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authorsfeldma@cumulusnetworks.com <sfeldma@cumulusnetworks.com>2013-12-17 21:30:23 -0800
committerDavid S. Miller <davem@davemloft.net>2013-12-19 18:32:09 -0500
commit7d1010082785b2020b1e2e1211b76209976a33df (patch)
tree94015cde239f0866b52c4b12167552db3a245264 /drivers/net/bonding
parent1cc0b1e30c662d84a89690f42826cf49e2278b97 (diff)
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@cumulusnetworks.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/bonding')
-rw-r--r--drivers/net/bonding/bond_netlink.c14
-rw-r--r--drivers/net/bonding/bond_options.c9
-rw-r--r--drivers/net/bonding/bond_sysfs.c13
-rw-r--r--drivers/net/bonding/bonding.h1
4 files changed, 33 insertions, 4 deletions
diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c
index 517521569adf..ac9a10c90a50 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 cbd832293da4..da49ac4a8d8e 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 9a3712513932..359adda17dba 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 3701e7d1fb16..7d7ad1ccbd99 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);