nft: convert rule into a command state structure

This helps to reduce the code complexity to have one single common path
for printing, saving and looking up for the rule.

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 11 insertions, 5 deletions

diff --git a/iptables/nft-shared.h b/iptables/nft-shared.h
index 488ed632..e77b303d 100644
--- a/iptables/nft-shared.h
+++ b/iptables/nft-shared.h
@@ -50,6 +50,8 @@ struct nft_family_ops {
 	void (*parse_immediate)(struct iptables_command_state *cs);
 	void (*print_firewall)(struct nft_rule *r, unsigned int num,
 			       unsigned int format);
+	uint8_t (*save_firewall)(const struct iptables_command_state *cs,
+				 unsigned int format);
 	void (*post_parse)(int command, struct iptables_command_state *cs,
 			   struct xtables_args *args);
 };
@@ -79,22 +81,26 @@ bool is_same_interfaces(const char *a_iniface, const char *a_outiface,
 void parse_meta(struct nft_rule_expr *e, uint8_t key, char *iniface,
 		unsigned char *iniface_mask, char *outiface,
 		unsigned char *outiface_mask, uint8_t *invflags);
-const char *nft_parse_target(struct nft_rule *r, const void **targinfo,
-			     size_t *target_len);
 void print_proto(uint16_t proto, int invert);
 void get_cmp_data(struct nft_rule_expr_iter *iter,
 		  void *data, size_t dlen, bool *inv);
 void nft_rule_to_iptables_command_state(struct nft_rule *r,
 					struct iptables_command_state *cs);
-int print_matches(struct nft_rule *r, int format);
-int print_target(const char *targname, const void *targinfo,
-		 size_t target_len, int format);
 void print_num(uint64_t number, unsigned int format);
 void print_firewall_details(const struct iptables_command_state *cs,
 			    const char *targname, uint8_t flags,
 			    uint8_t invflags, uint8_t proto,
 			    const char *iniface, const char *outiface,
 			    unsigned int num, unsigned int format);
+void print_matches_and_target(struct iptables_command_state *cs,
+			      unsigned int format);
+void save_firewall_details(const struct iptables_command_state *cs,
+			   uint8_t invflags, uint16_t proto,
+			   const char *iniface,
+			   unsigned const char *iniface_mask,
+			   const char *outiface,
+			   unsigned const char *outiface_mask,
+			   unsigned int format);
 
 struct nft_family_ops *nft_family_ops_lookup(int family);