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bonding: add updelay netlink support

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Add IFLA_BOND_UPDELAY to allow get/set of bonding parameter
updelay via netlink.

Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
sfeldma@cumulusnetworks.com 2013-12-12 14:10:02 -08:00 • committed by David S. Miller
parent eecdaa6e20
commit 25852e29df
5 changed files with 54 additions and 32 deletions
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13
drivers/net/bonding/bond_netlink.c
View file

@ -25,6 +25,7 @@ static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {
[IFLA_BOND_MODE] = { .type = NLA_U8 },
[IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 },
[IFLA_BOND_MIIMON] = { .type = NLA_U32 },
[IFLA_BOND_UPDELAY] = { .type = NLA_U32 },
};
static int bond_validate(struct nlattr *tb[], struct nlattr *data[])
@ -77,6 +78,13 @@ static int bond_changelink(struct net_device *bond_dev,
if (err)
return err;
}
if (data[IFLA_BOND_UPDELAY]) {
int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]);
err = bond_option_updelay_set(bond, updelay);
if (err)
return err;
}
return 0;
}
@ -97,6 +105,7 @@ static size_t bond_get_size(const struct net_device *bond_dev)
return nla_total_size(sizeof(u8)) + /* IFLA_BOND_MODE */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_ACTIVE_SLAVE */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */
0;
}
@ -116,6 +125,10 @@ static int bond_fill_info(struct sk_buff *skb,
if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon))
goto nla_put_failure;
if (nla_put_u32(skb, IFLA_BOND_UPDELAY,
bond->params.updelay * bond->params.miimon))
goto nla_put_failure;
return 0;
nla_put_failure:

29
drivers/net/bonding/bond_options.c
View file

@ -187,3 +187,32 @@ int bond_option_miimon_set(struct bonding *bond, int miimon)
}
return 0;
}
int bond_option_updelay_set(struct bonding *bond, int updelay)
{
if (!(bond->params.miimon)) {
pr_err("%s: Unable to set up delay as MII monitoring is disabled\n",
bond->dev->name);
return -EPERM;
}
if (updelay < 0) {
pr_err("%s: Invalid up delay value %d not in range %d-%d; rejected.\n",
bond->dev->name, updelay, 0, INT_MAX);
return -EINVAL;
} else {
if ((updelay % bond->params.miimon) != 0) {
pr_warn("%s: Warning: up delay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n",
bond->dev->name, updelay,
bond->params.miimon,
(updelay / bond->params.miimon) *
bond->params.miimon);
}
bond->params.updelay = updelay / bond->params.miimon;
pr_info("%s: Setting up delay to %d.\n",
bond->dev->name,
bond->params.updelay * bond->params.miimon);
}
return 0;
}

42
drivers/net/bonding/bond_sysfs.c
View file

@ -747,44 +747,22 @@ static ssize_t bonding_store_updelay(struct device *d,
struct device_attribute *attr,
const char *buf, size_t count)
{
int new_value, ret = count;
int new_value, ret;
struct bonding *bond = to_bond(d);
if (!rtnl_trylock())
return restart_syscall();
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 up delay value %d not in range %d-%d; rejected.\n",
bond->dev->name, new_value, 0, 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);
bond->dev->name);
return -EINVAL;
}
out:
if (!rtnl_trylock())
return restart_syscall();
ret = bond_option_updelay_set(bond, new_value);
if (!ret)
ret = count;
rtnl_unlock();
return ret;
}

1
drivers/net/bonding/bonding.h
View file

@ -440,6 +440,7 @@ void bond_netlink_fini(void);
int bond_option_mode_set(struct bonding *bond, int mode);
int bond_option_active_slave_set(struct bonding *bond, struct net_device *slave_dev);
int bond_option_miimon_set(struct bonding *bond, int miimon);
int bond_option_updelay_set(struct bonding *bond, int updelay);
struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond);
struct net_device *bond_option_active_slave_get(struct bonding *bond);

1
include/uapi/linux/if_link.h
View file

@ -332,6 +332,7 @@ enum {
IFLA_BOND_MODE,
IFLA_BOND_ACTIVE_SLAVE,
IFLA_BOND_MIIMON,
IFLA_BOND_UPDELAY,
__IFLA_BOND_MAX,
};