core: Rmnet initial commit
Inital commit of rmnet_core net device driver in dlkm form in datarmnet. This requires rmnet to be disabled in the kernel and for it to be loaded before dependent modules. CRs-Fixed: 2558810 Change-Id: I742e85033fa0999bf9069d43ce73ab9a622a8388 Acked-by: Raul Martinez <mraul@qti.qualcomm.com> Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
This commit is contained in:
Subash Abhinov Kasiviswanathan
289
core/rmnet_map.h
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289
core/rmnet_map.h
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/* Copyright (c) 2013-2019, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _RMNET_MAP_H_
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#define _RMNET_MAP_H_
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#include <linux/skbuff.h>
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#include "rmnet_config.h"
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struct rmnet_map_control_command {
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u8 command_name;
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u8 cmd_type:2;
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u8 reserved:6;
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u16 reserved2;
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u32 transaction_id;
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union {
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struct {
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u16 ip_family:2;
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u16 reserved:14;
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__be16 flow_control_seq_num;
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__be32 qos_id;
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} flow_control;
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u8 data[0];
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};
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} __aligned(1);
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enum rmnet_map_commands {
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RMNET_MAP_COMMAND_NONE,
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RMNET_MAP_COMMAND_FLOW_DISABLE,
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RMNET_MAP_COMMAND_FLOW_ENABLE,
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RMNET_MAP_COMMAND_FLOW_START = 7,
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RMNET_MAP_COMMAND_FLOW_END = 8,
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/* These should always be the last 2 elements */
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RMNET_MAP_COMMAND_UNKNOWN,
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RMNET_MAP_COMMAND_ENUM_LENGTH
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};
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enum rmnet_map_v5_header_type {
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RMNET_MAP_HEADER_TYPE_UNKNOWN,
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RMNET_MAP_HEADER_TYPE_COALESCING = 0x1,
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RMNET_MAP_HEADER_TYPE_CSUM_OFFLOAD = 0x2,
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RMNET_MAP_HEADER_TYPE_ENUM_LENGTH
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};
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enum rmnet_map_v5_close_type {
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RMNET_MAP_COAL_CLOSE_NON_COAL,
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RMNET_MAP_COAL_CLOSE_IP_MISS,
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RMNET_MAP_COAL_CLOSE_TRANS_MISS,
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RMNET_MAP_COAL_CLOSE_HW,
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RMNET_MAP_COAL_CLOSE_COAL,
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};
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enum rmnet_map_v5_close_value {
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RMNET_MAP_COAL_CLOSE_HW_NL,
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RMNET_MAP_COAL_CLOSE_HW_PKT,
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RMNET_MAP_COAL_CLOSE_HW_BYTE,
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RMNET_MAP_COAL_CLOSE_HW_TIME,
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RMNET_MAP_COAL_CLOSE_HW_EVICT,
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};
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/* Main QMAP header */
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struct rmnet_map_header {
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u8 pad_len:6;
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u8 next_hdr:1;
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u8 cd_bit:1;
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u8 mux_id;
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__be16 pkt_len;
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} __aligned(1);
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/* QMAP v5 headers */
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struct rmnet_map_v5_csum_header {
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u8 next_hdr:1;
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u8 header_type:7;
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u8 hw_reserved:7;
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u8 csum_valid_required:1;
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__be16 reserved;
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} __aligned(1);
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struct rmnet_map_v5_nl_pair {
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__be16 pkt_len;
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u8 csum_error_bitmap;
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u8 num_packets;
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} __aligned(1);
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/* NLO: Number-length object */
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#define RMNET_MAP_V5_MAX_NLOS (6)
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#define RMNET_MAP_V5_MAX_PACKETS (48)
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struct rmnet_map_v5_coal_header {
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u8 next_hdr:1;
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u8 header_type:7;
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u8 reserved1:4;
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u8 num_nlos:3;
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u8 csum_valid:1;
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u8 close_type:4;
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u8 close_value:4;
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u8 reserved2:4;
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u8 virtual_channel_id:4;
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struct rmnet_map_v5_nl_pair nl_pairs[RMNET_MAP_V5_MAX_NLOS];
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} __aligned(1);
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/* QMAP v4 headers */
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struct rmnet_map_dl_csum_trailer {
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u8 reserved1;
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u8 valid:1;
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u8 reserved2:7;
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u16 csum_start_offset;
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u16 csum_length;
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__be16 csum_value;
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} __aligned(1);
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struct rmnet_map_ul_csum_header {
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__be16 csum_start_offset;
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u16 csum_insert_offset:14;
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u16 udp_ip4_ind:1;
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u16 csum_enabled:1;
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} __aligned(1);
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struct rmnet_map_control_command_header {
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u8 command_name;
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u8 cmd_type:2;
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u8 reserved:5;
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u8 e:1;
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u16 source_id:15;
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u16 ext:1;
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u32 transaction_id;
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} __aligned(1);
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struct rmnet_map_flow_info_le {
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__be32 mux_id;
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__be32 flow_id;
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__be32 bytes;
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__be32 pkts;
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} __aligned(1);
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struct rmnet_map_flow_info_be {
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u32 mux_id;
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u32 flow_id;
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u32 bytes;
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u32 pkts;
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} __aligned(1);
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struct rmnet_map_dl_ind_hdr {
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union {
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struct {
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u32 seq;
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u32 bytes;
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u32 pkts;
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u32 flows;
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struct rmnet_map_flow_info_le flow[0];
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} le __aligned(1);
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struct {
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__be32 seq;
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__be32 bytes;
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__be32 pkts;
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__be32 flows;
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struct rmnet_map_flow_info_be flow[0];
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} be __aligned(1);
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} __aligned(1);
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} __aligned(1);
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struct rmnet_map_dl_ind_trl {
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union {
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__be32 seq_be;
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u32 seq_le;
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} __aligned(1);
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} __aligned(1);
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struct rmnet_map_dl_ind {
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u8 priority;
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union {
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void (*dl_hdr_handler)(struct rmnet_map_dl_ind_hdr *);
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void (*dl_hdr_handler_v2)(struct rmnet_map_dl_ind_hdr *,
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struct
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rmnet_map_control_command_header *);
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} __aligned(1);
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union {
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void (*dl_trl_handler)(struct rmnet_map_dl_ind_trl *);
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void (*dl_trl_handler_v2)(struct rmnet_map_dl_ind_trl *,
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struct
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rmnet_map_control_command_header *);
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} __aligned(1);
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struct list_head list;
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};
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#define RMNET_MAP_GET_MUX_ID(Y) (((struct rmnet_map_header *) \
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(Y)->data)->mux_id)
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#define RMNET_MAP_GET_CD_BIT(Y) (((struct rmnet_map_header *) \
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(Y)->data)->cd_bit)
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#define RMNET_MAP_GET_PAD(Y) (((struct rmnet_map_header *) \
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(Y)->data)->pad_len)
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#define RMNET_MAP_GET_CMD_START(Y) ((struct rmnet_map_control_command *) \
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((Y)->data + \
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sizeof(struct rmnet_map_header)))
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#define RMNET_MAP_GET_LENGTH(Y) (ntohs(((struct rmnet_map_header *) \
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(Y)->data)->pkt_len))
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#define RMNET_MAP_DEAGGR_SPACING 64
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#define RMNET_MAP_DEAGGR_HEADROOM (RMNET_MAP_DEAGGR_SPACING / 2)
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#define RMNET_MAP_COMMAND_REQUEST 0
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#define RMNET_MAP_COMMAND_ACK 1
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#define RMNET_MAP_COMMAND_UNSUPPORTED 2
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#define RMNET_MAP_COMMAND_INVALID 3
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#define RMNET_MAP_NO_PAD_BYTES 0
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#define RMNET_MAP_ADD_PAD_BYTES 1
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static inline unsigned char *rmnet_map_data_ptr(struct sk_buff *skb)
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{
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/* Nonlinear packets we receive are entirely within frag 0 */
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if (skb_is_nonlinear(skb) && skb->len == skb->data_len)
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return skb_frag_address(skb_shinfo(skb)->frags);
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return skb->data;
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}
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static inline struct rmnet_map_control_command *
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rmnet_map_get_cmd_start(struct sk_buff *skb)
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{
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unsigned char *data = rmnet_map_data_ptr(skb);
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data += sizeof(struct rmnet_map_header);
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return (struct rmnet_map_control_command *)data;
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}
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static inline u8 rmnet_map_get_next_hdr_type(struct sk_buff *skb)
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{
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unsigned char *data = rmnet_map_data_ptr(skb);
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data += sizeof(struct rmnet_map_header);
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return ((struct rmnet_map_v5_coal_header *)data)->header_type;
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}
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static inline bool rmnet_map_get_csum_valid(struct sk_buff *skb)
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{
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unsigned char *data = rmnet_map_data_ptr(skb);
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data += sizeof(struct rmnet_map_header);
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return ((struct rmnet_map_v5_csum_header *)data)->csum_valid_required;
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}
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struct sk_buff *rmnet_map_deaggregate(struct sk_buff *skb,
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struct rmnet_port *port);
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struct rmnet_map_header *rmnet_map_add_map_header(struct sk_buff *skb,
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int hdrlen, int pad,
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struct rmnet_port *port);
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void rmnet_map_command(struct sk_buff *skb, struct rmnet_port *port);
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int rmnet_map_checksum_downlink_packet(struct sk_buff *skb, u16 len);
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void rmnet_map_checksum_uplink_packet(struct sk_buff *skb,
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struct net_device *orig_dev,
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int csum_type);
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int rmnet_map_process_next_hdr_packet(struct sk_buff *skb,
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struct sk_buff_head *list,
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u16 len);
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int rmnet_map_tx_agg_skip(struct sk_buff *skb, int offset);
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void rmnet_map_tx_aggregate(struct sk_buff *skb, struct rmnet_port *port);
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void rmnet_map_tx_aggregate_init(struct rmnet_port *port);
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void rmnet_map_tx_aggregate_exit(struct rmnet_port *port);
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void rmnet_map_dl_hdr_notify(struct rmnet_port *port,
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struct rmnet_map_dl_ind_hdr *dl_hdr);
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void rmnet_map_dl_hdr_notify_v2(struct rmnet_port *port,
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struct rmnet_map_dl_ind_hdr *dl_hdr,
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struct rmnet_map_control_command_header *qcmd);
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void rmnet_map_dl_trl_notify(struct rmnet_port *port,
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struct rmnet_map_dl_ind_trl *dltrl);
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void rmnet_map_dl_trl_notify_v2(struct rmnet_port *port,
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struct rmnet_map_dl_ind_trl *dltrl,
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struct rmnet_map_control_command_header *qcmd);
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int rmnet_map_flow_command(struct sk_buff *skb,
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struct rmnet_port *port,
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bool rmnet_perf);
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void rmnet_map_cmd_init(struct rmnet_port *port);
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int rmnet_map_dl_ind_register(struct rmnet_port *port,
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struct rmnet_map_dl_ind *dl_ind);
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int rmnet_map_dl_ind_deregister(struct rmnet_port *port,
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struct rmnet_map_dl_ind *dl_ind);
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void rmnet_map_cmd_exit(struct rmnet_port *port);
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#endif /* _RMNET_MAP_H_ */
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