2 #include <linux/kernel.h>
3 #include <linux/module.h>
4 #include <linux/isdn/capilli.h>
6 #define DBG(format, arg...) do { \
7 printk(KERN_DEBUG "%s: " format "\n" , __func__ , ## arg); \
10 struct capilib_msgidqueue {
11 struct capilib_msgidqueue *next;
16 struct list_head list;
21 struct capilib_msgidqueue *msgidqueue;
22 struct capilib_msgidqueue *msgidlast;
23 struct capilib_msgidqueue *msgidfree;
24 struct capilib_msgidqueue msgidpool[CAPI_MAXDATAWINDOW];
27 // ---------------------------------------------------------------------------
30 static inline void mq_init(struct capilib_ncci * np)
33 np->msgidqueue = NULL;
36 memset(np->msgidpool, 0, sizeof(np->msgidpool));
37 np->msgidfree = &np->msgidpool[0];
38 for (i = 1; i < np->winsize; i++) {
39 np->msgidpool[i].next = np->msgidfree;
40 np->msgidfree = &np->msgidpool[i];
44 static inline int mq_enqueue(struct capilib_ncci * np, u16 msgid)
46 struct capilib_msgidqueue *mq;
47 if ((mq = np->msgidfree) == NULL)
49 np->msgidfree = mq->next;
53 np->msgidlast->next = mq;
61 static inline int mq_dequeue(struct capilib_ncci * np, u16 msgid)
63 struct capilib_msgidqueue **pp;
64 for (pp = &np->msgidqueue; *pp; pp = &(*pp)->next) {
65 if ((*pp)->msgid == msgid) {
66 struct capilib_msgidqueue *mq = *pp;
68 if (mq == np->msgidlast)
70 mq->next = np->msgidfree;
79 void capilib_new_ncci(struct list_head *head, u16 applid, u32 ncci, u32 winsize)
81 struct capilib_ncci *np;
83 np = kmalloc(sizeof(*np), GFP_ATOMIC);
85 printk(KERN_WARNING "capilib_new_ncci: no memory.\n");
88 if (winsize > CAPI_MAXDATAWINDOW) {
89 printk(KERN_ERR "capi_new_ncci: winsize %d too big\n",
91 winsize = CAPI_MAXDATAWINDOW;
95 np->winsize = winsize;
97 list_add_tail(&np->list, head);
98 DBG("kcapi: appl %d ncci 0x%x up", applid, ncci);
101 EXPORT_SYMBOL(capilib_new_ncci);
103 void capilib_free_ncci(struct list_head *head, u16 applid, u32 ncci)
106 struct capilib_ncci *np;
108 list_for_each(l, head) {
109 np = list_entry(l, struct capilib_ncci, list);
110 if (np->applid != applid)
112 if (np->ncci != ncci)
114 printk(KERN_INFO "kcapi: appl %d ncci 0x%x down\n", applid, ncci);
119 printk(KERN_ERR "capilib_free_ncci: ncci 0x%x not found\n", ncci);
122 EXPORT_SYMBOL(capilib_free_ncci);
124 void capilib_release_appl(struct list_head *head, u16 applid)
126 struct list_head *l, *n;
127 struct capilib_ncci *np;
129 list_for_each_safe(l, n, head) {
130 np = list_entry(l, struct capilib_ncci, list);
131 if (np->applid != applid)
133 printk(KERN_INFO "kcapi: appl %d ncci 0x%x forced down\n", applid, np->ncci);
139 EXPORT_SYMBOL(capilib_release_appl);
141 void capilib_release(struct list_head *head)
143 struct list_head *l, *n;
144 struct capilib_ncci *np;
146 list_for_each_safe(l, n, head) {
147 np = list_entry(l, struct capilib_ncci, list);
148 printk(KERN_INFO "kcapi: appl %d ncci 0x%x forced down\n", np->applid, np->ncci);
154 EXPORT_SYMBOL(capilib_release);
156 u16 capilib_data_b3_req(struct list_head *head, u16 applid, u32 ncci, u16 msgid)
159 struct capilib_ncci *np;
161 list_for_each(l, head) {
162 np = list_entry(l, struct capilib_ncci, list);
163 if (np->applid != applid)
165 if (np->ncci != ncci)
168 if (mq_enqueue(np, msgid) == 0)
169 return CAPI_SENDQUEUEFULL;
173 printk(KERN_ERR "capilib_data_b3_req: ncci 0x%x not found\n", ncci);
177 EXPORT_SYMBOL(capilib_data_b3_req);
179 void capilib_data_b3_conf(struct list_head *head, u16 applid, u32 ncci, u16 msgid)
182 struct capilib_ncci *np;
184 list_for_each(l, head) {
185 np = list_entry(l, struct capilib_ncci, list);
186 if (np->applid != applid)
188 if (np->ncci != ncci)
191 if (mq_dequeue(np, msgid) == 0) {
192 printk(KERN_ERR "kcapi: msgid %hu ncci 0x%x not on queue\n",
197 printk(KERN_ERR "capilib_data_b3_conf: ncci 0x%x not found\n", ncci);
200 EXPORT_SYMBOL(capilib_data_b3_conf);