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Diffstat (limited to 'examples/vhost_xen/xen_vhost.h')
| -rw-r--r-- | examples/vhost_xen/xen_vhost.h | 148 |
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 |