1 /* 2 * VMware vSockets Driver 3 * 4 * Copyright (C) 2009-2013 VMware, Inc. All rights reserved. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License as published by the Free 8 * Software Foundation version 2 and no later version. 9 * 10 * This program is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13 * more details. 14 */ 15 16 #ifndef __VMCI_TRANSPORT_NOTIFY_H__ 17 #define __VMCI_TRANSPORT_NOTIFY_H__ 18 19 #include <linux/types.h> 20 #include <linux/vmw_vmci_defs.h> 21 #include <linux/vmw_vmci_api.h> 22 #include <linux/vm_sockets.h> 23 24 #include "vmci_transport.h" 25 26 /* Comment this out to compare with old protocol. */ 27 #define VSOCK_OPTIMIZATION_WAITING_NOTIFY 1 28 #if defined(VSOCK_OPTIMIZATION_WAITING_NOTIFY) 29 /* Comment this out to remove flow control for "new" protocol */ 30 #define VSOCK_OPTIMIZATION_FLOW_CONTROL 1 31 #endif 32 33 #define VMCI_TRANSPORT_MAX_DGRAM_RESENDS 10 34 35 struct vmci_transport_recv_notify_data { 36 u64 consume_head; 37 u64 produce_tail; 38 bool notify_on_block; 39 }; 40 41 struct vmci_transport_send_notify_data { 42 u64 consume_head; 43 u64 produce_tail; 44 }; 45 46 /* Socket notification callbacks. */ 47 struct vmci_transport_notify_ops { 48 void (*socket_init) (struct sock *sk); 49 void (*socket_destruct) (struct vsock_sock *vsk); 50 int (*poll_in) (struct sock *sk, size_t target, 51 bool *data_ready_now); 52 int (*poll_out) (struct sock *sk, size_t target, 53 bool *space_avail_now); 54 void (*handle_notify_pkt) (struct sock *sk, 55 struct vmci_transport_packet *pkt, 56 bool bottom_half, struct sockaddr_vm *dst, 57 struct sockaddr_vm *src, 58 bool *pkt_processed); 59 int (*recv_init) (struct sock *sk, size_t target, 60 struct vmci_transport_recv_notify_data *data); 61 int (*recv_pre_block) (struct sock *sk, size_t target, 62 struct vmci_transport_recv_notify_data *data); 63 int (*recv_pre_dequeue) (struct sock *sk, size_t target, 64 struct vmci_transport_recv_notify_data *data); 65 int (*recv_post_dequeue) (struct sock *sk, size_t target, 66 ssize_t copied, bool data_read, 67 struct vmci_transport_recv_notify_data *data); 68 int (*send_init) (struct sock *sk, 69 struct vmci_transport_send_notify_data *data); 70 int (*send_pre_block) (struct sock *sk, 71 struct vmci_transport_send_notify_data *data); 72 int (*send_pre_enqueue) (struct sock *sk, 73 struct vmci_transport_send_notify_data *data); 74 int (*send_post_enqueue) (struct sock *sk, ssize_t written, 75 struct vmci_transport_send_notify_data *data); 76 void (*process_request) (struct sock *sk); 77 void (*process_negotiate) (struct sock *sk); 78 }; 79 80 extern const struct vmci_transport_notify_ops vmci_transport_notify_pkt_ops; 81 extern const 82 struct vmci_transport_notify_ops vmci_transport_notify_pkt_q_state_ops; 83 84 #endif /* __VMCI_TRANSPORT_NOTIFY_H__ */ 85