From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34737) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aV0Ii-000740-OJ for qemu-devel@nongnu.org; Sun, 14 Feb 2016 12:17:39 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aV0If-00038l-L0 for qemu-devel@nongnu.org; Sun, 14 Feb 2016 12:17:36 -0500 Received: from mail-wm0-x243.google.com ([2a00:1450:400c:c09::243]:35985) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aV0If-00037Q-7f for qemu-devel@nongnu.org; Sun, 14 Feb 2016 12:17:33 -0500 Received: by mail-wm0-x243.google.com with SMTP id a4so6819190wme.3 for ; Sun, 14 Feb 2016 09:17:33 -0800 (PST) Sender: Paolo Bonzini From: Paolo Bonzini Date: Sun, 14 Feb 2016 18:17:11 +0100 Message-Id: <1455470231-5223-9-git-send-email-pbonzini@redhat.com> In-Reply-To: <1455470231-5223-1-git-send-email-pbonzini@redhat.com> References: <1455470231-5223-1-git-send-email-pbonzini@redhat.com> Subject: [Qemu-devel] [PATCH 8/8] vring: remove List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: stefanha@redhat.com, mst@redhat.com Signed-off-by: Paolo Bonzini --- hw/virtio/Makefile.objs | 1 - hw/virtio/dataplane/Makefile.objs | 1 - hw/virtio/dataplane/vring.c | 548 -------------------------- include/hw/virtio/dataplane/vring-accessors.h | 75 ---- include/hw/virtio/dataplane/vring.h | 51 --- trace-events | 3 - 6 files changed, 679 deletions(-) delete mode 100644 hw/virtio/dataplane/Makefile.objs delete mode 100644 hw/virtio/dataplane/vring.c delete mode 100644 include/hw/virtio/dataplane/vring-accessors.h delete mode 100644 include/hw/virtio/dataplane/vring.h diff --git a/hw/virtio/Makefile.objs b/hw/virtio/Makefile.objs index 19b224a..3e2b175 100644 --- a/hw/virtio/Makefile.objs +++ b/hw/virtio/Makefile.objs @@ -2,7 +2,6 @@ common-obj-y += virtio-rng.o common-obj-$(CONFIG_VIRTIO_PCI) += virtio-pci.o common-obj-y += virtio-bus.o common-obj-y += virtio-mmio.o -obj-$(CONFIG_VIRTIO) += dataplane/ obj-y += virtio.o virtio-balloon.o obj-$(CONFIG_LINUX) += vhost.o vhost-backend.o vhost-user.o diff --git a/hw/virtio/dataplane/Makefile.objs b/hw/virtio/dataplane/Makefile.objs deleted file mode 100644 index 753a9ca..0000000 --- a/hw/virtio/dataplane/Makefile.objs +++ /dev/null @@ -1 +0,0 @@ -obj-y += vring.o diff --git a/hw/virtio/dataplane/vring.c b/hw/virtio/dataplane/vring.c deleted file mode 100644 index 157e8b8..0000000 --- a/hw/virtio/dataplane/vring.c +++ /dev/null @@ -1,548 +0,0 @@ -/* Copyright 2012 Red Hat, Inc. - * Copyright IBM, Corp. 2012 - * - * Based on Linux 2.6.39 vhost code: - * Copyright (C) 2009 Red Hat, Inc. - * Copyright (C) 2006 Rusty Russell IBM Corporation - * - * Author: Michael S. Tsirkin - * Stefan Hajnoczi - * - * Inspiration, some code, and most witty comments come from - * Documentation/virtual/lguest/lguest.c, by Rusty Russell - * - * This work is licensed under the terms of the GNU GPL, version 2. - */ - -#include "qemu/osdep.h" -#include "trace.h" -#include "hw/hw.h" -#include "exec/memory.h" -#include "exec/address-spaces.h" -#include "hw/virtio/virtio-access.h" -#include "hw/virtio/dataplane/vring.h" -#include "hw/virtio/dataplane/vring-accessors.h" -#include "qemu/error-report.h" - -/* vring_map can be coupled with vring_unmap or (if you still have the - * value returned in *mr) memory_region_unref. - * Returns NULL on failure. - * Callers that can handle a partial mapping must supply mapped_len pointer to - * get the actual length mapped. - * Passing mapped_len == NULL requires either a full mapping or a failure. - */ -static void *vring_map(MemoryRegion **mr, hwaddr phys, - hwaddr len, hwaddr *mapped_len, - bool is_write) -{ - MemoryRegionSection section = memory_region_find(get_system_memory(), phys, len); - uint64_t size; - - if (!section.mr) { - goto out; - } - - size = int128_get64(section.size); - assert(size); - - /* Passing mapped_len == NULL requires either a full mapping or a failure. */ - if (!mapped_len && size < len) { - goto out; - } - - if (is_write && section.readonly) { - goto out; - } - if (!memory_region_is_ram(section.mr)) { - goto out; - } - - /* Ignore regions with dirty logging, we cannot mark them dirty */ - if (memory_region_get_dirty_log_mask(section.mr)) { - goto out; - } - - if (mapped_len) { - *mapped_len = MIN(size, len); - } - - *mr = section.mr; - return memory_region_get_ram_ptr(section.mr) + section.offset_within_region; - -out: - memory_region_unref(section.mr); - *mr = NULL; - return NULL; -} - -static void vring_unmap(void *buffer, bool is_write) -{ - ram_addr_t addr; - MemoryRegion *mr; - - mr = qemu_ram_addr_from_host(buffer, &addr); - memory_region_unref(mr); -} - -/* Map the guest's vring to host memory */ -bool vring_setup(Vring *vring, VirtIODevice *vdev, int n) -{ - struct vring *vr = &vring->vr; - hwaddr addr; - hwaddr size; - void *ptr; - - vring->broken = false; - vr->num = virtio_queue_get_num(vdev, n); - - addr = virtio_queue_get_desc_addr(vdev, n); - size = virtio_queue_get_desc_size(vdev, n); - /* Map the descriptor area as read only */ - ptr = vring_map(&vring->mr_desc, addr, size, NULL, false); - if (!ptr) { - error_report("Failed to map 0x%" HWADDR_PRIx " byte for vring desc " - "at 0x%" HWADDR_PRIx, - size, addr); - goto out_err_desc; - } - vr->desc = ptr; - - addr = virtio_queue_get_avail_addr(vdev, n); - size = virtio_queue_get_avail_size(vdev, n); - /* Add the size of the used_event_idx */ - size += sizeof(uint16_t); - /* Map the driver area as read only */ - ptr = vring_map(&vring->mr_avail, addr, size, NULL, false); - if (!ptr) { - error_report("Failed to map 0x%" HWADDR_PRIx " byte for vring avail " - "at 0x%" HWADDR_PRIx, - size, addr); - goto out_err_avail; - } - vr->avail = ptr; - - addr = virtio_queue_get_used_addr(vdev, n); - size = virtio_queue_get_used_size(vdev, n); - /* Add the size of the avail_event_idx */ - size += sizeof(uint16_t); - /* Map the device area as read-write */ - ptr = vring_map(&vring->mr_used, addr, size, NULL, true); - if (!ptr) { - error_report("Failed to map 0x%" HWADDR_PRIx " byte for vring used " - "at 0x%" HWADDR_PRIx, - size, addr); - goto out_err_used; - } - vr->used = ptr; - - vring->last_avail_idx = virtio_queue_get_last_avail_idx(vdev, n); - vring->last_used_idx = vring_get_used_idx(vdev, vring); - vring->signalled_used = 0; - vring->signalled_used_valid = false; - - trace_vring_setup(virtio_queue_get_ring_addr(vdev, n), - vring->vr.desc, vring->vr.avail, vring->vr.used); - return true; - -out_err_used: - memory_region_unref(vring->mr_avail); -out_err_avail: - memory_region_unref(vring->mr_desc); -out_err_desc: - vring->broken = true; - return false; -} - -void vring_teardown(Vring *vring, VirtIODevice *vdev, int n) -{ - virtio_queue_set_last_avail_idx(vdev, n, vring->last_avail_idx); - virtio_queue_invalidate_signalled_used(vdev, n); - - memory_region_unref(vring->mr_desc); - memory_region_unref(vring->mr_avail); - memory_region_unref(vring->mr_used); -} - -/* Disable guest->host notifies */ -void vring_disable_notification(VirtIODevice *vdev, Vring *vring) -{ - if (!virtio_vdev_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) { - vring_set_used_flags(vdev, vring, VRING_USED_F_NO_NOTIFY); - } -} - -/* Enable guest->host notifies - * - * Return true if the vring is empty, false if there are more requests. - */ -void vring_enable_notification(VirtIODevice *vdev, Vring *vring) -{ - if (virtio_vdev_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) { - vring_avail_event(&vring->vr) = vring->vr.avail->idx; - } else { - vring_clear_used_flags(vdev, vring, VRING_USED_F_NO_NOTIFY); - } - smp_mb(); /* ensure update is seen before reading avail_idx */ -} - -/* This is stolen from linux/drivers/vhost/vhost.c:vhost_notify() */ -bool vring_should_notify(VirtIODevice *vdev, Vring *vring) -{ - uint16_t old, new; - bool v; - /* Flush out used index updates. This is paired - * with the barrier that the Guest executes when enabling - * interrupts. */ - smp_mb(); - - if (virtio_vdev_has_feature(vdev, VIRTIO_F_NOTIFY_ON_EMPTY) && - unlikely(!vring_more_avail(vdev, vring))) { - return true; - } - - if (!virtio_vdev_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) { - return !(vring_get_avail_flags(vdev, vring) & - VRING_AVAIL_F_NO_INTERRUPT); - } - old = vring->signalled_used; - v = vring->signalled_used_valid; - new = vring->signalled_used = vring->last_used_idx; - vring->signalled_used_valid = true; - - if (unlikely(!v)) { - return true; - } - - return vring_need_event(virtio_tswap16(vdev, vring_used_event(&vring->vr)), - new, old); -} - -typedef struct VirtQueueCurrentElement { - unsigned in_num; - unsigned out_num; - hwaddr addr[VIRTQUEUE_MAX_SIZE]; - struct iovec iov[VIRTQUEUE_MAX_SIZE]; -} VirtQueueCurrentElement; - -static int get_desc(Vring *vring, VirtQueueCurrentElement *elem, - struct vring_desc *desc) -{ - unsigned *num; - struct iovec *iov; - hwaddr *addr; - MemoryRegion *mr; - hwaddr len; - - if (desc->flags & VRING_DESC_F_WRITE) { - num = &elem->in_num; - iov = &elem->iov[elem->out_num + *num]; - addr = &elem->addr[elem->out_num + *num]; - } else { - num = &elem->out_num; - iov = &elem->iov[*num]; - addr = &elem->addr[*num]; - - /* If it's an output descriptor, they're all supposed - * to come before any input descriptors. */ - if (unlikely(elem->in_num)) { - error_report("Descriptor has out after in"); - return -EFAULT; - } - } - - while (desc->len) { - /* Stop for now if there are not enough iovecs available. */ - if (*num >= VIRTQUEUE_MAX_SIZE) { - error_report("Invalid SG num: %u", *num); - return -EFAULT; - } - - iov->iov_base = vring_map(&mr, desc->addr, desc->len, &len, - desc->flags & VRING_DESC_F_WRITE); - if (!iov->iov_base) { - error_report("Failed to map descriptor addr %#" PRIx64 " len %u", - (uint64_t)desc->addr, desc->len); - return -EFAULT; - } - - /* The MemoryRegion is looked up again and unref'ed later, leave the - * ref in place. */ - (iov++)->iov_len = len; - *addr++ = desc->addr; - desc->len -= len; - desc->addr += len; - *num += 1; - } - - return 0; -} - -static void copy_in_vring_desc(VirtIODevice *vdev, - const struct vring_desc *guest, - struct vring_desc *host) -{ - host->addr = virtio_ldq_p(vdev, &guest->addr); - host->len = virtio_ldl_p(vdev, &guest->len); - host->flags = virtio_lduw_p(vdev, &guest->flags); - host->next = virtio_lduw_p(vdev, &guest->next); -} - -static bool read_vring_desc(VirtIODevice *vdev, - hwaddr guest, - struct vring_desc *host) -{ - if (address_space_read(&address_space_memory, guest, MEMTXATTRS_UNSPECIFIED, - (uint8_t *)host, sizeof *host)) { - return false; - } - host->addr = virtio_tswap64(vdev, host->addr); - host->len = virtio_tswap32(vdev, host->len); - host->flags = virtio_tswap16(vdev, host->flags); - host->next = virtio_tswap16(vdev, host->next); - return true; -} - -/* This is stolen from linux/drivers/vhost/vhost.c. */ -static int get_indirect(VirtIODevice *vdev, Vring *vring, - VirtQueueCurrentElement *cur_elem, - struct vring_desc *indirect) -{ - struct vring_desc desc; - unsigned int i = 0, count, found = 0; - int ret; - - /* Sanity check */ - if (unlikely(indirect->len % sizeof(desc))) { - error_report("Invalid length in indirect descriptor: " - "len %#x not multiple of %#zx", - indirect->len, sizeof(desc)); - vring->broken = true; - return -EFAULT; - } - - count = indirect->len / sizeof(desc); - /* Buffers are chained via a 16 bit next field, so - * we can have at most 2^16 of these. */ - if (unlikely(count > USHRT_MAX + 1)) { - error_report("Indirect buffer length too big: %d", indirect->len); - vring->broken = true; - return -EFAULT; - } - - do { - /* Translate indirect descriptor */ - if (!read_vring_desc(vdev, indirect->addr + found * sizeof(desc), - &desc)) { - error_report("Failed to read indirect descriptor " - "addr %#" PRIx64 " len %zu", - (uint64_t)indirect->addr + found * sizeof(desc), - sizeof(desc)); - vring->broken = true; - return -EFAULT; - } - - /* Ensure descriptor has been loaded before accessing fields */ - barrier(); /* read_barrier_depends(); */ - - if (unlikely(++found > count)) { - error_report("Loop detected: last one at %u " - "indirect size %u", i, count); - vring->broken = true; - return -EFAULT; - } - - if (unlikely(desc.flags & VRING_DESC_F_INDIRECT)) { - error_report("Nested indirect descriptor"); - vring->broken = true; - return -EFAULT; - } - - ret = get_desc(vring, cur_elem, &desc); - if (ret < 0) { - vring->broken |= (ret == -EFAULT); - return ret; - } - i = desc.next; - } while (desc.flags & VRING_DESC_F_NEXT); - return 0; -} - -static void vring_unmap_element(VirtQueueElement *elem) -{ - int i; - - /* This assumes that the iovecs, if changed, are never moved past - * the end of the valid area. This is true if iovec manipulations - * are done with iov_discard_front and iov_discard_back. - */ - for (i = 0; i < elem->out_num; i++) { - vring_unmap(elem->out_sg[i].iov_base, false); - } - - for (i = 0; i < elem->in_num; i++) { - vring_unmap(elem->in_sg[i].iov_base, true); - } -} - -/* This looks in the virtqueue and for the first available buffer, and converts - * it to an iovec for convenient access. Since descriptors consist of some - * number of output then some number of input descriptors, it's actually two - * iovecs, but we pack them into one and note how many of each there were. - * - * This function returns the descriptor number found, or vq->num (which is - * never a valid descriptor number) if none was found. A negative code is - * returned on error. - * - * Stolen from linux/drivers/vhost/vhost.c. - */ -void *vring_pop(VirtIODevice *vdev, Vring *vring, size_t sz) -{ - struct vring_desc desc; - unsigned int i, head, found = 0, num = vring->vr.num; - uint16_t avail_idx, last_avail_idx; - VirtQueueCurrentElement cur_elem; - VirtQueueElement *elem = NULL; - int ret; - - /* If there was a fatal error then refuse operation */ - if (vring->broken) { - ret = -EFAULT; - goto out; - } - - cur_elem.in_num = cur_elem.out_num = 0; - - /* Check it isn't doing very strange things with descriptor numbers. */ - last_avail_idx = vring->last_avail_idx; - avail_idx = vring_get_avail_idx(vdev, vring); - barrier(); /* load indices now and not again later */ - - if (unlikely((uint16_t)(avail_idx - last_avail_idx) > num)) { - error_report("Guest moved used index from %u to %u", - last_avail_idx, avail_idx); - ret = -EFAULT; - goto out; - } - - /* If there's nothing new since last we looked. */ - if (avail_idx == last_avail_idx) { - ret = -EAGAIN; - goto out; - } - - /* Only get avail ring entries after they have been exposed by guest. */ - smp_rmb(); - - /* Grab the next descriptor number they're advertising, and increment - * the index we've seen. */ - head = vring_get_avail_ring(vdev, vring, last_avail_idx % num); - - /* If their number is silly, that's an error. */ - if (unlikely(head >= num)) { - error_report("Guest says index %u > %u is available", head, num); - ret = -EFAULT; - goto out; - } - - i = head; - do { - if (unlikely(i >= num)) { - error_report("Desc index is %u > %u, head = %u", i, num, head); - ret = -EFAULT; - goto out; - } - if (unlikely(++found > num)) { - error_report("Loop detected: last one at %u vq size %u head %u", - i, num, head); - ret = -EFAULT; - goto out; - } - copy_in_vring_desc(vdev, &vring->vr.desc[i], &desc); - - /* Ensure descriptor is loaded before accessing fields */ - barrier(); - - if (desc.flags & VRING_DESC_F_INDIRECT) { - ret = get_indirect(vdev, vring, &cur_elem, &desc); - if (ret < 0) { - goto out; - } - continue; - } - - ret = get_desc(vring, &cur_elem, &desc); - if (ret < 0) { - goto out; - } - - i = desc.next; - } while (desc.flags & VRING_DESC_F_NEXT); - - /* On success, increment avail index. */ - vring->last_avail_idx++; - if (virtio_vdev_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) { - vring_avail_event(&vring->vr) = - virtio_tswap16(vdev, vring->last_avail_idx); - } - - /* Now copy what we have collected and mapped */ - elem = virtqueue_alloc_element(sz, cur_elem.out_num, cur_elem.in_num); - elem->index = head; - for (i = 0; i < cur_elem.out_num; i++) { - elem->out_addr[i] = cur_elem.addr[i]; - elem->out_sg[i] = cur_elem.iov[i]; - } - for (i = 0; i < cur_elem.in_num; i++) { - elem->in_addr[i] = cur_elem.addr[cur_elem.out_num + i]; - elem->in_sg[i] = cur_elem.iov[cur_elem.out_num + i]; - } - - return elem; - -out: - assert(ret < 0); - if (ret == -EFAULT) { - vring->broken = true; - } - - for (i = 0; i < cur_elem.out_num + cur_elem.in_num; i++) { - vring_unmap(cur_elem.iov[i].iov_base, false); - } - - g_free(elem); - return NULL; -} - -/* After we've used one of their buffers, we tell them about it. - * - * Stolen from linux/drivers/vhost/vhost.c. - */ -void vring_push(VirtIODevice *vdev, Vring *vring, VirtQueueElement *elem, - int len) -{ - unsigned int head = elem->index; - uint16_t new; - - vring_unmap_element(elem); - - /* Don't touch vring if a fatal error occurred */ - if (vring->broken) { - return; - } - - /* The virtqueue contains a ring of used buffers. Get a pointer to the - * next entry in that used ring. */ - vring_set_used_ring_id(vdev, vring, vring->last_used_idx % vring->vr.num, - head); - vring_set_used_ring_len(vdev, vring, vring->last_used_idx % vring->vr.num, - len); - - /* Make sure buffer is written before we update index. */ - smp_wmb(); - - new = ++vring->last_used_idx; - vring_set_used_idx(vdev, vring, new); - if (unlikely((int16_t)(new - vring->signalled_used) < (uint16_t)1)) { - vring->signalled_used_valid = false; - } -} diff --git a/include/hw/virtio/dataplane/vring-accessors.h b/include/hw/virtio/dataplane/vring-accessors.h deleted file mode 100644 index 815c19b..0000000 --- a/include/hw/virtio/dataplane/vring-accessors.h +++ /dev/null @@ -1,75 +0,0 @@ -#ifndef VRING_ACCESSORS_H -#define VRING_ACCESSORS_H - -#include "standard-headers/linux/virtio_ring.h" -#include "hw/virtio/virtio.h" -#include "hw/virtio/virtio-access.h" - -static inline uint16_t vring_get_used_idx(VirtIODevice *vdev, Vring *vring) -{ - return virtio_tswap16(vdev, vring->vr.used->idx); -} - -static inline void vring_set_used_idx(VirtIODevice *vdev, Vring *vring, - uint16_t idx) -{ - vring->vr.used->idx = virtio_tswap16(vdev, idx); -} - -static inline uint16_t vring_get_avail_idx(VirtIODevice *vdev, Vring *vring) -{ - return virtio_tswap16(vdev, vring->vr.avail->idx); -} - -static inline uint16_t vring_get_avail_ring(VirtIODevice *vdev, Vring *vring, - int i) -{ - return virtio_tswap16(vdev, vring->vr.avail->ring[i]); -} - -static inline void vring_set_used_ring_id(VirtIODevice *vdev, Vring *vring, - int i, uint32_t id) -{ - vring->vr.used->ring[i].id = virtio_tswap32(vdev, id); -} - -static inline void vring_set_used_ring_len(VirtIODevice *vdev, Vring *vring, - int i, uint32_t len) -{ - vring->vr.used->ring[i].len = virtio_tswap32(vdev, len); -} - -static inline uint16_t vring_get_used_flags(VirtIODevice *vdev, Vring *vring) -{ - return virtio_tswap16(vdev, vring->vr.used->flags); -} - -static inline uint16_t vring_get_avail_flags(VirtIODevice *vdev, Vring *vring) -{ - return virtio_tswap16(vdev, vring->vr.avail->flags); -} - -static inline void vring_set_used_flags(VirtIODevice *vdev, Vring *vring, - uint16_t flags) -{ - vring->vr.used->flags |= virtio_tswap16(vdev, flags); -} - -static inline void vring_clear_used_flags(VirtIODevice *vdev, Vring *vring, - uint16_t flags) -{ - vring->vr.used->flags &= virtio_tswap16(vdev, ~flags); -} - -static inline unsigned int vring_get_num(Vring *vring) -{ - return vring->vr.num; -} - -/* Are there more descriptors available? */ -static inline bool vring_more_avail(VirtIODevice *vdev, Vring *vring) -{ - return vring_get_avail_idx(vdev, vring) != vring->last_avail_idx; -} - -#endif diff --git a/include/hw/virtio/dataplane/vring.h b/include/hw/virtio/dataplane/vring.h deleted file mode 100644 index e1c2a65..0000000 --- a/include/hw/virtio/dataplane/vring.h +++ /dev/null @@ -1,51 +0,0 @@ -/* Copyright 2012 Red Hat, Inc. and/or its affiliates - * Copyright IBM, Corp. 2012 - * - * Based on Linux 2.6.39 vhost code: - * Copyright (C) 2009 Red Hat, Inc. - * Copyright (C) 2006 Rusty Russell IBM Corporation - * - * Author: Michael S. Tsirkin - * Stefan Hajnoczi - * - * Inspiration, some code, and most witty comments come from - * Documentation/virtual/lguest/lguest.c, by Rusty Russell - * - * This work is licensed under the terms of the GNU GPL, version 2. - */ - -#ifndef VRING_H -#define VRING_H - -#include "qemu-common.h" -#include "standard-headers/linux/virtio_ring.h" -#include "hw/virtio/virtio.h" - -typedef struct { - MemoryRegion *mr_desc; /* memory region for the vring desc */ - MemoryRegion *mr_avail; /* memory region for the vring avail */ - MemoryRegion *mr_used; /* memory region for the vring used */ - struct vring vr; /* virtqueue vring mapped to host memory */ - uint16_t last_avail_idx; /* last processed avail ring index */ - uint16_t last_used_idx; /* last processed used ring index */ - uint16_t signalled_used; /* EVENT_IDX state */ - bool signalled_used_valid; - bool broken; /* was there a fatal error? */ -} Vring; - -/* Fail future vring_pop() and vring_push() calls until reset */ -static inline void vring_set_broken(Vring *vring) -{ - vring->broken = true; -} - -bool vring_setup(Vring *vring, VirtIODevice *vdev, int n); -void vring_teardown(Vring *vring, VirtIODevice *vdev, int n); -void vring_disable_notification(VirtIODevice *vdev, Vring *vring); -void vring_enable_notification(VirtIODevice *vdev, Vring *vring); -bool vring_should_notify(VirtIODevice *vdev, Vring *vring); -void *vring_pop(VirtIODevice *vdev, Vring *vring, size_t sz); -void vring_push(VirtIODevice *vdev, Vring *vring, VirtQueueElement *elem, - int len); - -#endif /* VRING_H */ diff --git a/trace-events b/trace-events index f986c81..61a133f 100644 --- a/trace-events +++ b/trace-events @@ -127,9 +127,6 @@ virtio_blk_data_plane_start(void *s) "dataplane %p" virtio_blk_data_plane_stop(void *s) "dataplane %p" virtio_blk_data_plane_process_request(void *s, unsigned int out_num, unsigned int in_num, unsigned int head) "dataplane %p out_num %u in_num %u head %u" -# hw/virtio/dataplane/vring.c -vring_setup(uint64_t physical, void *desc, void *avail, void *used) "vring physical %#"PRIx64" desc %p avail %p used %p" - # thread-pool.c thread_pool_submit(void *pool, void *req, void *opaque) "pool %p req %p opaque %p" thread_pool_complete(void *pool, void *req, void *opaque, int ret) "pool %p req %p opaque %p ret %d" -- 1.8.3.1