[PATCH nf-next v4 11/12] netfilter: nft_objref: add nft_objref_type offload

[wenxu]

From: wenxu <we...@ucloud.cn>

support offload for nft_objref_type

Signed-off-by: wenxu <we...@ucloud.cn>
---
v4: no change

 include/net/netfilter/nf_tables.h |  3 +++
 net/netfilter/nft_objref.c        | 15 +++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/include/net/netfilter/nf_tables.h 
b/include/net/netfilter/nf_tables.h
index 5cf71a0..b007dd9 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -1128,6 +1128,9 @@ struct nft_object_ops {
        int                             (*dump)(struct sk_buff *skb,
                                                struct nft_object *obj,
                                                bool reset);
+       int                             (*offload)(struct nft_offload_ctx *ctx,
+                                                  struct nft_flow_rule *flow,
+                                                  struct nft_object *obj);
        const struct nft_object_type    *type;
 };
 
diff --git a/net/netfilter/nft_objref.c b/net/netfilter/nft_objref.c
index bfd18d2..f71cf76 100644
--- a/net/netfilter/nft_objref.c
+++ b/net/netfilter/nft_objref.c
@@ -10,6 +10,7 @@
 #include <linux/netfilter.h>
 #include <linux/netfilter/nf_tables.h>
 #include <net/netfilter/nf_tables.h>
+#include <net/netfilter/nf_tables_offload.h>
 
 #define nft_objref_priv(expr)  *((struct nft_object **)nft_expr_priv(expr))
 
@@ -82,6 +83,18 @@ static void nft_objref_activate(const struct nft_ctx *ctx,
        obj->use++;
 }
 
+static int nft_objref_offload(struct nft_offload_ctx *ctx,
+                             struct nft_flow_rule *flow,
+                             const struct nft_expr *expr)
+{
+       struct nft_object *obj = nft_objref_priv(expr);
+
+       if (obj->ops->offload)
+               return obj->ops->offload(ctx, flow, obj);
+       else
+               return -EOPNOTSUPP;
+}
+
 static struct nft_expr_type nft_objref_type;
 static const struct nft_expr_ops nft_objref_ops = {
        .type           = &nft_objref_type,
@@ -91,6 +104,8 @@ static void nft_objref_activate(const struct nft_ctx *ctx,
        .activate       = nft_objref_activate,
        .deactivate     = nft_objref_deactivate,
        .dump           = nft_objref_dump,
+       .offload        = nft_objref_offload,
+       .offload_actions = nft_offload_action,
 };
 
 struct nft_objref_map {
-- 
1.8.3.1