X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;ds=sidebyside;f=lib%2Flibrte_kni%2Frte_kni_fifo.h;h=c7cd5c26cdf56b261635fa433fbfaa323ec48761;hb=refs%2Fchanges%2F65%2F7065%2F1;hp=8cb858739d22c8e9b706a805c1c5be779c35ae5d;hpb=98b330d5d42b569850026263bbda81511c583252;p=deb_dpdk.git

diff --git a/lib/librte_kni/rte_kni_fifo.h b/lib/librte_kni/rte_kni_fifo.h
index 8cb85873..c7cd5c26 100644
--- a/lib/librte_kni/rte_kni_fifo.h
+++ b/lib/librte_kni/rte_kni_fifo.h
@@ -91,3 +91,12 @@ kni_fifo_get(struct rte_kni_fifo *fifo, void **data, unsigned num)
 	fifo->read = new_read;
 	return i;
 }
+
+/**
+ * Get the num of elements in the fifo
+ */
+static inline uint32_t
+kni_fifo_count(struct rte_kni_fifo *fifo)
+{
+	return (fifo->len + fifo->write - fifo->read) & (fifo->len - 1);
+}