| /* |
| * 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, "%15s", 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; |
| } |
| } |
| |
| strncpy(bond->params.primary, ifname, IFNAMSIZ); |
| bond->params.primary[IFNAMSIZ - 1] = 0; |
| |
| pr_info("%s: Recording %s as primary, " |
| "but it has not been enslaved to %s yet.\n", |
| bond->dev->name, ifname, bond->dev->name); |
| 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->dev->real_num_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; |
| } |
| |