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
16struct atmmpc_ioc {
17        int dev_num;
18        __be32 ipaddr;              /* the IP address of the shortcut    */
19        int type;                     /* ingress or egress                 */
20};
21
22typedef 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
32typedef 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
43struct 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
52struct 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
64struct 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_ */
128