1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
/* SPDX-License-Identifier: GPL-2.0-only
*
* Copyright (C) 2020-21 Intel Corporation.
*/
#ifndef IOSM_IPC_MUX_CODEC_H
#define IOSM_IPC_MUX_CODEC_H
#include "iosm_ipc_mux.h"
/* Queue level size and reporting
* >1 is enable, 0 is disable
*/
#define MUX_QUEUE_LEVEL 1
/* Size of the buffer for the IP MUX commands. */
#define MUX_MAX_UL_ACB_BUF_SIZE 256
/* Maximum number of packets in a go per session */
#define MUX_MAX_UL_DG_ENTRIES 100
/* ADGH: Signature of the Datagram Header. */
#define MUX_SIG_ADGH 0x48474441
/* CMDH: Signature of the Command Header. */
#define MUX_SIG_CMDH 0x48444D43
/* QLTH: Signature of the Queue Level Table */
#define MUX_SIG_QLTH 0x48544C51
/* FCTH: Signature of the Flow Credit Table */
#define MUX_SIG_FCTH 0x48544346
/* MUX UL session threshold factor */
#define IPC_MEM_MUX_UL_SESS_FCOFF_THRESHOLD_FACTOR (4)
/* Size of the buffer for the IP MUX Lite data buffer. */
#define IPC_MEM_MAX_DL_MUX_LITE_BUF_SIZE (2 * 1024)
/* MUX UL session threshold in number of packets */
#define IPC_MEM_MUX_UL_SESS_FCON_THRESHOLD (64)
/* Default time out for sending IPC session commands like
* open session, close session etc
* unit : milliseconds
*/
#define IPC_MUX_CMD_RUN_DEFAULT_TIMEOUT 1000 /* 1 second */
/* MUX UL flow control lower threshold in bytes */
#define IPC_MEM_MUX_UL_FLOWCTRL_LOW_B 10240 /* 10KB */
/* MUX UL flow control higher threshold in bytes (5ms worth of data)*/
#define IPC_MEM_MUX_UL_FLOWCTRL_HIGH_B (110 * 1024)
/**
* struct mux_adgh - Aggregated Datagram Header.
* @signature: Signature of the Aggregated Datagram Header(0x48474441)
* @length: Length (in bytes) of the datagram header. This length
* shall include the header size. Min value: 0x10
* @if_id: ID of the interface the datagrams belong to
* @opt_ipv4v6: Indicates IPv4(=0)/IPv6(=1), It is optional if not
* used set it to zero.
* @reserved: Reserved bits. Set to zero.
* @service_class: Service class identifier for the datagram.
* @next_count: Count of the datagrams that shall be following this
* datagrams for this interface. A count of zero means
* the next datagram may not belong to this interface.
* @reserved1: Reserved bytes, Set to zero
*/
struct mux_adgh {
__le32 signature;
__le16 length;
u8 if_id;
u8 opt_ipv4v6;
u8 service_class;
u8 next_count;
u8 reserved1[6];
};
/**
* struct mux_lite_cmdh - MUX Lite Command Header
* @signature: Signature of the Command Header(0x48444D43)
* @cmd_len: Length (in bytes) of the command. This length shall
* include the header size. Minimum value: 0x10
* @if_id: ID of the interface the commands in the table belong to.
* @reserved: Reserved Set to zero.
* @command_type: Command Enum.
* @transaction_id: 4 byte value shall be generated and sent along with a
* command Responses and ACKs shall have the same
* Transaction ID as their commands. It shall be unique to
* the command transaction on the given interface.
* @param: Optional parameters used with the command.
*/
struct mux_lite_cmdh {
__le32 signature;
__le16 cmd_len;
u8 if_id;
u8 reserved;
__le32 command_type;
__le32 transaction_id;
union mux_cmd_param param;
};
/**
* struct mux_lite_vfl - value field in generic table
* @nr_of_bytes: Number of bytes available to transmit in the queue.
*/
struct mux_lite_vfl {
__le32 nr_of_bytes;
};
/**
* struct ipc_mem_lite_gen_tbl - Generic table format for Queue Level
* and Flow Credit
* @signature: Signature of the table
* @length: Length of the table
* @if_id: ID of the interface the table belongs to
* @vfl_length: Value field length
* @reserved: Reserved
* @vfl: Value field of variable length
*/
struct ipc_mem_lite_gen_tbl {
__le32 signature;
__le16 length;
u8 if_id;
u8 vfl_length;
u32 reserved[2];
struct mux_lite_vfl vfl;
};
/**
* ipc_mux_dl_decode -Route the DL packet through the IP MUX layer
* depending on Header.
* @ipc_mux: Pointer to MUX data-struct
* @skb: Pointer to ipc_skb.
*/
void ipc_mux_dl_decode(struct iosm_mux *ipc_mux, struct sk_buff *skb);
/**
* ipc_mux_dl_acb_send_cmds - Respond to the Command blocks.
* @ipc_mux: Pointer to MUX data-struct
* @cmd_type: Command
* @if_id: Session interface id.
* @transaction_id: Command transaction id.
* @param: Pointer to command params.
* @res_size: Response size
* @blocking: True for blocking send
* @respond: If true return transaction ID
*
* Returns: 0 in success and failure value on error
*/
int ipc_mux_dl_acb_send_cmds(struct iosm_mux *ipc_mux, u32 cmd_type, u8 if_id,
u32 transaction_id, union mux_cmd_param *param,
size_t res_size, bool blocking, bool respond);
/**
* ipc_mux_netif_tx_flowctrl - Enable/Disable TX flow control on MUX sessions.
* @session: Pointer to mux_session struct
* @idx: Session ID
* @on: true for Enable and false for disable flow control
*/
void ipc_mux_netif_tx_flowctrl(struct mux_session *session, int idx, bool on);
/**
* ipc_mux_ul_trigger_encode - Route the UL packet through the IP MUX layer
* for encoding.
* @ipc_mux: Pointer to MUX data-struct
* @if_id: Session ID.
* @skb: Pointer to ipc_skb.
*
* Returns: 0 if successfully encoded
* failure value on error
* -EBUSY if packet has to be retransmitted.
*/
int ipc_mux_ul_trigger_encode(struct iosm_mux *ipc_mux, int if_id,
struct sk_buff *skb);
/**
* ipc_mux_ul_data_encode - UL encode function for calling from Tasklet context.
* @ipc_mux: Pointer to MUX data-struct
*
* Returns: TRUE if any packet of any session is encoded FALSE otherwise.
*/
bool ipc_mux_ul_data_encode(struct iosm_mux *ipc_mux);
/**
* ipc_mux_ul_encoded_process - Handles the Modem processed UL data by adding
* the SKB to the UL free list.
* @ipc_mux: Pointer to MUX data-struct
* @skb: Pointer to ipc_skb.
*/
void ipc_mux_ul_encoded_process(struct iosm_mux *ipc_mux, struct sk_buff *skb);
#endif
|
