netfilter: fix Kconfig dependencies

Fix dependencies of netfilter realm match: it depends on NET_CLS_ROUTE,
which itself depends on NET_SCHED; this dependency is missing from netfilter.

Since matching on realms is also useful without having NET_SCHED enabled and
the option really only controls whether the tclassid member is included in
route and dst entries, rename the config option to IP_ROUTE_CLASSID and move
it outside of traffic scheduling context to get rid of the NET_SCHED dependeny.

Reported-by: Vladis Kletnieks <Valdis.Kletnieks@vt.edu>
Signed-off-by: Patrick McHardy <kaber@trash.net>

3 files changed, 3 insertions, 6 deletions

diff --git a/net/sched/Kconfig b/net/sched/Kconfig
index a36270a994d7..4b753ef70bb7 100644
--- a/net/sched/Kconfig
+++ b/net/sched/Kconfig
@@ -243,7 +243,7 @@ config NET_CLS_TCINDEX
 
 config NET_CLS_ROUTE4
         tristate "Routing decision (ROUTE)"
-        select NET_CLS_ROUTE
+        select IP_ROUTE_CLASSID
         select NET_CLS
         ---help---
           If you say Y here, you will be able to classify packets
@@ -252,9 +252,6 @@ config NET_CLS_ROUTE4
           To compile this code as a module, choose M here: the
           module will be called cls_route.
 
-config NET_CLS_ROUTE
-        bool
-
 config NET_CLS_FW
         tristate "Netfilter mark (FW)"
         select NET_CLS
diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c
index 5b271a18bc3a..a3b293d22c66 100644
--- a/net/sched/cls_flow.c
+++ b/net/sched/cls_flow.c
@@ -276,7 +276,7 @@ fallback:
 
 static u32 flow_get_rtclassid(const struct sk_buff *skb)
 {
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
         if (skb_dst(skb))
                 return skb_dst(skb)->tclassid;
 #endif
diff --git a/net/sched/em_meta.c b/net/sched/em_meta.c
index 34da5e29ea1a..0d66e58f26d8 100644
--- a/net/sched/em_meta.c
+++ b/net/sched/em_meta.c
@@ -255,7 +255,7 @@ META_COLLECTOR(int_rtclassid)
         if (unlikely(skb_dst(skb) == NULL))
                 *err = -1;
         else
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
                 dst->value = skb_dst(skb)->tclassid;
 #else
                 dst->value = 0;