diff options
Diffstat (limited to 'drivers/gator/driver/gator_events_net.c')
-rw-r--r-- | drivers/gator/driver/gator_events_net.c | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/drivers/gator/driver/gator_events_net.c b/drivers/gator/driver/gator_events_net.c deleted file mode 100644 index ef1623b9a25..00000000000 --- a/drivers/gator/driver/gator_events_net.c +++ /dev/null @@ -1,144 +0,0 @@ -/** - * Copyright (C) ARM Limited 2010-2012. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - */ - -#include "gator.h" -#include <linux/netdevice.h> - -#define NETRX 0 -#define NETTX 1 -#define TOTALNET 2 - -static ulong netrx_enabled; -static ulong nettx_enabled; -static ulong netrx_key; -static ulong nettx_key; -static int rx_total, tx_total; -static ulong netPrev[TOTALNET]; -static int netGet[TOTALNET * 2]; - -static void get_network_stats(struct work_struct *wsptr) { - int rx = 0, tx = 0; - struct net_device *dev; - - for_each_netdev(&init_net, dev) { -#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 36) - const struct net_device_stats *stats = dev_get_stats(dev); -#else - struct rtnl_link_stats64 temp; - const struct rtnl_link_stats64 *stats = dev_get_stats(dev, &temp); -#endif - rx += stats->rx_bytes; - tx += stats->tx_bytes; - } - rx_total = rx; - tx_total = tx; -} -DECLARE_WORK(wq_get_stats, get_network_stats); - -static void calculate_delta(int *rx, int *tx) -{ - int rx_calc, tx_calc; - - rx_calc = (int)(rx_total - netPrev[NETRX]); - if (rx_calc < 0) - rx_calc = 0; - netPrev[NETRX] += rx_calc; - - tx_calc = (int)(tx_total - netPrev[NETTX]); - if (tx_calc < 0) - tx_calc = 0; - netPrev[NETTX] += tx_calc; - - *rx = rx_calc; - *tx = tx_calc; -} - -static int gator_events_net_create_files(struct super_block *sb, struct dentry *root) -{ - struct dentry *dir; - - dir = gatorfs_mkdir(sb, root, "Linux_net_rx"); - if (!dir) { - return -1; - } - gatorfs_create_ulong(sb, dir, "enabled", &netrx_enabled); - gatorfs_create_ro_ulong(sb, dir, "key", &netrx_key); - - dir = gatorfs_mkdir(sb, root, "Linux_net_tx"); - if (!dir) { - return -1; - } - gatorfs_create_ulong(sb, dir, "enabled", &nettx_enabled); - gatorfs_create_ro_ulong(sb, dir, "key", &nettx_key); - - return 0; -} - -static int gator_events_net_start(void) -{ - get_network_stats(NULL); - netPrev[NETRX] = rx_total; - netPrev[NETTX] = tx_total; - return 0; -} - -static void gator_events_net_stop(void) -{ - netrx_enabled = 0; - nettx_enabled = 0; -} - -static int gator_events_net_read(int **buffer) -{ - int len, rx_delta, tx_delta; - static int last_rx_delta = 0, last_tx_delta = 0; - - if (smp_processor_id() != 0) - return 0; - - schedule_work(&wq_get_stats); - calculate_delta(&rx_delta, &tx_delta); - - len = 0; - if (netrx_enabled && last_rx_delta != rx_delta) { - last_rx_delta = rx_delta; - netGet[len++] = netrx_key; - netGet[len++] = rx_delta; - } - - if (nettx_enabled && last_tx_delta != tx_delta) { - last_tx_delta = tx_delta; - netGet[len++] = nettx_key; - netGet[len++] = tx_delta; - } - - if (buffer) - *buffer = netGet; - - return len; -} - -static struct gator_interface gator_events_net_interface = { - .create_files = gator_events_net_create_files, - .start = gator_events_net_start, - .stop = gator_events_net_stop, - .read = gator_events_net_read, -}; - -int gator_events_net_init(void) -{ - netrx_key = gator_events_get_key(); - nettx_key = gator_events_get_key(); - - netrx_enabled = 0; - nettx_enabled = 0; - - return gator_events_install(&gator_events_net_interface); -} -gator_events_init(gator_events_net_init); |