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Date: Tue, 17 Dec 2013 21:30:23 -0800
From: Scott Feldman <sfeldma@...ulusnetworks.com>
To: vfalico@...hat.com, fubar@...ibm.com, andy@...yhouse.net
Cc: netdev@...r.kernel.org, roopa@...ulusnetworks.com,
shm@...ulusnetworks.com
Subject: [PATCH net-next 3/5] bonding: add min_links attribute netlink support
Add IFLA_BOND_MIN_LINKS to allow get/set of bonding parameter
min_links via netlink.
Signed-off-by: Scott Feldman <sfeldma@...ulusnetworks.com>
---
drivers/net/bonding/bond_netlink.c | 14 ++++++++++++++
drivers/net/bonding/bond_options.c | 9 +++++++++
drivers/net/bonding/bond_sysfs.c | 13 +++++++++----
drivers/net/bonding/bonding.h | 1 +
include/uapi/linux/if_link.h | 1 +
5 files changed, 34 insertions(+), 4 deletions(-)
diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c
index ebc600f..1b65118 100644
--- a/drivers/net/bonding/bond_netlink.c
+++ b/drivers/net/bonding/bond_netlink.c
@@ -39,6 +39,7 @@ static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {
[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 },
};
static int bond_validate(struct nlattr *tb[], struct nlattr *data[])
@@ -223,6 +224,14 @@ static int bond_changelink(struct net_device *bond_dev,
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;
+ }
return 0;
}
@@ -258,6 +267,7 @@ static size_t bond_get_size(const struct net_device *bond_dev)
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 */
0;
}
@@ -346,6 +356,10 @@ static int bond_fill_info(struct sk_buff *skb,
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;
+
return 0;
nla_put_failure:
diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c
index cbd8322..da49ac4 100644
--- a/drivers/net/bonding/bond_options.c
+++ b/drivers/net/bonding/bond_options.c
@@ -611,3 +611,12 @@ int bond_option_all_slaves_active_set(struct bonding *bond,
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;
+}
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index 9a37125..359adda 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);
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index 3701e7d..7d7ad1c 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -464,6 +464,7 @@ 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);
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 93e9c1b..c7a0f89 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -346,6 +346,7 @@ enum {
IFLA_BOND_RESEND_IGMP,
IFLA_BOND_NUM_PEER_NOTIF,
IFLA_BOND_ALL_SLAVES_ACTIVE,
+ IFLA_BOND_MIN_LINKS,
__IFLA_BOND_MAX,
};
--
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