mISDN: Add layer1 prim MPH_INFORMATION_REQ

MPH_INFORMATION provides full D- and B-Channel status overview

- new layer1 primitive: MPF_INFORMATON_REQ
- layer1 replies with MPH_INFORMATION_IND containing
   - dch->[state,Flags,nrbchan]
   - bch[]->[protocol,Flags]
- hardware driver should send MPH_INFORMATION_IND
  on all ph state changes and BChannel state changes to MISDN_ID_ANY

Signed-off-by: Martin Bachem <m.bachem@gmx.de>
Signed-off-by: Karsten Keil <kkeil@suse.de>

1 files changed, 17 insertions, 0 deletions

diff --git a/include/linux/mISDNif.h b/include/linux/mISDNif.h
index d4229aebf648..557477ac3d5b 100644
--- a/include/linux/mISDNif.h
+++ b/include/linux/mISDNif.h
@@ -289,6 +289,23 @@ struct mISDN_devrename {
         char                    name[MISDN_MAX_IDLEN]; /* new name */
 };
 
+/* MPH_INFORMATION_REQ payload */
+struct ph_info_ch {
+        __u32 protocol;
+        __u64 Flags;
+};
+
+struct ph_info_dch {
+        struct ph_info_ch ch;
+        __u16 state;
+        __u16 num_bch;
+};
+
+struct ph_info {
+        struct ph_info_dch dch;
+        struct ph_info_ch  bch[];
+};
+
 /* timer device ioctl */
 #define IMADDTIMER      _IOR('I', 64, int)
 #define IMDELTIMER      _IOR('I', 65, int)