Imported Upstream version 16.04

Change-Id: I77eadcd8538a9122e4773cbe55b24033dc451757
Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>

1 files changed, 148 insertions, 0 deletions

diff --git a/examples/vhost_xen/xen_vhost.h b/examples/vhost_xen/xen_vhost.h
new file mode 100644
index 00000000..2fc304c7
--- /dev/null
+++ b/examples/vhost_xen/xen_vhost.h
@@ -0,0 +1,148 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *   All rights reserved.
+ *
+ *   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 Intel Corporation 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 _XEN_VHOST_H_
+#define _XEN_VHOST_H_
+
+#include <stdint.h>
+
+#include <rte_ether.h>
+
+#include "virtio-net.h"
+
+#define RTE_LOGTYPE_XENHOST RTE_LOGTYPE_USER1
+
+#define XEN_VM_ROOTNODE_FMT  "/local/domain/%d/control/dpdk"
+#define XEN_VM_NODE_FMT      "/local/domain/%d/control/dpdk/%s"
+#define XEN_MEMPOOL_SUFFIX   "mempool_gref"
+#define XEN_RXVRING_SUFFIX   "rx_vring_gref"
+#define XEN_TXVRING_SUFFIX   "tx_vring_gref"
+#define XEN_GVA_SUFFIX       "mempool_va"
+#define XEN_VRINGFLAG_SUFFIX "vring_flag"
+#define XEN_ADDR_SUFFIX      "ether_addr"
+#define VIRTIO_START         "event_type_start_"
+
+#define XEN_GREF_SPLITTOKEN  ','
+
+#define MAX_XENVIRT_MEMPOOL 16
+#define MAX_VIRTIO  32
+#define MAX_GREF_PER_NODE 64  /* 128 MB memory */
+
+#define PAGE_SIZE   4096
+#define PAGE_PFNNUM (PAGE_SIZE / sizeof(uint32_t))
+
+#define XEN_GNTDEV_FNAME "/dev/xen/gntdev"
+
+/* xen grant reference info in one grant node */
+struct xen_gnt {
+	uint32_t gref;	/* grant reference for this node */
+	union {
+		int gref;		/* grant reference */
+		uint32_t pfn_num;	/* guest pfn number of grant reference */
+	} gref_pfn[PAGE_PFNNUM];
+}__attribute__((__packed__));
+
+
+/* structure for mempool or vring node list */
+struct xen_gntnode {
+	uint32_t gnt_num;           /* grant reference number */
+	struct xen_gnt *gnt_info;   /* grant reference info */
+};
+
+
+struct xen_vring {
+	uint32_t dom_id;
+	uint32_t virtio_idx;    /* index of virtio device */
+	void *rxvring_addr;     /* mapped virtual address of rxvring */
+	void *txvring_addr;     /* mapped virtual address of txvring */
+	uint32_t rxpfn_num;     /* number of gpfn for rxvring */
+	uint32_t txpfn_num;	/* number of gpfn for txvring */
+	uint32_t *rxpfn_tbl;    /* array of rxvring gpfn */
+	uint32_t *txpfn_tbl;	/* array of txvring gpfn */
+	uint64_t *rx_pindex;    /* index used to release rx grefs */
+	uint64_t *tx_pindex;    /* index used to release tx grefs */
+	uint64_t  flag_index;
+	uint8_t  *flag; 	/* cleared to zero on guest unmap */
+	struct ether_addr addr; /* ethernet address of virtio device */
+	uint8_t   removed;
+
+};
+
+struct xen_mempool {
+	uint32_t dom_id;      /* guest domain id */
+	uint32_t pool_idx;    /* index of memory pool */
+	void *gva;            /* guest virtual address of mbuf pool */
+	void *hva;            /* host virtual address of mbuf pool */
+	uint32_t mempfn_num;  /* number of gpfn for mbuf pool */
+	uint32_t *mempfn_tbl; /* array of mbuf pool gpfn */
+	uint64_t *pindex;     /* index used to release grefs */
+};
+
+struct xen_guest {
+	TAILQ_ENTRY(xen_guest) next;
+	int32_t dom_id;       /* guest domain id */
+	uint32_t pool_num;    /* number of mbuf pool of the guest */
+	uint32_t vring_num;   /* number of virtio ports of the guest */
+	/* array contain the guest mbuf pool info */
+	struct xen_mempool mempool[MAX_XENVIRT_MEMPOOL];
+	/* array contain the guest rx/tx vring info */
+	struct xen_vring vring[MAX_VIRTIO];
+};
+
+TAILQ_HEAD(xen_guestlist, xen_guest);
+
+int
+parse_mempoolnode(struct xen_guest *guest);
+
+int
+xenhost_init(void);
+
+int
+parse_vringnode(struct xen_guest *guest, uint32_t virtio_idx);
+
+int
+parse_mempoolnode(struct xen_guest *guest);
+
+void
+cleanup_mempool(struct xen_mempool *mempool);
+
+void
+cleanup_vring(struct xen_vring *vring);
+
+void
+virtio_monitor_loop(void);
+
+int
+init_virtio_xen(struct virtio_net_device_ops const * const);
+
+#endif