| /* |
| *------------------------------------------------------------------ |
| * 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/ip/ip.h> |
| #include <vnet/devices/virtio/virtio.h> |
| #include <vnet/devices/virtio/pci.h> |
| #include <vlib/pci/pci_types_api.h> |
| |
| #include <vnet/vnet_msg_enum.h> |
| |
| #define vl_typedefs /* define message structures */ |
| #include <vnet/vnet_all_api_h.h> |
| #undef vl_typedefs |
| |
| #define vl_endianfun /* define message structures */ |
| #include <vnet/vnet_all_api_h.h> |
| #undef vl_endianfun |
| |
| /* instantiate all the print functions we know about */ |
| #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) |
| #define vl_printfun |
| #include <vnet/vnet_all_api_h.h> |
| #undef vl_printfun |
| |
| #include <vlibapi/api_helper_macros.h> |
| |
| #define foreach_virtio_pci_api_msg \ |
| _(VIRTIO_PCI_CREATE, virtio_pci_create) \ |
| _(VIRTIO_PCI_CREATE_V2, virtio_pci_create_v2) \ |
| _(VIRTIO_PCI_DELETE, virtio_pci_delete) \ |
| _(SW_INTERFACE_VIRTIO_PCI_DUMP, sw_interface_virtio_pci_dump) |
| |
| /* 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 (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"); |
| |
| 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; |
| else |
| ap->gso_enabled = 0; |
| if (ap->virtio_flags & VIRTIO_API_FLAG_CSUM_OFFLOAD) |
| ap->checksum_offload_enabled = 1; |
| else |
| ap->checksum_offload_enabled = 0; |
| |
| 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 (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 (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 (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); |
| virtio_vring_t *vring = vec_elt_at_index (vif->rxq_vrings, 0); |
| mp->rx_ring_sz = htons (vring->size); |
| vring = vec_elt_at_index (vif->txq_vrings, 0); |
| mp->tx_ring_sz = htons (vring->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);} |
| } |
| )); |
| } |
| |
| #define vl_msg_name_crc_list |
| #include <vnet/vnet_all_api_h.h> |
| #undef vl_msg_name_crc_list |
| |
| static void |
| setup_message_id_table (api_main_t * am) |
| { |
| #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id); |
| foreach_vl_msg_name_crc_virtio; |
| #undef _ |
| } |
| |
| static clib_error_t * |
| virtio_pci_api_hookup (vlib_main_t * vm) |
| { |
| api_main_t *am = vlibapi_get_main (); |
| |
| #define _(N,n) \ |
| vl_msg_api_set_handlers(VL_API_##N, #n, \ |
| vl_api_##n##_t_handler, \ |
| vl_noop_handler, \ |
| vl_api_##n##_t_endian, \ |
| vl_api_##n##_t_print, \ |
| sizeof(vl_api_##n##_t), 1); |
| foreach_virtio_pci_api_msg; |
| #undef _ |
| |
| /* |
| * Set up the (msg_name, crc, message-id) table |
| */ |
| setup_message_id_table (am); |
| |
| 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: |
| */ |