1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * VMware vSockets Driver 4 * 5 * Copyright (C) 2009-2013 VMware, Inc. All rights reserved. 6 */ 7 8 #ifndef __VMCI_TRANSPORT_NOTIFY_H__ 9 #define __VMCI_TRANSPORT_NOTIFY_H__ 10 11 #include <linux/types.h> 12 #include <linux/vmw_vmci_defs.h> 13 #include <linux/vmw_vmci_api.h> 14 15 #include "vmci_transport.h" 16 17 /* Comment this out to compare with old protocol. */ 18 #define VSOCK_OPTIMIZATION_WAITING_NOTIFY 1 19 #if defined(VSOCK_OPTIMIZATION_WAITING_NOTIFY) 20 /* Comment this out to remove flow control for "new" protocol */ 21 #define VSOCK_OPTIMIZATION_FLOW_CONTROL 1 22 #endif 23 24 #define VMCI_TRANSPORT_MAX_DGRAM_RESENDS 10 25 26 struct vmci_transport_recv_notify_data { 27 u64 consume_head; 28 u64 produce_tail; 29 bool notify_on_block; 30 }; 31 32 struct vmci_transport_send_notify_data { 33 u64 consume_head; 34 u64 produce_tail; 35 }; 36 37 /* Socket notification callbacks. */ 38 struct vmci_transport_notify_ops { 39 void (*socket_init) (struct sock *sk); 40 void (*socket_destruct) (struct vsock_sock *vsk); 41 int (*poll_in) (struct sock *sk, size_t target, 42 bool *data_ready_now); 43 int (*poll_out) (struct sock *sk, size_t target, 44 bool *space_avail_now); 45 void (*handle_notify_pkt) (struct sock *sk, 46 struct vmci_transport_packet *pkt, 47 bool bottom_half, struct sockaddr_vm *dst, 48 struct sockaddr_vm *src, 49 bool *pkt_processed); 50 int (*recv_init) (struct sock *sk, size_t target, 51 struct vmci_transport_recv_notify_data *data); 52 int (*recv_pre_block) (struct sock *sk, size_t target, 53 struct vmci_transport_recv_notify_data *data); 54 int (*recv_pre_dequeue) (struct sock *sk, size_t target, 55 struct vmci_transport_recv_notify_data *data); 56 int (*recv_post_dequeue) (struct sock *sk, size_t target, 57 ssize_t copied, bool data_read, 58 struct vmci_transport_recv_notify_data *data); 59 int (*send_init) (struct sock *sk, 60 struct vmci_transport_send_notify_data *data); 61 int (*send_pre_block) (struct sock *sk, 62 struct vmci_transport_send_notify_data *data); 63 int (*send_pre_enqueue) (struct sock *sk, 64 struct vmci_transport_send_notify_data *data); 65 int (*send_post_enqueue) (struct sock *sk, ssize_t written, 66 struct vmci_transport_send_notify_data *data); 67 void (*process_request) (struct sock *sk); 68 void (*process_negotiate) (struct sock *sk); 69 }; 70 71 extern const struct vmci_transport_notify_ops vmci_transport_notify_pkt_ops; 72 extern const 73 struct vmci_transport_notify_ops vmci_transport_notify_pkt_q_state_ops; 74 75 #endif /* __VMCI_TRANSPORT_NOTIFY_H__ */ 76