/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

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#ifndef _ATMMPC_H_

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#define _ATMMPC_H_

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#include <linux/atmapi.h>

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#include <linux/atmioc.h>

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#include <linux/atm.h>

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#include <linux/types.h>

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#define ATMMPC_CTRL _IO('a', ATMIOC_MPOA)

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#define ATMMPC_DATA _IO('a', ATMIOC_MPOA+1)

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#define MPC_SOCKET_INGRESS 1

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#define MPC_SOCKET_EGRESS 2

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struct atmmpc_ioc {

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int dev_num;

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__be32 ipaddr; /* the IP address of the shortcut */

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int type; /* ingress or egress */

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};

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typedef struct in_ctrl_info {

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__u8 Last_NHRP_CIE_code;

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__u8 Last_Q2931_cause_value;

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__u8 eg_MPC_ATM_addr[ATM_ESA_LEN];

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__be32 tag;

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__be32 in_dst_ip; /* IP address this ingress MPC sends packets to */

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__u16 holding_time;

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__u32 request_id;

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} in_ctrl_info;

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typedef struct eg_ctrl_info {

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__u8 DLL_header[256];

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__u8 DH_length;

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__be32 cache_id;

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__be32 tag;

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__be32 mps_ip;

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__be32 eg_dst_ip; /* IP address to which ingress MPC sends packets */

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__u8 in_MPC_data_ATM_addr[ATM_ESA_LEN];

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__u16 holding_time;

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} eg_ctrl_info;

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struct mpc_parameters {

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__u16 mpc_p1; /* Shortcut-Setup Frame Count */

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__u16 mpc_p2; /* Shortcut-Setup Frame Time */

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__u8 mpc_p3[8]; /* Flow-detection Protocols */

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__u16 mpc_p4; /* MPC Initial Retry Time */

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__u16 mpc_p5; /* MPC Retry Time Maximum */

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__u16 mpc_p6; /* Hold Down Time */

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} ;

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struct k_message {

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__u16 type;

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__be32 ip_mask;

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__u8 MPS_ctrl[ATM_ESA_LEN];

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union {

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in_ctrl_info in_info;

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eg_ctrl_info eg_info;

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struct mpc_parameters params;

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} content;

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struct atm_qos qos;

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} __ATM_API_ALIGN;

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struct llc_snap_hdr {

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/* RFC 1483 LLC/SNAP encapsulation for routed IP PDUs */

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__u8 dsap; /* Destination Service Access Point (0xAA) */

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__u8 ssap; /* Source Service Access Point (0xAA) */

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__u8 ui; /* Unnumbered Information (0x03) */

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__u8 org[3]; /* Organizational identification (0x000000) */

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__u8 type[2]; /* Ether type (for IP) (0x0800) */

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};

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/* TLVs this MPC recognizes */

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#define TLV_MPOA_DEVICE_TYPE 0x00a03e2a

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/* MPOA device types in MPOA Device Type TLV */

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#define NON_MPOA 0

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#define MPS 1

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#define MPC 2

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#define MPS_AND_MPC 3

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/* MPC parameter defaults */

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#define MPC_P1 10 /* Shortcut-Setup Frame Count */

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#define MPC_P2 1 /* Shortcut-Setup Frame Time */

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#define MPC_P3 0 /* Flow-detection Protocols */

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#define MPC_P4 5 /* MPC Initial Retry Time */

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#define MPC_P5 40 /* MPC Retry Time Maximum */

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#define MPC_P6 160 /* Hold Down Time */

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#define HOLDING_TIME_DEFAULT 1200 /* same as MPS-p7 */

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/* MPC constants */

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#define MPC_C1 2 /* Retry Time Multiplier */

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#define MPC_C2 60 /* Initial Keep-Alive Lifetime */

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/* Message types - to MPOA daemon */

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#define SND_MPOA_RES_RQST 201

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#define SET_MPS_CTRL_ADDR 202

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#define SND_MPOA_RES_RTRY 203 /* Different type in a retry due to req id */

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#define STOP_KEEP_ALIVE_SM 204

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#define EGRESS_ENTRY_REMOVED 205

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#define SND_EGRESS_PURGE 206

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#define DIE 207 /* tell the daemon to exit() */

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#define DATA_PLANE_PURGE 208 /* Data plane purge because of egress cache hit miss or dead MPS */

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#define OPEN_INGRESS_SVC 209

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/* Message types - from MPOA daemon */

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#define MPOA_TRIGGER_RCVD 101

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#define MPOA_RES_REPLY_RCVD 102

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#define INGRESS_PURGE_RCVD 103

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#define EGRESS_PURGE_RCVD 104

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#define MPS_DEATH 105

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#define CACHE_IMPOS_RCVD 106

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#define SET_MPC_CTRL_ADDR 107 /* Our MPC's control ATM address */

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#define SET_MPS_MAC_ADDR 108

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#define CLEAN_UP_AND_EXIT 109

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#define SET_MPC_PARAMS 110 /* MPC configuration parameters */

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/* Message types - bidirectional */

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#define RELOAD 301 /* kill -HUP the daemon for reload */

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#endif /* _ATMMPC_H_ */

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