Imported Upstream version 16.11

[deb_dpdk.git] / drivers / net / thunderx / base / nicvf_bsvf.h

diff --git a/drivers/net/thunderx/base/nicvf_bsvf.h b/drivers/net/thunderx/base/nicvf_bsvf.h
new file mode 100644 (file)
index 0000000..5d5a25e
--- /dev/null
+++ b/drivers/net/thunderx/base/nicvf_bsvf.h
@@ -0,0 +1,76 @@
+/*
+ *   BSD LICENSE
+ *
+ *   Copyright (C) Cavium networks Ltd. 2016.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Cavium networks nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __THUNDERX_NICVF_BSVF_H__
+#define __THUNDERX_NICVF_BSVF_H__
+
+#include <sys/queue.h>
+
+struct nicvf;
+
+/**
+ * The base queue structure to hold secondary qsets.
+ */
+struct svf_entry {
+       SIMPLEQ_ENTRY(svf_entry) next; /**< Next element's pointer */
+       struct nicvf *vf;              /**< Holder of a secondary qset */
+};
+
+/**
+ * Enqueue new entry to secondary qsets.
+ *
+ * @param entry
+ *   Entry to be enqueued.
+ */
+void
+nicvf_bsvf_push(struct svf_entry *entry);
+
+/**
+ * Dequeue an entry from secondary qsets.
+ *
+ * @return
+ *   Dequeued entry.
+ */
+struct svf_entry *
+nicvf_bsvf_pop(void);
+
+/**
+ * Check if the queue of secondary qsets is empty.
+ *
+ * @return
+ *   0 on non-empty
+ *   otherwise empty
+ */
+int
+nicvf_bsvf_empty(void);
+
+#endif /* __THUNDERX_NICVF_BSVF_H__  */