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_if.c | 269 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 269 insertions(+) create mode 100644 net/bridge/br_sysfs_if.c (limited to 'net/bridge/br_sysfs_if.c') diff --git a/net/bridge/br_sysfs_if.c b/net/bridge/br_sysfs_if.c new file mode 100644 index 000000000000..567249bf9331 --- /dev/null +++ b/net/bridge/br_sysfs_if.c @@ -0,0 +1,269 @@ +/* + * 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 "br_private.h" + +struct brport_attribute { + struct attribute attr; + ssize_t (*show)(struct net_bridge_port *, char *); + ssize_t (*store)(struct net_bridge_port *, unsigned long); +}; + +#define BRPORT_ATTR(_name,_mode,_show,_store) \ +struct brport_attribute brport_attr_##_name = { \ + .attr = {.name = __stringify(_name), \ + .mode = _mode, \ + .owner = THIS_MODULE, }, \ + .show = _show, \ + .store = _store, \ +}; + +static ssize_t show_path_cost(struct net_bridge_port *p, char *buf) +{ + return sprintf(buf, "%d\n", p->path_cost); +} +static ssize_t store_path_cost(struct net_bridge_port *p, unsigned long v) +{ + br_stp_set_path_cost(p, v); + return 0; +} +static BRPORT_ATTR(path_cost, S_IRUGO | S_IWUSR, + show_path_cost, store_path_cost); + +static ssize_t show_priority(struct net_bridge_port *p, char *buf) +{ + return sprintf(buf, "%d\n", p->priority); +} +static ssize_t store_priority(struct net_bridge_port *p, unsigned long v) +{ + if (v >= (1<<(16-BR_PORT_BITS))) + return -ERANGE; + br_stp_set_port_priority(p, v); + return 0; +} +static BRPORT_ATTR(priority, S_IRUGO | S_IWUSR, + show_priority, store_priority); + +static ssize_t show_designated_root(struct net_bridge_port *p, char *buf) +{ + return br_show_bridge_id(buf, &p->designated_root); +} +static BRPORT_ATTR(designated_root, S_IRUGO, show_designated_root, NULL); + +static ssize_t show_designated_bridge(struct net_bridge_port *p, char *buf) +{ + return br_show_bridge_id(buf, &p->designated_bridge); +} +static BRPORT_ATTR(designated_bridge, S_IRUGO, show_designated_bridge, NULL); + +static ssize_t show_designated_port(struct net_bridge_port *p, char *buf) +{ + return sprintf(buf, "%d\n", p->designated_port); +} +static BRPORT_ATTR(designated_port, S_IRUGO, show_designated_port, NULL); + +static ssize_t show_designated_cost(struct net_bridge_port *p, char *buf) +{ + return sprintf(buf, "%d\n", p->designated_cost); +} +static BRPORT_ATTR(designated_cost, S_IRUGO, show_designated_cost, NULL); + +static ssize_t show_port_id(struct net_bridge_port *p, char *buf) +{ + return sprintf(buf, "0x%x\n", p->port_id); +} +static BRPORT_ATTR(port_id, S_IRUGO, show_port_id, NULL); + +static ssize_t show_port_no(struct net_bridge_port *p, char *buf) +{ + return sprintf(buf, "0x%x\n", p->port_no); +} + +static BRPORT_ATTR(port_no, S_IRUGO, show_port_no, NULL); + +static ssize_t show_change_ack(struct net_bridge_port *p, char *buf) +{ + return sprintf(buf, "%d\n", p->topology_change_ack); +} +static BRPORT_ATTR(change_ack, S_IRUGO, show_change_ack, NULL); + +static ssize_t show_config_pending(struct net_bridge_port *p, char *buf) +{ + return sprintf(buf, "%d\n", p->config_pending); +} +static BRPORT_ATTR(config_pending, S_IRUGO, show_config_pending, NULL); + +static ssize_t show_port_state(struct net_bridge_port *p, char *buf) +{ + return sprintf(buf, "%d\n", p->state); +} +static BRPORT_ATTR(state, S_IRUGO, show_port_state, NULL); + +static ssize_t show_message_age_timer(struct net_bridge_port *p, + char *buf) +{ + return sprintf(buf, "%ld\n", br_timer_value(&p->message_age_timer)); +} +static BRPORT_ATTR(message_age_timer, S_IRUGO, show_message_age_timer, NULL); + +static ssize_t show_forward_delay_timer(struct net_bridge_port *p, + char *buf) +{ + return sprintf(buf, "%ld\n", br_timer_value(&p->forward_delay_timer)); +} +static BRPORT_ATTR(forward_delay_timer, S_IRUGO, show_forward_delay_timer, NULL); + +static ssize_t show_hold_timer(struct net_bridge_port *p, + char *buf) +{ + return sprintf(buf, "%ld\n", br_timer_value(&p->hold_timer)); +} +static BRPORT_ATTR(hold_timer, S_IRUGO, show_hold_timer, NULL); + +static struct brport_attribute *brport_attrs[] = { + &brport_attr_path_cost, + &brport_attr_priority, + &brport_attr_port_id, + &brport_attr_port_no, + &brport_attr_designated_root, + &brport_attr_designated_bridge, + &brport_attr_designated_port, + &brport_attr_designated_cost, + &brport_attr_state, + &brport_attr_change_ack, + &brport_attr_config_pending, + &brport_attr_message_age_timer, + &brport_attr_forward_delay_timer, + &brport_attr_hold_timer, + NULL +}; + +#define to_brport_attr(_at) container_of(_at, struct brport_attribute, attr) +#define to_brport(obj) container_of(obj, struct net_bridge_port, kobj) + +static ssize_t brport_show(struct kobject * kobj, + struct attribute * attr, char * buf) +{ + struct brport_attribute * brport_attr = to_brport_attr(attr); + struct net_bridge_port * p = to_brport(kobj); + + return brport_attr->show(p, buf); +} + +static ssize_t brport_store(struct kobject * kobj, + struct attribute * attr, + const char * buf, size_t count) +{ + struct brport_attribute * brport_attr = to_brport_attr(attr); + struct net_bridge_port * p = to_brport(kobj); + ssize_t ret = -EINVAL; + char *endp; + unsigned long val; + + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + + val = simple_strtoul(buf, &endp, 0); + if (endp != buf) { + rtnl_lock(); + if (p->dev && p->br && brport_attr->store) { + spin_lock_bh(&p->br->lock); + ret = brport_attr->store(p, val); + spin_unlock_bh(&p->br->lock); + if (ret == 0) + ret = count; + } + rtnl_unlock(); + } + return ret; +} + +/* called from kobject_put when port ref count goes to zero. */ +static void brport_release(struct kobject *kobj) +{ + kfree(container_of(kobj, struct net_bridge_port, kobj)); +} + +static struct sysfs_ops brport_sysfs_ops = { + .show = brport_show, + .store = brport_store, +}; + +static struct kobj_type brport_ktype = { + .sysfs_ops = &brport_sysfs_ops, + .release = brport_release, +}; + + +/* + * Add sysfs entries to ethernet device added to a bridge. + * Creates a brport subdirectory with bridge attributes. + * Puts symlink in bridge's brport subdirectory + */ +int br_sysfs_addif(struct net_bridge_port *p) +{ + struct net_bridge *br = p->br; + struct brport_attribute **a; + int err; + + ASSERT_RTNL(); + + kobject_set_name(&p->kobj, SYSFS_BRIDGE_PORT_ATTR); + p->kobj.ktype = &brport_ktype; + p->kobj.parent = &(p->dev->class_dev.kobj); + p->kobj.kset = NULL; + + err = kobject_add(&p->kobj); + if(err) + goto out1; + + err = sysfs_create_link(&p->kobj, &br->dev->class_dev.kobj, + SYSFS_BRIDGE_PORT_LINK); + if (err) + goto out2; + + for (a = brport_attrs; *a; ++a) { + err = sysfs_create_file(&p->kobj, &((*a)->attr)); + if (err) + goto out2; + } + + err = sysfs_create_link(&br->ifobj, &p->kobj, p->dev->name); + if (err) + goto out2; + + return 0; + out2: + kobject_del(&p->kobj); + out1: + return err; +} + +void br_sysfs_removeif(struct net_bridge_port *p) +{ + pr_debug("br_sysfs_removeif\n"); + sysfs_remove_link(&p->br->ifobj, p->dev->name); + kobject_del(&p->kobj); +} + +void br_sysfs_freeif(struct net_bridge_port *p) +{ + pr_debug("br_sysfs_freeif\n"); + kobject_put(&p->kobj); +} -- cgit v1.2.3-59-g8ed1b