net/dim: use struct net_dim_sample as arg to net_dim

Simplify the arguments net_dim() by formatting them into a struct
net_dim_sample before calling the function.

Signed-off-by: Andy Gospodarek <gospo@broadcom.com>
Suggested-by: Tal Gilboa <talgi@mellanox.com>
Acked-by: Tal Gilboa <talgi@mellanox.com>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c

@@ -78,11 +78,14 @@ int mlx5e_napi_poll(struct napi_struct *napi, int budget)
 	for (i = 0; i < c->num_tc; i++)
 		mlx5e_cq_arm(&c->sq[i].cq);
 
-	if (MLX5E_TEST_BIT(c->rq.state, MLX5E_RQ_STATE_AM))
-		net_dim(&c->rq.dim,
-			c->rq.cq.event_ctr,
-			c->rq.stats.packets,
-			c->rq.stats.bytes);
+	if (MLX5E_TEST_BIT(c->rq.state, MLX5E_RQ_STATE_AM)) {
+		struct net_dim_sample dim_sample;
+		net_dim_sample(c->rq.cq.event_ctr,
+			       c->rq.stats.packets,
+			       c->rq.stats.bytes,
+			       &dim_sample);
+		net_dim(&c->rq.dim, dim_sample);
+	}
 
 	mlx5e_cq_arm(&c->rq.cq);
 	mlx5e_cq_arm(&c->icosq.cq);

include/linux/net_dim.h

@@ -342,21 +342,18 @@ static inline void net_dim_calc_stats(struct net_dim_sample *start,
 }
 
 static inline void net_dim(struct net_dim *dim,
-			   u16 event_ctr,
-			   u64 packets,
-			   u64 bytes)
+			   struct net_dim_sample end_sample)
 {
-	struct net_dim_sample end_sample;
 	struct net_dim_stats curr_stats;
 	u16 nevents;
 
 	switch (dim->state) {
 	case NET_DIM_MEASURE_IN_PROGRESS:
-		nevents = BIT_GAP(BITS_PER_TYPE(u16), event_ctr,
+		nevents = BIT_GAP(BITS_PER_TYPE(u16),
+				  end_sample.event_ctr,
 				  dim->start_sample.event_ctr);
 		if (nevents < NET_DIM_NEVENTS)
 			break;
-		net_dim_sample(event_ctr, packets, bytes, &end_sample);
 		net_dim_calc_stats(&dim->start_sample, &end_sample,
 				   &curr_stats);
 		if (net_dim_decision(&curr_stats, dim)) {
@@ -366,7 +363,6 @@ static inline void net_dim(struct net_dim *dim,
 		}
 		/* fall through */
 	case NET_DIM_START_MEASURE:
-		net_dim_sample(event_ctr, packets, bytes, &dim->start_sample);
 		dim->state = NET_DIM_MEASURE_IN_PROGRESS;
 		break;
 	case NET_DIM_APPLY_NEW_PROFILE: