326 lines
9.9 KiB
C
326 lines
9.9 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only
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*
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* Copyright (C) 2020-21 Intel Corporation.
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*/
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#ifndef IOSM_IPC_MUX_CODEC_H
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#define IOSM_IPC_MUX_CODEC_H
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#include "iosm_ipc_mux.h"
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/* Queue level size and reporting
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* >1 is enable, 0 is disable
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*/
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#define MUX_QUEUE_LEVEL 1
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/* ADB finish timer value */
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#define IOSM_AGGR_MUX_ADB_FINISH_TIMEOUT_NSEC (500 * 1000)
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/* Enables the flow control (Flow is not allowed) */
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#define IOSM_AGGR_MUX_CMD_FLOW_CTL_ENABLE 5
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/* Disables the flow control (Flow is allowed) */
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#define IOSM_AGGR_MUX_CMD_FLOW_CTL_DISABLE 6
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/* ACK the flow control command. Shall have the same Transaction ID as the
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* matching FLOW_CTL command
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*/
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#define IOSM_AGGR_MUX_CMD_FLOW_CTL_ACK 7
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/* Aggregation Protocol Command for report packet indicating link quality
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*/
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#define IOSM_AGGR_MUX_CMD_LINK_STATUS_REPORT 8
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/* Response to a report packet */
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#define IOSM_AGGR_MUX_CMD_LINK_STATUS_REPORT_RESP 9
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/* ACBH: Signature of the Aggregated Command Block Header. */
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#define IOSM_AGGR_MUX_SIG_ACBH 0x48424341
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/* ADTH: Signature of the Aggregated Datagram Table Header. */
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#define IOSM_AGGR_MUX_SIG_ADTH 0x48544441
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/* ADBH: Signature of the Aggregated Data Block Header. */
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#define IOSM_AGGR_MUX_SIG_ADBH 0x48424441
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/* ADGH: Signature of the Datagram Header. */
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#define IOSM_AGGR_MUX_SIG_ADGH 0x48474441
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/* Size of the buffer for the IP MUX commands. */
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#define MUX_MAX_UL_ACB_BUF_SIZE 256
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/* Maximum number of packets in a go per session */
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#define MUX_MAX_UL_DG_ENTRIES 100
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/* ADGH: Signature of the Datagram Header. */
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#define MUX_SIG_ADGH 0x48474441
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/* CMDH: Signature of the Command Header. */
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#define MUX_SIG_CMDH 0x48444D43
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/* QLTH: Signature of the Queue Level Table */
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#define MUX_SIG_QLTH 0x48544C51
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/* FCTH: Signature of the Flow Credit Table */
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#define MUX_SIG_FCTH 0x48544346
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/* MUX UL session threshold factor */
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#define IPC_MEM_MUX_UL_SESS_FCOFF_THRESHOLD_FACTOR (4)
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/* Size of the buffer for the IP MUX Lite data buffer. */
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#define IPC_MEM_MAX_DL_MUX_LITE_BUF_SIZE (2 * 1024)
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/* MUX UL session threshold in number of packets */
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#define IPC_MEM_MUX_UL_SESS_FCON_THRESHOLD (64)
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/* Default time out for sending IPC session commands like
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* open session, close session etc
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* unit : milliseconds
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*/
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#define IPC_MUX_CMD_RUN_DEFAULT_TIMEOUT 1000 /* 1 second */
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/* MUX UL flow control lower threshold in bytes */
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#define IPC_MEM_MUX_UL_FLOWCTRL_LOW_B 10240 /* 10KB */
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/* MUX UL flow control higher threshold in bytes (5ms worth of data)*/
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#define IPC_MEM_MUX_UL_FLOWCTRL_HIGH_B (110 * 1024)
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/**
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* struct mux_cmdh - Structure of Command Header.
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* @signature: Signature of the Command Header.
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* @cmd_len: Length (in bytes) of the Aggregated Command Block.
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* @if_id: ID of the interface the commands in the table belong to.
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* @reserved: Reserved. Set to zero.
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* @next_cmd_index: Index (in bytes) to the next command in the buffer.
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* @command_type: Command Enum. See table Session Management chapter for
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* details.
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* @transaction_id: The Transaction ID shall be unique to the command
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* @param: Optional parameters used with the command.
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*/
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struct mux_cmdh {
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__le32 signature;
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__le16 cmd_len;
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u8 if_id;
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u8 reserved;
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__le32 next_cmd_index;
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__le32 command_type;
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__le32 transaction_id;
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union mux_cmd_param param;
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};
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/**
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* struct mux_acbh - Structure of the Aggregated Command Block Header.
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* @signature: Signature of the Aggregated Command Block Header.
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* @reserved: Reserved bytes. Set to zero.
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* @sequence_nr: Block sequence number.
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* @block_length: Length (in bytes) of the Aggregated Command Block.
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* @first_cmd_index: Index (in bytes) to the first command in the buffer.
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*/
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struct mux_acbh {
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__le32 signature;
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__le16 reserved;
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__le16 sequence_nr;
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__le32 block_length;
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__le32 first_cmd_index;
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};
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/**
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* struct mux_adbh - Structure of the Aggregated Data Block Header.
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* @signature: Signature of the Aggregated Data Block Header.
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* @reserved: Reserved bytes. Set to zero.
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* @sequence_nr: Block sequence number.
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* @block_length: Length (in bytes) of the Aggregated Data Block.
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* @first_table_index: Index (in bytes) to the first Datagram Table in
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* the buffer.
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*/
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struct mux_adbh {
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__le32 signature;
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__le16 reserved;
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__le16 sequence_nr;
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__le32 block_length;
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__le32 first_table_index;
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};
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/**
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* struct mux_adth - Structure of the Aggregated Datagram Table Header.
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* @signature: Signature of the Aggregated Datagram Table Header.
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* @table_length: Length (in bytes) of the datagram table.
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* @if_id: ID of the interface the datagrams in the table
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* belong to.
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* @opt_ipv4v6: Indicates IPv4(=0)/IPv6(=1) hint.
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* @reserved: Reserved bits. Set to zero.
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* @next_table_index: Index (in bytes) to the next Datagram Table in
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* the buffer.
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* @reserved2: Reserved bytes. Set to zero
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* @dg: datagramm table with variable length
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*/
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struct mux_adth {
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__le32 signature;
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__le16 table_length;
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u8 if_id;
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u8 opt_ipv4v6;
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__le32 next_table_index;
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__le32 reserved2;
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struct mux_adth_dg dg;
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};
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/**
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* struct mux_adgh - Aggregated Datagram Header.
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* @signature: Signature of the Aggregated Datagram Header(0x48474441)
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* @length: Length (in bytes) of the datagram header. This length
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* shall include the header size. Min value: 0x10
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* @if_id: ID of the interface the datagrams belong to
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* @opt_ipv4v6: Indicates IPv4(=0)/IPv6(=1), It is optional if not
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* used set it to zero.
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* @reserved: Reserved bits. Set to zero.
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* @service_class: Service class identifier for the datagram.
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* @next_count: Count of the datagrams that shall be following this
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* datagrams for this interface. A count of zero means
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* the next datagram may not belong to this interface.
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* @reserved1: Reserved bytes, Set to zero
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*/
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struct mux_adgh {
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__le32 signature;
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__le16 length;
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u8 if_id;
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u8 opt_ipv4v6;
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u8 service_class;
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u8 next_count;
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u8 reserved1[6];
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};
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/**
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* struct mux_lite_cmdh - MUX Lite Command Header
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* @signature: Signature of the Command Header(0x48444D43)
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* @cmd_len: Length (in bytes) of the command. This length shall
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* include the header size. Minimum value: 0x10
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* @if_id: ID of the interface the commands in the table belong to.
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* @reserved: Reserved Set to zero.
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* @command_type: Command Enum.
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* @transaction_id: 4 byte value shall be generated and sent along with a
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* command Responses and ACKs shall have the same
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* Transaction ID as their commands. It shall be unique to
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* the command transaction on the given interface.
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* @param: Optional parameters used with the command.
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*/
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struct mux_lite_cmdh {
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__le32 signature;
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__le16 cmd_len;
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u8 if_id;
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u8 reserved;
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__le32 command_type;
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__le32 transaction_id;
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union mux_cmd_param param;
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};
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/**
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* struct mux_lite_vfl - value field in generic table
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* @nr_of_bytes: Number of bytes available to transmit in the queue.
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*/
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struct mux_lite_vfl {
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__le32 nr_of_bytes;
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};
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/**
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* struct ipc_mem_lite_gen_tbl - Generic table format for Queue Level
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* and Flow Credit
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* @signature: Signature of the table
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* @length: Length of the table
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* @if_id: ID of the interface the table belongs to
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* @vfl_length: Value field length
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* @reserved: Reserved
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* @vfl: Value field of variable length
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*/
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struct ipc_mem_lite_gen_tbl {
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__le32 signature;
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__le16 length;
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u8 if_id;
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u8 vfl_length;
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u32 reserved[2];
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struct mux_lite_vfl vfl;
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};
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/**
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* struct mux_type_cmdh - Structure of command header for mux lite and aggr
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* @ack_lite: MUX Lite Command Header pointer
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* @ack_aggr: Command Header pointer
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*/
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union mux_type_cmdh {
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struct mux_lite_cmdh *ack_lite;
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struct mux_cmdh *ack_aggr;
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};
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/**
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* struct mux_type_header - Structure of mux header type
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* @adgh: Aggregated Datagram Header pointer
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* @adbh: Aggregated Data Block Header pointer
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*/
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union mux_type_header {
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struct mux_adgh *adgh;
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struct mux_adbh *adbh;
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};
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void ipc_mux_dl_decode(struct iosm_mux *ipc_mux, struct sk_buff *skb);
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/**
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* ipc_mux_dl_acb_send_cmds - Respond to the Command blocks.
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* @ipc_mux: Pointer to MUX data-struct
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* @cmd_type: Command
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* @if_id: Session interface id.
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* @transaction_id: Command transaction id.
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* @param: Pointer to command params.
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* @res_size: Response size
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* @blocking: True for blocking send
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* @respond: If true return transaction ID
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*
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* Returns: 0 in success and failure value on error
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*/
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int ipc_mux_dl_acb_send_cmds(struct iosm_mux *ipc_mux, u32 cmd_type, u8 if_id,
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u32 transaction_id, union mux_cmd_param *param,
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size_t res_size, bool blocking, bool respond);
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/**
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* ipc_mux_netif_tx_flowctrl - Enable/Disable TX flow control on MUX sessions.
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* @session: Pointer to mux_session struct
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* @idx: Session ID
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* @on: true for Enable and false for disable flow control
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*/
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void ipc_mux_netif_tx_flowctrl(struct mux_session *session, int idx, bool on);
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/**
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* ipc_mux_ul_trigger_encode - Route the UL packet through the IP MUX layer
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* for encoding.
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* @ipc_mux: Pointer to MUX data-struct
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* @if_id: Session ID.
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* @skb: Pointer to ipc_skb.
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*
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* Returns: 0 if successfully encoded
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* failure value on error
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* -EBUSY if packet has to be retransmitted.
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*/
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int ipc_mux_ul_trigger_encode(struct iosm_mux *ipc_mux, int if_id,
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struct sk_buff *skb);
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/**
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* ipc_mux_ul_data_encode - UL encode function for calling from Tasklet context.
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* @ipc_mux: Pointer to MUX data-struct
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*
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* Returns: TRUE if any packet of any session is encoded FALSE otherwise.
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*/
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bool ipc_mux_ul_data_encode(struct iosm_mux *ipc_mux);
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/**
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* ipc_mux_ul_encoded_process - Handles the Modem processed UL data by adding
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* the SKB to the UL free list.
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* @ipc_mux: Pointer to MUX data-struct
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* @skb: Pointer to ipc_skb.
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*/
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void ipc_mux_ul_encoded_process(struct iosm_mux *ipc_mux, struct sk_buff *skb);
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void ipc_mux_ul_adb_finish(struct iosm_mux *ipc_mux);
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void ipc_mux_ul_adb_update_ql(struct iosm_mux *ipc_mux, struct mux_adb *p_adb,
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int session_id, int qlth_n_ql_size,
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struct sk_buff_head *ul_list);
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#endif
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