830f7e7907
Vhost-user library locks all VQ's access lock when processing
vring based messages, such as SET_VRING_KICK and SET_VRING_CALL,
and the data processing thread may already be started, e.g: SPDK
vhost-blk and vhost-scsi will start the data processing thread
when one vring is ready, then deadlock may happen when SPDK is
posting interrupts to VM. Here, we add a new API which allows
caller to try again later for this case.
Bugzilla ID: 1015
Fixes: c573699830 ("vhost: fix missing virtqueue lock protection")
Cc: stable@dpdk.org
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
2188 lines
47 KiB
C
2188 lines
47 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2017 Intel Corporation
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*/
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#include <linux/vhost.h>
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#include <linux/virtio_net.h>
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#include <stdint.h>
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#include <stdlib.h>
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#ifdef RTE_LIBRTE_VHOST_NUMA
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#include <numa.h>
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#include <numaif.h>
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#endif
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#include <rte_errno.h>
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#include <rte_log.h>
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#include <rte_memory.h>
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#include <rte_malloc.h>
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#include <rte_vhost.h>
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#include "iotlb.h"
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#include "vhost.h"
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#include "vhost_user.h"
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struct virtio_net *vhost_devices[RTE_MAX_VHOST_DEVICE];
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pthread_mutex_t vhost_dev_lock = PTHREAD_MUTEX_INITIALIZER;
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pthread_mutex_t vhost_dma_lock = PTHREAD_MUTEX_INITIALIZER;
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struct vhost_vq_stats_name_off {
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char name[RTE_VHOST_STATS_NAME_SIZE];
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unsigned int offset;
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};
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static const struct vhost_vq_stats_name_off vhost_vq_stat_strings[] = {
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{"good_packets", offsetof(struct vhost_virtqueue, stats.packets)},
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{"good_bytes", offsetof(struct vhost_virtqueue, stats.bytes)},
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{"multicast_packets", offsetof(struct vhost_virtqueue, stats.multicast)},
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{"broadcast_packets", offsetof(struct vhost_virtqueue, stats.broadcast)},
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{"undersize_packets", offsetof(struct vhost_virtqueue, stats.size_bins[0])},
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{"size_64_packets", offsetof(struct vhost_virtqueue, stats.size_bins[1])},
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{"size_65_127_packets", offsetof(struct vhost_virtqueue, stats.size_bins[2])},
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{"size_128_255_packets", offsetof(struct vhost_virtqueue, stats.size_bins[3])},
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{"size_256_511_packets", offsetof(struct vhost_virtqueue, stats.size_bins[4])},
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{"size_512_1023_packets", offsetof(struct vhost_virtqueue, stats.size_bins[5])},
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{"size_1024_1518_packets", offsetof(struct vhost_virtqueue, stats.size_bins[6])},
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{"size_1519_max_packets", offsetof(struct vhost_virtqueue, stats.size_bins[7])},
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{"guest_notifications", offsetof(struct vhost_virtqueue, stats.guest_notifications)},
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{"iotlb_hits", offsetof(struct vhost_virtqueue, stats.iotlb_hits)},
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{"iotlb_misses", offsetof(struct vhost_virtqueue, stats.iotlb_misses)},
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{"inflight_submitted", offsetof(struct vhost_virtqueue, stats.inflight_submitted)},
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{"inflight_completed", offsetof(struct vhost_virtqueue, stats.inflight_completed)},
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};
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#define VHOST_NB_VQ_STATS RTE_DIM(vhost_vq_stat_strings)
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/* Called with iotlb_lock read-locked */
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uint64_t
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__vhost_iova_to_vva(struct virtio_net *dev, struct vhost_virtqueue *vq,
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uint64_t iova, uint64_t *size, uint8_t perm)
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{
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uint64_t vva, tmp_size;
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if (unlikely(!*size))
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return 0;
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tmp_size = *size;
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vva = vhost_user_iotlb_cache_find(vq, iova, &tmp_size, perm);
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if (tmp_size == *size) {
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if (dev->flags & VIRTIO_DEV_STATS_ENABLED)
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vq->stats.iotlb_hits++;
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return vva;
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}
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if (dev->flags & VIRTIO_DEV_STATS_ENABLED)
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vq->stats.iotlb_misses++;
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iova += tmp_size;
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if (!vhost_user_iotlb_pending_miss(vq, iova, perm)) {
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/*
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* iotlb_lock is read-locked for a full burst,
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* but it only protects the iotlb cache.
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* In case of IOTLB miss, we might block on the socket,
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* which could cause a deadlock with QEMU if an IOTLB update
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* is being handled. We can safely unlock here to avoid it.
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*/
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vhost_user_iotlb_rd_unlock(vq);
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vhost_user_iotlb_pending_insert(dev, vq, iova, perm);
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if (vhost_user_iotlb_miss(dev, iova, perm)) {
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VHOST_LOG_DATA(dev->ifname, ERR,
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"IOTLB miss req failed for IOVA 0x%" PRIx64 "\n",
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iova);
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vhost_user_iotlb_pending_remove(vq, iova, 1, perm);
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}
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vhost_user_iotlb_rd_lock(vq);
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}
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return 0;
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}
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#define VHOST_LOG_PAGE 4096
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/*
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* Atomically set a bit in memory.
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*/
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static __rte_always_inline void
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vhost_set_bit(unsigned int nr, volatile uint8_t *addr)
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{
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#if defined(RTE_TOOLCHAIN_GCC) && (GCC_VERSION < 70100)
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/*
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* __sync_ built-ins are deprecated, but __atomic_ ones
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* are sub-optimized in older GCC versions.
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*/
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__sync_fetch_and_or_1(addr, (1U << nr));
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#else
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__atomic_fetch_or(addr, (1U << nr), __ATOMIC_RELAXED);
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#endif
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}
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static __rte_always_inline void
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vhost_log_page(uint8_t *log_base, uint64_t page)
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{
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vhost_set_bit(page % 8, &log_base[page / 8]);
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}
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void
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__vhost_log_write(struct virtio_net *dev, uint64_t addr, uint64_t len)
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{
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uint64_t page;
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if (unlikely(!dev->log_base || !len))
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return;
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if (unlikely(dev->log_size <= ((addr + len - 1) / VHOST_LOG_PAGE / 8)))
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return;
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/* To make sure guest memory updates are committed before logging */
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rte_atomic_thread_fence(__ATOMIC_RELEASE);
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page = addr / VHOST_LOG_PAGE;
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while (page * VHOST_LOG_PAGE < addr + len) {
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vhost_log_page((uint8_t *)(uintptr_t)dev->log_base, page);
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page += 1;
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}
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}
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void
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__vhost_log_write_iova(struct virtio_net *dev, struct vhost_virtqueue *vq,
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uint64_t iova, uint64_t len)
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{
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uint64_t hva, gpa, map_len;
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map_len = len;
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hva = __vhost_iova_to_vva(dev, vq, iova, &map_len, VHOST_ACCESS_RW);
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if (map_len != len) {
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VHOST_LOG_DATA(dev->ifname, ERR,
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"failed to write log for IOVA 0x%" PRIx64 ". No IOTLB entry found\n",
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iova);
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return;
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}
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gpa = hva_to_gpa(dev, hva, len);
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if (gpa)
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__vhost_log_write(dev, gpa, len);
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}
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void
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__vhost_log_cache_sync(struct virtio_net *dev, struct vhost_virtqueue *vq)
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{
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unsigned long *log_base;
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int i;
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if (unlikely(!dev->log_base))
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return;
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/* No cache, nothing to sync */
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if (unlikely(!vq->log_cache))
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return;
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rte_atomic_thread_fence(__ATOMIC_RELEASE);
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log_base = (unsigned long *)(uintptr_t)dev->log_base;
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for (i = 0; i < vq->log_cache_nb_elem; i++) {
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struct log_cache_entry *elem = vq->log_cache + i;
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#if defined(RTE_TOOLCHAIN_GCC) && (GCC_VERSION < 70100)
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/*
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* '__sync' builtins are deprecated, but '__atomic' ones
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* are sub-optimized in older GCC versions.
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*/
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__sync_fetch_and_or(log_base + elem->offset, elem->val);
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#else
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__atomic_fetch_or(log_base + elem->offset, elem->val,
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__ATOMIC_RELAXED);
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#endif
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}
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rte_atomic_thread_fence(__ATOMIC_RELEASE);
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vq->log_cache_nb_elem = 0;
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}
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static __rte_always_inline void
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vhost_log_cache_page(struct virtio_net *dev, struct vhost_virtqueue *vq,
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uint64_t page)
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{
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uint32_t bit_nr = page % (sizeof(unsigned long) << 3);
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uint32_t offset = page / (sizeof(unsigned long) << 3);
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int i;
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if (unlikely(!vq->log_cache)) {
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/* No logging cache allocated, write dirty log map directly */
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rte_atomic_thread_fence(__ATOMIC_RELEASE);
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vhost_log_page((uint8_t *)(uintptr_t)dev->log_base, page);
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return;
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}
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for (i = 0; i < vq->log_cache_nb_elem; i++) {
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struct log_cache_entry *elem = vq->log_cache + i;
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if (elem->offset == offset) {
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elem->val |= (1UL << bit_nr);
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return;
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}
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}
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if (unlikely(i >= VHOST_LOG_CACHE_NR)) {
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/*
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* No more room for a new log cache entry,
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* so write the dirty log map directly.
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*/
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rte_atomic_thread_fence(__ATOMIC_RELEASE);
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vhost_log_page((uint8_t *)(uintptr_t)dev->log_base, page);
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return;
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}
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vq->log_cache[i].offset = offset;
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vq->log_cache[i].val = (1UL << bit_nr);
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vq->log_cache_nb_elem++;
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}
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void
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__vhost_log_cache_write(struct virtio_net *dev, struct vhost_virtqueue *vq,
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uint64_t addr, uint64_t len)
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{
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uint64_t page;
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if (unlikely(!dev->log_base || !len))
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return;
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if (unlikely(dev->log_size <= ((addr + len - 1) / VHOST_LOG_PAGE / 8)))
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return;
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page = addr / VHOST_LOG_PAGE;
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while (page * VHOST_LOG_PAGE < addr + len) {
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vhost_log_cache_page(dev, vq, page);
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page += 1;
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}
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}
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void
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__vhost_log_cache_write_iova(struct virtio_net *dev, struct vhost_virtqueue *vq,
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uint64_t iova, uint64_t len)
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{
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uint64_t hva, gpa, map_len;
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map_len = len;
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hva = __vhost_iova_to_vva(dev, vq, iova, &map_len, VHOST_ACCESS_RW);
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if (map_len != len) {
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VHOST_LOG_DATA(dev->ifname, ERR,
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"failed to write log for IOVA 0x%" PRIx64 ". No IOTLB entry found\n",
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iova);
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return;
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}
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gpa = hva_to_gpa(dev, hva, len);
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if (gpa)
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__vhost_log_cache_write(dev, vq, gpa, len);
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}
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void *
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vhost_alloc_copy_ind_table(struct virtio_net *dev, struct vhost_virtqueue *vq,
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uint64_t desc_addr, uint64_t desc_len)
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{
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void *idesc;
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uint64_t src, dst;
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uint64_t len, remain = desc_len;
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idesc = rte_malloc_socket(__func__, desc_len, 0, vq->numa_node);
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if (unlikely(!idesc))
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return NULL;
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dst = (uint64_t)(uintptr_t)idesc;
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while (remain) {
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len = remain;
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src = vhost_iova_to_vva(dev, vq, desc_addr, &len,
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VHOST_ACCESS_RO);
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if (unlikely(!src || !len)) {
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rte_free(idesc);
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return NULL;
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}
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rte_memcpy((void *)(uintptr_t)dst, (void *)(uintptr_t)src, len);
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remain -= len;
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dst += len;
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desc_addr += len;
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}
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return idesc;
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}
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void
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cleanup_vq(struct vhost_virtqueue *vq, int destroy)
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{
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if ((vq->callfd >= 0) && (destroy != 0))
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close(vq->callfd);
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if (vq->kickfd >= 0)
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close(vq->kickfd);
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}
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void
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cleanup_vq_inflight(struct virtio_net *dev, struct vhost_virtqueue *vq)
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{
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if (!(dev->protocol_features &
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(1ULL << VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD)))
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return;
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if (vq_is_packed(dev)) {
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if (vq->inflight_packed)
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vq->inflight_packed = NULL;
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} else {
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if (vq->inflight_split)
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vq->inflight_split = NULL;
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}
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if (vq->resubmit_inflight) {
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if (vq->resubmit_inflight->resubmit_list) {
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rte_free(vq->resubmit_inflight->resubmit_list);
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vq->resubmit_inflight->resubmit_list = NULL;
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}
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rte_free(vq->resubmit_inflight);
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vq->resubmit_inflight = NULL;
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}
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}
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/*
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* Unmap any memory, close any file descriptors and
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* free any memory owned by a device.
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*/
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void
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cleanup_device(struct virtio_net *dev, int destroy)
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{
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uint32_t i;
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vhost_backend_cleanup(dev);
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for (i = 0; i < dev->nr_vring; i++) {
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cleanup_vq(dev->virtqueue[i], destroy);
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cleanup_vq_inflight(dev, dev->virtqueue[i]);
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}
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}
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static void
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vhost_free_async_mem(struct vhost_virtqueue *vq)
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{
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if (!vq->async)
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return;
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rte_free(vq->async->pkts_info);
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rte_free(vq->async->pkts_cmpl_flag);
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rte_free(vq->async->buffers_packed);
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vq->async->buffers_packed = NULL;
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rte_free(vq->async->descs_split);
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vq->async->descs_split = NULL;
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rte_free(vq->async);
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vq->async = NULL;
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}
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void
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free_vq(struct virtio_net *dev, struct vhost_virtqueue *vq)
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{
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if (vq_is_packed(dev))
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rte_free(vq->shadow_used_packed);
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else
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rte_free(vq->shadow_used_split);
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vhost_free_async_mem(vq);
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rte_free(vq->batch_copy_elems);
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vhost_user_iotlb_destroy(vq);
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rte_free(vq->log_cache);
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rte_free(vq);
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}
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/*
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* Release virtqueues and device memory.
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*/
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static void
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free_device(struct virtio_net *dev)
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{
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uint32_t i;
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for (i = 0; i < dev->nr_vring; i++)
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free_vq(dev, dev->virtqueue[i]);
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rte_free(dev);
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}
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static __rte_always_inline int
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log_translate(struct virtio_net *dev, struct vhost_virtqueue *vq)
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{
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if (likely(!(vq->ring_addrs.flags & (1 << VHOST_VRING_F_LOG))))
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return 0;
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vq->log_guest_addr = translate_log_addr(dev, vq,
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vq->ring_addrs.log_guest_addr);
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if (vq->log_guest_addr == 0)
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return -1;
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return 0;
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}
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|
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/*
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* Converts vring log address to GPA
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* If IOMMU is enabled, the log address is IOVA
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* If IOMMU not enabled, the log address is already GPA
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*
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* Caller should have iotlb_lock read-locked
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*/
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uint64_t
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translate_log_addr(struct virtio_net *dev, struct vhost_virtqueue *vq,
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uint64_t log_addr)
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{
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if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM)) {
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const uint64_t exp_size = sizeof(uint64_t);
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uint64_t hva, gpa;
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uint64_t size = exp_size;
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hva = vhost_iova_to_vva(dev, vq, log_addr,
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&size, VHOST_ACCESS_RW);
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if (size != exp_size)
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return 0;
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gpa = hva_to_gpa(dev, hva, exp_size);
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if (!gpa) {
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VHOST_LOG_DATA(dev->ifname, ERR,
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"failed to find GPA for log_addr: 0x%"
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PRIx64 " hva: 0x%" PRIx64 "\n",
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log_addr, hva);
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return 0;
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}
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return gpa;
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} else
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return log_addr;
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}
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/* Caller should have iotlb_lock read-locked */
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static int
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vring_translate_split(struct virtio_net *dev, struct vhost_virtqueue *vq)
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{
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uint64_t req_size, size;
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req_size = sizeof(struct vring_desc) * vq->size;
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size = req_size;
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vq->desc = (struct vring_desc *)(uintptr_t)vhost_iova_to_vva(dev, vq,
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vq->ring_addrs.desc_user_addr,
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&size, VHOST_ACCESS_RW);
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if (!vq->desc || size != req_size)
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return -1;
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|
|
req_size = sizeof(struct vring_avail);
|
|
req_size += sizeof(uint16_t) * vq->size;
|
|
if (dev->features & (1ULL << VIRTIO_RING_F_EVENT_IDX))
|
|
req_size += sizeof(uint16_t);
|
|
size = req_size;
|
|
vq->avail = (struct vring_avail *)(uintptr_t)vhost_iova_to_vva(dev, vq,
|
|
vq->ring_addrs.avail_user_addr,
|
|
&size, VHOST_ACCESS_RW);
|
|
if (!vq->avail || size != req_size)
|
|
return -1;
|
|
|
|
req_size = sizeof(struct vring_used);
|
|
req_size += sizeof(struct vring_used_elem) * vq->size;
|
|
if (dev->features & (1ULL << VIRTIO_RING_F_EVENT_IDX))
|
|
req_size += sizeof(uint16_t);
|
|
size = req_size;
|
|
vq->used = (struct vring_used *)(uintptr_t)vhost_iova_to_vva(dev, vq,
|
|
vq->ring_addrs.used_user_addr,
|
|
&size, VHOST_ACCESS_RW);
|
|
if (!vq->used || size != req_size)
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Caller should have iotlb_lock read-locked */
|
|
static int
|
|
vring_translate_packed(struct virtio_net *dev, struct vhost_virtqueue *vq)
|
|
{
|
|
uint64_t req_size, size;
|
|
|
|
req_size = sizeof(struct vring_packed_desc) * vq->size;
|
|
size = req_size;
|
|
vq->desc_packed = (struct vring_packed_desc *)(uintptr_t)
|
|
vhost_iova_to_vva(dev, vq, vq->ring_addrs.desc_user_addr,
|
|
&size, VHOST_ACCESS_RW);
|
|
if (!vq->desc_packed || size != req_size)
|
|
return -1;
|
|
|
|
req_size = sizeof(struct vring_packed_desc_event);
|
|
size = req_size;
|
|
vq->driver_event = (struct vring_packed_desc_event *)(uintptr_t)
|
|
vhost_iova_to_vva(dev, vq, vq->ring_addrs.avail_user_addr,
|
|
&size, VHOST_ACCESS_RW);
|
|
if (!vq->driver_event || size != req_size)
|
|
return -1;
|
|
|
|
req_size = sizeof(struct vring_packed_desc_event);
|
|
size = req_size;
|
|
vq->device_event = (struct vring_packed_desc_event *)(uintptr_t)
|
|
vhost_iova_to_vva(dev, vq, vq->ring_addrs.used_user_addr,
|
|
&size, VHOST_ACCESS_RW);
|
|
if (!vq->device_event || size != req_size)
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
vring_translate(struct virtio_net *dev, struct vhost_virtqueue *vq)
|
|
{
|
|
|
|
if (!(dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM)))
|
|
return -1;
|
|
|
|
if (vq_is_packed(dev)) {
|
|
if (vring_translate_packed(dev, vq) < 0)
|
|
return -1;
|
|
} else {
|
|
if (vring_translate_split(dev, vq) < 0)
|
|
return -1;
|
|
}
|
|
|
|
if (log_translate(dev, vq) < 0)
|
|
return -1;
|
|
|
|
vq->access_ok = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
vring_invalidate(struct virtio_net *dev, struct vhost_virtqueue *vq)
|
|
{
|
|
if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))
|
|
vhost_user_iotlb_wr_lock(vq);
|
|
|
|
vq->access_ok = false;
|
|
vq->desc = NULL;
|
|
vq->avail = NULL;
|
|
vq->used = NULL;
|
|
vq->log_guest_addr = 0;
|
|
|
|
if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))
|
|
vhost_user_iotlb_wr_unlock(vq);
|
|
}
|
|
|
|
static void
|
|
init_vring_queue(struct virtio_net *dev, struct vhost_virtqueue *vq,
|
|
uint32_t vring_idx)
|
|
{
|
|
int numa_node = SOCKET_ID_ANY;
|
|
|
|
memset(vq, 0, sizeof(struct vhost_virtqueue));
|
|
|
|
vq->index = vring_idx;
|
|
vq->kickfd = VIRTIO_UNINITIALIZED_EVENTFD;
|
|
vq->callfd = VIRTIO_UNINITIALIZED_EVENTFD;
|
|
vq->notif_enable = VIRTIO_UNINITIALIZED_NOTIF;
|
|
|
|
#ifdef RTE_LIBRTE_VHOST_NUMA
|
|
if (get_mempolicy(&numa_node, NULL, 0, vq, MPOL_F_NODE | MPOL_F_ADDR)) {
|
|
VHOST_LOG_CONFIG(dev->ifname, ERR, "failed to query numa node: %s\n",
|
|
rte_strerror(errno));
|
|
numa_node = SOCKET_ID_ANY;
|
|
}
|
|
#endif
|
|
vq->numa_node = numa_node;
|
|
|
|
vhost_user_iotlb_init(dev, vq);
|
|
}
|
|
|
|
static void
|
|
reset_vring_queue(struct virtio_net *dev, struct vhost_virtqueue *vq)
|
|
{
|
|
int callfd;
|
|
|
|
callfd = vq->callfd;
|
|
init_vring_queue(dev, vq, vq->index);
|
|
vq->callfd = callfd;
|
|
}
|
|
|
|
int
|
|
alloc_vring_queue(struct virtio_net *dev, uint32_t vring_idx)
|
|
{
|
|
struct vhost_virtqueue *vq;
|
|
uint32_t i;
|
|
|
|
/* Also allocate holes, if any, up to requested vring index. */
|
|
for (i = 0; i <= vring_idx; i++) {
|
|
if (dev->virtqueue[i])
|
|
continue;
|
|
|
|
vq = rte_zmalloc(NULL, sizeof(struct vhost_virtqueue), 0);
|
|
if (vq == NULL) {
|
|
VHOST_LOG_CONFIG(dev->ifname, ERR,
|
|
"failed to allocate memory for vring %u.\n",
|
|
i);
|
|
return -1;
|
|
}
|
|
|
|
dev->virtqueue[i] = vq;
|
|
init_vring_queue(dev, vq, i);
|
|
rte_spinlock_init(&vq->access_lock);
|
|
vq->avail_wrap_counter = 1;
|
|
vq->used_wrap_counter = 1;
|
|
vq->signalled_used_valid = false;
|
|
}
|
|
|
|
dev->nr_vring = RTE_MAX(dev->nr_vring, vring_idx + 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Reset some variables in device structure, while keeping few
|
|
* others untouched, such as vid, ifname, nr_vring: they
|
|
* should be same unless the device is removed.
|
|
*/
|
|
void
|
|
reset_device(struct virtio_net *dev)
|
|
{
|
|
uint32_t i;
|
|
|
|
dev->features = 0;
|
|
dev->protocol_features = 0;
|
|
dev->flags &= VIRTIO_DEV_BUILTIN_VIRTIO_NET;
|
|
|
|
for (i = 0; i < dev->nr_vring; i++) {
|
|
struct vhost_virtqueue *vq = dev->virtqueue[i];
|
|
|
|
if (!vq) {
|
|
VHOST_LOG_CONFIG(dev->ifname, ERR,
|
|
"failed to reset vring, virtqueue not allocated (%d)\n", i);
|
|
continue;
|
|
}
|
|
reset_vring_queue(dev, vq);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Invoked when there is a new vhost-user connection established (when
|
|
* there is a new virtio device being attached).
|
|
*/
|
|
int
|
|
vhost_new_device(void)
|
|
{
|
|
struct virtio_net *dev;
|
|
int i;
|
|
|
|
pthread_mutex_lock(&vhost_dev_lock);
|
|
for (i = 0; i < RTE_MAX_VHOST_DEVICE; i++) {
|
|
if (vhost_devices[i] == NULL)
|
|
break;
|
|
}
|
|
|
|
if (i == RTE_MAX_VHOST_DEVICE) {
|
|
VHOST_LOG_CONFIG("device", ERR, "failed to find a free slot for new device.\n");
|
|
pthread_mutex_unlock(&vhost_dev_lock);
|
|
return -1;
|
|
}
|
|
|
|
dev = rte_zmalloc(NULL, sizeof(struct virtio_net), 0);
|
|
if (dev == NULL) {
|
|
VHOST_LOG_CONFIG("device", ERR, "failed to allocate memory for new device.\n");
|
|
pthread_mutex_unlock(&vhost_dev_lock);
|
|
return -1;
|
|
}
|
|
|
|
vhost_devices[i] = dev;
|
|
pthread_mutex_unlock(&vhost_dev_lock);
|
|
|
|
dev->vid = i;
|
|
dev->flags = VIRTIO_DEV_BUILTIN_VIRTIO_NET;
|
|
dev->slave_req_fd = -1;
|
|
dev->postcopy_ufd = -1;
|
|
rte_spinlock_init(&dev->slave_req_lock);
|
|
|
|
return i;
|
|
}
|
|
|
|
void
|
|
vhost_destroy_device_notify(struct virtio_net *dev)
|
|
{
|
|
struct rte_vdpa_device *vdpa_dev;
|
|
|
|
if (dev->flags & VIRTIO_DEV_RUNNING) {
|
|
vdpa_dev = dev->vdpa_dev;
|
|
if (vdpa_dev)
|
|
vdpa_dev->ops->dev_close(dev->vid);
|
|
dev->flags &= ~VIRTIO_DEV_RUNNING;
|
|
dev->notify_ops->destroy_device(dev->vid);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Invoked when there is the vhost-user connection is broken (when
|
|
* the virtio device is being detached).
|
|
*/
|
|
void
|
|
vhost_destroy_device(int vid)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
|
|
if (dev == NULL)
|
|
return;
|
|
|
|
vhost_destroy_device_notify(dev);
|
|
|
|
cleanup_device(dev, 1);
|
|
free_device(dev);
|
|
|
|
vhost_devices[vid] = NULL;
|
|
}
|
|
|
|
void
|
|
vhost_attach_vdpa_device(int vid, struct rte_vdpa_device *vdpa_dev)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
|
|
if (dev == NULL)
|
|
return;
|
|
|
|
dev->vdpa_dev = vdpa_dev;
|
|
}
|
|
|
|
void
|
|
vhost_set_ifname(int vid, const char *if_name, unsigned int if_len)
|
|
{
|
|
struct virtio_net *dev;
|
|
unsigned int len;
|
|
|
|
dev = get_device(vid);
|
|
if (dev == NULL)
|
|
return;
|
|
|
|
len = if_len > sizeof(dev->ifname) ?
|
|
sizeof(dev->ifname) : if_len;
|
|
|
|
strncpy(dev->ifname, if_name, len);
|
|
dev->ifname[sizeof(dev->ifname) - 1] = '\0';
|
|
}
|
|
|
|
void
|
|
vhost_setup_virtio_net(int vid, bool enable, bool compliant_ol_flags, bool stats_enabled,
|
|
bool support_iommu)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
|
|
if (dev == NULL)
|
|
return;
|
|
|
|
if (enable)
|
|
dev->flags |= VIRTIO_DEV_BUILTIN_VIRTIO_NET;
|
|
else
|
|
dev->flags &= ~VIRTIO_DEV_BUILTIN_VIRTIO_NET;
|
|
if (!compliant_ol_flags)
|
|
dev->flags |= VIRTIO_DEV_LEGACY_OL_FLAGS;
|
|
else
|
|
dev->flags &= ~VIRTIO_DEV_LEGACY_OL_FLAGS;
|
|
if (stats_enabled)
|
|
dev->flags |= VIRTIO_DEV_STATS_ENABLED;
|
|
else
|
|
dev->flags &= ~VIRTIO_DEV_STATS_ENABLED;
|
|
if (support_iommu)
|
|
dev->flags |= VIRTIO_DEV_SUPPORT_IOMMU;
|
|
else
|
|
dev->flags &= ~VIRTIO_DEV_SUPPORT_IOMMU;
|
|
}
|
|
|
|
void
|
|
vhost_enable_extbuf(int vid)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
|
|
if (dev == NULL)
|
|
return;
|
|
|
|
dev->extbuf = 1;
|
|
}
|
|
|
|
void
|
|
vhost_enable_linearbuf(int vid)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
|
|
if (dev == NULL)
|
|
return;
|
|
|
|
dev->linearbuf = 1;
|
|
}
|
|
|
|
int
|
|
rte_vhost_get_mtu(int vid, uint16_t *mtu)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
|
|
if (dev == NULL || mtu == NULL)
|
|
return -ENODEV;
|
|
|
|
if (!(dev->flags & VIRTIO_DEV_READY))
|
|
return -EAGAIN;
|
|
|
|
if (!(dev->features & (1ULL << VIRTIO_NET_F_MTU)))
|
|
return -ENOTSUP;
|
|
|
|
*mtu = dev->mtu;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_get_numa_node(int vid)
|
|
{
|
|
#ifdef RTE_LIBRTE_VHOST_NUMA
|
|
struct virtio_net *dev = get_device(vid);
|
|
int numa_node;
|
|
int ret;
|
|
|
|
if (dev == NULL || numa_available() != 0)
|
|
return -1;
|
|
|
|
ret = get_mempolicy(&numa_node, NULL, 0, dev,
|
|
MPOL_F_NODE | MPOL_F_ADDR);
|
|
if (ret < 0) {
|
|
VHOST_LOG_CONFIG(dev->ifname, ERR, "failed to query numa node: %s\n",
|
|
rte_strerror(errno));
|
|
return -1;
|
|
}
|
|
|
|
return numa_node;
|
|
#else
|
|
RTE_SET_USED(vid);
|
|
return -1;
|
|
#endif
|
|
}
|
|
|
|
uint16_t
|
|
rte_vhost_get_vring_num(int vid)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
|
|
if (dev == NULL)
|
|
return 0;
|
|
|
|
return dev->nr_vring;
|
|
}
|
|
|
|
int
|
|
rte_vhost_get_ifname(int vid, char *buf, size_t len)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
|
|
if (dev == NULL || buf == NULL)
|
|
return -1;
|
|
|
|
len = RTE_MIN(len, sizeof(dev->ifname));
|
|
|
|
strncpy(buf, dev->ifname, len);
|
|
buf[len - 1] = '\0';
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_get_negotiated_features(int vid, uint64_t *features)
|
|
{
|
|
struct virtio_net *dev;
|
|
|
|
dev = get_device(vid);
|
|
if (dev == NULL || features == NULL)
|
|
return -1;
|
|
|
|
*features = dev->features;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_get_negotiated_protocol_features(int vid,
|
|
uint64_t *protocol_features)
|
|
{
|
|
struct virtio_net *dev;
|
|
|
|
dev = get_device(vid);
|
|
if (dev == NULL || protocol_features == NULL)
|
|
return -1;
|
|
|
|
*protocol_features = dev->protocol_features;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_get_mem_table(int vid, struct rte_vhost_memory **mem)
|
|
{
|
|
struct virtio_net *dev;
|
|
struct rte_vhost_memory *m;
|
|
size_t size;
|
|
|
|
dev = get_device(vid);
|
|
if (dev == NULL || mem == NULL)
|
|
return -1;
|
|
|
|
size = dev->mem->nregions * sizeof(struct rte_vhost_mem_region);
|
|
m = malloc(sizeof(struct rte_vhost_memory) + size);
|
|
if (!m)
|
|
return -1;
|
|
|
|
m->nregions = dev->mem->nregions;
|
|
memcpy(m->regions, dev->mem->regions, size);
|
|
*mem = m;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_get_vhost_vring(int vid, uint16_t vring_idx,
|
|
struct rte_vhost_vring *vring)
|
|
{
|
|
struct virtio_net *dev;
|
|
struct vhost_virtqueue *vq;
|
|
|
|
dev = get_device(vid);
|
|
if (dev == NULL || vring == NULL)
|
|
return -1;
|
|
|
|
if (vring_idx >= VHOST_MAX_VRING)
|
|
return -1;
|
|
|
|
vq = dev->virtqueue[vring_idx];
|
|
if (!vq)
|
|
return -1;
|
|
|
|
if (vq_is_packed(dev)) {
|
|
vring->desc_packed = vq->desc_packed;
|
|
vring->driver_event = vq->driver_event;
|
|
vring->device_event = vq->device_event;
|
|
} else {
|
|
vring->desc = vq->desc;
|
|
vring->avail = vq->avail;
|
|
vring->used = vq->used;
|
|
}
|
|
vring->log_guest_addr = vq->log_guest_addr;
|
|
|
|
vring->callfd = vq->callfd;
|
|
vring->kickfd = vq->kickfd;
|
|
vring->size = vq->size;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_get_vhost_ring_inflight(int vid, uint16_t vring_idx,
|
|
struct rte_vhost_ring_inflight *vring)
|
|
{
|
|
struct virtio_net *dev;
|
|
struct vhost_virtqueue *vq;
|
|
|
|
dev = get_device(vid);
|
|
if (unlikely(!dev))
|
|
return -1;
|
|
|
|
if (vring_idx >= VHOST_MAX_VRING)
|
|
return -1;
|
|
|
|
vq = dev->virtqueue[vring_idx];
|
|
if (unlikely(!vq))
|
|
return -1;
|
|
|
|
if (vq_is_packed(dev)) {
|
|
if (unlikely(!vq->inflight_packed))
|
|
return -1;
|
|
|
|
vring->inflight_packed = vq->inflight_packed;
|
|
} else {
|
|
if (unlikely(!vq->inflight_split))
|
|
return -1;
|
|
|
|
vring->inflight_split = vq->inflight_split;
|
|
}
|
|
|
|
vring->resubmit_inflight = vq->resubmit_inflight;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_set_inflight_desc_split(int vid, uint16_t vring_idx,
|
|
uint16_t idx)
|
|
{
|
|
struct vhost_virtqueue *vq;
|
|
struct virtio_net *dev;
|
|
|
|
dev = get_device(vid);
|
|
if (unlikely(!dev))
|
|
return -1;
|
|
|
|
if (unlikely(!(dev->protocol_features &
|
|
(1ULL << VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD))))
|
|
return 0;
|
|
|
|
if (unlikely(vq_is_packed(dev)))
|
|
return -1;
|
|
|
|
if (unlikely(vring_idx >= VHOST_MAX_VRING))
|
|
return -1;
|
|
|
|
vq = dev->virtqueue[vring_idx];
|
|
if (unlikely(!vq))
|
|
return -1;
|
|
|
|
if (unlikely(!vq->inflight_split))
|
|
return -1;
|
|
|
|
if (unlikely(idx >= vq->size))
|
|
return -1;
|
|
|
|
vq->inflight_split->desc[idx].counter = vq->global_counter++;
|
|
vq->inflight_split->desc[idx].inflight = 1;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_set_inflight_desc_packed(int vid, uint16_t vring_idx,
|
|
uint16_t head, uint16_t last,
|
|
uint16_t *inflight_entry)
|
|
{
|
|
struct rte_vhost_inflight_info_packed *inflight_info;
|
|
struct virtio_net *dev;
|
|
struct vhost_virtqueue *vq;
|
|
struct vring_packed_desc *desc;
|
|
uint16_t old_free_head, free_head;
|
|
|
|
dev = get_device(vid);
|
|
if (unlikely(!dev))
|
|
return -1;
|
|
|
|
if (unlikely(!(dev->protocol_features &
|
|
(1ULL << VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD))))
|
|
return 0;
|
|
|
|
if (unlikely(!vq_is_packed(dev)))
|
|
return -1;
|
|
|
|
if (unlikely(vring_idx >= VHOST_MAX_VRING))
|
|
return -1;
|
|
|
|
vq = dev->virtqueue[vring_idx];
|
|
if (unlikely(!vq))
|
|
return -1;
|
|
|
|
inflight_info = vq->inflight_packed;
|
|
if (unlikely(!inflight_info))
|
|
return -1;
|
|
|
|
if (unlikely(head >= vq->size))
|
|
return -1;
|
|
|
|
desc = vq->desc_packed;
|
|
old_free_head = inflight_info->old_free_head;
|
|
if (unlikely(old_free_head >= vq->size))
|
|
return -1;
|
|
|
|
free_head = old_free_head;
|
|
|
|
/* init header descriptor */
|
|
inflight_info->desc[old_free_head].num = 0;
|
|
inflight_info->desc[old_free_head].counter = vq->global_counter++;
|
|
inflight_info->desc[old_free_head].inflight = 1;
|
|
|
|
/* save desc entry in flight entry */
|
|
while (head != ((last + 1) % vq->size)) {
|
|
inflight_info->desc[old_free_head].num++;
|
|
inflight_info->desc[free_head].addr = desc[head].addr;
|
|
inflight_info->desc[free_head].len = desc[head].len;
|
|
inflight_info->desc[free_head].flags = desc[head].flags;
|
|
inflight_info->desc[free_head].id = desc[head].id;
|
|
|
|
inflight_info->desc[old_free_head].last = free_head;
|
|
free_head = inflight_info->desc[free_head].next;
|
|
inflight_info->free_head = free_head;
|
|
head = (head + 1) % vq->size;
|
|
}
|
|
|
|
inflight_info->old_free_head = free_head;
|
|
*inflight_entry = old_free_head;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_clr_inflight_desc_split(int vid, uint16_t vring_idx,
|
|
uint16_t last_used_idx, uint16_t idx)
|
|
{
|
|
struct virtio_net *dev;
|
|
struct vhost_virtqueue *vq;
|
|
|
|
dev = get_device(vid);
|
|
if (unlikely(!dev))
|
|
return -1;
|
|
|
|
if (unlikely(!(dev->protocol_features &
|
|
(1ULL << VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD))))
|
|
return 0;
|
|
|
|
if (unlikely(vq_is_packed(dev)))
|
|
return -1;
|
|
|
|
if (unlikely(vring_idx >= VHOST_MAX_VRING))
|
|
return -1;
|
|
|
|
vq = dev->virtqueue[vring_idx];
|
|
if (unlikely(!vq))
|
|
return -1;
|
|
|
|
if (unlikely(!vq->inflight_split))
|
|
return -1;
|
|
|
|
if (unlikely(idx >= vq->size))
|
|
return -1;
|
|
|
|
rte_atomic_thread_fence(__ATOMIC_SEQ_CST);
|
|
|
|
vq->inflight_split->desc[idx].inflight = 0;
|
|
|
|
rte_atomic_thread_fence(__ATOMIC_SEQ_CST);
|
|
|
|
vq->inflight_split->used_idx = last_used_idx;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_clr_inflight_desc_packed(int vid, uint16_t vring_idx,
|
|
uint16_t head)
|
|
{
|
|
struct rte_vhost_inflight_info_packed *inflight_info;
|
|
struct virtio_net *dev;
|
|
struct vhost_virtqueue *vq;
|
|
|
|
dev = get_device(vid);
|
|
if (unlikely(!dev))
|
|
return -1;
|
|
|
|
if (unlikely(!(dev->protocol_features &
|
|
(1ULL << VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD))))
|
|
return 0;
|
|
|
|
if (unlikely(!vq_is_packed(dev)))
|
|
return -1;
|
|
|
|
if (unlikely(vring_idx >= VHOST_MAX_VRING))
|
|
return -1;
|
|
|
|
vq = dev->virtqueue[vring_idx];
|
|
if (unlikely(!vq))
|
|
return -1;
|
|
|
|
inflight_info = vq->inflight_packed;
|
|
if (unlikely(!inflight_info))
|
|
return -1;
|
|
|
|
if (unlikely(head >= vq->size))
|
|
return -1;
|
|
|
|
rte_atomic_thread_fence(__ATOMIC_SEQ_CST);
|
|
|
|
inflight_info->desc[head].inflight = 0;
|
|
|
|
rte_atomic_thread_fence(__ATOMIC_SEQ_CST);
|
|
|
|
inflight_info->old_free_head = inflight_info->free_head;
|
|
inflight_info->old_used_idx = inflight_info->used_idx;
|
|
inflight_info->old_used_wrap_counter = inflight_info->used_wrap_counter;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_set_last_inflight_io_split(int vid, uint16_t vring_idx,
|
|
uint16_t idx)
|
|
{
|
|
struct virtio_net *dev;
|
|
struct vhost_virtqueue *vq;
|
|
|
|
dev = get_device(vid);
|
|
if (unlikely(!dev))
|
|
return -1;
|
|
|
|
if (unlikely(!(dev->protocol_features &
|
|
(1ULL << VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD))))
|
|
return 0;
|
|
|
|
if (unlikely(vq_is_packed(dev)))
|
|
return -1;
|
|
|
|
if (unlikely(vring_idx >= VHOST_MAX_VRING))
|
|
return -1;
|
|
|
|
vq = dev->virtqueue[vring_idx];
|
|
if (unlikely(!vq))
|
|
return -1;
|
|
|
|
if (unlikely(!vq->inflight_split))
|
|
return -1;
|
|
|
|
if (unlikely(idx >= vq->size))
|
|
return -1;
|
|
|
|
vq->inflight_split->last_inflight_io = idx;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_set_last_inflight_io_packed(int vid, uint16_t vring_idx,
|
|
uint16_t head)
|
|
{
|
|
struct rte_vhost_inflight_info_packed *inflight_info;
|
|
struct virtio_net *dev;
|
|
struct vhost_virtqueue *vq;
|
|
uint16_t last;
|
|
|
|
dev = get_device(vid);
|
|
if (unlikely(!dev))
|
|
return -1;
|
|
|
|
if (unlikely(!(dev->protocol_features &
|
|
(1ULL << VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD))))
|
|
return 0;
|
|
|
|
if (unlikely(!vq_is_packed(dev)))
|
|
return -1;
|
|
|
|
if (unlikely(vring_idx >= VHOST_MAX_VRING))
|
|
return -1;
|
|
|
|
vq = dev->virtqueue[vring_idx];
|
|
if (unlikely(!vq))
|
|
return -1;
|
|
|
|
inflight_info = vq->inflight_packed;
|
|
if (unlikely(!inflight_info))
|
|
return -1;
|
|
|
|
if (unlikely(head >= vq->size))
|
|
return -1;
|
|
|
|
last = inflight_info->desc[head].last;
|
|
if (unlikely(last >= vq->size))
|
|
return -1;
|
|
|
|
inflight_info->desc[last].next = inflight_info->free_head;
|
|
inflight_info->free_head = head;
|
|
inflight_info->used_idx += inflight_info->desc[head].num;
|
|
if (inflight_info->used_idx >= inflight_info->desc_num) {
|
|
inflight_info->used_idx -= inflight_info->desc_num;
|
|
inflight_info->used_wrap_counter =
|
|
!inflight_info->used_wrap_counter;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_vring_call(int vid, uint16_t vring_idx)
|
|
{
|
|
struct virtio_net *dev;
|
|
struct vhost_virtqueue *vq;
|
|
|
|
dev = get_device(vid);
|
|
if (!dev)
|
|
return -1;
|
|
|
|
if (vring_idx >= VHOST_MAX_VRING)
|
|
return -1;
|
|
|
|
vq = dev->virtqueue[vring_idx];
|
|
if (!vq)
|
|
return -1;
|
|
|
|
rte_spinlock_lock(&vq->access_lock);
|
|
|
|
if (vq_is_packed(dev))
|
|
vhost_vring_call_packed(dev, vq);
|
|
else
|
|
vhost_vring_call_split(dev, vq);
|
|
|
|
rte_spinlock_unlock(&vq->access_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_vring_call_nonblock(int vid, uint16_t vring_idx)
|
|
{
|
|
struct virtio_net *dev;
|
|
struct vhost_virtqueue *vq;
|
|
|
|
dev = get_device(vid);
|
|
if (!dev)
|
|
return -1;
|
|
|
|
if (vring_idx >= VHOST_MAX_VRING)
|
|
return -1;
|
|
|
|
vq = dev->virtqueue[vring_idx];
|
|
if (!vq)
|
|
return -1;
|
|
|
|
if (!rte_spinlock_trylock(&vq->access_lock))
|
|
return -EAGAIN;
|
|
|
|
if (vq_is_packed(dev))
|
|
vhost_vring_call_packed(dev, vq);
|
|
else
|
|
vhost_vring_call_split(dev, vq);
|
|
|
|
rte_spinlock_unlock(&vq->access_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
uint16_t
|
|
rte_vhost_avail_entries(int vid, uint16_t queue_id)
|
|
{
|
|
struct virtio_net *dev;
|
|
struct vhost_virtqueue *vq;
|
|
uint16_t ret = 0;
|
|
|
|
dev = get_device(vid);
|
|
if (!dev)
|
|
return 0;
|
|
|
|
if (queue_id >= VHOST_MAX_VRING)
|
|
return 0;
|
|
|
|
vq = dev->virtqueue[queue_id];
|
|
if (!vq)
|
|
return 0;
|
|
|
|
rte_spinlock_lock(&vq->access_lock);
|
|
|
|
if (unlikely(!vq->enabled || vq->avail == NULL))
|
|
goto out;
|
|
|
|
ret = *(volatile uint16_t *)&vq->avail->idx - vq->last_used_idx;
|
|
|
|
out:
|
|
rte_spinlock_unlock(&vq->access_lock);
|
|
return ret;
|
|
}
|
|
|
|
static inline int
|
|
vhost_enable_notify_split(struct virtio_net *dev,
|
|
struct vhost_virtqueue *vq, int enable)
|
|
{
|
|
if (vq->used == NULL)
|
|
return -1;
|
|
|
|
if (!(dev->features & (1ULL << VIRTIO_RING_F_EVENT_IDX))) {
|
|
if (enable)
|
|
vq->used->flags &= ~VRING_USED_F_NO_NOTIFY;
|
|
else
|
|
vq->used->flags |= VRING_USED_F_NO_NOTIFY;
|
|
} else {
|
|
if (enable)
|
|
vhost_avail_event(vq) = vq->last_avail_idx;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static inline int
|
|
vhost_enable_notify_packed(struct virtio_net *dev,
|
|
struct vhost_virtqueue *vq, int enable)
|
|
{
|
|
uint16_t flags;
|
|
|
|
if (vq->device_event == NULL)
|
|
return -1;
|
|
|
|
if (!enable) {
|
|
vq->device_event->flags = VRING_EVENT_F_DISABLE;
|
|
return 0;
|
|
}
|
|
|
|
flags = VRING_EVENT_F_ENABLE;
|
|
if (dev->features & (1ULL << VIRTIO_RING_F_EVENT_IDX)) {
|
|
flags = VRING_EVENT_F_DESC;
|
|
vq->device_event->off_wrap = vq->last_avail_idx |
|
|
vq->avail_wrap_counter << 15;
|
|
}
|
|
|
|
rte_atomic_thread_fence(__ATOMIC_RELEASE);
|
|
|
|
vq->device_event->flags = flags;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
vhost_enable_guest_notification(struct virtio_net *dev,
|
|
struct vhost_virtqueue *vq, int enable)
|
|
{
|
|
/*
|
|
* If the virtqueue is not ready yet, it will be applied
|
|
* when it will become ready.
|
|
*/
|
|
if (!vq->ready)
|
|
return 0;
|
|
|
|
if (vq_is_packed(dev))
|
|
return vhost_enable_notify_packed(dev, vq, enable);
|
|
else
|
|
return vhost_enable_notify_split(dev, vq, enable);
|
|
}
|
|
|
|
int
|
|
rte_vhost_enable_guest_notification(int vid, uint16_t queue_id, int enable)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
struct vhost_virtqueue *vq;
|
|
int ret;
|
|
|
|
if (!dev)
|
|
return -1;
|
|
|
|
if (queue_id >= VHOST_MAX_VRING)
|
|
return -1;
|
|
|
|
vq = dev->virtqueue[queue_id];
|
|
if (!vq)
|
|
return -1;
|
|
|
|
rte_spinlock_lock(&vq->access_lock);
|
|
|
|
vq->notif_enable = enable;
|
|
ret = vhost_enable_guest_notification(dev, vq, enable);
|
|
|
|
rte_spinlock_unlock(&vq->access_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
rte_vhost_log_write(int vid, uint64_t addr, uint64_t len)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
|
|
if (dev == NULL)
|
|
return;
|
|
|
|
vhost_log_write(dev, addr, len);
|
|
}
|
|
|
|
void
|
|
rte_vhost_log_used_vring(int vid, uint16_t vring_idx,
|
|
uint64_t offset, uint64_t len)
|
|
{
|
|
struct virtio_net *dev;
|
|
struct vhost_virtqueue *vq;
|
|
|
|
dev = get_device(vid);
|
|
if (dev == NULL)
|
|
return;
|
|
|
|
if (vring_idx >= VHOST_MAX_VRING)
|
|
return;
|
|
vq = dev->virtqueue[vring_idx];
|
|
if (!vq)
|
|
return;
|
|
|
|
vhost_log_used_vring(dev, vq, offset, len);
|
|
}
|
|
|
|
uint32_t
|
|
rte_vhost_rx_queue_count(int vid, uint16_t qid)
|
|
{
|
|
struct virtio_net *dev;
|
|
struct vhost_virtqueue *vq;
|
|
uint32_t ret = 0;
|
|
|
|
dev = get_device(vid);
|
|
if (dev == NULL)
|
|
return 0;
|
|
|
|
if (unlikely(qid >= dev->nr_vring || (qid & 1) == 0)) {
|
|
VHOST_LOG_DATA(dev->ifname, ERR,
|
|
"%s: invalid virtqueue idx %d.\n",
|
|
__func__, qid);
|
|
return 0;
|
|
}
|
|
|
|
vq = dev->virtqueue[qid];
|
|
if (vq == NULL)
|
|
return 0;
|
|
|
|
rte_spinlock_lock(&vq->access_lock);
|
|
|
|
if (unlikely(!vq->enabled || vq->avail == NULL))
|
|
goto out;
|
|
|
|
ret = *((volatile uint16_t *)&vq->avail->idx) - vq->last_avail_idx;
|
|
|
|
out:
|
|
rte_spinlock_unlock(&vq->access_lock);
|
|
return ret;
|
|
}
|
|
|
|
struct rte_vdpa_device *
|
|
rte_vhost_get_vdpa_device(int vid)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
|
|
if (dev == NULL)
|
|
return NULL;
|
|
|
|
return dev->vdpa_dev;
|
|
}
|
|
|
|
int
|
|
rte_vhost_get_log_base(int vid, uint64_t *log_base,
|
|
uint64_t *log_size)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
|
|
if (dev == NULL || log_base == NULL || log_size == NULL)
|
|
return -1;
|
|
|
|
*log_base = dev->log_base;
|
|
*log_size = dev->log_size;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_get_vring_base(int vid, uint16_t queue_id,
|
|
uint16_t *last_avail_idx, uint16_t *last_used_idx)
|
|
{
|
|
struct vhost_virtqueue *vq;
|
|
struct virtio_net *dev = get_device(vid);
|
|
|
|
if (dev == NULL || last_avail_idx == NULL || last_used_idx == NULL)
|
|
return -1;
|
|
|
|
if (queue_id >= VHOST_MAX_VRING)
|
|
return -1;
|
|
|
|
vq = dev->virtqueue[queue_id];
|
|
if (!vq)
|
|
return -1;
|
|
|
|
if (vq_is_packed(dev)) {
|
|
*last_avail_idx = (vq->avail_wrap_counter << 15) |
|
|
vq->last_avail_idx;
|
|
*last_used_idx = (vq->used_wrap_counter << 15) |
|
|
vq->last_used_idx;
|
|
} else {
|
|
*last_avail_idx = vq->last_avail_idx;
|
|
*last_used_idx = vq->last_used_idx;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_set_vring_base(int vid, uint16_t queue_id,
|
|
uint16_t last_avail_idx, uint16_t last_used_idx)
|
|
{
|
|
struct vhost_virtqueue *vq;
|
|
struct virtio_net *dev = get_device(vid);
|
|
|
|
if (!dev)
|
|
return -1;
|
|
|
|
if (queue_id >= VHOST_MAX_VRING)
|
|
return -1;
|
|
|
|
vq = dev->virtqueue[queue_id];
|
|
if (!vq)
|
|
return -1;
|
|
|
|
if (vq_is_packed(dev)) {
|
|
vq->last_avail_idx = last_avail_idx & 0x7fff;
|
|
vq->avail_wrap_counter = !!(last_avail_idx & (1 << 15));
|
|
vq->last_used_idx = last_used_idx & 0x7fff;
|
|
vq->used_wrap_counter = !!(last_used_idx & (1 << 15));
|
|
} else {
|
|
vq->last_avail_idx = last_avail_idx;
|
|
vq->last_used_idx = last_used_idx;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_get_vring_base_from_inflight(int vid,
|
|
uint16_t queue_id,
|
|
uint16_t *last_avail_idx,
|
|
uint16_t *last_used_idx)
|
|
{
|
|
struct rte_vhost_inflight_info_packed *inflight_info;
|
|
struct vhost_virtqueue *vq;
|
|
struct virtio_net *dev = get_device(vid);
|
|
|
|
if (dev == NULL || last_avail_idx == NULL || last_used_idx == NULL)
|
|
return -1;
|
|
|
|
if (queue_id >= VHOST_MAX_VRING)
|
|
return -1;
|
|
|
|
vq = dev->virtqueue[queue_id];
|
|
if (!vq)
|
|
return -1;
|
|
|
|
if (!vq_is_packed(dev))
|
|
return -1;
|
|
|
|
inflight_info = vq->inflight_packed;
|
|
if (!inflight_info)
|
|
return -1;
|
|
|
|
*last_avail_idx = (inflight_info->old_used_wrap_counter << 15) |
|
|
inflight_info->old_used_idx;
|
|
*last_used_idx = *last_avail_idx;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_extern_callback_register(int vid,
|
|
struct rte_vhost_user_extern_ops const * const ops, void *ctx)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
|
|
if (dev == NULL || ops == NULL)
|
|
return -1;
|
|
|
|
dev->extern_ops = *ops;
|
|
dev->extern_data = ctx;
|
|
return 0;
|
|
}
|
|
|
|
static __rte_always_inline int
|
|
async_channel_register(struct virtio_net *dev, struct vhost_virtqueue *vq)
|
|
{
|
|
struct vhost_async *async;
|
|
int node = vq->numa_node;
|
|
|
|
if (unlikely(vq->async)) {
|
|
VHOST_LOG_CONFIG(dev->ifname, ERR,
|
|
"async register failed: already registered (qid: %d)\n",
|
|
vq->index);
|
|
return -1;
|
|
}
|
|
|
|
async = rte_zmalloc_socket(NULL, sizeof(struct vhost_async), 0, node);
|
|
if (!async) {
|
|
VHOST_LOG_CONFIG(dev->ifname, ERR,
|
|
"failed to allocate async metadata (qid: %d)\n",
|
|
vq->index);
|
|
return -1;
|
|
}
|
|
|
|
async->pkts_info = rte_malloc_socket(NULL, vq->size * sizeof(struct async_inflight_info),
|
|
RTE_CACHE_LINE_SIZE, node);
|
|
if (!async->pkts_info) {
|
|
VHOST_LOG_CONFIG(dev->ifname, ERR,
|
|
"failed to allocate async_pkts_info (qid: %d)\n",
|
|
vq->index);
|
|
goto out_free_async;
|
|
}
|
|
|
|
async->pkts_cmpl_flag = rte_zmalloc_socket(NULL, vq->size * sizeof(bool),
|
|
RTE_CACHE_LINE_SIZE, node);
|
|
if (!async->pkts_cmpl_flag) {
|
|
VHOST_LOG_CONFIG(dev->ifname, ERR,
|
|
"failed to allocate async pkts_cmpl_flag (qid: %d)\n",
|
|
vq->index);
|
|
goto out_free_async;
|
|
}
|
|
|
|
if (vq_is_packed(dev)) {
|
|
async->buffers_packed = rte_malloc_socket(NULL,
|
|
vq->size * sizeof(struct vring_used_elem_packed),
|
|
RTE_CACHE_LINE_SIZE, node);
|
|
if (!async->buffers_packed) {
|
|
VHOST_LOG_CONFIG(dev->ifname, ERR,
|
|
"failed to allocate async buffers (qid: %d)\n",
|
|
vq->index);
|
|
goto out_free_inflight;
|
|
}
|
|
} else {
|
|
async->descs_split = rte_malloc_socket(NULL,
|
|
vq->size * sizeof(struct vring_used_elem),
|
|
RTE_CACHE_LINE_SIZE, node);
|
|
if (!async->descs_split) {
|
|
VHOST_LOG_CONFIG(dev->ifname, ERR,
|
|
"failed to allocate async descs (qid: %d)\n",
|
|
vq->index);
|
|
goto out_free_inflight;
|
|
}
|
|
}
|
|
|
|
vq->async = async;
|
|
|
|
return 0;
|
|
out_free_inflight:
|
|
rte_free(async->pkts_info);
|
|
out_free_async:
|
|
rte_free(async);
|
|
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
rte_vhost_async_channel_register(int vid, uint16_t queue_id)
|
|
{
|
|
struct vhost_virtqueue *vq;
|
|
struct virtio_net *dev = get_device(vid);
|
|
int ret;
|
|
|
|
if (dev == NULL)
|
|
return -1;
|
|
|
|
if (queue_id >= VHOST_MAX_VRING)
|
|
return -1;
|
|
|
|
vq = dev->virtqueue[queue_id];
|
|
|
|
if (unlikely(vq == NULL || !dev->async_copy))
|
|
return -1;
|
|
|
|
rte_spinlock_lock(&vq->access_lock);
|
|
ret = async_channel_register(dev, vq);
|
|
rte_spinlock_unlock(&vq->access_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
rte_vhost_async_channel_register_thread_unsafe(int vid, uint16_t queue_id)
|
|
{
|
|
struct vhost_virtqueue *vq;
|
|
struct virtio_net *dev = get_device(vid);
|
|
|
|
if (dev == NULL)
|
|
return -1;
|
|
|
|
if (queue_id >= VHOST_MAX_VRING)
|
|
return -1;
|
|
|
|
vq = dev->virtqueue[queue_id];
|
|
|
|
if (unlikely(vq == NULL || !dev->async_copy))
|
|
return -1;
|
|
|
|
if (unlikely(!rte_spinlock_is_locked(&vq->access_lock))) {
|
|
VHOST_LOG_CONFIG(dev->ifname, ERR, "%s() called without access lock taken.\n",
|
|
__func__);
|
|
return -1;
|
|
}
|
|
|
|
return async_channel_register(dev, vq);
|
|
}
|
|
|
|
int
|
|
rte_vhost_async_channel_unregister(int vid, uint16_t queue_id)
|
|
{
|
|
struct vhost_virtqueue *vq;
|
|
struct virtio_net *dev = get_device(vid);
|
|
int ret = -1;
|
|
|
|
if (dev == NULL)
|
|
return ret;
|
|
|
|
if (queue_id >= VHOST_MAX_VRING)
|
|
return ret;
|
|
|
|
vq = dev->virtqueue[queue_id];
|
|
|
|
if (vq == NULL)
|
|
return ret;
|
|
|
|
if (!rte_spinlock_trylock(&vq->access_lock)) {
|
|
VHOST_LOG_CONFIG(dev->ifname, ERR,
|
|
"failed to unregister async channel, virtqueue busy.\n");
|
|
return ret;
|
|
}
|
|
|
|
if (!vq->async) {
|
|
ret = 0;
|
|
} else if (vq->async->pkts_inflight_n) {
|
|
VHOST_LOG_CONFIG(dev->ifname, ERR, "failed to unregister async channel.\n");
|
|
VHOST_LOG_CONFIG(dev->ifname, ERR,
|
|
"inflight packets must be completed before unregistration.\n");
|
|
} else {
|
|
vhost_free_async_mem(vq);
|
|
ret = 0;
|
|
}
|
|
|
|
rte_spinlock_unlock(&vq->access_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
rte_vhost_async_channel_unregister_thread_unsafe(int vid, uint16_t queue_id)
|
|
{
|
|
struct vhost_virtqueue *vq;
|
|
struct virtio_net *dev = get_device(vid);
|
|
|
|
if (dev == NULL)
|
|
return -1;
|
|
|
|
if (queue_id >= VHOST_MAX_VRING)
|
|
return -1;
|
|
|
|
vq = dev->virtqueue[queue_id];
|
|
|
|
if (vq == NULL)
|
|
return -1;
|
|
|
|
if (unlikely(!rte_spinlock_is_locked(&vq->access_lock))) {
|
|
VHOST_LOG_CONFIG(dev->ifname, ERR, "%s() called without access lock taken.\n",
|
|
__func__);
|
|
return -1;
|
|
}
|
|
|
|
if (!vq->async)
|
|
return 0;
|
|
|
|
if (vq->async->pkts_inflight_n) {
|
|
VHOST_LOG_CONFIG(dev->ifname, ERR, "failed to unregister async channel.\n");
|
|
VHOST_LOG_CONFIG(dev->ifname, ERR,
|
|
"inflight packets must be completed before unregistration.\n");
|
|
return -1;
|
|
}
|
|
|
|
vhost_free_async_mem(vq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_async_dma_configure(int16_t dma_id, uint16_t vchan_id)
|
|
{
|
|
struct rte_dma_info info;
|
|
void *pkts_cmpl_flag_addr;
|
|
uint16_t max_desc;
|
|
|
|
pthread_mutex_lock(&vhost_dma_lock);
|
|
|
|
if (!rte_dma_is_valid(dma_id)) {
|
|
VHOST_LOG_CONFIG("dma", ERR, "DMA %d is not found.\n", dma_id);
|
|
goto error;
|
|
}
|
|
|
|
if (rte_dma_info_get(dma_id, &info) != 0) {
|
|
VHOST_LOG_CONFIG("dma", ERR, "Fail to get DMA %d information.\n", dma_id);
|
|
goto error;
|
|
}
|
|
|
|
if (vchan_id >= info.max_vchans) {
|
|
VHOST_LOG_CONFIG("dma", ERR, "Invalid DMA %d vChannel %u.\n", dma_id, vchan_id);
|
|
goto error;
|
|
}
|
|
|
|
if (!dma_copy_track[dma_id].vchans) {
|
|
struct async_dma_vchan_info *vchans;
|
|
|
|
vchans = rte_zmalloc(NULL, sizeof(struct async_dma_vchan_info) * info.max_vchans,
|
|
RTE_CACHE_LINE_SIZE);
|
|
if (vchans == NULL) {
|
|
VHOST_LOG_CONFIG("dma", ERR,
|
|
"Failed to allocate vchans for DMA %d vChannel %u.\n",
|
|
dma_id, vchan_id);
|
|
goto error;
|
|
}
|
|
|
|
dma_copy_track[dma_id].vchans = vchans;
|
|
}
|
|
|
|
if (dma_copy_track[dma_id].vchans[vchan_id].pkts_cmpl_flag_addr) {
|
|
VHOST_LOG_CONFIG("dma", INFO, "DMA %d vChannel %u already registered.\n",
|
|
dma_id, vchan_id);
|
|
pthread_mutex_unlock(&vhost_dma_lock);
|
|
return 0;
|
|
}
|
|
|
|
max_desc = info.max_desc;
|
|
if (!rte_is_power_of_2(max_desc))
|
|
max_desc = rte_align32pow2(max_desc);
|
|
|
|
pkts_cmpl_flag_addr = rte_zmalloc(NULL, sizeof(bool *) * max_desc, RTE_CACHE_LINE_SIZE);
|
|
if (!pkts_cmpl_flag_addr) {
|
|
VHOST_LOG_CONFIG("dma", ERR,
|
|
"Failed to allocate pkts_cmpl_flag_addr for DMA %d vChannel %u.\n",
|
|
dma_id, vchan_id);
|
|
|
|
if (dma_copy_track[dma_id].nr_vchans == 0) {
|
|
rte_free(dma_copy_track[dma_id].vchans);
|
|
dma_copy_track[dma_id].vchans = NULL;
|
|
}
|
|
goto error;
|
|
}
|
|
|
|
dma_copy_track[dma_id].vchans[vchan_id].pkts_cmpl_flag_addr = pkts_cmpl_flag_addr;
|
|
dma_copy_track[dma_id].vchans[vchan_id].ring_size = max_desc;
|
|
dma_copy_track[dma_id].vchans[vchan_id].ring_mask = max_desc - 1;
|
|
dma_copy_track[dma_id].nr_vchans++;
|
|
|
|
pthread_mutex_unlock(&vhost_dma_lock);
|
|
return 0;
|
|
|
|
error:
|
|
pthread_mutex_unlock(&vhost_dma_lock);
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
rte_vhost_async_get_inflight(int vid, uint16_t queue_id)
|
|
{
|
|
struct vhost_virtqueue *vq;
|
|
struct virtio_net *dev = get_device(vid);
|
|
int ret = -1;
|
|
|
|
if (dev == NULL)
|
|
return ret;
|
|
|
|
if (queue_id >= VHOST_MAX_VRING)
|
|
return ret;
|
|
|
|
vq = dev->virtqueue[queue_id];
|
|
|
|
if (vq == NULL)
|
|
return ret;
|
|
|
|
if (!rte_spinlock_trylock(&vq->access_lock)) {
|
|
VHOST_LOG_CONFIG(dev->ifname, DEBUG,
|
|
"failed to check in-flight packets. virtqueue busy.\n");
|
|
return ret;
|
|
}
|
|
|
|
if (vq->async)
|
|
ret = vq->async->pkts_inflight_n;
|
|
|
|
rte_spinlock_unlock(&vq->access_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
rte_vhost_async_get_inflight_thread_unsafe(int vid, uint16_t queue_id)
|
|
{
|
|
struct vhost_virtqueue *vq;
|
|
struct virtio_net *dev = get_device(vid);
|
|
int ret = -1;
|
|
|
|
if (dev == NULL)
|
|
return ret;
|
|
|
|
if (queue_id >= VHOST_MAX_VRING)
|
|
return ret;
|
|
|
|
vq = dev->virtqueue[queue_id];
|
|
|
|
if (vq == NULL)
|
|
return ret;
|
|
|
|
if (unlikely(!rte_spinlock_is_locked(&vq->access_lock))) {
|
|
VHOST_LOG_CONFIG(dev->ifname, ERR, "%s() called without access lock taken.\n",
|
|
__func__);
|
|
return -1;
|
|
}
|
|
|
|
if (!vq->async)
|
|
return ret;
|
|
|
|
ret = vq->async->pkts_inflight_n;
|
|
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
rte_vhost_get_monitor_addr(int vid, uint16_t queue_id,
|
|
struct rte_vhost_power_monitor_cond *pmc)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
struct vhost_virtqueue *vq;
|
|
|
|
if (dev == NULL)
|
|
return -1;
|
|
if (queue_id >= VHOST_MAX_VRING)
|
|
return -1;
|
|
|
|
vq = dev->virtqueue[queue_id];
|
|
if (vq == NULL)
|
|
return -1;
|
|
|
|
if (vq_is_packed(dev)) {
|
|
struct vring_packed_desc *desc;
|
|
desc = vq->desc_packed;
|
|
pmc->addr = &desc[vq->last_avail_idx].flags;
|
|
if (vq->avail_wrap_counter)
|
|
pmc->val = VRING_DESC_F_AVAIL;
|
|
else
|
|
pmc->val = VRING_DESC_F_USED;
|
|
pmc->mask = VRING_DESC_F_AVAIL | VRING_DESC_F_USED;
|
|
pmc->size = sizeof(desc[vq->last_avail_idx].flags);
|
|
pmc->match = 1;
|
|
} else {
|
|
pmc->addr = &vq->avail->idx;
|
|
pmc->val = vq->last_avail_idx & (vq->size - 1);
|
|
pmc->mask = vq->size - 1;
|
|
pmc->size = sizeof(vq->avail->idx);
|
|
pmc->match = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int
|
|
rte_vhost_vring_stats_get_names(int vid, uint16_t queue_id,
|
|
struct rte_vhost_stat_name *name, unsigned int size)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
unsigned int i;
|
|
|
|
if (dev == NULL)
|
|
return -1;
|
|
|
|
if (queue_id >= dev->nr_vring)
|
|
return -1;
|
|
|
|
if (!(dev->flags & VIRTIO_DEV_STATS_ENABLED))
|
|
return -1;
|
|
|
|
if (name == NULL || size < VHOST_NB_VQ_STATS)
|
|
return VHOST_NB_VQ_STATS;
|
|
|
|
for (i = 0; i < VHOST_NB_VQ_STATS; i++)
|
|
snprintf(name[i].name, sizeof(name[i].name), "%s_q%u_%s",
|
|
(queue_id & 1) ? "rx" : "tx",
|
|
queue_id / 2, vhost_vq_stat_strings[i].name);
|
|
|
|
return VHOST_NB_VQ_STATS;
|
|
}
|
|
|
|
int
|
|
rte_vhost_vring_stats_get(int vid, uint16_t queue_id,
|
|
struct rte_vhost_stat *stats, unsigned int n)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
struct vhost_virtqueue *vq;
|
|
unsigned int i;
|
|
|
|
if (dev == NULL)
|
|
return -1;
|
|
|
|
if (queue_id >= dev->nr_vring)
|
|
return -1;
|
|
|
|
if (!(dev->flags & VIRTIO_DEV_STATS_ENABLED))
|
|
return -1;
|
|
|
|
if (stats == NULL || n < VHOST_NB_VQ_STATS)
|
|
return VHOST_NB_VQ_STATS;
|
|
|
|
vq = dev->virtqueue[queue_id];
|
|
|
|
rte_spinlock_lock(&vq->access_lock);
|
|
for (i = 0; i < VHOST_NB_VQ_STATS; i++) {
|
|
stats[i].value =
|
|
*(uint64_t *)(((char *)vq) + vhost_vq_stat_strings[i].offset);
|
|
stats[i].id = i;
|
|
}
|
|
rte_spinlock_unlock(&vq->access_lock);
|
|
|
|
return VHOST_NB_VQ_STATS;
|
|
}
|
|
|
|
int rte_vhost_vring_stats_reset(int vid, uint16_t queue_id)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
struct vhost_virtqueue *vq;
|
|
|
|
if (dev == NULL)
|
|
return -1;
|
|
|
|
if (queue_id >= dev->nr_vring)
|
|
return -1;
|
|
|
|
if (!(dev->flags & VIRTIO_DEV_STATS_ENABLED))
|
|
return -1;
|
|
|
|
vq = dev->virtqueue[queue_id];
|
|
|
|
rte_spinlock_lock(&vq->access_lock);
|
|
memset(&vq->stats, 0, sizeof(vq->stats));
|
|
rte_spinlock_unlock(&vq->access_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rte_vhost_async_dma_unconfigure(int16_t dma_id, uint16_t vchan_id)
|
|
{
|
|
struct rte_dma_info info;
|
|
struct rte_dma_stats stats = { 0 };
|
|
|
|
pthread_mutex_lock(&vhost_dma_lock);
|
|
|
|
if (!rte_dma_is_valid(dma_id)) {
|
|
VHOST_LOG_CONFIG("dma", ERR, "DMA %d is not found.\n", dma_id);
|
|
goto error;
|
|
}
|
|
|
|
if (rte_dma_info_get(dma_id, &info) != 0) {
|
|
VHOST_LOG_CONFIG("dma", ERR, "Fail to get DMA %d information.\n", dma_id);
|
|
goto error;
|
|
}
|
|
|
|
if (vchan_id >= info.max_vchans || !dma_copy_track[dma_id].vchans ||
|
|
!dma_copy_track[dma_id].vchans[vchan_id].pkts_cmpl_flag_addr) {
|
|
VHOST_LOG_CONFIG("dma", ERR, "Invalid channel %d:%u.\n", dma_id, vchan_id);
|
|
goto error;
|
|
}
|
|
|
|
if (rte_dma_stats_get(dma_id, vchan_id, &stats) != 0) {
|
|
VHOST_LOG_CONFIG("dma", ERR,
|
|
"Failed to get stats for DMA %d vChannel %u.\n", dma_id, vchan_id);
|
|
goto error;
|
|
}
|
|
|
|
if (stats.submitted - stats.completed != 0) {
|
|
VHOST_LOG_CONFIG("dma", ERR,
|
|
"Do not unconfigure when there are inflight packets.\n");
|
|
goto error;
|
|
}
|
|
|
|
rte_free(dma_copy_track[dma_id].vchans[vchan_id].pkts_cmpl_flag_addr);
|
|
dma_copy_track[dma_id].vchans[vchan_id].pkts_cmpl_flag_addr = NULL;
|
|
dma_copy_track[dma_id].nr_vchans--;
|
|
|
|
if (dma_copy_track[dma_id].nr_vchans == 0) {
|
|
rte_free(dma_copy_track[dma_id].vchans);
|
|
dma_copy_track[dma_id].vchans = NULL;
|
|
}
|
|
|
|
pthread_mutex_unlock(&vhost_dma_lock);
|
|
return 0;
|
|
|
|
error:
|
|
pthread_mutex_unlock(&vhost_dma_lock);
|
|
return -1;
|
|
}
|
|
|
|
RTE_LOG_REGISTER_SUFFIX(vhost_config_log_level, config, INFO);
|
|
RTE_LOG_REGISTER_SUFFIX(vhost_data_log_level, data, WARNING);
|