diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 3377ca0..0fbedca 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -482,7 +482,7 @@
 
 int tcf_exts_validate(struct tcf_proto *tp, struct nlattr **tb,
 		  struct nlattr *rate_tlv, struct tcf_exts *exts,
-		  struct tcf_ext_map *map)
+		  const struct tcf_ext_map *map)
 {
 	memset(exts, 0, sizeof(*exts));
 
@@ -535,7 +535,7 @@
 EXPORT_SYMBOL(tcf_exts_change);
 
 int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts,
-	      struct tcf_ext_map *map)
+		  const struct tcf_ext_map *map)
 {
 #ifdef CONFIG_NET_CLS_ACT
 	if (map->action && exts->action) {
@@ -571,7 +571,7 @@
 
 
 int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts,
-			struct tcf_ext_map *map)
+			const struct tcf_ext_map *map)
 {
 #ifdef CONFIG_NET_CLS_ACT
 	if (exts->action)
diff --git a/net/sched/cls_basic.c b/net/sched/cls_basic.c
index bfb4342..956915c 100644
--- a/net/sched/cls_basic.c
+++ b/net/sched/cls_basic.c
@@ -35,7 +35,7 @@
 	struct list_head	link;
 };
 
-static struct tcf_ext_map basic_ext_map = {
+static const struct tcf_ext_map basic_ext_map = {
 	.action = TCA_BASIC_ACT,
 	.police = TCA_BASIC_POLICE
 };
diff --git a/net/sched/cls_fw.c b/net/sched/cls_fw.c
index 436a6e7..b0f90e5 100644
--- a/net/sched/cls_fw.c
+++ b/net/sched/cls_fw.c
@@ -47,7 +47,7 @@
 	struct tcf_exts		exts;
 };
 
-static struct tcf_ext_map fw_ext_map = {
+static const struct tcf_ext_map fw_ext_map = {
 	.action = TCA_FW_ACT,
 	.police = TCA_FW_POLICE
 };
diff --git a/net/sched/cls_route.c b/net/sched/cls_route.c
index f7e7d39..784dcb8 100644
--- a/net/sched/cls_route.c
+++ b/net/sched/cls_route.c
@@ -62,7 +62,7 @@
 
 #define ROUTE4_FAILURE ((struct route4_filter*)(-1L))
 
-static struct tcf_ext_map route_ext_map = {
+static const struct tcf_ext_map route_ext_map = {
 	.police = TCA_ROUTE4_POLICE,
 	.action = TCA_ROUTE4_ACT
 };
diff --git a/net/sched/cls_tcindex.c b/net/sched/cls_tcindex.c
index ee60b2d..7a7bff5 100644
--- a/net/sched/cls_tcindex.c
+++ b/net/sched/cls_tcindex.c
@@ -55,7 +55,7 @@
 	int fall_through;	/* 0: only classify if explicit match */
 };
 
-static struct tcf_ext_map tcindex_ext_map = {
+static const struct tcf_ext_map tcindex_ext_map = {
 	.police = TCA_TCINDEX_POLICE,
 	.action = TCA_TCINDEX_ACT
 };
diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
index e8a7756..b18fa95 100644
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -82,7 +82,7 @@
 	u32			hgenerator;
 };
 
-static struct tcf_ext_map u32_ext_map = {
+static const struct tcf_ext_map u32_ext_map = {
 	.action = TCA_U32_ACT,
 	.police = TCA_U32_POLICE
 };