Line data Source code
1 : /*
2 : *------------------------------------------------------------------
3 : * virtio_api.c - vnet virtio pci device driver API support
4 : *
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:
9 : *
10 : * http://www.apache.org/licenses/LICENSE-2.0
11 : *
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 : *------------------------------------------------------------------
18 : */
19 :
20 : #include <vnet/vnet.h>
21 : #include <vlibmemory/api.h>
22 :
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>
28 :
29 : #include <vnet/format_fns.h>
30 : #include <vnet/devices/virtio/virtio.api_enum.h>
31 : #include <vnet/devices/virtio/virtio.api_types.h>
32 :
33 : #define REPLY_MSG_ID_BASE virtio_main.msg_id_base
34 : #include <vlibapi/api_helper_macros.h>
35 :
36 : /* It will be deprecated in 21.01 */
37 : static void
38 0 : vl_api_virtio_pci_create_t_handler (vl_api_virtio_pci_create_t * mp)
39 : {
40 0 : vlib_main_t *vm = vlib_get_main ();
41 : vl_api_virtio_pci_create_reply_t *rmp;
42 : vl_api_registration_t *reg;
43 0 : virtio_pci_create_if_args_t _a, *ap = &_a;
44 :
45 0 : clib_memset (ap, 0, sizeof (*ap));
46 :
47 0 : pci_address_decode (&mp->pci_addr, (vlib_pci_addr_t *) & ap->addr);
48 0 : if (!mp->use_random_mac)
49 : {
50 0 : clib_memcpy (ap->mac_addr, mp->mac_address, 6);
51 0 : ap->mac_addr_set = 1;
52 : }
53 0 : ap->sw_if_index = (u32) ~ 0;
54 0 : if (mp->gso_enabled)
55 0 : ap->gso_enabled = 1;
56 : else
57 0 : ap->gso_enabled = 0;
58 0 : if (mp->checksum_offload_enabled)
59 0 : ap->checksum_offload_enabled = 1;
60 : else
61 0 : ap->checksum_offload_enabled = 0;
62 :
63 0 : ap->features = clib_net_to_host_u64 (mp->features);
64 :
65 0 : virtio_pci_create_if (vm, ap);
66 :
67 0 : reg = vl_api_client_index_to_registration (mp->client_index);
68 0 : if (!reg)
69 0 : return;;
70 :
71 0 : rmp = vl_msg_api_alloc (sizeof (*rmp));
72 0 : rmp->_vl_msg_id = htons (REPLY_MSG_ID_BASE + VL_API_VIRTIO_PCI_CREATE_REPLY);
73 0 : rmp->context = mp->context;
74 0 : rmp->retval = htonl (ap->rv);
75 0 : rmp->sw_if_index = htonl (ap->sw_if_index);
76 :
77 0 : vl_api_send_msg (reg, (u8 *) rmp);
78 : }
79 :
80 : static void
81 0 : vl_api_virtio_pci_create_v2_t_handler (vl_api_virtio_pci_create_v2_t * mp)
82 : {
83 0 : vlib_main_t *vm = vlib_get_main ();
84 : vl_api_virtio_pci_create_v2_reply_t *rmp;
85 : vl_api_registration_t *reg;
86 0 : virtio_pci_create_if_args_t _a, *ap = &_a;
87 :
88 0 : clib_memset (ap, 0, sizeof (*ap));
89 :
90 0 : pci_address_decode (&mp->pci_addr, (vlib_pci_addr_t *) & ap->addr);
91 0 : if (!mp->use_random_mac)
92 : {
93 0 : clib_memcpy (ap->mac_addr, mp->mac_address, 6);
94 0 : ap->mac_addr_set = 1;
95 : }
96 0 : ap->sw_if_index = (u32) ~ 0;
97 :
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");
114 :
115 0 : ap->virtio_flags = clib_net_to_host_u32 (mp->virtio_flags);
116 0 : ap->features = clib_net_to_host_u64 (mp->features);
117 :
118 0 : if (ap->virtio_flags & VIRTIO_API_FLAG_GSO)
119 0 : ap->gso_enabled = 1;
120 : else
121 0 : ap->gso_enabled = 0;
122 0 : if (ap->virtio_flags & VIRTIO_API_FLAG_CSUM_OFFLOAD)
123 0 : ap->checksum_offload_enabled = 1;
124 : else
125 0 : ap->checksum_offload_enabled = 0;
126 :
127 0 : virtio_pci_create_if (vm, ap);
128 :
129 0 : reg = vl_api_client_index_to_registration (mp->client_index);
130 0 : if (!reg)
131 0 : return;;
132 :
133 0 : rmp = vl_msg_api_alloc (sizeof (*rmp));
134 0 : rmp->_vl_msg_id =
135 0 : htons (REPLY_MSG_ID_BASE + VL_API_VIRTIO_PCI_CREATE_V2_REPLY);
136 0 : rmp->context = mp->context;
137 0 : rmp->retval = htonl (ap->rv);
138 0 : rmp->sw_if_index = htonl (ap->sw_if_index);
139 :
140 0 : vl_api_send_msg (reg, (u8 *) rmp);
141 : }
142 :
143 : static void
144 0 : vl_api_virtio_pci_delete_t_handler (vl_api_virtio_pci_delete_t * mp)
145 : {
146 0 : vnet_main_t *vnm = vnet_get_main ();
147 0 : vlib_main_t *vm = vlib_get_main ();
148 0 : virtio_main_t *vim = &virtio_main;
149 0 : int rv = 0;
150 : vnet_hw_interface_t *hw;
151 : virtio_if_t *vif;
152 : vl_api_virtio_pci_delete_reply_t *rmp;
153 : vl_api_registration_t *reg;
154 :
155 : hw =
156 0 : vnet_get_sup_hw_interface_api_visible_or_null (vnm,
157 : htonl (mp->sw_if_index));
158 0 : if (hw == NULL || virtio_device_class.index != hw->dev_class_index)
159 : {
160 0 : rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
161 0 : goto reply;
162 : }
163 :
164 0 : vif = pool_elt_at_index (vim->interfaces, hw->dev_instance);
165 :
166 0 : rv = virtio_pci_delete_if (vm, vif);
167 :
168 0 : reply:
169 0 : reg = vl_api_client_index_to_registration (mp->client_index);
170 0 : if (!reg)
171 0 : return;
172 :
173 0 : rmp = vl_msg_api_alloc (sizeof (*rmp));
174 0 : rmp->_vl_msg_id = htons (REPLY_MSG_ID_BASE + VL_API_VIRTIO_PCI_DELETE_REPLY);
175 0 : rmp->context = mp->context;
176 0 : rmp->retval = htonl (rv);
177 :
178 0 : vl_api_send_msg (reg, (u8 *) rmp);
179 : }
180 :
181 : static void
182 0 : virtio_pci_send_sw_interface_details (vpe_api_main_t * am,
183 : vl_api_registration_t * reg,
184 : virtio_if_t * vif, u32 context)
185 : {
186 : vl_api_sw_interface_virtio_pci_details_t *mp;
187 0 : mp = vl_msg_api_alloc (sizeof (*mp));
188 :
189 0 : clib_memset (mp, 0, sizeof (*mp));
190 :
191 0 : mp->_vl_msg_id =
192 0 : htons (REPLY_MSG_ID_BASE + VL_API_SW_INTERFACE_VIRTIO_PCI_DETAILS);
193 0 : pci_address_encode ((vlib_pci_addr_t *) & vif->pci_addr.as_u32,
194 0 : &mp->pci_addr);
195 0 : mp->sw_if_index = htonl (vif->sw_if_index);
196 0 : vnet_virtio_vring_t *vring = vec_elt_at_index (vif->rxq_vrings, 0);
197 0 : mp->rx_ring_sz = htons (vring->queue_size);
198 0 : vring = vec_elt_at_index (vif->txq_vrings, 0);
199 0 : mp->tx_ring_sz = htons (vring->queue_size);
200 0 : clib_memcpy (mp->mac_addr, vif->mac_addr, 6);
201 0 : mp->features = clib_host_to_net_u64 (vif->features);
202 :
203 0 : mp->context = context;
204 0 : vl_api_send_msg (reg, (u8 *) mp);
205 0 : }
206 :
207 : static void
208 0 : vl_api_sw_interface_virtio_pci_dump_t_handler
209 : (vl_api_sw_interface_virtio_pci_dump_t * mp)
210 : {
211 0 : vpe_api_main_t *am = &vpe_api_main;
212 : vl_api_registration_t *reg;
213 0 : virtio_main_t *vmx = &virtio_main;
214 : virtio_if_t *vif;
215 :
216 0 : reg = vl_api_client_index_to_registration (mp->client_index);
217 0 : if (!reg)
218 0 : return;
219 :
220 0 : pool_foreach (vif, vmx->interfaces)
221 : {
222 0 : if (vif->type == VIRTIO_IF_TYPE_PCI)
223 : {
224 0 : virtio_pci_send_sw_interface_details (am, reg, vif, mp->context);
225 : }
226 : }
227 : }
228 :
229 : #include <vnet/devices/virtio/virtio.api.c>
230 :
231 : static clib_error_t *
232 559 : virtio_pci_api_hookup (vlib_main_t * vm)
233 : {
234 : /*
235 : * Set up the (msg_name, crc, message-id) table
236 : */
237 559 : REPLY_MSG_ID_BASE = setup_message_id_table ();
238 :
239 559 : return 0;
240 : }
241 :
242 15119 : VLIB_API_INIT_FUNCTION (virtio_pci_api_hookup);
243 :
244 : /*
245 : * fd.io coding-style-patch-verification: ON
246 : *
247 : * Local Variables:
248 : * eval: (c-set-style "gnu")
249 : * End:
250 : */
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