From: Radha Mohan Chintakuntla rchintakuntla@cavium.com
This patch is part of upstream accepted patch "net: thunderx: Reset RXQ HW stats when interface is brought down". RHEL 7.3 4.5.0-15-el7 has majority part but missing the reset receive queue stats code. --- drivers/net/ethernet/cavium/thunder/nicvf_queues.c | 15 +++++++++++++++ 1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c index 2098468..7993db6 100644 --- a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c +++ b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c @@ -479,6 +479,16 @@ void nicvf_config_vlan_stripping(struct nicvf *nic, netdev_features_t features) NIC_QSET_RQ_GEN_CFG, 0, rq_cfg); }
+static void nicvf_reset_rcv_queue_stats(struct nicvf *nic) +{ + union nic_mbx mbx = {}; + + /* Reset all RXQ's stats */ + mbx.reset_stat.msg = NIC_MBOX_MSG_RESET_STAT_COUNTER; + mbx.reset_stat.rq_stat_mask = 0xFFFF; + nicvf_send_msg_to_pf(nic, &mbx); +} + /* Configures receive queue */ static void nicvf_rcv_queue_config(struct nicvf *nic, struct queue_set *qs, int qidx, bool enable) @@ -808,6 +818,11 @@ int nicvf_config_data_transfer(struct nicvf *nic, bool enable) nicvf_free_resources(nic); }
+ /* Reset RXQ's stats. + * SQ's stats will get reset automatically once SQ is reset. + */ + nicvf_reset_rcv_queue_stats(nic); + return 0; }