samsung-sm8650/android_kernel_samsung_sm8650-modules
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eedd0b9c6d8760d3899ba4c2a27e7807c4d19193
android_kernel_samsung_sm86…/core/rmnet_map.h
Sean Tranchetti 5860a49e62 rmnet_core: Allow different UL aggregation params per state 
Allows the use of different uplink aggregation parameters for the
default and low-latency uplink aggregation states. To faciliate this,
both contexts now have their own page recycling elements instead of a
single port-wide list, as well as their own instance of the
rmnet_egress_agg_params struct.

To configure these paramters, a new netlink attribute has been created
for specifying which aggregation state the given IFLA_RMNET_UL_AGG_PARAMS
attribute should apply to. For compatibility with user space, the default
state will be chosen if this element is not provided.

Change-Id: Ia340bbb479d9427658a153a2019f4891da0b741c
Signed-off-by: Sean Tranchetti <stranche@codeaurora.org>
2021-05-14 10:30:48 -07:00

301 rinda
8.1 KiB
C
Neapstrādāts Vainot Vēsture

/* Copyright (c) 2013-2021, 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 _RMNET_MAP_H_
#define _RMNET_MAP_H_
#include <linux/skbuff.h>
#include "rmnet_config.h"
struct rmnet_map_control_command {
u8 command_name;
u8 cmd_type:2;
u8 reserved:6;
u16 reserved2;
u32 transaction_id;
union {
struct {
u16 ip_family:2;
u16 reserved:14;
__be16 flow_control_seq_num;
__be32 qos_id;
} flow_control;
u8 data[0];
};
} __aligned(1);
enum rmnet_map_commands {
RMNET_MAP_COMMAND_NONE,
RMNET_MAP_COMMAND_FLOW_DISABLE,
RMNET_MAP_COMMAND_FLOW_ENABLE,
RMNET_MAP_COMMAND_FLOW_START = 7,
RMNET_MAP_COMMAND_FLOW_END = 8,
/* These should always be the last 2 elements */
RMNET_MAP_COMMAND_UNKNOWN,
RMNET_MAP_COMMAND_ENUM_LENGTH
};
enum rmnet_map_v5_header_type {
RMNET_MAP_HEADER_TYPE_UNKNOWN,
RMNET_MAP_HEADER_TYPE_COALESCING = 0x1,
RMNET_MAP_HEADER_TYPE_CSUM_OFFLOAD = 0x2,
RMNET_MAP_HEADER_TYPE_TSO = 0x3,
RMNET_MAP_HEADER_TYPE_ENUM_LENGTH
};
enum rmnet_map_v5_close_type {
RMNET_MAP_COAL_CLOSE_NON_COAL,
RMNET_MAP_COAL_CLOSE_IP_MISS,
RMNET_MAP_COAL_CLOSE_TRANS_MISS,
RMNET_MAP_COAL_CLOSE_HW,
RMNET_MAP_COAL_CLOSE_COAL,
};
enum rmnet_map_v5_close_value {
RMNET_MAP_COAL_CLOSE_HW_NL,
RMNET_MAP_COAL_CLOSE_HW_PKT,
RMNET_MAP_COAL_CLOSE_HW_BYTE,
RMNET_MAP_COAL_CLOSE_HW_TIME,
RMNET_MAP_COAL_CLOSE_HW_EVICT,
};
/* Main QMAP header */
struct rmnet_map_header {
u8 pad_len:6;
u8 next_hdr:1;
u8 cd_bit:1;
u8 mux_id;
__be16 pkt_len;
} __aligned(1);
/* QMAP v5 headers */
struct rmnet_map_v5_csum_header {
u8 next_hdr:1;
u8 header_type:7;
u8 hw_reserved:5;
u8 priority:1;
u8 hw_reserved_bit:1;
u8 csum_valid_required:1;
__be16 reserved;
} __aligned(1);
struct rmnet_map_v5_nl_pair {
__be16 pkt_len;
u8 csum_error_bitmap;
u8 num_packets;
} __aligned(1);
/* NLO: Number-length object */
#define RMNET_MAP_V5_MAX_NLOS (6)
#define RMNET_MAP_V5_MAX_PACKETS (48)
struct rmnet_map_v5_coal_header {
u8 next_hdr:1;
u8 header_type:7;
u8 reserved1:4;
u8 num_nlos:3;
u8 csum_valid:1;
u8 close_type:4;
u8 close_value:4;
u8 reserved2:4;
u8 virtual_channel_id:4;
struct rmnet_map_v5_nl_pair nl_pairs[RMNET_MAP_V5_MAX_NLOS];
} __aligned(1);
struct rmnet_map_v5_tso_header {
u8 next_hdr:1;
u8 header_type:7;
u8 hw_reserved:5;
u8 priority:1;
u8 zero_csum:1;
u8 ip_id_cfg:1;
__be16 segment_size;
} __aligned(1);
/* QMAP v4 headers */
struct rmnet_map_dl_csum_trailer {
u8 reserved1;
u8 valid:1;
u8 reserved2:7;
u16 csum_start_offset;
u16 csum_length;
__be16 csum_value;
} __aligned(1);
struct rmnet_map_ul_csum_header {
__be16 csum_start_offset;
u16 csum_insert_offset:14;
u16 udp_ind:1;
u16 csum_enabled:1;
} __aligned(1);
struct rmnet_map_control_command_header {
u8 command_name;
u8 cmd_type:2;
u8 reserved:5;
u8 e:1;
u16 source_id:15;
u16 ext:1;
u32 transaction_id;
} __aligned(1);
struct rmnet_map_flow_info_le {
__be32 mux_id;
__be32 flow_id;
__be32 bytes;
__be32 pkts;
} __aligned(1);
struct rmnet_map_flow_info_be {
u32 mux_id;
u32 flow_id;
u32 bytes;
u32 pkts;
} __aligned(1);
struct rmnet_map_dl_ind_hdr {
union {
struct {
u32 seq;
u32 bytes;
u32 pkts;
u32 flows;
struct rmnet_map_flow_info_le flow[0];
} le __aligned(1);
struct {
__be32 seq;
__be32 bytes;
__be32 pkts;
__be32 flows;
struct rmnet_map_flow_info_be flow[0];
} be __aligned(1);
} __aligned(1);
} __aligned(1);
struct rmnet_map_dl_ind_trl {
union {
__be32 seq_be;
u32 seq_le;
} __aligned(1);
} __aligned(1);
struct rmnet_map_dl_ind {
u8 priority;
void (*dl_hdr_handler_v2)(struct rmnet_map_dl_ind_hdr *dlhdr,
struct rmnet_map_control_command_header *qcmd);
void (*dl_trl_handler_v2)(struct rmnet_map_dl_ind_trl *dltrl,
struct rmnet_map_control_command_header *qcmd);
struct list_head list;
};
#define RMNET_MAP_GET_MUX_ID(Y) (((struct rmnet_map_header *) \
(Y)->data)->mux_id)
#define RMNET_MAP_GET_CD_BIT(Y) (((struct rmnet_map_header *) \
(Y)->data)->cd_bit)
#define RMNET_MAP_GET_PAD(Y) (((struct rmnet_map_header *) \
(Y)->data)->pad_len)
#define RMNET_MAP_GET_CMD_START(Y) ((struct rmnet_map_control_command *) \
((Y)->data + \
sizeof(struct rmnet_map_header)))
#define RMNET_MAP_GET_LENGTH(Y) (ntohs(((struct rmnet_map_header *) \
(Y)->data)->pkt_len))
#define RMNET_MAP_DEAGGR_SPACING 64
#define RMNET_MAP_DEAGGR_HEADROOM (RMNET_MAP_DEAGGR_SPACING / 2)
#define RMNET_MAP_COMMAND_REQUEST 0
#define RMNET_MAP_COMMAND_ACK 1
#define RMNET_MAP_COMMAND_UNSUPPORTED 2
#define RMNET_MAP_COMMAND_INVALID 3
#define RMNET_MAP_NO_PAD_BYTES 0
#define RMNET_MAP_ADD_PAD_BYTES 1
static inline unsigned char *rmnet_map_data_ptr(struct sk_buff *skb)
{
/* Nonlinear packets we receive are entirely within frag 0 */
if (skb_is_nonlinear(skb) && skb->len == skb->data_len)
return skb_frag_address(skb_shinfo(skb)->frags);
return skb->data;
}
static inline struct rmnet_map_control_command *
rmnet_map_get_cmd_start(struct sk_buff *skb)
{
unsigned char *data = rmnet_map_data_ptr(skb);
data += sizeof(struct rmnet_map_header);
return (struct rmnet_map_control_command *)data;
}
static inline u8 rmnet_map_get_next_hdr_type(struct sk_buff *skb)
{
unsigned char *data = rmnet_map_data_ptr(skb);
data += sizeof(struct rmnet_map_header);
return ((struct rmnet_map_v5_coal_header *)data)->header_type;
}
static inline bool rmnet_map_get_csum_valid(struct sk_buff *skb)
{
unsigned char *data = rmnet_map_data_ptr(skb);
data += sizeof(struct rmnet_map_header);
return ((struct rmnet_map_v5_csum_header *)data)->csum_valid_required;
}
struct sk_buff *rmnet_map_deaggregate(struct sk_buff *skb,
struct rmnet_port *port);
struct rmnet_map_header *rmnet_map_add_map_header(struct sk_buff *skb,
int hdrlen, int pad,
struct rmnet_port *port);
void rmnet_map_command(struct sk_buff *skb, struct rmnet_port *port);
int rmnet_map_checksum_downlink_packet(struct sk_buff *skb, u16 len);
void rmnet_map_checksum_uplink_packet(struct sk_buff *skb,
struct rmnet_port *port,
struct net_device *orig_dev,
int csum_type);
bool rmnet_map_v5_csum_buggy(struct rmnet_map_v5_coal_header *coal_hdr);
int rmnet_map_process_next_hdr_packet(struct sk_buff *skb,
struct sk_buff_head *list,
u16 len);
int rmnet_map_tx_agg_skip(struct sk_buff *skb, int offset);
void rmnet_map_tx_aggregate(struct sk_buff *skb, struct rmnet_port *port,
bool low_latency);
void rmnet_map_tx_aggregate_init(struct rmnet_port *port);
void rmnet_map_tx_aggregate_exit(struct rmnet_port *port);
void rmnet_map_update_ul_agg_config(struct rmnet_aggregation_state *state,
u16 size, u8 count, u8 features, u32 time);
void rmnet_map_dl_hdr_notify_v2(struct rmnet_port *port,
struct rmnet_map_dl_ind_hdr *dl_hdr,
struct rmnet_map_control_command_header *qcmd);
void rmnet_map_dl_trl_notify_v2(struct rmnet_port *port,
struct rmnet_map_dl_ind_trl *dltrl,
struct rmnet_map_control_command_header *qcmd);
int rmnet_map_flow_command(struct sk_buff *skb,
struct rmnet_port *port,
bool rmnet_perf);
void rmnet_map_cmd_init(struct rmnet_port *port);
int rmnet_map_dl_ind_register(struct rmnet_port *port,
struct rmnet_map_dl_ind *dl_ind);
int rmnet_map_dl_ind_deregister(struct rmnet_port *port,
struct rmnet_map_dl_ind *dl_ind);
void rmnet_map_cmd_exit(struct rmnet_port *port);
void rmnet_map_tx_qmap_cmd(struct sk_buff *qmap_skb, u8 ch, bool flush);
void rmnet_map_send_agg_skb(struct rmnet_aggregation_state *state,
unsigned long flags);
int rmnet_map_add_tso_header(struct sk_buff *skb, struct rmnet_port *port,
struct net_device *orig_dev);
#endif /* _RMNET_MAP_H_ */
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