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/* Copyright (c) 2011-2016, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _IPC_ROUTER_PRIVATE_H
#define _IPC_ROUTER_PRIVATE_H
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/errno.h>
#include <linux/mm.h>
#include <linux/list.h>
#include <linux/platform_device.h>
#include <linux/msm_ipc.h>
#include <linux/ipc_router.h>
#include <linux/ipc_router_xprt.h>
#include <net/sock.h>
/* definitions for the R2R wire protocol */
#define IPC_ROUTER_V1 1
/* Ambiguous definition but will enable multiplexing IPC_ROUTER_V2 packets
* with an existing alternate transport in user-space, if needed.
*/
#define IPC_ROUTER_V2 3
#define IPC_ROUTER_VER_BITMASK ((BIT(IPC_ROUTER_V1)) | (BIT(IPC_ROUTER_V2)))
#define IPC_ROUTER_HELLO_MAGIC 0xE110
#define IPC_ROUTER_CHECKSUM_MASK 0xFFFF
#define IPC_ROUTER_ADDRESS 0x0000FFFF
#define IPC_ROUTER_NID_LOCAL 1
#define MAX_IPC_PKT_SIZE 66000
#define IPC_ROUTER_LOW_RX_QUOTA 5
#define IPC_ROUTER_HIGH_RX_QUOTA 10
#define IPC_ROUTER_INFINITY -1
#define DEFAULT_RCV_TIMEO IPC_ROUTER_INFINITY
#define DEFAULT_SND_TIMEO IPC_ROUTER_INFINITY
#define ALIGN_SIZE(x) ((4 - ((x) & 3)) & 3)
#define ALL_SERVICE 0xFFFFFFFF
#define ALL_INSTANCE 0xFFFFFFFF
#define CONTROL_FLAG_CONFIRM_RX 0x1
#define CONTROL_FLAG_OPT_HDR 0x2
enum {
CLIENT_PORT,
SERVER_PORT,
CONTROL_PORT,
IRSC_PORT,
};
enum {
NULL_MODE,
SINGLE_LINK_MODE,
MULTI_LINK_MODE,
};
enum {
CONNECTION_RESET = -1,
NOT_CONNECTED,
CONNECTED,
};
struct msm_ipc_sock {
struct sock sk;
struct msm_ipc_port *port;
void *default_node_vote_info;
};
/**
* msm_ipc_router_create_raw_port() - Create an IPC Router port
* @endpoint: User-space space socket information to be cached.
* @notify: Function to notify incoming events on the port.
* @event: Event ID to be handled.
* @oob_data: Any out-of-band data associated with the event.
* @oob_data_len: Size of the out-of-band data, if valid.
* @priv: Private data registered during the port creation.
* @priv: Private Data to be passed during the event notification.
*
* @return: Valid pointer to port on success, NULL on failure.
*
* This function is used to create an IPC Router port. The port is used for
* communication locally or outside the subsystem.
*/
struct msm_ipc_port *
msm_ipc_router_create_raw_port(void *endpoint,
void (*notify)(unsigned int event,
void *oob_data,
size_t oob_data_len, void *priv),
void *priv);
int msm_ipc_router_send_to(struct msm_ipc_port *src,
struct sk_buff_head *data,
struct msm_ipc_addr *dest,
long timeout);
int msm_ipc_router_read(struct msm_ipc_port *port_ptr,
struct rr_packet **pkt,
size_t buf_len);
int msm_ipc_router_recv_from(struct msm_ipc_port *port_ptr,
struct rr_packet **pkt,
struct msm_ipc_addr *src_addr, long timeout);
int msm_ipc_router_register_server(struct msm_ipc_port *server_port,
struct msm_ipc_addr *name);
int msm_ipc_router_unregister_server(struct msm_ipc_port *server_port);
int msm_ipc_router_init_sockets(void);
void msm_ipc_router_exit_sockets(void);
void msm_ipc_sync_sec_rule(u32 service, u32 instance, void *rule);
void msm_ipc_sync_default_sec_rule(void *rule);
int msm_ipc_router_rx_data_wait(struct msm_ipc_port *port_ptr, long timeout);
void msm_ipc_router_free_skb(struct sk_buff_head *skb_head);
/**
* ipc_router_set_conn() - Set the connection by initializing dest address
* @port_ptr: Local port in which the connection has to be set.
* @addr: Destination address of the connection.
*
* @return: 0 on success, standard Linux error codes on failure.
*/
int ipc_router_set_conn(struct msm_ipc_port *port_ptr,
struct msm_ipc_addr *addr);
void *msm_ipc_load_default_node(void);
void msm_ipc_unload_default_node(void *pil);
/**
* ipc_router_dummy_write_space() - Dummy write space available callback
* @sk: Socket pointer for which the callback is called.
*/
void ipc_router_dummy_write_space(struct sock *sk);
#endif