08fed02b9e
The delay argument in schedule_delayed_work(struct delayed_work *dwork, unsigned long delay) API is jiffies. The system tick for seems to be 100Hz, so the minimum time resolution for the work to be scheduled is 10ms. Switch to hrtimer to achieve 3 ms granularity with a current timer of 1ms for the flush thread. A workqueue is immediately scheduled in the same context after this timer expiry to do the tx work. CRs-Fixed: 2157214 Change-Id: I29cbbee417e84b101ed34c0d29c2731bd52c3ec5 Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
152 lines
4.2 KiB
C
152 lines
4.2 KiB
C
/* Copyright (c) 2013-2017, 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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#include <linux/types.h>
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#include <linux/spinlock.h>
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#include <net/rmnet_config.h>
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#ifndef _RMNET_MAP_H_
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#define _RMNET_MAP_H_
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struct rmnet_map_control_command_s {
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u8 command_name;
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#ifndef RMNET_USE_BIG_ENDIAN_STRUCTS
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u8 cmd_type:2;
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u8 reserved:6;
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#else
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u8 reserved:6;
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u8 cmd_type:2;
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#endif /* RMNET_USE_BIG_ENDIAN_STRUCTS */
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u16 reserved2;
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u32 transaction_id;
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union {
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u8 data[65528];
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struct {
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#ifndef RMNET_USE_BIG_ENDIAN_STRUCTS
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u16 ip_family:2;
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u16 reserved:14;
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#else
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u16 reserved:14;
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u16 ip_family:2;
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#endif /* RMNET_USE_BIG_ENDIAN_STRUCTS */
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u16 flow_control_seq_num;
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u32 qos_id;
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} flow_control;
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};
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} __aligned(1);
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struct rmnet_map_dl_checksum_trailer_s {
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unsigned char reserved_h;
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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unsigned char valid:1;
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unsigned char reserved_l:7;
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#elif defined(__BIG_ENDIAN_BITFIELD)
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unsigned char reserved_l:7;
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unsigned char valid:1;
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#else
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#error "Please fix <asm/byteorder.h>"
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#endif
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unsigned short checksum_start_offset;
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unsigned short checksum_length;
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unsigned short checksum_value;
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} __aligned(1);
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struct rmnet_map_ul_checksum_header_s {
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unsigned short checksum_start_offset;
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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unsigned short checksum_insert_offset:14;
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unsigned short udp_ip4_ind:1;
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unsigned short cks_en:1;
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#elif defined(__BIG_ENDIAN_BITFIELD)
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unsigned short cks_en:1;
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unsigned short udp_ip4_ind:1;
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unsigned short checksum_insert_offset:14;
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#else
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#error "Please fix <asm/byteorder.h>"
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#endif
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} __aligned(1);
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enum rmnet_map_results_e {
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RMNET_MAP_SUCCESS,
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RMNET_MAP_CONSUMED,
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RMNET_MAP_GENERAL_FAILURE,
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RMNET_MAP_NOT_ENABLED,
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RMNET_MAP_FAILED_AGGREGATION,
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RMNET_MAP_FAILED_MUX
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};
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enum rmnet_map_mux_errors_e {
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RMNET_MAP_MUX_SUCCESS,
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RMNET_MAP_MUX_INVALID_MUX_ID,
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RMNET_MAP_MUX_INVALID_PAD_LENGTH,
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RMNET_MAP_MUX_INVALID_PKT_LENGTH,
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/* This should always be the last element */
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RMNET_MAP_MUX_ENUM_LENGTH
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};
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enum rmnet_map_checksum_errors_e {
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RMNET_MAP_CHECKSUM_OK,
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RMNET_MAP_CHECKSUM_VALID_FLAG_NOT_SET,
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RMNET_MAP_CHECKSUM_VALIDATION_FAILED,
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RMNET_MAP_CHECKSUM_ERR_UNKNOWN,
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RMNET_MAP_CHECKSUM_ERR_NOT_DATA_PACKET,
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RMNET_MAP_CHECKSUM_ERR_BAD_BUFFER,
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RMNET_MAP_CHECKSUM_ERR_UNKNOWN_IP_VERSION,
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RMNET_MAP_CHECKSUM_ERR_UNKNOWN_TRANSPORT,
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RMNET_MAP_CHECKSUM_FRAGMENTED_PACKET,
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RMNET_MAP_CHECKSUM_SKIPPED,
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RMNET_MAP_CHECKSUM_SW,
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/* This should always be the last element */
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RMNET_MAP_CHECKSUM_ENUM_LENGTH
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};
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enum rmnet_map_commands_e {
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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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/* 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_agg_state_e {
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RMNET_MAP_AGG_IDLE,
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RMNET_MAP_TXFER_SCHEDULED
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};
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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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uint8_t rmnet_map_demultiplex(struct sk_buff *skb);
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struct sk_buff *rmnet_map_deaggregate(struct sk_buff *skb,
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struct rmnet_phys_ep_config *config);
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struct rmnet_map_header_s *rmnet_map_add_map_header(struct sk_buff *skb,
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int hdrlen, int pad);
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rx_handler_result_t rmnet_map_command(struct sk_buff *skb,
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struct rmnet_phys_ep_config *config);
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void rmnet_map_aggregate(struct sk_buff *skb,
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struct rmnet_phys_ep_config *config);
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int rmnet_map_checksum_downlink_packet(struct sk_buff *skb);
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int rmnet_map_checksum_uplink_packet(struct sk_buff *skb,
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struct net_device *orig_dev,
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u32 egress_data_format);
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int rmnet_ul_aggregation_skip(struct sk_buff *skb, int offset);
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enum hrtimer_restart rmnet_map_flush_packet_queue(struct hrtimer *t);
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#endif /* _RMNET_MAP_H_ */
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