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Message-Id: <1577267303-24780-6-git-send-email-wenxu@ucloud.cn>
Date: Wed, 25 Dec 2019 17:48:23 +0800
From: wenxu@...oud.cn
To: pablo@...filter.org, paulb@...lanox.com, netdev@...r.kernel.org
Cc: netfilter-devel@...r.kernel.org, jiri@...lanox.com
Subject: [PATCH net-next 5/5] netfilter: nf_flow_table_offload: add tunnel encap/decap action offload support
From: wenxu <wenxu@...oud.cn>
This patch add tunnel encap decap action offload in the flowtable
offload.
Signed-off-by: wenxu <wenxu@...oud.cn>
---
net/netfilter/nf_flow_table_offload.c | 47 +++++++++++++++++++++++++++++++++++
1 file changed, 47 insertions(+)
diff --git a/net/netfilter/nf_flow_table_offload.c b/net/netfilter/nf_flow_table_offload.c
index 93ff2e6..5fcb4bc 100644
--- a/net/netfilter/nf_flow_table_offload.c
+++ b/net/netfilter/nf_flow_table_offload.c
@@ -476,6 +476,45 @@ static void flow_offload_redirect(const struct flow_offload *flow,
dev_hold(rt->dst.dev);
}
+static void flow_offload_encap_tunnel(const struct flow_offload *flow,
+ enum flow_offload_tuple_dir dir,
+ struct nf_flow_rule *flow_rule)
+{
+ struct flow_action_entry *entry;
+ struct dst_entry *dst;
+
+ dst = flow->tuplehash[dir].tuple.dst_cache;
+ if (dst->lwtstate) {
+ struct ip_tunnel_info *tun_info;
+
+ tun_info = lwt_tun_info(dst->lwtstate);
+ if (tun_info && (tun_info->mode & IP_TUNNEL_INFO_TX)) {
+ entry = flow_action_entry_next(flow_rule);
+ entry->id = FLOW_ACTION_TUNNEL_ENCAP;
+ entry->tunnel = tun_info;
+ }
+ }
+}
+
+static void flow_offload_decap_tunnel(const struct flow_offload *flow,
+ enum flow_offload_tuple_dir dir,
+ struct nf_flow_rule *flow_rule)
+{
+ struct flow_action_entry *entry;
+ struct dst_entry *dst;
+
+ dst = flow->tuplehash[!dir].tuple.dst_cache;
+ if (dst->lwtstate) {
+ struct ip_tunnel_info *tun_info;
+
+ tun_info = lwt_tun_info(dst->lwtstate);
+ if (tun_info && (tun_info->mode & IP_TUNNEL_INFO_TX)) {
+ entry = flow_action_entry_next(flow_rule);
+ entry->id = FLOW_ACTION_TUNNEL_DECAP;
+ }
+ }
+}
+
int nf_flow_rule_route_ipv4(struct net *net, const struct flow_offload *flow,
enum flow_offload_tuple_dir dir,
struct nf_flow_rule *flow_rule)
@@ -496,6 +535,10 @@ int nf_flow_rule_route_ipv4(struct net *net, const struct flow_offload *flow,
flow->flags & FLOW_OFFLOAD_DNAT)
flow_offload_ipv4_checksum(net, flow, flow_rule);
+ flow_offload_decap_tunnel(flow, dir, flow_rule);
+
+ flow_offload_encap_tunnel(flow, dir, flow_rule);
+
flow_offload_redirect(flow, dir, flow_rule);
return 0;
@@ -519,6 +562,10 @@ int nf_flow_rule_route_ipv6(struct net *net, const struct flow_offload *flow,
flow_offload_port_dnat(net, flow, dir, flow_rule);
}
+ flow_offload_decap_tunnel(flow, dir, flow_rule);
+
+ flow_offload_encap_tunnel(flow, dir, flow_rule);
+
flow_offload_redirect(flow, dir, flow_rule);
return 0;
--
1.8.3.1
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