bonding: add arp_all_targets netlink support
Add IFLA_BOND_ARP_ALL_TARGETS to allow get/set of bonding parameter
arp_all_targets 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>
diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c
index 8588cb9..d7d84db 100644
--- a/drivers/net/bonding/bond_netlink.c
+++ b/drivers/net/bonding/bond_netlink.c
@@ -31,6 +31,7 @@
[IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 },
[IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED },
[IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 },
+ [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 },
};
static int bond_validate(struct nlattr *tb[], struct nlattr *data[])
@@ -145,6 +146,14 @@
if (err)
return err;
}
+ if (data[IFLA_BOND_ARP_ALL_TARGETS]) {
+ int arp_all_targets =
+ nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]);
+
+ err = bond_option_arp_all_targets_set(bond, arp_all_targets);
+ if (err)
+ return err;
+ }
return 0;
}
@@ -172,6 +181,7 @@
/* IFLA_BOND_ARP_IP_TARGET */
nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS +
nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_VALIDATE */
+ nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */
0;
}
@@ -227,6 +237,10 @@
if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate))
goto nla_put_failure;
+ if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS,
+ bond->params.arp_all_targets))
+ 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 698079e..dfef673 100644
--- a/drivers/net/bonding/bond_options.c
+++ b/drivers/net/bonding/bond_options.c
@@ -458,3 +458,14 @@
return 0;
}
+
+int bond_option_arp_all_targets_set(struct bonding *bond, int arp_all_targets)
+{
+ pr_info("%s: setting arp_all_targets to %s (%d).\n",
+ bond->dev->name, arp_all_targets_tbl[arp_all_targets].modename,
+ arp_all_targets);
+
+ bond->params.arp_all_targets = arp_all_targets;
+
+ return 0;
+}
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index bda00a0..dad9bea 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -399,7 +399,7 @@
const char *buf, size_t count)
{
struct bonding *bond = to_bond(d);
- int new_value;
+ int new_value, ret;
new_value = bond_parse_parm(buf, arp_all_targets_tbl);
if (new_value < 0) {
@@ -407,13 +407,17 @@
bond->dev->name, buf);
return -EINVAL;
}
- pr_info("%s: setting arp_all_targets to %s (%d).\n",
- bond->dev->name, arp_all_targets_tbl[new_value].modename,
- new_value);
- bond->params.arp_all_targets = new_value;
+ if (!rtnl_trylock())
+ return restart_syscall();
- return count;
+ ret = bond_option_arp_all_targets_set(bond, new_value);
+ if (!ret)
+ ret = count;
+
+ rtnl_unlock();
+
+ return ret;
}
static DEVICE_ATTR(arp_all_targets, S_IRUGO | S_IWUSR,
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index cef10ad..8283cbd 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -449,6 +449,7 @@
int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target);
int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target);
int bond_option_arp_validate_set(struct bonding *bond, int arp_validate);
+int bond_option_arp_all_targets_set(struct bonding *bond, int arp_all_targets);
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 3ba16fa..a897b7e 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -338,6 +338,7 @@
IFLA_BOND_ARP_INTERVAL,
IFLA_BOND_ARP_IP_TARGET,
IFLA_BOND_ARP_VALIDATE,
+ IFLA_BOND_ARP_ALL_TARGETS,
__IFLA_BOND_MAX,
};