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Commit 998e40bb authored by sfeldma@cumulusnetworks.com's avatar sfeldma@cumulusnetworks.com Committed by David S. Miller
Browse files

bonding: add lacp_rate attribute netlink support 



Add IFLA_BOND_AD_LACP_RATE to allow get/set of bonding parameter
lacp_rate via netlink.

Signed-off-by: default avatarScott Feldman <sfeldma@cumulusnetworks.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent baf42552

drivers/net/bonding/bond_netlink.c

+14 −0
Original line number Diff line number Diff line
@@ -43,6 +43,7 @@ static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = { 
	[IFLA_BOND_MIN_LINKS]		= { .type = NLA_U32 },

	[IFLA_BOND_LP_INTERVAL]		= { .type = NLA_U32 },

	[IFLA_BOND_PACKETS_PER_SLAVE]	= { .type = NLA_U32 },

	[IFLA_BOND_AD_LACP_RATE]	= { .type = NLA_U8 },

};



static int bond_validate(struct nlattr *tb[], struct nlattr *data[])
@@ -252,6 +253,14 @@ static int bond_changelink(struct net_device *bond_dev, 
		if (err)

			return err;

	}

	if (data[IFLA_BOND_AD_LACP_RATE]) {

		int lacp_rate =

			nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]);



		err = bond_option_lacp_rate_set(bond, lacp_rate);

		if (err)

			return err;

	}

	return 0;

}
@@ -290,6 +299,7 @@ static size_t bond_get_size(const struct net_device *bond_dev) 
		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 */

		nla_total_size(sizeof(u8)) +	/* IFLA_BOND_AD_LACP_RATE */

		0;

}
@@ -395,6 +405,10 @@ static int bond_fill_info(struct sk_buff *skb, 
			packets_per_slave))

		goto nla_put_failure;



	if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE,

		       bond->params.lacp_fast))

		goto nla_put_failure;



	return 0;



nla_put_failure:

drivers/net/bonding/bond_options.c

+29 −0
Original line number Diff line number Diff line
@@ -656,3 +656,32 @@ int bond_option_packets_per_slave_set(struct bonding *bond, 


	return 0;

}



int bond_option_lacp_rate_set(struct bonding *bond, int lacp_rate)

{

	if (bond->dev->flags & IFF_UP) {

		pr_err("%s: Unable to update LACP rate because interface is up.\n",

		       bond->dev->name);

		return -EPERM;

	}



	if (bond->params.mode != BOND_MODE_8023AD) {

		pr_err("%s: Unable to update LACP rate because bond is not in 802.3ad mode.\n",

		       bond->dev->name);

		return -EPERM;

	}



	if ((lacp_rate == 1) || (lacp_rate == 0)) {

		bond->params.lacp_fast = lacp_rate;

		bond_3ad_update_lacp_rate(bond);

		pr_info("%s: Setting LACP rate to %s (%d).\n",

			bond->dev->name, bond_lacp_tbl[lacp_rate].modename,

			lacp_rate);

	} else {

		pr_err("%s: Ignoring invalid LACP rate value %d.\n",

		       bond->dev->name, lacp_rate);

		return -EINVAL;

	}



	return 0;

}

drivers/net/bonding/bond_sysfs.c

+11 −29
Original line number Diff line number Diff line
@@ -658,41 +658,23 @@ static ssize_t bonding_store_lacp(struct device *d, 
				  const char *buf, size_t count)

{

	struct bonding *bond = to_bond(d);

	int new_value, ret = count;



	if (!rtnl_trylock())

		return restart_syscall();



	if (bond->dev->flags & IFF_UP) {

		pr_err("%s: Unable to update LACP rate because interface is up.\n",

		       bond->dev->name);

		ret = -EPERM;

		goto out;

	}



	if (bond->params.mode != BOND_MODE_8023AD) {

		pr_err("%s: Unable to update LACP rate because bond is not in 802.3ad mode.\n",

		       bond->dev->name);

		ret = -EPERM;

		goto out;

	}

	int new_value, ret;



	new_value = bond_parse_parm(buf, bond_lacp_tbl);



	if ((new_value == 1) || (new_value == 0)) {

		bond->params.lacp_fast = new_value;

		bond_3ad_update_lacp_rate(bond);

		pr_info("%s: Setting LACP rate to %s (%d).\n",

			bond->dev->name, bond_lacp_tbl[new_value].modename,

			new_value);

	} else {

	if (new_value < 0) {

		pr_err("%s: Ignoring invalid LACP rate value %.*s.\n",

		       bond->dev->name, (int)strlen(buf) - 1, buf);

		ret = -EINVAL;

		return -EINVAL;

	}

out:

	rtnl_unlock();



	if (!rtnl_trylock())

		return restart_syscall();



	ret = bond_option_lacp_rate_set(bond, new_value);

	if (!ret)

		ret = count;



	rtnl_unlock();

	return ret;

}

static DEVICE_ATTR(lacp_rate, S_IRUGO | S_IWUSR,

drivers/net/bonding/bonding.h

+1 −0
Original line number Diff line number Diff line
@@ -464,6 +464,7 @@ 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);

int bond_option_lacp_rate_set(struct bonding *bond, int lacp_rate);

struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond);

struct net_device *bond_option_active_slave_get(struct bonding *bond);

include/uapi/linux/if_link.h

+1 −0
Original line number Diff line number Diff line
@@ -349,6 +349,7 @@ enum { 
	IFLA_BOND_MIN_LINKS,

	IFLA_BOND_LP_INTERVAL,

	IFLA_BOND_PACKETS_PER_SLAVE,

	IFLA_BOND_AD_LACP_RATE,

	__IFLA_BOND_MAX,

};