include/uapi/linux/atmmpc.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef _ATMMPC_H_
   3 #define _ATMMPC_H_
   4
   5 #include <linux/atmapi.h>
   6 #include <linux/atmioc.h>
   7 #include <linux/atm.h>
   8 #include <linux/types.h>
   9
  10 #define ATMMPC_CTRL _IO('a', ATMIOC_MPOA)
  11 #define ATMMPC_DATA _IO('a', ATMIOC_MPOA+1)
  12
  13 #define MPC_SOCKET_INGRESS 1
  14 #define MPC_SOCKET_EGRESS  2
  15
  16 struct atmmpc_ioc {
  17         int dev_num;
  18         __be32 ipaddr;              /* the IP address of the shortcut    */
  19         int type;                     /* ingress or egress                 */
  20 };
  21
  22 typedef struct in_ctrl_info {
  23         __u8   Last_NHRP_CIE_code;
  24         __u8   Last_Q2931_cause_value;
  25         __u8   eg_MPC_ATM_addr[ATM_ESA_LEN];
  26         __be32  tag;
  27         __be32  in_dst_ip;      /* IP address this ingress MPC sends packets to */
  28         __u16  holding_time;
  29         __u32  request_id;
  30 } in_ctrl_info;
  31
  32 typedef struct eg_ctrl_info {
  33         __u8   DLL_header[256];
  34         __u8   DH_length;
  35         __be32  cache_id;
  36         __be32  tag;
  37         __be32  mps_ip;
  38         __be32  eg_dst_ip;      /* IP address to which ingress MPC sends packets */
  39         __u8   in_MPC_data_ATM_addr[ATM_ESA_LEN];
  40         __u16  holding_time;
  41 } eg_ctrl_info;
  42
  43 struct mpc_parameters {
  44         __u16 mpc_p1;   /* Shortcut-Setup Frame Count    */
  45         __u16 mpc_p2;   /* Shortcut-Setup Frame Time     */
  46         __u8 mpc_p3[8]; /* Flow-detection Protocols      */
  47         __u16 mpc_p4;   /* MPC Initial Retry Time        */
  48         __u16 mpc_p5;   /* MPC Retry Time Maximum        */
  49         __u16 mpc_p6;   /* Hold Down Time                */
  50 } ;
  51
  52 struct k_message {
  53         __u16 type;
  54         __be32 ip_mask;
  55         __u8  MPS_ctrl[ATM_ESA_LEN];
  56         union {
  57                 in_ctrl_info in_info;
  58                 eg_ctrl_info eg_info;
  59                 struct mpc_parameters params;
  60         } content;
  61         struct atm_qos qos;
  62 } __ATM_API_ALIGN;
  63
  64 struct llc_snap_hdr {
  65         /* RFC 1483 LLC/SNAP encapsulation for routed IP PDUs */
  66         __u8  dsap;    /* Destination Service Access Point (0xAA)     */
  67         __u8  ssap;    /* Source Service Access Point      (0xAA)     */
  68         __u8  ui;      /* Unnumbered Information           (0x03)     */
  69         __u8  org[3];  /* Organizational identification    (0x000000) */
  70         __u8  type[2]; /* Ether type (for IP)              (0x0800)   */
  71 };
  72
  73 /* TLVs this MPC recognizes */
  74 #define TLV_MPOA_DEVICE_TYPE         0x00a03e2a
  75
  76 /* MPOA device types in MPOA Device Type TLV */
  77 #define NON_MPOA    0
  78 #define MPS         1
  79 #define MPC         2
  80 #define MPS_AND_MPC 3
  81
  82
  83 /* MPC parameter defaults */
  84
  85 #define MPC_P1 10  /* Shortcut-Setup Frame Count  */
  86 #define MPC_P2 1   /* Shortcut-Setup Frame Time   */
  87 #define MPC_P3 0   /* Flow-detection Protocols    */
  88 #define MPC_P4 5   /* MPC Initial Retry Time      */
  89 #define MPC_P5 40  /* MPC Retry Time Maximum      */
  90 #define MPC_P6 160 /* Hold Down Time              */
  91 #define HOLDING_TIME_DEFAULT 1200 /* same as MPS-p7 */
  92
  93 /* MPC constants */
  94
  95 #define MPC_C1 2   /* Retry Time Multiplier       */
  96 #define MPC_C2 60  /* Initial Keep-Alive Lifetime */
  97
  98 /* Message types - to MPOA daemon */
  99
 100 #define SND_MPOA_RES_RQST    201
 101 #define SET_MPS_CTRL_ADDR    202
 102 #define SND_MPOA_RES_RTRY    203 /* Different type in a retry due to req id         */
 103 #define STOP_KEEP_ALIVE_SM   204
 104 #define EGRESS_ENTRY_REMOVED 205
 105 #define SND_EGRESS_PURGE     206
 106 #define DIE                  207 /* tell the daemon to exit()                       */
 107 #define DATA_PLANE_PURGE     208 /* Data plane purge because of egress cache hit miss or dead MPS */
 108 #define OPEN_INGRESS_SVC     209
 109
 110 /* Message types - from MPOA daemon */
 111
 112 #define MPOA_TRIGGER_RCVD     101
 113 #define MPOA_RES_REPLY_RCVD   102
 114 #define INGRESS_PURGE_RCVD    103
 115 #define EGRESS_PURGE_RCVD     104
 116 #define MPS_DEATH             105
 117 #define CACHE_IMPOS_RCVD      106
 118 #define SET_MPC_CTRL_ADDR     107 /* Our MPC's control ATM address   */
 119 #define SET_MPS_MAC_ADDR      108
 120 #define CLEAN_UP_AND_EXIT     109
 121 #define SET_MPC_PARAMS        110 /* MPC configuration parameters    */
 122
 123 /* Message types - bidirectional */
 124
 125 #define RELOAD                301 /* kill -HUP the daemon for reload */
 126
 127 #endif /* _ATMMPC_H_ */