From 89901972de4c00e74e56529804493734d77ee3d3 Mon Sep 17 00:00:00 2001 From: "sfeldma@cumulusnetworks.com" Date: Sun, 15 Dec 2013 16:42:05 -0800 Subject: [PATCH] bonding: add fail_over_mac attribute netlink support Add IFLA_BOND_FAIL_OVER_MAC to allow get/set of bonding parameter fail_over_mac via netlink. Signed-off-by: Scott Feldman Signed-off-by: David S. Miller --- drivers/net/bonding/bond_netlink.c | 14 ++++++++++++++ drivers/net/bonding/bond_options.c | 16 ++++++++++++++++ drivers/net/bonding/bond_sysfs.c | 26 ++++++++------------------ drivers/net/bonding/bonding.h | 1 + include/uapi/linux/if_link.h | 1 + 5 files changed, 40 insertions(+), 18 deletions(-) diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c index b361c674dc00..dc465ad3fb7c 100644 --- a/drivers/net/bonding/bond_netlink.c +++ b/drivers/net/bonding/bond_netlink.c @@ -34,6 +34,7 @@ static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = { [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 }, [IFLA_BOND_PRIMARY] = { .type = NLA_U32 }, [IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 }, + [IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 }, }; static int bond_validate(struct nlattr *tb[], struct nlattr *data[]) @@ -177,6 +178,14 @@ static int bond_changelink(struct net_device *bond_dev, if (err) return err; } + if (data[IFLA_BOND_FAIL_OVER_MAC]) { + int fail_over_mac = + nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]); + + err = bond_option_fail_over_mac_set(bond, fail_over_mac); + if (err) + return err; + } return 0; } @@ -207,6 +216,7 @@ static size_t bond_get_size(const struct net_device *bond_dev) nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */ nla_total_size(sizeof(u32)) + /* IFLA_BOND_PRIMARY */ nla_total_size(sizeof(u8)) + /* IFLA_BOND_PRIMARY_RESELECT */ + nla_total_size(sizeof(u8)) + /* IFLA_BOND_FAIL_OVER_MAC */ 0; } @@ -275,6 +285,10 @@ static int bond_fill_info(struct sk_buff *skb, bond->params.primary_reselect)) goto nla_put_failure; + if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC, + bond->params.fail_over_mac)) + 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 80a9df4e4bf7..86f462008932 100644 --- a/drivers/net/bonding/bond_options.c +++ b/drivers/net/bonding/bond_options.c @@ -535,3 +535,19 @@ int bond_option_primary_reselect_set(struct bonding *bond, int primary_reselect) return 0; } + +int bond_option_fail_over_mac_set(struct bonding *bond, int fail_over_mac) +{ + if (bond_has_slaves(bond)) { + pr_err("%s: Can't alter fail_over_mac with slaves in bond.\n", + bond->dev->name); + return -EPERM; + } + + bond->params.fail_over_mac = fail_over_mac; + pr_info("%s: Setting fail_over_mac to %s (%d).\n", + bond->dev->name, fail_over_mac_tbl[fail_over_mac].modename, + fail_over_mac); + + return 0; +} diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c index 324afa5fda93..c84a90f9a0ac 100644 --- a/drivers/net/bonding/bond_sysfs.c +++ b/drivers/net/bonding/bond_sysfs.c @@ -442,33 +442,23 @@ static ssize_t bonding_store_fail_over_mac(struct device *d, struct device_attribute *attr, const char *buf, size_t count) { - int new_value, ret = count; + int new_value, ret; struct bonding *bond = to_bond(d); - if (!rtnl_trylock()) - return restart_syscall(); - - if (bond_has_slaves(bond)) { - pr_err("%s: Can't alter fail_over_mac with slaves in bond.\n", - bond->dev->name); - ret = -EPERM; - goto out; - } - new_value = bond_parse_parm(buf, fail_over_mac_tbl); if (new_value < 0) { pr_err("%s: Ignoring invalid fail_over_mac value %s.\n", bond->dev->name, buf); - ret = -EINVAL; - goto out; + return -EINVAL; } - bond->params.fail_over_mac = new_value; - pr_info("%s: Setting fail_over_mac to %s (%d).\n", - bond->dev->name, fail_over_mac_tbl[new_value].modename, - new_value); + if (!rtnl_trylock()) + return restart_syscall(); + + ret = bond_option_fail_over_mac_set(bond, new_value); + if (!ret) + ret = count; -out: rtnl_unlock(); return ret; } diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h index 4e89d0480a5e..b69059b361a0 100644 --- a/drivers/net/bonding/bonding.h +++ b/drivers/net/bonding/bonding.h @@ -457,6 +457,7 @@ int bond_option_arp_all_targets_set(struct bonding *bond, int arp_all_targets); int bond_option_primary_set(struct bonding *bond, const char *primary); int bond_option_primary_reselect_set(struct bonding *bond, int primary_reselect); +int bond_option_fail_over_mac_set(struct bonding *bond, int fail_over_mac); 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 cf59d54a199d..fd181abd19b9 100644 --- a/include/uapi/linux/if_link.h +++ b/include/uapi/linux/if_link.h @@ -341,6 +341,7 @@ enum { IFLA_BOND_ARP_ALL_TARGETS, IFLA_BOND_PRIMARY, IFLA_BOND_PRIMARY_RESELECT, + IFLA_BOND_FAIL_OVER_MAC, __IFLA_BOND_MAX, }; -- 2.30.2