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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_ */