netdev - [PATCH 06/17] netfilter: nf_flow_table_offload: add IPv6 match description

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Message-Id: <20191209192638.71184-7-pablo@netfilter.org>
Date:   Mon,  9 Dec 2019 20:26:27 +0100
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     netfilter-devel@...r.kernel.org
Cc:     davem@...emloft.net, netdev@...r.kernel.org
Subject: [PATCH 06/17] netfilter: nf_flow_table_offload: add IPv6 match description

Add missing IPv6 matching description to flow_rule object.

Fixes: 5c27d8d76ce8 ("netfilter: nf_flow_table_offload: add IPv6 support")
Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
---
 net/netfilter/nf_flow_table_offload.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/net/netfilter/nf_flow_table_offload.c b/net/netfilter/nf_flow_table_offload.c
index dd78ae5441e9..c94ebad78c5c 100644
--- a/net/netfilter/nf_flow_table_offload.c
+++ b/net/netfilter/nf_flow_table_offload.c
@@ -28,6 +28,7 @@ struct nf_flow_key {
 	struct flow_dissector_key_basic			basic;
 	union {
 		struct flow_dissector_key_ipv4_addrs	ipv4;
+		struct flow_dissector_key_ipv6_addrs	ipv6;
 	};
 	struct flow_dissector_key_tcp			tcp;
 	struct flow_dissector_key_ports			tp;
@@ -57,6 +58,7 @@ static int nf_flow_rule_match(struct nf_flow_match *match,
 	NF_FLOW_DISSECTOR(match, FLOW_DISSECTOR_KEY_CONTROL, control);
 	NF_FLOW_DISSECTOR(match, FLOW_DISSECTOR_KEY_BASIC, basic);
 	NF_FLOW_DISSECTOR(match, FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
+	NF_FLOW_DISSECTOR(match, FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
 	NF_FLOW_DISSECTOR(match, FLOW_DISSECTOR_KEY_TCP, tcp);
 	NF_FLOW_DISSECTOR(match, FLOW_DISSECTOR_KEY_PORTS, tp);
 
@@ -69,9 +71,18 @@ static int nf_flow_rule_match(struct nf_flow_match *match,
 		key->ipv4.dst = tuple->dst_v4.s_addr;
 		mask->ipv4.dst = 0xffffffff;
 		break;
+       case AF_INET6:
+		key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
+		key->basic.n_proto = htons(ETH_P_IPV6);
+		key->ipv6.src = tuple->src_v6;
+		memset(&mask->ipv6.src, 0xff, sizeof(mask->ipv6.src));
+		key->ipv6.dst = tuple->dst_v6;
+		memset(&mask->ipv6.dst, 0xff, sizeof(mask->ipv6.dst));
+		break;
 	default:
 		return -EOPNOTSUPP;
 	}
+	match->dissector.used_keys |= BIT(key->control.addr_type);
 	mask->basic.n_proto = 0xffff;
 
 	switch (tuple->l4proto) {
@@ -96,7 +107,6 @@ static int nf_flow_rule_match(struct nf_flow_match *match,
 
 	match->dissector.used_keys |= BIT(FLOW_DISSECTOR_KEY_CONTROL) |
 				      BIT(FLOW_DISSECTOR_KEY_BASIC) |
-				      BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
 				      BIT(FLOW_DISSECTOR_KEY_PORTS);
 	return 0;
 }
-- 
2.11.0