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Date: Mon, 13 Dec 2010 14:07:34 -0800
From: Jay Vosburgh <fubar@...ibm.com>
To: netdev@...r.kernel.org
Cc: Andy Gospodarek <andy@...yhouse.net>
Subject: [RFC PATCH 1/2] bonding: generic netlink infrastructure
Generic netlink infrastructure for bonding. Includes two
netlink operations: notification for slave link state change, and a
"get mode" netlink command.
---
drivers/net/bonding/Makefile | 2 +-
drivers/net/bonding/bond_main.c | 39 +++++++++++++++++----------------------
drivers/net/bonding/bonding.h | 1 +
include/linux/if_bonding.h | 23 +++++++++++++++++++++++
4 files changed, 42 insertions(+), 23 deletions(-)
diff --git a/drivers/net/bonding/Makefile b/drivers/net/bonding/Makefile
index 6f9c6fa..26848a2 100644
--- a/drivers/net/bonding/Makefile
+++ b/drivers/net/bonding/Makefile
@@ -4,7 +4,7 @@
obj-$(CONFIG_BONDING) += bonding.o
-bonding-objs := bond_main.o bond_3ad.o bond_alb.o bond_sysfs.o
+bonding-objs := bond_main.o bond_3ad.o bond_alb.o bond_sysfs.o bond_netlink.o
ipv6-$(subst m,y,$(CONFIG_IPV6)) += bond_ipv6.o
bonding-objs += $(ipv6-y)
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index bb33b3b..4d3a2c8 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -83,6 +83,7 @@
#include "bonding.h"
#include "bond_3ad.h"
#include "bond_alb.h"
+#include "bond_netlink.h"
/*---------------------------- Module parameters ----------------------------*/
@@ -2417,6 +2418,8 @@ static void bond_miimon_commit(struct bonding *bond)
bond_alb_handle_link_change(bond, slave,
BOND_LINK_UP);
+ bond_nl_link_change(bond, slave, BOND_LINK_UP);
+
if (!bond->curr_active_slave ||
(slave == bond->primary_slave))
goto do_failover;
@@ -2444,6 +2447,8 @@ static void bond_miimon_commit(struct bonding *bond)
bond_alb_handle_link_change(bond, slave,
BOND_LINK_DOWN);
+ bond_nl_link_change(bond, slave, BOND_LINK_DOWN);
+
if (slave == bond->curr_active_slave)
goto do_failover;
@@ -2865,6 +2870,7 @@ void bond_loadbalance_arp_mon(struct work_struct *work)
bond->dev->name,
slave->dev->name);
}
+ bond_nl_link_change(bond, slave, BOND_LINK_UP);
}
} else {
/* slave->link == BOND_LINK_UP */
@@ -2892,6 +2898,8 @@ void bond_loadbalance_arp_mon(struct work_struct *work)
if (slave == oldcurrent)
do_failover = 1;
+
+ bond_nl_link_change(bond, slave, BOND_LINK_DOWN);
}
}
@@ -3038,6 +3046,8 @@ static void bond_ab_arp_commit(struct bonding *bond, int delta_in_ticks)
pr_info("%s: link status definitely up for interface %s.\n",
bond->dev->name, slave->dev->name);
+ bond_nl_link_change(bond, slave, BOND_LINK_UP);
+
if (!bond->curr_active_slave ||
(slave == bond->primary_slave))
goto do_failover;
@@ -3056,6 +3066,8 @@ static void bond_ab_arp_commit(struct bonding *bond, int delta_in_ticks)
pr_info("%s: link status definitely down for interface %s, disabling it\n",
bond->dev->name, slave->dev->name);
+ bond_nl_link_change(bond, slave, BOND_LINK_DOWN);
+
if (slave == bond->curr_active_slave) {
bond->current_arp_slave = NULL;
goto do_failover;
@@ -4683,7 +4695,7 @@ static void bond_destructor(struct net_device *bond_dev)
free_netdev(bond_dev);
}
-static void bond_setup(struct net_device *bond_dev)
+void bond_setup(struct net_device *bond_dev)
{
struct bonding *bond = netdev_priv(bond_dev);
@@ -5191,24 +5203,6 @@ static int bond_init(struct net_device *bond_dev)
return 0;
}
-static int bond_validate(struct nlattr *tb[], struct nlattr *data[])
-{
- if (tb[IFLA_ADDRESS]) {
- if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
- return -EINVAL;
- if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
- return -EADDRNOTAVAIL;
- }
- return 0;
-}
-
-static struct rtnl_link_ops bond_link_ops __read_mostly = {
- .kind = "bond",
- .priv_size = sizeof(struct bonding),
- .setup = bond_setup,
- .validate = bond_validate,
-};
-
/* Create a new bond based on the specified name and bonding parameters.
* If name is NULL, obtain a suitable "bond%d" name for us.
* Caller must NOT hold rtnl_lock; we need to release it here before we
@@ -5216,6 +5210,7 @@ static struct rtnl_link_ops bond_link_ops __read_mostly = {
*/
int bond_create(struct net *net, const char *name)
{
+ extern struct rtnl_link_ops bond_link_ops;
struct net_device *bond_dev;
int res;
@@ -5304,7 +5299,7 @@ static int __init bonding_init(void)
if (res)
goto out;
- res = rtnl_link_register(&bond_link_ops);
+ res = bond_netlink_init();
if (res)
goto err_link;
@@ -5325,7 +5320,7 @@ static int __init bonding_init(void)
out:
return res;
err:
- rtnl_link_unregister(&bond_link_ops);
+ bond_netlink_fini();
err_link:
unregister_pernet_subsys(&bond_net_ops);
#ifdef CONFIG_NET_POLL_CONTROLLER
@@ -5343,7 +5338,7 @@ static void __exit bonding_exit(void)
bond_destroy_sysfs();
- rtnl_link_unregister(&bond_link_ops);
+ bond_netlink_fini();
unregister_pernet_subsys(&bond_net_ops);
#ifdef CONFIG_NET_POLL_CONTROLLER
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index ad3ae46..db7bb06 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -380,6 +380,7 @@ void bond_select_active_slave(struct bonding *bond);
void bond_change_active_slave(struct bonding *bond, struct slave *new_active);
void bond_register_arp(struct bonding *);
void bond_unregister_arp(struct bonding *);
+extern void bond_setup(struct net_device *bond_dev);
struct bond_net {
struct net * net; /* Associated network namespace */
diff --git a/include/linux/if_bonding.h b/include/linux/if_bonding.h
index a17edda..b03d832 100644
--- a/include/linux/if_bonding.h
+++ b/include/linux/if_bonding.h
@@ -114,6 +114,29 @@ struct ad_info {
__u8 partner_system[ETH_ALEN];
};
+enum {
+ BOND_GENL_ATTR_UNSPEC = 0,
+ BOND_GENL_ATTR_MASTER_INDEX,
+ BOND_GENL_ATTR_SLAVE_INDEX,
+ BOND_GENL_ATTR_MODE,
+ BOND_GENL_ATTR_SLAVE_LINK,
+ __BOND_GENL_ATTR_MAX,
+};
+
+#define BOND_GENL_ATTR_MAX (__BOND_GENL_ATTR_MAX - 1)
+
+enum {
+ BOND_GENL_CMD_UNSPEC = 0,
+ BOND_GENL_CMD_GET_MODE,
+ BOND_GENL_SLAVE_LINK,
+ __BOND_GENL_MAX,
+};
+
+#define BOND_GENL_MAX (__BOND_GENL_MAX - 1)
+
+#define BOND_GENL_VERSION 1
+#define BOND_GENL_MC_GROUP "bond_mc_group"
+
#endif /* _LINUX_IF_BONDING_H */
/*
--
1.6.0.2
--
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