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15#define ISDN_WAITCHARGE 1
16#define ISDN_HAVECHARGE 2
17#define ISDN_CHARGEHUP 4
18#define ISDN_INHUP 8
19#define ISDN_MANCHARGE 16
20
21
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23
24
25#define CISCO_ADDR_UNICAST 0x0f
26#define CISCO_ADDR_BROADCAST 0x8f
27#define CISCO_CTRL 0x00
28#define CISCO_TYPE_CDP 0x2000
29#define CISCO_TYPE_SLARP 0x8035
30#define CISCO_SLARP_REQUEST 0
31#define CISCO_SLARP_REPLY 1
32#define CISCO_SLARP_KEEPALIVE 2
33
34extern char *isdn_net_new(char *, struct net_device *);
35extern char *isdn_net_newslave(char *);
36extern int isdn_net_rm(char *);
37extern int isdn_net_rmall(void);
38extern int isdn_net_stat_callback(int, isdn_ctrl *);
39extern int isdn_net_setcfg(isdn_net_ioctl_cfg *);
40extern int isdn_net_getcfg(isdn_net_ioctl_cfg *);
41extern int isdn_net_addphone(isdn_net_ioctl_phone *);
42extern int isdn_net_getphones(isdn_net_ioctl_phone *, char __user *);
43extern int isdn_net_getpeer(isdn_net_ioctl_phone *, isdn_net_ioctl_phone __user *);
44extern int isdn_net_delphone(isdn_net_ioctl_phone *);
45extern int isdn_net_find_icall(int, int, int, setup_parm *);
46extern void isdn_net_hangup(struct net_device *);
47extern void isdn_net_dial(void);
48extern void isdn_net_autohup(void);
49extern int isdn_net_force_hangup(char *);
50extern int isdn_net_force_dial(char *);
51extern isdn_net_dev *isdn_net_findif(char *);
52extern int isdn_net_rcv_skb(int, struct sk_buff *);
53extern int isdn_net_dial_req(isdn_net_local *);
54extern void isdn_net_writebuf_skb(isdn_net_local *lp, struct sk_buff *skb);
55extern void isdn_net_write_super(isdn_net_local *lp, struct sk_buff *skb);
56
57#define ISDN_NET_MAX_QUEUE_LENGTH 2
58
59#define ISDN_MASTER_PRIV(lp) ((isdn_net_local *) netdev_priv(lp->master))
60#define ISDN_SLAVE_PRIV(lp) ((isdn_net_local *) netdev_priv(lp->slave))
61#define MASTER_TO_SLAVE(master) \
62 (((isdn_net_local *) netdev_priv(master))->slave)
63
64
65
66
67static __inline__ int isdn_net_lp_busy(isdn_net_local *lp)
68{
69 if (atomic_read(&lp->frame_cnt) < ISDN_NET_MAX_QUEUE_LENGTH)
70 return 0;
71 else
72 return 1;
73}
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77
78
79static __inline__ isdn_net_local *isdn_net_get_locked_lp(isdn_net_dev *nd)
80{
81 unsigned long flags;
82 isdn_net_local *lp;
83
84 spin_lock_irqsave(&nd->queue_lock, flags);
85 lp = nd->queue;
86 while (isdn_net_lp_busy(nd->queue)) {
87 nd->queue = nd->queue->next;
88 if (nd->queue == lp) {
89 lp = NULL;
90 goto errout;
91 }
92 }
93 lp = nd->queue;
94 nd->queue = nd->queue->next;
95 spin_unlock_irqrestore(&nd->queue_lock, flags);
96 spin_lock(&lp->xmit_lock);
97 local_bh_disable();
98 return lp;
99errout:
100 spin_unlock_irqrestore(&nd->queue_lock, flags);
101 return lp;
102}
103
104
105
106
107static __inline__ void isdn_net_add_to_bundle(isdn_net_dev *nd, isdn_net_local *nlp)
108{
109 isdn_net_local *lp;
110 unsigned long flags;
111
112 spin_lock_irqsave(&nd->queue_lock, flags);
113
114 lp = nd->queue;
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116
117 nlp->last = lp->last;
118 lp->last->next = nlp;
119 lp->last = nlp;
120 nlp->next = lp;
121 nd->queue = nlp;
122
123 spin_unlock_irqrestore(&nd->queue_lock, flags);
124}
125
126
127
128static __inline__ void isdn_net_rm_from_bundle(isdn_net_local *lp)
129{
130 isdn_net_local *master_lp = lp;
131 unsigned long flags;
132
133 if (lp->master)
134 master_lp = ISDN_MASTER_PRIV(lp);
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137
138 spin_lock_irqsave(&master_lp->netdev->queue_lock, flags);
139 lp->last->next = lp->next;
140 lp->next->last = lp->last;
141 if (master_lp->netdev->queue == lp) {
142 master_lp->netdev->queue = lp->next;
143 if (lp->next == lp) {
144 master_lp->netdev->queue = master_lp->netdev->local;
145 }
146 }
147 lp->next = lp->last = lp;
148
149
150 spin_unlock_irqrestore(&master_lp->netdev->queue_lock, flags);
151}
152