2 *------------------------------------------------------------------
3 * virtio_api.c - vnet virtio pci device driver API support
5 * Copyright (c) 2018 Cisco and/or its affiliates.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at:
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 *------------------------------------------------------------------
20 #include <vnet/vnet.h>
21 #include <vlibmemory/api.h>
23 #include <vnet/interface.h>
24 #include <vnet/api_errno.h>
25 #include <vnet/devices/virtio/virtio.h>
26 #include <vnet/devices/virtio/pci.h>
27 #include <vlib/pci/pci_types_api.h>
29 #include <vnet/format_fns.h>
30 #include <vnet/devices/virtio/virtio.api_enum.h>
31 #include <vnet/devices/virtio/virtio.api_types.h>
33 #define REPLY_MSG_ID_BASE virtio_main.msg_id_base
34 #include <vlibapi/api_helper_macros.h>
36 /* It will be deprecated in 21.01 */
38 vl_api_virtio_pci_create_t_handler (vl_api_virtio_pci_create_t * mp)
40 vlib_main_t *vm = vlib_get_main ();
41 vl_api_virtio_pci_create_reply_t *rmp;
42 vl_api_registration_t *reg;
43 virtio_pci_create_if_args_t _a, *ap = &_a;
45 clib_memset (ap, 0, sizeof (*ap));
47 pci_address_decode (&mp->pci_addr, (vlib_pci_addr_t *) & ap->addr);
48 if (!mp->use_random_mac)
50 clib_memcpy (ap->mac_addr, mp->mac_address, 6);
53 ap->sw_if_index = (u32) ~ 0;
58 if (mp->checksum_offload_enabled)
59 ap->checksum_offload_enabled = 1;
61 ap->checksum_offload_enabled = 0;
63 ap->features = clib_net_to_host_u64 (mp->features);
65 virtio_pci_create_if (vm, ap);
67 reg = vl_api_client_index_to_registration (mp->client_index);
71 rmp = vl_msg_api_alloc (sizeof (*rmp));
72 rmp->_vl_msg_id = htons (REPLY_MSG_ID_BASE + VL_API_VIRTIO_PCI_CREATE_REPLY);
73 rmp->context = mp->context;
74 rmp->retval = htonl (ap->rv);
75 rmp->sw_if_index = htonl (ap->sw_if_index);
77 vl_api_send_msg (reg, (u8 *) rmp);
81 vl_api_virtio_pci_create_v2_t_handler (vl_api_virtio_pci_create_v2_t * mp)
83 vlib_main_t *vm = vlib_get_main ();
84 vl_api_virtio_pci_create_v2_reply_t *rmp;
85 vl_api_registration_t *reg;
86 virtio_pci_create_if_args_t _a, *ap = &_a;
88 clib_memset (ap, 0, sizeof (*ap));
90 pci_address_decode (&mp->pci_addr, (vlib_pci_addr_t *) & ap->addr);
91 if (!mp->use_random_mac)
93 clib_memcpy (ap->mac_addr, mp->mac_address, 6);
96 ap->sw_if_index = (u32) ~ 0;
98 STATIC_ASSERT (((int) VIRTIO_API_FLAG_GSO == (int) VIRTIO_FLAG_GSO),
99 "virtio gso api flag mismatch");
100 STATIC_ASSERT (((int) VIRTIO_API_FLAG_CSUM_OFFLOAD ==
101 (int) VIRTIO_FLAG_CSUM_OFFLOAD),
102 "virtio checksum offload api flag mismatch");
103 STATIC_ASSERT (((int) VIRTIO_API_FLAG_GRO_COALESCE ==
104 (int) VIRTIO_FLAG_GRO_COALESCE),
105 "virtio gro coalesce api flag mismatch");
106 STATIC_ASSERT (((int) VIRTIO_API_FLAG_PACKED == (int) VIRTIO_FLAG_PACKED),
107 "virtio packed api flag mismatch");
108 STATIC_ASSERT (((int) VIRTIO_API_FLAG_IN_ORDER ==
109 (int) VIRTIO_FLAG_IN_ORDER),
110 "virtio in-order api flag mismatch");
111 STATIC_ASSERT (((int) VIRTIO_API_FLAG_BUFFERING ==
112 (int) VIRTIO_FLAG_BUFFERING),
113 "virtio buffering api flag mismatch");
115 ap->virtio_flags = clib_net_to_host_u32 (mp->virtio_flags);
116 ap->features = clib_net_to_host_u64 (mp->features);
118 if (ap->virtio_flags & VIRTIO_API_FLAG_GSO)
122 if (ap->virtio_flags & VIRTIO_API_FLAG_CSUM_OFFLOAD)
123 ap->checksum_offload_enabled = 1;
125 ap->checksum_offload_enabled = 0;
127 virtio_pci_create_if (vm, ap);
129 reg = vl_api_client_index_to_registration (mp->client_index);
133 rmp = vl_msg_api_alloc (sizeof (*rmp));
135 htons (REPLY_MSG_ID_BASE + VL_API_VIRTIO_PCI_CREATE_V2_REPLY);
136 rmp->context = mp->context;
137 rmp->retval = htonl (ap->rv);
138 rmp->sw_if_index = htonl (ap->sw_if_index);
140 vl_api_send_msg (reg, (u8 *) rmp);
144 vl_api_virtio_pci_delete_t_handler (vl_api_virtio_pci_delete_t * mp)
146 vnet_main_t *vnm = vnet_get_main ();
147 vlib_main_t *vm = vlib_get_main ();
148 virtio_main_t *vim = &virtio_main;
150 vnet_hw_interface_t *hw;
152 vl_api_virtio_pci_delete_reply_t *rmp;
153 vl_api_registration_t *reg;
156 vnet_get_sup_hw_interface_api_visible_or_null (vnm,
157 htonl (mp->sw_if_index));
158 if (hw == NULL || virtio_device_class.index != hw->dev_class_index)
160 rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
164 vif = pool_elt_at_index (vim->interfaces, hw->dev_instance);
166 rv = virtio_pci_delete_if (vm, vif);
169 reg = vl_api_client_index_to_registration (mp->client_index);
173 rmp = vl_msg_api_alloc (sizeof (*rmp));
174 rmp->_vl_msg_id = htons (REPLY_MSG_ID_BASE + VL_API_VIRTIO_PCI_DELETE_REPLY);
175 rmp->context = mp->context;
176 rmp->retval = htonl (rv);
178 vl_api_send_msg (reg, (u8 *) rmp);
182 virtio_pci_send_sw_interface_details (vpe_api_main_t * am,
183 vl_api_registration_t * reg,
184 virtio_if_t * vif, u32 context)
186 vl_api_sw_interface_virtio_pci_details_t *mp;
187 mp = vl_msg_api_alloc (sizeof (*mp));
189 clib_memset (mp, 0, sizeof (*mp));
192 htons (REPLY_MSG_ID_BASE + VL_API_SW_INTERFACE_VIRTIO_PCI_DETAILS);
193 pci_address_encode ((vlib_pci_addr_t *) & vif->pci_addr.as_u32,
195 mp->sw_if_index = htonl (vif->sw_if_index);
196 vnet_virtio_vring_t *vring = vec_elt_at_index (vif->rxq_vrings, 0);
197 mp->rx_ring_sz = htons (vring->queue_size);
198 vring = vec_elt_at_index (vif->txq_vrings, 0);
199 mp->tx_ring_sz = htons (vring->queue_size);
200 clib_memcpy (mp->mac_addr, vif->mac_addr, 6);
201 mp->features = clib_host_to_net_u64 (vif->features);
203 mp->context = context;
204 vl_api_send_msg (reg, (u8 *) mp);
208 vl_api_sw_interface_virtio_pci_dump_t_handler
209 (vl_api_sw_interface_virtio_pci_dump_t * mp)
211 vpe_api_main_t *am = &vpe_api_main;
212 vl_api_registration_t *reg;
213 virtio_main_t *vmx = &virtio_main;
216 reg = vl_api_client_index_to_registration (mp->client_index);
220 pool_foreach (vif, vmx->interfaces)
222 if (vif->type == VIRTIO_IF_TYPE_PCI)
224 virtio_pci_send_sw_interface_details (am, reg, vif, mp->context);
229 #include <vnet/devices/virtio/virtio.api.c>
231 static clib_error_t *
232 virtio_pci_api_hookup (vlib_main_t * vm)
235 * Set up the (msg_name, crc, message-id) table
237 REPLY_MSG_ID_BASE = setup_message_id_table ();
242 VLIB_API_INIT_FUNCTION (virtio_pci_api_hookup);
245 * fd.io coding-style-patch-verification: ON
248 * eval: (c-set-style "gnu")