@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
This commit is contained in:
Leyi Rong 2020-11-12 13:51:54 +08:00 committed by Ferruh Yigit
parent 55384497fe
commit 63b7be7870
1 changed files with 1 additions and 0 deletions
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drivers/net/iavf/iavf_rxtx.c
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@ -195,6 +195,7 @@ reset_rx_queue(struct iavf_rx_queue *rxq)
rxq->pkt_first_seg = NULL;
rxq->pkt_last_seg = NULL;
rxq->rxrearm_nb = 0;
rxq->rxrearm_start = 0;
}
static inline void