libxt_NFQUEUE: add mutual exclusion between qnum and qbal

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>

diff --git a/extensions/libxt_NFQUEUE.c b/extensions/libxt_NFQUEUE.c
index 71ead8d6d985a1fd538d37b0e2b5a737ff4c95c2..e47b586c8175900033c50dd7601be6da120c3b7f 100644 (file)
--- 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,
 };