net: Put flowi_* prefix on AF independent members of struct flowi

I intend to turn struct flowi into a union of AF specific flowi
structs.  There will be a common structure that each variant includes
first, much like struct sock_common.

This is the first step to move in that direction.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index 1771ce6..3fde7f2 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -353,10 +353,12 @@
 			daddr = icmp_param->replyopts.faddr;
 	}
 	{
-		struct flowi fl = { .fl4_dst= daddr,
-				    .fl4_src = rt->rt_spec_dst,
-				    .fl4_tos = RT_TOS(ip_hdr(skb)->tos),
-				    .proto = IPPROTO_ICMP };
+		struct flowi fl = {
+			.fl4_dst = daddr,
+			.fl4_src = rt->rt_spec_dst,
+			.fl4_tos = RT_TOS(ip_hdr(skb)->tos),
+			.flowi_proto = IPPROTO_ICMP,
+		};
 		security_skb_classify_flow(skb, &fl);
 		rt = ip_route_output_key(net, &fl);
 		if (IS_ERR(rt))
@@ -381,7 +383,7 @@
 			    param->replyopts.faddr : iph->saddr),
 		.fl4_src = saddr,
 		.fl4_tos = RT_TOS(tos),
-		.proto = IPPROTO_ICMP,
+		.flowi_proto = IPPROTO_ICMP,
 		.fl_icmp_type = type,
 		.fl_icmp_code = code,
 	};