net: ena: Account for the number of processed bytes in XDP

The size of packets that were forwarded or dropped by XDP wasn't added
to the total processed bytes statistic.

Fixes: 548c4940 ("net: ena: Implement XDP_TX action")
Signed-off-by: NShay Agroskin <shayagr@amazon.com>
Signed-off-by: NDavid Arinzon <darinzon@amazon.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/amazon/ena/ena_netdev.c

@@ -1719,6 +1719,7 @@ static int ena_clean_rx_irq(struct ena_ring *rx_ring, struct napi_struct *napi,
 			}
 			if (xdp_verdict != XDP_PASS) {
 				xdp_flags |= xdp_verdict;
+				total_len += ena_rx_ctx.ena_bufs[0].len;
 				res_budget--;
 				continue;
 			}