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Diffstat (limited to 'src/dpdk_lib18/librte_pmd_virtio/virtqueue.h')
| -rwxr-xr-x | src/dpdk_lib18/librte_pmd_virtio/virtqueue.h | 283 |
1 files changed, 0 insertions, 283 deletions
diff --git a/src/dpdk_lib18/librte_pmd_virtio/virtqueue.h b/src/dpdk_lib18/librte_pmd_virtio/virtqueue.h deleted file mode 100755 index fdee0547..00000000 --- a/src/dpdk_lib18/librte_pmd_virtio/virtqueue.h +++ /dev/null @@ -1,283 +0,0 @@ -/*- - * 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 _VIRTQUEUE_H_ -#define _VIRTQUEUE_H_ - -#include <stdint.h> - -#include <rte_atomic.h> -#include <rte_mbuf.h> -#include <rte_memory.h> -#include <rte_memzone.h> -#include <rte_mempool.h> - -#include "virtio_pci.h" -#include "virtio_ring.h" -#include "virtio_logs.h" - -#define mb() rte_mb() -#define wmb() rte_wmb() -#define rmb() rte_rmb() - -#ifdef RTE_PMD_PACKET_PREFETCH -#define rte_packet_prefetch(p) rte_prefetch1(p) -#else -#define rte_packet_prefetch(p) do {} while(0) -#endif - -#define VIRTQUEUE_MAX_NAME_SZ 32 - -#define RTE_MBUF_DATA_DMA_ADDR(mb) \ - (uint64_t) ((mb)->buf_physaddr + (mb)->data_off) - -#define VTNET_SQ_RQ_QUEUE_IDX 0 -#define VTNET_SQ_TQ_QUEUE_IDX 1 -#define VTNET_SQ_CQ_QUEUE_IDX 2 - -enum { VTNET_RQ = 0, VTNET_TQ = 1, VTNET_CQ = 2 }; -/** - * The maximum virtqueue size is 2^15. Use that value as the end of - * descriptor chain terminator since it will never be a valid index - * in the descriptor table. This is used to verify we are correctly - * handling vq_free_cnt. - */ -#define VQ_RING_DESC_CHAIN_END 32768 - -/** - * Control the RX mode, ie. promiscuous, allmulti, etc... - * All commands require an "out" sg entry containing a 1 byte - * state value, zero = disable, non-zero = enable. Commands - * 0 and 1 are supported with the VIRTIO_NET_F_CTRL_RX feature. - * Commands 2-5 are added with VIRTIO_NET_F_CTRL_RX_EXTRA. - */ -#define VIRTIO_NET_CTRL_RX 0 -#define VIRTIO_NET_CTRL_RX_PROMISC 0 -#define VIRTIO_NET_CTRL_RX_ALLMULTI 1 -#define VIRTIO_NET_CTRL_RX_ALLUNI 2 -#define VIRTIO_NET_CTRL_RX_NOMULTI 3 -#define VIRTIO_NET_CTRL_RX_NOUNI 4 -#define VIRTIO_NET_CTRL_RX_NOBCAST 5 - -/** - * Control VLAN filtering - * - * The VLAN filter table is controlled via a simple ADD/DEL interface. - * VLAN IDs not added may be filtered by the hypervisor. Del is the - * opposite of add. Both commands expect an out entry containing a 2 - * byte VLAN ID. VLAN filtering is available with the - * VIRTIO_NET_F_CTRL_VLAN feature bit. - */ -#define VIRTIO_NET_CTRL_VLAN 2 -#define VIRTIO_NET_CTRL_VLAN_ADD 0 -#define VIRTIO_NET_CTRL_VLAN_DEL 1 - -struct virtio_net_ctrl_hdr { - uint8_t class; - uint8_t cmd; -} __attribute__((packed)); - -typedef uint8_t virtio_net_ctrl_ack; - -#define VIRTIO_NET_OK 0 -#define VIRTIO_NET_ERR 1 - -#define VIRTIO_MAX_CTRL_DATA 128 - -struct virtio_pmd_ctrl { - struct virtio_net_ctrl_hdr hdr; - virtio_net_ctrl_ack status; - uint8_t data[VIRTIO_MAX_CTRL_DATA]; -}; - -struct virtqueue { - struct virtio_hw *hw; /**< virtio_hw structure pointer. */ - const struct rte_memzone *mz; /**< mem zone to populate RX ring. */ - const struct rte_memzone *virtio_net_hdr_mz; /**< memzone to populate hdr. */ - struct rte_mempool *mpool; /**< mempool for mbuf allocation */ - uint16_t queue_id; /**< DPDK queue index. */ - uint8_t port_id; /**< Device port identifier. */ - - void *vq_ring_virt_mem; /**< linear address of vring*/ - int vq_alignment; - int vq_ring_size; - phys_addr_t vq_ring_mem; /**< physical address of vring */ - - struct vring vq_ring; /**< vring keeping desc, used and avail */ - uint16_t vq_free_cnt; /**< num of desc available */ - uint16_t vq_nentries; /**< vring desc numbers */ - uint16_t vq_queue_index; /**< PCI queue index */ - /** - * Head of the free chain in the descriptor table. If - * there are no free descriptors, this will be set to - * VQ_RING_DESC_CHAIN_END. - */ - uint16_t vq_desc_head_idx; - uint16_t vq_desc_tail_idx; - /** - * Last consumed descriptor in the used table, - * trails vq_ring.used->idx. - */ - uint16_t vq_used_cons_idx; - uint16_t vq_avail_idx; - phys_addr_t virtio_net_hdr_mem; /**< hdr for each xmit packet */ - - /* Statistics */ - uint64_t packets; - uint64_t bytes; - uint64_t errors; - - struct vq_desc_extra { - void *cookie; - uint16_t ndescs; - } vq_descx[0]; -}; - -/* If multiqueue is provided by host, then we suppport it. */ -#ifndef VIRTIO_NET_F_MQ -/* Device supports Receive Flow Steering */ -#define VIRTIO_NET_F_MQ 0x400000 -#define VIRTIO_NET_CTRL_MQ 4 -#define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET 0 -#define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1 -#define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000 -#endif - -/** - * This is the first element of the scatter-gather list. If you don't - * specify GSO or CSUM features, you can simply ignore the header. - */ -struct virtio_net_hdr { -#define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 /**< Use csum_start,csum_offset*/ - uint8_t flags; -#define VIRTIO_NET_HDR_GSO_NONE 0 /**< Not a GSO frame */ -#define VIRTIO_NET_HDR_GSO_TCPV4 1 /**< GSO frame, IPv4 TCP (TSO) */ -#define VIRTIO_NET_HDR_GSO_UDP 3 /**< GSO frame, IPv4 UDP (UFO) */ -#define VIRTIO_NET_HDR_GSO_TCPV6 4 /**< GSO frame, IPv6 TCP */ -#define VIRTIO_NET_HDR_GSO_ECN 0x80 /**< TCP has ECN set */ - uint8_t gso_type; - uint16_t hdr_len; /**< Ethernet + IP + tcp/udp hdrs */ - uint16_t gso_size; /**< Bytes to append to hdr_len per frame */ - uint16_t csum_start; /**< Position to start checksumming from */ - uint16_t csum_offset; /**< Offset after that to place checksum */ -}; - -/** - * This is the version of the header to use when the MRG_RXBUF - * feature has been negotiated. - */ -struct virtio_net_hdr_mrg_rxbuf { - struct virtio_net_hdr hdr; - uint16_t num_buffers; /**< Number of merged rx buffers */ -}; - -/** - * Tell the backend not to interrupt us. - */ -void virtqueue_disable_intr(struct virtqueue *vq); -/** - * Dump virtqueue internal structures, for debug purpose only. - */ -void virtqueue_dump(struct virtqueue *vq); -/** - * Get all mbufs to be freed. - */ -struct rte_mbuf *virtqueue_detatch_unused(struct virtqueue *vq); - -static inline int -virtqueue_full(const struct virtqueue *vq) -{ - return vq->vq_free_cnt == 0; -} - -#define VIRTQUEUE_NUSED(vq) ((uint16_t)((vq)->vq_ring.used->idx - (vq)->vq_used_cons_idx)) - -static inline void -vq_update_avail_idx(struct virtqueue *vq) -{ - rte_compiler_barrier(); - vq->vq_ring.avail->idx = vq->vq_avail_idx; -} - -static inline void -vq_update_avail_ring(struct virtqueue *vq, uint16_t desc_idx) -{ - uint16_t avail_idx; - /* - * Place the head of the descriptor chain into the next slot and make - * it usable to the host. The chain is made available now rather than - * deferring to virtqueue_notify() in the hopes that if the host is - * currently running on another CPU, we can keep it processing the new - * descriptor. - */ - avail_idx = (uint16_t)(vq->vq_avail_idx & (vq->vq_nentries - 1)); - vq->vq_ring.avail->ring[avail_idx] = desc_idx; - vq->vq_avail_idx++; -} - -static inline int -virtqueue_kick_prepare(struct virtqueue *vq) -{ - return !(vq->vq_ring.used->flags & VRING_USED_F_NO_NOTIFY); -} - -static inline void -virtqueue_notify(struct virtqueue *vq) -{ - /* - * Ensure updated avail->idx is visible to host. mb() necessary? - * For virtio on IA, the notificaiton is through io port operation - * which is a serialization instruction itself. - */ - VIRTIO_WRITE_REG_2(vq->hw, VIRTIO_PCI_QUEUE_NOTIFY, vq->vq_queue_index); -} - -#ifdef RTE_LIBRTE_VIRTIO_DEBUG_DUMP -#define VIRTQUEUE_DUMP(vq) do { \ - uint16_t used_idx, nused; \ - used_idx = (vq)->vq_ring.used->idx; \ - nused = (uint16_t)(used_idx - (vq)->vq_used_cons_idx); \ - PMD_INIT_LOG(DEBUG, \ - "VQ: - size=%d; free=%d; used=%d; desc_head_idx=%d;" \ - " avail.idx=%d; used_cons_idx=%d; used.idx=%d;" \ - " avail.flags=0x%x; used.flags=0x%x", \ - (vq)->vq_nentries, (vq)->vq_free_cnt, nused, \ - (vq)->vq_desc_head_idx, (vq)->vq_ring.avail->idx, \ - (vq)->vq_used_cons_idx, (vq)->vq_ring.used->idx, \ - (vq)->vq_ring.avail->flags, (vq)->vq_ring.used->flags); \ -} while (0) -#else -#define VIRTQUEUE_DUMP(vq) do { } while (0) -#endif - -#endif /* _VIRTQUEUE_H_ */ |