1d021c344SAndy King /* 2d021c344SAndy King * VMware vSockets Driver 3d021c344SAndy King * 4d021c344SAndy King * Copyright (C) 2013 VMware, Inc. All rights reserved. 5d021c344SAndy King * 6d021c344SAndy King * This program is free software; you can redistribute it and/or modify it 7d021c344SAndy King * under the terms of the GNU General Public License as published by the Free 8d021c344SAndy King * Software Foundation version 2 and no later version. 9d021c344SAndy King * 10d021c344SAndy King * This program is distributed in the hope that it will be useful, but WITHOUT 11d021c344SAndy King * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12d021c344SAndy King * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13d021c344SAndy King * more details. 14d021c344SAndy King */ 15d021c344SAndy King 16d021c344SAndy King #ifndef _VMCI_TRANSPORT_H_ 17d021c344SAndy King #define _VMCI_TRANSPORT_H_ 18d021c344SAndy King 19d021c344SAndy King #include <linux/vmw_vmci_defs.h> 20d021c344SAndy King #include <linux/vmw_vmci_api.h> 21d021c344SAndy King 2282a54d0eSAsias He #include <net/vsock_addr.h> 2382a54d0eSAsias He #include <net/af_vsock.h> 24d021c344SAndy King 25d021c344SAndy King /* If the packet format changes in a release then this should change too. */ 26d021c344SAndy King #define VMCI_TRANSPORT_PACKET_VERSION 1 27d021c344SAndy King 28d021c344SAndy King /* The resource ID on which control packets are sent. */ 29d021c344SAndy King #define VMCI_TRANSPORT_PACKET_RID 1 30d021c344SAndy King 312a89f924SReilly Grant /* The resource ID on which control packets are sent to the hypervisor. */ 322a89f924SReilly Grant #define VMCI_TRANSPORT_HYPERVISOR_PACKET_RID 15 332a89f924SReilly Grant 34d021c344SAndy King #define VSOCK_PROTO_INVALID 0 35d021c344SAndy King #define VSOCK_PROTO_PKT_ON_NOTIFY (1 << 0) 36d021c344SAndy King #define VSOCK_PROTO_ALL_SUPPORTED (VSOCK_PROTO_PKT_ON_NOTIFY) 37d021c344SAndy King 38d021c344SAndy King #define vmci_trans(_vsk) ((struct vmci_transport *)((_vsk)->trans)) 39d021c344SAndy King 40d021c344SAndy King enum vmci_transport_packet_type { 41d021c344SAndy King VMCI_TRANSPORT_PACKET_TYPE_INVALID = 0, 42d021c344SAndy King VMCI_TRANSPORT_PACKET_TYPE_REQUEST, 43d021c344SAndy King VMCI_TRANSPORT_PACKET_TYPE_NEGOTIATE, 44d021c344SAndy King VMCI_TRANSPORT_PACKET_TYPE_OFFER, 45d021c344SAndy King VMCI_TRANSPORT_PACKET_TYPE_ATTACH, 46d021c344SAndy King VMCI_TRANSPORT_PACKET_TYPE_WROTE, 47d021c344SAndy King VMCI_TRANSPORT_PACKET_TYPE_READ, 48d021c344SAndy King VMCI_TRANSPORT_PACKET_TYPE_RST, 49d021c344SAndy King VMCI_TRANSPORT_PACKET_TYPE_SHUTDOWN, 50d021c344SAndy King VMCI_TRANSPORT_PACKET_TYPE_WAITING_WRITE, 51d021c344SAndy King VMCI_TRANSPORT_PACKET_TYPE_WAITING_READ, 52d021c344SAndy King VMCI_TRANSPORT_PACKET_TYPE_REQUEST2, 53d021c344SAndy King VMCI_TRANSPORT_PACKET_TYPE_NEGOTIATE2, 54d021c344SAndy King VMCI_TRANSPORT_PACKET_TYPE_MAX 55d021c344SAndy King }; 56d021c344SAndy King 57d021c344SAndy King struct vmci_transport_waiting_info { 58d021c344SAndy King u64 generation; 59d021c344SAndy King u64 offset; 60d021c344SAndy King }; 61d021c344SAndy King 62d021c344SAndy King /* Control packet type for STREAM sockets. DGRAMs have no control packets nor 63d021c344SAndy King * special packet header for data packets, they are just raw VMCI DGRAM 64d021c344SAndy King * messages. For STREAMs, control packets are sent over the control channel 65d021c344SAndy King * while data is written and read directly from queue pairs with no packet 66d021c344SAndy King * format. 67d021c344SAndy King */ 68d021c344SAndy King struct vmci_transport_packet { 69d021c344SAndy King struct vmci_datagram dg; 70d021c344SAndy King u8 version; 71d021c344SAndy King u8 type; 72d021c344SAndy King u16 proto; 73d021c344SAndy King u32 src_port; 74d021c344SAndy King u32 dst_port; 75d021c344SAndy King u32 _reserved2; 76d021c344SAndy King union { 77d021c344SAndy King u64 size; 78d021c344SAndy King u64 mode; 79d021c344SAndy King struct vmci_handle handle; 80d021c344SAndy King struct vmci_transport_waiting_info wait; 81d021c344SAndy King } u; 82d021c344SAndy King }; 83d021c344SAndy King 84d021c344SAndy King struct vmci_transport_notify_pkt { 85d021c344SAndy King u64 write_notify_window; 86d021c344SAndy King u64 write_notify_min_window; 87d021c344SAndy King bool peer_waiting_read; 88d021c344SAndy King bool peer_waiting_write; 89d021c344SAndy King bool peer_waiting_write_detected; 90d021c344SAndy King bool sent_waiting_read; 91d021c344SAndy King bool sent_waiting_write; 92d021c344SAndy King struct vmci_transport_waiting_info peer_waiting_read_info; 93d021c344SAndy King struct vmci_transport_waiting_info peer_waiting_write_info; 94d021c344SAndy King u64 produce_q_generation; 95d021c344SAndy King u64 consume_q_generation; 96d021c344SAndy King }; 97d021c344SAndy King 98d021c344SAndy King struct vmci_transport_notify_pkt_q_state { 99d021c344SAndy King u64 write_notify_window; 100d021c344SAndy King u64 write_notify_min_window; 101d021c344SAndy King bool peer_waiting_write; 102d021c344SAndy King bool peer_waiting_write_detected; 103d021c344SAndy King }; 104d021c344SAndy King 105d021c344SAndy King union vmci_transport_notify { 106d021c344SAndy King struct vmci_transport_notify_pkt pkt; 107d021c344SAndy King struct vmci_transport_notify_pkt_q_state pkt_q_state; 108d021c344SAndy King }; 109d021c344SAndy King 110d021c344SAndy King /* Our transport-specific data. */ 111d021c344SAndy King struct vmci_transport { 112d021c344SAndy King /* For DGRAMs. */ 113d021c344SAndy King struct vmci_handle dg_handle; 114d021c344SAndy King /* For STREAMs. */ 115d021c344SAndy King struct vmci_handle qp_handle; 116d021c344SAndy King struct vmci_qp *qpair; 117d021c344SAndy King u64 produce_size; 118d021c344SAndy King u64 consume_size; 119d021c344SAndy King u64 queue_pair_size; 120d021c344SAndy King u64 queue_pair_min_size; 121d021c344SAndy King u64 queue_pair_max_size; 122d021c344SAndy King u32 attach_sub_id; 123d021c344SAndy King u32 detach_sub_id; 124d021c344SAndy King union vmci_transport_notify notify; 125d021c344SAndy King struct vmci_transport_notify_ops *notify_ops; 126d021c344SAndy King }; 127d021c344SAndy King 128d021c344SAndy King int vmci_transport_register(void); 129d021c344SAndy King void vmci_transport_unregister(void); 130d021c344SAndy King 131d021c344SAndy King int vmci_transport_send_wrote_bh(struct sockaddr_vm *dst, 132d021c344SAndy King struct sockaddr_vm *src); 133d021c344SAndy King int vmci_transport_send_read_bh(struct sockaddr_vm *dst, 134d021c344SAndy King struct sockaddr_vm *src); 135d021c344SAndy King int vmci_transport_send_wrote(struct sock *sk); 136d021c344SAndy King int vmci_transport_send_read(struct sock *sk); 137d021c344SAndy King int vmci_transport_send_waiting_write(struct sock *sk, 138d021c344SAndy King struct vmci_transport_waiting_info *wait); 139d021c344SAndy King int vmci_transport_send_waiting_read(struct sock *sk, 140d021c344SAndy King struct vmci_transport_waiting_info *wait); 141d021c344SAndy King 142d021c344SAndy King #endif 143