Arun Kumar Neelakantam | 3a65540 | 2018-06-11 18:18:51 +0530 | [diff] [blame] | 1 | /* Copyright (c) 2011-2016, 2018, The Linux Foundation. All rights reserved. |
Karthikeyan Ramasubramanian | 6a116d6 | 2016-09-16 16:05:32 -0600 | [diff] [blame] | 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | */ |
| 12 | |
| 13 | #ifndef _IPC_ROUTER_PRIVATE_H |
| 14 | #define _IPC_ROUTER_PRIVATE_H |
| 15 | |
| 16 | #include <linux/types.h> |
| 17 | #include <linux/socket.h> |
| 18 | #include <linux/errno.h> |
| 19 | #include <linux/mm.h> |
| 20 | #include <linux/list.h> |
| 21 | #include <linux/platform_device.h> |
| 22 | #include <linux/msm_ipc.h> |
| 23 | #include <linux/ipc_router.h> |
| 24 | #include <linux/ipc_router_xprt.h> |
| 25 | |
| 26 | #include <net/sock.h> |
| 27 | |
| 28 | /* definitions for the R2R wire protocol */ |
| 29 | #define IPC_ROUTER_V1 1 |
| 30 | /* Ambiguous definition but will enable multiplexing IPC_ROUTER_V2 packets |
| 31 | * with an existing alternate transport in user-space, if needed. |
| 32 | */ |
| 33 | #define IPC_ROUTER_V2 3 |
| 34 | #define IPC_ROUTER_VER_BITMASK ((BIT(IPC_ROUTER_V1)) | (BIT(IPC_ROUTER_V2))) |
| 35 | #define IPC_ROUTER_HELLO_MAGIC 0xE110 |
| 36 | #define IPC_ROUTER_CHECKSUM_MASK 0xFFFF |
| 37 | |
| 38 | #define IPC_ROUTER_ADDRESS 0x0000FFFF |
| 39 | |
Arun Kumar Neelakantam | 3a65540 | 2018-06-11 18:18:51 +0530 | [diff] [blame] | 40 | #define IPC_ROUTER_NID_LOCAL CONFIG_IPC_ROUTER_NODE_ID |
Karthikeyan Ramasubramanian | 6a116d6 | 2016-09-16 16:05:32 -0600 | [diff] [blame] | 41 | #define MAX_IPC_PKT_SIZE 66000 |
| 42 | |
| 43 | #define IPC_ROUTER_LOW_RX_QUOTA 5 |
| 44 | #define IPC_ROUTER_HIGH_RX_QUOTA 10 |
| 45 | |
| 46 | #define IPC_ROUTER_INFINITY -1 |
| 47 | #define DEFAULT_RCV_TIMEO IPC_ROUTER_INFINITY |
| 48 | #define DEFAULT_SND_TIMEO IPC_ROUTER_INFINITY |
| 49 | |
| 50 | #define ALIGN_SIZE(x) ((4 - ((x) & 3)) & 3) |
| 51 | |
| 52 | #define ALL_SERVICE 0xFFFFFFFF |
| 53 | #define ALL_INSTANCE 0xFFFFFFFF |
| 54 | |
| 55 | #define CONTROL_FLAG_CONFIRM_RX 0x1 |
| 56 | #define CONTROL_FLAG_OPT_HDR 0x2 |
| 57 | |
| 58 | enum { |
| 59 | CLIENT_PORT, |
| 60 | SERVER_PORT, |
| 61 | CONTROL_PORT, |
| 62 | IRSC_PORT, |
| 63 | }; |
| 64 | |
| 65 | enum { |
| 66 | NULL_MODE, |
| 67 | SINGLE_LINK_MODE, |
| 68 | MULTI_LINK_MODE, |
| 69 | }; |
| 70 | |
| 71 | enum { |
| 72 | CONNECTION_RESET = -1, |
| 73 | NOT_CONNECTED, |
| 74 | CONNECTED, |
| 75 | }; |
| 76 | |
| 77 | struct msm_ipc_sock { |
| 78 | struct sock sk; |
| 79 | struct msm_ipc_port *port; |
| 80 | void *default_node_vote_info; |
| 81 | }; |
| 82 | |
| 83 | /** |
| 84 | * msm_ipc_router_create_raw_port() - Create an IPC Router port |
| 85 | * @endpoint: User-space space socket information to be cached. |
| 86 | * @notify: Function to notify incoming events on the port. |
| 87 | * @event: Event ID to be handled. |
| 88 | * @oob_data: Any out-of-band data associated with the event. |
| 89 | * @oob_data_len: Size of the out-of-band data, if valid. |
| 90 | * @priv: Private data registered during the port creation. |
| 91 | * @priv: Private Data to be passed during the event notification. |
| 92 | * |
| 93 | * @return: Valid pointer to port on success, NULL on failure. |
| 94 | * |
| 95 | * This function is used to create an IPC Router port. The port is used for |
| 96 | * communication locally or outside the subsystem. |
| 97 | */ |
| 98 | struct msm_ipc_port * |
| 99 | msm_ipc_router_create_raw_port(void *endpoint, |
| 100 | void (*notify)(unsigned int event, |
| 101 | void *oob_data, |
| 102 | size_t oob_data_len, void *priv), |
| 103 | void *priv); |
| 104 | int msm_ipc_router_send_to(struct msm_ipc_port *src, |
| 105 | struct sk_buff_head *data, |
| 106 | struct msm_ipc_addr *dest, |
| 107 | long timeout); |
| 108 | int msm_ipc_router_read(struct msm_ipc_port *port_ptr, |
| 109 | struct rr_packet **pkt, |
| 110 | size_t buf_len); |
| 111 | |
| 112 | int msm_ipc_router_recv_from(struct msm_ipc_port *port_ptr, |
| 113 | struct rr_packet **pkt, |
| 114 | struct msm_ipc_addr *src_addr, long timeout); |
| 115 | int msm_ipc_router_register_server(struct msm_ipc_port *server_port, |
| 116 | struct msm_ipc_addr *name); |
| 117 | int msm_ipc_router_unregister_server(struct msm_ipc_port *server_port); |
| 118 | |
| 119 | int msm_ipc_router_init_sockets(void); |
| 120 | void msm_ipc_router_exit_sockets(void); |
| 121 | |
| 122 | void msm_ipc_sync_sec_rule(u32 service, u32 instance, void *rule); |
| 123 | |
| 124 | void msm_ipc_sync_default_sec_rule(void *rule); |
| 125 | |
| 126 | int msm_ipc_router_rx_data_wait(struct msm_ipc_port *port_ptr, long timeout); |
| 127 | |
| 128 | void msm_ipc_router_free_skb(struct sk_buff_head *skb_head); |
| 129 | |
| 130 | /** |
| 131 | * ipc_router_set_conn() - Set the connection by initializing dest address |
| 132 | * @port_ptr: Local port in which the connection has to be set. |
| 133 | * @addr: Destination address of the connection. |
| 134 | * |
| 135 | * @return: 0 on success, standard Linux error codes on failure. |
| 136 | */ |
| 137 | int ipc_router_set_conn(struct msm_ipc_port *port_ptr, |
| 138 | struct msm_ipc_addr *addr); |
| 139 | |
| 140 | void *msm_ipc_load_default_node(void); |
| 141 | |
| 142 | void msm_ipc_unload_default_node(void *pil); |
| 143 | |
| 144 | /** |
| 145 | * ipc_router_dummy_write_space() - Dummy write space available callback |
| 146 | * @sk: Socket pointer for which the callback is called. |
| 147 | */ |
| 148 | void ipc_router_dummy_write_space(struct sock *sk); |
| 149 | |
| 150 | #endif |