]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/linux/atalk.h
cpumask: reduce stack usage in SD_x_INIT initializers
[mirror_ubuntu-bionic-kernel.git] / include / linux / atalk.h
1 #ifndef __LINUX_ATALK_H__
2 #define __LINUX_ATALK_H__
3
4 #include <asm/byteorder.h>
5
6 /*
7 * AppleTalk networking structures
8 *
9 * The following are directly referenced from the University Of Michigan
10 * netatalk for compatibility reasons.
11 */
12 #define ATPORT_FIRST 1
13 #define ATPORT_RESERVED 128
14 #define ATPORT_LAST 254 /* 254 is only legal on localtalk */
15 #define ATADDR_ANYNET (__u16)0
16 #define ATADDR_ANYNODE (__u8)0
17 #define ATADDR_ANYPORT (__u8)0
18 #define ATADDR_BCAST (__u8)255
19 #define DDP_MAXSZ 587
20 #define DDP_MAXHOPS 15 /* 4 bits of hop counter */
21
22 #define SIOCATALKDIFADDR (SIOCPROTOPRIVATE + 0)
23
24 struct atalk_addr {
25 __be16 s_net;
26 __u8 s_node;
27 };
28
29 struct sockaddr_at {
30 sa_family_t sat_family;
31 __u8 sat_port;
32 struct atalk_addr sat_addr;
33 char sat_zero[8];
34 };
35
36 struct atalk_netrange {
37 __u8 nr_phase;
38 __be16 nr_firstnet;
39 __be16 nr_lastnet;
40 };
41
42 #ifdef __KERNEL__
43
44 #include <net/sock.h>
45
46 struct atalk_route {
47 struct net_device *dev;
48 struct atalk_addr target;
49 struct atalk_addr gateway;
50 int flags;
51 struct atalk_route *next;
52 };
53
54 /**
55 * struct atalk_iface - AppleTalk Interface
56 * @dev - Network device associated with this interface
57 * @address - Our address
58 * @status - What are we doing?
59 * @nets - Associated direct netrange
60 * @next - next element in the list of interfaces
61 */
62 struct atalk_iface {
63 struct net_device *dev;
64 struct atalk_addr address;
65 int status;
66 #define ATIF_PROBE 1 /* Probing for an address */
67 #define ATIF_PROBE_FAIL 2 /* Probe collided */
68 struct atalk_netrange nets;
69 struct atalk_iface *next;
70 };
71
72 struct atalk_sock {
73 /* struct sock has to be the first member of atalk_sock */
74 struct sock sk;
75 __be16 dest_net;
76 __be16 src_net;
77 unsigned char dest_node;
78 unsigned char src_node;
79 unsigned char dest_port;
80 unsigned char src_port;
81 };
82
83 static inline struct atalk_sock *at_sk(struct sock *sk)
84 {
85 return (struct atalk_sock *)sk;
86 }
87
88 struct ddpehdr {
89 __be16 deh_len_hops; /* lower 10 bits are length, next 4 - hops */
90 __be16 deh_sum;
91 __be16 deh_dnet;
92 __be16 deh_snet;
93 __u8 deh_dnode;
94 __u8 deh_snode;
95 __u8 deh_dport;
96 __u8 deh_sport;
97 /* And netatalk apps expect to stick the type in themselves */
98 };
99
100 static __inline__ struct ddpehdr *ddp_hdr(struct sk_buff *skb)
101 {
102 return (struct ddpehdr *)skb_transport_header(skb);
103 }
104
105 /* AppleTalk AARP headers */
106 struct elapaarp {
107 __be16 hw_type;
108 #define AARP_HW_TYPE_ETHERNET 1
109 #define AARP_HW_TYPE_TOKENRING 2
110 __be16 pa_type;
111 __u8 hw_len;
112 __u8 pa_len;
113 #define AARP_PA_ALEN 4
114 __be16 function;
115 #define AARP_REQUEST 1
116 #define AARP_REPLY 2
117 #define AARP_PROBE 3
118 __u8 hw_src[ETH_ALEN];
119 __u8 pa_src_zero;
120 __be16 pa_src_net;
121 __u8 pa_src_node;
122 __u8 hw_dst[ETH_ALEN];
123 __u8 pa_dst_zero;
124 __be16 pa_dst_net;
125 __u8 pa_dst_node;
126 } __attribute__ ((packed));
127
128 static __inline__ struct elapaarp *aarp_hdr(struct sk_buff *skb)
129 {
130 return (struct elapaarp *)skb_transport_header(skb);
131 }
132
133 /* Not specified - how long till we drop a resolved entry */
134 #define AARP_EXPIRY_TIME (5 * 60 * HZ)
135 /* Size of hash table */
136 #define AARP_HASH_SIZE 16
137 /* Fast retransmission timer when resolving */
138 #define AARP_TICK_TIME (HZ / 5)
139 /* Send 10 requests then give up (2 seconds) */
140 #define AARP_RETRANSMIT_LIMIT 10
141 /*
142 * Some value bigger than total retransmit time + a bit for last reply to
143 * appear and to stop continual requests
144 */
145 #define AARP_RESOLVE_TIME (10 * HZ)
146
147 extern struct datalink_proto *ddp_dl, *aarp_dl;
148 extern void aarp_proto_init(void);
149
150 /* Inter module exports */
151
152 /* Give a device find its atif control structure */
153 static inline struct atalk_iface *atalk_find_dev(struct net_device *dev)
154 {
155 return dev->atalk_ptr;
156 }
157
158 extern struct atalk_addr *atalk_find_dev_addr(struct net_device *dev);
159 extern struct net_device *atrtr_get_dev(struct atalk_addr *sa);
160 extern int aarp_send_ddp(struct net_device *dev,
161 struct sk_buff *skb,
162 struct atalk_addr *sa, void *hwaddr);
163 extern void aarp_device_down(struct net_device *dev);
164 extern void aarp_probe_network(struct atalk_iface *atif);
165 extern int aarp_proxy_probe_network(struct atalk_iface *atif,
166 struct atalk_addr *sa);
167 extern void aarp_proxy_remove(struct net_device *dev,
168 struct atalk_addr *sa);
169
170 extern void aarp_cleanup_module(void);
171
172 extern struct hlist_head atalk_sockets;
173 extern rwlock_t atalk_sockets_lock;
174
175 extern struct atalk_route *atalk_routes;
176 extern rwlock_t atalk_routes_lock;
177
178 extern struct atalk_iface *atalk_interfaces;
179 extern rwlock_t atalk_interfaces_lock;
180
181 extern struct atalk_route atrtr_default;
182
183 extern const struct file_operations atalk_seq_arp_fops;
184
185 extern int sysctl_aarp_expiry_time;
186 extern int sysctl_aarp_tick_time;
187 extern int sysctl_aarp_retransmit_limit;
188 extern int sysctl_aarp_resolve_time;
189
190 #ifdef CONFIG_SYSCTL
191 extern void atalk_register_sysctl(void);
192 extern void atalk_unregister_sysctl(void);
193 #else
194 #define atalk_register_sysctl() do { } while(0)
195 #define atalk_unregister_sysctl() do { } while(0)
196 #endif
197
198 #ifdef CONFIG_PROC_FS
199 extern int atalk_proc_init(void);
200 extern void atalk_proc_exit(void);
201 #else
202 #define atalk_proc_init() ({ 0; })
203 #define atalk_proc_exit() do { } while(0)
204 #endif /* CONFIG_PROC_FS */
205
206 #endif /* __KERNEL__ */
207 #endif /* __LINUX_ATALK_H__ */