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/* Copyright (c) 2013-2014, 2016-2017 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
* GNU General Public License for more details.
* RMNET Data configuration engine
#include <linux/types.h>
#include <linux/time.h>
#include <linux/spinlock.h>
#include <net/rmnet_config.h>
#include <linux/hrtimer.h>
* struct rmnet_logical_ep_conf_s - Logical end-point configuration
* @refcount: Reference count for this endpoint. 0 signifies the endpoint is not
* configured for use
* @rmnet_mode: Specifies how the traffic should be finally delivered. Possible
* options are available in enum rmnet_config_endpoint_modes_e
* @mux_id: Virtual channel ID used by MAP protocol
* @egress_dev: Next device to deliver the packet to. Exact usage of this
* parmeter depends on the rmnet_mode
struct rmnet_logical_ep_conf_s {
struct net_device *egress_dev;
struct timespec last_flush_time;
long curr_time_limit;
unsigned int flush_byte_count;
unsigned int curr_byte_threshold;
u8 refcount;
u8 rmnet_mode;
u8 mux_id;
* struct rmnet_phys_ep_conf_s - Physical endpoint configuration
* One instance of this structure is instantiated for each net_device associated
* with rmnet_data.
* @dev: The device which is associated with rmnet_data. Corresponds to this
* specific instance of rmnet_phys_ep_conf_s
* @local_ep: Default non-muxed endpoint. Used for non-MAP protocols/formats
* @muxed_ep: All multiplexed logical endpoints associated with this device
* @ingress_data_format: RMNET_INGRESS_FORMAT_* flags from rmnet_data.h
* @egress_data_format: RMNET_EGRESS_FORMAT_* flags from rmnet_data.h
* @egress_agg_size: Maximum size (bytes) of data which should be aggregated
* @egress_agg_count: Maximum count (packets) of data which should be aggregated
* Smaller of the two parameters above are chosen for
* aggregation
* @tail_spacing: Guaranteed padding (bytes) when de-aggregating ingress frames
* @agg_time: Wall clock time when aggregated frame was created
* @agg_last: Last time the aggregation routing was invoked
struct rmnet_phys_ep_config {
struct net_device *dev;
struct rmnet_logical_ep_conf_s local_ep;
struct rmnet_logical_ep_conf_s muxed_ep[RMNET_DATA_MAX_LOGICAL_EP];
u32 ingress_data_format;
u32 egress_data_format;
/* MAP specific */
u16 egress_agg_size;
u16 egress_agg_count;
u8 tail_spacing;
/* MAP aggregation state machine
* - This is not sctrictly configuration and is updated at runtime
* Make sure all of these are protected by the agg_lock
spinlock_t agg_lock;
struct sk_buff *agg_skb;
u8 agg_state;
u8 agg_count;
struct timespec agg_time;
struct timespec agg_last;
struct hrtimer hrtimer;
int rmnet_config_init(void);
void rmnet_config_exit(void);
int rmnet_unassociate_network_device(struct net_device *dev);
int rmnet_set_ingress_data_format(struct net_device *dev,
u32 ingress_data_format,
u8 tail_spacing);
int rmnet_set_egress_data_format(struct net_device *dev,
u32 egress_data_format,
u16 agg_size,
u16 agg_count);
int rmnet_associate_network_device(struct net_device *dev);
int _rmnet_set_logical_endpoint_config
(struct net_device *dev, int config_id,
struct rmnet_logical_ep_conf_s *epconfig);
int rmnet_set_logical_endpoint_config(struct net_device *dev,
int config_id,
u8 rmnet_mode,
struct net_device *egress_dev);
int _rmnet_unset_logical_endpoint_config(struct net_device *dev,
int config_id);
int rmnet_unset_logical_endpoint_config(struct net_device *dev,
int config_id);
int _rmnet_get_logical_endpoint_config
(struct net_device *dev, int config_id,
struct rmnet_logical_ep_conf_s *epconfig);
int rmnet_get_logical_endpoint_config(struct net_device *dev,
int config_id,
u8 *rmnet_mode,
u8 *egress_dev_name,
size_t egress_dev_name_size);
void rmnet_config_netlink_msg_handler (struct sk_buff *skb);
int rmnet_config_notify_cb(struct notifier_block *nb,
unsigned long event, void *data);
int rmnet_create_vnd(int id);
int rmnet_create_vnd_prefix(int id, const char *name);
int rmnet_create_vnd_name(int id, const char *name);
int rmnet_free_vnd(int id);
struct rmnet_phys_ep_config *_rmnet_get_phys_ep_config
(struct net_device *dev);
#endif /* _RMNET_DATA_CONFIG_H_ */