*/
#include <linux/module.h>
+#include <linux/version.h>
#include <linux/proc_fs.h>
#include <linux/list.h>
#include <linux/rcupdate.h>
-#include <linux/can/core.h>
+#include <socketcan/can/core.h>
#include "af_can.h"
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
+#include "compat.h"
+#endif
-#include <linux/can/version.h> /* for RCSID. Removed by mkpatch script */
+#include <socketcan/can/version.h> /* for RCSID. Removed by mkpatch script */
RCSID("$Id$");
/*
{
/*
* This memset function is called from a timer context (when
- * stattimer is active which is the default) OR in a process
- * context (reading the proc_fs when stattimer is disabled).
+ * can_stattimer is active which is the default) OR in a process
+ * context (reading the proc_fs when can_stattimer is disabled).
*/
- memset(&stats, 0, sizeof(stats));
- stats.jiffies_init = jiffies;
+ memset(&can_stats, 0, sizeof(can_stats));
+ can_stats.jiffies_init = jiffies;
- pstats.stats_reset++;
+ can_pstats.stats_reset++;
if (user_reset) {
user_reset = 0;
- pstats.user_reset++;
+ can_pstats.user_reset++;
}
}
static unsigned long calc_rate(unsigned long oldjif, unsigned long newjif,
unsigned long count)
{
- unsigned long ret = 0;
+ unsigned long rate;
if (oldjif == newjif)
return 0;
return 99999999;
}
- ret = (count * HZ) / (newjif - oldjif);
+ rate = (count * HZ) / (newjif - oldjif);
- return ret;
+ return rate;
}
void can_stat_update(unsigned long data)
can_init_stats();
/* restart counting on jiffies overflow */
- if (j < stats.jiffies_init)
+ if (j < can_stats.jiffies_init)
can_init_stats();
/* prevent overflow in calc_rate() */
- if (stats.rx_frames > (ULONG_MAX / HZ))
+ if (can_stats.rx_frames > (ULONG_MAX / HZ))
can_init_stats();
/* prevent overflow in calc_rate() */
- if (stats.tx_frames > (ULONG_MAX / HZ))
+ if (can_stats.tx_frames > (ULONG_MAX / HZ))
can_init_stats();
/* matches overflow - very improbable */
- if (stats.matches > (ULONG_MAX / 100))
+ if (can_stats.matches > (ULONG_MAX / 100))
can_init_stats();
/* calc total values */
- if (stats.rx_frames)
- stats.total_rx_match_ratio = (stats.matches * 100) /
- stats.rx_frames;
+ if (can_stats.rx_frames)
+ can_stats.total_rx_match_ratio = (can_stats.matches * 100) /
+ can_stats.rx_frames;
- stats.total_tx_rate = calc_rate(stats.jiffies_init, j,
- stats.tx_frames);
- stats.total_rx_rate = calc_rate(stats.jiffies_init, j,
- stats.rx_frames);
+ can_stats.total_tx_rate = calc_rate(can_stats.jiffies_init, j,
+ can_stats.tx_frames);
+ can_stats.total_rx_rate = calc_rate(can_stats.jiffies_init, j,
+ can_stats.rx_frames);
/* calc current values */
- if (stats.rx_frames_delta)
- stats.current_rx_match_ratio =
- (stats.matches_delta * 100) / stats.rx_frames_delta;
+ if (can_stats.rx_frames_delta)
+ can_stats.current_rx_match_ratio =
+ (can_stats.matches_delta * 100) /
+ can_stats.rx_frames_delta;
- stats.current_tx_rate = calc_rate(0, HZ, stats.tx_frames_delta);
- stats.current_rx_rate = calc_rate(0, HZ, stats.rx_frames_delta);
+ can_stats.current_tx_rate = calc_rate(0, HZ, can_stats.tx_frames_delta);
+ can_stats.current_rx_rate = calc_rate(0, HZ, can_stats.rx_frames_delta);
/* check / update maximum values */
- if (stats.max_tx_rate < stats.current_tx_rate)
- stats.max_tx_rate = stats.current_tx_rate;
+ if (can_stats.max_tx_rate < can_stats.current_tx_rate)
+ can_stats.max_tx_rate = can_stats.current_tx_rate;
- if (stats.max_rx_rate < stats.current_rx_rate)
- stats.max_rx_rate = stats.current_rx_rate;
+ if (can_stats.max_rx_rate < can_stats.current_rx_rate)
+ can_stats.max_rx_rate = can_stats.current_rx_rate;
- if (stats.max_rx_match_ratio < stats.current_rx_match_ratio)
- stats.max_rx_match_ratio = stats.current_rx_match_ratio;
+ if (can_stats.max_rx_match_ratio < can_stats.current_rx_match_ratio)
+ can_stats.max_rx_match_ratio = can_stats.current_rx_match_ratio;
/* clear values for 'current rate' calculation */
- stats.tx_frames_delta = 0;
- stats.rx_frames_delta = 0;
- stats.matches_delta = 0;
+ can_stats.tx_frames_delta = 0;
+ can_stats.rx_frames_delta = 0;
+ can_stats.matches_delta = 0;
/* restart timer (one second) */
- stattimer.expires = round_jiffies(jiffies + HZ);
- add_timer(&stattimer);
+ mod_timer(&can_stattimer, round_jiffies(jiffies + HZ));
}
/*
*
*/
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
+static void can_print_rcvlist(struct seq_file *m, struct hlist_head *rx_list,
+ struct net_device *dev)
+{
+ struct receiver *r;
+ struct hlist_node *n;
+
+ hlist_for_each_entry_rcu(r, n, rx_list, list) {
+ char *fmt = (r->can_id & CAN_EFF_FLAG)?
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,0,0)
+ " %-5s %08x %08x %p %p %8ld %s\n" :
+ " %-5s %03x %08x %p %p %8ld %s\n";
+#else
+ " %-5s %08x %08x %pK %pK %8ld %s\n" :
+ " %-5s %03x %08x %pK %pK %8ld %s\n";
+#endif
+
+ seq_printf(m, fmt, DNAME(dev), r->can_id, r->mask,
+ r->func, r->data, r->matches, r->ident);
+ }
+}
+
+static void can_print_recv_banner(struct seq_file *m)
+{
+ /*
+ * can1. 00000000 00000000 00000000
+ * ....... 0 tp20
+ */
+ seq_puts(m, " device can_id can_mask function"
+ " userdata matches ident\n");
+}
+
+static int can_stats_proc_show(struct seq_file *m, void *v)
+{
+ seq_putc(m, '\n');
+ seq_printf(m, " %8ld transmitted frames (TXF)\n", can_stats.tx_frames);
+ seq_printf(m, " %8ld received frames (RXF)\n", can_stats.rx_frames);
+ seq_printf(m, " %8ld matched frames (RXMF)\n", can_stats.matches);
+
+ seq_putc(m, '\n');
+
+ if (can_stattimer.function == can_stat_update) {
+ seq_printf(m, " %8ld %% total match ratio (RXMR)\n",
+ can_stats.total_rx_match_ratio);
+
+ seq_printf(m, " %8ld frames/s total tx rate (TXR)\n",
+ can_stats.total_tx_rate);
+ seq_printf(m, " %8ld frames/s total rx rate (RXR)\n",
+ can_stats.total_rx_rate);
+
+ seq_putc(m, '\n');
+
+ seq_printf(m, " %8ld %% current match ratio (CRXMR)\n",
+ can_stats.current_rx_match_ratio);
+
+ seq_printf(m, " %8ld frames/s current tx rate (CTXR)\n",
+ can_stats.current_tx_rate);
+ seq_printf(m, " %8ld frames/s current rx rate (CRXR)\n",
+ can_stats.current_rx_rate);
+
+ seq_putc(m, '\n');
+
+ seq_printf(m, " %8ld %% max match ratio (MRXMR)\n",
+ can_stats.max_rx_match_ratio);
+
+ seq_printf(m, " %8ld frames/s max tx rate (MTXR)\n",
+ can_stats.max_tx_rate);
+ seq_printf(m, " %8ld frames/s max rx rate (MRXR)\n",
+ can_stats.max_rx_rate);
+
+ seq_putc(m, '\n');
+ }
+
+ seq_printf(m, " %8ld current receive list entries (CRCV)\n",
+ can_pstats.rcv_entries);
+ seq_printf(m, " %8ld maximum receive list entries (MRCV)\n",
+ can_pstats.rcv_entries_max);
+
+ if (can_pstats.stats_reset)
+ seq_printf(m, "\n %8ld statistic resets (STR)\n",
+ can_pstats.stats_reset);
+
+ if (can_pstats.user_reset)
+ seq_printf(m, " %8ld user statistic resets (USTR)\n",
+ can_pstats.user_reset);
+
+ seq_putc(m, '\n');
+ return 0;
+}
+
+static int can_stats_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, can_stats_proc_show, NULL);
+}
+
+static const struct file_operations can_stats_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = can_stats_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int can_reset_stats_proc_show(struct seq_file *m, void *v)
+{
+ user_reset = 1;
+
+ if (can_stattimer.function == can_stat_update) {
+ seq_printf(m, "Scheduled statistic reset #%ld.\n",
+ can_pstats.stats_reset + 1);
+
+ } else {
+ if (can_stats.jiffies_init != jiffies)
+ can_init_stats();
+
+ seq_printf(m, "Performed statistic reset #%ld.\n",
+ can_pstats.stats_reset);
+ }
+ return 0;
+}
+
+static int can_reset_stats_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, can_reset_stats_proc_show, NULL);
+}
+
+static const struct file_operations can_reset_stats_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = can_reset_stats_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int can_version_proc_show(struct seq_file *m, void *v)
+{
+ seq_printf(m, "%s\n", CAN_VERSION_STRING);
+ return 0;
+}
+
+static int can_version_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, can_version_proc_show, NULL);
+}
+
+static const struct file_operations can_version_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = can_version_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int can_rcvlist_proc_show(struct seq_file *m, void *v)
+{
+ /* double cast to prevent GCC warning */
+ int idx = (int)(long)m->private;
+ struct dev_rcv_lists *d;
+ struct hlist_node *n;
+
+ seq_printf(m, "\nreceive list '%s':\n", rx_list_name[idx]);
+
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(d, n, &can_rx_dev_list, list) {
+
+ if (!hlist_empty(&d->rx[idx])) {
+ can_print_recv_banner(m);
+ can_print_rcvlist(m, &d->rx[idx], d->dev);
+ } else
+ seq_printf(m, " (%s: no entry)\n", DNAME(d->dev));
+ }
+ rcu_read_unlock();
+
+ seq_putc(m, '\n');
+ return 0;
+}
+
+static int can_rcvlist_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, can_rcvlist_proc_show, PDE(inode)->data);
+}
+
+static const struct file_operations can_rcvlist_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = can_rcvlist_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int can_rcvlist_sff_proc_show(struct seq_file *m, void *v)
+{
+ struct dev_rcv_lists *d;
+ struct hlist_node *n;
+
+ /* RX_SFF */
+ seq_puts(m, "\nreceive list 'rx_sff':\n");
+
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(d, n, &can_rx_dev_list, list) {
+ int i, all_empty = 1;
+ /* check wether at least one list is non-empty */
+ for (i = 0; i < 0x800; i++)
+ if (!hlist_empty(&d->rx_sff[i])) {
+ all_empty = 0;
+ break;
+ }
+
+ if (!all_empty) {
+ can_print_recv_banner(m);
+ for (i = 0; i < 0x800; i++) {
+ if (!hlist_empty(&d->rx_sff[i]))
+ can_print_rcvlist(m, &d->rx_sff[i],
+ d->dev);
+ }
+ } else
+ seq_printf(m, " (%s: no entry)\n", DNAME(d->dev));
+ }
+ rcu_read_unlock();
+
+ seq_putc(m, '\n');
+ return 0;
+}
+
+static int can_rcvlist_sff_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, can_rcvlist_sff_proc_show, NULL);
+}
+
+static const struct file_operations can_rcvlist_sff_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = can_rcvlist_sff_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+#else
static int can_print_rcvlist(char *page, int len, struct hlist_head *rx_list,
struct net_device *dev)
{
struct receiver *r;
struct hlist_node *n;
- rcu_read_lock();
hlist_for_each_entry_rcu(r, n, rx_list, list) {
char *fmt = (r->can_id & CAN_EFF_FLAG)?
" %-5s %08X %08x %08x %08x %8ld %s\n" :
break;
}
}
- rcu_read_unlock();
return len;
}
len += snprintf(page + len, PAGE_SIZE - len, "\n");
len += snprintf(page + len, PAGE_SIZE - len,
- " %8ld transmitted frames (TXF)\n", stats.tx_frames);
+ " %8ld transmitted frames (TXF)\n",
+ can_stats.tx_frames);
len += snprintf(page + len, PAGE_SIZE - len,
- " %8ld received frames (RXF)\n", stats.rx_frames);
+ " %8ld received frames (RXF)\n", can_stats.rx_frames);
len += snprintf(page + len, PAGE_SIZE - len,
- " %8ld matched frames (RXMF)\n", stats.matches);
+ " %8ld matched frames (RXMF)\n", can_stats.matches);
len += snprintf(page + len, PAGE_SIZE - len, "\n");
- if (stattimer.function == can_stat_update) {
+ if (can_stattimer.function == can_stat_update) {
len += snprintf(page + len, PAGE_SIZE - len,
" %8ld %% total match ratio (RXMR)\n",
- stats.total_rx_match_ratio);
+ can_stats.total_rx_match_ratio);
len += snprintf(page + len, PAGE_SIZE - len,
" %8ld frames/s total tx rate (TXR)\n",
- stats.total_tx_rate);
+ can_stats.total_tx_rate);
len += snprintf(page + len, PAGE_SIZE - len,
" %8ld frames/s total rx rate (RXR)\n",
- stats.total_rx_rate);
+ can_stats.total_rx_rate);
len += snprintf(page + len, PAGE_SIZE - len, "\n");
len += snprintf(page + len, PAGE_SIZE - len,
" %8ld %% current match ratio (CRXMR)\n",
- stats.current_rx_match_ratio);
+ can_stats.current_rx_match_ratio);
len += snprintf(page + len, PAGE_SIZE - len,
" %8ld frames/s current tx rate (CTXR)\n",
- stats.current_tx_rate);
+ can_stats.current_tx_rate);
len += snprintf(page + len, PAGE_SIZE - len,
" %8ld frames/s current rx rate (CRXR)\n",
- stats.current_rx_rate);
+ can_stats.current_rx_rate);
len += snprintf(page + len, PAGE_SIZE - len, "\n");
len += snprintf(page + len, PAGE_SIZE - len,
" %8ld %% max match ratio (MRXMR)\n",
- stats.max_rx_match_ratio);
+ can_stats.max_rx_match_ratio);
len += snprintf(page + len, PAGE_SIZE - len,
" %8ld frames/s max tx rate (MTXR)\n",
- stats.max_tx_rate);
+ can_stats.max_tx_rate);
len += snprintf(page + len, PAGE_SIZE - len,
" %8ld frames/s max rx rate (MRXR)\n",
- stats.max_rx_rate);
+ can_stats.max_rx_rate);
len += snprintf(page + len, PAGE_SIZE - len, "\n");
}
len += snprintf(page + len, PAGE_SIZE - len,
" %8ld current receive list entries (CRCV)\n",
- pstats.rcv_entries);
+ can_pstats.rcv_entries);
len += snprintf(page + len, PAGE_SIZE - len,
" %8ld maximum receive list entries (MRCV)\n",
- pstats.rcv_entries_max);
+ can_pstats.rcv_entries_max);
- if (pstats.stats_reset)
+ if (can_pstats.stats_reset)
len += snprintf(page + len, PAGE_SIZE - len,
"\n %8ld statistic resets (STR)\n",
- pstats.stats_reset);
+ can_pstats.stats_reset);
- if (pstats.user_reset)
+ if (can_pstats.user_reset)
len += snprintf(page + len, PAGE_SIZE - len,
" %8ld user statistic resets (USTR)\n",
- pstats.user_reset);
+ can_pstats.user_reset);
len += snprintf(page + len, PAGE_SIZE - len, "\n");
user_reset = 1;
- if (stattimer.function == can_stat_update) {
+ if (can_stattimer.function == can_stat_update) {
len += snprintf(page + len, PAGE_SIZE - len,
"Scheduled statistic reset #%ld.\n",
- pstats.stats_reset + 1);
+ can_pstats.stats_reset + 1);
} else {
- if (stats.jiffies_init != jiffies)
+ if (can_stats.jiffies_init != jiffies)
can_init_stats();
len += snprintf(page + len, PAGE_SIZE - len,
"Performed statistic reset #%ld.\n",
- pstats.stats_reset);
+ can_pstats.stats_reset);
}
*eof = 1;
"\nreceive list '%s':\n", rx_list_name[idx]);
rcu_read_lock();
- hlist_for_each_entry_rcu(d, n, &rx_dev_list, list) {
+ hlist_for_each_entry_rcu(d, n, &can_rx_dev_list, list) {
if (!hlist_empty(&d->rx[idx])) {
len = can_print_recv_banner(page, len);
"\nreceive list 'rx_sff':\n");
rcu_read_lock();
- hlist_for_each_entry_rcu(d, n, &rx_dev_list, list) {
+ hlist_for_each_entry_rcu(d, n, &can_rx_dev_list, list) {
int i, all_empty = 1;
/* check wether at least one list is non-empty */
for (i = 0; i < 0x800; i++)
*eof = 1;
return len;
}
+#endif
/*
* proc utility functions
*/
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26)
static struct proc_dir_entry *can_create_proc_readentry(const char *name,
mode_t mode,
read_proc_t *read_proc,
else
return NULL;
}
+#endif
static void can_remove_proc_readentry(const char *name)
{
return;
}
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
can_dir->owner = THIS_MODULE;
+#endif
/* own procfs entries from the AF_CAN core */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
+ pde_version = proc_create(CAN_PROC_VERSION, 0644, can_dir,
+ &can_version_proc_fops);
+ pde_stats = proc_create(CAN_PROC_STATS, 0644, can_dir,
+ &can_stats_proc_fops);
+ pde_reset_stats = proc_create(CAN_PROC_RESET_STATS, 0644, can_dir,
+ &can_reset_stats_proc_fops);
+ pde_rcvlist_err = proc_create_data(CAN_PROC_RCVLIST_ERR, 0644, can_dir,
+ &can_rcvlist_proc_fops, (void *)RX_ERR);
+ pde_rcvlist_all = proc_create_data(CAN_PROC_RCVLIST_ALL, 0644, can_dir,
+ &can_rcvlist_proc_fops, (void *)RX_ALL);
+ pde_rcvlist_fil = proc_create_data(CAN_PROC_RCVLIST_FIL, 0644, can_dir,
+ &can_rcvlist_proc_fops, (void *)RX_FIL);
+ pde_rcvlist_inv = proc_create_data(CAN_PROC_RCVLIST_INV, 0644, can_dir,
+ &can_rcvlist_proc_fops, (void *)RX_INV);
+ pde_rcvlist_eff = proc_create_data(CAN_PROC_RCVLIST_EFF, 0644, can_dir,
+ &can_rcvlist_proc_fops, (void *)RX_EFF);
+ pde_rcvlist_sff = proc_create(CAN_PROC_RCVLIST_SFF, 0644, can_dir,
+ &can_rcvlist_sff_proc_fops);
+#else
pde_version = can_create_proc_readentry(CAN_PROC_VERSION, 0644,
can_proc_read_version, NULL);
pde_stats = can_create_proc_readentry(CAN_PROC_STATS, 0644,
can_proc_read_rcvlist, (void *)RX_EFF);
pde_rcvlist_sff = can_create_proc_readentry(CAN_PROC_RCVLIST_SFF, 0644,
can_proc_read_rcvlist_sff, NULL);
+#endif
}
/*
projects / socketcan-devel.git / blobdiff