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 
25 typedef 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 
45 struct 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 
59 struct 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 
87 struct 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