zebra: add IPTABLE_ADD and IPTABLE_DEL commands in zapi

Those messages permit a remote daemon to configure an iptable entry. A
structure is defined that maps to an iptable entry. More specifically,
this structure proposes to associate fwmark, and a table ID.
Adding to the configuration, the initialisation of iptables hash list is
done into zebra netnamespace. Also a hook for notifying the sender that
the iptables has been correctly set is done.

Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>

1 files changed, 41 insertions, 0 deletions

diff --git a/zebra/zebra_pbr.h b/zebra/zebra_pbr.h
index 9f25c6f43..6de33ee2e 100644
--- a/zebra/zebra_pbr.h
+++ b/zebra/zebra_pbr.h
@@ -148,6 +148,35 @@ struct zebra_pbr_ipset_entry {
 	struct zebra_pbr_ipset *backpointer;
 };
 
+/*
+ * An IPTables Action
+ *
+ * This is a filter mapped on ipset entries
+ */
+struct zebra_pbr_iptable {
+	/*
+	 * Originating zclient sock fd, so we can know who to send
+	 * back to.
+	 */
+	int sock;
+
+	uint32_t unique;
+
+	/* include ipset type
+	 */
+	uint32_t type;
+
+	/* include which IP is to be filtered
+	 */
+	uint32_t filter_bm;
+
+	uint32_t fwmark;
+
+	uint32_t action;
+
+	char ipset_name[ZEBRA_IPSET_NAME_SIZE];
+};
+
 void zebra_pbr_add_rule(struct zebra_ns *zns, struct zebra_pbr_rule *rule);
 void zebra_pbr_del_rule(struct zebra_ns *zns, struct zebra_pbr_rule *rule);
 void zebra_pbr_create_ipset(struct zebra_ns *zns,
@@ -161,6 +190,11 @@ void zebra_pbr_add_ipset_entry(struct zebra_ns *zns,
 void zebra_pbr_del_ipset_entry(struct zebra_ns *zns,
 			       struct zebra_pbr_ipset_entry *ipset);
 
+void zebra_pbr_add_iptable(struct zebra_ns *zns,
+			   struct zebra_pbr_iptable *iptable);
+void zebra_pbr_del_iptable(struct zebra_ns *zns,
+			   struct zebra_pbr_iptable *iptable);
+
 /*
  * Install specified rule for a specific interface.
  * It is possible that the user-defined sequence number and the one in the
@@ -196,6 +230,9 @@ extern void kernel_pbr_ipset_entry_add_del_status(
 				struct zebra_pbr_ipset_entry *ipset,
 				enum southbound_results res);
 
+extern void kernel_pbr_iptable_add_del_status(struct zebra_pbr_iptable *iptable,
+			      enum southbound_results res);
+
 /*
  * Handle rule delete notification from kernel.
  */
@@ -220,4 +257,8 @@ extern void zebra_pbr_ipset_entry_free(void *arg);
 extern uint32_t zebra_pbr_ipset_entry_hash_key(void *arg);
 extern int zebra_pbr_ipset_entry_hash_equal(const void *arg1, const void *arg2);
 
+extern void zebra_pbr_iptable_free(void *arg);
+extern uint32_t zebra_pbr_iptable_hash_key(void *arg);
+extern int zebra_pbr_iptable_hash_equal(const void *arg1, const void *arg2);
+
 #endif /* _ZEBRA_PBR_H */