[PATCH V2 1/4] Add revision field for xt_entry_target

[Zhang Chunyu <zhangcy@cn.fujitsu.com>]

From: zhangcy <zhangcy@cn.fujitsu.com>

This filed is useful if we want to add TARGET which
has revision for arptables rules.

Also make sure xt_entry_target is consistent with
the definition in kernel.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Zhang Chunyu <zhangcy@cn.fujitsu.com>
---
 arptables.c                              | 2 ++
 extensions/arpt_CLASSIFY.c               | 1 +
 extensions/arpt_mangle.c                 | 1 +
 extensions/arpt_standard.c               | 1 +
 include/arptables.h                      | 6 ++++++
 include/linux/netfilter_arp/arp_tables.h | 3 ++-
 6 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/arptables.c b/arptables.c
index 845e226..3f24ef1 100644
--- a/arptables.c
+++ b/arptables.c
@@ -2067,6 +2067,7 @@ int do_command(int argc, char *argv[], char **table, arptc_handle_t *handle)
 				target->t->u.target_size = size;
 				strncpy(target->t->u.user.name, jumpto, sizeof(target->t->u.user.name));
 				target->t->u.user.name[sizeof(target->t->u.user.name)-1] = '\0';
+				target->t->u.user.revision = target->revision;
 /*
 				target->init(target->t, &fw.nfcache);
 */
@@ -2391,6 +2392,7 @@ int do_command(int argc, char *argv[], char **table, arptc_handle_t *handle)
 			target->t = fw_calloc(1, size);
 			target->t->u.target_size = size;
 			strcpy(target->t->u.user.name, jumpto);
+			target->t->u.user.revision = target->revision;
 			target->init(target->t);
 		}
 
diff --git a/extensions/arpt_CLASSIFY.c b/extensions/arpt_CLASSIFY.c
index cb5770b..7893aed 100644
--- a/extensions/arpt_CLASSIFY.c
+++ b/extensions/arpt_CLASSIFY.c
@@ -105,6 +105,7 @@ struct arptables_target classify
 	ARPTABLES_VERSION,
 	ARPT_ALIGN(sizeof(struct xt_classify_target_info)),
 	ARPT_ALIGN(sizeof(struct xt_classify_target_info)),
+	0,
 	&help,
 	&init,
 	&parse,
diff --git a/extensions/arpt_mangle.c b/extensions/arpt_mangle.c
index c38fc16..502fc2b 100644
--- a/extensions/arpt_mangle.c
+++ b/extensions/arpt_mangle.c
@@ -199,6 +199,7 @@ struct arptables_target change
     ARPTABLES_VERSION,
     ARPT_ALIGN(sizeof(struct arpt_mangle)),
     ARPT_ALIGN(sizeof(struct arpt_mangle)),
+	0,
     &help,
     &init,
     &parse,
diff --git a/extensions/arpt_standard.c b/extensions/arpt_standard.c
index cb3891d..c647316 100644
--- a/extensions/arpt_standard.c
+++ b/extensions/arpt_standard.c
@@ -54,6 +54,7 @@ struct arptables_target standard
     ARPTABLES_VERSION,
     ARPT_ALIGN(sizeof(int)),
     ARPT_ALIGN(sizeof(int)),
+	0,
     &help,
     &init,
     &parse,
diff --git a/include/arptables.h b/include/arptables.h
index 820b664..82e6e9a 100644
--- a/include/arptables.h
+++ b/include/arptables.h
@@ -32,6 +32,9 @@ struct arptables_match
 	/* Size of match data relevent for userspace comparison purposes */
 	size_t userspacesize;
 
+	/* Revision of target (0 by default). */
+	u_int8_t revision;
+
 	/* Function which prints out usage message. */
 	void (*help)(void);
 
@@ -81,6 +84,9 @@ struct arptables_target
 	/* Size of target data relevent for userspace comparison purposes */
 	size_t userspacesize;
 
+	/* Revision of target (0 by default). */
+	u_int8_t revision;
+
 	/* Function which prints out usage message. */
 	void (*help)(void);
 
diff --git a/include/linux/netfilter_arp/arp_tables.h b/include/linux/netfilter_arp/arp_tables.h
index 0acda66..0bf2457 100644
--- a/include/linux/netfilter_arp/arp_tables.h
+++ b/include/linux/netfilter_arp/arp_tables.h
@@ -19,7 +19,7 @@
 
 #include <linux/netfilter_arp.h>
 
-#define ARPT_FUNCTION_MAXNAMELEN 30
+#define ARPT_FUNCTION_MAXNAMELEN 29
 #define ARPT_TABLE_MAXNAMELEN 32
 
 #define ARPT_DEV_ADDR_LEN_MAX 16
@@ -69,6 +69,7 @@ struct arpt_entry_target
 
 			/* Used by userspace */
 			char name[ARPT_FUNCTION_MAXNAMELEN];
+			u_int8_t revision;
 		} user;
 		struct {
 			u_int16_t target_size;
-- 
1.7.12.4