[NET]: Turn nfmark into generic mark

nfmark is being used in various subsystems and has become
the defacto mark field for all kinds of packets. Therefore
it makes sense to rename it to `mark' and remove the
dependency on CONFIG_NETFILTER.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/netfilter/xt_CONNMARK.c b/net/netfilter/xt_CONNMARK.c
index c01524f..67ed531 100644
--- a/net/netfilter/xt_CONNMARK.c
+++ b/net/netfilter/xt_CONNMARK.c
@@ -42,7 +42,7 @@
 {
 	const struct xt_connmark_target_info *markinfo = targinfo;
 	u_int32_t diff;
-	u_int32_t nfmark;
+	u_int32_t mark;
 	u_int32_t newmark;
 	u_int32_t ctinfo;
 	u_int32_t *ctmark = nf_ct_get_mark(*pskb, &ctinfo);
@@ -62,7 +62,7 @@
 			break;
 		case XT_CONNMARK_SAVE:
 			newmark = (*ctmark & ~markinfo->mask) |
-				  ((*pskb)->nfmark & markinfo->mask);
+				  ((*pskb)->mark & markinfo->mask);
 			if (*ctmark != newmark) {
 				*ctmark = newmark;
 #if defined(CONFIG_IP_NF_CONNTRACK) || defined(CONFIG_IP_NF_CONNTRACK_MODULE)
@@ -73,10 +73,10 @@
 			}
 			break;
 		case XT_CONNMARK_RESTORE:
-			nfmark = (*pskb)->nfmark;
-			diff = (*ctmark ^ nfmark) & markinfo->mask;
+			mark = (*pskb)->mark;
+			diff = (*ctmark ^ mark) & markinfo->mask;
 			if (diff != 0)
-				(*pskb)->nfmark = nfmark ^ diff;
+				(*pskb)->mark = mark ^ diff;
 			break;
 		}
 	}