dpaa2-eth: Add xdp counters

Add counters for xdp processed frames to the channel statistics.
Signed-off-by: NIoana Radulescu <ruxandra.radulescu@nxp.com>
Reviewed-by: NDavid Ahern <dsahern@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c

@@ -313,9 +313,11 @@ static u32 run_xdp(struct dpaa2_eth_priv *priv,
 		if (err) {
 			xdp_release_buf(priv, ch, addr);
 			percpu_stats->tx_errors++;
+			ch->stats.xdp_tx_err++;
 		} else {
 			percpu_stats->tx_packets++;
 			percpu_stats->tx_bytes += dpaa2_fd_get_len(fd);
+			ch->stats.xdp_tx++;
 		}
 		break;
 	default:
@@ -324,6 +326,7 @@ static u32 run_xdp(struct dpaa2_eth_priv *priv,
 		trace_xdp_exception(priv->net_dev, xdp_prog, xdp_act);
 	case XDP_DROP:
 		xdp_release_buf(priv, ch, addr);
+		ch->stats.xdp_drop++;
 		break;
 	}
 

drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h

@@ -249,6 +249,10 @@ struct dpaa2_eth_ch_stats {
 	__u64 pull_err;
 	/* Number of CDANs; useful to estimate avg NAPI len */
 	__u64 cdan;
+	/* XDP counters */
+	__u64 xdp_drop;
+	__u64 xdp_tx;
+	__u64 xdp_tx_err;
 };
 
 /* Maximum number of queues associated with a DPNI */

drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c

@@ -45,6 +45,9 @@ static char dpaa2_ethtool_extras[][ETH_GSTRING_LEN] = {
 	"[drv] dequeue portal busy",
 	"[drv] channel pull errors",
 	"[drv] cdan",
+	"[drv] xdp drop",
+	"[drv] xdp tx",
+	"[drv] xdp tx errors",
 };
 
 #define DPAA2_ETH_NUM_EXTRA_STATS	ARRAY_SIZE(dpaa2_ethtool_extras)