Remove ISDN4BSD (I4B) from HEAD as it is not MPSAFE and

parts relied on the now removed NET_NEEDS_GIANT.
Most of I4B has been disconnected from the build
since July 2007 in HEAD/RELENG_7.

This is what was removed:
- configuration in /etc/isdn
- examples
- man pages
- kernel configuration
- sys/i4b (drivers, layers, include files)
- user space tools
- i4b support from ppp
- further documentation

Discussed with: rwatson, re

7 files changed, 2 insertions, 282 deletions

diff --git a/sys/conf/files b/sys/conf/files
index 4b9afc7..4e1dbc5 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -1511,62 +1511,6 @@ gnu/fs/reiserfs/reiserfs_stree.c	optional reiserfs
 gnu/fs/reiserfs/reiserfs_vfsops.c	optional reiserfs
 gnu/fs/reiserfs/reiserfs_vnops.c	optional reiserfs
 #
-# isdn4bsd device drivers
-#
-i4b/driver/i4b_trace.c		optional i4btrc
-i4b/driver/i4b_rbch.c		optional i4brbch
-i4b/driver/i4b_tel.c		optional i4btel
-#XXXBZ#i4b/driver/i4b_ipr.c		optional i4bipr
-net/slcompress.c		optional i4bipr | i4bisppp
-i4b/driver/i4b_ctl.c		optional i4bctl
-#XXXBZ#i4b/driver/i4b_ing.c		optional i4bing
-#XXXBZ#i4b/driver/i4b_isppp.c		optional i4bisppp
-#
-# isdn4bsd CAPI driver
-#
-i4b/capi/capi_l4if.c		optional i4bcapi
-i4b/capi/capi_llif.c		optional i4bcapi
-i4b/capi/capi_msgs.c		optional i4bcapi
-#
-# isdn4bsd AVM B1/T1 CAPI driver
-#
-i4b/capi/iavc/iavc_pci.c	optional iavc i4bcapi pci
-i4b/capi/iavc/iavc_isa.c	optional iavc i4bcapi isa
-i4b/capi/iavc/iavc_lli.c	optional iavc i4bcapi
-i4b/capi/iavc/iavc_card.c	optional iavc i4bcapi
-#
-# isdn4bsd support
-#
-i4b/layer2/i4b_mbuf.c		optional i4btrc
-#
-# isdn4bsd Q.921 handler
-#
-i4b/layer2/i4b_l2.c		optional i4bq921
-i4b/layer2/i4b_l2fsm.c		optional i4bq921
-i4b/layer2/i4b_uframe.c		optional i4bq921
-i4b/layer2/i4b_tei.c		optional i4bq921
-i4b/layer2/i4b_sframe.c		optional i4bq921
-i4b/layer2/i4b_iframe.c		optional i4bq921
-i4b/layer2/i4b_l2timer.c	optional i4bq921
-i4b/layer2/i4b_util.c		optional i4bq921
-i4b/layer2/i4b_lme.c		optional i4bq921
-#
-# isdn4bsd Q.931 handler
-#
-i4b/layer3/i4b_q931.c		optional i4bq931
-i4b/layer3/i4b_l3fsm.c		optional i4bq931
-i4b/layer3/i4b_l3timer.c	optional i4bq931
-i4b/layer3/i4b_l2if.c		optional i4bq931
-i4b/layer3/i4b_l4if.c		optional i4bq931
-i4b/layer3/i4b_q932fac.c	optional i4bq931
-#
-# isdn4bsd control device driver, interface to isdnd
-#
-i4b/layer4/i4b_i4bdrv.c		optional i4b
-i4b/layer4/i4b_l4.c		optional i4b
-i4b/layer4/i4b_l4mgmt.c		optional i4b
-i4b/layer4/i4b_l4timer.c	optional i4b
-#
 isa/isa_if.m			standard
 isa/isa_common.c		optional isa
 isa/isahint.c			optional isa
@@ -1814,8 +1758,8 @@ net/if_media.c			standard
 net/if_mib.c			standard
 net/if_ppp.c			optional ppp
 net/if_sl.c			optional sl
-net/if_spppfr.c			optional i4bisppp | sppp | netgraph_sppp
-net/if_spppsubr.c		optional i4bisppp | sppp | netgraph_sppp
+net/if_spppfr.c			optional sppp | netgraph_sppp
+net/if_spppsubr.c		optional sppp | netgraph_sppp
 net/if_stf.c			optional stf
 net/if_tun.c			optional tun
 net/if_tap.c			optional tap
diff --git a/sys/conf/files.i386 b/sys/conf/files.i386
index afc7a91..292d273 100644
--- a/sys/conf/files.i386
+++ b/sys/conf/files.i386
@@ -366,83 +366,6 @@ i386/svr4/svr4_locore.s		optional compat_svr4	\
 	warning "COMPAT_SVR4 is broken and should be avoided"
 i386/svr4/svr4_machdep.c	optional compat_svr4
 #
-# isdn4bsd, needed for isic | iwic | ifpi | ifpi2 | ihfc | ifpnp | itjc
-#
-i4b/layer1/i4b_hdlc.c		optional ihfc | itjc
-i4b/layer1/i4b_l1dmux.c		optional ifpi | ifpi2 | ifpnp | \
-					 ihfc | isic | itjc | iwic
-i4b/layer1/i4b_l1lib.c		optional ifpi | ifpi2 | ifpnp | \
-					 ihfc | isic | itjc | iwic
-#
-# isdn4bsd, isic
-#
-i4b/layer1/isic/i4b_asuscom_ipac.c optional isic
-i4b/layer1/isic/i4b_avm_a1.c	optional isic
-i4b/layer1/isic/i4b_bchan.c	optional isic
-i4b/layer1/isic/i4b_ctx_s0P.c	optional isic
-i4b/layer1/isic/i4b_drn_ngo.c	optional isic
-i4b/layer1/isic/i4b_dynalink.c	optional isic
-i4b/layer1/isic/i4b_elsa_qs1i.c	optional isic
-i4b/layer1/isic/i4b_elsa_qs1p.c	optional isic pci
-i4b/layer1/isic/i4b_elsa_pcc16.c optional isic
-i4b/layer1/isic/i4b_hscx.c	optional isic
-i4b/layer1/isic/i4b_isac.c	optional isic
-i4b/layer1/isic/i4b_isic.c	optional isic
-i4b/layer1/isic/i4b_isic_isa.c	optional isic
-i4b/layer1/isic/i4b_isic_pnp.c	optional isic
-i4b/layer1/isic/i4b_itk_ix1.c	optional isic
-i4b/layer1/isic/i4b_l1.c	optional isic
-i4b/layer1/isic/i4b_l1fsm.c	optional isic
-i4b/layer1/isic/i4b_siemens_isurf.c optional isic
-i4b/layer1/isic/i4b_sws.c	optional isic
-i4b/layer1/isic/i4b_tel_s016.c	optional isic
-i4b/layer1/isic/i4b_tel_s0163.c	optional isic
-i4b/layer1/isic/i4b_tel_s08.c	optional isic
-i4b/layer1/isic/i4b_usr_sti.c	optional isic
-i4b/layer1/isic/i4b_diva.c	optional isic
-#
-# isdn4bsd, iwic
-#
-i4b/layer1/iwic/i4b_iwic_pci.c	optional iwic pci
-i4b/layer1/iwic/i4b_iwic_dchan.c optional iwic pci
-i4b/layer1/iwic/i4b_iwic_bchan.c optional iwic pci
-i4b/layer1/iwic/i4b_iwic_fsm.c	optional iwic pci
-i4b/layer1/iwic/i4b_iwic_l1if.c	optional iwic pci
-#
-# isdn4bsd, ifpi
-#
-i4b/layer1/ifpi/i4b_ifpi_pci.c	optional ifpi pci
-i4b/layer1/ifpi/i4b_ifpi_isac.c	optional ifpi pci
-i4b/layer1/ifpi/i4b_ifpi_l1.c	optional ifpi pci
-i4b/layer1/ifpi/i4b_ifpi_l1fsm.c optional ifpi pci
-#
-# isdn4bsd, ifpi2
-#
-i4b/layer1/ifpi2/i4b_ifpi2_pci.c optional ifpi2 pci
-i4b/layer1/ifpi2/i4b_ifpi2_isacsx.c optional ifpi2 pci
-i4b/layer1/ifpi2/i4b_ifpi2_l1.c	optional ifpi2 pci
-i4b/layer1/ifpi2/i4b_ifpi2_l1fsm.c optional ifpi2 pci
-#
-# isdn4bsd, ifpnp
-#
-i4b/layer1/ifpnp/i4b_ifpnp_avm.c optional ifpnp
-i4b/layer1/ifpnp/i4b_ifpnp_isac.c optional ifpnp
-i4b/layer1/ifpnp/i4b_ifpnp_l1.c	 optional ifpnp
-i4b/layer1/ifpnp/i4b_ifpnp_l1fsm.c optional ifpnp
-#
-# isdn4bsd, ihfc
-#
-i4b/layer1/ihfc/i4b_ihfc_l1if.c	optional ihfc
-i4b/layer1/ihfc/i4b_ihfc_pnp.c	optional ihfc
-i4b/layer1/ihfc/i4b_ihfc_drv.c	optional ihfc
-#
-# isdn4bsd, itjc
-#
-i4b/layer1/itjc/i4b_itjc_pci.c	optional itjc
-i4b/layer1/itjc/i4b_itjc_isac.c	optional itjc
-i4b/layer1/itjc/i4b_itjc_l1.c	optional itjc
-i4b/layer1/itjc/i4b_itjc_l1fsm.c optional itjc
-#
 isa/atrtc.c			standard
 isa/syscons_isa.c		optional sc
 isa/vga_isa.c			optional vga
diff --git a/sys/conf/files.pc98 b/sys/conf/files.pc98
index 97d85f6..68638c8 100644
--- a/sys/conf/files.pc98
+++ b/sys/conf/files.pc98
@@ -237,83 +237,6 @@ i386/svr4/svr4_locore.s		optional compat_svr4	\
 	warning "COMPAT_SVR4 is broken and should be avoided"
 i386/svr4/svr4_machdep.c	optional compat_svr4
 #
-# isdn4bsd, needed for isic | iwic | ifpi | ifpi2 | ihfc | ifpnp | itjc
-#
-i4b/layer1/i4b_hdlc.c		optional ihfc | itjc
-i4b/layer1/i4b_l1dmux.c		optional ifpi | ifpi2 | ifpnp | \
-					 ihfc | isic | itjc | iwic
-i4b/layer1/i4b_l1lib.c		optional ifpi | ifpi2 | ifpnp | \
-					 ihfc | isic | itjc | iwic
-#
-# isdn4bsd, isic
-#
-i4b/layer1/isic/i4b_asuscom_ipac.c optional isic
-i4b/layer1/isic/i4b_avm_a1.c	optional isic
-i4b/layer1/isic/i4b_bchan.c	optional isic
-i4b/layer1/isic/i4b_ctx_s0P.c	optional isic
-i4b/layer1/isic/i4b_drn_ngo.c	optional isic
-i4b/layer1/isic/i4b_dynalink.c	optional isic
-i4b/layer1/isic/i4b_elsa_qs1i.c	optional isic
-i4b/layer1/isic/i4b_elsa_qs1p.c	optional isic pci
-i4b/layer1/isic/i4b_elsa_pcc16.c optional isic
-i4b/layer1/isic/i4b_hscx.c	optional isic
-i4b/layer1/isic/i4b_isac.c	optional isic
-i4b/layer1/isic/i4b_isic.c	optional isic
-i4b/layer1/isic/i4b_isic_isa.c	optional isic
-i4b/layer1/isic/i4b_isic_pnp.c	optional isic
-i4b/layer1/isic/i4b_itk_ix1.c	optional isic
-i4b/layer1/isic/i4b_l1.c	optional isic
-i4b/layer1/isic/i4b_l1fsm.c	optional isic
-i4b/layer1/isic/i4b_siemens_isurf.c optional isic
-i4b/layer1/isic/i4b_sws.c	optional isic
-i4b/layer1/isic/i4b_tel_s016.c	optional isic
-i4b/layer1/isic/i4b_tel_s0163.c	optional isic
-i4b/layer1/isic/i4b_tel_s08.c	optional isic
-i4b/layer1/isic/i4b_usr_sti.c	optional isic
-i4b/layer1/isic/i4b_diva.c	optional isic
-#
-# isdn4bsd, iwic
-#
-i4b/layer1/iwic/i4b_iwic_pci.c	optional iwic pci
-i4b/layer1/iwic/i4b_iwic_dchan.c optional iwic pci
-i4b/layer1/iwic/i4b_iwic_bchan.c optional iwic pci
-i4b/layer1/iwic/i4b_iwic_fsm.c	optional iwic pci
-i4b/layer1/iwic/i4b_iwic_l1if.c	optional iwic pci
-#
-# isdn4bsd, ifpi
-#
-i4b/layer1/ifpi/i4b_ifpi_pci.c	optional ifpi pci
-i4b/layer1/ifpi/i4b_ifpi_isac.c	optional ifpi pci
-i4b/layer1/ifpi/i4b_ifpi_l1.c	optional ifpi pci
-i4b/layer1/ifpi/i4b_ifpi_l1fsm.c optional ifpi pci
-#
-# isdn4bsd, ifpi2
-#
-i4b/layer1/ifpi2/i4b_ifpi2_pci.c optional ifpi2 pci
-i4b/layer1/ifpi2/i4b_ifpi2_isacsx.c optional ifpi2 pci
-i4b/layer1/ifpi2/i4b_ifpi2_l1.c	optional ifpi2 pci
-i4b/layer1/ifpi2/i4b_ifpi2_l1fsm.c optional ifpi2 pci
-#
-# isdn4bsd, ifpnp
-#
-i4b/layer1/ifpnp/i4b_ifpnp_avm.c optional ifpnp
-i4b/layer1/ifpnp/i4b_ifpnp_isac.c optional ifpnp
-i4b/layer1/ifpnp/i4b_ifpnp_l1.c	 optional ifpnp
-i4b/layer1/ifpnp/i4b_ifpnp_l1fsm.c optional ifpnp
-#
-# isdn4bsd, ihfc
-#
-i4b/layer1/ihfc/i4b_ihfc_l1if.c	optional ihfc
-i4b/layer1/ihfc/i4b_ihfc_pnp.c	optional ihfc
-i4b/layer1/ihfc/i4b_ihfc_drv.c	optional ihfc
-#
-# isdn4bsd, itjc
-#
-i4b/layer1/itjc/i4b_itjc_pci.c	optional itjc
-i4b/layer1/itjc/i4b_itjc_isac.c	optional itjc
-i4b/layer1/itjc/i4b_itjc_l1.c	optional itjc
-i4b/layer1/itjc/i4b_itjc_l1fsm.c optional itjc
-#
 kern/imgact_aout.c		optional compat_aout
 kern/imgact_gzip.c		optional gzip
 libkern/divdi3.c		standard
diff --git a/sys/conf/options b/sys/conf/options
index 8be2ed7..7e5c9c5 100644
--- a/sys/conf/options
+++ b/sys/conf/options
@@ -743,14 +743,6 @@ DCONS_POLL_HZ		opt_dcons.h
 DCONS_FORCE_CONSOLE	opt_dcons.h
 DCONS_FORCE_GDB		opt_dcons.h
 
-# Static unit counts
-NI4BTRC			opt_i4b.h
-NI4BRBCH		opt_i4b.h
-NI4BTEL			opt_i4b.h
-#XXXBZ#NI4BIPR			opt_i4b.h
-#XXXBZ#NI4BING			opt_i4b.h
-#XXXBZ#NI4BISPPP		opt_i4b.h
-
 # VFS options
 LOOKUP_SHARED		opt_vfs.h
 
diff --git a/sys/conf/options.amd64 b/sys/conf/options.amd64
index 00faf95..9a5e7dd 100644
--- a/sys/conf/options.amd64
+++ b/sys/conf/options.amd64
@@ -40,19 +40,6 @@ VGA_WIDTH90		opt_vga.h
 ATKBD_DFLT_KEYMAP	opt_atkbd.h
 
 # -------------------------------
-# isdn4bsd: passive PCI cards
-# -------------------------------
-ELSA_QS1PCI		opt_i4b.h
-# -------------------------------
-# isdn4bsd: misc options
-# -------------------------------
-# temporary workaround for SMP machines
-I4B_SMP_WORKAROUND	opt_i4b.h
-# enable VJ compression code for ipr i/f
-#XXXBZ#IPR_VJ			opt_i4b.h
-#XXXBZ#IPR_LOG			opt_i4b.h
-
-# -------------------------------
 # EOF
 # -------------------------------
 HAMMER			opt_cpu.h
diff --git a/sys/conf/options.i386 b/sys/conf/options.i386
index 8cdaa5e..5d8e0b7 100644
--- a/sys/conf/options.i386
+++ b/sys/conf/options.i386
@@ -102,42 +102,6 @@ SPIGOT_UNSECURE		opt_spigot.h
 # Enables NETGRAPH support for Cronyx adapters
 NETGRAPH_CRONYX		opt_ng_cronyx.h
 
-# -------------------------------
-# isdn4bsd: passive ISA cards
-# -------------------------------
-TEL_S0_8		opt_i4b.h
-TEL_S0_16		opt_i4b.h
-TEL_S0_16_3		opt_i4b.h
-AVM_A1			opt_i4b.h
-USR_STI			opt_i4b.h
-ITKIX1			opt_i4b.h
-ELSA_PCC16		opt_i4b.h
-# -------------------------------
-# isdn4bsd: passive ISA PnP cards
-# -------------------------------
-CRTX_S0_P		opt_i4b.h
-DRN_NGO			opt_i4b.h
-TEL_S0_16_3_P		opt_i4b.h
-SEDLBAUER		opt_i4b.h
-DYNALINK		opt_i4b.h
-ASUSCOM_IPAC		opt_i4b.h
-ELSA_QS1ISA		opt_i4b.h
-SIEMENS_ISURF2		opt_i4b.h
-EICON_DIVA		opt_i4b.h
-COMPAQ_M610		opt_i4b.h
-# -------------------------------
-# isdn4bsd: passive PCI cards
-# -------------------------------
-ELSA_QS1PCI		opt_i4b.h
-# -------------------------------
-# isdn4bsd: misc options
-# -------------------------------
-# temporary workaround for SMP machines
-I4B_SMP_WORKAROUND	opt_i4b.h
-# enable VJ compression code for ipr i/f
-#XXXBZ#IPR_VJ			opt_i4b.h
-#XXXBZ#IPR_LOG			opt_i4b.h
-
 # Device options
 DEV_APIC		opt_apic.h
 DEV_NPX			opt_npx.h
diff --git a/sys/conf/options.pc98 b/sys/conf/options.pc98
index d910ff2..d0c8bbb 100644
--- a/sys/conf/options.pc98
+++ b/sys/conf/options.pc98
@@ -77,19 +77,6 @@ SPIGOT_UNSECURE		opt_spigot.h
 # Enables NETGRAPH support for Cronyx adapters
 NETGRAPH_CRONYX		opt_ng_cronyx.h
 
-# -------------------------------
-# isdn4bsd: passive PCI cards
-# -------------------------------
-ELSA_QS1PCI		opt_i4b.h
-# -------------------------------
-# isdn4bsd: misc options
-# -------------------------------
-# temporary workaround for SMP machines
-I4B_SMP_WORKAROUND	opt_i4b.h
-# enable VJ compression code for ipr i/f
-#XXXBZ#IPR_VJ			opt_i4b.h
-#XXXBZ#IPR_LOG			opt_i4b.h
-
 # ct driver options
 CT_BUS_WEIGHT		opt_ct.h
 CT_USE_RELOCATE_OFFSET	opt_ct.h