7893b2491a
With IPoIB, reception of gratuitous ARP by neighboring hosts is essential for a successful change of slaves in case of failure. Otherwise, they won't learn about the HW address change and need to wait a long time until the neighboring system gives up and sends an ARP request to learn the new HW address. This patch decreases the chance for a lost of a gratuitous ARP packet by sending it more than once. The number retries is configurable and can be set with a module param. Signed-off-by: Moni Shoua <monis@voltaire.com> Acked-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
1533 lines
41 KiB
C
1533 lines
41 KiB
C
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/*
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* Copyright(c) 2004-2005 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/sysdev.h>
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#include <linux/fs.h>
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#include <linux/types.h>
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#include <linux/string.h>
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#include <linux/netdevice.h>
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#include <linux/inetdevice.h>
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#include <linux/in.h>
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#include <linux/sysfs.h>
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#include <linux/ctype.h>
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#include <linux/inet.h>
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#include <linux/rtnetlink.h>
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#include <net/net_namespace.h>
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/* #define BONDING_DEBUG 1 */
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#include "bonding.h"
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#define to_dev(obj) container_of(obj,struct device,kobj)
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#define to_bond(cd) ((struct bonding *)(to_net_dev(cd)->priv))
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/*---------------------------- Declarations -------------------------------*/
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extern struct list_head bond_dev_list;
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extern struct bond_params bonding_defaults;
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extern struct bond_parm_tbl bond_mode_tbl[];
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extern struct bond_parm_tbl bond_lacp_tbl[];
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extern struct bond_parm_tbl xmit_hashtype_tbl[];
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extern struct bond_parm_tbl arp_validate_tbl[];
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static int expected_refcount = -1;
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static struct class *netdev_class;
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/*--------------------------- Data Structures -----------------------------*/
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/* Bonding sysfs lock. Why can't we just use the subsystem lock?
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* Because kobject_register tries to acquire the subsystem lock. If
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* we already hold the lock (which we would if the user was creating
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* a new bond through the sysfs interface), we deadlock.
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* This lock is only needed when deleting a bond - we need to make sure
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* that we don't collide with an ongoing ioctl.
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*/
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struct rw_semaphore bonding_rwsem;
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/*------------------------------ Functions --------------------------------*/
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/*
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* "show" function for the bond_masters attribute.
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* The class parameter is ignored.
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*/
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static ssize_t bonding_show_bonds(struct class *cls, char *buf)
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{
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int res = 0;
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struct bonding *bond;
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down_read(&(bonding_rwsem));
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list_for_each_entry(bond, &bond_dev_list, bond_list) {
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if (res > (PAGE_SIZE - IFNAMSIZ)) {
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/* not enough space for another interface name */
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if ((PAGE_SIZE - res) > 10)
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res = PAGE_SIZE - 10;
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res += sprintf(buf + res, "++more++ ");
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break;
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}
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res += sprintf(buf + res, "%s ", bond->dev->name);
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}
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if (res)
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buf[res-1] = '\n'; /* eat the leftover space */
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up_read(&(bonding_rwsem));
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return res;
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}
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/*
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* "store" function for the bond_masters attribute. This is what
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* creates and deletes entire bonds.
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*
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* The class parameter is ignored.
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*
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*/
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static ssize_t bonding_store_bonds(struct class *cls, const char *buffer, size_t count)
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{
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char command[IFNAMSIZ + 1] = {0, };
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char *ifname;
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int rv, res = count;
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struct bonding *bond;
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sscanf(buffer, "%16s", command); /* IFNAMSIZ*/
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ifname = command + 1;
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if ((strlen(command) <= 1) ||
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!dev_valid_name(ifname))
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goto err_no_cmd;
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if (command[0] == '+') {
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printk(KERN_INFO DRV_NAME
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": %s is being created...\n", ifname);
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rv = bond_create(ifname, &bonding_defaults);
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if (rv) {
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printk(KERN_INFO DRV_NAME ": Bond creation failed.\n");
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res = rv;
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}
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goto out;
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}
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if (command[0] == '-') {
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rtnl_lock();
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down_write(&bonding_rwsem);
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list_for_each_entry(bond, &bond_dev_list, bond_list)
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if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) {
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/* check the ref count on the bond's kobject.
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* If it's > expected, then there's a file open,
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* and we have to fail.
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*/
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if (atomic_read(&bond->dev->dev.kobj.kref.refcount)
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> expected_refcount){
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printk(KERN_INFO DRV_NAME
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": Unable remove bond %s due to open references.\n",
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ifname);
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res = -EPERM;
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goto out_unlock;
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}
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printk(KERN_INFO DRV_NAME
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": %s is being deleted...\n",
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bond->dev->name);
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bond_destroy(bond);
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goto out_unlock;
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}
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printk(KERN_ERR DRV_NAME
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": unable to delete non-existent bond %s\n", ifname);
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res = -ENODEV;
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goto out_unlock;
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}
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err_no_cmd:
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printk(KERN_ERR DRV_NAME
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": no command found in bonding_masters. Use +ifname or -ifname.\n");
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return -EPERM;
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out_unlock:
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up_write(&bonding_rwsem);
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rtnl_unlock();
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/* Always return either count or an error. If you return 0, you'll
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* get called forever, which is bad.
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*/
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out:
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return res;
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}
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/* class attribute for bond_masters file. This ends up in /sys/class/net */
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static CLASS_ATTR(bonding_masters, S_IWUSR | S_IRUGO,
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bonding_show_bonds, bonding_store_bonds);
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int bond_create_slave_symlinks(struct net_device *master, struct net_device *slave)
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{
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char linkname[IFNAMSIZ+7];
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int ret = 0;
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/* first, create a link from the slave back to the master */
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ret = sysfs_create_link(&(slave->dev.kobj), &(master->dev.kobj),
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"master");
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if (ret)
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return ret;
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/* next, create a link from the master to the slave */
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sprintf(linkname,"slave_%s",slave->name);
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ret = sysfs_create_link(&(master->dev.kobj), &(slave->dev.kobj),
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linkname);
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return ret;
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}
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void bond_destroy_slave_symlinks(struct net_device *master, struct net_device *slave)
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{
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char linkname[IFNAMSIZ+7];
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sysfs_remove_link(&(slave->dev.kobj), "master");
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sprintf(linkname,"slave_%s",slave->name);
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sysfs_remove_link(&(master->dev.kobj), linkname);
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}
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/*
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* Show the slaves in the current bond.
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*/
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static ssize_t bonding_show_slaves(struct device *d,
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struct device_attribute *attr, char *buf)
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{
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struct slave *slave;
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int i, res = 0;
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struct bonding *bond = to_bond(d);
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read_lock(&bond->lock);
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bond_for_each_slave(bond, slave, i) {
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if (res > (PAGE_SIZE - IFNAMSIZ)) {
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/* not enough space for another interface name */
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if ((PAGE_SIZE - res) > 10)
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res = PAGE_SIZE - 10;
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res += sprintf(buf + res, "++more++ ");
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break;
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}
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res += sprintf(buf + res, "%s ", slave->dev->name);
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}
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read_unlock(&bond->lock);
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if (res)
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buf[res-1] = '\n'; /* eat the leftover space */
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return res;
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}
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/*
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* Set the slaves in the current bond. The bond interface must be
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* up for this to succeed.
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* This function is largely the same flow as bonding_update_bonds().
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*/
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static ssize_t bonding_store_slaves(struct device *d,
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struct device_attribute *attr,
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const char *buffer, size_t count)
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{
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char command[IFNAMSIZ + 1] = { 0, };
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char *ifname;
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int i, res, found, ret = count;
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u32 original_mtu;
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struct slave *slave;
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struct net_device *dev = NULL;
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struct bonding *bond = to_bond(d);
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/* Quick sanity check -- is the bond interface up? */
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if (!(bond->dev->flags & IFF_UP)) {
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printk(KERN_WARNING DRV_NAME
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": %s: doing slave updates when interface is down.\n",
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bond->dev->name);
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}
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/* Note: We can't hold bond->lock here, as bond_create grabs it. */
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rtnl_lock();
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down_write(&(bonding_rwsem));
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sscanf(buffer, "%16s", command); /* IFNAMSIZ*/
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ifname = command + 1;
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if ((strlen(command) <= 1) ||
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!dev_valid_name(ifname))
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goto err_no_cmd;
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if (command[0] == '+') {
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/* Got a slave name in ifname. Is it already in the list? */
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found = 0;
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read_lock(&bond->lock);
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bond_for_each_slave(bond, slave, i)
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if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) {
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printk(KERN_ERR DRV_NAME
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": %s: Interface %s is already enslaved!\n",
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bond->dev->name, ifname);
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ret = -EPERM;
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read_unlock(&bond->lock);
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goto out;
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}
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read_unlock(&bond->lock);
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printk(KERN_INFO DRV_NAME ": %s: Adding slave %s.\n",
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bond->dev->name, ifname);
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dev = dev_get_by_name(&init_net, ifname);
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if (!dev) {
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printk(KERN_INFO DRV_NAME
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": %s: Interface %s does not exist!\n",
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bond->dev->name, ifname);
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ret = -EPERM;
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goto out;
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}
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else
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dev_put(dev);
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if (dev->flags & IFF_UP) {
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printk(KERN_ERR DRV_NAME
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": %s: Error: Unable to enslave %s "
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"because it is already up.\n",
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bond->dev->name, dev->name);
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ret = -EPERM;
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goto out;
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}
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/* If this is the first slave, then we need to set
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the master's hardware address to be the same as the
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slave's. */
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if (!(*((u32 *) & (bond->dev->dev_addr[0])))) {
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memcpy(bond->dev->dev_addr, dev->dev_addr,
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dev->addr_len);
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}
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/* Set the slave's MTU to match the bond */
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original_mtu = dev->mtu;
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if (dev->mtu != bond->dev->mtu) {
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if (dev->change_mtu) {
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res = dev->change_mtu(dev,
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bond->dev->mtu);
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if (res) {
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ret = res;
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goto out;
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}
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} else {
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dev->mtu = bond->dev->mtu;
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}
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}
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res = bond_enslave(bond->dev, dev);
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bond_for_each_slave(bond, slave, i)
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if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0)
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slave->original_mtu = original_mtu;
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if (res) {
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ret = res;
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}
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goto out;
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}
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if (command[0] == '-') {
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dev = NULL;
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original_mtu = 0;
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bond_for_each_slave(bond, slave, i)
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if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) {
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dev = slave->dev;
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original_mtu = slave->original_mtu;
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break;
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}
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if (dev) {
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printk(KERN_INFO DRV_NAME ": %s: Removing slave %s\n",
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bond->dev->name, dev->name);
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if (bond->setup_by_slave)
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res = bond_release_and_destroy(bond->dev, dev);
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else
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res = bond_release(bond->dev, dev);
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if (res) {
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ret = res;
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goto out;
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}
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/* set the slave MTU to the default */
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if (dev->change_mtu) {
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dev->change_mtu(dev, original_mtu);
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} else {
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dev->mtu = original_mtu;
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}
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}
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else {
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printk(KERN_ERR DRV_NAME ": unable to remove non-existent slave %s for bond %s.\n",
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ifname, bond->dev->name);
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ret = -ENODEV;
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}
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goto out;
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}
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err_no_cmd:
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printk(KERN_ERR DRV_NAME ": no command found in slaves file for bond %s. Use +ifname or -ifname.\n", bond->dev->name);
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ret = -EPERM;
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out:
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up_write(&(bonding_rwsem));
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rtnl_unlock();
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return ret;
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}
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static DEVICE_ATTR(slaves, S_IRUGO | S_IWUSR, bonding_show_slaves, bonding_store_slaves);
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/*
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* Show and set the bonding mode. The bond interface must be down to
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* change the mode.
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*/
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static ssize_t bonding_show_mode(struct device *d,
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struct device_attribute *attr, char *buf)
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{
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struct bonding *bond = to_bond(d);
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return sprintf(buf, "%s %d\n",
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bond_mode_tbl[bond->params.mode].modename,
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bond->params.mode);
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}
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static ssize_t bonding_store_mode(struct device *d,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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int new_value, ret = count;
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struct bonding *bond = to_bond(d);
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if (bond->dev->flags & IFF_UP) {
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printk(KERN_ERR DRV_NAME
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": unable to update mode of %s because interface is up.\n",
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bond->dev->name);
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ret = -EPERM;
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goto out;
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}
|
|
|
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new_value = bond_parse_parm(buf, bond_mode_tbl);
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if (new_value < 0) {
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printk(KERN_ERR DRV_NAME
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": %s: Ignoring invalid mode value %.*s.\n",
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bond->dev->name,
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(int)strlen(buf) - 1, buf);
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ret = -EINVAL;
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goto out;
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} else {
|
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if (bond->params.mode == BOND_MODE_8023AD)
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bond_unset_master_3ad_flags(bond);
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|
|
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if (bond->params.mode == BOND_MODE_ALB)
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bond_unset_master_alb_flags(bond);
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bond->params.mode = new_value;
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bond_set_mode_ops(bond, bond->params.mode);
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printk(KERN_INFO DRV_NAME ": %s: setting mode to %s (%d).\n",
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bond->dev->name, bond_mode_tbl[new_value].modename, new_value);
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}
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out:
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return ret;
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}
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static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR, bonding_show_mode, bonding_store_mode);
|
|
|
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/*
|
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* Show and set the bonding transmit hash method. The bond interface must be down to
|
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* change the xmit hash policy.
|
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*/
|
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static ssize_t bonding_show_xmit_hash(struct device *d,
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struct device_attribute *attr,
|
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char *buf)
|
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{
|
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struct bonding *bond = to_bond(d);
|
|
|
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return sprintf(buf, "%s %d\n",
|
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xmit_hashtype_tbl[bond->params.xmit_policy].modename,
|
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bond->params.xmit_policy);
|
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}
|
|
|
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static ssize_t bonding_store_xmit_hash(struct device *d,
|
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struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
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int new_value, ret = count;
|
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struct bonding *bond = to_bond(d);
|
|
|
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if (bond->dev->flags & IFF_UP) {
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printk(KERN_ERR DRV_NAME
|
|
"%s: Interface is up. Unable to update xmit policy.\n",
|
|
bond->dev->name);
|
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ret = -EPERM;
|
|
goto out;
|
|
}
|
|
|
|
new_value = bond_parse_parm(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,
|
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(int)strlen(buf) - 1, buf);
|
|
ret = -EINVAL;
|
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goto out;
|
|
} else {
|
|
bond->params.xmit_policy = new_value;
|
|
bond_set_mode_ops(bond, bond->params.mode);
|
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printk(KERN_INFO DRV_NAME ": %s: setting xmit hash policy to %s (%d).\n",
|
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bond->dev->name, xmit_hashtype_tbl[new_value].modename, new_value);
|
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}
|
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out:
|
|
return ret;
|
|
}
|
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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,
|
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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);
|
|
}
|
|
|
|
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(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 store fail_over_mac. User only allowed to change the
|
|
* value when there are no slaves.
|
|
*/
|
|
static ssize_t bonding_show_fail_over_mac(struct device *d, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct bonding *bond = to_bond(d);
|
|
|
|
return sprintf(buf, "%d\n", bond->params.fail_over_mac) + 1;
|
|
}
|
|
|
|
static ssize_t bonding_store_fail_over_mac(struct device *d, struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
int new_value;
|
|
int ret = count;
|
|
struct bonding *bond = to_bond(d);
|
|
|
|
if (bond->slave_cnt != 0) {
|
|
printk(KERN_ERR DRV_NAME
|
|
": %s: Can't alter fail_over_mac with slaves in bond.\n",
|
|
bond->dev->name);
|
|
ret = -EPERM;
|
|
goto out;
|
|
}
|
|
|
|
if (sscanf(buf, "%d", &new_value) != 1) {
|
|
printk(KERN_ERR DRV_NAME
|
|
": %s: no fail_over_mac value specified.\n",
|
|
bond->dev->name);
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if ((new_value == 0) || (new_value == 1)) {
|
|
bond->params.fail_over_mac = new_value;
|
|
printk(KERN_INFO DRV_NAME ": %s: Setting fail_over_mac to %d.\n",
|
|
bond->dev->name, new_value);
|
|
} else {
|
|
printk(KERN_INFO DRV_NAME
|
|
": %s: Ignoring invalid fail_over_mac value %d.\n",
|
|
bond->dev->name, new_value);
|
|
}
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static DEVICE_ATTR(fail_over_mac, S_IRUGO | S_IWUSR, bonding_show_fail_over_mac, bonding_store_fail_over_mac);
|
|
|
|
/*
|
|
* 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);
|
|
}
|
|
|
|
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;
|
|
if (delayed_work_pending(&bond->mii_work)) {
|
|
cancel_delayed_work(&bond->mii_work);
|
|
flush_workqueue(bond->wq);
|
|
}
|
|
}
|
|
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 (!delayed_work_pending(&bond->arp_work)) {
|
|
if (bond->params.mode == BOND_MODE_ACTIVEBACKUP)
|
|
INIT_DELAYED_WORK(&bond->arp_work,
|
|
bond_activebackup_arp_mon);
|
|
else
|
|
INIT_DELAYED_WORK(&bond->arp_work,
|
|
bond_loadbalance_arp_mon);
|
|
|
|
queue_delayed_work(bond->wq, &bond->arp_work, 0);
|
|
}
|
|
}
|
|
|
|
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)
|
|
buf[res-1] = '\n'; /* eat the leftover space */
|
|
return res;
|
|
}
|
|
|
|
static ssize_t bonding_store_arp_targets(struct device *d,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
__be32 newtarget;
|
|
int i = 0, done = 0, ret = count;
|
|
struct bonding *bond = to_bond(d);
|
|
__be32 *targets;
|
|
|
|
targets = bond->params.arp_targets;
|
|
newtarget = in_aton(buf + 1);
|
|
/* look for adds */
|
|
if (buf[0] == '+') {
|
|
if ((newtarget == 0) || (newtarget == htonl(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 == htonl(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);
|
|
}
|
|
|
|
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);
|
|
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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(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 number of grat ARP to send after a failover event.
|
|
*/
|
|
static ssize_t bonding_show_n_grat_arp(struct device *d,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct bonding *bond = to_bond(d);
|
|
|
|
return sprintf(buf, "%d\n", bond->params.num_grat_arp);
|
|
}
|
|
|
|
static ssize_t bonding_store_n_grat_arp(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 num_grat_arp value specified.\n",
|
|
bond->dev->name);
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
if (new_value < 0 || new_value > 255) {
|
|
printk(KERN_ERR DRV_NAME
|
|
": %s: Invalid num_grat_arp value %d not in range 0-255; rejected.\n",
|
|
bond->dev->name, new_value);
|
|
ret = -EINVAL;
|
|
goto out;
|
|
} else {
|
|
bond->params.num_grat_arp = new_value;
|
|
}
|
|
out:
|
|
return ret;
|
|
}
|
|
static DEVICE_ATTR(num_grat_arp, S_IRUGO | S_IWUSR, bonding_show_n_grat_arp, bonding_store_n_grat_arp);
|
|
/*
|
|
* 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);
|
|
}
|
|
|
|
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;
|
|
}
|
|
if (delayed_work_pending(&bond->arp_work)) {
|
|
cancel_delayed_work(&bond->arp_work);
|
|
flush_workqueue(bond->wq);
|
|
}
|
|
}
|
|
|
|
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 (!delayed_work_pending(&bond->mii_work)) {
|
|
INIT_DELAYED_WORK(&bond->mii_work,
|
|
bond_mii_monitor);
|
|
queue_delayed_work(bond->wq,
|
|
&bond->mii_work, 0);
|
|
}
|
|
}
|
|
}
|
|
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);
|
|
|
|
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);
|
|
|
|
rtnl_lock();
|
|
read_lock(&bond->lock);
|
|
write_lock_bh(&bond->curr_slave_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->curr_slave_lock);
|
|
read_unlock(&bond->lock);
|
|
rtnl_unlock();
|
|
|
|
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);
|
|
}
|
|
|
|
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 = 0;
|
|
|
|
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);
|
|
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);
|
|
|
|
rtnl_lock();
|
|
read_lock(&bond->lock);
|
|
write_lock_bh(&bond->curr_slave_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->curr_slave_lock);
|
|
read_unlock(&bond->lock);
|
|
rtnl_unlock();
|
|
|
|
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");
|
|
}
|
|
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);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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));
|
|
}
|
|
}
|
|
|
|
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_fail_over_mac.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_num_grat_arp.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;
|
|
|
|
/* 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) {
|
|
/* Is someone being kinky and naming a device bonding_master? */
|
|
if (__dev_get_by_name(&init_net,
|
|
class_attr_bonding_masters.attr.name))
|
|
printk(KERN_ERR
|
|
"network device named %s already exists in sysfs",
|
|
class_attr_bonding_masters.attr.name);
|
|
else {
|
|
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);
|
|
}
|
|
|