126 lines
4.6 KiB
C
126 lines
4.6 KiB
C
/*
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* Copyright (c) 2013-2014, 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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* RMNET Data configuration engine
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*
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*/
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#include <linux/types.h>
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#include <linux/time.h>
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#include <linux/spinlock.h>
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#ifndef _RMNET_DATA_CONFIG_H_
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#define _RMNET_DATA_CONFIG_H_
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#define RMNET_DATA_MAX_LOGICAL_EP 256
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/**
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* struct rmnet_logical_ep_conf_s - Logical end-point configuration
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*
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* @refcount: Reference count for this endpoint. 0 signifies the endpoint is not
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* configured for use
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* @rmnet_mode: Specifies how the traffic should be finally delivered. Possible
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* options are available in enum rmnet_config_endpoint_modes_e
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* @mux_id: Virtual channel ID used by MAP protocol
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* @egress_dev: Next device to deliver the packet to. Exact usage of this
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* parmeter depends on the rmnet_mode
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*/
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struct rmnet_logical_ep_conf_s {
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uint8_t refcount;
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uint8_t rmnet_mode;
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uint8_t mux_id;
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struct net_device *egress_dev;
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};
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/**
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* struct rmnet_phys_ep_conf_s - Physical endpoint configuration
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* One instance of this structure is instantiated for each net_device associated
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* with rmnet_data.
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*
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* @dev: The device which is associated with rmnet_data. Corresponds to this
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* specific instance of rmnet_phys_ep_conf_s
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* @local_ep: Default non-muxed endpoint. Used for non-MAP protocols/formats
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* @muxed_ep: All multiplexed logical endpoints associated with this device
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* @ingress_data_format: RMNET_INGRESS_FORMAT_* flags from rmnet_data.h
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* @egress_data_format: RMNET_EGRESS_FORMAT_* flags from rmnet_data.h
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*
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* @egress_agg_size: Maximum size (bytes) of data which should be aggregated
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* @egress_agg_count: Maximum count (packets) of data which should be aggregated
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* Smaller of the two parameters above are chosen for
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* aggregation
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* @tail_spacing: Guaranteed padding (bytes) when de-aggregating ingress frames
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* @agg_time: Wall clock time when aggregated frame was created
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* @agg_last: Last time the aggregation routing was invoked
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*/
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struct rmnet_phys_ep_conf_s {
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struct net_device *dev;
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struct rmnet_logical_ep_conf_s local_ep;
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struct rmnet_logical_ep_conf_s muxed_ep[RMNET_DATA_MAX_LOGICAL_EP];
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uint32_t ingress_data_format;
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uint32_t egress_data_format;
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/* MAP specific */
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uint16_t egress_agg_size;
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uint16_t egress_agg_count;
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uint8_t tail_spacing;
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/* MAP aggregation state machine
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* - This is not sctrictly configuration and is updated at runtime
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* Make sure all of these are protected by the agg_lock
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*/
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spinlock_t agg_lock;
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struct sk_buff *agg_skb;
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uint8_t agg_state;
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uint8_t agg_count;
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struct timespec agg_time;
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struct timespec agg_last;
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};
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int rmnet_config_init(void);
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void rmnet_config_exit(void);
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int rmnet_unassociate_network_device(struct net_device *dev);
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int rmnet_set_ingress_data_format(struct net_device *dev,
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uint32_t ingress_data_format,
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uint8_t tail_spacing);
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int rmnet_set_egress_data_format(struct net_device *dev,
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uint32_t egress_data_format,
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uint16_t agg_size,
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uint16_t agg_count);
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int rmnet_associate_network_device(struct net_device *dev);
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int _rmnet_set_logical_endpoint_config(struct net_device *dev,
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int config_id,
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struct rmnet_logical_ep_conf_s *epconfig);
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int rmnet_set_logical_endpoint_config(struct net_device *dev,
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int config_id,
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uint8_t rmnet_mode,
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struct net_device *egress_dev);
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int _rmnet_unset_logical_endpoint_config(struct net_device *dev,
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int config_id);
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int rmnet_unset_logical_endpoint_config(struct net_device *dev,
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int config_id);
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int _rmnet_get_logical_endpoint_config(struct net_device *dev,
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int config_id,
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struct rmnet_logical_ep_conf_s *epconfig);
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int rmnet_get_logical_endpoint_config(struct net_device *dev,
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int config_id,
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uint8_t *rmnet_mode,
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uint8_t *egress_dev_name,
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size_t egress_dev_name_size);
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void rmnet_config_netlink_msg_handler (struct sk_buff *skb);
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int rmnet_config_notify_cb(struct notifier_block *nb,
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unsigned long event, void *data);
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int rmnet_create_vnd(int id);
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int rmnet_create_vnd_prefix(int id, const char *name);
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int rmnet_free_vnd(int id);
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#endif /* _RMNET_DATA_CONFIG_H_ */
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