diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/vnet/devices/virtio/pci.c | 54 |
1 files changed, 32 insertions, 22 deletions
diff --git a/src/vnet/devices/virtio/pci.c b/src/vnet/devices/virtio/pci.c index aeb519bb28d..825cba1bb60 100644 --- a/src/vnet/devices/virtio/pci.c +++ b/src/vnet/devices/virtio/pci.c @@ -452,31 +452,26 @@ debug_device_config_space (vlib_main_t * vm, virtio_if_t * vif) } } -struct virtio_ctrl_mq_status_hdr +struct virtio_ctrl_msg { struct virtio_net_ctrl_hdr ctrl; - struct virtio_net_ctrl_mq num_mqs; virtio_net_ctrl_ack status; + u8 data[1024]; }; static int -virtio_pci_enable_multiqueue (vlib_main_t * vm, virtio_if_t * vif, - u16 num_queues) +virtio_pci_send_ctrl_msg (vlib_main_t * vm, virtio_if_t * vif, + struct virtio_ctrl_msg *data, u32 len) { virtio_main_t *vim = &virtio_main; virtio_vring_t *vring = vif->cxq_vring; + virtio_net_ctrl_ack status = VIRTIO_NET_ERR; + struct virtio_ctrl_msg result; u32 buffer_index; vlib_buffer_t *b; u16 used, next, avail; u16 sz = vring->size; u16 mask = sz - 1; - struct virtio_ctrl_mq_status_hdr mq_hdr, result; - virtio_net_ctrl_ack status = VIRTIO_NET_ERR; - - mq_hdr.ctrl.class = VIRTIO_NET_CTRL_MQ; - mq_hdr.ctrl.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET; - mq_hdr.status = VIRTIO_NET_ERR; - mq_hdr.num_mqs.virtqueue_pairs = num_queues; used = vring->desc_in_use; next = vring->desc_next; @@ -492,8 +487,8 @@ virtio_pci_enable_multiqueue (vlib_main_t * vm, virtio_if_t * vif, * previous offset. */ b->current_data = 0; - clib_memcpy (vlib_buffer_get_current (b), &mq_hdr, - sizeof (struct virtio_ctrl_mq_status_hdr)); + clib_memcpy (vlib_buffer_get_current (b), data, + sizeof (struct virtio_ctrl_msg)); d->flags = VRING_DESC_F_NEXT; d->addr = vlib_buffer_get_current_pa (vm, b); d->len = sizeof (struct virtio_net_ctrl_hdr); @@ -506,8 +501,8 @@ virtio_pci_enable_multiqueue (vlib_main_t * vm, virtio_if_t * vif, d = &vring->desc[next]; d->flags = VRING_DESC_F_NEXT; d->addr = vlib_buffer_get_current_pa (vm, b) + - STRUCT_OFFSET_OF (struct virtio_ctrl_mq_status_hdr, num_mqs); - d->len = sizeof (struct virtio_net_ctrl_mq); + STRUCT_OFFSET_OF (struct virtio_ctrl_msg, data); + d->len = len; next = (next + 1) & mask; d->next = next; used++; @@ -515,8 +510,8 @@ virtio_pci_enable_multiqueue (vlib_main_t * vm, virtio_if_t * vif, d = &vring->desc[next]; d->flags = VRING_DESC_F_WRITE; d->addr = vlib_buffer_get_current_pa (vm, b) + - STRUCT_OFFSET_OF (struct virtio_ctrl_mq_status_hdr, status); - d->len = sizeof (mq_hdr.status); + STRUCT_OFFSET_OF (struct virtio_ctrl_msg, status); + d->len = sizeof (data->status); next = (next + 1) & mask; used++; @@ -530,7 +525,6 @@ virtio_pci_enable_multiqueue (vlib_main_t * vm, virtio_if_t * vif, virtio_kick (vm, vring, vif); } - clib_memset (&result, 0, sizeof (result)); u16 last = vring->last_used_idx, n_left = 0; n_left = vring->used->idx - last; @@ -555,15 +549,31 @@ virtio_pci_enable_multiqueue (vlib_main_t * vm, virtio_if_t * vif, CLIB_MEMORY_BARRIER (); clib_memcpy (&result, vlib_buffer_get_current (b), - sizeof (struct virtio_ctrl_mq_status_hdr)); - - virtio_log_debug (vim, vif, "multi-queue enable status on Ctrl queue : %u", - result.status); + sizeof (struct virtio_ctrl_msg)); + virtio_log_debug (vim, vif, "ctrl-queue: status %u", result.status); status = result.status; vlib_buffer_free (vm, &buffer_index, 1); return status; } +static int +virtio_pci_enable_multiqueue (vlib_main_t * vm, virtio_if_t * vif, + u16 num_queues) +{ + virtio_main_t *vim = &virtio_main; + struct virtio_ctrl_msg mq_hdr; + virtio_net_ctrl_ack status = VIRTIO_NET_ERR; + + mq_hdr.ctrl.class = VIRTIO_NET_CTRL_MQ; + mq_hdr.ctrl.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET; + mq_hdr.status = VIRTIO_NET_ERR; + clib_memcpy (mq_hdr.data, &num_queues, sizeof (num_queues)); + + status = virtio_pci_send_ctrl_msg (vm, vif, &mq_hdr, sizeof (num_queues)); + virtio_log_debug (vim, vif, "multi-queue enable %u queues", num_queues); + return status; +} + static u8 virtio_pci_queue_size_valid (u16 qsz) { |