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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /drivers/net/bonding/bond_sysfs.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'drivers/net/bonding/bond_sysfs.c')
-rw-r--r--drivers/net/bonding/bond_sysfs.c1727
1 files changed, 1727 insertions, 0 deletions
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
new file mode 100644
index 00000000..aef42f04
--- /dev/null
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -0,0 +1,1727 @@
+/*
+ * 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.
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/sched.h>
+#include <linux/fs.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/netdevice.h>
+#include <linux/inetdevice.h>
+#include <linux/in.h>
+#include <linux/sysfs.h>
+#include <linux/ctype.h>
+#include <linux/inet.h>
+#include <linux/rtnetlink.h>
+#include <linux/etherdevice.h>
+#include <net/net_namespace.h>
+#include <net/netns/generic.h>
+#include <linux/nsproxy.h>
+
+#include "bonding.h"
+
+#define to_dev(obj) container_of(obj, struct device, kobj)
+#define to_bond(cd) ((struct bonding *)(netdev_priv(to_net_dev(cd))))
+
+/*
+ * "show" function for the bond_masters attribute.
+ * The class parameter is ignored.
+ */
+static ssize_t bonding_show_bonds(struct class *cls,
+ struct class_attribute *attr,
+ char *buf)
+{
+ struct bond_net *bn =
+ container_of(attr, struct bond_net, class_attr_bonding_masters);
+ int res = 0;
+ struct bonding *bond;
+
+ rtnl_lock();
+
+ list_for_each_entry(bond, &bn->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(buf + res, "++more++ ");
+ break;
+ }
+ res += sprintf(buf + res, "%s ", bond->dev->name);
+ }
+ if (res)
+ buf[res-1] = '\n'; /* eat the leftover space */
+
+ rtnl_unlock();
+ return res;
+}
+
+static struct net_device *bond_get_by_name(struct bond_net *bn, const char *ifname)
+{
+ struct bonding *bond;
+
+ list_for_each_entry(bond, &bn->dev_list, bond_list) {
+ if (strncmp(bond->dev->name, ifname, IFNAMSIZ) == 0)
+ return bond->dev;
+ }
+ return NULL;
+}
+
+/*
+ * "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,
+ struct class_attribute *attr,
+ const char *buffer, size_t count)
+{
+ struct bond_net *bn =
+ container_of(attr, struct bond_net, class_attr_bonding_masters);
+ char command[IFNAMSIZ + 1] = {0, };
+ char *ifname;
+ int rv, res = count;
+
+ sscanf(buffer, "%16s", command); /* IFNAMSIZ*/
+ ifname = command + 1;
+ if ((strlen(command) <= 1) ||
+ !dev_valid_name(ifname))
+ goto err_no_cmd;
+
+ if (command[0] == '+') {
+ pr_info("%s is being created...\n", ifname);
+ rv = bond_create(bn->net, ifname);
+ if (rv) {
+ if (rv == -EEXIST)
+ pr_info("%s already exists.\n", ifname);
+ else
+ pr_info("%s creation failed.\n", ifname);
+ res = rv;
+ }
+ } else if (command[0] == '-') {
+ struct net_device *bond_dev;
+
+ rtnl_lock();
+ bond_dev = bond_get_by_name(bn, ifname);
+ if (bond_dev) {
+ pr_info("%s is being deleted...\n", ifname);
+ unregister_netdevice(bond_dev);
+ } else {
+ pr_err("unable to delete non-existent %s\n", ifname);
+ res = -ENODEV;
+ }
+ rtnl_unlock();
+ } else
+ goto err_no_cmd;
+
+ /* Always return either count or an error. If you return 0, you'll
+ * get called forever, which is bad.
+ */
+ return res;
+
+err_no_cmd:
+ pr_err("no command found in bonding_masters. Use +ifname or -ifname.\n");
+ return -EPERM;
+}
+
+static const void *bonding_namespace(struct class *cls,
+ const struct class_attribute *attr)
+{
+ const struct bond_net *bn =
+ container_of(attr, struct bond_net, class_attr_bonding_masters);
+ return bn->net;
+}
+
+/* class attribute for bond_masters file. This ends up in /sys/class/net */
+static const struct class_attribute class_attr_bonding_masters = {
+ .attr = {
+ .name = "bonding_masters",
+ .mode = S_IWUSR | S_IRUGO,
+ },
+ .show = bonding_show_bonds,
+ .store = bonding_store_bonds,
+ .namespace = bonding_namespace,
+};
+
+int bond_create_slave_symlinks(struct net_device *master,
+ struct net_device *slave)
+{
+ char linkname[IFNAMSIZ+7];
+ int ret = 0;
+
+ /* first, create a link from the slave back to the master */
+ ret = sysfs_create_link(&(slave->dev.kobj), &(master->dev.kobj),
+ "master");
+ if (ret)
+ return ret;
+ /* next, create a link from the master to the slave */
+ sprintf(linkname, "slave_%s", slave->name);
+ ret = sysfs_create_link(&(master->dev.kobj), &(slave->dev.kobj),
+ linkname);
+ return ret;
+
+}
+
+void bond_destroy_slave_symlinks(struct net_device *master,
+ struct net_device *slave)
+{
+ char linkname[IFNAMSIZ+7];
+
+ sysfs_remove_link(&(slave->dev.kobj), "master");
+ sprintf(linkname, "slave_%s", slave->name);
+ sysfs_remove_link(&(master->dev.kobj), linkname);
+}
+
+
+/*
+ * Show the slaves in the current bond.
+ */
+static ssize_t bonding_show_slaves(struct device *d,
+ struct device_attribute *attr, char *buf)
+{
+ struct slave *slave;
+ int i, res = 0;
+ struct bonding *bond = to_bond(d);
+
+ read_lock(&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(&bond->lock);
+ if (res)
+ buf[res-1] = '\n'; /* eat the leftover space */
+ return res;
+}
+
+/*
+ * Set the slaves in the current bond. The bond interface must be
+ * up for this to succeed.
+ * This is supposed to be only thin wrapper for bond_enslave and bond_release.
+ * All hard work should be done there.
+ */
+static ssize_t bonding_store_slaves(struct device *d,
+ struct device_attribute *attr,
+ const char *buffer, size_t count)
+{
+ char command[IFNAMSIZ + 1] = { 0, };
+ char *ifname;
+ int res, ret = count;
+ struct net_device *dev;
+ struct bonding *bond = to_bond(d);
+
+ if (!rtnl_trylock())
+ return restart_syscall();
+
+ sscanf(buffer, "%16s", command); /* IFNAMSIZ*/
+ ifname = command + 1;
+ if ((strlen(command) <= 1) ||
+ !dev_valid_name(ifname))
+ goto err_no_cmd;
+
+ dev = __dev_get_by_name(dev_net(bond->dev), ifname);
+ if (!dev) {
+ pr_info("%s: Interface %s does not exist!\n",
+ bond->dev->name, ifname);
+ ret = -ENODEV;
+ goto out;
+ }
+
+ switch (command[0]) {
+ case '+':
+ pr_info("%s: Adding slave %s.\n", bond->dev->name, dev->name);
+ res = bond_enslave(bond->dev, dev);
+ break;
+
+ case '-':
+ pr_info("%s: Removing slave %s.\n", bond->dev->name, dev->name);
+ res = bond_release(bond->dev, dev);
+ break;
+
+ default:
+ goto err_no_cmd;
+ }
+
+ if (res)
+ ret = res;
+ goto out;
+
+err_no_cmd:
+ pr_err("no command found in slaves file for bond %s. Use +ifname or -ifname.\n",
+ bond->dev->name);
+ ret = -EPERM;
+
+out:
+ rtnl_unlock();
+ return ret;
+}
+
+static DEVICE_ATTR(slaves, S_IRUGO | S_IWUSR, bonding_show_slaves,
+ bonding_store_slaves);
+
+/*
+ * Show and set the bonding mode. The bond interface must be down to
+ * change the mode.
+ */
+static ssize_t bonding_show_mode(struct device *d,
+ struct device_attribute *attr, char *buf)
+{
+ struct bonding *bond = to_bond(d);
+
+ return sprintf(buf, "%s %d\n",
+ bond_mode_tbl[bond->params.mode].modename,
+ bond->params.mode);
+}
+
+static ssize_t bonding_store_mode(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int new_value, ret = count;
+ struct bonding *bond = to_bond(d);
+
+ if (bond->dev->flags & IFF_UP) {
+ pr_err("unable to update mode of %s because interface is up.\n",
+ bond->dev->name);
+ ret = -EPERM;
+ goto out;
+ }
+
+ if (bond->slave_cnt > 0) {
+ pr_err("unable to update mode of %s because it has slaves.\n",
+ bond->dev->name);
+ ret = -EPERM;
+ goto out;
+ }
+
+ new_value = bond_parse_parm(buf, bond_mode_tbl);
+ if (new_value < 0) {
+ pr_err("%s: Ignoring invalid mode value %.*s.\n",
+ bond->dev->name, (int)strlen(buf) - 1, buf);
+ ret = -EINVAL;
+ goto out;
+ }
+ if ((new_value == BOND_MODE_ALB ||
+ new_value == BOND_MODE_TLB) &&
+ bond->params.arp_interval) {
+ pr_err("%s: %s mode is incompatible with arp monitoring.\n",
+ bond->dev->name, bond_mode_tbl[new_value].modename);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ bond->params.mode = new_value;
+ bond_set_mode_ops(bond, bond->params.mode);
+ pr_info("%s: setting mode to %s (%d).\n",
+ bond->dev->name, bond_mode_tbl[new_value].modename,
+ new_value);
+out:
+ return ret;
+}
+static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR,
+ bonding_show_mode, bonding_store_mode);
+
+/*
+ * Show and set the bonding transmit hash method.
+ * The bond interface must be down to change the xmit hash policy.
+ */
+static ssize_t bonding_show_xmit_hash(struct device *d,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bonding *bond = to_bond(d);
+
+ return sprintf(buf, "%s %d\n",
+ xmit_hashtype_tbl[bond->params.xmit_policy].modename,
+ bond->params.xmit_policy);
+}
+
+static ssize_t bonding_store_xmit_hash(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int new_value, ret = count;
+ struct bonding *bond = to_bond(d);
+
+ if (bond->dev->flags & IFF_UP) {
+ pr_err("%s: Interface is up. Unable to update xmit policy.\n",
+ bond->dev->name);
+ ret = -EPERM;
+ goto out;
+ }
+
+ new_value = bond_parse_parm(buf, xmit_hashtype_tbl);
+ if (new_value < 0) {
+ pr_err("%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);
+ pr_info("%s: setting xmit hash policy to %s (%d).\n",
+ bond->dev->name,
+ xmit_hashtype_tbl[new_value].modename, new_value);
+ }
+out:
+ return ret;
+}
+static DEVICE_ATTR(xmit_hash_policy, S_IRUGO | S_IWUSR,
+ bonding_show_xmit_hash, bonding_store_xmit_hash);
+
+/*
+ * Show and set arp_validate.
+ */
+static ssize_t bonding_show_arp_validate(struct device *d,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bonding *bond = to_bond(d);
+
+ return sprintf(buf, "%s %d\n",
+ arp_validate_tbl[bond->params.arp_validate].modename,
+ bond->params.arp_validate);
+}
+
+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) {
+ pr_err("%s: Ignoring invalid arp_validate value %s\n",
+ bond->dev->name, buf);
+ return -EINVAL;
+ }
+ if (new_value && (bond->params.mode != BOND_MODE_ACTIVEBACKUP)) {
+ pr_err("%s: arp_validate only supported in active-backup mode.\n",
+ bond->dev->name);
+ return -EINVAL;
+ }
+ pr_info("%s: setting arp_validate to %s (%d).\n",
+ bond->dev->name, arp_validate_tbl[new_value].modename,
+ new_value);
+
+ 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, "%s %d\n",
+ fail_over_mac_tbl[bond->params.fail_over_mac].modename,
+ bond->params.fail_over_mac);
+}
+
+static ssize_t bonding_store_fail_over_mac(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int new_value;
+ struct bonding *bond = to_bond(d);
+
+ if (bond->slave_cnt != 0) {
+ pr_err("%s: Can't alter fail_over_mac with slaves in bond.\n",
+ bond->dev->name);
+ return -EPERM;
+ }
+
+ new_value = bond_parse_parm(buf, fail_over_mac_tbl);
+ if (new_value < 0) {
+ pr_err("%s: Ignoring invalid fail_over_mac value %s.\n",
+ bond->dev->name, buf);
+ return -EINVAL;
+ }
+
+ bond->params.fail_over_mac = new_value;
+ pr_info("%s: Setting fail_over_mac to %s (%d).\n",
+ bond->dev->name, fail_over_mac_tbl[new_value].modename,
+ new_value);
+
+ return count;
+}
+
+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) {
+ pr_err("%s: no arp_interval value specified.\n",
+ bond->dev->name);
+ ret = -EINVAL;
+ goto out;
+ }
+ if (new_value < 0) {
+ pr_err("%s: Invalid arp_interval value %d not in range 1-%d; rejected.\n",
+ bond->dev->name, new_value, INT_MAX);
+ ret = -EINVAL;
+ goto out;
+ }
+ if (bond->params.mode == BOND_MODE_ALB ||
+ bond->params.mode == BOND_MODE_TLB) {
+ pr_info("%s: ARP monitoring cannot be used with ALB/TLB. Only MII monitoring is supported on %s.\n",
+ bond->dev->name, bond->dev->name);
+ ret = -EINVAL;
+ goto out;
+ }
+ pr_info("%s: Setting ARP monitoring interval to %d.\n",
+ bond->dev->name, new_value);
+ bond->params.arp_interval = new_value;
+ if (bond->params.miimon) {
+ pr_info("%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]) {
+ pr_info("%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, "%pI4 ",
+ &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))) {
+ pr_err("%s: invalid ARP target %pI4 specified for addition\n",
+ bond->dev->name, &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) && !done; i++) {
+ if (targets[i] == newtarget) { /* duplicate */
+ pr_err("%s: ARP target %pI4 is already present\n",
+ bond->dev->name, &newtarget);
+ ret = -EINVAL;
+ goto out;
+ }
+ if (targets[i] == 0) {
+ pr_info("%s: adding ARP target %pI4.\n",
+ bond->dev->name, &newtarget);
+ done = 1;
+ targets[i] = newtarget;
+ }
+ }
+ if (!done) {
+ pr_err("%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))) {
+ pr_err("%s: invalid ARP target %pI4 specified for removal\n",
+ bond->dev->name, &newtarget);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ for (i = 0; (i < BOND_MAX_ARP_TARGETS) && !done; i++) {
+ if (targets[i] == newtarget) {
+ int j;
+ pr_info("%s: removing ARP target %pI4.\n",
+ bond->dev->name, &newtarget);
+ for (j = i; (j < (BOND_MAX_ARP_TARGETS-1)) && targets[j+1]; j++)
+ targets[j] = targets[j+1];
+
+ targets[j] = 0;
+ done = 1;
+ }
+ }
+ if (!done) {
+ pr_info("%s: unable to remove nonexistent ARP target %pI4.\n",
+ bond->dev->name, &newtarget);
+ ret = -EINVAL;
+ goto out;
+ }
+ } else {
+ pr_err("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)) {
+ pr_err("%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) {
+ pr_err("%s: no down delay value specified.\n", bond->dev->name);
+ ret = -EINVAL;
+ goto out;
+ }
+ if (new_value < 0) {
+ pr_err("%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) {
+ pr_warning("%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;
+ pr_info("%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)) {
+ pr_err("%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) {
+ pr_err("%s: no up delay value specified.\n",
+ bond->dev->name);
+ ret = -EINVAL;
+ goto out;
+ }
+ if (new_value < 0) {
+ pr_err("%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) {
+ pr_warning("%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;
+ pr_info("%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) {
+ pr_err("%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) {
+ pr_err("%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;
+ bond_3ad_update_lacp_rate(bond);
+ pr_info("%s: Setting LACP rate to %s (%d).\n",
+ bond->dev->name, bond_lacp_tbl[new_value].modename,
+ new_value);
+ } else {
+ pr_err("%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);
+
+static ssize_t bonding_show_min_links(struct device *d,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bonding *bond = to_bond(d);
+
+ return sprintf(buf, "%d\n", bond->params.min_links);
+}
+
+static ssize_t bonding_store_min_links(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct bonding *bond = to_bond(d);
+ int ret;
+ unsigned int new_value;
+
+ ret = kstrtouint(buf, 0, &new_value);
+ if (ret < 0) {
+ pr_err("%s: Ignoring invalid min links value %s.\n",
+ bond->dev->name, buf);
+ return ret;
+ }
+
+ pr_info("%s: Setting min links value to %u\n",
+ bond->dev->name, new_value);
+ bond->params.min_links = new_value;
+ return count;
+}
+static DEVICE_ATTR(min_links, S_IRUGO | S_IWUSR,
+ bonding_show_min_links, bonding_store_min_links);
+
+static ssize_t bonding_show_ad_select(struct device *d,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bonding *bond = to_bond(d);
+
+ return sprintf(buf, "%s %d\n",
+ ad_select_tbl[bond->params.ad_select].modename,
+ bond->params.ad_select);
+}
+
+
+static ssize_t bonding_store_ad_select(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) {
+ pr_err("%s: Unable to update ad_select because interface is up.\n",
+ bond->dev->name);
+ ret = -EPERM;
+ goto out;
+ }
+
+ new_value = bond_parse_parm(buf, ad_select_tbl);
+
+ if (new_value != -1) {
+ bond->params.ad_select = new_value;
+ pr_info("%s: Setting ad_select to %s (%d).\n",
+ bond->dev->name, ad_select_tbl[new_value].modename,
+ new_value);
+ } else {
+ pr_err("%s: Ignoring invalid ad_select value %.*s.\n",
+ bond->dev->name, (int)strlen(buf) - 1, buf);
+ ret = -EINVAL;
+ }
+out:
+ return ret;
+}
+static DEVICE_ATTR(ad_select, S_IRUGO | S_IWUSR,
+ bonding_show_ad_select, bonding_store_ad_select);
+
+/*
+ * Show and set the number of peer notifications to send after a failover event.
+ */
+static ssize_t bonding_show_num_peer_notif(struct device *d,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bonding *bond = to_bond(d);
+ return sprintf(buf, "%d\n", bond->params.num_peer_notif);
+}
+
+static ssize_t bonding_store_num_peer_notif(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct bonding *bond = to_bond(d);
+ int err = kstrtou8(buf, 10, &bond->params.num_peer_notif);
+ return err ? err : count;
+}
+static DEVICE_ATTR(num_grat_arp, S_IRUGO | S_IWUSR,
+ bonding_show_num_peer_notif, bonding_store_num_peer_notif);
+static DEVICE_ATTR(num_unsol_na, S_IRUGO | S_IWUSR,
+ bonding_show_num_peer_notif, bonding_store_num_peer_notif);
+
+/*
+ * 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) {
+ pr_err("%s: no miimon value specified.\n",
+ bond->dev->name);
+ ret = -EINVAL;
+ goto out;
+ }
+ if (new_value < 0) {
+ pr_err("%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 {
+ pr_info("%s: Setting MII monitoring interval to %d.\n",
+ bond->dev->name, new_value);
+ bond->params.miimon = new_value;
+ if (bond->params.updelay)
+ pr_info("%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)
+ pr_info("%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) {
+ pr_info("%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->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);
+ char ifname[IFNAMSIZ];
+
+ if (!rtnl_trylock())
+ return restart_syscall();
+ block_netpoll_tx();
+ read_lock(&bond->lock);
+ write_lock_bh(&bond->curr_slave_lock);
+
+ if (!USES_PRIMARY(bond->params.mode)) {
+ pr_info("%s: Unable to set primary slave; %s is in mode %d\n",
+ bond->dev->name, bond->dev->name, bond->params.mode);
+ goto out;
+ }
+
+ sscanf(buf, "%16s", ifname); /* IFNAMSIZ */
+
+ /* check to see if we are clearing primary */
+ if (!strlen(ifname) || buf[0] == '\n') {
+ pr_info("%s: Setting primary slave to None.\n",
+ bond->dev->name);
+ bond->primary_slave = NULL;
+ bond_select_active_slave(bond);
+ goto out;
+ }
+
+ bond_for_each_slave(bond, slave, i) {
+ if (strncmp(slave->dev->name, ifname, IFNAMSIZ) == 0) {
+ pr_info("%s: Setting %s as primary slave.\n",
+ bond->dev->name, slave->dev->name);
+ bond->primary_slave = slave;
+ strcpy(bond->params.primary, slave->dev->name);
+ bond_select_active_slave(bond);
+ goto out;
+ }
+ }
+
+ pr_info("%s: Unable to set %.*s as primary slave.\n",
+ bond->dev->name, (int)strlen(buf) - 1, buf);
+out:
+ write_unlock_bh(&bond->curr_slave_lock);
+ read_unlock(&bond->lock);
+ unblock_netpoll_tx();
+ rtnl_unlock();
+
+ return count;
+}
+static DEVICE_ATTR(primary, S_IRUGO | S_IWUSR,
+ bonding_show_primary, bonding_store_primary);
+
+/*
+ * Show and set the primary_reselect flag.
+ */
+static ssize_t bonding_show_primary_reselect(struct device *d,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bonding *bond = to_bond(d);
+
+ return sprintf(buf, "%s %d\n",
+ pri_reselect_tbl[bond->params.primary_reselect].modename,
+ bond->params.primary_reselect);
+}
+
+static ssize_t bonding_store_primary_reselect(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 (!rtnl_trylock())
+ return restart_syscall();
+
+ new_value = bond_parse_parm(buf, pri_reselect_tbl);
+ if (new_value < 0) {
+ pr_err("%s: Ignoring invalid primary_reselect value %.*s.\n",
+ bond->dev->name,
+ (int) strlen(buf) - 1, buf);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ bond->params.primary_reselect = new_value;
+ pr_info("%s: setting primary_reselect to %s (%d).\n",
+ bond->dev->name, pri_reselect_tbl[new_value].modename,
+ new_value);
+
+ block_netpoll_tx();
+ read_lock(&bond->lock);
+ write_lock_bh(&bond->curr_slave_lock);
+ bond_select_active_slave(bond);
+ write_unlock_bh(&bond->curr_slave_lock);
+ read_unlock(&bond->lock);
+ unblock_netpoll_tx();
+out:
+ rtnl_unlock();
+ return ret;
+}
+static DEVICE_ATTR(primary_reselect, S_IRUGO | S_IWUSR,
+ bonding_show_primary_reselect,
+ bonding_store_primary_reselect);
+
+/*
+ * 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) {
+ pr_err("%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;
+ pr_info("%s: Setting use_carrier to %d.\n",
+ bond->dev->name, new_value);
+ } else {
+ pr_info("%s: Ignoring invalid use_carrier value %d.\n",
+ bond->dev->name, new_value);
+ }
+out:
+ return ret;
+}
+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);
+ char ifname[IFNAMSIZ];
+
+ if (!rtnl_trylock())
+ return restart_syscall();
+
+ block_netpoll_tx();
+ read_lock(&bond->lock);
+ write_lock_bh(&bond->curr_slave_lock);
+
+ if (!USES_PRIMARY(bond->params.mode)) {
+ pr_info("%s: Unable to change active slave; %s is in mode %d\n",
+ bond->dev->name, bond->dev->name, bond->params.mode);
+ goto out;
+ }
+
+ sscanf(buf, "%16s", ifname); /* IFNAMSIZ */
+
+ /* check to see if we are clearing active */
+ if (!strlen(ifname) || buf[0] == '\n') {
+ pr_info("%s: Clearing current active slave.\n",
+ bond->dev->name);
+ bond->curr_active_slave = NULL;
+ bond_select_active_slave(bond);
+ goto out;
+ }
+
+ bond_for_each_slave(bond, slave, i) {
+ if (strncmp(slave->dev->name, ifname, IFNAMSIZ) == 0) {
+ old_active = bond->curr_active_slave;
+ new_active = slave;
+ if (new_active == old_active) {
+ /* do nothing */
+ pr_info("%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)) {
+ pr_info("%s: Setting %s as active"
+ " slave.\n",
+ bond->dev->name,
+ slave->dev->name);
+ bond_change_active_slave(bond,
+ new_active);
+ }
+ else {
+ pr_info("%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;
+ }
+ }
+ }
+
+ pr_info("%s: Unable to set %.*s as active slave.\n",
+ bond->dev->name, (int)strlen(buf) - 1, buf);
+ out:
+ write_unlock_bh(&bond->curr_slave_lock);
+ read_unlock(&bond->lock);
+ unblock_netpoll_tx();
+
+ 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);
+
+ 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, "%pM\n", ad_info.partner_system);
+ }
+
+ return count;
+}
+static DEVICE_ATTR(ad_partner_mac, S_IRUGO, bonding_show_ad_partner_mac, NULL);
+
+/*
+ * Show the queue_ids of the slaves in the current bond.
+ */
+static ssize_t bonding_show_queue_id(struct device *d,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct slave *slave;
+ int i, res = 0;
+ struct bonding *bond = to_bond(d);
+
+ if (!rtnl_trylock())
+ return restart_syscall();
+
+ read_lock(&bond->lock);
+ bond_for_each_slave(bond, slave, i) {
+ if (res > (PAGE_SIZE - IFNAMSIZ - 6)) {
+ /* not enough space for another interface_name:queue_id pair */
+ if ((PAGE_SIZE - res) > 10)
+ res = PAGE_SIZE - 10;
+ res += sprintf(buf + res, "++more++ ");
+ break;
+ }
+ res += sprintf(buf + res, "%s:%d ",
+ slave->dev->name, slave->queue_id);
+ }
+ read_unlock(&bond->lock);
+ if (res)
+ buf[res-1] = '\n'; /* eat the leftover space */
+ rtnl_unlock();
+ return res;
+}
+
+/*
+ * Set the queue_ids of the slaves in the current bond. The bond
+ * interface must be enslaved for this to work.
+ */
+static ssize_t bonding_store_queue_id(struct device *d,
+ struct device_attribute *attr,
+ const char *buffer, size_t count)
+{
+ struct slave *slave, *update_slave;
+ struct bonding *bond = to_bond(d);
+ u16 qid;
+ int i, ret = count;
+ char *delim;
+ struct net_device *sdev = NULL;
+
+ if (!rtnl_trylock())
+ return restart_syscall();
+
+ /* delim will point to queue id if successful */
+ delim = strchr(buffer, ':');
+ if (!delim)
+ goto err_no_cmd;
+
+ /*
+ * Terminate string that points to device name and bump it
+ * up one, so we can read the queue id there.
+ */
+ *delim = '\0';
+ if (sscanf(++delim, "%hd\n", &qid) != 1)
+ goto err_no_cmd;
+
+ /* Check buffer length, valid ifname and queue id */
+ if (strlen(buffer) > IFNAMSIZ ||
+ !dev_valid_name(buffer) ||
+ qid > bond->params.tx_queues)
+ goto err_no_cmd;
+
+ /* Get the pointer to that interface if it exists */
+ sdev = __dev_get_by_name(dev_net(bond->dev), buffer);
+ if (!sdev)
+ goto err_no_cmd;
+
+ read_lock(&bond->lock);
+
+ /* Search for thes slave and check for duplicate qids */
+ update_slave = NULL;
+ bond_for_each_slave(bond, slave, i) {
+ if (sdev == slave->dev)
+ /*
+ * We don't need to check the matching
+ * slave for dups, since we're overwriting it
+ */
+ update_slave = slave;
+ else if (qid && qid == slave->queue_id) {
+ goto err_no_cmd_unlock;
+ }
+ }
+
+ if (!update_slave)
+ goto err_no_cmd_unlock;
+
+ /* Actually set the qids for the slave */
+ update_slave->queue_id = qid;
+
+ read_unlock(&bond->lock);
+out:
+ rtnl_unlock();
+ return ret;
+
+err_no_cmd_unlock:
+ read_unlock(&bond->lock);
+err_no_cmd:
+ pr_info("invalid input for queue_id set for %s.\n",
+ bond->dev->name);
+ ret = -EPERM;
+ goto out;
+}
+
+static DEVICE_ATTR(queue_id, S_IRUGO | S_IWUSR, bonding_show_queue_id,
+ bonding_store_queue_id);
+
+
+/*
+ * Show and set the all_slaves_active flag.
+ */
+static ssize_t bonding_show_slaves_active(struct device *d,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bonding *bond = to_bond(d);
+
+ return sprintf(buf, "%d\n", bond->params.all_slaves_active);
+}
+
+static ssize_t bonding_store_slaves_active(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int i, new_value, ret = count;
+ struct bonding *bond = to_bond(d);
+ struct slave *slave;
+
+ if (sscanf(buf, "%d", &new_value) != 1) {
+ pr_err("%s: no all_slaves_active value specified.\n",
+ bond->dev->name);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (new_value == bond->params.all_slaves_active)
+ goto out;
+
+ if ((new_value == 0) || (new_value == 1)) {
+ bond->params.all_slaves_active = new_value;
+ } else {
+ pr_info("%s: Ignoring invalid all_slaves_active value %d.\n",
+ bond->dev->name, new_value);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ bond_for_each_slave(bond, slave, i) {
+ if (!bond_is_active_slave(slave)) {
+ if (new_value)
+ slave->inactive = 0;
+ else
+ slave->inactive = 1;
+ }
+ }
+out:
+ return ret;
+}
+static DEVICE_ATTR(all_slaves_active, S_IRUGO | S_IWUSR,
+ bonding_show_slaves_active, bonding_store_slaves_active);
+
+/*
+ * Show and set the number of IGMP membership reports to send on link failure
+ */
+static ssize_t bonding_show_resend_igmp(struct device *d,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bonding *bond = to_bond(d);
+
+ return sprintf(buf, "%d\n", bond->params.resend_igmp);
+}
+
+static ssize_t bonding_store_resend_igmp(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) {
+ pr_err("%s: no resend_igmp value specified.\n",
+ bond->dev->name);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (new_value < 0 || new_value > 255) {
+ pr_err("%s: Invalid resend_igmp value %d not in range 0-255; rejected.\n",
+ bond->dev->name, new_value);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ pr_info("%s: Setting resend_igmp to %d.\n",
+ bond->dev->name, new_value);
+ bond->params.resend_igmp = new_value;
+out:
+ return ret;
+}
+
+static DEVICE_ATTR(resend_igmp, S_IRUGO | S_IWUSR,
+ bonding_show_resend_igmp, bonding_store_resend_igmp);
+
+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_ad_select.attr,
+ &dev_attr_xmit_hash_policy.attr,
+ &dev_attr_num_grat_arp.attr,
+ &dev_attr_num_unsol_na.attr,
+ &dev_attr_miimon.attr,
+ &dev_attr_primary.attr,
+ &dev_attr_primary_reselect.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,
+ &dev_attr_queue_id.attr,
+ &dev_attr_all_slaves_active.attr,
+ &dev_attr_resend_igmp.attr,
+ &dev_attr_min_links.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(struct bond_net *bn)
+{
+ int ret;
+
+ bn->class_attr_bonding_masters = class_attr_bonding_masters;
+ sysfs_attr_init(&bn->class_attr_bonding_masters.attr);
+
+ ret = netdev_class_create_file(&bn->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(bn->net,
+ class_attr_bonding_masters.attr.name))
+ pr_err("network device named %s already exists in sysfs",
+ class_attr_bonding_masters.attr.name);
+ ret = 0;
+ }
+
+ return ret;
+
+}
+
+/*
+ * Remove /sys/class/net/bonding_masters.
+ */
+void bond_destroy_sysfs(struct bond_net *bn)
+{
+ netdev_class_remove_file(&bn->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.
+ */
+void bond_prepare_sysfs_group(struct bonding *bond)
+{
+ bond->dev->sysfs_groups[0] = &bonding_group;
+}
+