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_ */
128