1 /* SPDX-License-Identifier: GPL-2.0 */ 1
2 /*
3 * Lan Emulation client header file
4 *
5 * Marko Kiiskila <mkiiskila@yahoo.com>
6 */
7
8 #ifndef _LEC_H_
9 #define _LEC_H_
10
11 #include <linux/atmdev.h>
12 #include <linux/netdevice.h>
13 #include <linux/atmlec.h>
14
15 #define LEC_HEADER_LEN 16
16
17 struct lecdatahdr_8023 {
18 __be16 le_header;
19 unsigned char h_dest[ETH_ALEN];
20 unsigned char h_source[ETH_ALEN];
21 __be16 h_type;
22 };
23
24 struct lecdatahdr_8025 {
25 __be16 le_header;
26 unsigned char ac_pad;
27 unsigned char fc;
28 unsigned char h_dest[ETH_ALEN];
29 unsigned char h_source[ETH_ALEN];
30 };
31
32 #define LEC_MINIMUM_8023_SIZE 62
33 #define LEC_MINIMUM_8025_SIZE 16
34
35 /*
36 * Operations that LANE2 capable device can do
37 * are used to make the device do things. See
38 *
39 * The third function is intended for the MPOA
40 * top of the LANE device. The MPOA component
41 * to (*associate_indicator)() and the LANE de
42 * function to tell about TLVs it sees floatin
43 *
44 */
45 struct lane2_ops {
46 int (*resolve) (struct net_device *dev
47 u8 **tlvs, u32 *sizeof
48 int (*associate_req) (struct net_devic
49 const u8 *tlvs,
50 void (*associate_indicator) (struct ne
51 const u8
52 };
53
54 /*
55 * ATM LAN Emulation supports both LLC & Dix E
56 * frames.
57 *
58 * 1. Dix Ethernet EtherType frames encoded by
59 * field in h_type field. Data follows imme
60 * 2. LLC Data frames whose total length, incl
61 * but not padding required to meet the min
62 * is less than ETH_P_802_3_MIN MUST be enc
63 * in the h_type field. The LLC field follo
64 * 3. LLC data frames longer than this maximum
65 * the value 0 in the h_type field.
66 *
67 */
68
69 /* Hash table size */
70 #define LEC_ARP_TABLE_SIZE 16
71
72 struct lec_priv {
73 unsigned short lecid;
74 struct hlist_head lec_arp_empty_ones;
75
76 struct hlist_head lec_arp_tables[LEC_A
77
78 struct hlist_head lec_no_forward;
79
80
81
82
83
84
85 struct hlist_head mcast_fwds;
86
87
88
89
90
91
92 spinlock_t lec_arp_lock;
93 struct atm_vcc *mcast_vcc;
94 struct atm_vcc *lecd;
95 struct delayed_work lec_arp_work;
96 unsigned int maximum_unknown_frame_cou
97
98
99
100
101 unsigned long max_unknown_frame_time;
102
103
104
105
106 unsigned long vcc_timeout_period;
107
108
109
110
111
112 unsigned short max_retry_count;
113
114
115
116
117 unsigned long aging_time;
118
119
120
121
122 unsigned long forward_delay_time;
123 int topology_change;
124
125
126
127
128 unsigned long arp_response_time;
129
130
131
132
133 unsigned long flush_timeout;
134
135
136
137
138 unsigned long path_switching_delay;
139
140 u8 *tlvs;
141 u32 sizeoftlvs;
142 int lane_version;
143 int itfnum;
144 struct lane2_ops *lane2_ops;
145 int is_proxy;
146 };
147
148 struct lec_vcc_priv {
149 void (*old_pop) (struct atm_vcc *vcc,
150 int xoff;
151 };
152
153 #define LEC_VCC_PRIV(vcc) ((struct lec_v
154
155 #endif /* _LEC_H_ */
156
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