net: thunderx: Fix VF driver's interface statistics

This patch fixes multiple issues
1. Convert all driver statistics to percpu counters for accuracy.
2. To avoid multiple CQEs posted by a TSO packet appended to HW,
   TSO pkt's SQE has 'post_cqe' not set but a dummy SQE is added
   for getting HW transmit completion notification. This dummy
   SQE has 'dont_send' set and HW drops the pkt pointed to in this
   thus Tx drop counter increases. This patch fixes this by subtracting
   SW tx tso counter from HW Tx drop counter for actual packet drop counter.
3. Reset all individual queue's and VNIC HW stats when interface is going down.
4. Getrid off unnecessary counters in hot path.
5. Bringout all CQE error stats i.e both Rx and Tx.

Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 23 deletions

diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_queues.h b/drivers/net/ethernet/cavium/thunder/nicvf_queues.h
index 8f4718edc0fe..2e3c940c1093 100644
--- a/drivers/net/ethernet/cavium/thunder/nicvf_queues.h
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_queues.h
@@ -172,26 +172,6 @@ enum CQ_TX_ERROP_E {
 	CQ_TX_ERROP_ENUM_LAST = 0x8a,
 };
 
-struct cmp_queue_stats {
-	struct tx_stats {
-		u64 good;
-		u64 desc_fault;
-		u64 hdr_cons_err;
-		u64 subdesc_err;
-		u64 max_size_exceeded;
-		u64 imm_size_oflow;
-		u64 data_seq_err;
-		u64 mem_seq_err;
-		u64 lock_viol;
-		u64 data_fault;
-		u64 tstmp_conflict;
-		u64 tstmp_timeout;
-		u64 mem_fault;
-		u64 csum_overlap;
-		u64 csum_overflow;
-	} tx;
-} ____cacheline_aligned_in_smp;
-
 enum RQ_SQ_STATS {
 	RQ_SQ_STATS_OCTS,
 	RQ_SQ_STATS_PKTS,
@@ -243,7 +223,6 @@ struct cmp_queue {
 	spinlock_t	lock;  /* lock to serialize processing CQEs */
 	void		*desc;
 	struct q_desc_mem   dmem;
-	struct cmp_queue_stats	stats;
 	int		irq;
 } ____cacheline_aligned_in_smp;
 
@@ -338,6 +317,5 @@ u64  nicvf_queue_reg_read(struct nicvf *nic,
 void nicvf_update_rq_stats(struct nicvf *nic, int rq_idx);
 void nicvf_update_sq_stats(struct nicvf *nic, int sq_idx);
 int nicvf_check_cqe_rx_errs(struct nicvf *nic, struct cqe_rx_t *cqe_rx);
-int nicvf_check_cqe_tx_errs(struct nicvf *nic,
-			    struct cmp_queue *cq, struct cqe_send_t *cqe_tx);
+int nicvf_check_cqe_tx_errs(struct nicvf *nic, struct cqe_send_t *cqe_tx);
 #endif /* NICVF_QUEUES_H */