[PATCH nf-next v3 2/9] netfilter: nf_tables_offload: add offload_actions callback

[wenxu@xxxxxxxxx]

From: wenxu <wenxu@xxxxxxxxx>

There will be zero one or serval actions for some expr. such as
payload set and immediate. The one payload set action maybe split
to several offload entries. And only NFT_REG_VERDICT immediate
action has 1 offload entry

Signed-off-by: wenxu <wenxu@xxxxxxxxx>
---
v3: no change

 include/net/netfilter/nf_tables.h         | 7 ++++++-
 include/net/netfilter/nf_tables_offload.h | 2 --
 net/netfilter/nf_tables_offload.c         | 4 ++--
 net/netfilter/nft_immediate.c             | 2 +-
 4 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index 9b62456..9285df2 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -785,7 +785,7 @@ struct nft_expr_ops {
 	int				(*offload)(struct nft_offload_ctx *ctx,
 						   struct nft_flow_rule *flow,
 						   const struct nft_expr *expr);
-	u32				offload_flags;
+	int				(*offload_actions)(const struct nft_expr *expr);
 	const struct nft_expr_type	*type;
 	void				*data;
 };
@@ -794,6 +794,11 @@ struct nft_expr_ops {
 #define NFT_EXPR_SIZE(size)		(sizeof(struct nft_expr) + \
 					 ALIGN(size, __alignof__(struct nft_expr)))
 
+static inline int nft_offload_action(const struct nft_expr *expr)
+{
+	return 1;
+}
+
 /**
  *	struct nft_expr - nf_tables expression
  *
diff --git a/include/net/netfilter/nf_tables_offload.h b/include/net/netfilter/nf_tables_offload.h
index ad61958..275d014 100644
--- a/include/net/netfilter/nf_tables_offload.h
+++ b/include/net/netfilter/nf_tables_offload.h
@@ -58,8 +58,6 @@ struct nft_flow_rule {
 	struct flow_rule	*rule;
 };
 
-#define NFT_OFFLOAD_F_ACTION	(1 << 0)
-
 struct nft_rule;
 struct nft_flow_rule *nft_flow_rule_create(struct net *net, const struct nft_rule *rule);
 void nft_flow_rule_destroy(struct nft_flow_rule *flow);
diff --git a/net/netfilter/nf_tables_offload.c b/net/netfilter/nf_tables_offload.c
index 5c1fef7..33543f5 100644
--- a/net/netfilter/nf_tables_offload.c
+++ b/net/netfilter/nf_tables_offload.c
@@ -42,8 +42,8 @@ struct nft_flow_rule *nft_flow_rule_create(struct net *net, const struct nft_rul
 
 	expr = nft_expr_first(rule);
 	while (expr->ops && expr != nft_expr_last(rule)) {
-		if (expr->ops->offload_flags & NFT_OFFLOAD_F_ACTION)
-			num_actions++;
+		if (expr->ops->offload_actions)
+			num_actions += expr->ops->offload_actions(expr);
 
 		expr = nft_expr_next(expr);
 	}
diff --git a/net/netfilter/nft_immediate.c b/net/netfilter/nft_immediate.c
index ca2ae4b..391f699 100644
--- a/net/netfilter/nft_immediate.c
+++ b/net/netfilter/nft_immediate.c
@@ -163,7 +163,7 @@ static int nft_immediate_offload(struct nft_offload_ctx *ctx,
 	.dump		= nft_immediate_dump,
 	.validate	= nft_immediate_validate,
 	.offload	= nft_immediate_offload,
-	.offload_flags	= NFT_OFFLOAD_F_ACTION,
+	.offload_actions = nft_offload_action,
 };
 
 struct nft_expr_type nft_imm_type __read_mostly = {
-- 
1.8.3.1