1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2/*
3 * ATM Lan Emulation Daemon driver interface
4 *
5 * Marko Kiiskila <mkiiskila@yahoo.com>
6 */
7
8#ifndef _ATMLEC_H_
9#define _ATMLEC_H_
10
11#include <linux/atmapi.h>
12#include <linux/atmioc.h>
13#include <linux/atm.h>
14#include <linux/if_ether.h>
15#include <linux/types.h>
16
17/* ATM lec daemon control socket */
18#define ATMLEC_CTRL	_IO('a', ATMIOC_LANE)
19#define ATMLEC_DATA	_IO('a', ATMIOC_LANE+1)
20#define ATMLEC_MCAST	_IO('a', ATMIOC_LANE+2)
21
22/* Maximum number of LEC interfaces (tweakable) */
23#define MAX_LEC_ITF 48
24
25typedef enum {
26	l_set_mac_addr,
27	l_del_mac_addr,
28	l_svc_setup,
29	l_addr_delete,
30	l_topology_change,
31	l_flush_complete,
32	l_arp_update,
33	l_narp_req,		/* LANE2 mandates the use of this */
34	l_config,
35	l_flush_tran_id,
36	l_set_lecid,
37	l_arp_xmt,
38	l_rdesc_arp_xmt,
39	l_associate_req,
40	l_should_bridge		/* should we bridge this MAC? */
41} atmlec_msg_type;
42
43#define ATMLEC_MSG_TYPE_MAX l_should_bridge
44
45struct atmlec_config_msg {
46	unsigned int maximum_unknown_frame_count;
47	unsigned int max_unknown_frame_time;
48	unsigned short max_retry_count;
49	unsigned int aging_time;
50	unsigned int forward_delay_time;
51	unsigned int arp_response_time;
52	unsigned int flush_timeout;
53	unsigned int path_switching_delay;
54	unsigned int lane_version;	/* LANE2: 1 for LANEv1, 2 for LANEv2 */
55	int mtu;
56	int is_proxy;
57};
58
59struct atmlec_msg {
60	atmlec_msg_type type;
61	int sizeoftlvs;		/* LANE2: if != 0, tlvs follow */
62	union {
63		struct {
64			unsigned char mac_addr[ETH_ALEN];
65			unsigned char atm_addr[ATM_ESA_LEN];
66			unsigned int flag;	/*
67						 * Topology_change flag,
68						 * remoteflag, permanent flag,
69						 * lecid, transaction id
70						 */
71			unsigned int targetless_le_arp;	/* LANE2 */
72			unsigned int no_source_le_narp;	/* LANE2 */
73		} normal;
74		struct atmlec_config_msg config;
75		struct {
76			__u16 lec_id;				/* requestor lec_id  */
77			__u32 tran_id;				/* transaction id    */
78			unsigned char mac_addr[ETH_ALEN];	/* dst mac addr      */
79			unsigned char atm_addr[ATM_ESA_LEN];	/* reqestor ATM addr */
80		} proxy;	/*
81				 * For mapping LE_ARP requests to responses. Filled by
82				 * zeppelin, returned by kernel. Used only when proxying
83				 */
84	} content;
85} __ATM_API_ALIGN;
86
87struct atmlec_ioc {
88	int dev_num;
89	unsigned char atm_addr[ATM_ESA_LEN];
90	unsigned char receive;	/* 1= receive vcc, 0 = send vcc */
91};
92#endif /* _ATMLEC_H_ */
93