Root/
1 | /* |
2 | * Lan Emulation client header file |
3 | * |
4 | * Marko Kiiskila <mkiiskila@yahoo.com> |
5 | */ |
6 | |
7 | #ifndef _LEC_H_ |
8 | #define _LEC_H_ |
9 | |
10 | #include <linux/atmdev.h> |
11 | #include <linux/netdevice.h> |
12 | #include <linux/atmlec.h> |
13 | |
14 | #define LEC_HEADER_LEN 16 |
15 | |
16 | struct lecdatahdr_8023 { |
17 | __be16 le_header; |
18 | unsigned char h_dest[ETH_ALEN]; |
19 | unsigned char h_source[ETH_ALEN]; |
20 | __be16 h_type; |
21 | }; |
22 | |
23 | struct lecdatahdr_8025 { |
24 | __be16 le_header; |
25 | unsigned char ac_pad; |
26 | unsigned char fc; |
27 | unsigned char h_dest[ETH_ALEN]; |
28 | unsigned char h_source[ETH_ALEN]; |
29 | }; |
30 | |
31 | #define LEC_MINIMUM_8023_SIZE 62 |
32 | #define LEC_MINIMUM_8025_SIZE 16 |
33 | |
34 | /* |
35 | * Operations that LANE2 capable device can do. Two first functions |
36 | * are used to make the device do things. See spec 3.1.3 and 3.1.4. |
37 | * |
38 | * The third function is intended for the MPOA component sitting on |
39 | * top of the LANE device. The MPOA component assigns it's own function |
40 | * to (*associate_indicator)() and the LANE device will use that |
41 | * function to tell about TLVs it sees floating through. |
42 | * |
43 | */ |
44 | struct lane2_ops { |
45 | int (*resolve) (struct net_device *dev, const u8 *dst_mac, int force, |
46 | u8 **tlvs, u32 *sizeoftlvs); |
47 | int (*associate_req) (struct net_device *dev, const u8 *lan_dst, |
48 | const u8 *tlvs, u32 sizeoftlvs); |
49 | void (*associate_indicator) (struct net_device *dev, const u8 *mac_addr, |
50 | const u8 *tlvs, u32 sizeoftlvs); |
51 | }; |
52 | |
53 | /* |
54 | * ATM LAN Emulation supports both LLC & Dix Ethernet EtherType |
55 | * frames. |
56 | * |
57 | * 1. Dix Ethernet EtherType frames encoded by placing EtherType |
58 | * field in h_type field. Data follows immediatelly after header. |
59 | * 2. LLC Data frames whose total length, including LLC field and data, |
60 | * but not padding required to meet the minimum data frame length, |
61 | * is less than 1536(0x0600) MUST be encoded by placing that length |
62 | * in the h_type field. The LLC field follows header immediatelly. |
63 | * 3. LLC data frames longer than this maximum MUST be encoded by placing |
64 | * the value 0 in the h_type field. |
65 | * |
66 | */ |
67 | |
68 | /* Hash table size */ |
69 | #define LEC_ARP_TABLE_SIZE 16 |
70 | |
71 | struct lec_priv { |
72 | unsigned short lecid; /* Lecid of this client */ |
73 | struct hlist_head lec_arp_empty_ones; |
74 | /* Used for storing VCC's that don't have a MAC address attached yet */ |
75 | struct hlist_head lec_arp_tables[LEC_ARP_TABLE_SIZE]; |
76 | /* Actual LE ARP table */ |
77 | struct hlist_head lec_no_forward; |
78 | /* |
79 | * Used for storing VCC's (and forward packets from) which are to |
80 | * age out by not using them to forward packets. |
81 | * This is because to some LE clients there will be 2 VCCs. Only |
82 | * one of them gets used. |
83 | */ |
84 | struct hlist_head mcast_fwds; |
85 | /* |
86 | * With LANEv2 it is possible that BUS (or a special multicast server) |
87 | * establishes multiple Multicast Forward VCCs to us. This list |
88 | * collects all those VCCs. LANEv1 client has only one item in this |
89 | * list. These entries are not aged out. |
90 | */ |
91 | spinlock_t lec_arp_lock; |
92 | struct atm_vcc *mcast_vcc; /* Default Multicast Send VCC */ |
93 | struct atm_vcc *lecd; |
94 | struct delayed_work lec_arp_work; /* C10 */ |
95 | unsigned int maximum_unknown_frame_count; |
96 | /* |
97 | * Within the period of time defined by this variable, the client will send |
98 | * no more than C10 frames to BUS for a given unicast destination. (C11) |
99 | */ |
100 | unsigned long max_unknown_frame_time; |
101 | /* |
102 | * If no traffic has been sent in this vcc for this period of time, |
103 | * vcc will be torn down (C12) |
104 | */ |
105 | unsigned long vcc_timeout_period; |
106 | /* |
107 | * An LE Client MUST not retry an LE_ARP_REQUEST for a |
108 | * given frame's LAN Destination more than maximum retry count times, |
109 | * after the first LEC_ARP_REQUEST (C13) |
110 | */ |
111 | unsigned short max_retry_count; |
112 | /* |
113 | * Max time the client will maintain an entry in its arp cache in |
114 | * absence of a verification of that relationship (C17) |
115 | */ |
116 | unsigned long aging_time; |
117 | /* |
118 | * Max time the client will maintain an entry in cache when |
119 | * topology change flag is true (C18) |
120 | */ |
121 | unsigned long forward_delay_time; /* Topology change flag (C19) */ |
122 | int topology_change; |
123 | /* |
124 | * Max time the client expects an LE_ARP_REQUEST/LE_ARP_RESPONSE |
125 | * cycle to take (C20) |
126 | */ |
127 | unsigned long arp_response_time; |
128 | /* |
129 | * Time limit ot wait to receive an LE_FLUSH_RESPONSE after the |
130 | * LE_FLUSH_REQUEST has been sent before taking recover action. (C21) |
131 | */ |
132 | unsigned long flush_timeout; |
133 | /* The time since sending a frame to the bus after which the |
134 | * LE Client may assume that the frame has been either discarded or |
135 | * delivered to the recipient (C22) |
136 | */ |
137 | unsigned long path_switching_delay; |
138 | |
139 | u8 *tlvs; /* LANE2: TLVs are new */ |
140 | u32 sizeoftlvs; /* The size of the tlv array in bytes */ |
141 | int lane_version; /* LANE2 */ |
142 | int itfnum; /* e.g. 2 for lec2, 5 for lec5 */ |
143 | struct lane2_ops *lane2_ops; /* can be NULL for LANE v1 */ |
144 | int is_proxy; /* bridge between ATM and Ethernet */ |
145 | int is_trdev; /* Device type, 0 = Ethernet, 1 = TokenRing */ |
146 | }; |
147 | |
148 | struct lec_vcc_priv { |
149 | void (*old_pop) (struct atm_vcc *vcc, struct sk_buff *skb); |
150 | int xoff; |
151 | }; |
152 | |
153 | #define LEC_VCC_PRIV(vcc) ((struct lec_vcc_priv *)((vcc)->user_back)) |
154 | |
155 | #endif /* _LEC_H_ */ |
156 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9