[NET_SCHED]: Use typeful attribute parsing helpers

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/cls_fw.c b/net/sched/cls_fw.c
index 61ebe25..b75696d 100644
--- a/net/sched/cls_fw.c
+++ b/net/sched/cls_fw.c
@@ -203,7 +203,7 @@
 	if (tb[TCA_FW_CLASSID]) {
 		if (nla_len(tb[TCA_FW_CLASSID]) != sizeof(u32))
 			goto errout;
-		f->res.classid = *(u32*)nla_data(tb[TCA_FW_CLASSID]);
+		f->res.classid = nla_get_u32(tb[TCA_FW_CLASSID]);
 		tcf_bind_filter(tp, &f->res, base);
 	}
 
@@ -218,7 +218,7 @@
 	if (tb[TCA_FW_MASK]) {
 		if (nla_len(tb[TCA_FW_MASK]) != sizeof(u32))
 			goto errout;
-		mask = *(u32*)nla_data(tb[TCA_FW_MASK]);
+		mask = nla_get_u32(tb[TCA_FW_MASK]);
 		if (mask != head->mask)
 			goto errout;
 	} else if (head->mask != 0xFFFFFFFF)
@@ -264,7 +264,7 @@
 		if (tb[TCA_FW_MASK]) {
 			if (nla_len(tb[TCA_FW_MASK]) != sizeof(u32))
 				return -EINVAL;
-			mask = *(u32*)nla_data(tb[TCA_FW_MASK]);
+			mask = nla_get_u32(tb[TCA_FW_MASK]);
 		}
 
 		head = kzalloc(sizeof(struct fw_head), GFP_KERNEL);