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isdn/gigaset: handle Supplementary Service Listen

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Add minimal handling for the non-optional CAPI FACILITY_REQ
Supplementary Service function Listen.

Impact: bugfix
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tilman Schmidt 2010-07-05 14:19:04 +00:00 committed by David S. Miller
parent 6a75342a1c
commit 18c2259c14
1 changed files with 26 additions and 1 deletions
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27
drivers/isdn/gigaset/capi.c
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@ -45,6 +45,7 @@
#define CAPI_FACILITY_LI 0x0005
#define CAPI_SUPPSVC_GETSUPPORTED 0x0000
#define CAPI_SUPPSVC_LISTEN 0x0001
/* missing from capiutil.h */
#define CAPIMSG_PLCI_PART(m) CAPIMSG_U8(m, 9)
@ -1151,7 +1152,7 @@ static void do_facility_req(struct gigaset_capi_ctr *iif,
case CAPI_FACILITY_SUPPSVC:
/* decode Function parameter */
pparam = cmsg->FacilityRequestParameter;
if (pparam == NULL || *pparam < 2) {
if (pparam == NULL || pparam[0] < 2) {
dev_notice(cs->dev, "%s: %s missing\n", "FACILITY_REQ",
"Facility Request Parameter");
send_conf(iif, ap, skb, CapiIllMessageParmCoding);
@ -1168,8 +1169,32 @@ static void do_facility_req(struct gigaset_capi_ctr *iif,
/* Supported Services: none */
capimsg_setu32(confparam, 6, 0);
break;
case CAPI_SUPPSVC_LISTEN:
if (pparam[0] < 7 || pparam[3] < 4) {
dev_notice(cs->dev, "%s: %s missing\n",
"FACILITY_REQ", "Notification Mask");
send_conf(iif, ap, skb,
CapiIllMessageParmCoding);
return;
}
if (CAPIMSG_U32(pparam, 4) != 0) {
dev_notice(cs->dev,
"%s: unsupported supplementary service notification mask 0x%x\n",
"FACILITY_REQ", CAPIMSG_U32(pparam, 4));
info = CapiFacilitySpecificFunctionNotSupported;
confparam[3] = 2; /* length */
capimsg_setu16(confparam, 4,
CapiSupplementaryServiceNotSupported);
}
info = CapiSuccess;
confparam[3] = 2; /* length */
capimsg_setu16(confparam, 4, CapiSuccess);
break;
/* ToDo: add supported services */
default:
dev_notice(cs->dev,
"%s: unsupported supplementary service function 0x%04x\n",
"FACILITY_REQ", function);
info = CapiFacilitySpecificFunctionNotSupported;
/* Supplementary Service specific parameter */
confparam[3] = 2; /* length */