Harald Welte has uploaded this change for review. ( 
https://gerrit.osmocom.org/9783


Change subject: remove "channel" layer
......................................................................

remove "channel" layer

The "channel" layer on top of IPA client + server was introduced in
2011 but never used in any osmocom program/project so far.  Contrary
to the several other IPA multiplex related implementations in libosmo*,
it did not deal properly with segmented IPA messages, i.e. where a
single TCP segment (and hence recv/read call) does not contain a full
IPA message.

So rather than fixing it up and having yet another IPA related API in
our libraries, let's remove it.

Change-Id: I97c378750acb1637ee032fa88a968edf68d8979f
---
M .gitignore
M configure.ac
M examples/Makefile.am
D examples/channel/Makefile.am
D examples/channel/abis_ipa_stream_client.c
D examples/channel/abis_ipa_stream_server.c
M include/osmocom/netif/Makefile.am
D include/osmocom/netif/channel.h
D include/osmocom/netif/channel/Makefile.am
D include/osmocom/netif/channel/abis_ipa_client.h
D include/osmocom/netif/channel/abis_ipa_server.h
M src/Makefile.am
D src/channel.c
D src/channel/Makefile.am
D src/channel/abis/Makefile.am
D src/channel/abis/ipa_stream_client.c
D src/channel/abis/ipa_stream_server.c
M src/ipa.c
18 files changed, 1 insertion(+), 1,141 deletions(-)



  git pull ssh://gerrit.osmocom.org:29418/libosmo-netif refs/changes/83/9783/1

diff --git a/.gitignore b/.gitignore
index 350e975..31b7a15 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,8 +35,6 @@
 tests/osmux/osmux_test
 tests/testsuite.log

-examples/channel/abis_ipa_stream_client
-examples/channel/abis_ipa_stream_server
 examples/ipa-stream-client
 examples/ipa-stream-server
 examples/lapd-over-datagram-network
diff --git a/configure.ac b/configure.ac
index a04390c..f9346c0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -118,12 +118,8 @@
        include/Makefile
        include/osmocom/Makefile
        include/osmocom/netif/Makefile
-       include/osmocom/netif/channel/Makefile
        src/Makefile
-       src/channel/Makefile
-       src/channel/abis/Makefile
        examples/Makefile
-       examples/channel/Makefile
        tests/Makefile
        Doxyfile
        Makefile)
diff --git a/examples/Makefile.am b/examples/Makefile.am
index df13808..52f4c83 100644
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -2,8 +2,6 @@
 AM_CFLAGS=-Wall -g $(LIBOSMOCORE_CFLAGS) $(LIBOSMOGSM_CFLAGS) 
$(LIBOSMOABIS_CFLAGS) $(COVERAGE_CFLAGS)
 AM_LDFLAGS = $(COVERAGE_LDFLAGS)

-SUBDIRS = channel
-
 noinst_PROGRAMS = ipa-stream-client            \
                  ipa-stream-server             \
                  lapd-over-datagram-user       \
diff --git a/examples/channel/Makefile.am b/examples/channel/Makefile.am
deleted file mode 100644
index c417909..0000000
--- a/examples/channel/Makefile.am
+++ /dev/null
@@ -1,14 +0,0 @@
-AM_CPPFLAGS = -I$(top_srcdir)/include
-AM_CFLAGS=-Wall -g $(LIBOSMOCORE_CFLAGS) $(LIBOSMOGSM_CFLAGS) 
$(LIBOSMOABIS_CFLAGS) $(COVERAGE_CFLAGS)
-AM_LDFLAGS = $(COVERAGE_LDFLAGS)
-
-noinst_PROGRAMS = abis_ipa_stream_server       \
-                 abis_ipa_stream_client
-
-abis_ipa_stream_server_SOURCES = abis_ipa_stream_server.c
-abis_ipa_stream_server_LDADD = $(top_builddir)/src/libosmonetif.la     \
-                              $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS)
-
-abis_ipa_stream_client_SOURCES = abis_ipa_stream_client.c
-abis_ipa_stream_client_LDADD = $(top_builddir)/src/libosmonetif.la     \
-                              $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS)
diff --git a/examples/channel/abis_ipa_stream_client.c 
b/examples/channel/abis_ipa_stream_client.c
deleted file mode 100644
index 8795cc6..0000000
--- a/examples/channel/abis_ipa_stream_client.c
+++ /dev/null
@@ -1,92 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <osmocom/core/select.h>
-#include <osmocom/core/talloc.h>
-#include <osmocom/core/msgb.h>
-#include <osmocom/core/logging.h>
-#include <osmocom/core/application.h>
-
-#include <osmocom/netif/channel.h>
-#include <osmocom/netif/channel/abis_ipa_client.h>
-#include <osmocom/netif/ipa_unit.h>
-
-static void *tall_example;
-
-#define DEXAMPLE 0
-
-struct log_info_cat example_cat[] = {
-       [DEXAMPLE] = {
-               .name = "DEXAMPLE",
-               .description = "example",
-               .color = "\033[1;35m",
-               .enabled = 1, .loglevel = LOGL_DEBUG,
-       },
-};
-
-const struct log_info example_log_info = {
-       .filter_fn = NULL,
-       .cat = example_cat,
-       .num_cat = ARRAY_SIZE(example_cat),
-};
-
-void sighandler(int foo)
-{
-       LOGP(DEXAMPLE, LOGL_NOTICE, "closing test.\n");
-       exit(EXIT_SUCCESS);
-}
-
-static void signal_msg_cb(struct msgb *msg, int type)
-{
-       LOGP(DEXAMPLE, LOGL_NOTICE, "received signal message\n");
-}
-
-static struct osmo_chan *chan;
-
-int main(void)
-{
-       struct osmo_ipa_unit *unit;
-
-       tall_example = talloc_named_const(NULL, 1, "example");
-       msgb_talloc_ctx_init(tall_example, 0);
-       osmo_init_logging2(tall_example, &example_log_info);
-       log_set_log_level(osmo_stderr_target, LOGL_DEBUG);
-
-       /* initialize channel infrastructure. */
-       osmo_chan_init(tall_example);
-
-       /* create channel. */
-       chan = osmo_chan_create(OSMO_CHAN_ABIS_IPA_CLI, OSMO_SUBCHAN_STREAM);
-       if (chan == NULL) {
-               LOGP(DEXAMPLE, LOGL_ERROR, "Cannot create A-bis IPA client\n");
-               exit(EXIT_FAILURE);
-       }
-
-       /* set specific parameters (depends on channel type). */
-       osmo_abis_ipa_cli_set_oml_addr(chan, "127.0.0.1");
-       osmo_abis_ipa_cli_set_rsl_addr(chan, "127.0.0.1");
-
-       unit = osmo_ipa_unit_alloc(0);
-       if (unit == NULL) {
-               LOGP(DEXAMPLE, LOGL_ERROR, "Cannot create IPA unit\n");
-               exit(EXIT_FAILURE);
-       }
-       osmo_ipa_unit_set_site_id(unit, 1801);
-
-       osmo_abis_ipa_cli_set_unit(chan, unit);
-       osmo_abis_ipa_cli_set_cb_signalmsg(chan, signal_msg_cb);
-
-       /* open channel. */
-       if (osmo_chan_open(chan) < 0) {
-               LOGP(DEXAMPLE, LOGL_ERROR, "Cannot create A-bis IPA client\n");
-               exit(EXIT_FAILURE);
-       }
-
-       LOGP(DEXAMPLE, LOGL_NOTICE, "Entering main loop\n");
-
-       while(1) {
-               osmo_select_main(0);
-       }
-}
diff --git a/examples/channel/abis_ipa_stream_server.c 
b/examples/channel/abis_ipa_stream_server.c
deleted file mode 100644
index 58a4e15..0000000
--- a/examples/channel/abis_ipa_stream_server.c
+++ /dev/null
@@ -1,79 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <osmocom/core/select.h>
-#include <osmocom/core/talloc.h>
-#include <osmocom/core/msgb.h>
-#include <osmocom/core/logging.h>
-#include <osmocom/core/application.h>
-
-#include <osmocom/netif/channel.h>
-#include <osmocom/netif/channel/abis_ipa_server.h>
-
-static void *tall_example;
-
-#define DEXAMPLE 0
-
-struct log_info_cat example_cat[] = {
-       [DEXAMPLE] = {
-               .name = "DEXAMPLE",
-               .description = "example",
-               .color = "\033[1;35m",
-               .enabled = 1, .loglevel = LOGL_DEBUG,
-       },
-};
-
-const struct log_info example_log_info = {
-       .filter_fn = NULL,
-       .cat = example_cat,
-       .num_cat = ARRAY_SIZE(example_cat),
-};
-
-void sighandler(int foo)
-{
-       LOGP(DEXAMPLE, LOGL_NOTICE, "closing test.\n");
-       exit(EXIT_SUCCESS);
-}
-
-static void signal_msg_cb(struct msgb *msg, int type)
-{
-       LOGP(DEXAMPLE, LOGL_NOTICE, "received signal message\n");
-}
-
-static struct osmo_chan *chan;
-
-int main(void)
-{
-       tall_example = talloc_named_const(NULL, 1, "example");
-       msgb_talloc_ctx_init(tall_example, 0);
-       osmo_init_logging2(tall_example, &example_log_info);
-       log_set_log_level(osmo_stderr_target, LOGL_DEBUG);
-
-       /* initialize channel infrastructure. */
-       osmo_chan_init(tall_example);
-
-       /* create channel. */
-       chan = osmo_chan_create(OSMO_CHAN_ABIS_IPA_SRV, OSMO_SUBCHAN_STREAM);
-       if (chan == NULL) {
-               LOGP(DEXAMPLE, LOGL_ERROR, "Cannot create A-bis IPA server\n");
-               exit(EXIT_FAILURE);
-       }
-
-       /* set specific parameters (depends on channel type). */
-       osmo_abis_ipa_srv_set_cb_signalmsg(chan, signal_msg_cb);
-       osmo_abis_ipa_unit_add(chan, 1801, 0);
-
-       /* open channel. */
-       if (osmo_chan_open(chan) < 0) {
-               LOGP(DEXAMPLE, LOGL_ERROR, "Cannot create A-bis IPA server\n");
-               exit(EXIT_FAILURE);
-       }
-
-       LOGP(DEXAMPLE, LOGL_NOTICE, "Entering main loop\n");
-
-       while(1) {
-               osmo_select_main(0);
-       }
-}
diff --git a/include/osmocom/netif/Makefile.am 
b/include/osmocom/netif/Makefile.am
index 0db78fb..39df08a 100644
--- a/include/osmocom/netif/Makefile.am
+++ b/include/osmocom/netif/Makefile.am
@@ -1,7 +1,4 @@
-SUBDIRS = channel
-
 osmonetif_HEADERS = amr.h              \
-                   channel.h           \
                    datagram.h          \
                    jibuf.h             \
                    osmux.h             \
diff --git a/include/osmocom/netif/channel.h b/include/osmocom/netif/channel.h
deleted file mode 100644
index 1abc828..0000000
--- a/include/osmocom/netif/channel.h
+++ /dev/null
@@ -1,54 +0,0 @@
-#ifndef _CHANNEL_H_
-#define _CHANNEL_H_
-
-#include <stdint.h>
-
-/* channel types */
-enum {
-       OSMO_CHAN_NONE,
-       OSMO_CHAN_ABIS_IPA_SRV,
-       OSMO_CHAN_ABIS_IPA_CLI,
-       OSMO_CHAN_MAX,
-};
-
-/* channel subtypes */
-enum {
-       OSMO_SUBCHAN_STREAM,
-       OSMO_SUBCHAN_MAX,
-};
-
-struct osmo_chan;
-struct msgb;
-
-struct osmo_chan_type {
-       struct llist_head head;
-
-       char    *name;
-       int     type;
-       int     subtype;
-       int     datasiz;
-
-       int     (*create)(struct osmo_chan *chan);
-       void    (*destroy)(struct osmo_chan *chan);
-       int     (*open)(struct osmo_chan *chan);
-       void    (*close)(struct osmo_chan *chan);
-       int     (*enqueue)(struct osmo_chan *chan, struct msgb *msg);
-};
-
-struct osmo_chan {
-       void                    *ctx;
-       struct osmo_chan_type   *ops;
-       char                    data[0];
-};
-
-void osmo_chan_init(void *ctx);
-
-struct osmo_chan *osmo_chan_create(int type, int subtype);
-void osmo_chan_destroy(struct osmo_chan *c);
-
-int osmo_chan_open(struct osmo_chan *c);
-void osmo_chan_close(struct osmo_chan *c);
-
-int osmo_chan_enqueue(struct osmo_chan *c, struct msgb *msg);
-
-#endif /* _CHANNEL_H_ */
diff --git a/include/osmocom/netif/channel/Makefile.am 
b/include/osmocom/netif/channel/Makefile.am
deleted file mode 100644
index dec19b2..0000000
--- a/include/osmocom/netif/channel/Makefile.am
+++ /dev/null
@@ -1,3 +0,0 @@
-osmonetif_channel_HEADERS = abis_ipa_server.h abis_ipa_client.h
-
-osmonetif_channeldir = $(includedir)/osmocom/netif/channel
diff --git a/include/osmocom/netif/channel/abis_ipa_client.h 
b/include/osmocom/netif/channel/abis_ipa_client.h
deleted file mode 100644
index cd35852..0000000
--- a/include/osmocom/netif/channel/abis_ipa_client.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#ifndef _OSMO_ABIS_IPA_CLIENT_H_
-#define _OSMO_ABIS_IPA_CLIENT_H_
-
-struct osmo_ipa_unit;
-
-void osmo_abis_ipa_cli_set_oml_addr(struct osmo_chan *c, const char *addr);
-void osmo_abis_ipa_cli_set_oml_port(struct osmo_chan *c, uint16_t port);
-void osmo_abis_ipa_cli_set_rsl_addr(struct osmo_chan *c, const char *addr);
-void osmo_abis_ipa_cli_set_rsl_port(struct osmo_chan *c, uint16_t port);
-void osmo_abis_ipa_cli_set_unit(struct osmo_chan *c, struct osmo_ipa_unit 
*unit);
-void osmo_abis_ipa_cli_set_cb_signalmsg(struct osmo_chan *c, void 
(*signal_msg)(struct msgb *msg, int type));
-
-#endif /* _OSMO_ABIS_IPA_CLIENT_H_ */
diff --git a/include/osmocom/netif/channel/abis_ipa_server.h 
b/include/osmocom/netif/channel/abis_ipa_server.h
deleted file mode 100644
index 6518f99..0000000
--- a/include/osmocom/netif/channel/abis_ipa_server.h
+++ /dev/null
@@ -1,14 +0,0 @@
-#ifndef _ABIS_IPA_SERVER_H_
-#define _ABIS_IPA_SERVER_H_
-
-void osmo_abis_ipa_srv_set_oml_addr(struct osmo_chan *c, const char *addr);
-void osmo_abis_ipa_srv_set_oml_port(struct osmo_chan *c, uint16_t port);
-
-void osmo_abis_ipa_srv_set_rsl_addr(struct osmo_chan *c, const char *addr);
-void osmo_abis_ipa_srv_set_rsl_port(struct osmo_chan *c, uint16_t port);
-
-void osmo_abis_ipa_srv_set_cb_signalmsg(struct osmo_chan *c, void 
(*signal_msg)(struct msgb *msg, int type));
-
-int osmo_abis_ipa_unit_add(struct osmo_chan *c, uint16_t site_id, uint16_t 
bts_id);
-
-#endif
diff --git a/src/Makefile.am b/src/Makefile.am
index 9dc5e46..9951ca4 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -6,15 +6,12 @@
 AM_CFLAGS= -fPIC -Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOABIS_CFLAGS) 
$(COVERAGE_CFLAGS) $(LIBSCTP_CFLAGS)
 AM_LDFLAGS = $(COVERAGE_LDFLAGS)

-SUBDIRS = channel
-
 lib_LTLIBRARIES = libosmonetif.la

-libosmonetif_la_LIBADD = channel/abis/libosmonetif-abis.la $(LIBOSMOCORE_LIBS) 
$(LIBSCTP_LIBS)
+libosmonetif_la_LIBADD = $(LIBOSMOCORE_LIBS) $(LIBSCTP_LIBS)
 libosmonetif_la_LDFLAGS = -version-info $(LIBVERSION) -no-undefined

 libosmonetif_la_SOURCES = amr.c                        \
-                         channel.c             \
                          datagram.c            \
                          ipa.c                 \
                          ipa_unit.c            \
diff --git a/src/channel.c b/src/channel.c
deleted file mode 100644
index 2784f22..0000000
--- a/src/channel.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/* (C) 2011-2012 by Pablo Neira Ayuso <[email protected]>
- * All Rights Reserved.
- *
- * SPDX-License-Identifier: GPL-2.0+
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-#include <osmocom/core/talloc.h>
-#include <osmocom/core/msgb.h>
-#include <osmocom/core/logging.h>
-#include <osmocom/core/linuxlist.h>
-
-#include <osmocom/netif/channel.h>
-
-static LLIST_HEAD(channel_list);
-
-extern struct osmo_chan_type chan_abis_ipa_srv;
-extern struct osmo_chan_type chan_abis_ipa_cli;
-
-static void *osmo_chan_ctx;
-
-void osmo_chan_init(void *ctx)
-{
-       osmo_chan_ctx = ctx;
-       llist_add(&chan_abis_ipa_srv.head, &channel_list);
-       llist_add(&chan_abis_ipa_cli.head, &channel_list);
-       /* add your new channel type here */
-}
-
-struct osmo_chan *osmo_chan_create(int type_id, int subtype_id)
-{
-       struct osmo_chan_type *cur = NULL;
-       int found = 0, found_partial = 0;
-       struct osmo_chan *c;
-
-       if (type_id > OSMO_CHAN_MAX) {
-               LOGP(DLINP, LOGL_ERROR, "unsupported channel type "
-                                       "number `%u'\n", type_id);
-               return NULL;
-       }
-       if (subtype_id > OSMO_SUBCHAN_MAX) {
-               LOGP(DLINP, LOGL_ERROR, "unsupported subchannel type "
-                                       "number `%u'\n", type_id);
-               return NULL;
-       }
-
-       llist_for_each_entry(cur, &channel_list, head) {
-               if (type_id == cur->type && subtype_id == cur->subtype) {
-                       found = 1;
-                       break;
-               } else if (type_id == cur->type) {
-                       found_partial = 1;
-                       break;
-               }
-       }
-
-       if (!found) {
-               LOGP(DLINP, LOGL_ERROR, "unsupported channel type `%s'\n",
-                       cur->name);
-               return NULL;
-       }
-       if (found_partial) {
-               LOGP(DLINP, LOGL_ERROR, "Sorry, channel type `%s' does not "
-                       "support subtype `%u'\n", cur->name, subtype_id);
-               return NULL;
-       }
-
-       c = talloc_zero_size(osmo_chan_ctx,
-                            sizeof(struct osmo_chan) + cur->datasiz);
-       if (c == NULL) {
-               LOGP(DLINP, LOGL_ERROR, "cannot allocate channel data\n");
-               return NULL;
-       }
-
-       c->ops = cur;
-
-       if (c->ops->create(c) < 0) {
-               LOGP(DLINP, LOGL_ERROR, "cannot create channel\n");
-               talloc_free(c);
-               return NULL;
-       }
-       return c;
-}
-
-void osmo_chan_destroy(struct osmo_chan *c)
-{
-       c->ops->destroy(c);
-       talloc_free(c);
-}
-
-int osmo_chan_open(struct osmo_chan *c)
-{
-       return c->ops->open(c);
-}
-
-void osmo_chan_close(struct osmo_chan *c)
-{
-       c->ops->close(c);
-}
-
-int osmo_chan_enqueue(struct osmo_chan *c, struct msgb *msg)
-{
-       return c->ops->enqueue(c, msg);
-}
diff --git a/src/channel/Makefile.am b/src/channel/Makefile.am
deleted file mode 100644
index 1c4b7a9..0000000
--- a/src/channel/Makefile.am
+++ /dev/null
@@ -1 +0,0 @@
-SUBDIRS = abis
diff --git a/src/channel/abis/Makefile.am b/src/channel/abis/Makefile.am
deleted file mode 100644
index 615abff..0000000
--- a/src/channel/abis/Makefile.am
+++ /dev/null
@@ -1,9 +0,0 @@
-AM_CPPFLAGS = -I$(top_srcdir)/include -I$(top_builddir)
-AM_CFLAGS= -fPIC -Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS) 
$(COVERAGE_CFLAGS)
-AM_LDFLAGS = $(COVERAGE_LDFLAGS)
-
-noinst_LTLIBRARIES = libosmonetif-abis.la
-
-libosmonetif_abis_la_SOURCES = ipa_stream_server.c     \
-                              ipa_stream_client.c
-libosmonetif_abis_la_LIBADD = $(LIBOSMOCORE_LIBS) $(LIBOSMOVTY_LIBS)
diff --git a/src/channel/abis/ipa_stream_client.c 
b/src/channel/abis/ipa_stream_client.c
deleted file mode 100644
index c610730..0000000
--- a/src/channel/abis/ipa_stream_client.c
+++ /dev/null
@@ -1,309 +0,0 @@
-/* (C) 2012 by Pablo Neira Ayuso <[email protected]>
- * All Rights Reserved.
- *
- * SPDX-License-Identifier: GPL-2.0+
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdlib.h>
-#include <sys/types.h>
-#include <netinet/in.h>
-#include <netinet/tcp.h>
-#include <sys/socket.h>
-#include <errno.h>
-
-#include <osmocom/core/talloc.h>
-#include <osmocom/core/select.h>
-#include <osmocom/core/msgb.h>
-#include <osmocom/core/logging.h>
-
-#include <osmocom/gsm/tlv.h>
-
-#include <osmocom/netif/channel.h>
-#include <osmocom/netif/stream.h>
-#include <osmocom/netif/ipa.h>
-#include <osmocom/netif/ipa_unit.h>
-
-#define CHAN_SIGN_OML  0
-#define CHAN_SIGN_RSL  1
-
-/* default IPA cli ports. */
-#define IPA_TCP_PORT_OML       3002
-#define IPA_TCP_PORT_RSL       3003
-
-static void *abis_ipa_cli_tall;
-
-struct chan_abis_ipa_cli {
-       struct osmo_ipa_unit *unit;
-
-       struct osmo_stream_cli *oml;
-       struct osmo_stream_cli *rsl;
-
-       void (*signal_msg)(struct msgb *msg, int type);
-};
-
-static int oml_read_cb(struct osmo_stream_cli *conn);
-static int rsl_read_cb(struct osmo_stream_cli *conn);
-
-static int chan_abis_ipa_cli_create(struct osmo_chan *chan)
-{
-       struct chan_abis_ipa_cli *c = (struct chan_abis_ipa_cli *)chan->data;
-
-       c->unit = osmo_ipa_unit_alloc(0);
-       if (c->unit == NULL)
-               goto err;
-
-       c->oml = osmo_stream_cli_create(abis_ipa_cli_tall);
-       if (c->oml == NULL)
-               goto err_oml;
-
-       /* default address and port for OML. */
-       osmo_stream_cli_set_addr(c->oml, "0.0.0.0");
-       osmo_stream_cli_set_port(c->oml, IPA_TCP_PORT_OML);
-       osmo_stream_cli_set_read_cb(c->oml, oml_read_cb);
-       osmo_stream_cli_set_data(c->oml, chan);
-
-       c->rsl = osmo_stream_cli_create(abis_ipa_cli_tall);
-       if (c->rsl == NULL)
-               goto err_rsl;
-
-       /* default address and port for RSL. */
-       osmo_stream_cli_set_addr(c->rsl, "0.0.0.0");
-       osmo_stream_cli_set_port(c->rsl, IPA_TCP_PORT_RSL);
-       osmo_stream_cli_set_read_cb(c->rsl, rsl_read_cb);
-       osmo_stream_cli_set_data(c->rsl, chan);
-
-       return 0;
-err_rsl:
-       osmo_stream_cli_destroy(c->oml);
-err_oml:
-       osmo_ipa_unit_free(c->unit);
-err:
-       return -1;
-}
-
-static void chan_abis_ipa_cli_destroy(struct osmo_chan *chan)
-{
-       struct chan_abis_ipa_cli *c = (struct chan_abis_ipa_cli *)chan->data;
-
-       osmo_ipa_unit_free(c->unit);
-       talloc_free(c->rsl);
-       talloc_free(c->oml);
-}
-
-static int chan_abis_ipa_cli_open(struct osmo_chan *chan)
-{
-       struct chan_abis_ipa_cli *c = (struct chan_abis_ipa_cli *)chan->data;
-       struct osmo_fd *ofd;
-       int ret, on = 1;
-
-       if (osmo_stream_cli_open(c->oml) < 0)
-               goto err;
-
-       ofd = osmo_stream_cli_get_ofd(c->oml);
-       ret = setsockopt(ofd->fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on));
-       if (ret < 0)
-               goto err_oml;
-
-       if (osmo_stream_cli_open(c->rsl) < 0)
-               goto err_oml;
-
-       ofd = osmo_stream_cli_get_ofd(c->rsl);
-       ret = setsockopt(ofd->fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on));
-       if (ret < 0)
-               goto err_rsl;
-
-       return 0;
-
-err_rsl:
-       osmo_stream_cli_close(c->rsl);
-err_oml:
-       osmo_stream_cli_close(c->oml);
-err:
-       return -1;
-}
-
-static void chan_abis_ipa_cli_close(struct osmo_chan *chan)
-{
-       struct chan_abis_ipa_cli *c = (struct chan_abis_ipa_cli *)chan->data;
-
-       osmo_stream_cli_close(c->oml);
-       osmo_stream_cli_close(c->rsl);
-}
-
-static int chan_abis_ipa_cli_enqueue(struct osmo_chan *c, struct msgb *msg)
-{
-       osmo_stream_cli_send(msg->dst, msg);
-       return 0;
-}
-
-void osmo_abis_ipa_cli_set_oml_addr(struct osmo_chan *c, const char *addr)
-{
-       struct chan_abis_ipa_cli *s = (struct chan_abis_ipa_cli *)&c->data;
-
-       osmo_stream_cli_set_addr(s->oml, addr);
-}
-
-void osmo_abis_ipa_cli_set_oml_port(struct osmo_chan *c, uint16_t port)
-{
-       struct chan_abis_ipa_cli *s = (struct chan_abis_ipa_cli *)&c->data;
-
-       osmo_stream_cli_set_port(s->oml, port);
-}
-
-void osmo_abis_ipa_cli_set_rsl_addr(struct osmo_chan *c, const char *addr)
-{
-       struct chan_abis_ipa_cli *s = (struct chan_abis_ipa_cli *)&c->data;
-
-       osmo_stream_cli_set_addr(s->rsl, addr);
-}
-
-void osmo_abis_ipa_cli_set_rsl_port(struct osmo_chan *c, uint16_t port)
-{
-       struct chan_abis_ipa_cli *s = (struct chan_abis_ipa_cli *)&c->data;
-
-       osmo_stream_cli_set_port(s->rsl, port);
-}
-
-void osmo_abis_ipa_cli_set_unit(struct osmo_chan *c, struct osmo_ipa_unit 
*unit)
-{
-       struct chan_abis_ipa_cli *s = (struct chan_abis_ipa_cli *)&c->data;
-
-       osmo_ipa_unit_free(s->unit);
-       s->unit = unit;
-}
-
-void osmo_abis_ipa_cli_set_cb_signalmsg(struct osmo_chan *c,
-       void (*signal_msg)(struct msgb *msg, int type))
-{
-       struct chan_abis_ipa_cli *s = (struct chan_abis_ipa_cli *)&c->data;
-
-       s->signal_msg = signal_msg;
-}
-
-static int
-abis_ipa_cli_rcvmsg(struct osmo_chan *c, struct osmo_stream_cli *conn,
-                   struct msgb *msg, int type)
-{
-       uint8_t msg_type = *(msg->l2h);
-       struct osmo_fd *ofd = osmo_stream_cli_get_ofd(conn);
-       struct chan_abis_ipa_cli *chan = (struct chan_abis_ipa_cli *)&c->data;
-       int ret;
-
-       /* Handle IPA PING, PONG and ID_ACK messages. */
-       if (osmo_ipa_rcvmsg_base(msg, ofd, 0)) /* XXX: 0 indicates client */
-               return 0;
-
-       if (msg_type == IPAC_MSGT_ID_GET) {
-               struct msgb *rmsg;
-               uint8_t *data = msgb_l2(msg);
-               int len = msgb_l2len(msg);
-
-               LOGP(DLINP, LOGL_NOTICE, "received ID get\n");
-
-               rmsg = ipa_cli_id_resp(chan->unit, data + 1, len - 1);
-               osmo_stream_cli_send(conn, rmsg);
-
-               /* send ID_ACK. */
-               rmsg = ipa_cli_id_ack();
-               osmo_stream_cli_send(conn, rmsg);
-               ret = 0;
-       } else {
-               LOGP(DLINP, LOGL_ERROR, "Unknown IPA message type\n");
-               ret = -EINVAL;
-       }
-       return ret;
-}
-
-static int read_cb(struct osmo_stream_cli *conn, int type)
-{
-       int ret;
-       struct msgb *msg;
-       struct osmo_chan *chan = osmo_stream_cli_get_data(conn);
-       struct chan_abis_ipa_cli *s;
-       struct ipa_head *hh;
-
-       LOGP(DLINP, LOGL_DEBUG, "received message from stream\n");
-
-       msg = osmo_ipa_msg_alloc(0);
-       if (msg == NULL) {
-               LOGP(DLINP, LOGL_ERROR, "cannot allocate message\n");
-               return 0;
-       }
-       ret = osmo_stream_cli_recv(conn, msg);
-       if (ret < 0) {
-               LOGP(DLINP, LOGL_ERROR, "cannot receive message\n");
-               msgb_free(msg);
-               /* not the dummy connection, release it. */
-               return 0;
-       } else if (ret == 0) {
-               /* link has vanished, dead socket. */
-               LOGP(DLINP, LOGL_ERROR, "closed connection\n");
-               msgb_free(msg);
-               return 0;
-       }
-
-       if (osmo_ipa_process_msg(msg) < 0) {
-               LOGP(DLINP, LOGL_ERROR, "Bad IPA message\n");
-               msgb_free(msg);
-               return -EIO;
-       }
-
-       hh = (struct ipa_head *) msg->data;
-       if (hh->proto == IPAC_PROTO_IPACCESS) {
-               abis_ipa_cli_rcvmsg(chan, conn, msg, type);
-               msgb_free(msg);
-               return -EIO;
-       }
-
-       chan = osmo_stream_cli_get_data(conn);
-       if (chan == NULL) {
-               LOGP(DLINP, LOGL_ERROR, "no matching signalling link\n");
-               msgb_free(msg);
-               return -EIO;
-       }
-       if (hh->proto != IPAC_PROTO_OML && hh->proto != IPAC_PROTO_RSL) {
-               LOGP(DLINP, LOGL_ERROR, "wrong protocol\n");
-               return -EIO;
-       }
-       msg->dst = chan;
-
-       s = (struct chan_abis_ipa_cli *)chan->data;
-       s->signal_msg(msg, type);
-
-       return 0;
-}
-
-static int oml_read_cb(struct osmo_stream_cli *conn)
-{
-       return read_cb(conn, CHAN_SIGN_OML);
-}
-
-static int rsl_read_cb(struct osmo_stream_cli *conn)
-{
-       return read_cb(conn, CHAN_SIGN_RSL);
-}
-
-struct osmo_chan_type chan_abis_ipa_cli = {
-       .type           = OSMO_CHAN_ABIS_IPA_CLI,
-       .subtype        = OSMO_SUBCHAN_STREAM,
-       .name           = "A-bis IPA client",
-       .datasiz        = sizeof(struct chan_abis_ipa_cli),
-       .create         = chan_abis_ipa_cli_create,
-       .destroy        = chan_abis_ipa_cli_destroy,
-       .open           = chan_abis_ipa_cli_open,
-       .close          = chan_abis_ipa_cli_close,
-       .enqueue        = chan_abis_ipa_cli_enqueue,
-};
diff --git a/src/channel/abis/ipa_stream_server.c 
b/src/channel/abis/ipa_stream_server.c
deleted file mode 100644
index 1cd889c..0000000
--- a/src/channel/abis/ipa_stream_server.c
+++ /dev/null
@@ -1,421 +0,0 @@
-/* (C) 2012 by Pablo Neira Ayuso <[email protected]>
- * All Rights Reserved.
- *
- * SPDX-License-Identifier: GPL-2.0+
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdlib.h>
-#include <sys/types.h>
-#include <netinet/in.h>
-#include <netinet/tcp.h>
-#include <sys/socket.h>
-#include <errno.h>
-
-#include <osmocom/core/talloc.h>
-#include <osmocom/core/select.h>
-#include <osmocom/core/msgb.h>
-#include <osmocom/core/logging.h>
-
-#include <osmocom/gsm/tlv.h>
-
-#include <osmocom/netif/channel.h>
-#include <osmocom/netif/stream.h>
-#include <osmocom/netif/ipa.h>
-#include <osmocom/netif/ipa_unit.h>
-
-#define CHAN_SIGN_OML  0
-#define CHAN_SIGN_RSL  1
-
-/* default IPA srv ports. */
-#define IPA_TCP_PORT_OML       3002
-#define IPA_TCP_PORT_RSL       3003
-
-static void *abis_ipa_srv_tall;
-
-static int oml_accept_cb(struct osmo_stream_srv_link *srv, int fd);
-static int rsl_accept_cb(struct osmo_stream_srv_link *srv, int fd);
-
-struct chan_abis_ipa_srv {
-       struct osmo_chan *chan;
-       struct osmo_stream_srv_link *oml;
-       struct osmo_stream_srv_link *rsl;
-
-       struct llist_head bts_list;
-
-       void (*signal_msg)(struct msgb *msg, int type);
-};
-
-struct chan_abis_ipa_srv_conn {
-       struct chan_abis_ipa_srv *master;
-
-       struct osmo_stream_srv  *oml;
-       struct osmo_stream_srv  *rsl;
-};
-
-static int chan_abis_ipa_srv_create(struct osmo_chan *chan)
-{
-       struct chan_abis_ipa_srv *c = (struct chan_abis_ipa_srv *)chan->data;
-
-       c->oml = osmo_stream_srv_link_create(abis_ipa_srv_tall);
-       if (c->oml == NULL)
-               goto err_oml;
-
-       /* default address and port for OML. */
-       osmo_stream_srv_link_set_addr(c->oml, "0.0.0.0");
-       osmo_stream_srv_link_set_port(c->oml, IPA_TCP_PORT_OML);
-       osmo_stream_srv_link_set_accept_cb(c->oml, oml_accept_cb);
-       osmo_stream_srv_link_set_data(c->oml, c);
-
-       c->rsl = osmo_stream_srv_link_create(abis_ipa_srv_tall);
-       if (c->rsl == NULL)
-               goto err_rsl;
-
-       /* default address and port for RSL. */
-       osmo_stream_srv_link_set_addr(c->rsl, "0.0.0.0");
-       osmo_stream_srv_link_set_port(c->rsl, IPA_TCP_PORT_RSL);
-       osmo_stream_srv_link_set_accept_cb(c->rsl, rsl_accept_cb);
-       osmo_stream_srv_link_set_data(c->rsl, c);
-
-       INIT_LLIST_HEAD(&c->bts_list);
-
-       return 0;
-err_rsl:
-       osmo_stream_srv_link_destroy(c->oml);
-err_oml:
-       return -1;
-}
-
-static void chan_abis_ipa_srv_destroy(struct osmo_chan *chan)
-{
-       struct chan_abis_ipa_srv *c = (struct chan_abis_ipa_srv *)chan->data;
-
-       osmo_stream_srv_link_destroy(c->rsl);
-       osmo_stream_srv_link_destroy(c->oml);
-}
-
-static int chan_abis_ipa_srv_open(struct osmo_chan *chan)
-{
-       struct chan_abis_ipa_srv *c = (struct chan_abis_ipa_srv *)chan->data;
-       struct osmo_fd *ofd;
-       int ret, on = 1;
-
-       if (osmo_stream_srv_link_open(c->oml) < 0)
-               goto err;
-
-       ofd = osmo_stream_srv_link_get_ofd(c->oml);
-       ret = setsockopt(ofd->fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on));
-       if (ret < 0)
-               goto err_oml;
-
-       if (osmo_stream_srv_link_open(c->rsl) < 0)
-               goto err_oml;
-
-       ofd = osmo_stream_srv_link_get_ofd(c->rsl);
-       ret = setsockopt(ofd->fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on));
-       if (ret < 0)
-               goto err_rsl;
-
-       return 0;
-
-err_rsl:
-       osmo_stream_srv_link_close(c->rsl);
-err_oml:
-       osmo_stream_srv_link_close(c->oml);
-err:
-       return -1;
-}
-
-static void chan_abis_ipa_srv_close(struct osmo_chan *chan)
-{
-       struct chan_abis_ipa_srv *c = (struct chan_abis_ipa_srv *)chan->data;
-
-       osmo_stream_srv_link_close(c->oml);
-       osmo_stream_srv_link_close(c->rsl);
-}
-
-static int chan_abis_ipa_srv_enqueue(struct osmo_chan *c, struct msgb *msg)
-{
-       osmo_stream_srv_send(msg->dst, msg);
-       return 0;
-}
-
-void osmo_abis_ipa_srv_set_oml_addr(struct osmo_chan *c, const char *addr)
-{
-       struct chan_abis_ipa_srv *s = (struct chan_abis_ipa_srv *)&c->data;
-
-       osmo_stream_srv_link_set_addr(s->oml, addr);
-}
-
-void osmo_abis_ipa_srv_set_oml_port(struct osmo_chan *c, uint16_t port)
-{
-       struct chan_abis_ipa_srv *s = (struct chan_abis_ipa_srv *)&c->data;
-
-       osmo_stream_srv_link_set_port(s->oml, port);
-}
-
-void osmo_abis_ipa_srv_set_rsl_addr(struct osmo_chan *c, const char *addr)
-{
-       struct chan_abis_ipa_srv *s = (struct chan_abis_ipa_srv *)&c->data;
-
-       osmo_stream_srv_link_set_addr(s->rsl, addr);
-}
-
-void osmo_abis_ipa_srv_set_rsl_port(struct osmo_chan *c, uint16_t port)
-{
-       struct chan_abis_ipa_srv *s = (struct chan_abis_ipa_srv *)&c->data;
-
-       osmo_stream_srv_link_set_port(s->rsl, port);
-}
-
-void osmo_abis_ipa_srv_set_cb_signalmsg(struct osmo_chan *c,
-       void (*signal_msg)(struct msgb *msg, int type))
-{
-       struct chan_abis_ipa_srv *s = (struct chan_abis_ipa_srv *)&c->data;
-
-       s->signal_msg = signal_msg;
-}
-
-int
-osmo_abis_ipa_unit_add(struct osmo_chan *c, uint16_t site_id, uint16_t bts_id)
-{
-       struct osmo_ipa_unit *unit;
-       struct chan_abis_ipa_srv *s = (struct chan_abis_ipa_srv *)&c->data;
-       struct chan_abis_ipa_srv_conn *inst;
-
-       unit = osmo_ipa_unit_alloc(sizeof(struct chan_abis_ipa_srv_conn));
-       if (unit == NULL)
-               return -1;
-
-       osmo_ipa_unit_set_site_id(unit, site_id);
-       osmo_ipa_unit_set_bts_id(unit, bts_id);
-       osmo_ipa_unit_add(&s->bts_list, unit);
-
-       inst = osmo_ipa_unit_get_data(unit);
-       inst->master = s;
-
-       return 0;
-}
-
-static int oml_read_cb(struct osmo_stream_srv *conn);
-
-static int oml_accept_cb(struct osmo_stream_srv_link *srv, int fd)
-{
-       struct osmo_stream_srv *conn;
-       struct osmo_fd *ofd;
-
-       conn = osmo_stream_srv_create(abis_ipa_srv_tall,
-                                     srv, fd, oml_read_cb, NULL, NULL);
-       if (conn == NULL) {
-               LOGP(DLINP, LOGL_ERROR, "error while creating connection\n");
-               return -1;
-       }
-
-       ofd = osmo_stream_srv_get_ofd(conn);
-
-       /* XXX: better use chan_abis_ipa_srv_enqueue. */
-       ipaccess_send_id_req(ofd->fd);
-
-       return 0;
-}
-
-static int rsl_read_cb(struct osmo_stream_srv *conn);
-
-static int rsl_accept_cb(struct osmo_stream_srv_link *srv, int fd)
-{
-       struct osmo_stream_srv *conn;
-       struct osmo_fd *ofd;
-
-       conn = osmo_stream_srv_create(abis_ipa_srv_tall, srv, fd,
-                                     rsl_read_cb, NULL, NULL);
-       if (conn == NULL) {
-               LOGP(DLINP, LOGL_ERROR, "error while creating connection\n");
-               return -1;
-       }
-
-       ofd = osmo_stream_srv_get_ofd(conn);
-
-       /* XXX: better use chan_abis_ipa_srv_enqueue. */
-       ipaccess_send_id_req(ofd->fd);
-
-       return 0;
-}
-
-static void abis_ipa_put(struct osmo_ipa_unit *unit)
-{
-       struct chan_abis_ipa_srv_conn *inst = osmo_ipa_unit_get_data(unit);
-
-       osmo_stream_srv_destroy(inst->oml);
-       osmo_stream_srv_destroy(inst->rsl);
-       inst->oml = NULL;
-       inst->rsl = NULL;
-}
-
-static int
-abis_ipa_srv_rcvmsg(struct osmo_stream_srv *conn, struct msgb *msg, int type)
-{
-       uint8_t msg_type = *(msg->l2h);
-       struct osmo_fd *ofd = osmo_stream_srv_get_ofd(conn);
-       struct osmo_stream_srv_link *link = osmo_stream_srv_get_master(conn);
-       struct chan_abis_ipa_srv *s = osmo_stream_srv_link_get_data(link);
-       struct chan_abis_ipa_srv_conn *inst;
-       int ret;
-
-       /* Handle IPA PING, PONG and ID_ACK messages */
-       if (osmo_ipa_rcvmsg_base(msg, ofd, 1)) /* XXX: 1 indicates server */
-               return 0;
-
-       if (msg_type == IPAC_MSGT_ID_RESP) {
-               struct osmo_ipa_unit *unit;
-               struct ipaccess_unit unit_data;
-
-               if (osmo_ipa_parse_msg_id_resp(msg, &unit_data) < 0) {
-                       LOGP(DLINP, LOGL_ERROR, "bad ID RESP message\n");
-                       return -EIO;
-               }
-
-               unit = osmo_ipa_unit_find(&s->bts_list, unit_data.site_id,
-                                         unit_data.bts_id);
-
-               if (unit == NULL) {
-                       LOGP(DLINP, LOGL_ERROR, "Unable to find BTS "
-                               "configuration for %u/%u/%u, disconnecting\n",
-                               unit_data.site_id, unit_data.bts_id,
-                               unit_data.trx_id);
-                       return 0;
-               }
-               DEBUGP(DLINP, "Identified BTS %u/%u/%u\n",
-                       unit_data.site_id, unit_data.bts_id,
-                       unit_data.trx_id);
-
-               inst = osmo_ipa_unit_get_data(unit);
-
-               if (type == CHAN_SIGN_OML) {
-                       if (inst->oml) {
-                               /* link already exists, kill it. */
-                               osmo_stream_srv_destroy(inst->oml);
-                               return 0;
-                       }
-                       inst->oml = conn;
-               } else if (type == CHAN_SIGN_RSL) {
-                       if (!inst->oml) {
-                               /* no OML link? Restart from scratch. */
-                               abis_ipa_put(unit);
-                               return 0;
-                       }
-                       if (inst->rsl) {
-                               /* RSL link already exists, kill it. */
-                               osmo_stream_srv_destroy(inst->rsl);
-                               return 0;
-                       }
-                       inst->rsl = conn;
-               }
-               osmo_stream_srv_set_data(conn, unit);
-               ret = 0;
-       } else {
-               LOGP(DLINP, LOGL_ERROR, "Unknown IPA message type\n");
-               ret = -EINVAL;
-       }
-       return ret;
-}
-
-static int read_cb(struct osmo_stream_srv *conn, int type)
-{
-       int ret;
-       struct msgb *msg;
-       struct osmo_ipa_unit *unit = osmo_stream_srv_get_data(conn);
-       struct chan_abis_ipa_srv_conn *inst;
-       struct ipa_head *hh;
-
-       LOGP(DLINP, LOGL_DEBUG, "received message from stream\n");
-
-       msg = osmo_ipa_msg_alloc(0);
-       if (msg == NULL) {
-               LOGP(DLINP, LOGL_ERROR, "cannot allocate message\n");
-               return 0;
-       }
-       ret = osmo_stream_srv_recv(conn, msg);
-       if (ret < 0) {
-               LOGP(DLINP, LOGL_ERROR, "cannot receive message\n");
-               msgb_free(msg);
-               if (unit != NULL)
-                       abis_ipa_put(unit);
-               else
-                       osmo_stream_srv_destroy(conn);
-
-               return 0;
-       } else if (ret == 0) {
-               /* link has vanished, dead socket. */
-               LOGP(DLINP, LOGL_ERROR, "closed connection\n");
-               msgb_free(msg);
-               if (unit != NULL)
-                       abis_ipa_put(unit);
-               else
-                       osmo_stream_srv_destroy(conn);
-
-               return 0;
-       }
-       ret = osmo_ipa_process_msg(msg);
-       if (ret < 0) {
-               LOGP(DLINP, LOGL_ERROR, "invalid IPA message\n");
-               msgb_free(msg);
-       }
-
-       hh = (struct ipa_head *) msg->data;
-       if (hh->proto == IPAC_PROTO_IPACCESS) {
-               abis_ipa_srv_rcvmsg(conn, msg, type);
-               msgb_free(msg);
-               return -EIO;
-       }
-
-       if (unit == NULL) {
-               LOGP(DLINP, LOGL_ERROR, "no IPA unit associated to this "
-                                       "connection\n");
-               return -EIO;
-       }
-       inst = osmo_ipa_unit_get_data(unit);
-
-       if (hh->proto != IPAC_PROTO_OML && hh->proto != IPAC_PROTO_RSL) {
-               LOGP(DLINP, LOGL_ERROR, "wrong protocol\n");
-               return -EIO;
-       }
-       msg->dst = conn;
-
-       inst->master->signal_msg(msg, type);
-
-       return 0;
-}
-
-static int oml_read_cb(struct osmo_stream_srv *conn)
-{
-       return read_cb(conn, CHAN_SIGN_OML);
-}
-
-static int rsl_read_cb(struct osmo_stream_srv *conn)
-{
-       return read_cb(conn, CHAN_SIGN_RSL);
-}
-
-struct osmo_chan_type chan_abis_ipa_srv = {
-       .type           = OSMO_CHAN_ABIS_IPA_SRV,
-       .subtype        = OSMO_SUBCHAN_STREAM,
-       .name           = "A-bis IPA server",
-       .datasiz        = sizeof(struct chan_abis_ipa_srv),
-       .create         = chan_abis_ipa_srv_create,
-       .destroy        = chan_abis_ipa_srv_destroy,
-       .open           = chan_abis_ipa_srv_open,
-       .close          = chan_abis_ipa_srv_close,
-       .enqueue        = chan_abis_ipa_srv_enqueue,
-};
diff --git a/src/ipa.c b/src/ipa.c
index c924382..3888457 100644
--- a/src/ipa.c
+++ b/src/ipa.c
@@ -31,7 +31,6 @@

 #include <osmocom/gsm/tlv.h>

-#include <osmocom/netif/channel.h>
 #include <osmocom/netif/ipa.h>
 #include <osmocom/netif/ipa_unit.h>


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Gerrit-Project: libosmo-netif
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I97c378750acb1637ee032fa88a968edf68d8979f
Gerrit-Change-Number: 9783
Gerrit-PatchSet: 1
Gerrit-Owner: Harald Welte <[email protected]>

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