From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- net/bridge/br_sysfs_br.c | 364 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 364 insertions(+) create mode 100644 net/bridge/br_sysfs_br.c (limited to 'net/bridge/br_sysfs_br.c') diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c new file mode 100644 index 00000000000..98cf53c81fa --- /dev/null +++ b/net/bridge/br_sysfs_br.c @@ -0,0 +1,364 @@ +/* + * Sysfs attributes of bridge ports + * Linux ethernet bridge + * + * Authors: + * Stephen Hemminger + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include + +#include "br_private.h" + +#define to_class_dev(obj) container_of(obj,struct class_device,kobj) +#define to_net_dev(class) container_of(class, struct net_device, class_dev) +#define to_bridge(cd) ((struct net_bridge *)(to_net_dev(cd)->priv)) + +/* + * Common code for storing bridge parameters. + */ +static ssize_t store_bridge_parm(struct class_device *cd, + const char *buf, size_t len, + void (*set)(struct net_bridge *, unsigned long)) +{ + struct net_bridge *br = to_bridge(cd); + char *endp; + unsigned long val; + + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + + val = simple_strtoul(buf, &endp, 0); + if (endp == buf) + return -EINVAL; + + spin_lock_bh(&br->lock); + (*set)(br, val); + spin_unlock_bh(&br->lock); + return len; +} + + +static ssize_t show_forward_delay(struct class_device *cd, char *buf) +{ + struct net_bridge *br = to_bridge(cd); + return sprintf(buf, "%lu\n", jiffies_to_clock_t(br->forward_delay)); +} + +static void set_forward_delay(struct net_bridge *br, unsigned long val) +{ + unsigned long delay = clock_t_to_jiffies(val); + br->forward_delay = delay; + if (br_is_root_bridge(br)) + br->bridge_forward_delay = delay; +} + +static ssize_t store_forward_delay(struct class_device *cd, const char *buf, + size_t len) +{ + return store_bridge_parm(cd, buf, len, set_forward_delay); +} +static CLASS_DEVICE_ATTR(forward_delay, S_IRUGO | S_IWUSR, + show_forward_delay, store_forward_delay); + +static ssize_t show_hello_time(struct class_device *cd, char *buf) +{ + return sprintf(buf, "%lu\n", + jiffies_to_clock_t(to_bridge(cd)->hello_time)); +} + +static void set_hello_time(struct net_bridge *br, unsigned long val) +{ + unsigned long t = clock_t_to_jiffies(val); + br->hello_time = t; + if (br_is_root_bridge(br)) + br->bridge_hello_time = t; +} + +static ssize_t store_hello_time(struct class_device *cd, const char *buf, + size_t len) +{ + return store_bridge_parm(cd, buf, len, set_hello_time); +} + +static CLASS_DEVICE_ATTR(hello_time, S_IRUGO | S_IWUSR, show_hello_time, + store_hello_time); + +static ssize_t show_max_age(struct class_device *cd, char *buf) +{ + return sprintf(buf, "%lu\n", + jiffies_to_clock_t(to_bridge(cd)->max_age)); +} + +static void set_max_age(struct net_bridge *br, unsigned long val) +{ + unsigned long t = clock_t_to_jiffies(val); + br->max_age = t; + if (br_is_root_bridge(br)) + br->bridge_max_age = t; +} + +static ssize_t store_max_age(struct class_device *cd, const char *buf, + size_t len) +{ + return store_bridge_parm(cd, buf, len, set_max_age); +} + +static CLASS_DEVICE_ATTR(max_age, S_IRUGO | S_IWUSR, show_max_age, + store_max_age); + +static ssize_t show_ageing_time(struct class_device *cd, char *buf) +{ + struct net_bridge *br = to_bridge(cd); + return sprintf(buf, "%lu\n", jiffies_to_clock_t(br->ageing_time)); +} + +static void set_ageing_time(struct net_bridge *br, unsigned long val) +{ + br->ageing_time = clock_t_to_jiffies(val); +} + +static ssize_t store_ageing_time(struct class_device *cd, const char *buf, + size_t len) +{ + return store_bridge_parm(cd, buf, len, set_ageing_time); +} + +static CLASS_DEVICE_ATTR(ageing_time, S_IRUGO | S_IWUSR, show_ageing_time, + store_ageing_time); +static ssize_t show_stp_state(struct class_device *cd, char *buf) +{ + struct net_bridge *br = to_bridge(cd); + return sprintf(buf, "%d\n", br->stp_enabled); +} + +static void set_stp_state(struct net_bridge *br, unsigned long val) +{ + br->stp_enabled = val; +} + +static ssize_t store_stp_state(struct class_device *cd, + const char *buf, size_t len) +{ + return store_bridge_parm(cd, buf, len, set_stp_state); +} + +static CLASS_DEVICE_ATTR(stp_state, S_IRUGO | S_IWUSR, show_stp_state, + store_stp_state); + +static ssize_t show_priority(struct class_device *cd, char *buf) +{ + struct net_bridge *br = to_bridge(cd); + return sprintf(buf, "%d\n", + (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]); +} + +static void set_priority(struct net_bridge *br, unsigned long val) +{ + br_stp_set_bridge_priority(br, (u16) val); +} + +static ssize_t store_priority(struct class_device *cd, + const char *buf, size_t len) +{ + return store_bridge_parm(cd, buf, len, set_priority); +} +static CLASS_DEVICE_ATTR(priority, S_IRUGO | S_IWUSR, show_priority, + store_priority); + +static ssize_t show_root_id(struct class_device *cd, char *buf) +{ + return br_show_bridge_id(buf, &to_bridge(cd)->designated_root); +} +static CLASS_DEVICE_ATTR(root_id, S_IRUGO, show_root_id, NULL); + +static ssize_t show_bridge_id(struct class_device *cd, char *buf) +{ + return br_show_bridge_id(buf, &to_bridge(cd)->bridge_id); +} +static CLASS_DEVICE_ATTR(bridge_id, S_IRUGO, show_bridge_id, NULL); + +static ssize_t show_root_port(struct class_device *cd, char *buf) +{ + return sprintf(buf, "%d\n", to_bridge(cd)->root_port); +} +static CLASS_DEVICE_ATTR(root_port, S_IRUGO, show_root_port, NULL); + +static ssize_t show_root_path_cost(struct class_device *cd, char *buf) +{ + return sprintf(buf, "%d\n", to_bridge(cd)->root_path_cost); +} +static CLASS_DEVICE_ATTR(root_path_cost, S_IRUGO, show_root_path_cost, NULL); + +static ssize_t show_topology_change(struct class_device *cd, char *buf) +{ + return sprintf(buf, "%d\n", to_bridge(cd)->topology_change); +} +static CLASS_DEVICE_ATTR(topology_change, S_IRUGO, show_topology_change, NULL); + +static ssize_t show_topology_change_detected(struct class_device *cd, char *buf) +{ + struct net_bridge *br = to_bridge(cd); + return sprintf(buf, "%d\n", br->topology_change_detected); +} +static CLASS_DEVICE_ATTR(topology_change_detected, S_IRUGO, show_topology_change_detected, NULL); + +static ssize_t show_hello_timer(struct class_device *cd, char *buf) +{ + struct net_bridge *br = to_bridge(cd); + return sprintf(buf, "%ld\n", br_timer_value(&br->hello_timer)); +} +static CLASS_DEVICE_ATTR(hello_timer, S_IRUGO, show_hello_timer, NULL); + +static ssize_t show_tcn_timer(struct class_device *cd, char *buf) +{ + struct net_bridge *br = to_bridge(cd); + return sprintf(buf, "%ld\n", br_timer_value(&br->tcn_timer)); +} +static CLASS_DEVICE_ATTR(tcn_timer, S_IRUGO, show_tcn_timer, NULL); + +static ssize_t show_topology_change_timer(struct class_device *cd, char *buf) +{ + struct net_bridge *br = to_bridge(cd); + return sprintf(buf, "%ld\n", br_timer_value(&br->topology_change_timer)); +} +static CLASS_DEVICE_ATTR(topology_change_timer, S_IRUGO, show_topology_change_timer, NULL); + +static ssize_t show_gc_timer(struct class_device *cd, char *buf) +{ + struct net_bridge *br = to_bridge(cd); + return sprintf(buf, "%ld\n", br_timer_value(&br->gc_timer)); +} +static CLASS_DEVICE_ATTR(gc_timer, S_IRUGO, show_gc_timer, NULL); + +static struct attribute *bridge_attrs[] = { + &class_device_attr_forward_delay.attr, + &class_device_attr_hello_time.attr, + &class_device_attr_max_age.attr, + &class_device_attr_ageing_time.attr, + &class_device_attr_stp_state.attr, + &class_device_attr_priority.attr, + &class_device_attr_bridge_id.attr, + &class_device_attr_root_id.attr, + &class_device_attr_root_path_cost.attr, + &class_device_attr_root_port.attr, + &class_device_attr_topology_change.attr, + &class_device_attr_topology_change_detected.attr, + &class_device_attr_hello_timer.attr, + &class_device_attr_tcn_timer.attr, + &class_device_attr_topology_change_timer.attr, + &class_device_attr_gc_timer.attr, + NULL +}; + +static struct attribute_group bridge_group = { + .name = SYSFS_BRIDGE_ATTR, + .attrs = bridge_attrs, +}; + +/* + * Export the forwarding information table as a binary file + * The records are struct __fdb_entry. + * + * Returns the number of bytes read. + */ +static ssize_t brforward_read(struct kobject *kobj, char *buf, + loff_t off, size_t count) +{ + struct class_device *cdev = to_class_dev(kobj); + struct net_bridge *br = to_bridge(cdev); + int n; + + /* must read whole records */ + if (off % sizeof(struct __fdb_entry) != 0) + return -EINVAL; + + n = br_fdb_fillbuf(br, buf, + count / sizeof(struct __fdb_entry), + off / sizeof(struct __fdb_entry)); + + if (n > 0) + n *= sizeof(struct __fdb_entry); + + return n; +} + +static struct bin_attribute bridge_forward = { + .attr = { .name = SYSFS_BRIDGE_FDB, + .mode = S_IRUGO, + .owner = THIS_MODULE, }, + .read = brforward_read, +}; + +/* + * Add entries in sysfs onto the existing network class device + * for the bridge. + * Adds a attribute group "bridge" containing tuning parameters. + * Binary attribute containing the forward table + * Sub directory to hold links to interfaces. + * + * Note: the ifobj exists only to be a subdirectory + * to hold links. The ifobj exists in same data structure + * as it's parent the bridge so reference counting works. + */ +int br_sysfs_addbr(struct net_device *dev) +{ + struct kobject *brobj = &dev->class_dev.kobj; + struct net_bridge *br = netdev_priv(dev); + int err; + + err = sysfs_create_group(brobj, &bridge_group); + if (err) { + pr_info("%s: can't create group %s/%s\n", + __FUNCTION__, dev->name, bridge_group.name); + goto out1; + } + + err = sysfs_create_bin_file(brobj, &bridge_forward); + if (err) { + pr_info("%s: can't create attribue file %s/%s\n", + __FUNCTION__, dev->name, bridge_forward.attr.name); + goto out2; + } + + + kobject_set_name(&br->ifobj, SYSFS_BRIDGE_PORT_SUBDIR); + br->ifobj.ktype = NULL; + br->ifobj.kset = NULL; + br->ifobj.parent = brobj; + + err = kobject_register(&br->ifobj); + if (err) { + pr_info("%s: can't add kobject (directory) %s/%s\n", + __FUNCTION__, dev->name, br->ifobj.name); + goto out3; + } + return 0; + out3: + sysfs_remove_bin_file(&dev->class_dev.kobj, &bridge_forward); + out2: + sysfs_remove_group(&dev->class_dev.kobj, &bridge_group); + out1: + return err; + +} + +void br_sysfs_delbr(struct net_device *dev) +{ + struct kobject *kobj = &dev->class_dev.kobj; + struct net_bridge *br = netdev_priv(dev); + + kobject_unregister(&br->ifobj); + sysfs_remove_bin_file(kobj, &bridge_forward); + sysfs_remove_group(kobj, &bridge_group); +} -- cgit v1.2.3