| Subash Abhinov Kasiviswanathan | 2139ce8a | 2016-10-14 11:01:48 -0600 | [diff] [blame] | 1 | /* Copyright (c) 2013-2014, 2016 The Linux Foundation. All rights reserved. |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | * |
| 12 | * RMNET Data configuration engine |
| 13 | */ |
| 14 | |
| 15 | #include <linux/types.h> |
| 16 | #include <linux/time.h> |
| 17 | #include <linux/spinlock.h> |
| 18 | #include <net/rmnet_config.h> |
| 19 | |
| 20 | #ifndef _RMNET_DATA_CONFIG_H_ |
| 21 | #define _RMNET_DATA_CONFIG_H_ |
| 22 | |
| 23 | #define RMNET_DATA_MAX_LOGICAL_EP 256 |
| 24 | |
| 25 | /** |
| 26 | * struct rmnet_logical_ep_conf_s - Logical end-point configuration |
| 27 | * |
| 28 | * @refcount: Reference count for this endpoint. 0 signifies the endpoint is not |
| 29 | * configured for use |
| 30 | * @rmnet_mode: Specifies how the traffic should be finally delivered. Possible |
| 31 | * options are available in enum rmnet_config_endpoint_modes_e |
| 32 | * @mux_id: Virtual channel ID used by MAP protocol |
| 33 | * @egress_dev: Next device to deliver the packet to. Exact usage of this |
| 34 | * parmeter depends on the rmnet_mode |
| 35 | */ |
| 36 | struct rmnet_logical_ep_conf_s { |
| 37 | u8 refcount; |
| 38 | u8 rmnet_mode; |
| 39 | u8 mux_id; |
| 40 | struct timespec flush_time; |
| 41 | struct net_device *egress_dev; |
| 42 | }; |
| 43 | |
| 44 | /** |
| 45 | * struct rmnet_phys_ep_conf_s - Physical endpoint configuration |
| 46 | * One instance of this structure is instantiated for each net_device associated |
| 47 | * with rmnet_data. |
| 48 | * |
| 49 | * @dev: The device which is associated with rmnet_data. Corresponds to this |
| 50 | * specific instance of rmnet_phys_ep_conf_s |
| 51 | * @local_ep: Default non-muxed endpoint. Used for non-MAP protocols/formats |
| 52 | * @muxed_ep: All multiplexed logical endpoints associated with this device |
| 53 | * @ingress_data_format: RMNET_INGRESS_FORMAT_* flags from rmnet_data.h |
| 54 | * @egress_data_format: RMNET_EGRESS_FORMAT_* flags from rmnet_data.h |
| 55 | * |
| 56 | * @egress_agg_size: Maximum size (bytes) of data which should be aggregated |
| 57 | * @egress_agg_count: Maximum count (packets) of data which should be aggregated |
| 58 | * Smaller of the two parameters above are chosen for |
| 59 | * aggregation |
| 60 | * @tail_spacing: Guaranteed padding (bytes) when de-aggregating ingress frames |
| 61 | * @agg_time: Wall clock time when aggregated frame was created |
| 62 | * @agg_last: Last time the aggregation routing was invoked |
| 63 | */ |
| 64 | struct rmnet_phys_ep_config { |
| 65 | struct net_device *dev; |
| 66 | struct rmnet_logical_ep_conf_s local_ep; |
| 67 | struct rmnet_logical_ep_conf_s muxed_ep[RMNET_DATA_MAX_LOGICAL_EP]; |
| 68 | u32 ingress_data_format; |
| 69 | u32 egress_data_format; |
| 70 | |
| 71 | /* MAP specific */ |
| 72 | u16 egress_agg_size; |
| 73 | u16 egress_agg_count; |
| 74 | u8 tail_spacing; |
| 75 | /* MAP aggregation state machine |
| 76 | * - This is not sctrictly configuration and is updated at runtime |
| 77 | * Make sure all of these are protected by the agg_lock |
| 78 | */ |
| 79 | spinlock_t agg_lock; |
| 80 | struct sk_buff *agg_skb; |
| 81 | u8 agg_state; |
| 82 | u8 agg_count; |
| 83 | struct timespec agg_time; |
| 84 | struct timespec agg_last; |
| 85 | }; |
| 86 | |
| 87 | int rmnet_config_init(void); |
| 88 | void rmnet_config_exit(void); |
| 89 | |
| 90 | int rmnet_unassociate_network_device(struct net_device *dev); |
| 91 | int rmnet_set_ingress_data_format(struct net_device *dev, |
| 92 | u32 ingress_data_format, |
| 93 | u8 tail_spacing); |
| 94 | int rmnet_set_egress_data_format(struct net_device *dev, |
| 95 | u32 egress_data_format, |
| 96 | u16 agg_size, |
| 97 | u16 agg_count); |
| 98 | int rmnet_associate_network_device(struct net_device *dev); |
| 99 | int _rmnet_set_logical_endpoint_config |
| 100 | (struct net_device *dev, int config_id, |
| 101 | struct rmnet_logical_ep_conf_s *epconfig); |
| 102 | int rmnet_set_logical_endpoint_config(struct net_device *dev, |
| 103 | int config_id, |
| 104 | u8 rmnet_mode, |
| 105 | struct net_device *egress_dev); |
| 106 | int _rmnet_unset_logical_endpoint_config(struct net_device *dev, |
| 107 | int config_id); |
| 108 | int rmnet_unset_logical_endpoint_config(struct net_device *dev, |
| 109 | int config_id); |
| 110 | int _rmnet_get_logical_endpoint_config |
| 111 | (struct net_device *dev, int config_id, |
| 112 | struct rmnet_logical_ep_conf_s *epconfig); |
| 113 | int rmnet_get_logical_endpoint_config(struct net_device *dev, |
| 114 | int config_id, |
| 115 | u8 *rmnet_mode, |
| 116 | u8 *egress_dev_name, |
| 117 | size_t egress_dev_name_size); |
| 118 | void rmnet_config_netlink_msg_handler (struct sk_buff *skb); |
| 119 | int rmnet_config_notify_cb(struct notifier_block *nb, |
| 120 | unsigned long event, void *data); |
| 121 | int rmnet_create_vnd(int id); |
| 122 | int rmnet_create_vnd_prefix(int id, const char *name); |
| 123 | int rmnet_free_vnd(int id); |
| 124 | |
| 125 | struct rmnet_phys_ep_config *_rmnet_get_phys_ep_config |
| 126 | (struct net_device *dev); |
| 127 | |
| 128 | #endif /* _RMNET_DATA_CONFIG_H_ */ |