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/*
*------------------------------------------------------------------
* virtio_api.c - vnet virtio pci device driver API support
*
* Copyright (c) 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 <vnet/vnet.h>
#include <vlibmemory/api.h>
#include <vnet/interface.h>
#include <vnet/api_errno.h>
#include <vnet/devices/virtio/virtio.h>
#include <vnet/devices/virtio/pci.h>
#include <vlib/pci/pci_types_api.h>
#include <vnet/format_fns.h>
#include <vnet/devices/virtio/virtio.api_enum.h>
#include <vnet/devices/virtio/virtio.api_types.h>
#define REPLY_MSG_ID_BASE virtio_main.msg_id_base
#include <vlibapi/api_helper_macros.h>
/* It will be deprecated in 21.01 */
static void
vl_api_virtio_pci_create_t_handler (vl_api_virtio_pci_create_t * mp)
{
vlib_main_t *vm = vlib_get_main ();
vl_api_virtio_pci_create_reply_t *rmp;
vl_api_registration_t *reg;
virtio_pci_create_if_args_t _a, *ap = &_a;
clib_memset (ap, 0, sizeof (*ap));
pci_address_decode (&mp->pci_addr, (vlib_pci_addr_t *) & ap->addr);
if (!mp->use_random_mac)
{
clib_memcpy (ap->mac_addr, mp->mac_address, 6);
ap->mac_addr_set = 1;
}
ap->sw_if_index = (u32) ~ 0;
if (mp->gso_enabled)
ap->gso_enabled = 1;
else
ap->gso_enabled = 0;
if (mp->checksum_offload_enabled)
ap->checksum_offload_enabled = 1;
else
ap->checksum_offload_enabled = 0;
ap->features = clib_net_to_host_u64 (mp->features);
virtio_pci_create_if (vm, ap);
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;;
rmp = vl_msg_api_alloc (sizeof (*rmp));
rmp->_vl_msg_id = htons (REPLY_MSG_ID_BASE + VL_API_VIRTIO_PCI_CREATE_REPLY);
rmp->context = mp->context;
rmp->retval = htonl (ap->rv);
rmp->sw_if_index = htonl (ap->sw_if_index);
vl_api_send_msg (reg, (u8 *) rmp);
}
static void
vl_api_virtio_pci_create_v2_t_handler (vl_api_virtio_pci_create_v2_t * mp)
{
vlib_main_t *vm = vlib_get_main ();
vl_api_virtio_pci_create_v2_reply_t *rmp;
vl_api_registration_t *reg;
virtio_pci_create_if_args_t _a, *ap = &_a;
clib_memset (ap, 0, sizeof (*ap));
pci_address_decode (&mp->pci_addr, (vlib_pci_addr_t *) & ap->addr);
if (!mp->use_random_mac)
{
clib_memcpy (ap->mac_addr, mp->mac_address, 6);
ap->mac_addr_set = 1;
}
ap->sw_if_index = (u32) ~ 0;
STATIC_ASSERT (((int) VIRTIO_API_FLAG_GSO == (int) VIRTIO_FLAG_GSO),
"virtio gso api flag mismatch");
STATIC_ASSERT (((int) VIRTIO_API_FLAG_CSUM_OFFLOAD ==
(int) VIRTIO_FLAG_CSUM_OFFLOAD),
"virtio checksum offload api flag mismatch");
STATIC_ASSERT (((int) VIRTIO_API_FLAG_GRO_COALESCE ==
(int) VIRTIO_FLAG_GRO_COALESCE),
"virtio gro coalesce api flag mismatch");
STATIC_ASSERT (((int) VIRTIO_API_FLAG_PACKED == (int) VIRTIO_FLAG_PACKED),
"virtio packed api flag mismatch");
STATIC_ASSERT (((int) VIRTIO_API_FLAG_IN_ORDER ==
(int) VIRTIO_FLAG_IN_ORDER),
"virtio in-order api flag mismatch");
STATIC_ASSERT (((int) VIRTIO_API_FLAG_BUFFERING ==
(int) VIRTIO_FLAG_BUFFERING),
"virtio buffering api flag mismatch");
STATIC_ASSERT (((int) VIRTIO_API_FLAG_RSS == (int) VIRTIO_FLAG_RSS),
"virtio rss api flag mismatch");
ap->virtio_flags = clib_net_to_host_u32 (mp->virtio_flags);
ap->features = clib_net_to_host_u64 (mp->features);
if (ap->virtio_flags & VIRTIO_API_FLAG_GSO)
ap->gso_enabled = 1;
if (ap->virtio_flags & VIRTIO_API_FLAG_CSUM_OFFLOAD)
ap->checksum_offload_enabled = 1;
if (ap->virtio_flags & VIRTIO_API_FLAG_RSS)
ap->rss_enabled = 1;
virtio_pci_create_if (vm, ap);
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;;
rmp = vl_msg_api_alloc (sizeof (*rmp));
rmp->_vl_msg_id =
htons (REPLY_MSG_ID_BASE + VL_API_VIRTIO_PCI_CREATE_V2_REPLY);
rmp->context = mp->context;
rmp->retval = htonl (ap->rv);
rmp->sw_if_index = htonl (ap->sw_if_index);
vl_api_send_msg (reg, (u8 *) rmp);
}
static void
vl_api_virtio_pci_delete_t_handler (vl_api_virtio_pci_delete_t * mp)
{
vnet_main_t *vnm = vnet_get_main ();
vlib_main_t *vm = vlib_get_main ();
virtio_main_t *vim = &virtio_main;
int rv = 0;
vnet_hw_interface_t *hw;
virtio_if_t *vif;
vl_api_virtio_pci_delete_reply_t *rmp;
vl_api_registration_t *reg;
hw =
vnet_get_sup_hw_interface_api_visible_or_null (vnm,
htonl (mp->sw_if_index));
if (hw == NULL || virtio_device_class.index != hw->dev_class_index)
{
rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
goto reply;
}
vif = pool_elt_at_index (vim->interfaces, hw->dev_instance);
rv = virtio_pci_delete_if (vm, vif);
reply:
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;
rmp = vl_msg_api_alloc (sizeof (*rmp));
rmp->_vl_msg_id = htons (REPLY_MSG_ID_BASE + VL_API_VIRTIO_PCI_DELETE_REPLY);
rmp->context = mp->context;
rmp->retval = htonl (rv);
vl_api_send_msg (reg, (u8 *) rmp);
}
static void
virtio_pci_send_sw_interface_details (vpe_api_main_t * am,
vl_api_registration_t * reg,
virtio_if_t * vif, u32 context)
{
vl_api_sw_interface_virtio_pci_details_t *mp;
mp = vl_msg_api_alloc (sizeof (*mp));
clib_memset (mp, 0, sizeof (*mp));
mp->_vl_msg_id =
htons (REPLY_MSG_ID_BASE + VL_API_SW_INTERFACE_VIRTIO_PCI_DETAILS);
pci_address_encode ((vlib_pci_addr_t *) & vif->pci_addr.as_u32,
&mp->pci_addr);
mp->sw_if_index = htonl (vif->sw_if_index);
vnet_virtio_vring_t *vring = vec_elt_at_index (vif->rxq_vrings, 0);
mp->rx_ring_sz = htons (vring->queue_size);
vring = vec_elt_at_index (vif->txq_vrings, 0);
mp->tx_ring_sz = htons (vring->queue_size);
clib_memcpy (mp->mac_addr, vif->mac_addr, 6);
mp->features = clib_host_to_net_u64 (vif->features);
mp->context = context;
vl_api_send_msg (reg, (u8 *) mp);
}
static void
vl_api_sw_interface_virtio_pci_dump_t_handler
(vl_api_sw_interface_virtio_pci_dump_t * mp)
{
vpe_api_main_t *am = &vpe_api_main;
vl_api_registration_t *reg;
virtio_main_t *vmx = &virtio_main;
virtio_if_t *vif;
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;
pool_foreach (vif, vmx->interfaces)
{
if (vif->type == VIRTIO_IF_TYPE_PCI)
{
virtio_pci_send_sw_interface_details (am, reg, vif, mp->context);
}
}
}
#include <vnet/devices/virtio/virtio.api.c>
static clib_error_t *
virtio_pci_api_hookup (vlib_main_t * vm)
{
/*
* Set up the (msg_name, crc, message-id) table
*/
REPLY_MSG_ID_BASE = setup_message_id_table ();
return 0;
}
VLIB_API_INIT_FUNCTION (virtio_pci_api_hookup);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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