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 <net/gro_cells.h>
10
11#ifndef _RMNET_CONFIG_H_
12#define _RMNET_CONFIG_H_
13
14#define RMNET_MAX_LOGICAL_EP 255
15
16struct rmnet_endpoint {
17	u8 mux_id;
18	struct net_device *egress_dev;
19	struct hlist_node hlnode;
20};
21
22/* One instance of this structure is instantiated for each real_dev associated
23 * with rmnet.
24 */
25struct rmnet_port {
26	struct net_device *dev;
27	u32 data_format;
28	u8 nr_rmnet_devs;
29	u8 rmnet_mode;
30	struct hlist_head muxed_ep[RMNET_MAX_LOGICAL_EP];
31	struct net_device *bridge_ep;
32	struct net_device *rmnet_dev;
33};
34
35extern struct rtnl_link_ops rmnet_link_ops;
36
37struct rmnet_vnd_stats {
38	u64 rx_pkts;
39	u64 rx_bytes;
40	u64 tx_pkts;
41	u64 tx_bytes;
42	u32 tx_drops;
43};
44
45struct rmnet_pcpu_stats {
46	struct rmnet_vnd_stats stats;
47	struct u64_stats_sync syncp;
48};
49
50struct rmnet_priv_stats {
51	u64 csum_ok;
52	u64 csum_ip4_header_bad;
53	u64 csum_valid_unset;
54	u64 csum_validation_failed;
55	u64 csum_err_bad_buffer;
56	u64 csum_err_invalid_ip_version;
57	u64 csum_err_invalid_transport;
58	u64 csum_fragmented_pkt;
59	u64 csum_skipped;
60	u64 csum_sw;
61	u64 csum_hw;
62};
63
64struct rmnet_priv {
65	u8 mux_id;
66	struct net_device *real_dev;
67	struct rmnet_pcpu_stats __percpu *pcpu_stats;
68	struct gro_cells gro_cells;
69	struct rmnet_priv_stats stats;
70};
71
72struct rmnet_port *rmnet_get_port_rcu(struct net_device *real_dev);
73struct rmnet_endpoint *rmnet_get_endpoint(struct rmnet_port *port, u8 mux_id);
74int rmnet_add_bridge(struct net_device *rmnet_dev,
75		     struct net_device *slave_dev,
76		     struct netlink_ext_ack *extack);
77int rmnet_del_bridge(struct net_device *rmnet_dev,
78		     struct net_device *slave_dev);
79struct rmnet_port*
80rmnet_get_port_rtnl(const struct net_device *real_dev);
81#endif /* _RMNET_CONFIG_H_ */