netfilter: nf_tables: add support for multi family tables

Add support to register chains to multiple hooks for different address
families for mixed IPv4/IPv6 tables.

Signed-off-by: Patrick McHardy <kaber@trash.net>
diff --git a/net/ipv4/netfilter/nf_tables_arp.c b/net/ipv4/netfilter/nf_tables_arp.c
index 31bb778..36d27fc 100644
--- a/net/ipv4/netfilter/nf_tables_arp.c
+++ b/net/ipv4/netfilter/nf_tables_arp.c
@@ -32,6 +32,7 @@
 	.family		= NFPROTO_ARP,
 	.nhooks		= NF_ARP_NUMHOOKS,
 	.owner		= THIS_MODULE,
+	.nops		= 1,
 	.hooks		= {
 		[NF_ARP_IN]		= nft_do_chain_arp,
 		[NF_ARP_OUT]		= nft_do_chain_arp,
diff --git a/net/ipv4/netfilter/nf_tables_ipv4.c b/net/ipv4/netfilter/nf_tables_ipv4.c
index ed7e15a..177c3bc 100644
--- a/net/ipv4/netfilter/nf_tables_ipv4.c
+++ b/net/ipv4/netfilter/nf_tables_ipv4.c
@@ -52,6 +52,7 @@
 	.family		= NFPROTO_IPV4,
 	.nhooks		= NF_INET_NUMHOOKS,
 	.owner		= THIS_MODULE,
+	.nops		= 1,
 	.hooks		= {
 		[NF_INET_LOCAL_IN]	= nft_do_chain_ipv4,
 		[NF_INET_LOCAL_OUT]	= nft_ipv4_output,