X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/0c1d7bcfa59e45f331cf24079418d5ded805de61..3bad82d2e78536d6db1d97a8f45a18e41f5b9fd6:/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c 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 83bd4b0e1..65f2be198 100644 --- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c +++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c @@ -44,8 +44,8 @@ void ag71xx_debugfs_update_int_stats(struct ag71xx *ag, u32 status) static ssize_t read_file_int_stats(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { -#define PR_INT_STAT(_label, _field) \ - len += snprintf(buf + len, sizeof(buf) - len, \ +#define PR_INT_STAT(_label, _field) \ + len += snprintf(buf + len, sizeof(buf) - len, \ "%20s: %10lu\n", _label, ag->debug.int_stats._field); struct ag71xx *ag = file->private_data; @@ -71,10 +71,175 @@ 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; + unsigned int buflen; + unsigned int len = 0; + unsigned long rx_avg = 0; + unsigned long tx_avg = 0; + int ret; + int i; + + buflen = 2048; + buf = kmalloc(buflen, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + 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, buflen - len, "%3s %10s %10s\n", + "len", "rx", "tx"); + + for (i = 1; i <= AG71XX_NAPI_WEIGHT; i++) + len += snprintf(buf + len, buflen - len, + "%3d: %10lu %10lu\n", + i, stats->rx[i], stats->tx[i]); + + len += snprintf(buf + len, buflen - len, "\n"); + + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", + "sum", stats->rx_count, stats->tx_count); + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", + "avg", rx_avg, tx_avg); + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", + "max", stats->rx_packets_max, stats->tx_packets_max); + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", + "pkt", stats->rx_packets, stats->tx_packets); + + ret = simple_read_from_buffer(user_buf, count, ppos, buf, len); + kfree(buf); + + return ret; +} + +static const struct file_operations ag71xx_fops_napi_stats = { + .open = ag71xx_debugfs_generic_open, + .read = read_file_napi_stats, + .owner = THIS_MODULE +}; + +#define DESC_PRINT_LEN 64 + +static ssize_t read_file_ring(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos, + struct ag71xx *ag, + struct ag71xx_ring *ring, + unsigned desc_reg) +{ + char *buf; + unsigned int buflen; + unsigned int len = 0; + unsigned long flags; + ssize_t ret; + int curr; + int dirty; + u32 desc_hw; + int i; + + buflen = (ring->size * DESC_PRINT_LEN); + buf = kmalloc(buflen, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + len += snprintf(buf + len, buflen - len, + "Idx ... %-8s %-8s %-8s %-8s . %-10s\n", + "desc", "next", "data", "ctrl", "timestamp"); + + spin_lock_irqsave(&ag->lock, flags); + + curr = (ring->curr % ring->size); + dirty = (ring->dirty % ring->size); + desc_hw = ag71xx_rr(ag, desc_reg); + for (i = 0; i < ring->size; i++) { + struct ag71xx_buf *ab = &ring->buf[i]; + u32 desc_dma = ((u32) ring->descs_dma) + i * ring->desc_size; + + len += snprintf(buf + len, buflen - len, + "%3d %c%c%c %08x %08x %08x %08x %c %10lu\n", + i, + (i == curr) ? 'C' : ' ', + (i == dirty) ? 'D' : ' ', + (desc_hw == desc_dma) ? 'H' : ' ', + desc_dma, + ab->desc->next, + ab->desc->data, + ab->desc->ctrl, + (ab->desc->ctrl & DESC_EMPTY) ? 'E' : '*', + ab->timestamp); + } + + spin_unlock_irqrestore(&ag->lock, flags); + + ret = simple_read_from_buffer(user_buf, count, ppos, buf, len); + kfree(buf); + + return ret; +} + +static ssize_t read_file_tx_ring(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ag71xx *ag = file->private_data; + + return read_file_ring(file, user_buf, count, ppos, ag, &ag->tx_ring, + AG71XX_REG_TX_DESC); +} + +static const struct file_operations ag71xx_fops_tx_ring = { + .open = ag71xx_debugfs_generic_open, + .read = read_file_tx_ring, + .owner = THIS_MODULE +}; + +static ssize_t read_file_rx_ring(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ag71xx *ag = file->private_data; + + return read_file_ring(file, user_buf, count, ppos, ag, &ag->rx_ring, + AG71XX_REG_RX_DESC); +} + +static const struct file_operations ag71xx_fops_rx_ring = { + .open = ag71xx_debugfs_generic_open, + .read = read_file_rx_ring, + .owner = THIS_MODULE +}; + void ag71xx_debugfs_exit(struct ag71xx *ag) { - debugfs_remove(ag->debug.debugfs_int_stats); - debugfs_remove(ag->debug.debugfs_dir); + debugfs_remove_recursive(ag->debug.debugfs_dir); } int ag71xx_debugfs_init(struct ag71xx *ag) @@ -82,22 +247,18 @@ int ag71xx_debugfs_init(struct ag71xx *ag) ag->debug.debugfs_dir = debugfs_create_dir(ag->dev->name, ag71xx_debugfs_root); if (!ag->debug.debugfs_dir) - goto err; + return -ENOMEM; - ag->debug.debugfs_int_stats = - debugfs_create_file("int_stats", - S_IRUGO, - ag->debug.debugfs_dir, - ag, - &ag71xx_fops_int_stats); - if (!ag->debug.debugfs_int_stats) - goto err; + debugfs_create_file("int_stats", S_IRUGO, ag->debug.debugfs_dir, + ag, &ag71xx_fops_int_stats); + debugfs_create_file("napi_stats", S_IRUGO, ag->debug.debugfs_dir, + ag, &ag71xx_fops_napi_stats); + debugfs_create_file("tx_ring", S_IRUGO, ag->debug.debugfs_dir, + ag, &ag71xx_fops_tx_ring); + debugfs_create_file("rx_ring", S_IRUGO, ag->debug.debugfs_dir, + ag, &ag71xx_fops_rx_ring); return 0; - - err: - ag71xx_debugfs_exit(ag); - return -ENOMEM; } int ag71xx_debugfs_root_init(void)