netfilter: nfnetlink_log: fix per-rule qthreshold override

In NFLOG the per-rule qthreshold should overrides per-instance only
it is set. With current code, the per-rule qthreshold is 1 if not set
and it overrides the per-instance qthreshold.

This patch modifies the default xt_NFLOG threshold from 1 to
0. Thus a value of 0 means there is no per-rule setting and the instance
parameter has to apply.

Signed-off-by: Eric Leblond <eric@inl.fr>
Signed-off-by: Patrick McHardy <kaber@trash.net>

1 files changed, 4 insertions, 2 deletions

diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c
index fa49dc7fe100..580b837e44dd 100644
--- a/net/netfilter/nfnetlink_log.c
+++ b/net/netfilter/nfnetlink_log.c
@@ -590,8 +590,10 @@ nfulnl_log_packet(u_int8_t pf,
 
         qthreshold = inst->qthreshold;
         /* per-rule qthreshold overrides per-instance */
-        if (qthreshold > li->u.ulog.qthreshold)
-                qthreshold = li->u.ulog.qthreshold;
+        if (li->u.ulog.qthreshold)
+                if (qthreshold > li->u.ulog.qthreshold)
+                        qthreshold = li->u.ulog.qthreshold;
+
 
         switch (inst->copy_mode) {
         case NFULNL_COPY_META: