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-rw-r--r--net/xdp/xsk_queue.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/xdp/xsk_queue.h b/net/xdp/xsk_queue.h
index b936c46b1e16..4a9663aa7afe 100644
--- a/net/xdp/xsk_queue.h
+++ b/net/xdp/xsk_queue.h
@@ -307,6 +307,12 @@ static inline bool xskq_cons_is_full(struct xsk_queue *q)
q->nentries;
}
+static inline u32 xskq_cons_present_entries(struct xsk_queue *q)
+{
+ /* No barriers needed since data is not accessed */
+ return READ_ONCE(q->ring->producer) - READ_ONCE(q->ring->consumer);
+}
+
/* Functions for producers */
static inline u32 xskq_prod_nb_free(struct xsk_queue *q, u32 max)