bonding: convert downdelay to use the new option API

This patch adds the necessary changes so downdelay would use
the new bonding option API. Also some trivial style fixes.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

5 files changed, 27 insertions, 32 deletions

diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c
index 9164a5a8e44f..f30397e7131f 100644
--- a/drivers/net/bonding/bond_netlink.c
+++ b/drivers/net/bonding/bond_netlink.c
@@ -146,7 +146,8 @@ static int bond_changelink(struct net_device *bond_dev,
         if (data[IFLA_BOND_DOWNDELAY]) {
                 int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]);
 
-                err = bond_option_downdelay_set(bond, downdelay);
+                bond_opt_initval(&newval, downdelay);
+                err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval);
                 if (err)
                         return err;
         }
diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c
index df5f007ddaa5..03514f7e17b9 100644
--- a/drivers/net/bonding/bond_options.c
+++ b/drivers/net/bonding/bond_options.c
@@ -135,6 +135,13 @@ static struct bond_option bond_opts[] = {
                 .flags = BOND_OPTFLAG_RAWVAL,
                 .set = bond_option_arp_ip_targets_set
         },
+        [BOND_OPT_DOWNDELAY] = {
+                .id = BOND_OPT_DOWNDELAY,
+                .name = "downdelay",
+                .desc = "Delay before considering link down, in milliseconds",
+                .values = bond_intmax_tbl,
+                .set = bond_option_downdelay_set
+        },
         { }
 };
 
@@ -580,31 +587,25 @@ int bond_option_updelay_set(struct bonding *bond, int updelay)
         return 0;
 }
 
-int bond_option_downdelay_set(struct bonding *bond, int downdelay)
+int bond_option_downdelay_set(struct bonding *bond,
+                              struct bond_opt_value *newval)
 {
-        if (!(bond->params.miimon)) {
+        if (!bond->params.miimon) {
                 pr_err("%s: Unable to set down delay as MII monitoring is disabled\n",
                        bond->dev->name);
                 return -EPERM;
         }
-
-        if (downdelay < 0) {
-                pr_err("%s: Invalid down delay value %d not in range %d-%d; rejected.\n",
-                       bond->dev->name, downdelay, 0, INT_MAX);
-                return -EINVAL;
-        } else {
-                if ((downdelay % bond->params.miimon) != 0) {
-                        pr_warn("%s: Warning: down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n",
-                                bond->dev->name, downdelay,
-                                bond->params.miimon,
-                                (downdelay / bond->params.miimon) *
-                                bond->params.miimon);
-                }
-                bond->params.downdelay = downdelay / bond->params.miimon;
-                pr_info("%s: Setting down delay to %d.\n",
-                        bond->dev->name,
-                        bond->params.downdelay * bond->params.miimon);
+        if ((newval->value % bond->params.miimon) != 0) {
+                pr_warn("%s: Warning: down delay (%llu) is not a multiple of miimon (%d), delay rounded to %llu ms\n",
+                        bond->dev->name, newval->value,
+                        bond->params.miimon,
+                        (newval->value / bond->params.miimon) *
+                        bond->params.miimon);
         }
+        bond->params.downdelay = newval->value / bond->params.miimon;
+        pr_info("%s: Setting down delay to %d.\n",
+                bond->dev->name,
+                bond->params.downdelay * bond->params.miimon);
 
         return 0;
 }
diff --git a/drivers/net/bonding/bond_options.h b/drivers/net/bonding/bond_options.h
index da351489a583..5a3f4053811d 100644
--- a/drivers/net/bonding/bond_options.h
+++ b/drivers/net/bonding/bond_options.h
@@ -46,6 +46,7 @@ enum {
         BOND_OPT_FAIL_OVER_MAC,
         BOND_OPT_ARP_INTERVAL,
         BOND_OPT_ARP_TARGETS,
+        BOND_OPT_DOWNDELAY,
         BOND_OPT_LAST
 };
 
@@ -121,4 +122,6 @@ int bond_option_arp_interval_set(struct bonding *bond,
 int bond_option_arp_ip_targets_set(struct bonding *bond,
                                    struct bond_opt_value *newval);
 void bond_option_arp_ip_targets_clear(struct bonding *bond);
+int bond_option_downdelay_set(struct bonding *bond,
+                              struct bond_opt_value *newval);
 #endif /* _BOND_OPTIONS_H */
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index 5eeb3a2add02..b4f67132b3ba 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -501,22 +501,13 @@ static ssize_t bonding_store_downdelay(struct device *d,
                                        struct device_attribute *attr,
                                        const char *buf, size_t count)
 {
-        int new_value, ret;
         struct bonding *bond = to_bond(d);
+        int ret;
 
-        if (sscanf(buf, "%d", &new_value) != 1) {
-                pr_err("%s: no down delay value specified.\n", bond->dev->name);
-                return -EINVAL;
-        }
-
-        if (!rtnl_trylock())
-                return restart_syscall();
-
-        ret = bond_option_downdelay_set(bond, new_value);
+        ret = bond_opt_tryset_rtnl(bond, BOND_OPT_DOWNDELAY, (char *)buf);
         if (!ret)
                 ret = count;
 
-        rtnl_unlock();
         return ret;
 }
 static DEVICE_ATTR(downdelay, S_IRUGO | S_IWUSR,
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index 5a63c0e777e7..6286bb7b2092 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -455,7 +455,6 @@ void bond_netlink_fini(void);
 int bond_option_active_slave_set(struct bonding *bond, struct net_device *slave_dev);
 int bond_option_miimon_set(struct bonding *bond, int miimon);
 int bond_option_updelay_set(struct bonding *bond, int updelay);
-int bond_option_downdelay_set(struct bonding *bond, int downdelay);
 int bond_option_use_carrier_set(struct bonding *bond, int use_carrier);
 int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target);
 int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target);