redonkable/alistair23-linux
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Merge branch 'bonding_nl'

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Scott Feldman says:

====================
bonding: add even more netlink attributes

The following series implements five more bonding netlink attributes:

	num_grat_arp|num_unsol_na
	all_slaves_active
	min_links
	lp_interval
	packets_per_slave

Tested with modified iproute2 to verify attributes can be set at bond creation
time or set later.  Verified sysfs interface to attributes continues to work.

I have one more set after this one for all of the 802.3ad attributes.  Whew.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2013-12-19 18:32:47 -05:00
parent de47c4ab25 c13ab3ff17
commit cb4eae3d52
5 changed files with 225 additions and 61 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

78
drivers/net/bonding/bond_netlink.c
View file

@ -19,6 +19,7 @@
#include <linux/if_ether.h>
#include <net/netlink.h>
#include <net/rtnetlink.h>
#include <linux/reciprocal_div.h>
#include "bonding.h"
static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {
@ -37,6 +38,11 @@ static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {
[IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 },
[IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 },
[IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 },
[IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 },
[IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 },
[IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 },
[IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 },
[IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 },
};
static int bond_validate(struct nlattr *tb[], struct nlattr *data[])
@ -204,6 +210,48 @@ static int bond_changelink(struct net_device *bond_dev,
if (err)
return err;
}
if (data[IFLA_BOND_NUM_PEER_NOTIF]) {
int num_peer_notif =
nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]);
err = bond_option_num_peer_notif_set(bond, num_peer_notif);
if (err)
return err;
}
if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) {
int all_slaves_active =
nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]);
err = bond_option_all_slaves_active_set(bond,
all_slaves_active);
if (err)
return err;
}
if (data[IFLA_BOND_MIN_LINKS]) {
int min_links =
nla_get_u32(data[IFLA_BOND_MIN_LINKS]);
err = bond_option_min_links_set(bond, min_links);
if (err)
return err;
}
if (data[IFLA_BOND_LP_INTERVAL]) {
int lp_interval =
nla_get_u32(data[IFLA_BOND_LP_INTERVAL]);
err = bond_option_lp_interval_set(bond, lp_interval);
if (err)
return err;
}
if (data[IFLA_BOND_PACKETS_PER_SLAVE]) {
int packets_per_slave =
nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]);
err = bond_option_packets_per_slave_set(bond,
packets_per_slave);
if (err)
return err;
}
return 0;
}
@ -237,6 +285,11 @@ static size_t bond_get_size(const struct net_device *bond_dev)
nla_total_size(sizeof(u8)) + /* IFLA_BOND_FAIL_OVER_MAC */
nla_total_size(sizeof(u8)) + /* IFLA_BOND_XMIT_HASH_POLICY */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_RESEND_IGMP */
nla_total_size(sizeof(u8)) + /* IFLA_BOND_NUM_PEER_NOTIF */
nla_total_size(sizeof(u8)) + /* IFLA_BOND_ALL_SLAVES_ACTIVE */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIN_LINKS */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_LP_INTERVAL */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_PACKETS_PER_SLAVE */
0;
}
@ -246,6 +299,7 @@ static int bond_fill_info(struct sk_buff *skb,
struct bonding *bond = netdev_priv(bond_dev);
struct net_device *slave_dev = bond_option_active_slave_get(bond);
struct nlattr *targets;
unsigned int packets_per_slave;
int i, targets_added;
if (nla_put_u8(skb, IFLA_BOND_MODE, bond->params.mode))
@ -317,6 +371,30 @@ static int bond_fill_info(struct sk_buff *skb,
bond->params.resend_igmp))
goto nla_put_failure;
if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF,
bond->params.num_peer_notif))
goto nla_put_failure;
if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE,
bond->params.all_slaves_active))
goto nla_put_failure;
if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS,
bond->params.min_links))
goto nla_put_failure;
if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL,
bond->params.lp_interval))
goto nla_put_failure;
packets_per_slave = bond->params.packets_per_slave;
if (packets_per_slave > 1)
packets_per_slave = reciprocal_value(packets_per_slave);
if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE,
packets_per_slave))
goto nla_put_failure;
return 0;
nla_put_failure:

80
drivers/net/bonding/bond_options.c
View file

@ -16,6 +16,7 @@
#include <linux/netdevice.h>
#include <linux/rwlock.h>
#include <linux/rcupdate.h>
#include <linux/reciprocal_div.h>
#include "bonding.h"
static bool bond_mode_is_valid(int mode)
@ -576,3 +577,82 @@ int bond_option_resend_igmp_set(struct bonding *bond, int resend_igmp)
return 0;
}
int bond_option_num_peer_notif_set(struct bonding *bond, int num_peer_notif)
{
bond->params.num_peer_notif = num_peer_notif;
return 0;
}
int bond_option_all_slaves_active_set(struct bonding *bond,
int all_slaves_active)
{
struct list_head *iter;
struct slave *slave;
if (all_slaves_active == bond->params.all_slaves_active)
return 0;
if ((all_slaves_active == 0) || (all_slaves_active == 1)) {
bond->params.all_slaves_active = all_slaves_active;
} else {
pr_info("%s: Ignoring invalid all_slaves_active value %d.\n",
bond->dev->name, all_slaves_active);
return -EINVAL;
}
bond_for_each_slave(bond, slave, iter) {
if (!bond_is_active_slave(slave)) {
if (all_slaves_active)
slave->inactive = 0;
else
slave->inactive = 1;
}
}
return 0;
}
int bond_option_min_links_set(struct bonding *bond, int min_links)
{
pr_info("%s: Setting min links value to %u\n",
bond->dev->name, min_links);
bond->params.min_links = min_links;
return 0;
}
int bond_option_lp_interval_set(struct bonding *bond, int lp_interval)
{
if (lp_interval <= 0) {
pr_err("%s: lp_interval must be between 1 and %d\n",
bond->dev->name, INT_MAX);
return -EINVAL;
}
bond->params.lp_interval = lp_interval;
return 0;
}
int bond_option_packets_per_slave_set(struct bonding *bond,
int packets_per_slave)
{
if (packets_per_slave < 0 || packets_per_slave > USHRT_MAX) {
pr_err("%s: packets_per_slave must be between 0 and %u\n",
bond->dev->name, USHRT_MAX);
return -EINVAL;
}
if (bond->params.mode != BOND_MODE_ROUNDROBIN)
pr_warn("%s: Warning: packets_per_slave has effect only in balance-rr mode\n",
bond->dev->name);
if (packets_per_slave > 1)
bond->params.packets_per_slave =
reciprocal_value(packets_per_slave);
else
bond->params.packets_per_slave = packets_per_slave;
return 0;
}

116
drivers/net/bonding/bond_sysfs.c
View file

@ -722,10 +722,15 @@ static ssize_t bonding_store_min_links(struct device *d,
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;
if (!rtnl_trylock())
return restart_syscall();
ret = bond_option_min_links_set(bond, new_value);
if (!ret)
ret = count;
rtnl_unlock();
return ret;
}
static DEVICE_ATTR(min_links, S_IRUGO | S_IWUSR,
bonding_show_min_links, bonding_store_min_links);
@ -790,8 +795,25 @@ static ssize_t bonding_store_num_peer_notif(struct device *d,
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;
u8 new_value;
int ret;
ret = kstrtou8(buf, 10, &new_value);
if (!ret) {
pr_err("%s: invalid value %s specified.\n",
bond->dev->name, buf);
return ret;
}
if (!rtnl_trylock())
return restart_syscall();
ret = bond_option_num_peer_notif_set(bond, new_value);
if (!ret)
ret = count;
rtnl_unlock();
return ret;
}
static DEVICE_ATTR(num_grat_arp, S_IRUGO | S_IWUSR,
bonding_show_num_peer_notif, bonding_store_num_peer_notif);
@ -1273,41 +1295,21 @@ static ssize_t bonding_store_slaves_active(struct device *d,
const char *buf, size_t count)
{
struct bonding *bond = to_bond(d);
int new_value, ret = count;
struct list_head *iter;
struct slave *slave;
if (!rtnl_trylock())
return restart_syscall();
int new_value, ret;
if (sscanf(buf, "%d", &new_value) != 1) {
pr_err("%s: no all_slaves_active value specified.\n",
bond->dev->name);
ret = -EINVAL;
goto out;
return -EINVAL;
}
if (new_value == bond->params.all_slaves_active)
goto out;
if (!rtnl_trylock())
return restart_syscall();
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;
}
ret = bond_option_all_slaves_active_set(bond, new_value);
if (!ret)
ret = count;
bond_for_each_slave(bond, slave, iter) {
if (!bond_is_active_slave(slave)) {
if (new_value)
slave->inactive = 0;
else
slave->inactive = 1;
}
}
out:
rtnl_unlock();
return ret;
}
@ -1367,24 +1369,22 @@ static ssize_t bonding_store_lp_interval(struct device *d,
const char *buf, size_t count)
{
struct bonding *bond = to_bond(d);
int new_value, ret = count;
int new_value, ret;
if (sscanf(buf, "%d", &new_value) != 1) {
pr_err("%s: no lp interval value specified.\n",
bond->dev->name);
ret = -EINVAL;
goto out;
return -EINVAL;
}
if (new_value <= 0) {
pr_err ("%s: lp_interval must be between 1 and %d\n",
bond->dev->name, INT_MAX);
ret = -EINVAL;
goto out;
}
if (!rtnl_trylock())
return restart_syscall();
bond->params.lp_interval = new_value;
out:
ret = bond_option_lp_interval_set(bond, new_value);
if (!ret)
ret = count;
rtnl_unlock();
return ret;
}
@ -1409,28 +1409,22 @@ static ssize_t bonding_store_packets_per_slave(struct device *d,
const char *buf, size_t count)
{
struct bonding *bond = to_bond(d);
int new_value, ret = count;
int new_value, ret;
if (sscanf(buf, "%d", &new_value) != 1) {
pr_err("%s: no packets_per_slave value specified.\n",
bond->dev->name);
ret = -EINVAL;
goto out;
return -EINVAL;
}
if (new_value < 0 || new_value > USHRT_MAX) {
pr_err("%s: packets_per_slave must be between 0 and %u\n",
bond->dev->name, USHRT_MAX);
ret = -EINVAL;
goto out;
}
if (bond->params.mode != BOND_MODE_ROUNDROBIN)
pr_warn("%s: Warning: packets_per_slave has effect only in balance-rr mode\n",
bond->dev->name);
if (new_value > 1)
bond->params.packets_per_slave = reciprocal_value(new_value);
else
bond->params.packets_per_slave = new_value;
out:
if (!rtnl_trylock())
return restart_syscall();
ret = bond_option_packets_per_slave_set(bond, new_value);
if (!ret)
ret = count;
rtnl_unlock();
return ret;
}

7
drivers/net/bonding/bonding.h
View file

@ -461,6 +461,13 @@ int bond_option_fail_over_mac_set(struct bonding *bond, int fail_over_mac);
int bond_option_xmit_hash_policy_set(struct bonding *bond,
int xmit_hash_policy);
int bond_option_resend_igmp_set(struct bonding *bond, int resend_igmp);
int bond_option_num_peer_notif_set(struct bonding *bond, int num_peer_notif);
int bond_option_all_slaves_active_set(struct bonding *bond,
int all_slaves_active);
int bond_option_min_links_set(struct bonding *bond, int min_links);
int bond_option_lp_interval_set(struct bonding *bond, int min_links);
int bond_option_packets_per_slave_set(struct bonding *bond,
int packets_per_slave);
struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond);
struct net_device *bond_option_active_slave_get(struct bonding *bond);

5
include/uapi/linux/if_link.h
View file

@ -344,6 +344,11 @@ enum {
IFLA_BOND_FAIL_OVER_MAC,
IFLA_BOND_XMIT_HASH_POLICY,
IFLA_BOND_RESEND_IGMP,
IFLA_BOND_NUM_PEER_NOTIF,
IFLA_BOND_ALL_SLAVES_ACTIVE,
IFLA_BOND_MIN_LINKS,
IFLA_BOND_LP_INTERVAL,
IFLA_BOND_PACKETS_PER_SLAVE,
__IFLA_BOND_MAX,
};