1 /* Copyright (c) 2013-2014, 2016-2017 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 
16 #include <linux/skbuff.h>
17 #include <net/gro_cells.h>
18 
19 #ifndef _RMNET_CONFIG_H_
20 #define _RMNET_CONFIG_H_
21 
22 #define RMNET_MAX_LOGICAL_EP 255
23 
24 struct rmnet_endpoint {
25 	u8 mux_id;
26 	struct net_device *egress_dev;
27 	struct hlist_node hlnode;
28 };
29 
30 /* One instance of this structure is instantiated for each real_dev associated
31  * with rmnet.
32  */
33 struct rmnet_port {
34 	struct net_device *dev;
35 	u32 ingress_data_format;
36 	u32 egress_data_format;
37 	u8 nr_rmnet_devs;
38 	u8 rmnet_mode;
39 	struct hlist_head muxed_ep[RMNET_MAX_LOGICAL_EP];
40 	struct net_device *bridge_ep;
41 };
42 
43 extern struct rtnl_link_ops rmnet_link_ops;
44 
45 struct rmnet_vnd_stats {
46 	u64 rx_pkts;
47 	u64 rx_bytes;
48 	u64 tx_pkts;
49 	u64 tx_bytes;
50 	u32 tx_drops;
51 };
52 
53 struct rmnet_pcpu_stats {
54 	struct rmnet_vnd_stats stats;
55 	struct u64_stats_sync syncp;
56 };
57 
58 struct rmnet_priv {
59 	u8 mux_id;
60 	struct net_device *real_dev;
61 	struct rmnet_pcpu_stats __percpu *pcpu_stats;
62 	struct gro_cells gro_cells;
63 };
64 
65 struct rmnet_port *rmnet_get_port(struct net_device *real_dev);
66 struct rmnet_endpoint *rmnet_get_endpoint(struct rmnet_port *port, u8 mux_id);
67 int rmnet_add_bridge(struct net_device *rmnet_dev,
68 		     struct net_device *slave_dev,
69 		     struct netlink_ext_ack *extack);
70 int rmnet_del_bridge(struct net_device *rmnet_dev,
71 		     struct net_device *slave_dev);
72 #endif /* _RMNET_CONFIG_H_ */
73