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path: root/drivers/isdn/gigaset/capi.c
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Diffstat (limited to 'drivers/isdn/gigaset/capi.c')
-rw-r--r--drivers/isdn/gigaset/capi.c405
1 files changed, 285 insertions, 120 deletions
diff --git a/drivers/isdn/gigaset/capi.c b/drivers/isdn/gigaset/capi.c
index 8f78f15c8ef..6fbe8999c41 100644
--- a/drivers/isdn/gigaset/capi.c
+++ b/drivers/isdn/gigaset/capi.c
@@ -70,7 +70,7 @@
#define MAX_NUMBER_DIGITS 20
#define MAX_FMT_IE_LEN 20
-/* values for gigaset_capi_appl.connected */
+/* values for bcs->apconnstate */
#define APCONN_NONE 0 /* inactive/listening */
#define APCONN_SETUP 1 /* connecting */
#define APCONN_ACTIVE 2 /* B channel up */
@@ -80,10 +80,10 @@ struct gigaset_capi_appl {
struct list_head ctrlist;
struct gigaset_capi_appl *bcnext;
u16 id;
+ struct capi_register_params rp;
u16 nextMessageNumber;
u32 listenInfoMask;
u32 listenCIPmask;
- int connected;
};
/* CAPI specific controller data structure */
@@ -319,6 +319,39 @@ static const char *format_ie(const char *ie)
return result;
}
+/*
+ * emit DATA_B3_CONF message
+ */
+static void send_data_b3_conf(struct cardstate *cs, struct capi_ctr *ctr,
+ u16 appl, u16 msgid, int channel,
+ u16 handle, u16 info)
+{
+ struct sk_buff *cskb;
+ u8 *msg;
+
+ cskb = alloc_skb(CAPI_DATA_B3_CONF_LEN, GFP_ATOMIC);
+ if (!cskb) {
+ dev_err(cs->dev, "%s: out of memory\n", __func__);
+ return;
+ }
+ /* frequent message, avoid _cmsg overhead */
+ msg = __skb_put(cskb, CAPI_DATA_B3_CONF_LEN);
+ CAPIMSG_SETLEN(msg, CAPI_DATA_B3_CONF_LEN);
+ CAPIMSG_SETAPPID(msg, appl);
+ CAPIMSG_SETCOMMAND(msg, CAPI_DATA_B3);
+ CAPIMSG_SETSUBCOMMAND(msg, CAPI_CONF);
+ CAPIMSG_SETMSGID(msg, msgid);
+ CAPIMSG_SETCONTROLLER(msg, ctr->cnr);
+ CAPIMSG_SETPLCI_PART(msg, channel);
+ CAPIMSG_SETNCCI_PART(msg, 1);
+ CAPIMSG_SETHANDLE_CONF(msg, handle);
+ CAPIMSG_SETINFO_CONF(msg, info);
+
+ /* emit message */
+ dump_rawmsg(DEBUG_MCMD, __func__, msg);
+ capi_ctr_handle_message(ctr, appl, cskb);
+}
+
/*
* driver interface functions
@@ -339,7 +372,6 @@ void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *dskb)
struct gigaset_capi_ctr *iif = cs->iif;
struct gigaset_capi_appl *ap = bcs->ap;
unsigned char *req = skb_mac_header(dskb);
- struct sk_buff *cskb;
u16 flags;
/* update statistics */
@@ -351,39 +383,22 @@ void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *dskb)
}
/* don't send further B3 messages if disconnected */
- if (ap->connected < APCONN_ACTIVE) {
+ if (bcs->apconnstate < APCONN_ACTIVE) {
gig_dbg(DEBUG_LLDATA, "disconnected, discarding ack");
return;
}
- /* ToDo: honor unset "delivery confirmation" bit */
+ /*
+ * send DATA_B3_CONF if "delivery confirmation" bit was set in request;
+ * otherwise it has already been sent by do_data_b3_req()
+ */
flags = CAPIMSG_FLAGS(req);
-
- /* build DATA_B3_CONF message */
- cskb = alloc_skb(CAPI_DATA_B3_CONF_LEN, GFP_ATOMIC);
- if (!cskb) {
- dev_err(cs->dev, "%s: out of memory\n", __func__);
- return;
- }
- /* frequent message, avoid _cmsg overhead */
- CAPIMSG_SETLEN(cskb->data, CAPI_DATA_B3_CONF_LEN);
- CAPIMSG_SETAPPID(cskb->data, ap->id);
- CAPIMSG_SETCOMMAND(cskb->data, CAPI_DATA_B3);
- CAPIMSG_SETSUBCOMMAND(cskb->data, CAPI_CONF);
- CAPIMSG_SETMSGID(cskb->data, CAPIMSG_MSGID(req));
- CAPIMSG_SETCONTROLLER(cskb->data, iif->ctr.cnr);
- CAPIMSG_SETPLCI_PART(cskb->data, bcs->channel + 1);
- CAPIMSG_SETNCCI_PART(cskb->data, 1);
- CAPIMSG_SETHANDLE_CONF(cskb->data, CAPIMSG_HANDLE_REQ(req));
- if (flags & ~CAPI_FLAGS_DELIVERY_CONFIRMATION)
- CAPIMSG_SETINFO_CONF(cskb->data,
- CapiFlagsNotSupportedByProtocol);
- else
- CAPIMSG_SETINFO_CONF(cskb->data, CAPI_NOERROR);
-
- /* emit message */
- dump_rawmsg(DEBUG_LLDATA, "DATA_B3_CONF", cskb->data);
- capi_ctr_handle_message(&iif->ctr, ap->id, cskb);
+ if (flags & CAPI_FLAGS_DELIVERY_CONFIRMATION)
+ send_data_b3_conf(cs, &iif->ctr, ap->id, CAPIMSG_MSGID(req),
+ bcs->channel + 1, CAPIMSG_HANDLE_REQ(req),
+ (flags & ~CAPI_FLAGS_DELIVERY_CONFIRMATION) ?
+ CapiFlagsNotSupportedByProtocol :
+ CAPI_NOERROR);
}
EXPORT_SYMBOL_GPL(gigaset_skb_sent);
@@ -412,7 +427,7 @@ void gigaset_skb_rcvd(struct bc_state *bcs, struct sk_buff *skb)
}
/* don't send further B3 messages if disconnected */
- if (ap->connected < APCONN_ACTIVE) {
+ if (bcs->apconnstate < APCONN_ACTIVE) {
gig_dbg(DEBUG_LLDATA, "disconnected, discarding data");
dev_kfree_skb_any(skb);
return;
@@ -484,6 +499,7 @@ int gigaset_isdn_icall(struct at_state_t *at_state)
u32 actCIPmask;
struct sk_buff *skb;
unsigned int msgsize;
+ unsigned long flags;
int i;
/*
@@ -608,7 +624,14 @@ int gigaset_isdn_icall(struct at_state_t *at_state)
format_ie(iif->hcmsg.CalledPartyNumber));
/* scan application list for matching listeners */
- bcs->ap = NULL;
+ spin_lock_irqsave(&bcs->aplock, flags);
+ if (bcs->ap != NULL || bcs->apconnstate != APCONN_NONE) {
+ dev_warn(cs->dev, "%s: channel not properly cleared (%p/%d)\n",
+ __func__, bcs->ap, bcs->apconnstate);
+ bcs->ap = NULL;
+ bcs->apconnstate = APCONN_NONE;
+ }
+ spin_unlock_irqrestore(&bcs->aplock, flags);
actCIPmask = 1 | (1 << iif->hcmsg.CIPValue);
list_for_each_entry(ap, &iif->appls, ctrlist)
if (actCIPmask & ap->listenCIPmask) {
@@ -626,10 +649,12 @@ int gigaset_isdn_icall(struct at_state_t *at_state)
dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
/* add to listeners on this B channel, update state */
+ spin_lock_irqsave(&bcs->aplock, flags);
ap->bcnext = bcs->ap;
bcs->ap = ap;
bcs->chstate |= CHS_NOTIFY_LL;
- ap->connected = APCONN_SETUP;
+ bcs->apconnstate = APCONN_SETUP;
+ spin_unlock_irqrestore(&bcs->aplock, flags);
/* emit message */
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
@@ -654,7 +679,7 @@ static void send_disconnect_ind(struct bc_state *bcs,
struct gigaset_capi_ctr *iif = cs->iif;
struct sk_buff *skb;
- if (ap->connected == APCONN_NONE)
+ if (bcs->apconnstate == APCONN_NONE)
return;
capi_cmsg_header(&iif->hcmsg, ap->id, CAPI_DISCONNECT, CAPI_IND,
@@ -668,7 +693,6 @@ static void send_disconnect_ind(struct bc_state *bcs,
}
capi_cmsg2message(&iif->hcmsg, __skb_put(skb, CAPI_DISCONNECT_IND_LEN));
dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
- ap->connected = APCONN_NONE;
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
}
@@ -685,9 +709,9 @@ static void send_disconnect_b3_ind(struct bc_state *bcs,
struct sk_buff *skb;
/* nothing to do if no logical connection active */
- if (ap->connected < APCONN_ACTIVE)
+ if (bcs->apconnstate < APCONN_ACTIVE)
return;
- ap->connected = APCONN_SETUP;
+ bcs->apconnstate = APCONN_SETUP;
capi_cmsg_header(&iif->hcmsg, ap->id, CAPI_DISCONNECT_B3, CAPI_IND,
ap->nextMessageNumber++,
@@ -714,14 +738,25 @@ void gigaset_isdn_connD(struct bc_state *bcs)
{
struct cardstate *cs = bcs->cs;
struct gigaset_capi_ctr *iif = cs->iif;
- struct gigaset_capi_appl *ap = bcs->ap;
+ struct gigaset_capi_appl *ap;
struct sk_buff *skb;
unsigned int msgsize;
+ unsigned long flags;
+ spin_lock_irqsave(&bcs->aplock, flags);
+ ap = bcs->ap;
if (!ap) {
+ spin_unlock_irqrestore(&bcs->aplock, flags);
dev_err(cs->dev, "%s: no application\n", __func__);
return;
}
+ if (bcs->apconnstate == APCONN_NONE) {
+ spin_unlock_irqrestore(&bcs->aplock, flags);
+ dev_warn(cs->dev, "%s: application %u not connected\n",
+ __func__, ap->id);
+ return;
+ }
+ spin_unlock_irqrestore(&bcs->aplock, flags);
while (ap->bcnext) {
/* this should never happen */
dev_warn(cs->dev, "%s: dropping extra application %u\n",
@@ -730,11 +765,6 @@ void gigaset_isdn_connD(struct bc_state *bcs)
CapiCallGivenToOtherApplication);
ap->bcnext = ap->bcnext->bcnext;
}
- if (ap->connected == APCONN_NONE) {
- dev_warn(cs->dev, "%s: application %u not connected\n",
- __func__, ap->id);
- return;
- }
/* prepare CONNECT_ACTIVE_IND message
* Note: LLC not supported by device
@@ -772,17 +802,24 @@ void gigaset_isdn_connD(struct bc_state *bcs)
void gigaset_isdn_hupD(struct bc_state *bcs)
{
struct gigaset_capi_appl *ap;
+ unsigned long flags;
/*
* ToDo: pass on reason code reported by device
* (requires ev-layer state machine extension to collect
* ZCAU device reply)
*/
- for (ap = bcs->ap; ap != NULL; ap = ap->bcnext) {
+ spin_lock_irqsave(&bcs->aplock, flags);
+ while (bcs->ap != NULL) {
+ ap = bcs->ap;
+ bcs->ap = ap->bcnext;
+ spin_unlock_irqrestore(&bcs->aplock, flags);
send_disconnect_b3_ind(bcs, ap);
send_disconnect_ind(bcs, ap, 0);
+ spin_lock_irqsave(&bcs->aplock, flags);
}
- bcs->ap = NULL;
+ bcs->apconnstate = APCONN_NONE;
+ spin_unlock_irqrestore(&bcs->aplock, flags);
}
/**
@@ -796,24 +833,21 @@ void gigaset_isdn_connB(struct bc_state *bcs)
{
struct cardstate *cs = bcs->cs;
struct gigaset_capi_ctr *iif = cs->iif;
- struct gigaset_capi_appl *ap = bcs->ap;
+ struct gigaset_capi_appl *ap;
struct sk_buff *skb;
+ unsigned long flags;
unsigned int msgsize;
u8 command;
+ spin_lock_irqsave(&bcs->aplock, flags);
+ ap = bcs->ap;
if (!ap) {
+ spin_unlock_irqrestore(&bcs->aplock, flags);
dev_err(cs->dev, "%s: no application\n", __func__);
return;
}
- while (ap->bcnext) {
- /* this should never happen */
- dev_warn(cs->dev, "%s: dropping extra application %u\n",
- __func__, ap->bcnext->id);
- send_disconnect_ind(bcs, ap->bcnext,
- CapiCallGivenToOtherApplication);
- ap->bcnext = ap->bcnext->bcnext;
- }
- if (!ap->connected) {
+ if (!bcs->apconnstate) {
+ spin_unlock_irqrestore(&bcs->aplock, flags);
dev_warn(cs->dev, "%s: application %u not connected\n",
__func__, ap->id);
return;
@@ -825,13 +859,26 @@ void gigaset_isdn_connB(struct bc_state *bcs)
* CONNECT_B3_ACTIVE_IND in reply to CONNECT_B3_RESP
* Parameters in both cases always: NCCI = 1, NCPI empty
*/
- if (ap->connected >= APCONN_ACTIVE) {
+ if (bcs->apconnstate >= APCONN_ACTIVE) {
command = CAPI_CONNECT_B3_ACTIVE;
msgsize = CAPI_CONNECT_B3_ACTIVE_IND_BASELEN;
} else {
command = CAPI_CONNECT_B3;
msgsize = CAPI_CONNECT_B3_IND_BASELEN;
}
+ bcs->apconnstate = APCONN_ACTIVE;
+
+ spin_unlock_irqrestore(&bcs->aplock, flags);
+
+ while (ap->bcnext) {
+ /* this should never happen */
+ dev_warn(cs->dev, "%s: dropping extra application %u\n",
+ __func__, ap->bcnext->id);
+ send_disconnect_ind(bcs, ap->bcnext,
+ CapiCallGivenToOtherApplication);
+ ap->bcnext = ap->bcnext->bcnext;
+ }
+
capi_cmsg_header(&iif->hcmsg, ap->id, command, CAPI_IND,
ap->nextMessageNumber++,
iif->ctr.cnr | ((bcs->channel + 1) << 8) | (1 << 16));
@@ -842,7 +889,6 @@ void gigaset_isdn_connB(struct bc_state *bcs)
}
capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize));
dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
- ap->connected = APCONN_ACTIVE;
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
}
@@ -945,8 +991,64 @@ static void gigaset_register_appl(struct capi_ctr *ctr, u16 appl,
return;
}
ap->id = appl;
+ ap->rp = *rp;
list_add(&ap->ctrlist, &iif->appls);
+ dev_info(cs->dev, "application %u registered\n", ap->id);
+}
+
+/*
+ * remove CAPI application from channel
+ * helper function to keep indentation levels down and stay in 80 columns
+ */
+
+static inline void remove_appl_from_channel(struct bc_state *bcs,
+ struct gigaset_capi_appl *ap)
+{
+ struct cardstate *cs = bcs->cs;
+ struct gigaset_capi_appl *bcap;
+ unsigned long flags;
+ int prevconnstate;
+
+ spin_lock_irqsave(&bcs->aplock, flags);
+ bcap = bcs->ap;
+ if (bcap == NULL) {
+ spin_unlock_irqrestore(&bcs->aplock, flags);
+ return;
+ }
+
+ /* check first application on channel */
+ if (bcap == ap) {
+ bcs->ap = ap->bcnext;
+ if (bcs->ap != NULL) {
+ spin_unlock_irqrestore(&bcs->aplock, flags);
+ return;
+ }
+
+ /* none left, clear channel state */
+ prevconnstate = bcs->apconnstate;
+ bcs->apconnstate = APCONN_NONE;
+ spin_unlock_irqrestore(&bcs->aplock, flags);
+
+ if (prevconnstate == APCONN_ACTIVE) {
+ dev_notice(cs->dev, "%s: hanging up channel %u\n",
+ __func__, bcs->channel);
+ gigaset_add_event(cs, &bcs->at_state,
+ EV_HUP, NULL, 0, NULL);
+ gigaset_schedule_event(cs);
+ }
+ return;
+ }
+
+ /* check remaining list */
+ do {
+ if (bcap->bcnext == ap) {
+ bcap->bcnext = bcap->bcnext->bcnext;
+ return;
+ }
+ bcap = bcap->bcnext;
+ } while (bcap != NULL);
+ spin_unlock_irqrestore(&bcs->aplock, flags);
}
/*
@@ -958,19 +1060,19 @@ static void gigaset_release_appl(struct capi_ctr *ctr, u16 appl)
= container_of(ctr, struct gigaset_capi_ctr, ctr);
struct cardstate *cs = iif->ctr.driverdata;
struct gigaset_capi_appl *ap, *tmp;
+ unsigned ch;
list_for_each_entry_safe(ap, tmp, &iif->appls, ctrlist)
if (ap->id == appl) {
- if (ap->connected != APCONN_NONE) {
- dev_err(cs->dev,
- "%s: application %u still connected\n",
- __func__, ap->id);
- /* ToDo: clear active connection */
- }
+ /* remove from any channels */
+ for (ch = 0; ch < cs->channels; ch++)
+ remove_appl_from_channel(&cs->bcs[ch], ap);
+
+ /* remove from registration list */
list_del(&ap->ctrlist);
kfree(ap);
+ dev_info(cs->dev, "application %u released\n", appl);
}
-
}
/*
@@ -1149,7 +1251,8 @@ static void do_connect_req(struct gigaset_capi_ctr *iif,
char **commands;
char *s;
u8 *pp;
- int i, l;
+ unsigned long flags;
+ int i, l, lbc, lhlc;
u16 info;
/* decode message */
@@ -1164,8 +1267,18 @@ static void do_connect_req(struct gigaset_capi_ctr *iif,
send_conf(iif, ap, skb, CapiNoPlciAvailable);
return;
}
+ spin_lock_irqsave(&bcs->aplock, flags);
+ if (bcs->ap != NULL || bcs->apconnstate != APCONN_NONE)
+ dev_warn(cs->dev, "%s: channel not properly cleared (%p/%d)\n",
+ __func__, bcs->ap, bcs->apconnstate);
ap->bcnext = NULL;
bcs->ap = ap;
+ bcs->apconnstate = APCONN_SETUP;
+ spin_unlock_irqrestore(&bcs->aplock, flags);
+
+ bcs->rx_bufsize = ap->rp.datablklen;
+ dev_kfree_skb(bcs->rx_skb);
+ gigaset_new_rx_skb(bcs);
cmsg->adr.adrPLCI |= (bcs->channel + 1) << 8;
/* build command table */
@@ -1273,42 +1386,59 @@ static void do_connect_req(struct gigaset_capi_ctr *iif,
goto error;
}
- /* check/encode parameter: BC */
- if (cmsg->BC && cmsg->BC[0]) {
- /* explicit BC overrides CIP */
- l = 2*cmsg->BC[0] + 7;
+ /*
+ * check/encode parameters: BC & HLC
+ * must be encoded together as device doesn't accept HLC separately
+ * explicit parameters override values derived from CIP
+ */
+
+ /* determine lengths */
+ if (cmsg->BC && cmsg->BC[0]) /* BC specified explicitly */
+ lbc = 2*cmsg->BC[0];
+ else if (cip2bchlc[cmsg->CIPValue].bc) /* BC derived from CIP */
+ lbc = strlen(cip2bchlc[cmsg->CIPValue].bc);
+ else /* no BC */
+ lbc = 0;
+ if (cmsg->HLC && cmsg->HLC[0]) /* HLC specified explicitly */
+ lhlc = 2*cmsg->HLC[0];
+ else if (cip2bchlc[cmsg->CIPValue].hlc) /* HLC derived from CIP */
+ lhlc = strlen(cip2bchlc[cmsg->CIPValue].hlc);
+ else /* no HLC */
+ lhlc = 0;
+
+ if (lbc) {
+ /* have BC: allocate and assemble command string */
+ l = lbc + 7; /* "^SBC=" + value + "\r" + null byte */
+ if (lhlc)
+ l += lhlc + 7; /* ";^SHLC=" + value */
commands[AT_BC] = kmalloc(l, GFP_KERNEL);
if (!commands[AT_BC])
goto oom;
strcpy(commands[AT_BC], "^SBC=");
- decode_ie(cmsg->BC, commands[AT_BC]+5);
+ if (cmsg->BC && cmsg->BC[0]) /* BC specified explicitly */
+ decode_ie(cmsg->BC, commands[AT_BC] + 5);
+ else /* BC derived from CIP */
+ strcpy(commands[AT_BC] + 5,
+ cip2bchlc[cmsg->CIPValue].bc);
+ if (lhlc) {
+ strcpy(commands[AT_BC] + lbc + 5, ";^SHLC=");
+ if (cmsg->HLC && cmsg->HLC[0])
+ /* HLC specified explicitly */
+ decode_ie(cmsg->HLC,
+ commands[AT_BC] + lbc + 12);
+ else /* HLC derived from CIP */
+ strcpy(commands[AT_BC] + lbc + 12,
+ cip2bchlc[cmsg->CIPValue].hlc);
+ }
strcpy(commands[AT_BC] + l - 2, "\r");
- } else if (cip2bchlc[cmsg->CIPValue].bc) {
- l = strlen(cip2bchlc[cmsg->CIPValue].bc) + 7;
- commands[AT_BC] = kmalloc(l, GFP_KERNEL);
- if (!commands[AT_BC])
- goto oom;
- snprintf(commands[AT_BC], l, "^SBC=%s\r",
- cip2bchlc[cmsg->CIPValue].bc);
- }
-
- /* check/encode parameter: HLC */
- if (cmsg->HLC && cmsg->HLC[0]) {
- /* explicit HLC overrides CIP */
- l = 2*cmsg->HLC[0] + 7;
- commands[AT_HLC] = kmalloc(l, GFP_KERNEL);
- if (!commands[AT_HLC])
- goto oom;
- strcpy(commands[AT_HLC], "^SHLC=");
- decode_ie(cmsg->HLC, commands[AT_HLC]+5);
- strcpy(commands[AT_HLC] + l - 2, "\r");
- } else if (cip2bchlc[cmsg->CIPValue].hlc) {
- l = strlen(cip2bchlc[cmsg->CIPValue].hlc) + 7;
- commands[AT_HLC] = kmalloc(l, GFP_KERNEL);
- if (!commands[AT_HLC])
- goto oom;
- snprintf(commands[AT_HLC], l, "^SHLC=%s\r",
- cip2bchlc[cmsg->CIPValue].hlc);
+ } else {
+ /* no BC */
+ if (lhlc) {
+ dev_notice(cs->dev, "%s: cannot set HLC without BC\n",
+ "CONNECT_REQ");
+ info = CapiIllMessageParmCoding; /* ? */
+ goto error;
+ }
}
/* check/encode parameter: B Protocol */
@@ -1322,13 +1452,13 @@ static void do_connect_req(struct gigaset_capi_ctr *iif,
bcs->proto2 = L2_HDLC;
break;
case 1:
- bcs->proto2 = L2_BITSYNC;
+ bcs->proto2 = L2_VOICE;
break;
default:
dev_warn(cs->dev,
"B1 Protocol %u unsupported, using Transparent\n",
cmsg->B1protocol);
- bcs->proto2 = L2_BITSYNC;
+ bcs->proto2 = L2_VOICE;
}
if (cmsg->B2protocol != 1)
dev_warn(cs->dev,
@@ -1382,7 +1512,6 @@ static void do_connect_req(struct gigaset_capi_ctr *iif,
goto error;
}
gigaset_schedule_event(cs);
- ap->connected = APCONN_SETUP;
send_conf(iif, ap, skb, CapiSuccess);
return;
@@ -1410,6 +1539,7 @@ static void do_connect_resp(struct gigaset_capi_ctr *iif,
_cmsg *cmsg = &iif->acmsg;
struct bc_state *bcs;
struct gigaset_capi_appl *oap;
+ unsigned long flags;
int channel;
/* decode message */
@@ -1429,12 +1559,24 @@ static void do_connect_resp(struct gigaset_capi_ctr *iif,
switch (cmsg->Reject) {
case 0: /* Accept */
/* drop all competing applications, keep only this one */
- for (oap = bcs->ap; oap != NULL; oap = oap->bcnext)
- if (oap != ap)
+ spin_lock_irqsave(&bcs->aplock, flags);
+ while (bcs->ap != NULL) {
+ oap = bcs->ap;
+ bcs->ap = oap->bcnext;
+ if (oap != ap) {
+ spin_unlock_irqrestore(&bcs->aplock, flags);
send_disconnect_ind(bcs, oap,
CapiCallGivenToOtherApplication);
+ spin_lock_irqsave(&bcs->aplock, flags);
+ }
+ }
ap->bcnext = NULL;
bcs->ap = ap;
+ spin_unlock_irqrestore(&bcs->aplock, flags);
+
+ bcs->rx_bufsize = ap->rp.datablklen;
+ dev_kfree_skb(bcs->rx_skb);
+ gigaset_new_rx_skb(bcs);
bcs->chstate |= CHS_NOTIFY_LL;
/* check/encode B channel protocol */
@@ -1448,13 +1590,13 @@ static void do_connect_resp(struct gigaset_capi_ctr *iif,
bcs->proto2 = L2_HDLC;
break;
case 1:
- bcs->proto2 = L2_BITSYNC;
+ bcs->proto2 = L2_VOICE;
break;
default:
dev_warn(cs->dev,
"B1 Protocol %u unsupported, using Transparent\n",
cmsg->B1protocol);
- bcs->proto2 = L2_BITSYNC;
+ bcs->proto2 = L2_VOICE;
}
if (cmsg->B2protocol != 1)
dev_warn(cs->dev,
@@ -1502,31 +1644,45 @@ static void do_connect_resp(struct gigaset_capi_ctr *iif,
send_disconnect_ind(bcs, ap, 0);
/* remove it from the list of listening apps */
+ spin_lock_irqsave(&bcs->aplock, flags);
if (bcs->ap == ap) {
bcs->ap = ap->bcnext;
- if (bcs->ap == NULL)
+ if (bcs->ap == NULL) {
/* last one: stop ev-layer hupD notifications */
+ bcs->apconnstate = APCONN_NONE;
bcs->chstate &= ~CHS_NOTIFY_LL;
+ }
+ spin_unlock_irqrestore(&bcs->aplock, flags);
return;
}
for (oap = bcs->ap; oap != NULL; oap = oap->bcnext) {
if (oap->bcnext == ap) {
oap->bcnext = oap->bcnext->bcnext;
+ spin_unlock_irqrestore(&bcs->aplock, flags);
return;
}
}
+ spin_unlock_irqrestore(&bcs->aplock, flags);
dev_err(cs->dev, "%s: application %u not found\n",
__func__, ap->id);
return;
default: /* Reject */
/* drop all competing applications, keep only this one */
- for (oap = bcs->ap; oap != NULL; oap = oap->bcnext)
- if (oap != ap)
+ spin_lock_irqsave(&bcs->aplock, flags);
+ while (bcs->ap != NULL) {
+ oap = bcs->ap;
+ bcs->ap = oap->bcnext;
+ if (oap != ap) {
+ spin_unlock_irqrestore(&bcs->aplock, flags);
send_disconnect_ind(bcs, oap,
CapiCallGivenToOtherApplication);
+ spin_lock_irqsave(&bcs->aplock, flags);
+ }
+ }
ap->bcnext = NULL;
bcs->ap = ap;
+ spin_unlock_irqrestore(&bcs->aplock, flags);
/* reject call - will trigger DISCONNECT_IND for this app */
dev_info(cs->dev, "%s: Reject=%x\n",
@@ -1549,6 +1705,7 @@ static void do_connect_b3_req(struct gigaset_capi_ctr *iif,
{
struct cardstate *cs = iif->ctr.driverdata;
_cmsg *cmsg = &iif->acmsg;
+ struct bc_state *bcs;
int channel;
/* decode message */
@@ -1563,9 +1720,10 @@ static void do_connect_b3_req(struct gigaset_capi_ctr *iif,
send_conf(iif, ap, skb, CapiIllContrPlciNcci);
return;
}
+ bcs = &cs->bcs[channel-1];
/* mark logical connection active */
- ap->connected = APCONN_ACTIVE;
+ bcs->apconnstate = APCONN_ACTIVE;
/* build NCCI: always 1 (one B3 connection only) */
cmsg->adr.adrNCCI |= 1 << 16;
@@ -1611,7 +1769,7 @@ static void do_connect_b3_resp(struct gigaset_capi_ctr *iif,
if (cmsg->Reject) {
/* Reject: clear B3 connect received flag */
- ap->connected = APCONN_SETUP;
+ bcs->apconnstate = APCONN_SETUP;
/* trigger hangup, causing eventual DISCONNECT_IND */
if (!gigaset_add_event(cs, &bcs->at_state,
@@ -1683,11 +1841,11 @@ static void do_disconnect_req(struct gigaset_capi_ctr *iif,
}
/* skip if DISCONNECT_IND already sent */
- if (!ap->connected)
+ if (!bcs->apconnstate)
return;
/* check for active logical connection */
- if (ap->connected >= APCONN_ACTIVE) {
+ if (bcs->apconnstate >= APCONN_ACTIVE) {
/*
* emit DISCONNECT_B3_IND with cause 0x3301
* use separate cmsg structure, as the content of iif->acmsg
@@ -1736,6 +1894,7 @@ static void do_disconnect_b3_req(struct gigaset_capi_ctr *iif,
{
struct cardstate *cs = iif->ctr.driverdata;
_cmsg *cmsg = &iif->acmsg;
+ struct bc_state *bcs;
int channel;
/* decode message */
@@ -1751,17 +1910,17 @@ static void do_disconnect_b3_req(struct gigaset_capi_ctr *iif,
send_conf(iif, ap, skb, CapiIllContrPlciNcci);
return;
}
+ bcs = &cs->bcs[channel-1];
/* reject if logical connection not active */
- if (ap->connected < APCONN_ACTIVE) {
+ if (bcs->apconnstate < APCONN_ACTIVE) {
send_conf(iif, ap, skb,
CapiMessageNotSupportedInCurrentState);
return;
}
/* trigger hangup, causing eventual DISCONNECT_B3_IND */
- if (!gigaset_add_event(cs, &cs->bcs[channel-1].at_state,
- EV_HUP, NULL, 0, NULL)) {
+ if (!gigaset_add_event(cs, &bcs->at_state, EV_HUP, NULL, 0, NULL)) {
send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR);
return;
}
@@ -1782,11 +1941,14 @@ static void do_data_b3_req(struct gigaset_capi_ctr *iif,
struct sk_buff *skb)
{
struct cardstate *cs = iif->ctr.driverdata;
+ struct bc_state *bcs;
int channel = CAPIMSG_PLCI_PART(skb->data);
u16 ncci = CAPIMSG_NCCI_PART(skb->data);
u16 msglen = CAPIMSG_LEN(skb->data);
u16 datalen = CAPIMSG_DATALEN(skb->data);
u16 flags = CAPIMSG_FLAGS(skb->data);
+ u16 msgid = CAPIMSG_MSGID(skb->data);
+ u16 handle = CAPIMSG_HANDLE_REQ(skb->data);
/* frequent message, avoid _cmsg overhead */
dump_rawmsg(DEBUG_LLDATA, "DATA_B3_REQ", skb->data);
@@ -1802,6 +1964,7 @@ static void do_data_b3_req(struct gigaset_capi_ctr *iif,
send_conf(iif, ap, skb, CapiIllContrPlciNcci);
return;
}
+ bcs = &cs->bcs[channel-1];
if (msglen != CAPI_DATA_B3_REQ_LEN && msglen != CAPI_DATA_B3_REQ_LEN64)
dev_notice(cs->dev, "%s: unexpected length %d\n",
"DATA_B3_REQ", msglen);
@@ -1821,7 +1984,7 @@ static void do_data_b3_req(struct gigaset_capi_ctr *iif,
}
/* reject if logical connection not active */
- if (ap->connected < APCONN_ACTIVE) {
+ if (bcs->apconnstate < APCONN_ACTIVE) {
send_conf(iif, ap, skb, CapiMessageNotSupportedInCurrentState);
return;
}
@@ -1832,17 +1995,19 @@ static void do_data_b3_req(struct gigaset_capi_ctr *iif,
skb_pull(skb, msglen);
/* pass to device-specific module */
- if (cs->ops->send_skb(&cs->bcs[channel-1], skb) < 0) {
+ if (cs->ops->send_skb(bcs, skb) < 0) {
send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR);
return;
}
- /* DATA_B3_CONF reply will be sent by gigaset_skb_sent() */
-
/*
- * ToDo: honor unset "delivery confirmation" bit
- * (send DATA_B3_CONF immediately?)
+ * DATA_B3_CONF will be sent by gigaset_skb_sent() only if "delivery
+ * confirmation" bit is set; otherwise we have to send it now
*/
+ if (!(flags & CAPI_FLAGS_DELIVERY_CONFIRMATION))
+ send_data_b3_conf(cs, &iif->ctr, ap->id, msgid, channel, handle,
+ flags ? CapiFlagsNotSupportedByProtocol
+ : CAPI_NOERROR);
}
/*