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linux_dsm_epyc7002/drivers/net/bonding/bond_sysfs.c
Nikolay Aleksandrov 0e2e5b66e9 bonding: convert slaves to use the new option API 
This patch adds the necessary changes so slaves would use
the new bonding option API. Also move the option to its own set function
in bond_options.c and fix some style errors.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-22 15:38:44 -08:00

1164 lines
29 KiB
C
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/*
* 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, see <http://www.gnu.org/licenses/>.
*
* 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;
}
/* 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,
};
/*
* Show the slaves in the current bond.
*/
static ssize_t bonding_show_slaves(struct device *d,
struct device_attribute *attr, char *buf)
{
struct bonding *bond = to_bond(d);
struct list_head *iter;
struct slave *slave;
int res = 0;
if (!rtnl_trylock())
return restart_syscall();
bond_for_each_slave(bond, slave, iter) {
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);
}
rtnl_unlock();
if (res)
buf[res-1] = '\n'; /* eat the leftover space */
return res;
}
/*
* Set the slaves in the current bond.
* 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)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_SLAVES, (char *)buffer);
if (!ret)
ret = count;
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);
struct bond_opt_value *val;
val = bond_opt_get_val(BOND_OPT_MODE, bond->params.mode);
return sprintf(buf, "%s %d\n", val->string, bond->params.mode);
}
static ssize_t bonding_store_mode(struct device *d,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_MODE, (char *)buf);
if (!ret)
ret = count;
return ret;
}
static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR,
bonding_show_mode, bonding_store_mode);
/*
* Show and set the bonding transmit hash method.
*/
static ssize_t bonding_show_xmit_hash(struct device *d,
struct device_attribute *attr,
char *buf)
{
struct bonding *bond = to_bond(d);
struct bond_opt_value *val;
val = bond_opt_get_val(BOND_OPT_XMIT_HASH, bond->params.xmit_policy);
return sprintf(buf, "%s %d\n", val->string, bond->params.xmit_policy);
}
static ssize_t bonding_store_xmit_hash(struct device *d,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_XMIT_HASH, (char *)buf);
if (!ret)
ret = count;
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);
struct bond_opt_value *val;
val = bond_opt_get_val(BOND_OPT_ARP_VALIDATE,
bond->params.arp_validate);
return sprintf(buf, "%s %d\n", val->string, bond->params.arp_validate);
}
static ssize_t bonding_store_arp_validate(struct device *d,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_ARP_VALIDATE, (char *)buf);
if (!ret)
ret = count;
return ret;
}
static DEVICE_ATTR(arp_validate, S_IRUGO | S_IWUSR, bonding_show_arp_validate,
bonding_store_arp_validate);
/*
* Show and set arp_all_targets.
*/
static ssize_t bonding_show_arp_all_targets(struct device *d,
struct device_attribute *attr,
char *buf)
{
struct bonding *bond = to_bond(d);
struct bond_opt_value *val;
val = bond_opt_get_val(BOND_OPT_ARP_ALL_TARGETS,
bond->params.arp_all_targets);
return sprintf(buf, "%s %d\n",
val->string, bond->params.arp_all_targets);
}
static ssize_t bonding_store_arp_all_targets(struct device *d,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_ARP_ALL_TARGETS, (char *)buf);
if (!ret)
ret = count;
return ret;
}
static DEVICE_ATTR(arp_all_targets, S_IRUGO | S_IWUSR,
bonding_show_arp_all_targets, bonding_store_arp_all_targets);
/*
* 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);
struct bond_opt_value *val;
val = bond_opt_get_val(BOND_OPT_FAIL_OVER_MAC,
bond->params.fail_over_mac);
return sprintf(buf, "%s %d\n", val->string, 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)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_FAIL_OVER_MAC, (char *)buf);
if (!ret)
ret = count;
return ret;
}
static DEVICE_ATTR(fail_over_mac, S_IRUGO | S_IWUSR,
bonding_show_fail_over_mac, bonding_store_fail_over_mac);
/*
* Show and set the arp timer interval. There are two tricky bits
* here. First, if ARP monitoring is activated, then we must disable
* MII monitoring. Second, if the ARP timer isn't running, we must
* start it.
*/
static ssize_t bonding_show_arp_interval(struct device *d,
struct device_attribute *attr,
char *buf)
{
struct bonding *bond = to_bond(d);
return sprintf(buf, "%d\n", bond->params.arp_interval);
}
static ssize_t bonding_store_arp_interval(struct device *d,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_ARP_INTERVAL, (char *)buf);
if (!ret)
ret = count;
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)
{
struct bonding *bond = to_bond(d);
int i, res = 0;
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)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_ARP_TARGETS, (char *)buf);
if (!ret)
ret = count;
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)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_DOWNDELAY, (char *)buf);
if (!ret)
ret = count;
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)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_UPDELAY, (char *)buf);
if (!ret)
ret = count;
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);
struct bond_opt_value *val;
val = bond_opt_get_val(BOND_OPT_LACP_RATE, bond->params.lacp_fast);
return sprintf(buf, "%s %d\n", val->string, bond->params.lacp_fast);
}
static ssize_t bonding_store_lacp(struct device *d,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_LACP_RATE, (char *)buf);
if (!ret)
ret = count;
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;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_MINLINKS, (char *)buf);
if (!ret)
ret = count;
return ret;
}
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);
struct bond_opt_value *val;
val = bond_opt_get_val(BOND_OPT_AD_SELECT, bond->params.ad_select);
return sprintf(buf, "%s %d\n", val->string, bond->params.ad_select);
}
static ssize_t bonding_store_ad_select(struct device *d,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_AD_SELECT, (char *)buf);
if (!ret)
ret = count;
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 ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_NUM_PEER_NOTIF, (char *)buf);
if (!ret)
ret = count;
return ret;
}
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)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_MIIMON, (char *)buf);
if (!ret)
ret = count;
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)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_PRIMARY, (char *)buf);
if (!ret)
ret = count;
return ret;
}
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);
struct bond_opt_value *val;
val = bond_opt_get_val(BOND_OPT_PRIMARY_RESELECT,
bond->params.primary_reselect);
return sprintf(buf, "%s %d\n",
val->string, bond->params.primary_reselect);
}
static ssize_t bonding_store_primary_reselect(struct device *d,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_PRIMARY_RESELECT,
(char *)buf);
if (!ret)
ret = count;
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)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_USE_CARRIER, (char *)buf);
if (!ret)
ret = count;
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 bonding *bond = to_bond(d);
struct net_device *slave_dev;
int count = 0;
rcu_read_lock();
slave_dev = bond_option_active_slave_get_rcu(bond);
if (slave_dev)
count = sprintf(buf, "%s\n", slave_dev->name);
rcu_read_unlock();
return count;
}
static ssize_t bonding_store_active_slave(struct device *d,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_ACTIVE_SLAVE, (char *)buf);
if (!ret)
ret = count;
return ret;
}
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 bonding *bond = to_bond(d);
return sprintf(buf, "%s\n", bond->curr_active_slave ? "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 bonding *bond = to_bond(d);
struct list_head *iter;
struct slave *slave;
int res = 0;
if (!rtnl_trylock())
return restart_syscall();
bond_for_each_slave(bond, slave, iter) {
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);
}
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 bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_QUEUE_ID, (char *)buffer);
if (!ret)
ret = count;
return ret;
}
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)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_ALL_SLAVES_ACTIVE,
(char *)buf);
if (!ret)
ret = count;
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)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_RESEND_IGMP, (char *)buf);
if (!ret)
ret = count;
return ret;
}
static DEVICE_ATTR(resend_igmp, S_IRUGO | S_IWUSR,
bonding_show_resend_igmp, bonding_store_resend_igmp);
static ssize_t bonding_show_lp_interval(struct device *d,
struct device_attribute *attr,
char *buf)
{
struct bonding *bond = to_bond(d);
return sprintf(buf, "%d\n", bond->params.lp_interval);
}
static ssize_t bonding_store_lp_interval(struct device *d,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_LP_INTERVAL, (char *)buf);
if (!ret)
ret = count;
return ret;
}
static DEVICE_ATTR(lp_interval, S_IRUGO | S_IWUSR,
bonding_show_lp_interval, bonding_store_lp_interval);
static ssize_t bonding_show_packets_per_slave(struct device *d,
struct device_attribute *attr,
char *buf)
{
struct bonding *bond = to_bond(d);
unsigned int packets_per_slave = bond->params.packets_per_slave;
return sprintf(buf, "%u\n", packets_per_slave);
}
static ssize_t bonding_store_packets_per_slave(struct device *d,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct bonding *bond = to_bond(d);
int ret;
ret = bond_opt_tryset_rtnl(bond, BOND_OPT_PACKETS_PER_SLAVE,
(char *)buf);
if (!ret)
ret = count;
return ret;
}
static DEVICE_ATTR(packets_per_slave, S_IRUGO | S_IWUSR,
bonding_show_packets_per_slave,
bonding_store_packets_per_slave);
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_all_targets.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,
&dev_attr_lp_interval.attr,
&dev_attr_packets_per_slave.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_ns(&bn->class_attr_bonding_masters,
bn->net);
/*
* 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_ns(&bn->class_attr_bonding_masters, bn->net);
}
/*
* 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;
}
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