| /* |
| *------------------------------------------------------------------ |
| * Copyright (c) 2017 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. |
| *------------------------------------------------------------------ |
| */ |
| |
| #ifndef _VNET_DEVICES_VIRTIO_VIRTIO_H_ |
| #define _VNET_DEVICES_VIRTIO_VIRTIO_H_ |
| |
| #define foreach_virtio_net_features \ |
| _ (VIRTIO_NET_F_CSUM, 0) /* Host handles pkts w/ partial csum */ \ |
| _ (VIRTIO_NET_F_GUEST_CSUM, 1) /* Guest handles pkts w/ partial csum */ \ |
| _ (VIRTIO_NET_F_CTRL_GUEST_OFFLOADS, 2) /* Dynamic offload configuration. */ \ |
| _ (VIRTIO_NET_F_MTU, 3) /* Initial MTU advice. */ \ |
| _ (VIRTIO_NET_F_MAC, 5) /* Host has given MAC address. */ \ |
| _ (VIRTIO_NET_F_GSO, 6) /* Host handles pkts w/ any GSO. */ \ |
| _ (VIRTIO_NET_F_GUEST_TSO4, 7) /* Guest can handle TSOv4 in. */ \ |
| _ (VIRTIO_NET_F_GUEST_TSO6, 8) /* Guest can handle TSOv6 in. */ \ |
| _ (VIRTIO_NET_F_GUEST_ECN, 9) /* Guest can handle TSO[6] w/ ECN in. */ \ |
| _ (VIRTIO_NET_F_GUEST_UFO, 10) /* Guest can handle UFO in. */ \ |
| _ (VIRTIO_NET_F_HOST_TSO4, 11) /* Host can handle TSOv4 in. */ \ |
| _ (VIRTIO_NET_F_HOST_TSO6, 12) /* Host can handle TSOv6 in. */ \ |
| _ (VIRTIO_NET_F_HOST_ECN, 13) /* Host can handle TSO[6] w/ ECN in. */ \ |
| _ (VIRTIO_NET_F_HOST_UFO, 14) /* Host can handle UFO in. */ \ |
| _ (VIRTIO_NET_F_MRG_RXBUF, 15) /* Host can merge receive buffers. */ \ |
| _ (VIRTIO_NET_F_STATUS, 16) /* virtio_net_config.status available */ \ |
| _ (VIRTIO_NET_F_CTRL_VQ, 17) /* Control channel available */ \ |
| _ (VIRTIO_NET_F_CTRL_RX, 18) /* Control channel RX mode support */ \ |
| _ (VIRTIO_NET_F_CTRL_VLAN, 19) /* Control channel VLAN filtering */ \ |
| _ (VIRTIO_NET_F_CTRL_RX_EXTRA, 20) /* Extra RX mode control support */ \ |
| _ (VIRTIO_NET_F_GUEST_ANNOUNCE, 21) /* Guest can announce device on the network */ \ |
| _ (VIRTIO_NET_F_MQ, 22) /* Device supports Receive Flow Steering */ \ |
| _ (VIRTIO_NET_F_CTRL_MAC_ADDR, 23) /* Set MAC address */ \ |
| _ (VIRTIO_F_NOTIFY_ON_EMPTY, 24) \ |
| _ (VHOST_F_LOG_ALL, 26) /* Log all write descriptors */ \ |
| _ (VIRTIO_F_ANY_LAYOUT, 27) /* Can the device handle any descripor layout */ \ |
| _ (VIRTIO_RING_F_INDIRECT_DESC, 28) /* Support indirect buffer descriptors */ \ |
| _ (VIRTIO_RING_F_EVENT_IDX, 29) /* The Guest publishes the used index for which it expects an interrupt \ |
| * at the end of the avail ring. Host should ignore the avail->flags field. */ \ |
| /* The Host publishes the avail index for which it expects a kick \ |
| * at the end of the used ring. Guest should ignore the used->flags field. */ \ |
| _ (VHOST_USER_F_PROTOCOL_FEATURES, 30) \ |
| _ (VIRTIO_F_VERSION_1, 32) |
| |
| #define foreach_virtio_if_flag \ |
| _(0, ADMIN_UP, "admin-up") \ |
| _(1, DELETING, "deleting") |
| |
| typedef enum |
| { |
| #define _(a, b, c) VIRTIO_IF_FLAG_##b = (1 << a), |
| foreach_virtio_if_flag |
| #undef _ |
| } virtio_if_flag_t; |
| |
| typedef enum |
| { |
| VIRTIO_IF_TYPE_TAP, |
| VIRTIO_IF_N_TYPES, |
| } virtio_if_type_t; |
| |
| |
| typedef struct |
| { |
| struct vring_desc *desc; |
| struct vring_used *used; |
| struct vring_avail *avail; |
| u16 desc_in_use; |
| u16 desc_next; |
| int kick_fd; |
| int call_fd; |
| u16 size; |
| #define VIRTIO_RING_FLAG_MASK_INT 1 |
| u32 flags; |
| u32 call_file_index; |
| u32 *buffers; |
| u16 last_used_idx; |
| } virtio_vring_t; |
| |
| typedef struct |
| { |
| u32 flags; |
| u32 id; |
| u32 dev_instance; |
| u32 hw_if_index; |
| u32 sw_if_index; |
| u32 per_interface_next_index; |
| int fd; |
| int tap_fd; |
| virtio_vring_t *vrings; |
| |
| u64 features, remote_features; |
| |
| virtio_if_type_t type; |
| u16 tx_ring_sz; |
| u16 rx_ring_sz; |
| u8 *host_if_name; |
| u8 *net_ns; |
| u8 *host_bridge; |
| u8 host_mac_addr[6]; |
| ip4_address_t host_ip4_addr; |
| u8 host_ip4_prefix_len; |
| ip6_address_t host_ip6_addr; |
| u8 host_ip6_prefix_len; |
| |
| int ifindex; |
| } virtio_if_t; |
| |
| typedef struct |
| { |
| virtio_if_t *interfaces; |
| } virtio_main_t; |
| |
| extern virtio_main_t virtio_main; |
| extern vnet_device_class_t virtio_device_class; |
| extern vlib_node_registration_t virtio_input_node; |
| |
| clib_error_t *virtio_vring_init (vlib_main_t * vm, virtio_if_t * vif, u16 idx, |
| u16 sz); |
| clib_error_t *virtio_vring_free (vlib_main_t * vm, virtio_if_t * vif, |
| u32 idx); |
| extern void virtio_free_used_desc (vlib_main_t * vm, virtio_vring_t * vring); |
| |
| #endif /* _VNET_DEVICES_VIRTIO_VIRTIO_H_ */ |
| |
| /* |
| * fd.io coding-style-patch-verification: ON |
| * |
| * Local Variables: |
| * eval: (c-set-style "gnu") |
| * End: |
| */ |