diff options
Diffstat (limited to 'src/vnet/devices/virtio/virtio_api.c')
| -rw-r--r-- | src/vnet/devices/virtio/virtio_api.c | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/src/vnet/devices/virtio/virtio_api.c b/src/vnet/devices/virtio/virtio_api.c new file mode 100644 index 00000000000..6f70b090034 --- /dev/null +++ b/src/vnet/devices/virtio/virtio_api.c @@ -0,0 +1,237 @@ +/* + *------------------------------------------------------------------ + * 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 <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_DELETE, virtio_pci_delete) \ +_(SW_INTERFACE_VIRTIO_PCI_DUMP, sw_interface_virtio_pci_dump) + +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)); + + ap->addr = ntohl (mp->pci_addr); + if (!mp->use_random_mac) + { + clib_memcpy (ap->mac_addr, mp->mac_address, 6); + ap->mac_addr_set = 1; + } + ap->rxq_size = ntohs (mp->rx_ring_sz); + ap->txq_size = ntohs (mp->tx_ring_sz); + ap->sw_if_index = (u32) ~ 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 +virtio_pci_send_sw_interface_event_deleted (vpe_api_main_t * am, + vl_api_registration_t * reg, + u32 sw_if_index) +{ + vl_api_sw_interface_event_t *mp; + + mp = vl_msg_api_alloc (sizeof (*mp)); + clib_memset (mp, 0, sizeof (*mp)); + mp->_vl_msg_id = htons (VL_API_SW_INTERFACE_EVENT); + mp->sw_if_index = htonl (sw_if_index); + + mp->admin_up_down = 0; + mp->link_up_down = 0; + mp->deleted = 1; + vl_api_send_msg (reg, (u8 *) mp); +} + +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 *vmx = &virtio_main; + int rv = 0; + vnet_hw_interface_t *hw; + virtio_if_t *vif; + vpe_api_main_t *vam = &vpe_api_main; + vl_api_virtio_pci_delete_reply_t *rmp; + vl_api_registration_t *reg; + u32 sw_if_index = ntohl (mp->sw_if_index); + + hw = vnet_get_sup_hw_interface (vnm, htonl (mp->sw_if_index)); + if (hw == NULL || virtio_device_class.index != hw->dev_class_index) + { + rv = VNET_API_ERROR_INVALID_INTERFACE; + goto reply; + } + + vif = pool_elt_at_index (vmx->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); + + if (!rv) + { + virtio_pci_send_sw_interface_event_deleted (vam, reg, sw_if_index); + } +} + +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); + mp->pci_addr = htonl (vif->pci_addr.as_u32); + mp->sw_if_index = htonl (vif->sw_if_index); + mp->rx_ring_sz = htons (vif->rx_ring_sz); + mp->tx_ring_sz = htons (vif->tx_ring_sz); + 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 = &api_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: + */ |