net/mlx5e: Rename misleading skb_pc/cc references in ptp code

The 'skb_pc/cc' naming is misleading as the values hold the
producer/consumer indices (masked values), not the counters. Rename to
'skb_pi/ci'.
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Adham Faris <afaris@nvidia.com>

drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c

@@ -81,23 +81,23 @@ void mlx5e_skb_cb_hwtstamp_handler(struct sk_buff *skb, int hwtstamp_type,
 
 #define PTP_WQE_CTR2IDX(val) ((val) & ptpsq->ts_cqe_ctr_mask)
 
-static bool mlx5e_ptp_ts_cqe_drop(struct mlx5e_ptpsq *ptpsq, u16 skb_cc, u16 skb_id)
+static bool mlx5e_ptp_ts_cqe_drop(struct mlx5e_ptpsq *ptpsq, u16 skb_ci, u16 skb_id)
 {
-	return (ptpsq->ts_cqe_ctr_mask && (skb_cc != skb_id));
+	return (ptpsq->ts_cqe_ctr_mask && (skb_ci != skb_id));
 }
 
 static bool mlx5e_ptp_ts_cqe_ooo(struct mlx5e_ptpsq *ptpsq, u16 skb_id)
 {
-	u16 skb_cc = PTP_WQE_CTR2IDX(ptpsq->skb_fifo_cc);
-	u16 skb_pc = PTP_WQE_CTR2IDX(ptpsq->skb_fifo_pc);
+	u16 skb_ci = PTP_WQE_CTR2IDX(ptpsq->skb_fifo_cc);
+	u16 skb_pi = PTP_WQE_CTR2IDX(ptpsq->skb_fifo_pc);
 
-	if (PTP_WQE_CTR2IDX(skb_id - skb_cc) >= PTP_WQE_CTR2IDX(skb_pc - skb_cc))
+	if (PTP_WQE_CTR2IDX(skb_id - skb_ci) >= PTP_WQE_CTR2IDX(skb_pi - skb_ci))
 		return true;
 
 	return false;
 }
 
-static void mlx5e_ptp_skb_fifo_ts_cqe_resync(struct mlx5e_ptpsq *ptpsq, u16 skb_cc,
+static void mlx5e_ptp_skb_fifo_ts_cqe_resync(struct mlx5e_ptpsq *ptpsq, u16 skb_ci,
 					     u16 skb_id, int budget)
 {
 	struct skb_shared_hwtstamps hwts = {};
@@ -105,13 +105,13 @@ static void mlx5e_ptp_skb_fifo_ts_cqe_resync(struct mlx5e_ptpsq *ptpsq, u16 skb_
 
 	ptpsq->cq_stats->resync_event++;
 
-	while (skb_cc != skb_id) {
+	while (skb_ci != skb_id) {
 		skb = mlx5e_skb_fifo_pop(&ptpsq->skb_fifo);
 		hwts.hwtstamp = mlx5e_skb_cb_get_hwts(skb)->cqe_hwtstamp;
 		skb_tstamp_tx(skb, &hwts);
 		ptpsq->cq_stats->resync_cqe++;
 		napi_consume_skb(skb, budget);
-		skb_cc = PTP_WQE_CTR2IDX(ptpsq->skb_fifo_cc);
+		skb_ci = PTP_WQE_CTR2IDX(ptpsq->skb_fifo_cc);
 	}
 }
 
@@ -120,7 +120,7 @@ static void mlx5e_ptp_handle_ts_cqe(struct mlx5e_ptpsq *ptpsq,
 				    int budget)
 {
 	u16 skb_id = PTP_WQE_CTR2IDX(be16_to_cpu(cqe->wqe_counter));
-	u16 skb_cc = PTP_WQE_CTR2IDX(ptpsq->skb_fifo_cc);
+	u16 skb_ci = PTP_WQE_CTR2IDX(ptpsq->skb_fifo_cc);
 	struct mlx5e_txqsq *sq = &ptpsq->txqsq;
 	struct sk_buff *skb;
 	ktime_t hwtstamp;
@@ -131,13 +131,13 @@ static void mlx5e_ptp_handle_ts_cqe(struct mlx5e_ptpsq *ptpsq,
 		goto out;
 	}
 
-	if (mlx5e_ptp_ts_cqe_drop(ptpsq, skb_cc, skb_id)) {
+	if (mlx5e_ptp_ts_cqe_drop(ptpsq, skb_ci, skb_id)) {
 		if (mlx5e_ptp_ts_cqe_ooo(ptpsq, skb_id)) {
 			/* already handled by a previous resync */
 			ptpsq->cq_stats->ooo_cqe_drop++;
 			return;
 		}
-		mlx5e_ptp_skb_fifo_ts_cqe_resync(ptpsq, skb_cc, skb_id, budget);
+		mlx5e_ptp_skb_fifo_ts_cqe_resync(ptpsq, skb_ci, skb_id, budget);
 	}
 
 	skb = mlx5e_skb_fifo_pop(&ptpsq->skb_fifo);