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 
16 struct 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  */
25 struct 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 
35 extern struct rtnl_link_ops rmnet_link_ops;
36 
37 struct 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 
45 struct rmnet_pcpu_stats {
46 	struct rmnet_vnd_stats stats;
47 	struct u64_stats_sync syncp;
48 };
49 
50 struct 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 
64 struct 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 
72 struct rmnet_port *rmnet_get_port_rcu(struct net_device *real_dev);
73 struct rmnet_endpoint *rmnet_get_endpoint(struct rmnet_port *port, u8 mux_id);
74 int rmnet_add_bridge(struct net_device *rmnet_dev,
75 		     struct net_device *slave_dev,
76 		     struct netlink_ext_ack *extack);
77 int rmnet_del_bridge(struct net_device *rmnet_dev,
78 		     struct net_device *slave_dev);
79 struct rmnet_port*
80 rmnet_get_port_rtnl(const struct net_device *real_dev);
81 #endif /* _RMNET_CONFIG_H_ */
82