conntrackd: add `-s queue' to display queue statistics

This patch re-introduces `-s queue' but now it displays generic
queue statistics.

# conntrackd -s queue
active queue objects:                      0

queue txqueue:
current elements:                          0
maximum elements:                 2147483647
not enough space errors:                   0

queue rsqueue:
current elements:                         72
maximum elements:                        128
not enough space errors:                   0

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/queue.h b/include/queue.h
index 89b00a8..d989402 100644
--- a/include/queue.h
+++ b/include/queue.h
@@ -32,6 +32,7 @@ struct evfd;
 #define QUEUE_NAMELEN	16
 
 struct queue {
+	struct list_head	list;
 	unsigned int		max_elems;
 	unsigned int		num_elems;
 	uint32_t		flags;
@@ -45,6 +46,7 @@ struct queue {
 struct queue *queue_create(const char *name,
 			   int max_objects, unsigned int flags);
 void queue_destroy(struct queue *b);
+void queue_stats_show(int fd);
 unsigned int queue_len(const struct queue *b);
 int queue_add(struct queue *b, struct queue_node *n);
 int queue_del(struct queue_node *n);