diff options
Diffstat (limited to 'net/can/proc.c')
| -rw-r--r-- | net/can/proc.c | 93 |
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'); |