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bonding: add use_carrier netlink support

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Add IFLA_BOND_USE_CARRIER to allow get/set of bonding parameter
use_carrier 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 14:10:16 -08:00 committed by David S. Miller
parent c7461f9bf5
commit 9f53e14e86
5 changed files with 39 additions and 13 deletions
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12
drivers/net/bonding/bond_netlink.c
View File

@ -27,6 +27,7 @@ static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {
[IFLA_BOND_MIIMON] = { .type = NLA_U32 },
[IFLA_BOND_UPDELAY] = { .type = NLA_U32 },
[IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 },
[IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 },
};
static int bond_validate(struct nlattr *tb[], struct nlattr *data[])
@ -93,6 +94,13 @@ static int bond_changelink(struct net_device *bond_dev,
if (err)
return err;
}
if (data[IFLA_BOND_USE_CARRIER]) {
int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]);
err = bond_option_use_carrier_set(bond, use_carrier);
if (err)
return err;
}
return 0;
}
@ -115,6 +123,7 @@ static size_t bond_get_size(const struct net_device *bond_dev)
nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_DOWNDELAY */
nla_total_size(sizeof(u8)) + /* IFLA_BOND_USE_CARRIER */
0;
}
@ -142,6 +151,9 @@ static int bond_fill_info(struct sk_buff *skb,
bond->params.downdelay * bond->params.miimon))
goto nla_put_failure;
if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier))
goto nla_put_failure;
return 0;
nla_put_failure:

14
drivers/net/bonding/bond_options.c
View File

@ -245,3 +245,17 @@ int bond_option_downdelay_set(struct bonding *bond, int downdelay)
return 0;
}
int bond_option_use_carrier_set(struct bonding *bond, int use_carrier)
{
if ((use_carrier == 0) || (use_carrier == 1)) {
bond->params.use_carrier = use_carrier;
pr_info("%s: Setting use_carrier to %d.\n",
bond->dev->name, use_carrier);
} else {
pr_info("%s: Ignoring invalid use_carrier value %d.\n",
bond->dev->name, use_carrier);
}
return 0;
}

24
drivers/net/bonding/bond_sysfs.c
View File

@ -1097,25 +1097,23 @@ static ssize_t bonding_store_carrier(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 (sscanf(buf, "%d", &new_value) != 1) {
pr_err("%s: no use_carrier value specified.\n",
bond->dev->name);
ret = -EINVAL;
goto out;
return -EINVAL;
}
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:
if (!rtnl_trylock())
return restart_syscall();
ret = bond_option_use_carrier_set(bond, new_value);
if (!ret)
ret = count;
rtnl_unlock();
return ret;
}
static DEVICE_ATTR(use_carrier, S_IRUGO | S_IWUSR,

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

@ -442,6 +442,7 @@ int bond_option_active_slave_set(struct bonding *bond, struct net_device *slave_
int bond_option_miimon_set(struct bonding *bond, int miimon);
int bond_option_updelay_set(struct bonding *bond, int updelay);
int bond_option_downdelay_set(struct bonding *bond, int downdelay);
int bond_option_use_carrier_set(struct bonding *bond, int use_carrier);
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

@ -334,6 +334,7 @@ enum {
IFLA_BOND_MIIMON,
IFLA_BOND_UPDELAY,
IFLA_BOND_DOWNDELAY,
IFLA_BOND_USE_CARRIER,
__IFLA_BOND_MAX,
};