Merge branch 'bonding_nl'

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>

5 files changed, 225 insertions, 61 deletions

diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c
index e161c9cbd91e..84acd144d075 100644
--- a/drivers/net/bonding/bond_netlink.c
+++ b/drivers/net/bonding/bond_netlink.c
@@ -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:
diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c
index 1ed7dff9a679..f8a2cd8c7b57 100644
--- a/drivers/net/bonding/bond_options.c
+++ b/drivers/net/bonding/bond_options.c
@@ -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;
+}
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index f5c1a54095b9..a0a3476fadba 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -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;
-	}
-	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;
+		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 (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;
 }
 
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index c70ad9f02b1e..5886f07dc1f3 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -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);
 
diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 6e275d5214f3..8fbc7ca878b4 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -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,
 };