1/* SPDX-License-Identifier: GPL-2.0-only */
2/* Copyright (c) 2013-2014, 2016-2018, 2021 The Linux Foundation.
3 * All rights reserved.
4 *
5 * RMNET Data configuration engine
6 */
7
8#include <linux/skbuff.h>
9#include <linux/time.h>
10#include <net/gro_cells.h>
11
12#ifndef _RMNET_CONFIG_H_
13#define _RMNET_CONFIG_H_
14
15#define RMNET_MAX_LOGICAL_EP 255
16
17struct rmnet_endpoint {
18	u8 mux_id;
19	struct net_device *egress_dev;
20	struct hlist_node hlnode;
21};
22
23struct rmnet_egress_agg_params {
24	u32 bytes;
25	u32 count;
26	u64 time_nsec;
27};
28
29/* One instance of this structure is instantiated for each real_dev associated
30 * with rmnet.
31 */
32struct rmnet_port {
33	struct net_device *dev;
34	u32 data_format;
35	u8 nr_rmnet_devs;
36	u8 rmnet_mode;
37	struct hlist_head muxed_ep[RMNET_MAX_LOGICAL_EP];
38	struct net_device *bridge_ep;
39	struct net_device *rmnet_dev;
40
41	/* Egress aggregation information */
42	struct rmnet_egress_agg_params egress_agg_params;
43	/* Protect aggregation related elements */
44	spinlock_t agg_lock;
45	struct sk_buff *skbagg_head;
46	struct sk_buff *skbagg_tail;
47	int agg_state;
48	u8 agg_count;
49	struct timespec64 agg_time;
50	struct timespec64 agg_last;
51	struct hrtimer hrtimer;
52	struct work_struct agg_wq;
53};
54
55extern struct rtnl_link_ops rmnet_link_ops;
56
57struct rmnet_vnd_stats {
58	u64 rx_pkts;
59	u64 rx_bytes;
60	u64 tx_pkts;
61	u64 tx_bytes;
62	u32 tx_drops;
63};
64
65struct rmnet_pcpu_stats {
66	struct rmnet_vnd_stats stats;
67	struct u64_stats_sync syncp;
68};
69
70struct rmnet_priv_stats {
71	u64 csum_ok;
72	u64 csum_ip4_header_bad;
73	u64 csum_valid_unset;
74	u64 csum_validation_failed;
75	u64 csum_err_bad_buffer;
76	u64 csum_err_invalid_ip_version;
77	u64 csum_err_invalid_transport;
78	u64 csum_fragmented_pkt;
79	u64 csum_skipped;
80	u64 csum_sw;
81	u64 csum_hw;
82};
83
84struct rmnet_priv {
85	u8 mux_id;
86	struct net_device *real_dev;
87	struct rmnet_pcpu_stats __percpu *pcpu_stats;
88	struct gro_cells gro_cells;
89	struct rmnet_priv_stats stats;
90};
91
92struct rmnet_port *rmnet_get_port_rcu(struct net_device *real_dev);
93struct rmnet_endpoint *rmnet_get_endpoint(struct rmnet_port *port, u8 mux_id);
94int rmnet_add_bridge(struct net_device *rmnet_dev,
95		     struct net_device *slave_dev,
96		     struct netlink_ext_ack *extack);
97int rmnet_del_bridge(struct net_device *rmnet_dev,
98		     struct net_device *slave_dev);
99struct rmnet_port*
100rmnet_get_port_rtnl(const struct net_device *real_dev);
101#endif /* _RMNET_CONFIG_H_ */
102