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Commit 31d772cf authored by Kai Germaschewski's avatar Kai Germaschewski
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ISDN: CAPI: alloc struct capi_appl dynamically 

First step in having the users alloc this as part of the state info
they have to maintain anyway.
parent d095870d
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Showing with 109 additions and 61 deletions
drivers/isdn/capi/kcapi.c
View file @ 31d772cf
......@@ -9,6 +9,10 @@
*
*/
#define DBG(format, arg...) do { \
printk(KERN_DEBUG __FUNCTION__ ": " format "\n" , ## arg); \
} while (0)
#define CONFIG_AVMB1_COMPAT
#include <linux/config.h>
......@@ -97,15 +101,9 @@ static struct capi_version driver_version = {2, 0, 1, 1<<4};
static char driver_serial[CAPI_SERIAL_LEN] = "0004711";
static char capi_manufakturer[64] = "AVM Berlin";
#define APPL(a) (&applications[(a)-1])
#define VALID_APPLID(a) ((a) && (a) <= CAPI_MAXAPPL && APPL(a)->applid == a)
#define APPL_IS_FREE(a) (APPL(a)->applid == 0)
#define APPL_MARK_FREE(a) do{ APPL(a)->applid=0; MOD_DEC_USE_COUNT; }while(0)
#define APPL_MARK_USED(a) do{ APPL(a)->applid=(a); MOD_INC_USE_COUNT; }while(0)
#define NCCI2CTRL(ncci) (((ncci) >> 24) & 0x7f)
static struct capi_appl applications[CAPI_MAXAPPL];
static struct capi_appl *applications[CAPI_MAXAPPL];
static struct capi_ctr *cards[CAPI_MAXCONTR];
static int ncards;
static struct sk_buff_head recv_queue;
......@@ -125,11 +123,13 @@ static inline struct capi_ctr *
capi_ctr_get(struct capi_ctr *card)
{
if (card->driver->owner) {
if (try_inc_mod_count(card->driver->owner))
if (try_inc_mod_count(card->driver->owner)) {
DBG("MOD_COUNT INC");
return card;
else
} else
return NULL;
}
DBG("MOD_COUNT INC");
return card;
}
......@@ -138,8 +138,11 @@ capi_ctr_put(struct capi_ctr *card)
{
if (card->driver->owner)
__MOD_DEC_USE_COUNT(card->driver->owner);
DBG("MOD_COUNT DEC");
}
/* ------------------------------------------------------------- */
static inline struct capi_ctr *get_capi_ctr_by_nr(u16 contr)
{
if (contr - 1 >= CAPI_MAXCONTR)
......@@ -148,6 +151,14 @@ static inline struct capi_ctr *get_capi_ctr_by_nr(u16 contr)
return cards[contr - 1];
}
static inline struct capi_appl *get_capi_appl_by_nr(u16 applid)
{
if (applid - 1 >= CAPI_MAXAPPL)
return NULL;
return applications[applid - 1];
}
/* -------- util functions ------------------------------------ */
static char *cardstate2str(unsigned short cardstate)
......@@ -207,9 +218,9 @@ static int proc_applications_read_proc(char *page, char **start, off_t off,
int i;
int len = 0;
for (i=0; i < CAPI_MAXAPPL; i++) {
ap = &applications[i];
if (ap->applid == 0) continue;
for (i=1; i <= CAPI_MAXAPPL; i++) {
ap = get_capi_appl_by_nr(i);
if (!ap) continue;
len += sprintf(page+len, "%u %d %d %d %d %d\n",
ap->applid,
ap->rparam.level3cnt,
......@@ -246,9 +257,9 @@ static int proc_ncci_read_proc(char *page, char **start, off_t off,
int i;
int len = 0;
for (i=0; i < CAPI_MAXAPPL; i++) {
ap = &applications[i];
if (ap->applid == 0) continue;
for (i=1; i <= CAPI_MAXAPPL; i++) {
ap = get_capi_appl_by_nr(i);
if (!ap) continue;
for (np = ap->nccilist; np; np = np->next) {
len += sprintf(page+len, "%d 0x%x %d %d\n",
np->applid,
......@@ -393,9 +404,9 @@ static int proc_applstats_read_proc(char *page, char **start, off_t off,
int i;
int len = 0;
for (i=0; i < CAPI_MAXAPPL; i++) {
ap = &applications[i];
if (ap->applid == 0) continue;
for (i=1; i <= CAPI_MAXAPPL; i++) {
ap = get_capi_appl_by_nr(i);
if (!ap) continue;
len += sprintf(page+len, "%u %lu %lu %lu %lu\n",
ap->applid,
ap->nrecvctlpkt,
......@@ -514,15 +525,18 @@ static void register_appl(struct capi_ctr *card, u16 applid, capi_register_param
static void release_appl(struct capi_ctr *card, u16 applid)
{
struct capi_appl *ap = get_capi_appl_by_nr(applid);
struct capi_ncci **pp, **nextpp;
for (pp = &APPL(applid)->nccilist; *pp; pp = nextpp) {
DBG("");
for (pp = &ap->nccilist; *pp; pp = nextpp) {
if (NCCI2CTRL((*pp)->ncci) == card->cnr) {
struct capi_ncci *np = *pp;
*pp = np->next;
printk(KERN_INFO "kcapi: appl %d ncci 0x%x down!\n", applid, np->ncci);
kfree(np);
APPL(applid)->nncci--;
ap->nncci--;
nextpp = pp;
} else {
nextpp = &(*pp)->next;
......@@ -770,7 +784,9 @@ static void controllercb_new_ncci(struct capi_ctr * card,
u16 appl, u32 ncci, u32 winsize)
{
struct capi_ncci *np;
if (!VALID_APPLID(appl)) {
struct capi_appl *ap = get_capi_appl_by_nr(appl);
if (!ap) {
printk(KERN_ERR "avmb1_handle_new_ncci: illegal appl %d\n", appl);
return;
}
......@@ -787,9 +803,9 @@ static void controllercb_new_ncci(struct capi_ctr * card,
np->ncci = ncci;
np->winsize = winsize;
mq_init(np);
np->next = APPL(appl)->nccilist;
APPL(appl)->nccilist = np;
APPL(appl)->nncci++;
np->next = ap->nccilist;
ap->nccilist = np;
ap->nncci++;
printk(KERN_INFO "kcapi: appl %d ncci 0x%x up\n", appl, ncci);
notify_push(KCI_NCCIUP, card->cnr, appl, ncci);
......@@ -799,16 +815,17 @@ static void controllercb_free_ncci(struct capi_ctr * card,
u16 appl, u32 ncci)
{
struct capi_ncci **pp;
if (!VALID_APPLID(appl)) {
struct capi_appl *ap = get_capi_appl_by_nr(appl);
if (!ap) {
printk(KERN_ERR "free_ncci: illegal appl %d\n", appl);
return;
}
for (pp = &APPL(appl)->nccilist; *pp; pp = &(*pp)->next) {
for (pp = &ap->nccilist; *pp; pp = &(*pp)->next) {
if ((*pp)->ncci == ncci) {
struct capi_ncci *np = *pp;
*pp = np->next;
kfree(np);
APPL(appl)->nncci--;
ap->nncci--;
printk(KERN_INFO "kcapi: appl %d ncci 0x%x down\n", appl, ncci);
notify_push(KCI_NCCIDOWN, card->cnr, appl, ncci);
return;
......@@ -833,37 +850,38 @@ static struct capi_ncci *find_ncci(struct capi_appl * app, u32 ncci)
static void recv_handler(void *dummy)
{
struct sk_buff *skb;
struct capi_appl *ap;
struct capi_ncci *np;
while ((skb = skb_dequeue(&recv_queue)) != 0) {
u16 appl = CAPIMSG_APPID(skb->data);
struct capi_ncci *np;
if (!VALID_APPLID(appl)) {
ap = get_capi_appl_by_nr(CAPIMSG_APPID(skb->data));
if (!ap) {
printk(KERN_ERR "kcapi: recv_handler: applid %d ? (%s)\n",
appl, capi_message2str(skb->data));
ap->applid, capi_message2str(skb->data));
kfree_skb(skb);
continue;
}
if (APPL(appl)->signal == 0) {
if (ap->signal == 0) {
printk(KERN_ERR "kcapi: recv_handler: applid %d has no signal function\n",
appl);
ap->applid);
kfree_skb(skb);
continue;
}
if ( CAPIMSG_COMMAND(skb->data) == CAPI_DATA_B3
&& CAPIMSG_SUBCOMMAND(skb->data) == CAPI_CONF
&& (np = find_ncci(APPL(appl), CAPIMSG_NCCI(skb->data))) != 0
&& (np = find_ncci(ap, CAPIMSG_NCCI(skb->data))) != 0
&& mq_dequeue(np, CAPIMSG_MSGID(skb->data)) == 0) {
printk(KERN_ERR "kcapi: msgid %hu ncci 0x%x not on queue\n",
CAPIMSG_MSGID(skb->data), np->ncci);
}
if ( CAPIMSG_COMMAND(skb->data) == CAPI_DATA_B3
&& CAPIMSG_SUBCOMMAND(skb->data) == CAPI_IND) {
APPL(appl)->nrecvdatapkt++;
ap->nrecvdatapkt++;
} else {
APPL(appl)->nrecvctlpkt++;
ap->nrecvctlpkt++;
}
skb_queue_tail(&APPL(appl)->recv_queue, skb);
(APPL(appl)->signal) (APPL(appl)->applid, APPL(appl)->param);
skb_queue_tail(&ap->recv_queue, skb);
(ap->signal) (ap->applid, ap->param);
}
}
......@@ -914,12 +932,14 @@ static void controllercb_handle_capimsg(struct capi_ctr * card,
static void controllercb_ready(struct capi_ctr * card)
{
u16 appl;
struct capi_appl *ap;
card->cardstate = CARD_RUNNING;
for (appl = 1; appl <= CAPI_MAXAPPL; appl++) {
if (!VALID_APPLID(appl)) continue;
register_appl(card, appl, &APPL(appl)->rparam);
ap = get_capi_appl_by_nr(appl);
if (!ap) continue;
register_appl(card, appl, &ap->rparam);
}
printk(KERN_NOTICE "kcapi: card %d \"%s\" ready.\n",
......@@ -932,6 +952,8 @@ static void controllercb_reseted(struct capi_ctr * card)
{
u16 appl;
DBG("");
if (card->cardstate == CARD_DETECTED)
return;
......@@ -943,8 +965,13 @@ static void controllercb_reseted(struct capi_ctr * card)
memset(card->serial, 0, sizeof(card->serial));
for (appl = 1; appl <= CAPI_MAXAPPL; appl++) {
struct capi_appl *ap = get_capi_appl_by_nr(appl);
struct capi_ncci **pp, **nextpp;
for (pp = &APPL(appl)->nccilist; *pp; pp = nextpp) {
if (!ap)
continue;
for (pp = &ap->nccilist; *pp; pp = nextpp) {
if (NCCI2CTRL((*pp)->ncci) == card->cnr) {
struct capi_ncci *np = *pp;
*pp = np->next;
......@@ -1141,29 +1168,39 @@ static u16 capi_isinstalled(void)
static u16 capi_register(capi_register_params * rparam, u16 * applidp)
{
struct capi_appl *ap;
int appl;
int i;
DBG("");
if (rparam->datablklen < 128)
return CAPI_LOGBLKSIZETOSMALL;
for (appl = 1; appl <= CAPI_MAXAPPL; appl++) {
if (APPL_IS_FREE(appl))
if (applications[appl - 1] == NULL)
break;
}
if (appl > CAPI_MAXAPPL)
return CAPI_TOOMANYAPPLS;
APPL_MARK_USED(appl);
skb_queue_head_init(&APPL(appl)->recv_queue);
APPL(appl)->nncci = 0;
ap = kmalloc(sizeof(*ap), GFP_KERNEL);
if (!ap)
return CAPI_REGOSRESOURCEERR;
memset(ap, 0, sizeof(*ap));
ap->applid = appl;
applications[appl - 1] = ap;
skb_queue_head_init(&ap->recv_queue);
ap->nncci = 0;
memcpy(&APPL(appl)->rparam, rparam, sizeof(capi_register_params));
memcpy(&ap->rparam, rparam, sizeof(capi_register_params));
for (i = 0; i < CAPI_MAXCONTR; i++) {
if (!cards[i] || cards[i]->cardstate != CARD_RUNNING)
continue;
register_appl(cards[i], appl, &APPL(appl)->rparam);
register_appl(cards[i], appl, &ap->rparam);
}
*applidp = appl;
printk(KERN_INFO "kcapi: appl %d up\n", appl);
......@@ -1173,18 +1210,22 @@ static u16 capi_register(capi_register_params * rparam, u16 * applidp)
static u16 capi_release(u16 applid)
{
struct capi_appl *ap = get_capi_appl_by_nr(applid);
int i;
if (!VALID_APPLID(applid))
DBG("applid %#x", applid);
if (!ap)
return CAPI_ILLAPPNR;
skb_queue_purge(&APPL(applid)->recv_queue);
skb_queue_purge(&ap->recv_queue);
for (i = 0; i < CAPI_MAXCONTR; i++) {
if (!cards[i] || cards[i]->cardstate != CARD_RUNNING)
continue;
release_appl(cards[i], applid);
}
APPL(applid)->signal = 0;
APPL_MARK_FREE(applid);
applications[applid - 1] = NULL;
kfree(ap);
printk(KERN_INFO "kcapi: appl %d down\n", applid);
return CAPI_NOERROR;
......@@ -1193,13 +1234,17 @@ static u16 capi_release(u16 applid)
static u16 capi_put_message(u16 applid, struct sk_buff *skb)
{
struct capi_ctr *card;
struct capi_appl *ap;
struct capi_ncci *np;
int showctl = 0;
u8 cmd, subcmd;
DBG("applid %#x", applid);
if (ncards == 0)
return CAPI_REGNOTINSTALLED;
if (!VALID_APPLID(applid))
ap = get_capi_appl_by_nr(applid);
if (!ap)
return CAPI_ILLAPPNR;
if (skb->len < 12
|| !capi_cmd_valid(CAPIMSG_COMMAND(skb->data))
......@@ -1218,15 +1263,15 @@ static u16 capi_put_message(u16 applid, struct sk_buff *skb)
subcmd = CAPIMSG_SUBCOMMAND(skb->data);
if (cmd == CAPI_DATA_B3 && subcmd== CAPI_REQ) {
if ((np = find_ncci(APPL(applid), CAPIMSG_NCCI(skb->data))) != 0
if ((np = find_ncci(ap, CAPIMSG_NCCI(skb->data))) != 0
&& mq_enqueue(np, CAPIMSG_MSGID(skb->data)) == 0)
return CAPI_SENDQUEUEFULL;
card->nsentdatapkt++;
APPL(applid)->nsentdatapkt++;
ap->nsentdatapkt++;
if (card->traceflag > 2) showctl |= 2;
} else {
card->nsentctlpkt++;
APPL(applid)->nsentctlpkt++;
ap->nsentctlpkt++;
if (card->traceflag) showctl |= 2;
}
showctl |= (card->traceflag & 1);
......@@ -1250,11 +1295,12 @@ static u16 capi_put_message(u16 applid, struct sk_buff *skb)
static u16 capi_get_message(u16 applid, struct sk_buff **msgp)
{
struct capi_appl *ap = get_capi_appl_by_nr(applid);
struct sk_buff *skb;
if (!VALID_APPLID(applid))
if (!ap)
return CAPI_ILLAPPNR;
if ((skb = skb_dequeue(&APPL(applid)->recv_queue)) == 0)
if ((skb = skb_dequeue(&ap->recv_queue)) == 0)
return CAPI_RECEIVEQUEUEEMPTY;
*msgp = skb;
return CAPI_NOERROR;
......@@ -1264,10 +1310,12 @@ static u16 capi_set_signal(u16 applid,
void (*signal) (u16 applid, void *param),
void *param)
{
if (!VALID_APPLID(applid))
struct capi_appl *ap = get_capi_appl_by_nr(applid);
if (!ap)
return CAPI_ILLAPPNR;
APPL(applid)->signal = signal;
APPL(applid)->param = param;
ap->signal = signal;
ap->param = param;
return CAPI_NOERROR;
}
......
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