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bonding: add slave_changelink support and use it for queue_id

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This patch adds support for slave_changelink to the bonding and uses it
to give the ability to change the queue_id of the enslaved devices via
netlink. It sets slave_maxtype and uses bond_changelink as a prototype for
bond_slave_changelink.
Example/test command after the iproute2 patch:
 ip link set eth0 type bond_slave queue_id 10

CC: David S. Miller <davem@davemloft.net>
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Veaceslav Falico <vfalico@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>

Suggested-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Aleksandrov 2014-08-27 16:06:46 +02:00 committed by David S. Miller
parent 688d1945bc
commit 0f23124aaa
1 changed files with 29 additions and 0 deletions
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29
drivers/net/bonding/bond_netlink.c
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@ -107,6 +107,33 @@ static int bond_validate(struct nlattr *tb[], struct nlattr *data[])
return 0;
}
static int bond_slave_changelink(struct net_device *bond_dev,
struct net_device *slave_dev,
struct nlattr *tb[], struct nlattr *data[])
{
struct bonding *bond = netdev_priv(bond_dev);
struct bond_opt_value newval;
int err;
if (!data)
return 0;
if (data[IFLA_BOND_SLAVE_QUEUE_ID]) {
u16 queue_id = nla_get_u16(data[IFLA_BOND_SLAVE_QUEUE_ID]);
char queue_id_str[IFNAMSIZ + 7];
/* queue_id option setting expects slave_name:queue_id */
snprintf(queue_id_str, sizeof(queue_id_str), "%s:%u\n",
slave_dev->name, queue_id);
bond_opt_initstr(&newval, queue_id_str);
err = __bond_opt_set(bond, BOND_OPT_QUEUE_ID, &newval);
if (err)
return err;
}
return 0;
}
static int bond_changelink(struct net_device *bond_dev,
struct nlattr *tb[], struct nlattr *data[])
{
@ -553,10 +580,12 @@ struct rtnl_link_ops bond_link_ops __read_mostly = {
.priv_size = sizeof(struct bonding),
.setup = bond_setup,
.maxtype = IFLA_BOND_MAX,
.slave_maxtype = IFLA_BOND_SLAVE_MAX,
.policy = bond_policy,
.validate = bond_validate,
.newlink = bond_newlink,
.changelink = bond_changelink,
.slave_changelink = bond_slave_changelink,
.get_size = bond_get_size,
.fill_info = bond_fill_info,
.get_num_tx_queues = bond_get_num_tx_queues,