--- /dev/null
+
+/*
+ * 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/config.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.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/string.h>
+#include <linux/ctype.h>
+#include <linux/inet.h>
+#include <linux/rtnetlink.h>
+
+/* #define BONDING_DEBUG 1 */
+#include "bonding.h"
+#define to_class_dev(obj) container_of(obj,struct class_device,kobj)
+#define to_net_dev(class) container_of(class, struct net_device, class_dev)
+#define to_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[];
+
+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->class_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);
+ unregister_netdevice(bond->dev);
+ bond_deinit(bond->dev);
+ bond_destroy_sysfs_entry(bond);
+ 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->class_dev.kobj), &(master->class_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->class_dev.kobj), &(slave->class_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->class_dev.kobj), "master");
+ sprintf(linkname,"slave_%s",slave->name);
+ sysfs_remove_link(&(master->class_dev.kobj), linkname);
+}
+
+
+/*
+ * Show the slaves in the current bond.
+ */
+static ssize_t bonding_show_slaves(struct class_device *cd, char *buf)
+{
+ struct slave *slave;
+ int i, res = 0;
+ struct bonding *bond = to_bond(cd);
+
+ 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 class_device *cd, 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(cd);
+
+ /* 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(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 CLASS_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 class_device *cd, char *buf)
+{
+ struct bonding *bond = to_bond(cd);
+
+ return sprintf(buf, "%s %d\n",
+ bond_mode_tbl[bond->params.mode].modename,
+ bond->params.mode) + 1;
+}
+
+static ssize_t bonding_store_mode(struct class_device *cd, const char *buf, size_t count)
+{
+ int new_value, ret = count;
+ struct bonding *bond = to_bond(cd);
+
+ 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 CLASS_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 class_device *cd, char *buf)
+{
+ int count;
+ struct bonding *bond = to_bond(cd);
+
+ 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 class_device *cd, const char *buf, size_t count)
+{
+ int new_value, ret = count;
+ struct bonding *bond = to_bond(cd);
+
+ 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 CLASS_DEVICE_ATTR(xmit_hash_policy, S_IRUGO | S_IWUSR, bonding_show_xmit_hash, bonding_store_xmit_hash);
+
+/*
+ * 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 class_device *cd, char *buf)
+{
+ struct bonding *bond = to_bond(cd);
+
+ return sprintf(buf, "%d\n", bond->params.arp_interval) + 1;
+}
+
+static ssize_t bonding_store_arp_interval(struct class_device *cd, const char *buf, size_t count)
+{
+ int new_value, ret = count;
+ struct bonding *bond = to_bond(cd);
+
+ 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 CLASS_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 class_device *cd, char *buf)
+{
+ int i, res = 0;
+ struct bonding *bond = to_bond(cd);
+
+ 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 class_device *cd, const char *buf, size_t count)
+{
+ u32 newtarget;
+ int i = 0, done = 0, ret = count;
+ struct bonding *bond = to_bond(cd);
+ 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 CLASS_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 class_device *cd, char *buf)
+{
+ struct bonding *bond = to_bond(cd);
+
+ return sprintf(buf, "%d\n", bond->params.downdelay * bond->params.miimon) + 1;
+}
+
+static ssize_t bonding_store_downdelay(struct class_device *cd, const char *buf, size_t count)
+{
+ int new_value, ret = count;
+ struct bonding *bond = to_bond(cd);
+
+ 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 CLASS_DEVICE_ATTR(downdelay, S_IRUGO | S_IWUSR , bonding_show_downdelay, bonding_store_downdelay);
+
+static ssize_t bonding_show_updelay(struct class_device *cd, char *buf)
+{
+ struct bonding *bond = to_bond(cd);
+
+ return sprintf(buf, "%d\n", bond->params.updelay * bond->params.miimon) + 1;
+
+}
+
+static ssize_t bonding_store_updelay(struct class_device *cd, const char *buf, size_t count)
+{
+ int new_value, ret = count;
+ struct bonding *bond = to_bond(cd);
+
+ 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 CLASS_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 class_device *cd, char *buf)
+{
+ struct bonding *bond = to_bond(cd);
+
+ 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 class_device *cd, const char *buf, size_t count)
+{
+ int new_value, ret = count;
+ struct bonding *bond = to_bond(cd);
+
+ 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 CLASS_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 class_device *cd, char *buf)
+{
+ struct bonding *bond = to_bond(cd);
+
+ return sprintf(buf, "%d\n", bond->params.miimon) + 1;
+}
+
+static ssize_t bonding_store_miimon(struct class_device *cd, const char *buf, size_t count)
+{
+ int new_value, ret = count;
+ struct bonding *bond = to_bond(cd);
+
+ 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;
+ /* 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 CLASS_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 class_device *cd, char *buf)
+{
+ int count = 0;
+ struct bonding *bond = to_bond(cd);
+
+ 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 class_device *cd, const char *buf, size_t count)
+{
+ int i;
+ struct slave *slave;
+ struct bonding *bond = to_bond(cd);
+
+ 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 CLASS_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 class_device *cd, char *buf)
+{
+ struct bonding *bond = to_bond(cd);
+
+ return sprintf(buf, "%d\n", bond->params.use_carrier) + 1;
+}
+
+static ssize_t bonding_store_carrier(struct class_device *cd, const char *buf, size_t count)
+{
+ int new_value, ret = count;
+ struct bonding *bond = to_bond(cd);
+
+
+ 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 CLASS_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 class_device *cd, char *buf)
+{
+ struct slave *curr;
+ struct bonding *bond = to_bond(cd);
+ 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 class_device *cd, 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(cd);
+
+ 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 && (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 CLASS_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 class_device *cd, char *buf)
+{
+ struct slave *curr;
+ struct bonding *bond = to_bond(cd);
+
+ 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 CLASS_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 class_device *cd, char *buf)
+{
+ int count = 0;
+ struct bonding *bond = to_bond(cd);
+
+ 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 CLASS_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 class_device *cd, char *buf)
+{
+ int count = 0;
+ struct bonding *bond = to_bond(cd);
+
+ 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 CLASS_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 class_device *cd, char *buf)
+{
+ int count = 0;
+ struct bonding *bond = to_bond(cd);
+
+ 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 CLASS_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 class_device *cd, char *buf)
+{
+ int count = 0;
+ struct bonding *bond = to_bond(cd);
+
+ 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 CLASS_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 class_device *cd, char *buf)
+{
+ int count = 0;
+ struct bonding *bond = to_bond(cd);
+
+ 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,"%02x:%02x:%02x:%02x:%02x:%02x\n",
+ ad_info.partner_system[0],
+ ad_info.partner_system[1],
+ ad_info.partner_system[2],
+ ad_info.partner_system[3],
+ ad_info.partner_system[4],
+ ad_info.partner_system[5]) + 1;
+ }
+ }
+ else
+ count = sprintf(buf, "\n") + 1;
+
+ return count;
+}
+static CLASS_DEVICE_ATTR(ad_partner_mac, S_IRUGO, bonding_show_ad_partner_mac, NULL);
+
+
+
+static struct attribute *per_bond_attrs[] = {
+ &class_device_attr_slaves.attr,
+ &class_device_attr_mode.attr,
+ &class_device_attr_arp_interval.attr,
+ &class_device_attr_arp_ip_target.attr,
+ &class_device_attr_downdelay.attr,
+ &class_device_attr_updelay.attr,
+ &class_device_attr_lacp_rate.attr,
+ &class_device_attr_xmit_hash_policy.attr,
+ &class_device_attr_miimon.attr,
+ &class_device_attr_primary.attr,
+ &class_device_attr_use_carrier.attr,
+ &class_device_attr_active_slave.attr,
+ &class_device_attr_mii_status.attr,
+ &class_device_attr_ad_aggregator.attr,
+ &class_device_attr_ad_num_ports.attr,
+ &class_device_attr_ad_actor_key.attr,
+ &class_device_attr_ad_partner_key.attr,
+ &class_device_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->class_dev.class;
+ if (!netdev_class)
+ return -ENODEV;
+
+ ret = class_create_file(netdev_class, &class_attr_bonding_masters);
+
+ 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->class_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->class_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->class_dev.kobj), &bonding_group);
+}
+
git://git.onelab.eu / linux-2.6.git / blobdiff