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-rw-r--r--src/vnet/devices/virtio/vhost_user.c2613
1 files changed, 0 insertions, 2613 deletions
diff --git a/src/vnet/devices/virtio/vhost_user.c b/src/vnet/devices/virtio/vhost_user.c
deleted file mode 100644
index b6e0806db90..00000000000
--- a/src/vnet/devices/virtio/vhost_user.c
+++ /dev/null
@@ -1,2613 +0,0 @@
-/*
- *------------------------------------------------------------------
- * vhost.c - vhost-user
- *
- * Copyright (c) 2014-2018 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *------------------------------------------------------------------
- */
-
-#include <fcntl.h> /* for open */
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/uio.h> /* for iovec */
-#include <netinet/in.h>
-#include <sys/vfs.h>
-
-#include <linux/if_arp.h>
-#include <linux/if_tun.h>
-
-#include <vlib/vlib.h>
-#include <vlib/unix/unix.h>
-
-#include <vnet/ethernet/ethernet.h>
-#include <vnet/devices/devices.h>
-#include <vnet/feature/feature.h>
-#include <vnet/interface/rx_queue_funcs.h>
-#include <vnet/interface/tx_queue_funcs.h>
-
-#include <vnet/devices/virtio/vhost_user.h>
-#include <vnet/devices/virtio/vhost_user_inline.h>
-
-/**
- * @file
- * @brief vHost User Device Driver.
- *
- * This file contains the source code for vHost User interface.
- */
-
-
-vlib_node_registration_t vhost_user_send_interrupt_node;
-
-/* *INDENT-OFF* */
-vhost_user_main_t vhost_user_main = {
- .mtu_bytes = 1518,
-};
-
-VNET_HW_INTERFACE_CLASS (vhost_interface_class, static) = {
- .name = "vhost-user",
-};
-/* *INDENT-ON* */
-
-static long
-get_huge_page_size (int fd)
-{
- struct statfs s;
- fstatfs (fd, &s);
- return s.f_bsize;
-}
-
-static void
-unmap_all_mem_regions (vhost_user_intf_t * vui)
-{
- int i, r, q;
- vhost_user_vring_t *vq;
-
- for (i = 0; i < vui->nregions; i++)
- {
- if (vui->region_mmap_addr[i] != MAP_FAILED)
- {
-
- long page_sz = get_huge_page_size (vui->region_mmap_fd[i]);
-
- ssize_t map_sz = (vui->regions[i].memory_size +
- vui->regions[i].mmap_offset +
- page_sz - 1) & ~(page_sz - 1);
-
- r =
- munmap (vui->region_mmap_addr[i] - vui->regions[i].mmap_offset,
- map_sz);
-
- vu_log_debug (vui, "unmap memory region %d addr 0x%lx len 0x%lx "
- "page_sz 0x%x", i, vui->region_mmap_addr[i], map_sz,
- page_sz);
-
- vui->region_mmap_addr[i] = MAP_FAILED;
-
- if (r == -1)
- {
- vu_log_err (vui, "failed to unmap memory region (errno %d)",
- errno);
- }
- close (vui->region_mmap_fd[i]);
- }
- }
- vui->nregions = 0;
-
- FOR_ALL_VHOST_RX_TXQ (q, vui)
- {
- vq = &vui->vrings[q];
- vq->avail = 0;
- vq->used = 0;
- vq->desc = 0;
- }
-}
-
-static_always_inline void
-vhost_user_tx_thread_placement (vhost_user_intf_t *vui, u32 qid)
-{
- vnet_main_t *vnm = vnet_get_main ();
- vhost_user_vring_t *rxvq = &vui->vrings[qid];
- u32 q = qid >> 1, rxvq_count;
-
- ASSERT ((qid & 1) == 0);
- if (!rxvq->started || !rxvq->enabled)
- return;
-
- rxvq_count = (qid >> 1) + 1;
- if (rxvq->queue_index == ~0)
- {
- rxvq->queue_index =
- vnet_hw_if_register_tx_queue (vnm, vui->hw_if_index, q);
- rxvq->qid = q;
- }
-
- FOR_ALL_VHOST_RXQ (q, vui)
- {
- vhost_user_vring_t *rxvq = &vui->vrings[q];
- u32 qi = rxvq->queue_index;
-
- if (rxvq->queue_index == ~0)
- break;
- for (u32 i = 0; i < vlib_get_n_threads (); i++)
- vnet_hw_if_tx_queue_unassign_thread (vnm, qi, i);
- }
-
- for (u32 i = 0; i < vlib_get_n_threads (); i++)
- {
- vhost_user_vring_t *rxvq =
- &vui->vrings[VHOST_VRING_IDX_RX (i % rxvq_count)];
- u32 qi = rxvq->queue_index;
-
- vnet_hw_if_tx_queue_assign_thread (vnm, qi, i);
- }
-
- vnet_hw_if_update_runtime_data (vnm, vui->hw_if_index);
-}
-
-/**
- * @brief Unassign existing interface/queue to thread mappings and re-assign
- * new interface/queue to thread mappings
- */
-static_always_inline void
-vhost_user_rx_thread_placement (vhost_user_intf_t * vui, u32 qid)
-{
- vhost_user_vring_t *txvq = &vui->vrings[qid];
- vnet_main_t *vnm = vnet_get_main ();
- int rv;
- u32 q = qid >> 1;
- vhost_user_main_t *vum = &vhost_user_main;
-
- ASSERT ((qid & 1) == 1); // should be odd
- // Assign new queue mappings for the interface
- if (txvq->queue_index != ~0)
- return;
- vnet_hw_if_set_input_node (vnm, vui->hw_if_index,
- vhost_user_input_node.index);
- txvq->queue_index = vnet_hw_if_register_rx_queue (vnm, vui->hw_if_index, q,
- VNET_HW_IF_RXQ_THREAD_ANY);
- txvq->thread_index =
- vnet_hw_if_get_rx_queue_thread_index (vnm, txvq->queue_index);
-
- if (txvq->mode == VNET_HW_IF_RX_MODE_UNKNOWN)
- /* Set polling as the default */
- txvq->mode = VNET_HW_IF_RX_MODE_POLLING;
- if (txvq->mode == VNET_HW_IF_RX_MODE_POLLING)
- {
- vhost_cpu_t *cpu = vec_elt_at_index (vum->cpus, txvq->thread_index);
- /* Keep a polling queue count for each thread */
- cpu->polling_q_count++;
- }
- txvq->qid = q;
- rv = vnet_hw_if_set_rx_queue_mode (vnm, txvq->queue_index, txvq->mode);
- if (rv)
- vu_log_warn (vui, "unable to set rx mode for interface %d, "
- "queue %d: rc=%d", vui->hw_if_index, q, rv);
- vnet_hw_if_update_runtime_data (vnm, vui->hw_if_index);
-}
-
-/** @brief Returns whether at least one TX and one RX vring are enabled */
-static_always_inline int
-vhost_user_intf_ready (vhost_user_intf_t * vui)
-{
- int i, found[2] = { }; //RX + TX
-
- for (i = 0; i < vui->num_qid; i++)
- if (vui->vrings[i].started && vui->vrings[i].enabled)
- found[i & 1] = 1;
-
- return found[0] && found[1];
-}
-
-static_always_inline void
-vhost_user_update_iface_state (vhost_user_intf_t * vui)
-{
- /* if we have pointers to descriptor table, go up */
- int is_ready = vhost_user_intf_ready (vui);
- if (is_ready != vui->is_ready)
- {
- vu_log_debug (vui, "interface %d %s", vui->sw_if_index,
- is_ready ? "ready" : "down");
- if (vui->admin_up)
- vnet_hw_interface_set_flags (vnet_get_main (), vui->hw_if_index,
- is_ready ? VNET_HW_INTERFACE_FLAG_LINK_UP
- : 0);
- vui->is_ready = is_ready;
- }
-}
-
-static clib_error_t *
-vhost_user_callfd_read_ready (clib_file_t * uf)
-{
- __attribute__ ((unused)) int n;
- u8 buff[8];
-
- n = read (uf->file_descriptor, ((char *) &buff), 8);
-
- return 0;
-}
-
-static_always_inline void
-vhost_user_thread_placement (vhost_user_intf_t * vui, u32 qid)
-{
- if (qid & 1) // RX is odd, TX is even
- {
- if (vui->vrings[qid].queue_index == ~0)
- vhost_user_rx_thread_placement (vui, qid);
- }
- else
- vhost_user_tx_thread_placement (vui, qid);
-}
-
-static clib_error_t *
-vhost_user_kickfd_read_ready (clib_file_t * uf)
-{
- __attribute__ ((unused)) ssize_t n;
- u8 buff[8];
- vhost_user_main_t *vum = &vhost_user_main;
- vhost_user_intf_t *vui =
- pool_elt_at_index (vum->vhost_user_interfaces, uf->private_data >> 8);
- u32 qid = uf->private_data & 0xff;
- u32 is_txq = qid & 1;
- vhost_user_vring_t *vq = &vui->vrings[qid];
- vnet_main_t *vnm = vnet_get_main ();
-
- n = read (uf->file_descriptor, buff, 8);
- if (vq->started == 0)
- {
- vq->started = 1;
- vhost_user_thread_placement (vui, qid);
- vhost_user_update_iface_state (vui);
- if (is_txq)
- vnet_hw_if_set_rx_queue_file_index (vnm, vq->queue_index,
- vq->kickfd_idx);
- }
-
- if (is_txq && (vq->mode != VNET_HW_IF_RX_MODE_POLLING) &&
- vhost_user_intf_ready (vui))
- {
- vhost_cpu_t *cpu = vec_elt_at_index (vum->cpus, vq->thread_index);
- /*
- * If the thread has more than 1 queue and the other queue is in polling
- * mode, there is no need to trigger an interrupt
- */
- if (cpu->polling_q_count == 0)
- vnet_hw_if_rx_queue_set_int_pending (vnm, vq->queue_index);
- }
-
- return 0;
-}
-
-static_always_inline void
-vhost_user_vring_init (vhost_user_intf_t * vui, u32 qid)
-{
- vhost_user_vring_t *vring = &vui->vrings[qid];
-
- clib_memset (vring, 0, sizeof (*vring));
- vring->kickfd_idx = ~0;
- vring->callfd_idx = ~0;
- vring->errfd = -1;
- vring->qid = -1;
- vring->queue_index = ~0;
- vring->thread_index = ~0;
- vring->mode = VNET_HW_IF_RX_MODE_POLLING;
-
- clib_spinlock_init (&vring->vring_lock);
-
- /*
- * We have a bug with some qemu 2.5, and this may be a fix.
- * Feel like interpretation holy text, but this is from vhost-user.txt.
- * "
- * One queue pair is enabled initially. More queues are enabled
- * dynamically, by sending message VHOST_USER_SET_VRING_ENABLE.
- * "
- * Don't know who's right, but this is what DPDK does.
- */
- if (qid == 0 || qid == 1)
- vring->enabled = 1;
-}
-
-static_always_inline void
-vhost_user_vring_close (vhost_user_intf_t * vui, u32 qid)
-{
- vhost_user_vring_t *vring = &vui->vrings[qid];
-
- if (vring->kickfd_idx != ~0)
- {
- clib_file_t *uf = pool_elt_at_index (file_main.file_pool,
- vring->kickfd_idx);
- clib_file_del (&file_main, uf);
- vring->kickfd_idx = ~0;
- }
- if (vring->callfd_idx != ~0)
- {
- clib_file_t *uf = pool_elt_at_index (file_main.file_pool,
- vring->callfd_idx);
- clib_file_del (&file_main, uf);
- vring->callfd_idx = ~0;
- }
- if (vring->errfd != -1)
- {
- close (vring->errfd);
- vring->errfd = -1;
- }
-
- clib_spinlock_free (&vring->vring_lock);
-
- // save the needed information in vrings prior to being wiped out
- u16 q = vui->vrings[qid].qid;
- u32 queue_index = vui->vrings[qid].queue_index;
- u32 mode = vui->vrings[qid].mode;
- u32 thread_index = vui->vrings[qid].thread_index;
- vhost_user_vring_init (vui, qid);
- vui->vrings[qid].qid = q;
- vui->vrings[qid].queue_index = queue_index;
- vui->vrings[qid].mode = mode;
- vui->vrings[qid].thread_index = thread_index;
-}
-
-static_always_inline void
-vhost_user_if_disconnect (vhost_user_intf_t * vui)
-{
- vnet_main_t *vnm = vnet_get_main ();
- int q;
-
- vnet_hw_interface_set_flags (vnm, vui->hw_if_index, 0);
-
- if (vui->clib_file_index != ~0)
- {
- clib_file_del (&file_main, file_main.file_pool + vui->clib_file_index);
- vui->clib_file_index = ~0;
- }
-
- vui->is_ready = 0;
-
- FOR_ALL_VHOST_RX_TXQ (q, vui) { vhost_user_vring_close (vui, q); }
-
- unmap_all_mem_regions (vui);
- vu_log_debug (vui, "interface ifindex %d disconnected", vui->sw_if_index);
-}
-
-void
-vhost_user_set_operation_mode (vhost_user_intf_t *vui,
- vhost_user_vring_t *txvq)
-{
- if (vhost_user_is_packed_ring_supported (vui))
- {
- if (txvq->used_event)
- {
- if (txvq->mode == VNET_HW_IF_RX_MODE_POLLING)
- txvq->used_event->flags = VRING_EVENT_F_DISABLE;
- else
- txvq->used_event->flags = 0;
- }
- }
- else
- {
- if (txvq->used)
- {
- if (txvq->mode == VNET_HW_IF_RX_MODE_POLLING)
- txvq->used->flags = VRING_USED_F_NO_NOTIFY;
- else
- txvq->used->flags = 0;
- }
- }
-}
-
-static clib_error_t *
-vhost_user_socket_read (clib_file_t * uf)
-{
- int n, i, j;
- int fd, number_of_fds = 0;
- int fds[VHOST_MEMORY_MAX_NREGIONS];
- vhost_user_msg_t msg;
- struct msghdr mh;
- struct iovec iov[1];
- vhost_user_main_t *vum = &vhost_user_main;
- vhost_user_intf_t *vui;
- struct cmsghdr *cmsg;
- u8 q;
- clib_file_t template = { 0 };
- vnet_main_t *vnm = vnet_get_main ();
- vlib_main_t *vm = vlib_get_main ();
-
- vui = pool_elt_at_index (vum->vhost_user_interfaces, uf->private_data);
-
- char control[CMSG_SPACE (VHOST_MEMORY_MAX_NREGIONS * sizeof (int))];
-
- clib_memset (&mh, 0, sizeof (mh));
- clib_memset (control, 0, sizeof (control));
-
- for (i = 0; i < VHOST_MEMORY_MAX_NREGIONS; i++)
- fds[i] = -1;
-
- /* set the payload */
- iov[0].iov_base = (void *) &msg;
- iov[0].iov_len = VHOST_USER_MSG_HDR_SZ;
-
- mh.msg_iov = iov;
- mh.msg_iovlen = 1;
- mh.msg_control = control;
- mh.msg_controllen = sizeof (control);
-
- n = recvmsg (uf->file_descriptor, &mh, 0);
-
- if (n != VHOST_USER_MSG_HDR_SZ)
- {
- if (n == -1)
- {
- vu_log_debug (vui, "recvmsg returned error %d %s", errno,
- strerror (errno));
- }
- else
- {
- vu_log_debug (vui, "n (%d) != VHOST_USER_MSG_HDR_SZ (%d)",
- n, VHOST_USER_MSG_HDR_SZ);
- }
- goto close_socket;
- }
-
- if (mh.msg_flags & MSG_CTRUNC)
- {
- vu_log_debug (vui, "MSG_CTRUNC is set");
- goto close_socket;
- }
-
- cmsg = CMSG_FIRSTHDR (&mh);
-
- if (cmsg && (cmsg->cmsg_len > 0) && (cmsg->cmsg_level == SOL_SOCKET) &&
- (cmsg->cmsg_type == SCM_RIGHTS) &&
- (cmsg->cmsg_len - CMSG_LEN (0) <=
- VHOST_MEMORY_MAX_NREGIONS * sizeof (int)))
- {
- number_of_fds = (cmsg->cmsg_len - CMSG_LEN (0)) / sizeof (int);
- clib_memcpy_fast (fds, CMSG_DATA (cmsg), number_of_fds * sizeof (int));
- }
-
- /* version 1, no reply bit set */
- if ((msg.flags & 7) != 1)
- {
- vu_log_debug (vui, "malformed message received. closing socket");
- goto close_socket;
- }
-
- {
- int rv;
- rv =
- read (uf->file_descriptor, ((char *) &msg) + VHOST_USER_MSG_HDR_SZ,
- msg.size);
- if (rv < 0)
- {
- vu_log_debug (vui, "read failed %s", strerror (errno));
- goto close_socket;
- }
- else if (rv != msg.size)
- {
- vu_log_debug (vui, "message too short (read %dB should be %dB)", rv,
- msg.size);
- goto close_socket;
- }
- }
-
- switch (msg.request)
- {
- case VHOST_USER_GET_FEATURES:
- msg.flags |= 4;
- msg.u64 = VIRTIO_FEATURE (VIRTIO_NET_F_MRG_RXBUF) |
- VIRTIO_FEATURE (VIRTIO_NET_F_CTRL_VQ) |
- VIRTIO_FEATURE (VIRTIO_F_ANY_LAYOUT) |
- VIRTIO_FEATURE (VIRTIO_RING_F_INDIRECT_DESC) |
- VIRTIO_FEATURE (VHOST_F_LOG_ALL) |
- VIRTIO_FEATURE (VIRTIO_NET_F_GUEST_ANNOUNCE) |
- VIRTIO_FEATURE (VIRTIO_NET_F_MQ) |
- VIRTIO_FEATURE (VHOST_USER_F_PROTOCOL_FEATURES) |
- VIRTIO_FEATURE (VIRTIO_F_VERSION_1);
- msg.u64 &= vui->feature_mask;
-
- if (vui->enable_event_idx)
- msg.u64 |= VIRTIO_FEATURE (VIRTIO_RING_F_EVENT_IDX);
- if (vui->enable_gso)
- msg.u64 |= FEATURE_VIRTIO_NET_F_HOST_GUEST_TSO_FEATURE_BITS;
- if (vui->enable_packed)
- msg.u64 |= VIRTIO_FEATURE (VIRTIO_F_RING_PACKED);
-
- msg.size = sizeof (msg.u64);
- vu_log_debug (vui, "if %d msg VHOST_USER_GET_FEATURES - reply "
- "0x%016llx", vui->hw_if_index, msg.u64);
- n =
- send (uf->file_descriptor, &msg, VHOST_USER_MSG_HDR_SZ + msg.size, 0);
- if (n != (msg.size + VHOST_USER_MSG_HDR_SZ))
- {
- vu_log_debug (vui, "could not send message response");
- goto close_socket;
- }
- break;
-
- case VHOST_USER_SET_FEATURES:
- vu_log_debug (vui, "if %d msg VHOST_USER_SET_FEATURES features "
- "0x%016llx", vui->hw_if_index, msg.u64);
-
- vui->features = msg.u64;
-
- if (vui->features &
- (VIRTIO_FEATURE (VIRTIO_NET_F_MRG_RXBUF) |
- VIRTIO_FEATURE (VIRTIO_F_VERSION_1)))
- vui->virtio_net_hdr_sz = 12;
- else
- vui->virtio_net_hdr_sz = 10;
-
- vui->is_any_layout =
- (vui->features & VIRTIO_FEATURE (VIRTIO_F_ANY_LAYOUT)) ? 1 : 0;
-
- ASSERT (vui->virtio_net_hdr_sz < VLIB_BUFFER_PRE_DATA_SIZE);
- if (vui->enable_gso &&
- ((vui->features & FEATURE_VIRTIO_NET_F_HOST_GUEST_TSO_FEATURE_BITS)
- == FEATURE_VIRTIO_NET_F_HOST_GUEST_TSO_FEATURE_BITS))
- {
- vnet_hw_if_set_caps (vnm, vui->hw_if_index,
- VNET_HW_IF_CAP_TCP_GSO |
- VNET_HW_IF_CAP_TX_TCP_CKSUM |
- VNET_HW_IF_CAP_TX_UDP_CKSUM);
- }
- else
- {
- vnet_hw_if_unset_caps (vnm, vui->hw_if_index,
- VNET_HW_IF_CAP_TCP_GSO |
- VNET_HW_IF_CAP_L4_TX_CKSUM);
- }
- vnet_hw_interface_set_flags (vnm, vui->hw_if_index, 0);
- vui->is_ready = 0;
- vhost_user_update_iface_state (vui);
- break;
-
- case VHOST_USER_SET_MEM_TABLE:
- vu_log_debug (vui, "if %d msg VHOST_USER_SET_MEM_TABLE nregions %d",
- vui->hw_if_index, msg.memory.nregions);
-
- if ((msg.memory.nregions < 1) ||
- (msg.memory.nregions > VHOST_MEMORY_MAX_NREGIONS))
- {
- vu_log_debug (vui, "number of mem regions must be between 1 and %i",
- VHOST_MEMORY_MAX_NREGIONS);
- goto close_socket;
- }
-
- if (msg.memory.nregions != number_of_fds)
- {
- vu_log_debug (vui, "each memory region must have FD");
- goto close_socket;
- }
-
- /* Do the mmap without barrier sync */
- void *region_mmap_addr[VHOST_MEMORY_MAX_NREGIONS];
- for (i = 0; i < msg.memory.nregions; i++)
- {
- long page_sz = get_huge_page_size (fds[i]);
-
- /* align size to page */
- ssize_t map_sz = (msg.memory.regions[i].memory_size +
- msg.memory.regions[i].mmap_offset +
- page_sz - 1) & ~(page_sz - 1);
-
- region_mmap_addr[i] = mmap (0, map_sz, PROT_READ | PROT_WRITE,
- MAP_SHARED, fds[i], 0);
- if (region_mmap_addr[i] == MAP_FAILED)
- {
- vu_log_err (vui, "failed to map memory. errno is %d", errno);
- for (j = 0; j < i; j++)
- munmap (region_mmap_addr[j], map_sz);
- goto close_socket;
- }
- vu_log_debug (vui, "map memory region %d addr 0 len 0x%lx fd %d "
- "mapped 0x%lx page_sz 0x%x", i, map_sz, fds[i],
- region_mmap_addr[i], page_sz);
- }
-
- vlib_worker_thread_barrier_sync (vm);
- unmap_all_mem_regions (vui);
- for (i = 0; i < msg.memory.nregions; i++)
- {
- clib_memcpy_fast (&(vui->regions[i]), &msg.memory.regions[i],
- sizeof (vhost_user_memory_region_t));
-
- vui->region_mmap_addr[i] = region_mmap_addr[i];
- vui->region_guest_addr_lo[i] = vui->regions[i].guest_phys_addr;
- vui->region_guest_addr_hi[i] = vui->regions[i].guest_phys_addr +
- vui->regions[i].memory_size;
-
- vui->region_mmap_addr[i] += vui->regions[i].mmap_offset;
- vui->region_mmap_fd[i] = fds[i];
-
- vui->nregions++;
- }
-
- /*
- * Re-compute desc, used, and avail descriptor table if vring address
- * is set.
- */
- FOR_ALL_VHOST_RX_TXQ (q, vui)
- {
- if (vui->vrings[q].desc_user_addr && vui->vrings[q].used_user_addr &&
- vui->vrings[q].avail_user_addr)
- {
- vui->vrings[q].desc =
- map_user_mem (vui, vui->vrings[q].desc_user_addr);
- vui->vrings[q].used =
- map_user_mem (vui, vui->vrings[q].used_user_addr);
- vui->vrings[q].avail =
- map_user_mem (vui, vui->vrings[q].avail_user_addr);
- }
- }
- vlib_worker_thread_barrier_release (vm);
- break;
-
- case VHOST_USER_SET_VRING_NUM:
- vu_log_debug (vui, "if %d msg VHOST_USER_SET_VRING_NUM idx %d num %d",
- vui->hw_if_index, msg.state.index, msg.state.num);
-
- if ((msg.state.num > 32768) || /* maximum ring size is 32768 */
- (msg.state.num == 0) || /* it cannot be zero */
- ((msg.state.num - 1) & msg.state.num) || /* must be power of 2 */
- (msg.state.index >= vui->num_qid))
- {
- vu_log_debug (vui, "invalid VHOST_USER_SET_VRING_NUM: msg.state.num"
- " %d, msg.state.index %d, curruent max q %d",
- msg.state.num, msg.state.index, vui->num_qid);
- goto close_socket;
- }
- vui->vrings[msg.state.index].qsz_mask = msg.state.num - 1;
- break;
-
- case VHOST_USER_SET_VRING_ADDR:
- vu_log_debug (vui, "if %d msg VHOST_USER_SET_VRING_ADDR idx %d",
- vui->hw_if_index, msg.state.index);
-
- if (msg.state.index >= vui->num_qid)
- {
- vu_log_debug (vui, "invalid vring index VHOST_USER_SET_VRING_ADDR:"
- " %u >= %u", msg.state.index, vui->num_qid);
- goto close_socket;
- }
-
- if (msg.size < sizeof (msg.addr))
- {
- vu_log_debug (vui, "vhost message is too short (%d < %d)",
- msg.size, sizeof (msg.addr));
- goto close_socket;
- }
-
- vnet_virtio_vring_desc_t *desc =
- map_user_mem (vui, msg.addr.desc_user_addr);
- vnet_virtio_vring_used_t *used =
- map_user_mem (vui, msg.addr.used_user_addr);
- vnet_virtio_vring_avail_t *avail =
- map_user_mem (vui, msg.addr.avail_user_addr);
-
- if ((desc == NULL) || (used == NULL) || (avail == NULL))
- {
- vu_log_debug (vui, "failed to map user memory for hw_if_index %d",
- vui->hw_if_index);
- goto close_socket;
- }
-
- vui->vrings[msg.state.index].desc_user_addr = msg.addr.desc_user_addr;
- vui->vrings[msg.state.index].used_user_addr = msg.addr.used_user_addr;
- vui->vrings[msg.state.index].avail_user_addr = msg.addr.avail_user_addr;
-
- vlib_worker_thread_barrier_sync (vm);
- vui->vrings[msg.state.index].desc = desc;
- vui->vrings[msg.state.index].used = used;
- vui->vrings[msg.state.index].avail = avail;
-
- vui->vrings[msg.state.index].log_guest_addr = msg.addr.log_guest_addr;
- vui->vrings[msg.state.index].log_used =
- (msg.addr.flags & (1 << VHOST_VRING_F_LOG)) ? 1 : 0;
-
- /* Spec says: If VHOST_USER_F_PROTOCOL_FEATURES has not been negotiated,
- the ring is initialized in an enabled state. */
- if (!(vui->features & VIRTIO_FEATURE (VHOST_USER_F_PROTOCOL_FEATURES)))
- vui->vrings[msg.state.index].enabled = 1;
-
- vui->vrings[msg.state.index].last_used_idx =
- vui->vrings[msg.state.index].last_avail_idx =
- vui->vrings[msg.state.index].used->idx;
- vui->vrings[msg.state.index].last_kick =
- vui->vrings[msg.state.index].last_used_idx;
-
- /* tell driver that we want interrupts or not */
- vhost_user_set_operation_mode (vui, &vui->vrings[msg.state.index]);
- vlib_worker_thread_barrier_release (vm);
- vhost_user_update_iface_state (vui);
- break;
-
- case VHOST_USER_SET_OWNER:
- vu_log_debug (vui, "if %d msg VHOST_USER_SET_OWNER", vui->hw_if_index);
- break;
-
- case VHOST_USER_RESET_OWNER:
- vu_log_debug (vui, "if %d msg VHOST_USER_RESET_OWNER",
- vui->hw_if_index);
- break;
-
- case VHOST_USER_SET_VRING_CALL:
- vu_log_debug (vui, "if %d msg VHOST_USER_SET_VRING_CALL %d",
- vui->hw_if_index, msg.u64);
-
- q = (u8) (msg.u64 & 0xFF);
- if (vui->num_qid > q)
- {
- /* if there is old fd, delete and close it */
- if (vui->vrings[q].callfd_idx != ~0)
- {
- clib_file_t *uf = pool_elt_at_index (file_main.file_pool,
- vui->vrings[q].callfd_idx);
- clib_file_del (&file_main, uf);
- vui->vrings[q].callfd_idx = ~0;
- }
- }
- else if (vec_len (vui->vrings) > q)
- {
- /* grow vrings by pair (RX + TX) */
- vui->num_qid = (q & 1) ? (q + 1) : (q + 2);
- }
- else
- {
- u32 i, new_max_q, old_max_q = vec_len (vui->vrings);
-
- /*
- * Double the array size if it is less than 64 entries.
- * Slow down thereafter.
- */
- if (vec_len (vui->vrings) < (VHOST_VRING_INIT_MQ_PAIR_SZ << 3))
- new_max_q = vec_len (vui->vrings) << 1;
- else
- new_max_q = vec_len (vui->vrings) +
- (VHOST_VRING_INIT_MQ_PAIR_SZ << 2);
- if (new_max_q > (VHOST_VRING_MAX_MQ_PAIR_SZ << 1))
- new_max_q = (VHOST_VRING_MAX_MQ_PAIR_SZ << 1);
-
- /* sync with the worker threads, vrings may move due to realloc */
- vlib_worker_thread_barrier_sync (vm);
- vec_validate_aligned (vui->vrings, new_max_q - 1,
- CLIB_CACHE_LINE_BYTES);
- vlib_worker_thread_barrier_release (vm);
-
- for (i = old_max_q; i < vec_len (vui->vrings); i++)
- vhost_user_vring_init (vui, i);
-
- /* grow vrings by pair (RX + TX) */
- vui->num_qid = (q & 1) ? (q + 1) : (q + 2);
- }
-
- if (!(msg.u64 & VHOST_USER_VRING_NOFD_MASK))
- {
- if (number_of_fds != 1)
- {
- vu_log_debug (vui, "More than one fd received !");
- goto close_socket;
- }
-
- template.read_function = vhost_user_callfd_read_ready;
- template.file_descriptor = fds[0];
- template.private_data =
- ((vui - vhost_user_main.vhost_user_interfaces) << 8) + q;
- template.description = format (0, "vhost user");
- vui->vrings[q].callfd_idx = clib_file_add (&file_main, &template);
- }
- else
- vui->vrings[q].callfd_idx = ~0;
- break;
-
- case VHOST_USER_SET_VRING_KICK:
- vu_log_debug (vui, "if %d msg VHOST_USER_SET_VRING_KICK %d",
- vui->hw_if_index, msg.u64);
-
- q = (u8) (msg.u64 & 0xFF);
- if (q >= vui->num_qid)
- {
- vu_log_debug (vui, "invalid vring index VHOST_USER_SET_VRING_KICK:"
- " %u >= %u", q, vui->num_qid);
- goto close_socket;
- }
-
- if (vui->vrings[q].kickfd_idx != ~0)
- {
- clib_file_t *uf = pool_elt_at_index (file_main.file_pool,
- vui->vrings[q].kickfd_idx);
- clib_file_del (&file_main, uf);
- vui->vrings[q].kickfd_idx = ~0;
- }
-
- if (!(msg.u64 & VHOST_USER_VRING_NOFD_MASK))
- {
- if (number_of_fds != 1)
- {
- vu_log_debug (vui, "More than one fd received !");
- goto close_socket;
- }
-
- template.read_function = vhost_user_kickfd_read_ready;
- template.file_descriptor = fds[0];
- template.private_data =
- (((uword) (vui - vhost_user_main.vhost_user_interfaces)) << 8) +
- q;
- vui->vrings[q].kickfd_idx = clib_file_add (&file_main, &template);
- }
- else
- {
- //When no kickfd is set, the queue is initialized as started
- vui->vrings[q].kickfd_idx = ~0;
- vui->vrings[q].started = 1;
- vhost_user_thread_placement (vui, q);
- }
- vhost_user_update_iface_state (vui);
- break;
-
- case VHOST_USER_SET_VRING_ERR:
- vu_log_debug (vui, "if %d msg VHOST_USER_SET_VRING_ERR %d",
- vui->hw_if_index, msg.u64);
-
- q = (u8) (msg.u64 & 0xFF);
- if (q >= vui->num_qid)
- {
- vu_log_debug (vui, "invalid vring index VHOST_USER_SET_VRING_ERR:"
- " %u >= %u", q, vui->num_qid);
- goto close_socket;
- }
-
- if (vui->vrings[q].errfd != -1)
- close (vui->vrings[q].errfd);
-
- if (!(msg.u64 & VHOST_USER_VRING_NOFD_MASK))
- {
- if (number_of_fds != 1)
- goto close_socket;
-
- vui->vrings[q].errfd = fds[0];
- }
- else
- vui->vrings[q].errfd = -1;
- break;
-
- case VHOST_USER_SET_VRING_BASE:
- vu_log_debug (vui,
- "if %d msg VHOST_USER_SET_VRING_BASE idx %d num 0x%x",
- vui->hw_if_index, msg.state.index, msg.state.num);
- if (msg.state.index >= vui->num_qid)
- {
- vu_log_debug (vui, "invalid vring index VHOST_USER_SET_VRING_ADDR:"
- " %u >= %u", msg.state.index, vui->num_qid);
- goto close_socket;
- }
- vlib_worker_thread_barrier_sync (vm);
- vui->vrings[msg.state.index].last_avail_idx = msg.state.num;
- if (vhost_user_is_packed_ring_supported (vui))
- {
- /*
- * 0 1 2 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * | last avail idx | | last used idx | |
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ^ ^
- * | |
- * avail wrap counter used wrap counter
- */
- /* last avail idx at bit 0-14. */
- vui->vrings[msg.state.index].last_avail_idx =
- msg.state.num & 0x7fff;
- /* avail wrap counter at bit 15 */
- vui->vrings[msg.state.index].avail_wrap_counter =
- ! !(msg.state.num & (1 << 15));
-
- /*
- * Although last_used_idx is passed in the upper 16 bits in qemu
- * implementation, in practice, last_avail_idx and last_used_idx are
- * usually the same. As a result, DPDK does not bother to pass us
- * last_used_idx. The spec is not clear on thex coding. I figured it
- * out by reading the qemu code. So let's just read last_avail_idx
- * and set last_used_idx equals to last_avail_idx.
- */
- vui->vrings[msg.state.index].last_used_idx =
- vui->vrings[msg.state.index].last_avail_idx;
- vui->vrings[msg.state.index].last_kick =
- vui->vrings[msg.state.index].last_used_idx;
- vui->vrings[msg.state.index].used_wrap_counter =
- vui->vrings[msg.state.index].avail_wrap_counter;
-
- if (vui->vrings[msg.state.index].avail_wrap_counter == 1)
- vui->vrings[msg.state.index].avail_wrap_counter =
- VRING_DESC_F_AVAIL;
- }
- vlib_worker_thread_barrier_release (vm);
- break;
-
- case VHOST_USER_GET_VRING_BASE:
- if (msg.state.index >= vui->num_qid)
- {
- vu_log_debug (vui, "invalid vring index VHOST_USER_GET_VRING_BASE:"
- " %u >= %u", msg.state.index, vui->num_qid);
- goto close_socket;
- }
-
- /* protection is needed to prevent rx/tx from changing last_avail_idx */
- vlib_worker_thread_barrier_sync (vm);
- /*
- * Copy last_avail_idx from the vring before closing it because
- * closing the vring also initializes the vring last_avail_idx
- */
- msg.state.num = vui->vrings[msg.state.index].last_avail_idx;
- if (vhost_user_is_packed_ring_supported (vui))
- {
- msg.state.num =
- (vui->vrings[msg.state.index].last_avail_idx & 0x7fff) |
- (! !vui->vrings[msg.state.index].avail_wrap_counter << 15);
- msg.state.num |=
- ((vui->vrings[msg.state.index].last_used_idx & 0x7fff) |
- (! !vui->vrings[msg.state.index].used_wrap_counter << 15)) << 16;
- }
- msg.flags |= 4;
- msg.size = sizeof (msg.state);
-
- /*
- * Spec says: Client must [...] stop ring upon receiving
- * VHOST_USER_GET_VRING_BASE
- */
- vhost_user_vring_close (vui, msg.state.index);
- vlib_worker_thread_barrier_release (vm);
- vu_log_debug (vui,
- "if %d msg VHOST_USER_GET_VRING_BASE idx %d num 0x%x",
- vui->hw_if_index, msg.state.index, msg.state.num);
- n =
- send (uf->file_descriptor, &msg, VHOST_USER_MSG_HDR_SZ + msg.size, 0);
- if (n != (msg.size + VHOST_USER_MSG_HDR_SZ))
- {
- vu_log_debug (vui, "could not send message response");
- goto close_socket;
- }
- vhost_user_update_iface_state (vui);
- break;
-
- case VHOST_USER_NONE:
- vu_log_debug (vui, "if %d msg VHOST_USER_NONE", vui->hw_if_index);
- break;
-
- case VHOST_USER_SET_LOG_BASE:
- vu_log_debug (vui, "if %d msg VHOST_USER_SET_LOG_BASE",
- vui->hw_if_index);
-
- if (msg.size != sizeof (msg.log))
- {
- vu_log_debug (vui, "invalid msg size for VHOST_USER_SET_LOG_BASE:"
- " %d instead of %d", msg.size, sizeof (msg.log));
- goto close_socket;
- }
-
- if (!(vui->protocol_features & (1 << VHOST_USER_PROTOCOL_F_LOG_SHMFD)))
- {
- vu_log_debug (vui, "VHOST_USER_PROTOCOL_F_LOG_SHMFD not set but "
- "VHOST_USER_SET_LOG_BASE received");
- goto close_socket;
- }
-
- fd = fds[0];
- /* align size to page */
- long page_sz = get_huge_page_size (fd);
- ssize_t map_sz =
- (msg.log.size + msg.log.offset + page_sz - 1) & ~(page_sz - 1);
-
- void *log_base_addr = mmap (0, map_sz, PROT_READ | PROT_WRITE,
- MAP_SHARED, fd, 0);
-
- vu_log_debug (vui, "map log region addr 0 len 0x%lx off 0x%lx fd %d "
- "mapped 0x%lx", map_sz, msg.log.offset, fd,
- log_base_addr);
-
- if (log_base_addr == MAP_FAILED)
- {
- vu_log_err (vui, "failed to map memory. errno is %d", errno);
- goto close_socket;
- }
-
- vlib_worker_thread_barrier_sync (vm);
- vui->log_base_addr = log_base_addr;
- vui->log_base_addr += msg.log.offset;
- vui->log_size = msg.log.size;
- vlib_worker_thread_barrier_release (vm);
-
- msg.flags |= 4;
- msg.size = sizeof (msg.u64);
- n =
- send (uf->file_descriptor, &msg, VHOST_USER_MSG_HDR_SZ + msg.size, 0);
- if (n != (msg.size + VHOST_USER_MSG_HDR_SZ))
- {
- vu_log_debug (vui, "could not send message response");
- goto close_socket;
- }
- break;
-
- case VHOST_USER_SET_LOG_FD:
- vu_log_debug (vui, "if %d msg VHOST_USER_SET_LOG_FD", vui->hw_if_index);
- break;
-
- case VHOST_USER_GET_PROTOCOL_FEATURES:
- msg.flags |= 4;
- msg.u64 = (1 << VHOST_USER_PROTOCOL_F_LOG_SHMFD) |
- (1 << VHOST_USER_PROTOCOL_F_MQ);
- msg.size = sizeof (msg.u64);
- vu_log_debug (vui, "if %d msg VHOST_USER_GET_PROTOCOL_FEATURES - "
- "reply 0x%016llx", vui->hw_if_index, msg.u64);
- n =
- send (uf->file_descriptor, &msg, VHOST_USER_MSG_HDR_SZ + msg.size, 0);
- if (n != (msg.size + VHOST_USER_MSG_HDR_SZ))
- {
- vu_log_debug (vui, "could not send message response");
- goto close_socket;
- }
- break;
-
- case VHOST_USER_SET_PROTOCOL_FEATURES:
- vu_log_debug (vui, "if %d msg VHOST_USER_SET_PROTOCOL_FEATURES "
- "features 0x%016llx", vui->hw_if_index, msg.u64);
- vui->protocol_features = msg.u64;
- break;
-
- case VHOST_USER_GET_QUEUE_NUM:
- msg.flags |= 4;
- msg.u64 = VHOST_VRING_MAX_MQ_PAIR_SZ;
- msg.size = sizeof (msg.u64);
- vu_log_debug (vui, "if %d msg VHOST_USER_GET_QUEUE_NUM - reply %d",
- vui->hw_if_index, msg.u64);
- n =
- send (uf->file_descriptor, &msg, VHOST_USER_MSG_HDR_SZ + msg.size, 0);
- if (n != (msg.size + VHOST_USER_MSG_HDR_SZ))
- {
- vu_log_debug (vui, "could not send message response");
- goto close_socket;
- }
- break;
-
- case VHOST_USER_SET_VRING_ENABLE:
- vu_log_debug (vui, "if %d VHOST_USER_SET_VRING_ENABLE: %s queue %d",
- vui->hw_if_index, msg.state.num ? "enable" : "disable",
- msg.state.index);
- if (msg.state.index >= vui->num_qid)
- {
- vu_log_debug (vui, "invalid vring idx VHOST_USER_SET_VRING_ENABLE:"
- " %u >= %u", msg.state.index, vui->num_qid);
- goto close_socket;
- }
-
- vui->vrings[msg.state.index].enabled = msg.state.num;
- vhost_user_thread_placement (vui, msg.state.index);
- vhost_user_update_iface_state (vui);
- break;
-
- default:
- vu_log_debug (vui, "unknown vhost-user message %d received. "
- "closing socket", msg.request);
- goto close_socket;
- }
-
- return 0;
-
-close_socket:
- vlib_worker_thread_barrier_sync (vm);
- vhost_user_if_disconnect (vui);
- vlib_worker_thread_barrier_release (vm);
- vhost_user_update_iface_state (vui);
- return 0;
-}
-
-static clib_error_t *
-vhost_user_socket_error (clib_file_t * uf)
-{
- vlib_main_t *vm = vlib_get_main ();
- vhost_user_main_t *vum = &vhost_user_main;
- vhost_user_intf_t *vui =
- pool_elt_at_index (vum->vhost_user_interfaces, uf->private_data);
-
- vu_log_debug (vui, "socket error on if %d", vui->sw_if_index);
- vlib_worker_thread_barrier_sync (vm);
- vhost_user_if_disconnect (vui);
- vlib_worker_thread_barrier_release (vm);
- return 0;
-}
-
-static clib_error_t *
-vhost_user_socksvr_accept_ready (clib_file_t * uf)
-{
- int client_fd, client_len;
- struct sockaddr_un client;
- clib_file_t template = { 0 };
- vhost_user_main_t *vum = &vhost_user_main;
- vhost_user_intf_t *vui;
-
- vui = pool_elt_at_index (vum->vhost_user_interfaces, uf->private_data);
-
- client_len = sizeof (client);
- client_fd = accept (uf->file_descriptor,
- (struct sockaddr *) &client,
- (socklen_t *) & client_len);
-
- if (client_fd < 0)
- return clib_error_return_unix (0, "accept");
-
- if (vui->clib_file_index != ~0)
- {
- vu_log_debug (vui, "Close client socket for vhost interface %d, fd %d",
- vui->sw_if_index, UNIX_GET_FD (vui->clib_file_index));
- clib_file_del (&file_main, file_main.file_pool + vui->clib_file_index);
- }
-
- vu_log_debug (vui, "New client socket for vhost interface %d, fd %d",
- vui->sw_if_index, client_fd);
- template.read_function = vhost_user_socket_read;
- template.error_function = vhost_user_socket_error;
- template.file_descriptor = client_fd;
- template.private_data = vui - vhost_user_main.vhost_user_interfaces;
- template.description = format (0, "vhost interface %d", vui->sw_if_index);
- vui->clib_file_index = clib_file_add (&file_main, &template);
- vui->num_qid = 2;
- return 0;
-}
-
-static clib_error_t *
-vhost_user_init (vlib_main_t * vm)
-{
- vhost_user_main_t *vum = &vhost_user_main;
- vlib_thread_main_t *tm = vlib_get_thread_main ();
-
- vum->log_default = vlib_log_register_class ("vhost-user", 0);
-
- vum->coalesce_frames = 32;
- vum->coalesce_time = 1e-3;
-
- vec_validate (vum->cpus, tm->n_vlib_mains - 1);
-
- vhost_cpu_t *cpu;
- vec_foreach (cpu, vum->cpus)
- {
- /* This is actually not necessary as validate already zeroes it
- * Just keeping the loop here for later because I am lazy. */
- cpu->rx_buffers_len = 0;
- }
-
- vum->random = random_default_seed ();
-
- mhash_init_c_string (&vum->if_index_by_sock_name, sizeof (uword));
-
- return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_INIT_FUNCTION (vhost_user_init) =
-{
- .runs_after = VLIB_INITS("ip4_init"),
-};
-/* *INDENT-ON* */
-
-static uword
-vhost_user_send_interrupt_process (vlib_main_t * vm,
- vlib_node_runtime_t * rt, vlib_frame_t * f)
-{
- vhost_user_intf_t *vui;
- f64 timeout = 3153600000.0 /* 100 years */ ;
- uword event_type, *event_data = 0;
- vhost_user_main_t *vum = &vhost_user_main;
- u16 qid;
- f64 now, poll_time_remaining;
- f64 next_timeout;
- u8 stop_timer = 0;
-
- while (1)
- {
- poll_time_remaining =
- vlib_process_wait_for_event_or_clock (vm, timeout);
- event_type = vlib_process_get_events (vm, &event_data);
- vec_reset_length (event_data);
-
- /*
- * Use the remaining timeout if it is less than coalesce time to avoid
- * resetting the existing timer in the middle of expiration
- */
- timeout = poll_time_remaining;
- if (vlib_process_suspend_time_is_zero (timeout) ||
- (timeout > vum->coalesce_time))
- timeout = vum->coalesce_time;
-
- now = vlib_time_now (vm);
- switch (event_type)
- {
- case VHOST_USER_EVENT_STOP_TIMER:
- stop_timer = 1;
- break;
-
- case VHOST_USER_EVENT_START_TIMER:
- stop_timer = 0;
- timeout = 1e-3;
- if (!vlib_process_suspend_time_is_zero (poll_time_remaining))
- break;
- /* fall through */
-
- case ~0:
- /* *INDENT-OFF* */
- pool_foreach (vui, vum->vhost_user_interfaces) {
- next_timeout = timeout;
- FOR_ALL_VHOST_RX_TXQ (qid, vui)
- {
- vhost_user_vring_t *vq = &vui->vrings[qid];
-
- if (vq->started == 0)
- continue;
- if (vq->n_since_last_int)
- {
- if (now >= vq->int_deadline)
- vhost_user_send_call (vm, vui, vq);
- else
- next_timeout = vq->int_deadline - now;
- }
-
- if ((next_timeout < timeout) && (next_timeout > 0.0))
- timeout = next_timeout;
- }
- }
- /* *INDENT-ON* */
- break;
-
- default:
- clib_warning ("BUG: unhandled event type %d", event_type);
- break;
- }
- /* No less than 1 millisecond */
- if (timeout < 1e-3)
- timeout = 1e-3;
- if (stop_timer)
- timeout = 3153600000.0;
- }
- return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (vhost_user_send_interrupt_node) = {
- .function = vhost_user_send_interrupt_process,
- .type = VLIB_NODE_TYPE_PROCESS,
- .name = "vhost-user-send-interrupt-process",
-};
-/* *INDENT-ON* */
-
-static uword
-vhost_user_process (vlib_main_t * vm,
- vlib_node_runtime_t * rt, vlib_frame_t * f)
-{
- vhost_user_main_t *vum = &vhost_user_main;
- vhost_user_intf_t *vui;
- struct sockaddr_un sun;
- int sockfd;
- clib_file_t template = { 0 };
- f64 timeout = 3153600000.0 /* 100 years */ ;
- uword *event_data = 0;
-
- sockfd = -1;
- sun.sun_family = AF_UNIX;
- template.read_function = vhost_user_socket_read;
- template.error_function = vhost_user_socket_error;
-
- while (1)
- {
- vlib_process_wait_for_event_or_clock (vm, timeout);
- vlib_process_get_events (vm, &event_data);
- vec_reset_length (event_data);
-
- timeout = 3.0;
-
- /* *INDENT-OFF* */
- pool_foreach (vui, vum->vhost_user_interfaces) {
-
- if (vui->unix_server_index == ~0) { //Nothing to do for server sockets
- if (vui->clib_file_index == ~0)
- {
- if ((sockfd < 0) &&
- ((sockfd = socket (AF_UNIX, SOCK_STREAM, 0)) < 0))
- {
- /*
- * 1st time error or new error for this interface,
- * spit out the message and record the error
- */
- if (!vui->sock_errno || (vui->sock_errno != errno))
- {
- clib_unix_warning
- ("Error: Could not open unix socket for %s",
- vui->sock_filename);
- vui->sock_errno = errno;
- }
- continue;
- }
-
- /* try to connect */
- strncpy (sun.sun_path, (char *) vui->sock_filename,
- sizeof (sun.sun_path) - 1);
- sun.sun_path[sizeof (sun.sun_path) - 1] = 0;
-
- /* Avoid hanging VPP if the other end does not accept */
- if (fcntl(sockfd, F_SETFL, O_NONBLOCK) < 0)
- clib_unix_warning ("fcntl");
-
- if (connect (sockfd, (struct sockaddr *) &sun,
- sizeof (struct sockaddr_un)) == 0)
- {
- /* Set the socket to blocking as it was before */
- if (fcntl(sockfd, F_SETFL, 0) < 0)
- clib_unix_warning ("fcntl2");
-
- vui->sock_errno = 0;
- template.file_descriptor = sockfd;
- template.private_data =
- vui - vhost_user_main.vhost_user_interfaces;
- template.description = format (0, "vhost user process");
- vui->clib_file_index = clib_file_add (&file_main, &template);
- vui->num_qid = 2;
-
- /* This sockfd is considered consumed */
- sockfd = -1;
- }
- else
- {
- vui->sock_errno = errno;
- }
- }
- else
- {
- /* check if socket is alive */
- int error = 0;
- socklen_t len = sizeof (error);
- int fd = UNIX_GET_FD(vui->clib_file_index);
- int retval =
- getsockopt (fd, SOL_SOCKET, SO_ERROR, &error, &len);
-
- if (retval)
- {
- vu_log_debug (vui, "getsockopt returned %d", retval);
- vhost_user_if_disconnect (vui);
- }
- }
- }
- }
- /* *INDENT-ON* */
- }
- return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (vhost_user_process_node,static) = {
- .function = vhost_user_process,
- .type = VLIB_NODE_TYPE_PROCESS,
- .name = "vhost-user-process",
-};
-/* *INDENT-ON* */
-
-/**
- * Disables and reset interface structure.
- * It can then be either init again, or removed from used interfaces.
- */
-static void
-vhost_user_term_if (vhost_user_intf_t * vui)
-{
- int q;
- vhost_user_main_t *vum = &vhost_user_main;
-
- // disconnect interface sockets
- vhost_user_if_disconnect (vui);
- vhost_user_update_gso_interface_count (vui, 0 /* delete */ );
- vhost_user_update_iface_state (vui);
-
- for (q = 0; q < vec_len (vui->vrings); q++)
- clib_spinlock_free (&vui->vrings[q].vring_lock);
-
- if (vui->unix_server_index != ~0)
- {
- //Close server socket
- clib_file_t *uf = pool_elt_at_index (file_main.file_pool,
- vui->unix_server_index);
- clib_file_del (&file_main, uf);
- vui->unix_server_index = ~0;
- unlink (vui->sock_filename);
- }
-
- mhash_unset (&vum->if_index_by_sock_name, vui->sock_filename,
- &vui->if_index);
-}
-
-int
-vhost_user_delete_if (vnet_main_t * vnm, vlib_main_t * vm, u32 sw_if_index)
-{
- vhost_user_main_t *vum = &vhost_user_main;
- vhost_user_intf_t *vui;
- int rv = 0;
- vnet_hw_interface_t *hwif;
- u16 qid;
-
- if (!
- (hwif =
- vnet_get_sup_hw_interface_api_visible_or_null (vnm, sw_if_index))
- || hwif->dev_class_index != vhost_user_device_class.index)
- return VNET_API_ERROR_INVALID_SW_IF_INDEX;
-
- vui = pool_elt_at_index (vum->vhost_user_interfaces, hwif->dev_instance);
-
- vu_log_debug (vui, "Deleting vhost-user interface %s (instance %d)",
- hwif->name, hwif->dev_instance);
-
- FOR_ALL_VHOST_TXQ (qid, vui)
- {
- vhost_user_vring_t *txvq = &vui->vrings[qid];
-
- if ((txvq->mode == VNET_HW_IF_RX_MODE_POLLING) &&
- (txvq->thread_index != ~0))
- {
- vhost_cpu_t *cpu = vec_elt_at_index (vum->cpus, txvq->thread_index);
- ASSERT (cpu->polling_q_count != 0);
- cpu->polling_q_count--;
- }
-
- if ((vum->ifq_count > 0) &&
- ((txvq->mode == VNET_HW_IF_RX_MODE_INTERRUPT) ||
- (txvq->mode == VNET_HW_IF_RX_MODE_ADAPTIVE)))
- {
- vum->ifq_count--;
- // Stop the timer if there is no more interrupt interface/queue
- if (vum->ifq_count == 0)
- {
- vlib_process_signal_event (vm,
- vhost_user_send_interrupt_node.index,
- VHOST_USER_EVENT_STOP_TIMER, 0);
- break;
- }
- }
- }
-
- // Disable and reset interface
- vhost_user_term_if (vui);
-
- // Reset renumbered iface
- if (hwif->dev_instance <
- vec_len (vum->show_dev_instance_by_real_dev_instance))
- vum->show_dev_instance_by_real_dev_instance[hwif->dev_instance] = ~0;
-
- // Delete ethernet interface
- ethernet_delete_interface (vnm, vui->hw_if_index);
-
- // free vrings
- vec_free (vui->vrings);
-
- // Back to pool
- pool_put (vum->vhost_user_interfaces, vui);
-
- return rv;
-}
-
-static clib_error_t *
-vhost_user_exit (vlib_main_t * vm)
-{
- vnet_main_t *vnm = vnet_get_main ();
- vhost_user_main_t *vum = &vhost_user_main;
- vhost_user_intf_t *vui;
-
- vlib_worker_thread_barrier_sync (vlib_get_main ());
- /* *INDENT-OFF* */
- pool_foreach (vui, vum->vhost_user_interfaces) {
- vhost_user_delete_if (vnm, vm, vui->sw_if_index);
- }
- /* *INDENT-ON* */
- vlib_worker_thread_barrier_release (vlib_get_main ());
- return 0;
-}
-
-VLIB_MAIN_LOOP_EXIT_FUNCTION (vhost_user_exit);
-
-/**
- * Open server unix socket on specified sock_filename.
- */
-static int
-vhost_user_init_server_sock (const char *sock_filename, int *sock_fd)
-{
- int rv = 0;
- struct sockaddr_un un = { };
- int fd;
- /* create listening socket */
- if ((fd = socket (AF_UNIX, SOCK_STREAM, 0)) < 0)
- return VNET_API_ERROR_SYSCALL_ERROR_1;
-
- un.sun_family = AF_UNIX;
- strncpy ((char *) un.sun_path, (char *) sock_filename,
- sizeof (un.sun_path) - 1);
-
- /* remove if exists */
- unlink ((char *) sock_filename);
-
- if (bind (fd, (struct sockaddr *) &un, sizeof (un)) == -1)
- {
- rv = VNET_API_ERROR_SYSCALL_ERROR_2;
- goto error;
- }
-
- if (listen (fd, 1) == -1)
- {
- rv = VNET_API_ERROR_SYSCALL_ERROR_3;
- goto error;
- }
-
- *sock_fd = fd;
- return 0;
-
-error:
- close (fd);
- return rv;
-}
-
-/**
- * Create ethernet interface for vhost user interface.
- */
-static void
-vhost_user_create_ethernet (vnet_main_t *vnm, vlib_main_t *vm,
- vhost_user_intf_t *vui,
- vhost_user_create_if_args_t *args)
-{
- vhost_user_main_t *vum = &vhost_user_main;
- vnet_eth_interface_registration_t eir = {};
- u8 hwaddr[6];
-
- /* create hw and sw interface */
- if (args->use_custom_mac)
- {
- clib_memcpy (hwaddr, args->hwaddr, 6);
- }
- else
- {
- random_u32 (&vum->random);
- clib_memcpy (hwaddr + 2, &vum->random, sizeof (vum->random));
- hwaddr[0] = 2;
- hwaddr[1] = 0xfe;
- }
-
- eir.dev_class_index = vhost_user_device_class.index;
- eir.dev_instance = vui - vum->vhost_user_interfaces /* device instance */,
- eir.address = hwaddr;
- vui->hw_if_index = vnet_eth_register_interface (vnm, &eir);
-}
-
-/*
- * Initialize vui with specified attributes
- */
-static void
-vhost_user_vui_init (vnet_main_t * vnm, vhost_user_intf_t * vui,
- int server_sock_fd, vhost_user_create_if_args_t * args,
- u32 * sw_if_index)
-{
- vnet_sw_interface_t *sw;
- int q;
- vhost_user_main_t *vum = &vhost_user_main;
-
- sw = vnet_get_hw_sw_interface (vnm, vui->hw_if_index);
- if (server_sock_fd != -1)
- {
- clib_file_t template = { 0 };
- template.read_function = vhost_user_socksvr_accept_ready;
- template.file_descriptor = server_sock_fd;
- template.private_data = vui - vum->vhost_user_interfaces; //hw index
- template.description = format (0, "vhost user %d", sw);
- vui->unix_server_index = clib_file_add (&file_main, &template);
- }
- else
- {
- vui->unix_server_index = ~0;
- }
-
- vui->sw_if_index = sw->sw_if_index;
- strncpy (vui->sock_filename, args->sock_filename,
- ARRAY_LEN (vui->sock_filename) - 1);
- vui->sock_errno = 0;
- vui->is_ready = 0;
- vui->feature_mask = args->feature_mask;
- vui->clib_file_index = ~0;
- vui->log_base_addr = 0;
- vui->if_index = vui - vum->vhost_user_interfaces;
- vui->enable_gso = args->enable_gso;
- vui->enable_event_idx = args->enable_event_idx;
- vui->enable_packed = args->enable_packed;
- /*
- * enable_gso takes precedence over configurable feature mask if there
- * is a clash.
- * if feature mask disables gso, but enable_gso is configured,
- * then gso is enable
- * if feature mask enables gso, but enable_gso is not configured,
- * then gso is enable
- *
- * if gso is enable via feature mask, it must enable both host and guest
- * gso feature mask, we don't support one sided GSO or partial GSO.
- */
- if ((vui->enable_gso == 0) &&
- ((args->feature_mask & FEATURE_VIRTIO_NET_F_HOST_GUEST_TSO_FEATURE_BITS)
- == (FEATURE_VIRTIO_NET_F_HOST_GUEST_TSO_FEATURE_BITS)))
- vui->enable_gso = 1;
- vhost_user_update_gso_interface_count (vui, 1 /* add */ );
- mhash_set_mem (&vum->if_index_by_sock_name, vui->sock_filename,
- &vui->if_index, 0);
-
- vec_validate_aligned (vui->vrings, (VHOST_VRING_INIT_MQ_PAIR_SZ << 1) - 1,
- CLIB_CACHE_LINE_BYTES);
- vui->num_qid = 2;
- for (q = 0; q < vec_len (vui->vrings); q++)
- vhost_user_vring_init (vui, q);
-
- vnet_hw_if_set_caps (vnm, vui->hw_if_index, VNET_HW_IF_CAP_INT_MODE);
- vnet_hw_interface_set_flags (vnm, vui->hw_if_index, 0);
-
- if (sw_if_index)
- *sw_if_index = vui->sw_if_index;
-}
-
-int
-vhost_user_create_if (vnet_main_t * vnm, vlib_main_t * vm,
- vhost_user_create_if_args_t * args)
-{
- vhost_user_intf_t *vui = NULL;
- u32 sw_if_idx = ~0;
- int rv = 0;
- int server_sock_fd = -1;
- vhost_user_main_t *vum = &vhost_user_main;
- uword *if_index;
-
- if (args->sock_filename == NULL || !(strlen (args->sock_filename) > 0))
- {
- return VNET_API_ERROR_INVALID_ARGUMENT;
- }
-
- if_index = mhash_get (&vum->if_index_by_sock_name,
- (void *) args->sock_filename);
- if (if_index)
- {
- vui = &vum->vhost_user_interfaces[*if_index];
- args->sw_if_index = vui->sw_if_index;
- return VNET_API_ERROR_IF_ALREADY_EXISTS;
- }
-
- if (args->is_server)
- {
- if ((rv =
- vhost_user_init_server_sock (args->sock_filename,
- &server_sock_fd)) != 0)
- {
- return rv;
- }
- }
-
- /* Protect the uninitialized vui from being dispatched by rx/tx */
- vlib_worker_thread_barrier_sync (vm);
- pool_get (vhost_user_main.vhost_user_interfaces, vui);
- vhost_user_create_ethernet (vnm, vm, vui, args);
- vlib_worker_thread_barrier_release (vm);
-
- vhost_user_vui_init (vnm, vui, server_sock_fd, args, &sw_if_idx);
- vnet_sw_interface_set_mtu (vnm, vui->sw_if_index, 9000);
- vhost_user_rx_thread_placement (vui, 1);
-
- if (args->renumber)
- vnet_interface_name_renumber (sw_if_idx, args->custom_dev_instance);
-
- args->sw_if_index = sw_if_idx;
-
- // Process node must connect
- vlib_process_signal_event (vm, vhost_user_process_node.index, 0, 0);
-
- return rv;
-}
-
-int
-vhost_user_modify_if (vnet_main_t * vnm, vlib_main_t * vm,
- vhost_user_create_if_args_t * args)
-{
- vhost_user_main_t *vum = &vhost_user_main;
- vhost_user_intf_t *vui = NULL;
- u32 sw_if_idx = ~0;
- int server_sock_fd = -1;
- int rv = 0;
- vnet_hw_interface_t *hwif;
- uword *if_index;
-
- if (!(hwif = vnet_get_sup_hw_interface_api_visible_or_null (vnm,
- args->sw_if_index))
- || hwif->dev_class_index != vhost_user_device_class.index)
- return VNET_API_ERROR_INVALID_SW_IF_INDEX;
-
- if (args->sock_filename == NULL || !(strlen (args->sock_filename) > 0))
- return VNET_API_ERROR_INVALID_ARGUMENT;
-
- vui = vec_elt_at_index (vum->vhost_user_interfaces, hwif->dev_instance);
-
- /*
- * Disallow changing the interface to have the same path name
- * as other interface
- */
- if_index = mhash_get (&vum->if_index_by_sock_name,
- (void *) args->sock_filename);
- if (if_index && (*if_index != vui->if_index))
- return VNET_API_ERROR_IF_ALREADY_EXISTS;
-
- // First try to open server socket
- if (args->is_server)
- if ((rv = vhost_user_init_server_sock (args->sock_filename,
- &server_sock_fd)) != 0)
- return rv;
-
- vhost_user_term_if (vui);
- vhost_user_vui_init (vnm, vui, server_sock_fd, args, &sw_if_idx);
-
- if (args->renumber)
- vnet_interface_name_renumber (sw_if_idx, args->custom_dev_instance);
-
- // Process node must connect
- vlib_process_signal_event (vm, vhost_user_process_node.index, 0, 0);
-
- return rv;
-}
-
-clib_error_t *
-vhost_user_connect_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- vnet_main_t *vnm = vnet_get_main ();
- unformat_input_t _line_input, *line_input = &_line_input;
- clib_error_t *error = NULL;
- vhost_user_create_if_args_t args = { 0 };
- int rv;
-
- /* Get a line of input. */
- if (!unformat_user (input, unformat_line_input, line_input))
- return 0;
-
- args.feature_mask = (u64) ~ (0ULL);
- args.custom_dev_instance = ~0;
- /* GSO feature is disable by default */
- args.feature_mask &= ~FEATURE_VIRTIO_NET_F_HOST_GUEST_TSO_FEATURE_BITS;
- /* packed-ring feature is disable by default */
- args.feature_mask &= ~VIRTIO_FEATURE (VIRTIO_F_RING_PACKED);
- /* event_idx feature is disable by default */
- args.feature_mask &= ~VIRTIO_FEATURE (VIRTIO_RING_F_EVENT_IDX);
-
- while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (line_input, "socket %s", &args.sock_filename))
- ;
- else if (unformat (line_input, "server"))
- args.is_server = 1;
- else if (unformat (line_input, "gso"))
- args.enable_gso = 1;
- else if (unformat (line_input, "packed"))
- args.enable_packed = 1;
- else if (unformat (line_input, "event-idx"))
- args.enable_event_idx = 1;
- else if (unformat (line_input, "feature-mask 0x%llx",
- &args.feature_mask))
- ;
- else if (unformat (line_input, "hwaddr %U", unformat_ethernet_address,
- args.hwaddr))
- args.use_custom_mac = 1;
- else if (unformat (line_input, "renumber %d",
- &args.custom_dev_instance))
- args.renumber = 1;
- else
- {
- error = clib_error_return (0, "unknown input `%U'",
- format_unformat_error, line_input);
- goto done;
- }
- }
-
- if ((rv = vhost_user_create_if (vnm, vm, &args)))
- {
- error = clib_error_return (0, "vhost_user_create_if returned %d", rv);
- goto done;
- }
-
- vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnm,
- args.sw_if_index);
-
-done:
- vec_free (args.sock_filename);
- unformat_free (line_input);
-
- return error;
-}
-
-clib_error_t *
-vhost_user_delete_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- unformat_input_t _line_input, *line_input = &_line_input;
- u32 sw_if_index = ~0;
- vnet_main_t *vnm = vnet_get_main ();
- clib_error_t *error = NULL;
-
- /* Get a line of input. */
- if (!unformat_user (input, unformat_line_input, line_input))
- return 0;
-
- while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (line_input, "sw_if_index %d", &sw_if_index))
- ;
- else if (unformat
- (line_input, "%U", unformat_vnet_sw_interface, vnm,
- &sw_if_index))
- {
- vnet_hw_interface_t *hwif =
- vnet_get_sup_hw_interface_api_visible_or_null (vnm, sw_if_index);
- if (hwif == NULL ||
- vhost_user_device_class.index != hwif->dev_class_index)
- {
- error = clib_error_return (0, "Not a vhost interface");
- goto done;
- }
- }
- else
- {
- error = clib_error_return (0, "unknown input `%U'",
- format_unformat_error, line_input);
- goto done;
- }
- }
-
- vhost_user_delete_if (vnm, vm, sw_if_index);
-
-done:
- unformat_free (line_input);
-
- return error;
-}
-
-int
-vhost_user_dump_ifs (vnet_main_t * vnm, vlib_main_t * vm,
- vhost_user_intf_details_t ** out_vuids)
-{
- int rv = 0;
- vhost_user_main_t *vum = &vhost_user_main;
- vhost_user_intf_t *vui;
- vhost_user_intf_details_t *r_vuids = NULL;
- vhost_user_intf_details_t *vuid = NULL;
- u32 *hw_if_indices = 0;
- vnet_hw_interface_t *hi;
- int i;
-
- if (!out_vuids)
- return -1;
-
- pool_foreach (vui, vum->vhost_user_interfaces)
- vec_add1 (hw_if_indices, vui->hw_if_index);
-
- for (i = 0; i < vec_len (hw_if_indices); i++)
- {
- hi = vnet_get_hw_interface (vnm, hw_if_indices[i]);
- vui = pool_elt_at_index (vum->vhost_user_interfaces, hi->dev_instance);
-
- vec_add2 (r_vuids, vuid, 1);
- vuid->sw_if_index = vui->sw_if_index;
- vuid->virtio_net_hdr_sz = vui->virtio_net_hdr_sz;
- vuid->features = vui->features;
- vuid->num_regions = vui->nregions;
- vuid->is_server = vui->unix_server_index != ~0;
- vuid->sock_errno = vui->sock_errno;
- snprintf ((char *) vuid->sock_filename, sizeof (vuid->sock_filename),
- "%s", vui->sock_filename);
- memcpy_s (vuid->if_name, sizeof (vuid->if_name), hi->name,
- clib_min (vec_len (hi->name), sizeof (vuid->if_name) - 1));
- vuid->if_name[sizeof (vuid->if_name) - 1] = 0;
- }
-
- vec_free (hw_if_indices);
-
- *out_vuids = r_vuids;
-
- return rv;
-}
-
-static u8 *
-format_vhost_user_desc (u8 * s, va_list * args)
-{
- char *fmt = va_arg (*args, char *);
- vhost_user_intf_t *vui = va_arg (*args, vhost_user_intf_t *);
- vnet_virtio_vring_desc_t *desc_table =
- va_arg (*args, vnet_virtio_vring_desc_t *);
- int idx = va_arg (*args, int);
- u32 *mem_hint = va_arg (*args, u32 *);
-
- s = format (s, fmt, idx, desc_table[idx].addr, desc_table[idx].len,
- desc_table[idx].flags, desc_table[idx].next,
- pointer_to_uword (map_guest_mem (vui, desc_table[idx].addr,
- mem_hint)));
- return s;
-}
-
-static void
-vhost_user_show_fds (vlib_main_t * vm, vhost_user_vring_t * vq)
-{
- int kickfd = UNIX_GET_FD (vq->kickfd_idx);
- int callfd = UNIX_GET_FD (vq->callfd_idx);
-
- vlib_cli_output (vm, " kickfd %d callfd %d errfd %d\n", kickfd, callfd,
- vq->errfd);
-}
-
-static void
-vhost_user_show_desc (vlib_main_t * vm, vhost_user_intf_t * vui, int q,
- int show_descr, int show_verbose)
-{
- int j;
- u32 mem_hint = 0;
- u32 idx;
- u32 n_entries;
- vnet_virtio_vring_desc_t *desc_table;
- vhost_user_vring_t *vq = &vui->vrings[q];
-
- if (vq->avail && vq->used)
- vlib_cli_output (vm,
- " avail.flags %x avail event idx %u avail.idx %d "
- "used.flags %x used event idx %u used.idx %d\n",
- vq->avail->flags, vhost_user_avail_event_idx (vq),
- vq->avail->idx, vq->used->flags,
- vhost_user_used_event_idx (vq), vq->used->idx);
-
- vhost_user_show_fds (vm, vq);
-
- if (show_descr)
- {
- vlib_cli_output (vm, "\n descriptor table:\n");
- vlib_cli_output (vm,
- " slot addr len flags next "
- "user_addr\n");
- vlib_cli_output (vm,
- " ===== ================== ===== ====== ===== "
- "==================\n");
- for (j = 0; j < vq->qsz_mask + 1; j++)
- {
- desc_table = vq->desc;
- vlib_cli_output (vm, "%U", format_vhost_user_desc,
- " %-5d 0x%016lx %-5d 0x%04x %-5d 0x%016lx\n", vui,
- desc_table, j, &mem_hint);
- if (show_verbose && (desc_table[j].flags & VRING_DESC_F_INDIRECT))
- {
- n_entries =
- desc_table[j].len / sizeof (vnet_virtio_vring_desc_t);
- desc_table = map_guest_mem (vui, desc_table[j].addr, &mem_hint);
- if (desc_table)
- {
- for (idx = 0; idx < clib_min (20, n_entries); idx++)
- {
- vlib_cli_output
- (vm, "%U", format_vhost_user_desc,
- "> %-4u 0x%016lx %-5u 0x%04x %-5u 0x%016lx\n", vui,
- desc_table, idx, &mem_hint);
- }
- if (n_entries >= 20)
- vlib_cli_output (vm, "Skip displaying entries 20...%u\n",
- n_entries);
- }
- }
- }
- }
-}
-
-static u8 *
-format_vhost_user_packed_desc (u8 * s, va_list * args)
-{
- char *fmt = va_arg (*args, char *);
- vhost_user_intf_t *vui = va_arg (*args, vhost_user_intf_t *);
- vnet_virtio_vring_packed_desc_t *desc_table =
- va_arg (*args, vnet_virtio_vring_packed_desc_t *);
- int idx = va_arg (*args, int);
- u32 *mem_hint = va_arg (*args, u32 *);
-
- s = format (s, fmt, idx, desc_table[idx].addr, desc_table[idx].len,
- desc_table[idx].flags, desc_table[idx].id,
- pointer_to_uword (map_guest_mem (vui, desc_table[idx].addr,
- mem_hint)));
- return s;
-}
-
-static u8 *
-format_vhost_user_event_idx_flags (u8 * s, va_list * args)
-{
- u32 flags = va_arg (*args, u32);
- typedef struct
- {
- u8 value;
- char *str;
- } event_idx_flags;
- static event_idx_flags event_idx_array[] = {
-#define _(s,v) { .str = #s, .value = v, },
- foreach_virtio_event_idx_flags
-#undef _
- };
- u32 num_entries = sizeof (event_idx_array) / sizeof (event_idx_flags);
-
- if (flags < num_entries)
- s = format (s, "%s", event_idx_array[flags].str);
- else
- s = format (s, "%u", flags);
- return s;
-}
-
-static void
-vhost_user_show_desc_packed (vlib_main_t * vm, vhost_user_intf_t * vui, int q,
- int show_descr, int show_verbose)
-{
- int j;
- u32 mem_hint = 0;
- u32 idx;
- u32 n_entries;
- vnet_virtio_vring_packed_desc_t *desc_table;
- vhost_user_vring_t *vq = &vui->vrings[q];
- u16 off_wrap, event_idx;
-
- off_wrap = vq->avail_event->off_wrap;
- event_idx = off_wrap & 0x7fff;
- vlib_cli_output (vm, " avail_event.flags %U avail_event.off_wrap %u "
- "avail event idx %u\n", format_vhost_user_event_idx_flags,
- (u32) vq->avail_event->flags, off_wrap, event_idx);
-
- off_wrap = vq->used_event->off_wrap;
- event_idx = off_wrap & 0x7fff;
- vlib_cli_output (vm, " used_event.flags %U used_event.off_wrap %u "
- "used event idx %u\n", format_vhost_user_event_idx_flags,
- (u32) vq->used_event->flags, off_wrap, event_idx);
-
- vlib_cli_output (vm, " avail wrap counter %u, used wrap counter %u\n",
- vq->avail_wrap_counter, vq->used_wrap_counter);
-
- vhost_user_show_fds (vm, vq);
-
- if (show_descr)
- {
- vlib_cli_output (vm, "\n descriptor table:\n");
- vlib_cli_output (vm,
- " slot addr len flags id "
- "user_addr\n");
- vlib_cli_output (vm,
- " ===== ================== ===== ====== ===== "
- "==================\n");
- for (j = 0; j < vq->qsz_mask + 1; j++)
- {
- desc_table = vq->packed_desc;
- vlib_cli_output (vm, "%U", format_vhost_user_packed_desc,
- " %-5u 0x%016lx %-5u 0x%04x %-5u 0x%016lx\n", vui,
- desc_table, j, &mem_hint);
- if (show_verbose && (desc_table[j].flags & VRING_DESC_F_INDIRECT))
- {
- n_entries = desc_table[j].len >> 4;
- desc_table = map_guest_mem (vui, desc_table[j].addr, &mem_hint);
- if (desc_table)
- {
- for (idx = 0; idx < clib_min (20, n_entries); idx++)
- {
- vlib_cli_output
- (vm, "%U", format_vhost_user_packed_desc,
- "> %-4u 0x%016lx %-5u 0x%04x %-5u 0x%016lx\n", vui,
- desc_table, idx, &mem_hint);
- }
- if (n_entries >= 20)
- vlib_cli_output (vm, "Skip displaying entries 20...%u\n",
- n_entries);
- }
- }
- }
- }
-}
-
-clib_error_t *
-show_vhost_user_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- clib_error_t *error = 0;
- vnet_main_t *vnm = vnet_get_main ();
- vhost_user_main_t *vum = &vhost_user_main;
- vhost_user_intf_t *vui;
- u32 hw_if_index, *hw_if_indices = 0;
- vnet_hw_interface_t *hi;
- u16 qid;
- int i, j, q;
- int show_descr = 0;
- int show_verbose = 0;
- struct feat_struct
- {
- u8 bit;
- char *str;
- };
- struct feat_struct *feat_entry;
-
- static struct feat_struct feat_array[] = {
-#define _(s,b) { .str = #s, .bit = b, },
- foreach_virtio_net_features
-#undef _
- {.str = NULL}
- };
-
-#define foreach_protocol_feature \
- _(VHOST_USER_PROTOCOL_F_MQ) \
- _(VHOST_USER_PROTOCOL_F_LOG_SHMFD)
-
- static struct feat_struct proto_feat_array[] = {
-#define _(s) { .str = #s, .bit = s},
- foreach_protocol_feature
-#undef _
- {.str = NULL}
- };
-
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat
- (input, "%U", unformat_vnet_hw_interface, vnm, &hw_if_index))
- {
- hi = vnet_get_hw_interface (vnm, hw_if_index);
- if (vhost_user_device_class.index != hi->dev_class_index)
- {
- error = clib_error_return (0, "unknown input `%U'",
- format_unformat_error, input);
- goto done;
- }
- vec_add1 (hw_if_indices, hw_if_index);
- }
- else if (unformat (input, "descriptors") || unformat (input, "desc"))
- show_descr = 1;
- else if (unformat (input, "verbose"))
- show_verbose = 1;
- else
- {
- error = clib_error_return (0, "unknown input `%U'",
- format_unformat_error, input);
- goto done;
- }
- }
- if (vec_len (hw_if_indices) == 0)
- {
- pool_foreach (vui, vum->vhost_user_interfaces)
- vec_add1 (hw_if_indices, vui->hw_if_index);
- }
- vlib_cli_output (vm, "Virtio vhost-user interfaces");
- vlib_cli_output (vm, "Global:\n coalesce frames %d time %e",
- vum->coalesce_frames, vum->coalesce_time);
- vlib_cli_output (vm, " Number of rx virtqueues in interrupt mode: %d",
- vum->ifq_count);
- vlib_cli_output (vm, " Number of GSO interfaces: %d", vum->gso_count);
- for (u32 tid = 0; tid <= vlib_num_workers (); tid++)
- {
- vhost_cpu_t *cpu = vec_elt_at_index (vum->cpus, tid);
- vlib_cli_output (vm, " Thread %u: Polling queue count %u", tid,
- cpu->polling_q_count);
- }
-
- for (i = 0; i < vec_len (hw_if_indices); i++)
- {
- hi = vnet_get_hw_interface (vnm, hw_if_indices[i]);
- vui = pool_elt_at_index (vum->vhost_user_interfaces, hi->dev_instance);
- vlib_cli_output (vm, "Interface: %U (ifindex %d)",
- format_vnet_hw_if_index_name, vnm, hw_if_indices[i],
- hw_if_indices[i]);
- vlib_cli_output (vm, " Number of qids %u", vui->num_qid);
- if (vui->enable_gso)
- vlib_cli_output (vm, " GSO enable");
- if (vui->enable_packed)
- vlib_cli_output (vm, " Packed ring enable");
- if (vui->enable_event_idx)
- vlib_cli_output (vm, " Event index enable");
-
- vlib_cli_output (vm, "virtio_net_hdr_sz %d\n"
- " features mask (0x%llx): \n"
- " features (0x%llx): \n",
- vui->virtio_net_hdr_sz, vui->feature_mask,
- vui->features);
-
- feat_entry = (struct feat_struct *) &feat_array;
- while (feat_entry->str)
- {
- if (vui->features & (1ULL << feat_entry->bit))
- vlib_cli_output (vm, " %s (%d)", feat_entry->str,
- feat_entry->bit);
- feat_entry++;
- }
-
- vlib_cli_output (vm, " protocol features (0x%llx)",
- vui->protocol_features);
- feat_entry = (struct feat_struct *) &proto_feat_array;
- while (feat_entry->str)
- {
- if (vui->protocol_features & (1ULL << feat_entry->bit))
- vlib_cli_output (vm, " %s (%d)", feat_entry->str,
- feat_entry->bit);
- feat_entry++;
- }
-
- vlib_cli_output (vm, "\n");
-
- vlib_cli_output (vm, " socket filename %s type %s errno \"%s\"\n\n",
- vui->sock_filename,
- (vui->unix_server_index != ~0) ? "server" : "client",
- strerror (vui->sock_errno));
-
- vlib_cli_output (vm, " rx placement: ");
-
- FOR_ALL_VHOST_TXQ (qid, vui)
- {
- vhost_user_vring_t *txvq = &vui->vrings[qid];
-
- if (txvq->qid == -1)
- continue;
- vlib_cli_output (vm, " thread %d on vring %d, %U\n",
- txvq->thread_index, qid, format_vnet_hw_if_rx_mode,
- txvq->mode);
- }
-
- vlib_cli_output (vm, " tx placement\n");
-
- FOR_ALL_VHOST_RXQ (qid, vui)
- {
- vhost_user_vring_t *rxvq = &vui->vrings[qid];
- vnet_hw_if_tx_queue_t *txq;
-
- if (rxvq->queue_index == ~0)
- continue;
- txq = vnet_hw_if_get_tx_queue (vnm, rxvq->queue_index);
- if (txq->threads)
- vlib_cli_output (vm, " threads %U on vring %u: %s\n",
- format_bitmap_list, txq->threads, qid,
- txq->shared_queue ? "spin-lock" : "lock-free");
- }
-
- vlib_cli_output (vm, "\n");
-
- vlib_cli_output (vm, " Memory regions (total %d)\n", vui->nregions);
-
- if (vui->nregions)
- {
- vlib_cli_output (vm,
- " region fd guest_phys_addr memory_size userspace_addr mmap_offset mmap_addr\n");
- vlib_cli_output (vm,
- " ====== ===== ================== ================== ================== ================== ==================\n");
- }
- for (j = 0; j < vui->nregions; j++)
- {
- vlib_cli_output (vm,
- " %d %-5d 0x%016lx 0x%016lx 0x%016lx 0x%016lx 0x%016lx\n",
- j, vui->region_mmap_fd[j],
- vui->regions[j].guest_phys_addr,
- vui->regions[j].memory_size,
- vui->regions[j].userspace_addr,
- vui->regions[j].mmap_offset,
- pointer_to_uword (vui->region_mmap_addr[j]));
- }
- FOR_ALL_VHOST_RX_TXQ (q, vui)
- {
- if (!vui->vrings[q].started)
- continue;
-
- vlib_cli_output (vm, "\n Virtqueue %d (%s%s)\n", q,
- (q & 1) ? "RX" : "TX",
- vui->vrings[q].enabled ? "" : " disabled");
- vlib_cli_output (vm, " global %s queue index %u\n",
- (q & 1) ? "RX" : "TX", vui->vrings[q].queue_index);
-
- vlib_cli_output (
- vm,
- " qsz %d last_avail_idx %d last_used_idx %d"
- " last_kick %u\n",
- vui->vrings[q].qsz_mask + 1, vui->vrings[q].last_avail_idx,
- vui->vrings[q].last_used_idx, vui->vrings[q].last_kick);
-
- if (vhost_user_is_packed_ring_supported (vui))
- vhost_user_show_desc_packed (vm, vui, q, show_descr, show_verbose);
- else
- vhost_user_show_desc (vm, vui, q, show_descr, show_verbose);
- }
- vlib_cli_output (vm, "\n");
- }
-done:
- vec_free (hw_if_indices);
- return error;
-}
-
-/*
- * CLI functions
- */
-
-/*?
- * Create a vHost User interface. Once created, a new virtual interface
- * will exist with the name '<em>VirtualEthernet0/0/x</em>', where '<em>x</em>'
- * is the next free index.
- *
- * There are several parameters associated with a vHost interface:
- *
- * - <b>socket <socket-filename></b> - Name of the linux socket used by
- * hypervisor and VPP to manage the vHost interface. If in <em>server</em>
- * mode, VPP will create the socket if it does not already exist. If in
- * <em>client</em> mode, hypervisor will create the socket if it does not
- * already exist. The VPP code is indifferent to the file location. However,
- * if SELinux is enabled, then the socket needs to be created in
- * <em>/var/run/vpp/</em>.
- *
- * - <b>server</b> - Optional flag to indicate that VPP should be the server
- * for the linux socket. If not provided, VPP will be the client. In
- * <em>server</em> mode, the VM can be reset without tearing down the vHost
- * Interface. In <em>client</em> mode, VPP can be reset without bringing down
- * the VM and tearing down the vHost Interface.
- *
- * - <b>feature-mask <hex></b> - Optional virtio/vhost feature set negotiated
- * at startup. <b>This is intended for degugging only.</b> It is recommended
- * that this parameter not be used except by experienced users. By default,
- * all supported features will be advertised. Otherwise, provide the set of
- * features desired.
- * - 0x000008000 (15) - VIRTIO_NET_F_MRG_RXBUF
- * - 0x000020000 (17) - VIRTIO_NET_F_CTRL_VQ
- * - 0x000200000 (21) - VIRTIO_NET_F_GUEST_ANNOUNCE
- * - 0x000400000 (22) - VIRTIO_NET_F_MQ
- * - 0x004000000 (26) - VHOST_F_LOG_ALL
- * - 0x008000000 (27) - VIRTIO_F_ANY_LAYOUT
- * - 0x010000000 (28) - VIRTIO_F_INDIRECT_DESC
- * - 0x040000000 (30) - VHOST_USER_F_PROTOCOL_FEATURES
- * - 0x100000000 (32) - VIRTIO_F_VERSION_1
- *
- * - <b>hwaddr <mac-addr></b> - Optional ethernet address, can be in either
- * X:X:X:X:X:X unix or X.X.X cisco format.
- *
- * - <b>renumber <dev_instance></b> - Optional parameter which allows the
- * instance in the name to be specified. If instance already exists, name
- * will be used anyway and multiple instances will have the same name. Use
- * with caution.
- *
- * @cliexpar
- * Example of how to create a vhost interface with VPP as the client and all
- * features enabled:
- * @cliexstart{create vhost-user socket /var/run/vpp/vhost1.sock}
- * VirtualEthernet0/0/0
- * @cliexend
- * Example of how to create a vhost interface with VPP as the server and with
- * just multiple queues enabled:
- * @cliexstart{create vhost-user socket /var/run/vpp/vhost2.sock server
- * feature-mask 0x40400000}
- * VirtualEthernet0/0/1
- * @cliexend
- * Once the vHost interface is created, enable the interface using:
- * @cliexcmd{set interface state VirtualEthernet0/0/0 up}
-?*/
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (vhost_user_connect_command, static) = {
- .path = "create vhost-user",
- .short_help = "create vhost-user socket <socket-filename> [server] "
- "[feature-mask <hex>] [hwaddr <mac-addr>] [renumber <dev_instance>] [gso] "
- "[packed] [event-idx]",
- .function = vhost_user_connect_command_fn,
- .is_mp_safe = 1,
-};
-/* *INDENT-ON* */
-
-/*?
- * Delete a vHost User interface using the interface name or the
- * software interface index. Use the '<em>show interface</em>'
- * command to determine the software interface index. On deletion,
- * the linux socket will not be deleted.
- *
- * @cliexpar
- * Example of how to delete a vhost interface by name:
- * @cliexcmd{delete vhost-user VirtualEthernet0/0/1}
- * Example of how to delete a vhost interface by software interface index:
- * @cliexcmd{delete vhost-user sw_if_index 1}
-?*/
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (vhost_user_delete_command, static) = {
- .path = "delete vhost-user",
- .short_help = "delete vhost-user {<interface> | sw_if_index <sw_idx>}",
- .function = vhost_user_delete_command_fn,
-};
-
-/*?
- * Display the attributes of a single vHost User interface (provide interface
- * name), multiple vHost User interfaces (provide a list of interface names
- * separated by spaces) or all Vhost User interfaces (omit an interface name
- * to display all vHost interfaces).
- *
- * @cliexpar
- * @parblock
- * Example of how to display a vhost interface:
- * @cliexstart{show vhost-user VirtualEthernet0/0/0}
- * Virtio vhost-user interfaces
- * Global:
- * coalesce frames 32 time 1e-3
- * Interface: VirtualEthernet0/0/0 (ifindex 1)
- * virtio_net_hdr_sz 12
- * features mask (0xffffffffffffffff):
- * features (0x50408000):
- * VIRTIO_NET_F_MRG_RXBUF (15)
- * VIRTIO_NET_F_MQ (22)
- * VIRTIO_F_INDIRECT_DESC (28)
- * VHOST_USER_F_PROTOCOL_FEATURES (30)
- * protocol features (0x3)
- * VHOST_USER_PROTOCOL_F_MQ (0)
- * VHOST_USER_PROTOCOL_F_LOG_SHMFD (1)
- *
- * socket filename /var/run/vpp/vhost1.sock type client errno "Success"
- *
- * rx placement:
- * thread 1 on vring 1
- * thread 1 on vring 5
- * thread 2 on vring 3
- * thread 2 on vring 7
- * tx placement: spin-lock
- * thread 0 on vring 0
- * thread 1 on vring 2
- * thread 2 on vring 0
- *
- * Memory regions (total 2)
- * region fd guest_phys_addr memory_size userspace_addr mmap_offset mmap_addr
- * ====== == =============== =========== ============== =========== ==========
- * 0 60 0x00000000 0x000a0000 0xaac00000 0x00000000 0x2b400000
- * 1 61 0x000c0000 0x3ff40000 0xaacc0000 0x000c0000 0xabcc0000
- *
- * Virtqueue 0 (TX)
- * qsz 256 last_avail_idx 0 last_used_idx 0
- * avail.flags 1 avail.idx 128 used.flags 1 used.idx 0
- * kickfd 62 callfd 64 errfd -1
- *
- * Virtqueue 1 (RX)
- * qsz 256 last_avail_idx 0 last_used_idx 0
- * avail.flags 1 avail.idx 0 used.flags 1 used.idx 0
- * kickfd 65 callfd 66 errfd -1
- *
- * Virtqueue 2 (TX)
- * qsz 256 last_avail_idx 0 last_used_idx 0
- * avail.flags 1 avail.idx 128 used.flags 1 used.idx 0
- * kickfd 63 callfd 70 errfd -1
- *
- * Virtqueue 3 (RX)
- * qsz 256 last_avail_idx 0 last_used_idx 0
- * avail.flags 1 avail.idx 0 used.flags 1 used.idx 0
- * kickfd 72 callfd 74 errfd -1
- *
- * Virtqueue 4 (TX disabled)
- * qsz 256 last_avail_idx 0 last_used_idx 0
- * avail.flags 1 avail.idx 0 used.flags 1 used.idx 0
- * kickfd 76 callfd 78 errfd -1
- *
- * Virtqueue 5 (RX disabled)
- * qsz 256 last_avail_idx 0 last_used_idx 0
- * avail.flags 1 avail.idx 0 used.flags 1 used.idx 0
- * kickfd 80 callfd 82 errfd -1
- *
- * Virtqueue 6 (TX disabled)
- * qsz 256 last_avail_idx 0 last_used_idx 0
- * avail.flags 1 avail.idx 0 used.flags 1 used.idx 0
- * kickfd 84 callfd 86 errfd -1
- *
- * Virtqueue 7 (RX disabled)
- * qsz 256 last_avail_idx 0 last_used_idx 0
- * avail.flags 1 avail.idx 0 used.flags 1 used.idx 0
- * kickfd 88 callfd 90 errfd -1
- *
- * @cliexend
- *
- * The optional '<em>descriptors</em>' parameter will display the same output
- * as the previous example but will include the descriptor table for each
- * queue.
- * The output is truncated below:
- * @cliexstart{show vhost-user VirtualEthernet0/0/0 descriptors}
- * Virtio vhost-user interfaces
- * Global:
- * coalesce frames 32 time 1e-3
- * Interface: VirtualEthernet0/0/0 (ifindex 1)
- * virtio_net_hdr_sz 12
- * features mask (0xffffffffffffffff):
- * features (0x50408000):
- * VIRTIO_NET_F_MRG_RXBUF (15)
- * VIRTIO_NET_F_MQ (22)
- * :
- * Virtqueue 0 (TX)
- * qsz 256 last_avail_idx 0 last_used_idx 0
- * avail.flags 1 avail.idx 128 used.flags 1 used.idx 0
- * kickfd 62 callfd 64 errfd -1
- *
- * descriptor table:
- * id addr len flags next user_addr
- * ===== ================== ===== ====== ===== ==================
- * 0 0x0000000010b6e974 2060 0x0002 1 0x00002aabbc76e974
- * 1 0x0000000010b6e034 2060 0x0002 2 0x00002aabbc76e034
- * 2 0x0000000010b6d6f4 2060 0x0002 3 0x00002aabbc76d6f4
- * 3 0x0000000010b6cdb4 2060 0x0002 4 0x00002aabbc76cdb4
- * 4 0x0000000010b6c474 2060 0x0002 5 0x00002aabbc76c474
- * 5 0x0000000010b6bb34 2060 0x0002 6 0x00002aabbc76bb34
- * 6 0x0000000010b6b1f4 2060 0x0002 7 0x00002aabbc76b1f4
- * 7 0x0000000010b6a8b4 2060 0x0002 8 0x00002aabbc76a8b4
- * 8 0x0000000010b69f74 2060 0x0002 9 0x00002aabbc769f74
- * 9 0x0000000010b69634 2060 0x0002 10 0x00002aabbc769634
- * 10 0x0000000010b68cf4 2060 0x0002 11 0x00002aabbc768cf4
- * :
- * 249 0x0000000000000000 0 0x0000 250 0x00002aab2b400000
- * 250 0x0000000000000000 0 0x0000 251 0x00002aab2b400000
- * 251 0x0000000000000000 0 0x0000 252 0x00002aab2b400000
- * 252 0x0000000000000000 0 0x0000 253 0x00002aab2b400000
- * 253 0x0000000000000000 0 0x0000 254 0x00002aab2b400000
- * 254 0x0000000000000000 0 0x0000 255 0x00002aab2b400000
- * 255 0x0000000000000000 0 0x0000 32768 0x00002aab2b400000
- *
- * Virtqueue 1 (RX)
- * qsz 256 last_avail_idx 0 last_used_idx 0
- * :
- * @cliexend
- * @endparblock
-?*/
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (show_vhost_user_command, static) = {
- .path = "show vhost-user",
- .short_help = "show vhost-user [<interface> [<interface> [..]]] "
- "[[descriptors] [verbose]]",
- .function = show_vhost_user_command_fn,
-};
-/* *INDENT-ON* */
-
-
-static clib_error_t *
-vhost_user_config (vlib_main_t * vm, unformat_input_t * input)
-{
- vhost_user_main_t *vum = &vhost_user_main;
-
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (input, "coalesce-frames %d", &vum->coalesce_frames))
- ;
- else if (unformat (input, "coalesce-time %f", &vum->coalesce_time))
- ;
- else if (unformat (input, "dont-dump-memory"))
- vum->dont_dump_vhost_user_memory = 1;
- else
- return clib_error_return (0, "unknown input `%U'",
- format_unformat_error, input);
- }
-
- return 0;
-}
-
-/* vhost-user { ... } configuration. */
-VLIB_CONFIG_FUNCTION (vhost_user_config, "vhost-user");
-
-void
-vhost_user_unmap_all (void)
-{
- vhost_user_main_t *vum = &vhost_user_main;
- vhost_user_intf_t *vui;
-
- if (vum->dont_dump_vhost_user_memory)
- {
- pool_foreach (vui, vum->vhost_user_interfaces)
- unmap_all_mem_regions (vui);
- }
-}
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */