+ struct ag71xx_napi_stats *stats = &ag->debug.napi_stats;
+
+ if (rx) {
+ stats->rx_count++;
+ stats->rx_packets += rx;
+ if (rx <= AG71XX_NAPI_WEIGHT)
+ stats->rx[rx]++;
+ if (rx > stats->rx_packets_max)
+ stats->rx_packets_max = rx;
+ }
+
+ if (tx) {
+ stats->tx_count++;
+ stats->tx_packets += tx;
+ if (tx <= AG71XX_NAPI_WEIGHT)
+ stats->tx[tx]++;
+ if (tx > stats->tx_packets_max)
+ stats->tx_packets_max = tx;
+ }
+}
+
+static ssize_t read_file_napi_stats(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ag71xx *ag = file->private_data;
+ struct ag71xx_napi_stats *stats = &ag->debug.napi_stats;
+ char buf[2048];
+ unsigned int len = 0;
+ unsigned long rx_avg = 0;
+ unsigned long tx_avg = 0;
+ int i;
+
+ if (stats->rx_count)
+ rx_avg = stats->rx_packets / stats->rx_count;
+
+ if (stats->tx_count)
+ tx_avg = stats->tx_packets / stats->tx_count;
+
+ len += snprintf(buf + len, sizeof(buf) - len, "%3s %10s %10s\n",
+ "len", "rx", "tx");
+
+ for (i = 1; i <= AG71XX_NAPI_WEIGHT; i++)
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%3d: %10lu %10lu\n",
+ i, stats->rx[i], stats->tx[i]);
+
+ len += snprintf(buf + len, sizeof(buf) - len, "\n");
+
+ len += snprintf(buf + len, sizeof(buf) - len, "%3s: %10lu %10lu\n",
+ "sum", stats->rx_count, stats->tx_count);
+ len += snprintf(buf + len, sizeof(buf) - len, "%3s: %10lu %10lu\n",
+ "avg", rx_avg, tx_avg);
+ len += snprintf(buf + len, sizeof(buf) - len, "%3s: %10lu %10lu\n",
+ "max", stats->rx_packets_max, stats->tx_packets_max);
+ len += snprintf(buf + len, sizeof(buf) - len, "%3s: %10lu %10lu\n",
+ "pkt", stats->rx_packets, stats->tx_packets);
+
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);