1/* SPDX-License-Identifier: GPL-2.0-only */
2/* Copyright (c) 2013-2014, 2016-2018 The Linux Foundation. All rights reserved.
3 *
4 * RMNET Data configuration engine
5 */
6
7#include <linux/skbuff.h>
8#include <net/gro_cells.h>
9
10#ifndef _RMNET_CONFIG_H_
11#define _RMNET_CONFIG_H_
12
13#define RMNET_MAX_LOGICAL_EP 255
14
15struct rmnet_endpoint {
16	u8 mux_id;
17	struct net_device *egress_dev;
18	struct hlist_node hlnode;
19};
20
21/* One instance of this structure is instantiated for each real_dev associated
22 * with rmnet.
23 */
24struct rmnet_port {
25	struct net_device *dev;
26	u32 data_format;
27	u8 nr_rmnet_devs;
28	u8 rmnet_mode;
29	struct hlist_head muxed_ep[RMNET_MAX_LOGICAL_EP];
30	struct net_device *bridge_ep;
31	struct net_device *rmnet_dev;
32};
33
34extern struct rtnl_link_ops rmnet_link_ops;
35
36struct rmnet_vnd_stats {
37	u64 rx_pkts;
38	u64 rx_bytes;
39	u64 tx_pkts;
40	u64 tx_bytes;
41	u32 tx_drops;
42};
43
44struct rmnet_pcpu_stats {
45	struct rmnet_vnd_stats stats;
46	struct u64_stats_sync syncp;
47};
48
49struct rmnet_priv_stats {
50	u64 csum_ok;
51	u64 csum_valid_unset;
52	u64 csum_validation_failed;
53	u64 csum_err_bad_buffer;
54	u64 csum_err_invalid_ip_version;
55	u64 csum_err_invalid_transport;
56	u64 csum_fragmented_pkt;
57	u64 csum_skipped;
58	u64 csum_sw;
59};
60
61struct rmnet_priv {
62	u8 mux_id;
63	struct net_device *real_dev;
64	struct rmnet_pcpu_stats __percpu *pcpu_stats;
65	struct gro_cells gro_cells;
66	struct rmnet_priv_stats stats;
67};
68
69struct rmnet_port *rmnet_get_port_rcu(struct net_device *real_dev);
70struct rmnet_endpoint *rmnet_get_endpoint(struct rmnet_port *port, u8 mux_id);
71int rmnet_add_bridge(struct net_device *rmnet_dev,
72		     struct net_device *slave_dev,
73		     struct netlink_ext_ack *extack);
74int rmnet_del_bridge(struct net_device *rmnet_dev,
75		     struct net_device *slave_dev);
76struct rmnet_port*
77rmnet_get_port_rtnl(const struct net_device *real_dev);
78#endif /* _RMNET_CONFIG_H_ */
79