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Diffstat (limited to 'net/can/proc.c')
-rw-r--r--net/can/proc.c93
1 files changed, 61 insertions, 32 deletions
diff --git a/net/can/proc.c b/net/can/proc.c
index 9b9ad29be567..f4265cc9c3fb 100644
--- a/net/can/proc.c
+++ b/net/can/proc.c
@@ -45,6 +45,7 @@
#include <linux/proc_fs.h>
#include <linux/list.h>
#include <linux/rcupdate.h>
+#include <linux/if_arp.h>
#include <linux/can/core.h>
#include "af_can.h"
@@ -84,6 +85,9 @@ static const char rx_list_name[][8] = {
[RX_EFF] = "rx_eff",
};
+/* receive filters subscribed for 'all' CAN devices */
+extern struct dev_rcv_lists can_rx_alldev_list;
+
/*
* af_can statistics stuff
*/
@@ -190,10 +194,6 @@ void can_stat_update(unsigned long data)
/*
* proc read functions
- *
- * From known use-cases we expect about 10 entries in a receive list to be
- * printed in the proc_fs. So PAGE_SIZE is definitely enough space here.
- *
*/
static void can_print_rcvlist(struct seq_file *m, struct hlist_head *rx_list,
@@ -202,7 +202,6 @@ static void can_print_rcvlist(struct seq_file *m, struct hlist_head *rx_list,
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" :
@@ -212,7 +211,6 @@ static void can_print_rcvlist(struct seq_file *m, struct hlist_head *rx_list,
(unsigned long)r->func, (unsigned long)r->data,
r->matches, r->ident);
}
- rcu_read_unlock();
}
static void can_print_recv_banner(struct seq_file *m)
@@ -346,24 +344,39 @@ static const struct file_operations can_version_proc_fops = {
.release = single_release,
};
+static inline void can_rcvlist_proc_show_one(struct seq_file *m, int idx,
+ struct net_device *dev,
+ struct dev_rcv_lists *d)
+{
+ if (!hlist_empty(&d->rx[idx])) {
+ can_print_recv_banner(m);
+ can_print_rcvlist(m, &d->rx[idx], dev);
+ } else
+ seq_printf(m, " (%s: no entry)\n", DNAME(dev));
+
+}
+
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 net_device *dev;
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));
+ /* receive list for 'all' CAN devices (dev == NULL) */
+ d = &can_rx_alldev_list;
+ can_rcvlist_proc_show_one(m, idx, NULL, d);
+
+ /* receive list for registered CAN devices */
+ for_each_netdev_rcu(&init_net, dev) {
+ if (dev->type == ARPHRD_CAN && dev->ml_priv)
+ can_rcvlist_proc_show_one(m, idx, dev, dev->ml_priv);
}
+
rcu_read_unlock();
seq_putc(m, '\n');
@@ -383,34 +396,50 @@ static const struct file_operations can_rcvlist_proc_fops = {
.release = single_release,
};
+static inline void can_rcvlist_sff_proc_show_one(struct seq_file *m,
+ struct net_device *dev,
+ struct dev_rcv_lists *d)
+{
+ int i;
+ int 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], dev);
+ }
+ } else
+ seq_printf(m, " (%s: no entry)\n", DNAME(dev));
+}
+
static int can_rcvlist_sff_proc_show(struct seq_file *m, void *v)
{
+ struct net_device *dev;
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));
+
+ /* sff receive list for 'all' CAN devices (dev == NULL) */
+ d = &can_rx_alldev_list;
+ can_rcvlist_sff_proc_show_one(m, NULL, d);
+
+ /* sff receive list for registered CAN devices */
+ for_each_netdev_rcu(&init_net, dev) {
+ if (dev->type == ARPHRD_CAN && dev->ml_priv)
+ can_rcvlist_sff_proc_show_one(m, dev, dev->ml_priv);
}
+
rcu_read_unlock();
seq_putc(m, '\n');