5 files changed, 30 insertions, 26 deletions

diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h
index 1ecaea74d55a..91ac97c20777 100644
--- a/include/linux/rtnetlink.h
+++ b/include/linux/rtnetlink.h
@@ -93,6 +93,8 @@ enum {
 #define RTM_MAX         (((__RTM_MAX + 3) & ~3) - 1)
 };
 
+#define RTM_NR_MSGTYPES (RTM_MAX + 1 - RTM_BASE)
+#define RTM_NR_FAMILIES (RTM_NR_MSGTYPES >> 2)
 #define RTM_FAM(cmd)    (((cmd) - RTM_BASE) >> 2)
 
 /* 
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 58a981806268..5fb70cfa1085 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -86,7 +86,7 @@ struct sock *rtnl;
 
 struct rtnetlink_link * rtnetlink_links[NPROTO];
 
-static const int rtm_min[(RTM_MAX+1-RTM_BASE)/4] =
+static const int rtm_min[RTM_NR_FAMILIES] =
 {
         [RTM_FAM(RTM_NEWLINK)]      = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
         [RTM_FAM(RTM_NEWADDR)]      = NLMSG_LENGTH(sizeof(struct ifaddrmsg)),
@@ -102,7 +102,7 @@ static const int rtm_min[(RTM_MAX+1-RTM_BASE)/4] =
         [RTM_FAM(RTM_GETANYCAST)]   = NLMSG_LENGTH(sizeof(struct rtgenmsg)),
 };
 
-static const int rta_max[(RTM_MAX+1-RTM_BASE)/4] =
+static const int rta_max[RTM_NR_FAMILIES] =
 {
         [RTM_FAM(RTM_NEWLINK)]      = IFLA_MAX,
         [RTM_FAM(RTM_NEWADDR)]      = IFA_MAX,
@@ -641,7 +641,7 @@ static void rtnetlink_rcv(struct sock *sk, int len)
         } while (rtnl && rtnl->sk_receive_queue.qlen);
 }
 
-static struct rtnetlink_link link_rtnetlink_table[RTM_MAX-RTM_BASE+1] =
+static struct rtnetlink_link link_rtnetlink_table[RTM_NR_MSGTYPES] =
 {
         [RTM_GETLINK  - RTM_BASE] = { .dumpit = rtnetlink_dump_ifinfo },
         [RTM_SETLINK  - RTM_BASE] = { .doit   = do_setlink            },
diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
index c2a0346f423b..e6e23eb14428 100644
--- a/net/decnet/dn_dev.c
+++ b/net/decnet/dn_dev.c
@@ -1411,21 +1411,22 @@ static struct file_operations dn_dev_seq_fops = {
 
 #endif /* CONFIG_PROC_FS */
 
-static struct rtnetlink_link dnet_rtnetlink_table[RTM_MAX-RTM_BASE+1] = 
+static struct rtnetlink_link dnet_rtnetlink_table[RTM_NR_MSGTYPES] =
 {
-         [4] = { .doit   = dn_dev_rtm_newaddr,  },
-         [5] = { .doit   = dn_dev_rtm_deladdr,  },
-         [6] = { .dumpit = dn_dev_dump_ifaddr,  },
-
+        [RTM_NEWADDR  - RTM_BASE] = { .doit     = dn_dev_rtm_newaddr,   },
+        [RTM_DELADDR  - RTM_BASE] = { .doit     = dn_dev_rtm_deladdr,   },
+        [RTM_GETADDR  - RTM_BASE] = { .dumpit   = dn_dev_dump_ifaddr,   },
 #ifdef CONFIG_DECNET_ROUTER
-         [8] = { .doit   = dn_fib_rtm_newroute, },
-         [9] = { .doit   = dn_fib_rtm_delroute, },
-        [10] = { .doit   = dn_cache_getroute, .dumpit = dn_fib_dump, },
-        [16] = { .doit   = dn_fib_rtm_newrule, },
-        [17] = { .doit   = dn_fib_rtm_delrule, },
-        [18] = { .dumpit = dn_fib_dump_rules,  },
+        [RTM_NEWROUTE - RTM_BASE] = { .doit     = dn_fib_rtm_newroute,  },
+        [RTM_DELROUTE - RTM_BASE] = { .doit     = dn_fib_rtm_delroute,  },
+        [RTM_GETROUTE - RTM_BASE] = { .doit     = dn_cache_getroute,
+                                      .dumpit   = dn_fib_dump,          },
+        [RTM_NEWRULE  - RTM_BASE] = { .doit     = dn_fib_rtm_newrule,   },
+        [RTM_DELRULE  - RTM_BASE] = { .doit     = dn_fib_rtm_delrule,   },
+        [RTM_GETRULE  - RTM_BASE] = { .dumpit   = dn_fib_dump_rules,    },
 #else
-        [10] = { .doit   = dn_cache_getroute, .dumpit = dn_cache_dump, },
+        [RTM_GETROUTE - RTM_BASE] = { .doit     = dn_cache_getroute,
+                                      .dumpit   = dn_cache_dump,        
 #endif
 
 };
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index eea7ef010776..abbc6d5c183e 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1107,17 +1107,18 @@ static void rtmsg_ifa(int event, struct in_ifaddr* ifa)
         }
 }
 
-static struct rtnetlink_link inet_rtnetlink_table[RTM_MAX - RTM_BASE + 1] = {
-         [4] = { .doit   = inet_rtm_newaddr,  },
-         [5] = { .doit   = inet_rtm_deladdr,  },
-         [6] = { .dumpit = inet_dump_ifaddr,  },
-         [8] = { .doit   = inet_rtm_newroute, },
-         [9] = { .doit   = inet_rtm_delroute, },
-        [10] = { .doit   = inet_rtm_getroute, .dumpit = inet_dump_fib, },
+static struct rtnetlink_link inet_rtnetlink_table[RTM_NR_MSGTYPES] = {
+        [RTM_NEWADDR  - RTM_BASE] = { .doit     = inet_rtm_newaddr,     },
+        [RTM_DELADDR  - RTM_BASE] = { .doit     = inet_rtm_deladdr,     },
+        [RTM_GETADDR  - RTM_BASE] = { .dumpit   = inet_dump_ifaddr,     },
+        [RTM_NEWROUTE - RTM_BASE] = { .doit     = inet_rtm_newroute,    },
+        [RTM_DELROUTE - RTM_BASE] = { .doit     = inet_rtm_delroute,    },
+        [RTM_GETROUTE - RTM_BASE] = { .doit     = inet_rtm_getroute,
+                                      .dumpit   = inet_dump_fib,        },
 #ifdef CONFIG_IP_MULTIPLE_TABLES
-        [16] = { .doit   = inet_rtm_newrule, },
-        [17] = { .doit   = inet_rtm_delrule, },
-        [18] = { .dumpit = inet_dump_rules,  },
+        [RTM_NEWRULE  - RTM_BASE] = { .doit     = inet_rtm_newrule,     },
+        [RTM_DELRULE  - RTM_BASE] = { .doit     = inet_rtm_delrule,     },
+        [RTM_GETRULE  - RTM_BASE] = { .dumpit   = inet_dump_rules,      },
 #endif
 };
 
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 7196ac2f2d16..7744a2592693 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -3076,7 +3076,7 @@ static void inet6_prefix_notify(int event, struct inet6_dev *idev,
         netlink_broadcast(rtnl, skb, 0, RTMGRP_IPV6_PREFIX, GFP_ATOMIC);
 }
 
-static struct rtnetlink_link inet6_rtnetlink_table[RTM_MAX - RTM_BASE + 1] = {
+static struct rtnetlink_link inet6_rtnetlink_table[RTM_NR_MSGTYPES] = {
         [RTM_GETLINK - RTM_BASE] = { .dumpit    = inet6_dump_ifinfo, },
         [RTM_NEWADDR - RTM_BASE] = { .doit      = inet6_rtm_newaddr, },
         [RTM_DELADDR - RTM_BASE] = { .doit      = inet6_rtm_deladdr, },