drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /* Copyright (c) 2013-2018, 2021, The Linux Foundation. All rights reserved.
   3  */
   4
   5 #ifndef _RMNET_MAP_H_
   6 #define _RMNET_MAP_H_
   7 #include <linux/if_rmnet.h>
   8
   9 struct rmnet_map_control_command {
  10         u8  command_name;
  11         u8  cmd_type:2;
  12         u8  reserved:6;
  13         u16 reserved2;
  14         u32 transaction_id;
  15         union {
  16                 struct {
  17                         u16 ip_family:2;
  18                         u16 reserved:14;
  19                         __be16 flow_control_seq_num;
  20                         __be32 qos_id;
  21                 } flow_control;
  22                 u8 data[0];
  23         };
  24 }  __aligned(1);
  25
  26 enum rmnet_map_commands {
  27         RMNET_MAP_COMMAND_NONE,
  28         RMNET_MAP_COMMAND_FLOW_DISABLE,
  29         RMNET_MAP_COMMAND_FLOW_ENABLE,
  30         /* These should always be the last 2 elements */
  31         RMNET_MAP_COMMAND_UNKNOWN,
  32         RMNET_MAP_COMMAND_ENUM_LENGTH
  33 };
  34
  35 #define RMNET_MAP_COMMAND_REQUEST     0
  36 #define RMNET_MAP_COMMAND_ACK         1
  37 #define RMNET_MAP_COMMAND_UNSUPPORTED 2
  38 #define RMNET_MAP_COMMAND_INVALID     3
  39
  40 #define RMNET_MAP_NO_PAD_BYTES        0
  41 #define RMNET_MAP_ADD_PAD_BYTES       1
  42
  43 struct sk_buff *rmnet_map_deaggregate(struct sk_buff *skb,
  44                                       struct rmnet_port *port);
  45 struct rmnet_map_header *rmnet_map_add_map_header(struct sk_buff *skb,
  46                                                   int hdrlen,
  47                                                   struct rmnet_port *port,
  48                                                   int pad);
  49 void rmnet_map_command(struct sk_buff *skb, struct rmnet_port *port);
  50 int rmnet_map_checksum_downlink_packet(struct sk_buff *skb, u16 len);
  51 void rmnet_map_checksum_uplink_packet(struct sk_buff *skb,
  52                                       struct rmnet_port *port,
  53                                       struct net_device *orig_dev,
  54                                       int csum_type);
  55 int rmnet_map_process_next_hdr_packet(struct sk_buff *skb, u16 len);
  56
  57 #endif /* _RMNET_MAP_H_ */