diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
index ef135efd1f18aff3d29ba939cf2ec4bb31593a12..139fc9455a6d2b59834440ae16dcb13d416820c2 100644
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
@@ -119,10 +119,26 @@ struct ag71xx_int_stats {
unsigned long total;
};
+struct ag71xx_napi_stats {
+ unsigned long napi_calls;
+ unsigned long rx_count;
+ unsigned long rx_packets;
+ unsigned long rx_packets_max;
+ unsigned long tx_count;
+ unsigned long tx_packets;
+ unsigned long tx_packets_max;
+
+ unsigned long rx[AG71XX_NAPI_WEIGHT + 1];
+ unsigned long tx[AG71XX_NAPI_WEIGHT + 1];
+};
+
struct ag71xx_debug {
struct dentry *debugfs_dir;
struct dentry *debugfs_int_stats;
+ struct dentry *debugfs_napi_stats;
+
struct ag71xx_int_stats int_stats;
+ struct ag71xx_napi_stats napi_stats;
};
struct ag71xx {
@@ -476,13 +492,16 @@ void ag71xx_debugfs_root_exit(void);
int ag71xx_debugfs_init(struct ag71xx *ag);
void ag71xx_debugfs_exit(struct ag71xx *ag);
void ag71xx_debugfs_update_int_stats(struct ag71xx *ag, u32 status);
+void ag71xx_debugfs_update_napi_stats(struct ag71xx *ag, int rx, int tx);
#else
static inline int ag71xx_debugfs_root_init(void) { return 0; }
static inline void ag71xx_debugfs_root_exit(void) {}
static inline int ag71xx_debugfs_init(struct ag71xx *ag) { return 0; }
static inline void ag71xx_debugfs_exit(struct ag71xx *ag) {}
static inline void ag71xx_debugfs_update_int_stats(struct ag71xx *ag,
- u32 status) {}
+ u32 status) {}
+static inline void ag71xx_debugfs_update_napi_stats(struct ag71xx *ag,
+ int rx, int tx) {}
#endif /* CONFIG_AG71XX_DEBUG_FS */
#endif /* _AG71XX_H */
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c
index 83bd4b0e11b01743a1bb0bb0b0e4eee1d994af0f..c37265e7b163bf8707dd6828ab32f7fd90d0af56 100644
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c
@@ -71,8 +71,77 @@ static const struct file_operations ag71xx_fops_int_stats = {
.owner = THIS_MODULE
};
+void ag71xx_debugfs_update_napi_stats(struct ag71xx *ag, int rx, int tx)
+{
+ 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);
+}
+
+static const struct file_operations ag71xx_fops_napi_stats = {
+ .open = ag71xx_debugfs_generic_open,
+ .read = read_file_napi_stats,
+ .owner = THIS_MODULE
+};
+
void ag71xx_debugfs_exit(struct ag71xx *ag)
{
+ debugfs_remove(ag->debug.debugfs_napi_stats);
debugfs_remove(ag->debug.debugfs_int_stats);
debugfs_remove(ag->debug.debugfs_dir);
}
@@ -93,6 +162,15 @@ int ag71xx_debugfs_init(struct ag71xx *ag)
if (!ag->debug.debugfs_int_stats)
goto err;
+ ag->debug.debugfs_napi_stats =
+ debugfs_create_file("napi_stats",
+ S_IRUGO,
+ ag->debug.debugfs_dir,
+ ag,
+ &ag71xx_fops_napi_stats);
+ if (!ag->debug.debugfs_napi_stats)
+ goto err;
+
return 0;
err:
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
index 97a677ce61d22326f85c3af3a41620d4a9c75cca..884366fd358b0ad8166cf3a466b8ac557601b8ff 100644
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
@@ -608,10 +608,10 @@ static void ag71xx_restart_work_func(struct work_struct *work)
ag71xx_open(ag->dev);
}
-static void ag71xx_tx_packets(struct ag71xx *ag)
+static int ag71xx_tx_packets(struct ag71xx *ag)
{
struct ag71xx_ring *ring = &ag->tx_ring;
- unsigned int sent;
+ int sent;
DBG("%s: processing TX ring\n", ag->dev->name);
@@ -641,6 +641,7 @@ static void ag71xx_tx_packets(struct ag71xx *ag)
if ((ring->curr - ring->dirty) < AG71XX_TX_THRES_WAKEUP)
netif_wake_queue(ag->dev);
+ return sent;
}
static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
@@ -711,13 +712,16 @@ static int ag71xx_poll(struct napi_struct *napi, int limit)
struct ag71xx_ring *rx_ring;
unsigned long flags;
u32 status;
- int done;
+ int tx_done;
+ int rx_done;
pdata->ddr_flush();
- ag71xx_tx_packets(ag);
+ tx_done = ag71xx_tx_packets(ag);
DBG("%s: processing RX ring\n", dev->name);
- done = ag71xx_rx_packets(ag, limit);
+ rx_done = ag71xx_rx_packets(ag, limit);
+
+ ag71xx_debugfs_update_napi_stats(ag, rx_done, tx_done);
rx_ring = &ag->rx_ring;
if (rx_ring->buf[rx_ring->dirty % AG71XX_RX_RING_SIZE].skb == NULL)
@@ -732,7 +736,7 @@ static int ag71xx_poll(struct napi_struct *napi, int limit)
ag71xx_wr(ag, AG71XX_REG_RX_CTRL, RX_CTRL_RXE);
}
- if (done < limit) {
+ if (rx_done < limit) {
if (status & RX_STATUS_PR)
goto more;
@@ -740,8 +744,8 @@ static int ag71xx_poll(struct napi_struct *napi, int limit)
if (status & TX_STATUS_PS)
goto more;
- DBG("%s: disable polling mode, done=%d, limit=%d\n",
- dev->name, done, limit);
+ DBG("%s: disable polling mode, rx=%d, tx=%d,limit=%d\n",
+ dev->name, rx_done, tx_done, limit);
napi_complete(napi);
@@ -749,13 +753,13 @@ static int ag71xx_poll(struct napi_struct *napi, int limit)
spin_lock_irqsave(&ag->lock, flags);
ag71xx_int_enable(ag, AG71XX_INT_POLL);
spin_unlock_irqrestore(&ag->lock, flags);
- return done;
+ return rx_done;
}
more:
- DBG("%s: stay in polling mode, done=%d, limit=%d\n",
- dev->name, done, limit);
- return done;
+ DBG("%s: stay in polling mode, rx=%d, tx=%d, limit=%d\n",
+ dev->name, rx_done, tx_done, limit);
+ return rx_done;
oom:
if (netif_msg_rx_err(ag))