| |
| /* |
| * Copyright(c) 2004-2005 Intel Corporation. All rights reserved. |
| * |
| * 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. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| * |
| * The full GNU General Public License is included in this distribution in the |
| * file called LICENSE. |
| * |
| */ |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/device.h> |
| #include <linux/sysdev.h> |
| #include <linux/fs.h> |
| #include <linux/types.h> |
| #include <linux/string.h> |
| #include <linux/netdevice.h> |
| #include <linux/inetdevice.h> |
| #include <linux/in.h> |
| #include <linux/sysfs.h> |
| #include <linux/ctype.h> |
| #include <linux/inet.h> |
| #include <linux/rtnetlink.h> |
| #include <net/net_namespace.h> |
| |
| /* #define BONDING_DEBUG 1 */ |
| #include "bonding.h" |
| #define to_dev(obj) container_of(obj,struct device,kobj) |
| #define to_bond(cd) ((struct bonding *)(to_net_dev(cd)->priv)) |
| |
| /*---------------------------- Declarations -------------------------------*/ |
| |
| |
| extern struct list_head bond_dev_list; |
| extern struct bond_params bonding_defaults; |
| extern struct bond_parm_tbl bond_mode_tbl[]; |
| extern struct bond_parm_tbl bond_lacp_tbl[]; |
| extern struct bond_parm_tbl xmit_hashtype_tbl[]; |
| extern struct bond_parm_tbl arp_validate_tbl[]; |
| |
| static int expected_refcount = -1; |
| static struct class *netdev_class; |
| /*--------------------------- Data Structures -----------------------------*/ |
| |
| /* Bonding sysfs lock. Why can't we just use the subsytem lock? |
| * Because kobject_register tries to acquire the subsystem lock. If |
| * we already hold the lock (which we would if the user was creating |
| * a new bond through the sysfs interface), we deadlock. |
| * This lock is only needed when deleting a bond - we need to make sure |
| * that we don't collide with an ongoing ioctl. |
| */ |
| |
| struct rw_semaphore bonding_rwsem; |
| |
| |
| |
| |
| /*------------------------------ Functions --------------------------------*/ |
| |
| /* |
| * "show" function for the bond_masters attribute. |
| * The class parameter is ignored. |
| */ |
| static ssize_t bonding_show_bonds(struct class *cls, char *buffer) |
| { |
| int res = 0; |
| struct bonding *bond; |
| |
| down_read(&(bonding_rwsem)); |
| |
| list_for_each_entry(bond, &bond_dev_list, bond_list) { |
| if (res > (PAGE_SIZE - IFNAMSIZ)) { |
| /* not enough space for another interface name */ |
| if ((PAGE_SIZE - res) > 10) |
| res = PAGE_SIZE - 10; |
| res += sprintf(buffer + res, "++more++"); |
| break; |
| } |
| res += sprintf(buffer + res, "%s ", |
| bond->dev->name); |
| } |
| res += sprintf(buffer + res, "\n"); |
| res++; |
| up_read(&(bonding_rwsem)); |
| return res; |
| } |
| |
| /* |
| * "store" function for the bond_masters attribute. This is what |
| * creates and deletes entire bonds. |
| * |
| * The class parameter is ignored. |
| * |
| */ |
| |
| static ssize_t bonding_store_bonds(struct class *cls, const char *buffer, size_t count) |
| { |
| char command[IFNAMSIZ + 1] = {0, }; |
| char *ifname; |
| int res = count; |
| struct bonding *bond; |
| struct bonding *nxt; |
| |
| down_write(&(bonding_rwsem)); |
| sscanf(buffer, "%16s", command); /* IFNAMSIZ*/ |
| ifname = command + 1; |
| if ((strlen(command) <= 1) || |
| !dev_valid_name(ifname)) |
| goto err_no_cmd; |
| |
| if (command[0] == '+') { |
| |
| /* Check to see if the bond already exists. */ |
| list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list) |
| if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) { |
| printk(KERN_ERR DRV_NAME |
| ": cannot add bond %s; it already exists\n", |
| ifname); |
| res = -EPERM; |
| goto out; |
| } |
| |
| printk(KERN_INFO DRV_NAME |
| ": %s is being created...\n", ifname); |
| if (bond_create(ifname, &bonding_defaults, &bond)) { |
| printk(KERN_INFO DRV_NAME |
| ": %s interface already exists. Bond creation failed.\n", |
| ifname); |
| res = -EPERM; |
| } |
| goto out; |
| } |
| |
| if (command[0] == '-') { |
| list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list) |
| if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) { |
| rtnl_lock(); |
| /* check the ref count on the bond's kobject. |
| * If it's > expected, then there's a file open, |
| * and we have to fail. |
| */ |
| if (atomic_read(&bond->dev->dev.kobj.kref.refcount) |
| > expected_refcount){ |
| rtnl_unlock(); |
| printk(KERN_INFO DRV_NAME |
| ": Unable remove bond %s due to open references.\n", |
| ifname); |
| res = -EPERM; |
| goto out; |
| } |
| printk(KERN_INFO DRV_NAME |
| ": %s is being deleted...\n", |
| bond->dev->name); |
| bond_deinit(bond->dev); |
| bond_destroy_sysfs_entry(bond); |
| unregister_netdevice(bond->dev); |
| rtnl_unlock(); |
| goto out; |
| } |
| |
| printk(KERN_ERR DRV_NAME |
| ": unable to delete non-existent bond %s\n", ifname); |
| res = -ENODEV; |
| goto out; |
| } |
| |
| err_no_cmd: |
| printk(KERN_ERR DRV_NAME |
| ": no command found in bonding_masters. Use +ifname or -ifname.\n"); |
| res = -EPERM; |
| |
| /* Always return either count or an error. If you return 0, you'll |
| * get called forever, which is bad. |
| */ |
| out: |
| up_write(&(bonding_rwsem)); |
| return res; |
| } |
| /* class attribute for bond_masters file. This ends up in /sys/class/net */ |
| static CLASS_ATTR(bonding_masters, S_IWUSR | S_IRUGO, |
| bonding_show_bonds, bonding_store_bonds); |
| |
| int bond_create_slave_symlinks(struct net_device *master, struct net_device *slave) |
| { |
| char linkname[IFNAMSIZ+7]; |
| int ret = 0; |
| |
| /* first, create a link from the slave back to the master */ |
| ret = sysfs_create_link(&(slave->dev.kobj), &(master->dev.kobj), |
| "master"); |
| if (ret) |
| return ret; |
| /* next, create a link from the master to the slave */ |
| sprintf(linkname,"slave_%s",slave->name); |
| ret = sysfs_create_link(&(master->dev.kobj), &(slave->dev.kobj), |
| linkname); |
| return ret; |
| |
| } |
| |
| void bond_destroy_slave_symlinks(struct net_device *master, struct net_device *slave) |
| { |
| char linkname[IFNAMSIZ+7]; |
| |
| sysfs_remove_link(&(slave->dev.kobj), "master"); |
| sprintf(linkname,"slave_%s",slave->name); |
| sysfs_remove_link(&(master->dev.kobj), linkname); |
| } |
| |
| |
| /* |
| * Show the slaves in the current bond. |
| */ |
| static ssize_t bonding_show_slaves(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct slave *slave; |
| int i, res = 0; |
| struct bonding *bond = to_bond(d); |
| |
| read_lock_bh(&bond->lock); |
| bond_for_each_slave(bond, slave, i) { |
| if (res > (PAGE_SIZE - IFNAMSIZ)) { |
| /* not enough space for another interface name */ |
| if ((PAGE_SIZE - res) > 10) |
| res = PAGE_SIZE - 10; |
| res += sprintf(buf + res, "++more++"); |
| break; |
| } |
| res += sprintf(buf + res, "%s ", slave->dev->name); |
| } |
| read_unlock_bh(&bond->lock); |
| res += sprintf(buf + res, "\n"); |
| res++; |
| return res; |
| } |
| |
| /* |
| * Set the slaves in the current bond. The bond interface must be |
| * up for this to succeed. |
| * This function is largely the same flow as bonding_update_bonds(). |
| */ |
| static ssize_t bonding_store_slaves(struct device *d, |
| struct device_attribute *attr, |
| const char *buffer, size_t count) |
| { |
| char command[IFNAMSIZ + 1] = { 0, }; |
| char *ifname; |
| int i, res, found, ret = count; |
| struct slave *slave; |
| struct net_device *dev = NULL; |
| struct bonding *bond = to_bond(d); |
| |
| /* Quick sanity check -- is the bond interface up? */ |
| if (!(bond->dev->flags & IFF_UP)) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: Unable to update slaves because interface is down.\n", |
| bond->dev->name); |
| ret = -EPERM; |
| goto out; |
| } |
| |
| /* Note: We can't hold bond->lock here, as bond_create grabs it. */ |
| |
| sscanf(buffer, "%16s", command); /* IFNAMSIZ*/ |
| ifname = command + 1; |
| if ((strlen(command) <= 1) || |
| !dev_valid_name(ifname)) |
| goto err_no_cmd; |
| |
| if (command[0] == '+') { |
| |
| /* Got a slave name in ifname. Is it already in the list? */ |
| found = 0; |
| read_lock_bh(&bond->lock); |
| bond_for_each_slave(bond, slave, i) |
| if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: Interface %s is already enslaved!\n", |
| bond->dev->name, ifname); |
| ret = -EPERM; |
| read_unlock_bh(&bond->lock); |
| goto out; |
| } |
| |
| read_unlock_bh(&bond->lock); |
| printk(KERN_INFO DRV_NAME ": %s: Adding slave %s.\n", |
| bond->dev->name, ifname); |
| dev = dev_get_by_name(&init_net, ifname); |
| if (!dev) { |
| printk(KERN_INFO DRV_NAME |
| ": %s: Interface %s does not exist!\n", |
| bond->dev->name, ifname); |
| ret = -EPERM; |
| goto out; |
| } |
| else |
| dev_put(dev); |
| |
| if (dev->flags & IFF_UP) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: Error: Unable to enslave %s " |
| "because it is already up.\n", |
| bond->dev->name, dev->name); |
| ret = -EPERM; |
| goto out; |
| } |
| /* If this is the first slave, then we need to set |
| the master's hardware address to be the same as the |
| slave's. */ |
| if (!(*((u32 *) & (bond->dev->dev_addr[0])))) { |
| memcpy(bond->dev->dev_addr, dev->dev_addr, |
| dev->addr_len); |
| } |
| |
| /* Set the slave's MTU to match the bond */ |
| if (dev->mtu != bond->dev->mtu) { |
| if (dev->change_mtu) { |
| res = dev->change_mtu(dev, |
| bond->dev->mtu); |
| if (res) { |
| ret = res; |
| goto out; |
| } |
| } else { |
| dev->mtu = bond->dev->mtu; |
| } |
| } |
| rtnl_lock(); |
| res = bond_enslave(bond->dev, dev); |
| rtnl_unlock(); |
| if (res) { |
| ret = res; |
| } |
| goto out; |
| } |
| |
| if (command[0] == '-') { |
| dev = NULL; |
| bond_for_each_slave(bond, slave, i) |
| if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) { |
| dev = slave->dev; |
| break; |
| } |
| if (dev) { |
| printk(KERN_INFO DRV_NAME ": %s: Removing slave %s\n", |
| bond->dev->name, dev->name); |
| rtnl_lock(); |
| res = bond_release(bond->dev, dev); |
| rtnl_unlock(); |
| if (res) { |
| ret = res; |
| goto out; |
| } |
| /* set the slave MTU to the default */ |
| if (dev->change_mtu) { |
| dev->change_mtu(dev, 1500); |
| } else { |
| dev->mtu = 1500; |
| } |
| } |
| else { |
| printk(KERN_ERR DRV_NAME ": unable to remove non-existent slave %s for bond %s.\n", |
| ifname, bond->dev->name); |
| ret = -ENODEV; |
| } |
| goto out; |
| } |
| |
| err_no_cmd: |
| printk(KERN_ERR DRV_NAME ": no command found in slaves file for bond %s. Use +ifname or -ifname.\n", bond->dev->name); |
| ret = -EPERM; |
| |
| out: |
| return ret; |
| } |
| |
| static DEVICE_ATTR(slaves, S_IRUGO | S_IWUSR, bonding_show_slaves, bonding_store_slaves); |
| |
| /* |
| * Show and set the bonding mode. The bond interface must be down to |
| * change the mode. |
| */ |
| static ssize_t bonding_show_mode(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct bonding *bond = to_bond(d); |
| |
| return sprintf(buf, "%s %d\n", |
| bond_mode_tbl[bond->params.mode].modename, |
| bond->params.mode) + 1; |
| } |
| |
| static ssize_t bonding_store_mode(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int new_value, ret = count; |
| struct bonding *bond = to_bond(d); |
| |
| if (bond->dev->flags & IFF_UP) { |
| printk(KERN_ERR DRV_NAME |
| ": unable to update mode of %s because interface is up.\n", |
| bond->dev->name); |
| ret = -EPERM; |
| goto out; |
| } |
| |
| new_value = bond_parse_parm((char *)buf, bond_mode_tbl); |
| if (new_value < 0) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: Ignoring invalid mode value %.*s.\n", |
| bond->dev->name, |
| (int)strlen(buf) - 1, buf); |
| ret = -EINVAL; |
| goto out; |
| } else { |
| if (bond->params.mode == BOND_MODE_8023AD) |
| bond_unset_master_3ad_flags(bond); |
| |
| if (bond->params.mode == BOND_MODE_ALB) |
| bond_unset_master_alb_flags(bond); |
| |
| bond->params.mode = new_value; |
| bond_set_mode_ops(bond, bond->params.mode); |
| printk(KERN_INFO DRV_NAME ": %s: setting mode to %s (%d).\n", |
| bond->dev->name, bond_mode_tbl[new_value].modename, new_value); |
| } |
| out: |
| return ret; |
| } |
| static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR, bonding_show_mode, bonding_store_mode); |
| |
| /* |
| * Show and set the bonding transmit hash method. The bond interface must be down to |
| * change the xmit hash policy. |
| */ |
| static ssize_t bonding_show_xmit_hash(struct device *d, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int count; |
| struct bonding *bond = to_bond(d); |
| |
| if ((bond->params.mode != BOND_MODE_XOR) && |
| (bond->params.mode != BOND_MODE_8023AD)) { |
| // Not Applicable |
| count = sprintf(buf, "NA\n") + 1; |
| } else { |
| count = sprintf(buf, "%s %d\n", |
| xmit_hashtype_tbl[bond->params.xmit_policy].modename, |
| bond->params.xmit_policy) + 1; |
| } |
| |
| return count; |
| } |
| |
| static ssize_t bonding_store_xmit_hash(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int new_value, ret = count; |
| struct bonding *bond = to_bond(d); |
| |
| if (bond->dev->flags & IFF_UP) { |
| printk(KERN_ERR DRV_NAME |
| "%s: Interface is up. Unable to update xmit policy.\n", |
| bond->dev->name); |
| ret = -EPERM; |
| goto out; |
| } |
| |
| if ((bond->params.mode != BOND_MODE_XOR) && |
| (bond->params.mode != BOND_MODE_8023AD)) { |
| printk(KERN_ERR DRV_NAME |
| "%s: Transmit hash policy is irrelevant in this mode.\n", |
| bond->dev->name); |
| ret = -EPERM; |
| goto out; |
| } |
| |
| new_value = bond_parse_parm((char *)buf, xmit_hashtype_tbl); |
| if (new_value < 0) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: Ignoring invalid xmit hash policy value %.*s.\n", |
| bond->dev->name, |
| (int)strlen(buf) - 1, buf); |
| ret = -EINVAL; |
| goto out; |
| } else { |
| bond->params.xmit_policy = new_value; |
| bond_set_mode_ops(bond, bond->params.mode); |
| printk(KERN_INFO DRV_NAME ": %s: setting xmit hash policy to %s (%d).\n", |
| bond->dev->name, xmit_hashtype_tbl[new_value].modename, new_value); |
| } |
| out: |
| return ret; |
| } |
| static DEVICE_ATTR(xmit_hash_policy, S_IRUGO | S_IWUSR, bonding_show_xmit_hash, bonding_store_xmit_hash); |
| |
| /* |
| * Show and set arp_validate. |
| */ |
| static ssize_t bonding_show_arp_validate(struct device *d, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct bonding *bond = to_bond(d); |
| |
| return sprintf(buf, "%s %d\n", |
| arp_validate_tbl[bond->params.arp_validate].modename, |
| bond->params.arp_validate) + 1; |
| } |
| |
| static ssize_t bonding_store_arp_validate(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int new_value; |
| struct bonding *bond = to_bond(d); |
| |
| new_value = bond_parse_parm((char *)buf, arp_validate_tbl); |
| if (new_value < 0) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: Ignoring invalid arp_validate value %s\n", |
| bond->dev->name, buf); |
| return -EINVAL; |
| } |
| if (new_value && (bond->params.mode != BOND_MODE_ACTIVEBACKUP)) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: arp_validate only supported in active-backup mode.\n", |
| bond->dev->name); |
| return -EINVAL; |
| } |
| printk(KERN_INFO DRV_NAME ": %s: setting arp_validate to %s (%d).\n", |
| bond->dev->name, arp_validate_tbl[new_value].modename, |
| new_value); |
| |
| if (!bond->params.arp_validate && new_value) { |
| bond_register_arp(bond); |
| } else if (bond->params.arp_validate && !new_value) { |
| bond_unregister_arp(bond); |
| } |
| |
| bond->params.arp_validate = new_value; |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(arp_validate, S_IRUGO | S_IWUSR, bonding_show_arp_validate, bonding_store_arp_validate); |
| |
| /* |
| * Show and set the arp timer interval. There are two tricky bits |
| * here. First, if ARP monitoring is activated, then we must disable |
| * MII monitoring. Second, if the ARP timer isn't running, we must |
| * start it. |
| */ |
| static ssize_t bonding_show_arp_interval(struct device *d, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct bonding *bond = to_bond(d); |
| |
| return sprintf(buf, "%d\n", bond->params.arp_interval) + 1; |
| } |
| |
| static ssize_t bonding_store_arp_interval(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int new_value, ret = count; |
| struct bonding *bond = to_bond(d); |
| |
| if (sscanf(buf, "%d", &new_value) != 1) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: no arp_interval value specified.\n", |
| bond->dev->name); |
| ret = -EINVAL; |
| goto out; |
| } |
| if (new_value < 0) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: Invalid arp_interval value %d not in range 1-%d; rejected.\n", |
| bond->dev->name, new_value, INT_MAX); |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| printk(KERN_INFO DRV_NAME |
| ": %s: Setting ARP monitoring interval to %d.\n", |
| bond->dev->name, new_value); |
| bond->params.arp_interval = new_value; |
| if (bond->params.miimon) { |
| printk(KERN_INFO DRV_NAME |
| ": %s: ARP monitoring cannot be used with MII monitoring. " |
| "%s Disabling MII monitoring.\n", |
| bond->dev->name, bond->dev->name); |
| bond->params.miimon = 0; |
| /* Kill MII timer, else it brings bond's link down */ |
| if (bond->arp_timer.function) { |
| printk(KERN_INFO DRV_NAME |
| ": %s: Kill MII timer, else it brings bond's link down...\n", |
| bond->dev->name); |
| del_timer_sync(&bond->mii_timer); |
| } |
| } |
| if (!bond->params.arp_targets[0]) { |
| printk(KERN_INFO DRV_NAME |
| ": %s: ARP monitoring has been set up, " |
| "but no ARP targets have been specified.\n", |
| bond->dev->name); |
| } |
| if (bond->dev->flags & IFF_UP) { |
| /* If the interface is up, we may need to fire off |
| * the ARP timer. If the interface is down, the |
| * timer will get fired off when the open function |
| * is called. |
| */ |
| if (bond->arp_timer.function) { |
| /* The timer's already set up, so fire it off */ |
| mod_timer(&bond->arp_timer, jiffies + 1); |
| } else { |
| /* Set up the timer. */ |
| init_timer(&bond->arp_timer); |
| bond->arp_timer.expires = jiffies + 1; |
| bond->arp_timer.data = |
| (unsigned long) bond->dev; |
| if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) { |
| bond->arp_timer.function = |
| (void *) |
| &bond_activebackup_arp_mon; |
| } else { |
| bond->arp_timer.function = |
| (void *) |
| &bond_loadbalance_arp_mon; |
| } |
| add_timer(&bond->arp_timer); |
| } |
| } |
| |
| out: |
| return ret; |
| } |
| static DEVICE_ATTR(arp_interval, S_IRUGO | S_IWUSR , bonding_show_arp_interval, bonding_store_arp_interval); |
| |
| /* |
| * Show and set the arp targets. |
| */ |
| static ssize_t bonding_show_arp_targets(struct device *d, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int i, res = 0; |
| struct bonding *bond = to_bond(d); |
| |
| for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { |
| if (bond->params.arp_targets[i]) |
| res += sprintf(buf + res, "%u.%u.%u.%u ", |
| NIPQUAD(bond->params.arp_targets[i])); |
| } |
| if (res) |
| res--; /* eat the leftover space */ |
| res += sprintf(buf + res, "\n"); |
| res++; |
| return res; |
| } |
| |
| static ssize_t bonding_store_arp_targets(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| u32 newtarget; |
| int i = 0, done = 0, ret = count; |
| struct bonding *bond = to_bond(d); |
| u32 *targets; |
| |
| targets = bond->params.arp_targets; |
| newtarget = in_aton(buf + 1); |
| /* look for adds */ |
| if (buf[0] == '+') { |
| if ((newtarget == 0) || (newtarget == INADDR_BROADCAST)) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: invalid ARP target %u.%u.%u.%u specified for addition\n", |
| bond->dev->name, NIPQUAD(newtarget)); |
| ret = -EINVAL; |
| goto out; |
| } |
| /* look for an empty slot to put the target in, and check for dupes */ |
| for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { |
| if (targets[i] == newtarget) { /* duplicate */ |
| printk(KERN_ERR DRV_NAME |
| ": %s: ARP target %u.%u.%u.%u is already present\n", |
| bond->dev->name, NIPQUAD(newtarget)); |
| if (done) |
| targets[i] = 0; |
| ret = -EINVAL; |
| goto out; |
| } |
| if (targets[i] == 0 && !done) { |
| printk(KERN_INFO DRV_NAME |
| ": %s: adding ARP target %d.%d.%d.%d.\n", |
| bond->dev->name, NIPQUAD(newtarget)); |
| done = 1; |
| targets[i] = newtarget; |
| } |
| } |
| if (!done) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: ARP target table is full!\n", |
| bond->dev->name); |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| } |
| else if (buf[0] == '-') { |
| if ((newtarget == 0) || (newtarget == INADDR_BROADCAST)) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: invalid ARP target %d.%d.%d.%d specified for removal\n", |
| bond->dev->name, NIPQUAD(newtarget)); |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { |
| if (targets[i] == newtarget) { |
| printk(KERN_INFO DRV_NAME |
| ": %s: removing ARP target %d.%d.%d.%d.\n", |
| bond->dev->name, NIPQUAD(newtarget)); |
| targets[i] = 0; |
| done = 1; |
| } |
| } |
| if (!done) { |
| printk(KERN_INFO DRV_NAME |
| ": %s: unable to remove nonexistent ARP target %d.%d.%d.%d.\n", |
| bond->dev->name, NIPQUAD(newtarget)); |
| ret = -EINVAL; |
| goto out; |
| } |
| } |
| else { |
| printk(KERN_ERR DRV_NAME ": no command found in arp_ip_targets file for bond %s. Use +<addr> or -<addr>.\n", |
| bond->dev->name); |
| ret = -EPERM; |
| goto out; |
| } |
| |
| out: |
| return ret; |
| } |
| static DEVICE_ATTR(arp_ip_target, S_IRUGO | S_IWUSR , bonding_show_arp_targets, bonding_store_arp_targets); |
| |
| /* |
| * Show and set the up and down delays. These must be multiples of the |
| * MII monitoring value, and are stored internally as the multiplier. |
| * Thus, we must translate to MS for the real world. |
| */ |
| static ssize_t bonding_show_downdelay(struct device *d, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct bonding *bond = to_bond(d); |
| |
| return sprintf(buf, "%d\n", bond->params.downdelay * bond->params.miimon) + 1; |
| } |
| |
| static ssize_t bonding_store_downdelay(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int new_value, ret = count; |
| struct bonding *bond = to_bond(d); |
| |
| if (!(bond->params.miimon)) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: Unable to set down delay as MII monitoring is disabled\n", |
| bond->dev->name); |
| ret = -EPERM; |
| goto out; |
| } |
| |
| if (sscanf(buf, "%d", &new_value) != 1) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: no down delay value specified.\n", |
| bond->dev->name); |
| ret = -EINVAL; |
| goto out; |
| } |
| if (new_value < 0) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n", |
| bond->dev->name, new_value, 1, INT_MAX); |
| ret = -EINVAL; |
| goto out; |
| } else { |
| if ((new_value % bond->params.miimon) != 0) { |
| printk(KERN_WARNING DRV_NAME |
| ": %s: Warning: down delay (%d) is not a multiple " |
| "of miimon (%d), delay rounded to %d ms\n", |
| bond->dev->name, new_value, bond->params.miimon, |
| (new_value / bond->params.miimon) * |
| bond->params.miimon); |
| } |
| bond->params.downdelay = new_value / bond->params.miimon; |
| printk(KERN_INFO DRV_NAME ": %s: Setting down delay to %d.\n", |
| bond->dev->name, bond->params.downdelay * bond->params.miimon); |
| |
| } |
| |
| out: |
| return ret; |
| } |
| static DEVICE_ATTR(downdelay, S_IRUGO | S_IWUSR , bonding_show_downdelay, bonding_store_downdelay); |
| |
| static ssize_t bonding_show_updelay(struct device *d, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct bonding *bond = to_bond(d); |
| |
| return sprintf(buf, "%d\n", bond->params.updelay * bond->params.miimon) + 1; |
| |
| } |
| |
| static ssize_t bonding_store_updelay(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int new_value, ret = count; |
| struct bonding *bond = to_bond(d); |
| |
| if (!(bond->params.miimon)) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: Unable to set up delay as MII monitoring is disabled\n", |
| bond->dev->name); |
| ret = -EPERM; |
| goto out; |
| } |
| |
| if (sscanf(buf, "%d", &new_value) != 1) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: no up delay value specified.\n", |
| bond->dev->name); |
| ret = -EINVAL; |
| goto out; |
| } |
| if (new_value < 0) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n", |
| bond->dev->name, new_value, 1, INT_MAX); |
| ret = -EINVAL; |
| goto out; |
| } else { |
| if ((new_value % bond->params.miimon) != 0) { |
| printk(KERN_WARNING DRV_NAME |
| ": %s: Warning: up delay (%d) is not a multiple " |
| "of miimon (%d), updelay rounded to %d ms\n", |
| bond->dev->name, new_value, bond->params.miimon, |
| (new_value / bond->params.miimon) * |
| bond->params.miimon); |
| } |
| bond->params.updelay = new_value / bond->params.miimon; |
| printk(KERN_INFO DRV_NAME ": %s: Setting up delay to %d.\n", |
| bond->dev->name, bond->params.updelay * bond->params.miimon); |
| |
| } |
| |
| out: |
| return ret; |
| } |
| static DEVICE_ATTR(updelay, S_IRUGO | S_IWUSR , bonding_show_updelay, bonding_store_updelay); |
| |
| /* |
| * Show and set the LACP interval. Interface must be down, and the mode |
| * must be set to 802.3ad mode. |
| */ |
| static ssize_t bonding_show_lacp(struct device *d, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct bonding *bond = to_bond(d); |
| |
| return sprintf(buf, "%s %d\n", |
| bond_lacp_tbl[bond->params.lacp_fast].modename, |
| bond->params.lacp_fast) + 1; |
| } |
| |
| static ssize_t bonding_store_lacp(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int new_value, ret = count; |
| struct bonding *bond = to_bond(d); |
| |
| if (bond->dev->flags & IFF_UP) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: Unable to update LACP rate because interface is up.\n", |
| bond->dev->name); |
| ret = -EPERM; |
| goto out; |
| } |
| |
| if (bond->params.mode != BOND_MODE_8023AD) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: Unable to update LACP rate because bond is not in 802.3ad mode.\n", |
| bond->dev->name); |
| ret = -EPERM; |
| goto out; |
| } |
| |
| new_value = bond_parse_parm((char *)buf, bond_lacp_tbl); |
| |
| if ((new_value == 1) || (new_value == 0)) { |
| bond->params.lacp_fast = new_value; |
| printk(KERN_INFO DRV_NAME |
| ": %s: Setting LACP rate to %s (%d).\n", |
| bond->dev->name, bond_lacp_tbl[new_value].modename, new_value); |
| } else { |
| printk(KERN_ERR DRV_NAME |
| ": %s: Ignoring invalid LACP rate value %.*s.\n", |
| bond->dev->name, (int)strlen(buf) - 1, buf); |
| ret = -EINVAL; |
| } |
| out: |
| return ret; |
| } |
| static DEVICE_ATTR(lacp_rate, S_IRUGO | S_IWUSR, bonding_show_lacp, bonding_store_lacp); |
| |
| /* |
| * Show and set the MII monitor interval. There are two tricky bits |
| * here. First, if MII monitoring is activated, then we must disable |
| * ARP monitoring. Second, if the timer isn't running, we must |
| * start it. |
| */ |
| static ssize_t bonding_show_miimon(struct device *d, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct bonding *bond = to_bond(d); |
| |
| return sprintf(buf, "%d\n", bond->params.miimon) + 1; |
| } |
| |
| static ssize_t bonding_store_miimon(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int new_value, ret = count; |
| struct bonding *bond = to_bond(d); |
| |
| if (sscanf(buf, "%d", &new_value) != 1) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: no miimon value specified.\n", |
| bond->dev->name); |
| ret = -EINVAL; |
| goto out; |
| } |
| if (new_value < 0) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: Invalid miimon value %d not in range %d-%d; rejected.\n", |
| bond->dev->name, new_value, 1, INT_MAX); |
| ret = -EINVAL; |
| goto out; |
| } else { |
| printk(KERN_INFO DRV_NAME |
| ": %s: Setting MII monitoring interval to %d.\n", |
| bond->dev->name, new_value); |
| bond->params.miimon = new_value; |
| if(bond->params.updelay) |
| printk(KERN_INFO DRV_NAME |
| ": %s: Note: Updating updelay (to %d) " |
| "since it is a multiple of the miimon value.\n", |
| bond->dev->name, |
| bond->params.updelay * bond->params.miimon); |
| if(bond->params.downdelay) |
| printk(KERN_INFO DRV_NAME |
| ": %s: Note: Updating downdelay (to %d) " |
| "since it is a multiple of the miimon value.\n", |
| bond->dev->name, |
| bond->params.downdelay * bond->params.miimon); |
| if (bond->params.arp_interval) { |
| printk(KERN_INFO DRV_NAME |
| ": %s: MII monitoring cannot be used with " |
| "ARP monitoring. Disabling ARP monitoring...\n", |
| bond->dev->name); |
| bond->params.arp_interval = 0; |
| if (bond->params.arp_validate) { |
| bond_unregister_arp(bond); |
| bond->params.arp_validate = |
| BOND_ARP_VALIDATE_NONE; |
| } |
| /* Kill ARP timer, else it brings bond's link down */ |
| if (bond->mii_timer.function) { |
| printk(KERN_INFO DRV_NAME |
| ": %s: Kill ARP timer, else it brings bond's link down...\n", |
| bond->dev->name); |
| del_timer_sync(&bond->arp_timer); |
| } |
| } |
| |
| if (bond->dev->flags & IFF_UP) { |
| /* If the interface is up, we may need to fire off |
| * the MII timer. If the interface is down, the |
| * timer will get fired off when the open function |
| * is called. |
| */ |
| if (bond->mii_timer.function) { |
| /* The timer's already set up, so fire it off */ |
| mod_timer(&bond->mii_timer, jiffies + 1); |
| } else { |
| /* Set up the timer. */ |
| init_timer(&bond->mii_timer); |
| bond->mii_timer.expires = jiffies + 1; |
| bond->mii_timer.data = |
| (unsigned long) bond->dev; |
| bond->mii_timer.function = |
| (void *) &bond_mii_monitor; |
| add_timer(&bond->mii_timer); |
| } |
| } |
| } |
| out: |
| return ret; |
| } |
| static DEVICE_ATTR(miimon, S_IRUGO | S_IWUSR, bonding_show_miimon, bonding_store_miimon); |
| |
| /* |
| * Show and set the primary slave. The store function is much |
| * simpler than bonding_store_slaves function because it only needs to |
| * handle one interface name. |
| * The bond must be a mode that supports a primary for this be |
| * set. |
| */ |
| static ssize_t bonding_show_primary(struct device *d, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int count = 0; |
| struct bonding *bond = to_bond(d); |
| |
| if (bond->primary_slave) |
| count = sprintf(buf, "%s\n", bond->primary_slave->dev->name) + 1; |
| else |
| count = sprintf(buf, "\n") + 1; |
| |
| return count; |
| } |
| |
| static ssize_t bonding_store_primary(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int i; |
| struct slave *slave; |
| struct bonding *bond = to_bond(d); |
| |
| write_lock_bh(&bond->lock); |
| if (!USES_PRIMARY(bond->params.mode)) { |
| printk(KERN_INFO DRV_NAME |
| ": %s: Unable to set primary slave; %s is in mode %d\n", |
| bond->dev->name, bond->dev->name, bond->params.mode); |
| } else { |
| bond_for_each_slave(bond, slave, i) { |
| if (strnicmp |
| (slave->dev->name, buf, |
| strlen(slave->dev->name)) == 0) { |
| printk(KERN_INFO DRV_NAME |
| ": %s: Setting %s as primary slave.\n", |
| bond->dev->name, slave->dev->name); |
| bond->primary_slave = slave; |
| bond_select_active_slave(bond); |
| goto out; |
| } |
| } |
| |
| /* if we got here, then we didn't match the name of any slave */ |
| |
| if (strlen(buf) == 0 || buf[0] == '\n') { |
| printk(KERN_INFO DRV_NAME |
| ": %s: Setting primary slave to None.\n", |
| bond->dev->name); |
| bond->primary_slave = NULL; |
| bond_select_active_slave(bond); |
| } else { |
| printk(KERN_INFO DRV_NAME |
| ": %s: Unable to set %.*s as primary slave as it is not a slave.\n", |
| bond->dev->name, (int)strlen(buf) - 1, buf); |
| } |
| } |
| out: |
| write_unlock_bh(&bond->lock); |
| return count; |
| } |
| static DEVICE_ATTR(primary, S_IRUGO | S_IWUSR, bonding_show_primary, bonding_store_primary); |
| |
| /* |
| * Show and set the use_carrier flag. |
| */ |
| static ssize_t bonding_show_carrier(struct device *d, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct bonding *bond = to_bond(d); |
| |
| return sprintf(buf, "%d\n", bond->params.use_carrier) + 1; |
| } |
| |
| static ssize_t bonding_store_carrier(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int new_value, ret = count; |
| struct bonding *bond = to_bond(d); |
| |
| |
| if (sscanf(buf, "%d", &new_value) != 1) { |
| printk(KERN_ERR DRV_NAME |
| ": %s: no use_carrier value specified.\n", |
| bond->dev->name); |
| ret = -EINVAL; |
| goto out; |
| } |
| if ((new_value == 0) || (new_value == 1)) { |
| bond->params.use_carrier = new_value; |
| printk(KERN_INFO DRV_NAME ": %s: Setting use_carrier to %d.\n", |
| bond->dev->name, new_value); |
| } else { |
| printk(KERN_INFO DRV_NAME |
| ": %s: Ignoring invalid use_carrier value %d.\n", |
| bond->dev->name, new_value); |
| } |
| out: |
| return count; |
| } |
| static DEVICE_ATTR(use_carrier, S_IRUGO | S_IWUSR, bonding_show_carrier, bonding_store_carrier); |
| |
| |
| /* |
| * Show and set currently active_slave. |
| */ |
| static ssize_t bonding_show_active_slave(struct device *d, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct slave *curr; |
| struct bonding *bond = to_bond(d); |
| int count; |
| |
| |
| read_lock(&bond->curr_slave_lock); |
| curr = bond->curr_active_slave; |
| read_unlock(&bond->curr_slave_lock); |
| |
| if (USES_PRIMARY(bond->params.mode) && curr) |
| count = sprintf(buf, "%s\n", curr->dev->name) + 1; |
| else |
| count = sprintf(buf, "\n") + 1; |
| return count; |
| } |
| |
| static ssize_t bonding_store_active_slave(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int i; |
| struct slave *slave; |
| struct slave *old_active = NULL; |
| struct slave *new_active = NULL; |
| struct bonding *bond = to_bond(d); |
| |
| write_lock_bh(&bond->lock); |
| if (!USES_PRIMARY(bond->params.mode)) { |
| printk(KERN_INFO DRV_NAME |
| ": %s: Unable to change active slave; %s is in mode %d\n", |
| bond->dev->name, bond->dev->name, bond->params.mode); |
| } else { |
| bond_for_each_slave(bond, slave, i) { |
| if (strnicmp |
| (slave->dev->name, buf, |
| strlen(slave->dev->name)) == 0) { |
| old_active = bond->curr_active_slave; |
| new_active = slave; |
| if (new_active == old_active) { |
| /* do nothing */ |
| printk(KERN_INFO DRV_NAME |
| ": %s: %s is already the current active slave.\n", |
| bond->dev->name, slave->dev->name); |
| goto out; |
| } |
| else { |
| if ((new_active) && |
| (old_active) && |
| (new_active->link == BOND_LINK_UP) && |
| IS_UP(new_active->dev)) { |
| printk(KERN_INFO DRV_NAME |
| ": %s: Setting %s as active slave.\n", |
| bond->dev->name, slave->dev->name); |
| bond_change_active_slave(bond, new_active); |
| } |
| else { |
| printk(KERN_INFO DRV_NAME |
| ": %s: Could not set %s as active slave; " |
| "either %s is down or the link is down.\n", |
| bond->dev->name, slave->dev->name, |
| slave->dev->name); |
| } |
| goto out; |
| } |
| } |
| } |
| |
| /* if we got here, then we didn't match the name of any slave */ |
| |
| if (strlen(buf) == 0 || buf[0] == '\n') { |
| printk(KERN_INFO DRV_NAME |
| ": %s: Setting active slave to None.\n", |
| bond->dev->name); |
| bond->primary_slave = NULL; |
| bond_select_active_slave(bond); |
| } else { |
| printk(KERN_INFO DRV_NAME |
| ": %s: Unable to set %.*s as active slave as it is not a slave.\n", |
| bond->dev->name, (int)strlen(buf) - 1, buf); |
| } |
| } |
| out: |
| write_unlock_bh(&bond->lock); |
| return count; |
| |
| } |
| static DEVICE_ATTR(active_slave, S_IRUGO | S_IWUSR, bonding_show_active_slave, bonding_store_active_slave); |
| |
| |
| /* |
| * Show link status of the bond interface. |
| */ |
| static ssize_t bonding_show_mii_status(struct device *d, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct slave *curr; |
| struct bonding *bond = to_bond(d); |
| |
| read_lock(&bond->curr_slave_lock); |
| curr = bond->curr_active_slave; |
| read_unlock(&bond->curr_slave_lock); |
| |
| return sprintf(buf, "%s\n", (curr) ? "up" : "down") + 1; |
| } |
| static DEVICE_ATTR(mii_status, S_IRUGO, bonding_show_mii_status, NULL); |
| |
| |
| /* |
| * Show current 802.3ad aggregator ID. |
| */ |
| static ssize_t bonding_show_ad_aggregator(struct device *d, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int count = 0; |
| struct bonding *bond = to_bond(d); |
| |
| if (bond->params.mode == BOND_MODE_8023AD) { |
| struct ad_info ad_info; |
| count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.aggregator_id) + 1; |
| } |
| else |
| count = sprintf(buf, "\n") + 1; |
| |
| return count; |
| } |
| static DEVICE_ATTR(ad_aggregator, S_IRUGO, bonding_show_ad_aggregator, NULL); |
| |
| |
| /* |
| * Show number of active 802.3ad ports. |
| */ |
| static ssize_t bonding_show_ad_num_ports(struct device *d, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int count = 0; |
| struct bonding *bond = to_bond(d); |
| |
| if (bond->params.mode == BOND_MODE_8023AD) { |
| struct ad_info ad_info; |
| count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0: ad_info.ports) + 1; |
| } |
| else |
| count = sprintf(buf, "\n") + 1; |
| |
| return count; |
| } |
| static DEVICE_ATTR(ad_num_ports, S_IRUGO, bonding_show_ad_num_ports, NULL); |
| |
| |
| /* |
| * Show current 802.3ad actor key. |
| */ |
| static ssize_t bonding_show_ad_actor_key(struct device *d, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int count = 0; |
| struct bonding *bond = to_bond(d); |
| |
| if (bond->params.mode == BOND_MODE_8023AD) { |
| struct ad_info ad_info; |
| count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.actor_key) + 1; |
| } |
| else |
| count = sprintf(buf, "\n") + 1; |
| |
| return count; |
| } |
| static DEVICE_ATTR(ad_actor_key, S_IRUGO, bonding_show_ad_actor_key, NULL); |
| |
| |
| /* |
| * Show current 802.3ad partner key. |
| */ |
| static ssize_t bonding_show_ad_partner_key(struct device *d, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int count = 0; |
| struct bonding *bond = to_bond(d); |
| |
| if (bond->params.mode == BOND_MODE_8023AD) { |
| struct ad_info ad_info; |
| count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.partner_key) + 1; |
| } |
| else |
| count = sprintf(buf, "\n") + 1; |
| |
| return count; |
| } |
| static DEVICE_ATTR(ad_partner_key, S_IRUGO, bonding_show_ad_partner_key, NULL); |
| |
| |
| /* |
| * Show current 802.3ad partner mac. |
| */ |
| static ssize_t bonding_show_ad_partner_mac(struct device *d, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int count = 0; |
| struct bonding *bond = to_bond(d); |
| DECLARE_MAC_BUF(mac); |
| |
| if (bond->params.mode == BOND_MODE_8023AD) { |
| struct ad_info ad_info; |
| if (!bond_3ad_get_active_agg_info(bond, &ad_info)) { |
| count = sprintf(buf,"%s\n", |
| print_mac(mac, ad_info.partner_system)) |
| + 1; |
| } |
| } |
| else |
| count = sprintf(buf, "\n") + 1; |
| |
| return count; |
| } |
| static DEVICE_ATTR(ad_partner_mac, S_IRUGO, bonding_show_ad_partner_mac, NULL); |
| |
| |
| |
| static struct attribute *per_bond_attrs[] = { |
| &dev_attr_slaves.attr, |
| &dev_attr_mode.attr, |
| &dev_attr_arp_validate.attr, |
| &dev_attr_arp_interval.attr, |
| &dev_attr_arp_ip_target.attr, |
| &dev_attr_downdelay.attr, |
| &dev_attr_updelay.attr, |
| &dev_attr_lacp_rate.attr, |
| &dev_attr_xmit_hash_policy.attr, |
| &dev_attr_miimon.attr, |
| &dev_attr_primary.attr, |
| &dev_attr_use_carrier.attr, |
| &dev_attr_active_slave.attr, |
| &dev_attr_mii_status.attr, |
| &dev_attr_ad_aggregator.attr, |
| &dev_attr_ad_num_ports.attr, |
| &dev_attr_ad_actor_key.attr, |
| &dev_attr_ad_partner_key.attr, |
| &dev_attr_ad_partner_mac.attr, |
| NULL, |
| }; |
| |
| static struct attribute_group bonding_group = { |
| .name = "bonding", |
| .attrs = per_bond_attrs, |
| }; |
| |
| /* |
| * Initialize sysfs. This sets up the bonding_masters file in |
| * /sys/class/net. |
| */ |
| int bond_create_sysfs(void) |
| { |
| int ret = 0; |
| struct bonding *firstbond; |
| |
| init_rwsem(&bonding_rwsem); |
| |
| /* get the netdev class pointer */ |
| firstbond = container_of(bond_dev_list.next, struct bonding, bond_list); |
| if (!firstbond) |
| return -ENODEV; |
| |
| netdev_class = firstbond->dev->dev.class; |
| if (!netdev_class) |
| return -ENODEV; |
| |
| ret = class_create_file(netdev_class, &class_attr_bonding_masters); |
| /* |
| * Permit multiple loads of the module by ignoring failures to |
| * create the bonding_masters sysfs file. Bonding devices |
| * created by second or subsequent loads of the module will |
| * not be listed in, or controllable by, bonding_masters, but |
| * will have the usual "bonding" sysfs directory. |
| * |
| * This is done to preserve backwards compatibility for |
| * initscripts/sysconfig, which load bonding multiple times to |
| * configure multiple bonding devices. |
| */ |
| if (ret == -EEXIST) { |
| netdev_class = NULL; |
| return 0; |
| } |
| |
| return ret; |
| |
| } |
| |
| /* |
| * Remove /sys/class/net/bonding_masters. |
| */ |
| void bond_destroy_sysfs(void) |
| { |
| if (netdev_class) |
| class_remove_file(netdev_class, &class_attr_bonding_masters); |
| } |
| |
| /* |
| * Initialize sysfs for each bond. This sets up and registers |
| * the 'bondctl' directory for each individual bond under /sys/class/net. |
| */ |
| int bond_create_sysfs_entry(struct bonding *bond) |
| { |
| struct net_device *dev = bond->dev; |
| int err; |
| |
| err = sysfs_create_group(&(dev->dev.kobj), &bonding_group); |
| if (err) { |
| printk(KERN_EMERG "eek! didn't create group!\n"); |
| } |
| |
| if (expected_refcount < 1) |
| expected_refcount = atomic_read(&bond->dev->dev.kobj.kref.refcount); |
| |
| return err; |
| } |
| /* |
| * Remove sysfs entries for each bond. |
| */ |
| void bond_destroy_sysfs_entry(struct bonding *bond) |
| { |
| struct net_device *dev = bond->dev; |
| |
| sysfs_remove_group(&(dev->dev.kobj), &bonding_group); |
| } |
| |