bonding: make IS_IP_TARGET_UNUSABLE_ADDRESS an inline function

Also, use standard IP primitives to check the address.

CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 8 insertions, 6 deletions

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 744c47111045..1af2be53ebb5 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -4195,7 +4195,7 @@ static int bond_check_params(struct bond_params *params)
                    catch mistakes */
                 __be32 ip;
                 if (!in4_pton(arp_ip_target[i], -1, (u8 *)&ip, -1, NULL) ||
-                    IS_IP_TARGET_UNUSABLE_ADDRESS(ip)) {
+                    !bond_is_ip_target_ok(ip)) {
                         pr_warn("Warning: bad arp_ip_target module parameter (%s), ARP monitoring will not be performed\n",
                                 arp_ip_target[i]);
                         arp_interval = 0;
diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c
index dd7292fa4665..0cf4c1a9bb7b 100644
--- a/drivers/net/bonding/bond_options.c
+++ b/drivers/net/bonding/bond_options.c
@@ -942,7 +942,7 @@ static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
         __be32 *targets = bond->params.arp_targets;
         int ind;
 
-        if (IS_IP_TARGET_UNUSABLE_ADDRESS(target)) {
+        if (!bond_is_ip_target_ok(target)) {
                 pr_err("%s: invalid ARP target %pI4 specified for addition\n",
                        bond->dev->name, &target);
                 return -EINVAL;
@@ -987,7 +987,7 @@ static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target)
         unsigned long *targets_rx;
         int ind, i;
 
-        if (IS_IP_TARGET_UNUSABLE_ADDRESS(target)) {
+        if (!bond_is_ip_target_ok(target)) {
                 pr_err("%s: invalid ARP target %pI4 specified for removal\n",
                        bond->dev->name, &target);
                 return -EINVAL;
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index bb663a4db137..ac75b0fbf768 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -54,9 +54,6 @@
                      ((slave)->link == BOND_LINK_UP) && \
                      bond_is_active_slave(slave))
 
-#define IS_IP_TARGET_UNUSABLE_ADDRESS(a)        \
-        ((htonl(INADDR_BROADCAST) == a) ||      \
-         ipv4_is_zeronet(a))
 /*
  * Less bad way to call ioctl from within the kernel; this needs to be
  * done some other way to get the call out of interrupt context.
@@ -406,6 +403,11 @@ static inline int slave_do_arp_validate_only(struct bonding *bond)
         return bond->params.arp_validate & BOND_ARP_FILTER;
 }
 
+static inline int bond_is_ip_target_ok(__be32 addr)
+{
+        return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr);
+}
+
 /* Get the oldest arp which we've received on this slave for bond's
  * arp_targets.
  */