[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/ipv4/netfilter/iptable_mangle.c b/net/ipv4/netfilter/iptable_mangle.c
index b91f358..62d4ccc 100644
--- a/net/ipv4/netfilter/iptable_mangle.c
+++ b/net/ipv4/netfilter/iptable_mangle.c
@@ -132,7 +132,7 @@
 	unsigned int ret;
 	u_int8_t tos;
 	__be32 saddr, daddr;
-	unsigned long nfmark;
+	u_int32_t mark;
 
 	/* root is playing with raw sockets. */
 	if ((*pskb)->len < sizeof(struct iphdr)
@@ -143,7 +143,7 @@
 	}
 
 	/* Save things which could affect route */
-	nfmark = (*pskb)->nfmark;
+	mark = (*pskb)->mark;
 	saddr = (*pskb)->nh.iph->saddr;
 	daddr = (*pskb)->nh.iph->daddr;
 	tos = (*pskb)->nh.iph->tos;
@@ -154,7 +154,7 @@
 	    && ((*pskb)->nh.iph->saddr != saddr
 		|| (*pskb)->nh.iph->daddr != daddr
 #ifdef CONFIG_IP_ROUTE_FWMARK
-		|| (*pskb)->nfmark != nfmark
+		|| (*pskb)->mark != mark
 #endif
 		|| (*pskb)->nh.iph->tos != tos))
 		if (ip_route_me_harder(pskb, RTN_UNSPEC))