[PATCH 21/24] libxt_NFQUEUE: add mutual exclusion between qnum and qbal

[Jan Engelhardt <jengelh@medozas.de>]

Only one is printed on save operation, which leads me to believe that
only one is meant to be used. The manpage seems to corroborate.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
---
 extensions/libxt_NFQUEUE.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/extensions/libxt_NFQUEUE.c b/extensions/libxt_NFQUEUE.c
index 71ead8d..e47b586 100644
--- a/extensions/libxt_NFQUEUE.c
+++ b/extensions/libxt_NFQUEUE.c
@@ -13,6 +13,8 @@ enum {
 	O_QUEUE_NUM = 0,
 	O_QUEUE_BALANCE,
 	O_QUEUE_BYPASS,
+	F_QUEUE_NUM     = 1 << O_QUEUE_NUM,
+	F_QUEUE_BALANCE = 1 << O_QUEUE_BALANCE,
 };
 
 static void NFQUEUE_help(void)
@@ -41,9 +43,10 @@ static void NFQUEUE_help_v2(void)
 #define s struct xt_NFQ_info
 static const struct xt_option_entry NFQUEUE_opts[] = {
 	{.name = "queue-num", .id = O_QUEUE_NUM, .type = XTTYPE_UINT16,
-	 .flags = XTOPT_PUT, XTOPT_POINTER(s, queuenum)},
+	 .flags = XTOPT_PUT, XTOPT_POINTER(s, queuenum),
+	 .excl = F_QUEUE_BALANCE},
 	{.name = "queue-balance", .id = O_QUEUE_BALANCE,
-	 .type = XTTYPE_UINT16RC},
+	 .type = XTTYPE_UINT16RC, .excl = F_QUEUE_NUM},
 	{.name = "queue-bypass", .id = O_QUEUE_BYPASS, .type = XTTYPE_NONE},
 	XTOPT_TABLEEND,
 };
-- 
1.7.3.4