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laforge gerrit-no-reply at lists.osmocom.orglaforge has submitted this change. ( https://gerrit.osmocom.org/c/libosmo-sccp/+/15785 )
Change subject: ss7: Support multiple addresses in SCTP connections
......................................................................
ss7: Support multiple addresses in SCTP connections
After this patch, Several "local-ip" and "remote-ip" lines are accepted
under "listen" and "asp" VTY nodes, allowing to configure an SCTP
connection with multiple connections, hence allowing control of SCTP
multi-homing features.
libosmo-sccp clients such as osmo-bsc and osmo-msc also gain support for
this feature with this commit.
Related: OS#3608
Depends: libosmocore.git Ic8681d9e093216c99c6bca4be81c31ef83688ed1
Depends: libosmo-netif.git I0fe62f518e195db4e34f3b0ad1762bb57ba9d92a
Change-Id: Ibd15de7a4e00dbec78ff2e2dd6a686b0f3af22de
---
M TODO-RELEASE
M include/osmocom/sigtran/osmo_ss7.h
M src/osmo_ss7.c
M src/osmo_ss7_vty.c
M src/sccp_user.c
M tests/vty/ss7_asp_test.vty
6 files changed, 184 insertions(+), 52 deletions(-)
Approvals:
laforge: Looks good to me, approved
Jenkins Builder: Verified
diff --git a/TODO-RELEASE b/TODO-RELEASE
index d0852fc..98b3b88 100644
--- a/TODO-RELEASE
+++ b/TODO-RELEASE
@@ -7,3 +7,4 @@
# If any interfaces have been added since the last public release: c:r:a + 1.
# If any interfaces have been removed or changed since the last public release: c:r:0.
#library what description / commit summary line
+libosmo-sigtran osmo_ss7_asp_peer ABI breakage (host is now an array of strings)
diff --git a/include/osmocom/sigtran/osmo_ss7.h b/include/osmocom/sigtran/osmo_ss7.h
index 9e8f2b3..12aeea4 100644
--- a/include/osmocom/sigtran/osmo_ss7.h
+++ b/include/osmocom/sigtran/osmo_ss7.h
@@ -8,6 +8,7 @@
#include <osmocom/core/fsm.h>
#include <osmocom/core/msgb.h>
#include <osmocom/core/prim.h>
+#include <osmocom/core/socket.h>
extern struct llist_head osmo_ss7_instances;
@@ -348,7 +349,8 @@
***********************************************************************/
struct osmo_ss7_asp_peer {
- char *host;
+ char *host[OSMO_SOCK_MAX_ADDRS];
+ size_t host_cnt;
uint16_t port;
};
@@ -409,6 +411,8 @@
} cfg;
};
+int osmo_ss7_asp_peer_snprintf(char* buf, size_t buf_len, struct osmo_ss7_asp_peer *peer);
+
struct osmo_ss7_asp *
osmo_ss7_asp_find_by_name(struct osmo_ss7_instance *inst, const char *name);
struct osmo_ss7_asp
@@ -480,7 +484,9 @@
int
osmo_ss7_xua_server_set_local_host(struct osmo_xua_server *xs, const char *local_host);
-
+int
+osmo_ss7_xua_server_set_local_hosts(struct osmo_xua_server *xs, const char **local_hosts, size_t local_host_cnt);
+int osmo_ss7_xua_server_add_local_host(struct osmo_xua_server *xs, const char *local_host);
void osmo_ss7_xua_server_destroy(struct osmo_xua_server *xs);
struct osmo_sccp_instance *
diff --git a/src/osmo_ss7.c b/src/osmo_ss7.c
index 9b51c29..a0b931e 100644
--- a/src/osmo_ss7.c
+++ b/src/osmo_ss7.c
@@ -1065,6 +1065,37 @@
* SS7 Application Server Process
***********************************************************************/
+int osmo_ss7_asp_peer_snprintf(char* buf, size_t buf_len, struct osmo_ss7_asp_peer *peer)
+{
+ int len = 0, offset = 0, rem = buf_len;
+ int ret, i;
+ char *after;
+
+ if (buf_len < 3)
+ return -EINVAL;
+
+ if (peer->host_cnt != 1) {
+ ret = snprintf(buf, rem, "(");
+ if (ret < 0)
+ return ret;
+ OSMO_SNPRINTF_RET(ret, rem, offset, len);
+ }
+ for (i = 0; i < peer->host_cnt; i++) {
+ if (peer->host_cnt == 1)
+ after = "";
+ else
+ after = (i == (peer->host_cnt - 1)) ? ")" : "|";
+ ret = snprintf(buf + offset, rem, "%s%s", peer->host[i] ? : "0.0.0.0", after);
+ OSMO_SNPRINTF_RET(ret, rem, offset, len);
+ }
+ ret = snprintf(buf + offset, rem, ":%u", peer->port);
+ if (ret < 0)
+ return ret;
+ OSMO_SNPRINTF_RET(ret, rem, offset, len);
+
+ return len;
+}
+
struct osmo_ss7_asp *
osmo_ss7_asp_find_by_name(struct osmo_ss7_instance *inst, const char *name)
{
@@ -1103,6 +1134,7 @@
char hostbuf_l[64], hostbuf_r[64];
uint16_t local_port, remote_port;
int rc;
+ int i;
OSMO_ASSERT(ss7_initialized);
/* convert local and remote IP to string */
@@ -1129,11 +1161,26 @@
llist_for_each_entry(inst, &osmo_ss7_instances, list) {
struct osmo_ss7_asp *asp;
llist_for_each_entry(asp, &inst->asp_list, list) {
- if (asp->cfg.local.port == local_port &&
- (!asp->cfg.remote.port ||asp->cfg.remote.port == remote_port) &&
- (!asp->cfg.local.host || !strcmp(asp->cfg.local.host, hostbuf_l)) &&
- (!asp->cfg.remote.host || !strcmp(asp->cfg.remote.host, hostbuf_r)))
- return asp;
+ if (asp->cfg.local.port != local_port)
+ continue;
+ if (asp->cfg.remote.port && asp->cfg.remote.port != remote_port)
+ continue;
+
+ for (i = 0; i < asp->cfg.local.host_cnt; i++) {
+ if (!asp->cfg.local.host[i] || !strcmp(asp->cfg.local.host[i], hostbuf_l))
+ break;
+ }
+ if (i == asp->cfg.local.host_cnt)
+ continue; /* didn't match any local.host */
+
+ for (i = 0; i < asp->cfg.remote.host_cnt; i++) {
+ if (!asp->cfg.remote.host[i] || !strcmp(asp->cfg.remote.host[i], hostbuf_r))
+ break;
+ }
+ if (i == asp->cfg.remote.host_cnt)
+ continue; /* didn't match any remote.host */
+
+ return asp;
}
}
@@ -1250,9 +1297,9 @@
return -1;
}
osmo_stream_cli_set_nodelay(asp->client, true);
- osmo_stream_cli_set_addr(asp->client, asp->cfg.remote.host);
+ osmo_stream_cli_set_addrs(asp->client, (const char**)asp->cfg.remote.host, asp->cfg.remote.host_cnt);
osmo_stream_cli_set_port(asp->client, asp->cfg.remote.port);
- osmo_stream_cli_set_local_addr(asp->client, asp->cfg.local.host);
+ osmo_stream_cli_set_local_addrs(asp->client, (const char**)asp->cfg.local.host, asp->cfg.local.host_cnt);
osmo_stream_cli_set_local_port(asp->client, asp->cfg.local.port);
osmo_stream_cli_set_proto(asp->client, asp_proto_to_ip_proto(asp->cfg.proto));
osmo_stream_cli_set_reconnect_timeout(asp->client, 5);
@@ -1699,8 +1746,11 @@
LOGP(DLSS7, LOGL_INFO, "%s: created dynamicASP %s\n",
sock_name, asp->cfg.name);
asp->cfg.is_server = true;
+ asp->cfg.local.host[0] = NULL;
+ asp->cfg.remote.host_cnt = 1;
asp->cfg.remote.port = atoi(portbuf);
- asp->cfg.remote.host = talloc_strdup(asp, hostbuf);
+ asp->cfg.remote.host[0] = talloc_strdup(asp, hostbuf);
+ asp->cfg.remote.host_cnt = 1;
asp->dyn_allocated = true;
asp->server = srv;
osmo_ss7_asp_restart(asp);
@@ -1832,17 +1882,17 @@
oxs->cfg.proto = proto;
oxs->cfg.local.port = local_port;
- oxs->cfg.local.host = talloc_strdup(oxs, local_host);
oxs->server = osmo_stream_srv_link_create(oxs);
osmo_stream_srv_link_set_data(oxs->server, oxs);
osmo_stream_srv_link_set_accept_cb(oxs->server, xua_accept_cb);
osmo_stream_srv_link_set_nodelay(oxs->server, true);
- osmo_stream_srv_link_set_addr(oxs->server, oxs->cfg.local.host);
osmo_stream_srv_link_set_port(oxs->server, oxs->cfg.local.port);
osmo_stream_srv_link_set_proto(oxs->server, asp_proto_to_ip_proto(proto));
+ osmo_ss7_xua_server_set_local_host(oxs, local_host);
+
LOGP(DLSS7, LOGL_INFO, "Created %s server on %s:%" PRIu16 "\n",
get_value_string(osmo_ss7_asp_protocol_vals, proto), local_host, local_port);
@@ -1863,20 +1913,74 @@
int
osmo_ss7_xua_server_bind(struct osmo_xua_server *xs)
{
- LOGP(DLSS7, LOGL_INFO, "(Re)binding %s Server to %s:%u\n",
- get_value_string(osmo_ss7_asp_protocol_vals, xs->cfg.proto),
- xs->cfg.local.host, xs->cfg.local.port);
+ char buf[512];
+ int rc;
+ const char *proto = get_value_string(osmo_ss7_asp_protocol_vals, xs->cfg.proto);
+
+ rc = osmo_ss7_asp_peer_snprintf(buf, sizeof(buf), &xs->cfg.local);
+ if (rc < 0) {
+ LOGP(DLSS7, LOGL_INFO, "Failed parsing %s Server osmo_ss7_asp_peer\n", proto);
+ } else {
+ LOGP(DLSS7, LOGL_INFO, "(Re)binding %s Server to %s\n",
+ proto, buf);
+ }
return osmo_stream_srv_link_open(xs->server);
}
int
osmo_ss7_xua_server_set_local_host(struct osmo_xua_server *xs, const char *local_host)
{
+ osmo_ss7_xua_server_set_local_hosts(xs, &local_host, 1);
+ return 0;
+}
+
+int
+osmo_ss7_xua_server_set_local_hosts(struct osmo_xua_server *xs, const char **local_hosts, size_t local_host_cnt)
+{
+ int i = 0;
OSMO_ASSERT(ss7_initialized);
- osmo_talloc_replace_string(xs, &xs->cfg.local.host, local_host);
- osmo_stream_srv_link_set_addr(xs->server, xs->cfg.local.host);
+ if (local_host_cnt > ARRAY_SIZE(xs->cfg.local.host))
+ return -EINVAL;
+ for (; i < local_host_cnt; i++)
+ osmo_talloc_replace_string(xs, &xs->cfg.local.host[i], local_hosts[i]);
+ for (; i < xs->cfg.local.host_cnt; i++) {
+ talloc_free(xs->cfg.local.host[i]);
+ xs->cfg.local.host[i] = NULL;
+ }
+
+ xs->cfg.local.host_cnt = local_host_cnt;
+
+ osmo_stream_srv_link_set_addrs(xs->server, (const char **)xs->cfg.local.host, xs->cfg.local.host_cnt);
+
+ return 0;
+}
+
+int
+osmo_ss7_xua_server_add_local_host(struct osmo_xua_server *xs, const char *local_host)
+{
+ int i;
+ bool new_is_any = !local_host || !strcmp(local_host, "0.0.0.0");
+ bool iter_is_any;
+
+ /* Makes no sense to have INET_ANY and specific addresses in the set */
+ for (i = 0; i < xs->cfg.local.host_cnt; i++) {
+ iter_is_any = !xs->cfg.local.host[i] ||
+ !strcmp(xs->cfg.local.host[i], "0.0.0.0");
+ if (new_is_any && iter_is_any)
+ return -EINVAL;
+ if (!new_is_any && iter_is_any)
+ return -EINVAL;
+ }
+ /* Makes no sense to have INET_ANY many times */
+ if (new_is_any && xs->cfg.local.host_cnt)
+ return -EINVAL;
+
+ osmo_talloc_replace_string(xs, &xs->cfg.local.host[xs->cfg.local.host_cnt], local_host);
+ xs->cfg.local.host_cnt++;
+
+ osmo_stream_srv_link_set_addrs(xs->server, (const char **)xs->cfg.local.host, xs->cfg.local.host_cnt);
return 0;
}
diff --git a/src/osmo_ss7_vty.c b/src/osmo_ss7_vty.c
index 85cc695..8169aaf 100644
--- a/src/osmo_ss7_vty.c
+++ b/src/osmo_ss7_vty.c
@@ -436,6 +436,8 @@
xs = osmo_ss7_xua_server_create(inst, proto, port, NULL);
if (!xs)
return CMD_SUCCESS;
+ /* Drop first dummy address created automatically by _create(): */
+ osmo_ss7_xua_server_set_local_hosts(xs, NULL, 0);
}
vty->node = L_CS7_XUA_NODE;
@@ -469,7 +471,7 @@
{
struct osmo_xua_server *xs = vty->index;
- osmo_ss7_xua_server_set_local_host(xs, argv[0]);
+ osmo_ss7_xua_server_add_local_host(xs, argv[0]);
return CMD_SUCCESS;
}
@@ -492,21 +494,26 @@
static void write_one_xua(struct vty *vty, struct osmo_xua_server *xs)
{
+ int i;
vty_out(vty, " listen %s %u%s",
get_value_string(osmo_ss7_asp_protocol_vals, xs->cfg.proto),
xs->cfg.local.port, VTY_NEWLINE);
- if (xs->cfg.local.host)
- vty_out(vty, " local-ip %s%s", xs->cfg.local.host, VTY_NEWLINE);
+
+ for (i = 0; i < xs->cfg.local.host_cnt; i++) {
+ if (xs->cfg.local.host)
+ vty_out(vty, " local-ip %s%s", xs->cfg.local.host[i], VTY_NEWLINE);
+ }
if (xs->cfg.accept_dyn_reg)
vty_out(vty, " accept-asp-connections dynamic-permitted%s", VTY_NEWLINE);
}
static void vty_dump_xua_server(struct vty *vty, struct osmo_xua_server *xs)
{
- vty_out(vty, "xUA server for %s on %s:%u%s",
- get_value_string(osmo_ss7_asp_protocol_vals, xs->cfg.proto),
- xs->cfg.local.host ? xs->cfg.local.host : "0.0.0.0",
- xs->cfg.local.port, VTY_NEWLINE);
+ char buf[512];
+ const char *proto = get_value_string(osmo_ss7_asp_protocol_vals, xs->cfg.proto);
+ if (osmo_ss7_asp_peer_snprintf(buf, sizeof(buf), &xs->cfg.local) < 0)
+ snprintf(buf, sizeof(buf), "<error>");
+ vty_out(vty, "xUA server for %s on %s%s", proto, buf, VTY_NEWLINE);
}
DEFUN(show_cs7_xua, show_cs7_xua_cmd,
@@ -604,7 +611,8 @@
"Local IP Address from which to contact of ASP\n")
{
struct osmo_ss7_asp *asp = vty->index;
- osmo_talloc_replace_string(asp, &asp->cfg.local.host, argv[0]);
+ osmo_talloc_replace_string(asp, &asp->cfg.local.host[asp->cfg.local.host_cnt], argv[0]);
+ asp->cfg.local.host_cnt++;
return CMD_SUCCESS;
}
@@ -614,7 +622,8 @@
"Remote IP Address of ASP\n")
{
struct osmo_ss7_asp *asp = vty->index;
- osmo_talloc_replace_string(asp, &asp->cfg.remote.host, argv[0]);
+ osmo_talloc_replace_string(asp, &asp->cfg.remote.host[asp->cfg.remote.host_cnt], argv[0]);
+ asp->cfg.remote.host_cnt++;
return CMD_SUCCESS;
}
@@ -652,6 +661,7 @@
{
struct osmo_ss7_instance *inst;
struct osmo_ss7_asp *asp;
+ char buf[512];
int id = atoi(argv[0]);
inst = osmo_ss7_instance_find(id);
@@ -661,21 +671,23 @@
}
vty_out(vty, " Effect Primary%s", VTY_NEWLINE);
- vty_out(vty, "ASP Name AS Name State Type Rmt Port Remote IP Addr SCTP%s", VTY_NEWLINE);
- vty_out(vty, "------------ ------------ ------------- ---- -------- --------------- ----------%s", VTY_NEWLINE);
+ vty_out(vty, "ASP Name AS Name State Type Remote IP Addr:Rmt Port SCTP%s", VTY_NEWLINE);
+ vty_out(vty, "------------ ------------ ------------- ---- ----------------------- ----------%s", VTY_NEWLINE);
llist_for_each_entry(asp, &inst->asp_list, list) {
- vty_out(vty, "%-12s %-12s %-13s %-4s %-8u %-15s %-10s%s",
+ osmo_ss7_asp_peer_snprintf(buf, sizeof(buf), &asp->cfg.remote);
+ vty_out(vty, "%-12s %-12s %-13s %-4s %-14s %-10s%s",
asp->cfg.name, "?",
asp->fi? osmo_fsm_inst_state_name(asp->fi) : "uninitialized",
get_value_string(osmo_ss7_asp_protocol_vals, asp->cfg.proto),
- asp->cfg.remote.port, asp->cfg.remote.host, "", VTY_NEWLINE);
+ buf, "", VTY_NEWLINE);
}
return CMD_SUCCESS;
}
static void write_one_asp(struct vty *vty, struct osmo_ss7_asp *asp)
{
+ int i;
/* skip any dynamically created ASPs (e.g. auto-created at connect time) */
if (asp->dyn_allocated || asp->simple_client_allocated)
return;
@@ -685,10 +697,14 @@
osmo_ss7_asp_protocol_name(asp->cfg.proto), VTY_NEWLINE);
if (asp->cfg.description)
vty_out(vty, " description %s%s", asp->cfg.description, VTY_NEWLINE);
- if (asp->cfg.local.host)
- vty_out(vty, " local-ip %s%s", asp->cfg.local.host, VTY_NEWLINE);
- if (asp->cfg.remote.host)
- vty_out(vty, " remote-ip %s%s", asp->cfg.remote.host, VTY_NEWLINE);
+ for (i = 0; i < asp->cfg.local.host_cnt; i++) {
+ if (asp->cfg.local.host)
+ vty_out(vty, " local-ip %s%s", asp->cfg.local.host[i], VTY_NEWLINE);
+ }
+ for (i = 0; i < asp->cfg.remote.host_cnt; i++) {
+ if (asp->cfg.remote.host)
+ vty_out(vty, " remote-ip %s%s", asp->cfg.remote.host[i], VTY_NEWLINE);
+ }
if (asp->cfg.qos_class)
vty_out(vty, " qos-class %u%s", asp->cfg.qos_class, VTY_NEWLINE);
}
@@ -1722,6 +1738,9 @@
break;
case L_CS7_XUA_NODE:
oxs = vty->index;
+ /* If no local addr was set, or erased after _create(): */
+ if (!oxs->cfg.local.host_cnt)
+ osmo_ss7_xua_server_set_local_host(oxs, NULL);
if (osmo_ss7_xua_server_bind(oxs) < 0)
vty_out(vty, "%% Unable to bind xUA server to IP(s)%s", VTY_NEWLINE);
vty->node = L_CS7_NODE;
diff --git a/src/sccp_user.c b/src/sccp_user.c
index a1302d9..4e4144e 100644
--- a/src/sccp_user.c
+++ b/src/sccp_user.c
@@ -566,16 +566,18 @@
goto out_rt;
asp_created = true;
- asp->cfg.local.host = NULL;
- asp->cfg.remote.host = NULL;
+ asp->cfg.local.host[0] = NULL;
+ asp->cfg.remote.host[0] = NULL;
if (default_local_ip) {
- asp->cfg.local.host =
+ asp->cfg.local.host[0] =
talloc_strdup(asp, default_local_ip);
}
if (default_remote_ip) {
- asp->cfg.remote.host =
+ asp->cfg.remote.host[0] =
talloc_strdup(asp, default_remote_ip);
}
+ asp->cfg.local.host_cnt = 1;
+ asp->cfg.remote.host_cnt = 1;
asp->simple_client_allocated = true;
} else
talloc_free(asp_name);
diff --git a/tests/vty/ss7_asp_test.vty b/tests/vty/ss7_asp_test.vty
index 1aa954a..b502367 100644
--- a/tests/vty/ss7_asp_test.vty
+++ b/tests/vty/ss7_asp_test.vty
@@ -231,9 +231,9 @@
ss7_asp_vty_test(config-cs7-asp)# local-ip 127.0.0.100
ss7_asp_vty_test(config-cs7-asp)# do show cs7 instance 0 asp
Effect Primary
-ASP Name AS Name State Type Rmt Port Remote IP Addr SCTP
------------- ------------ ------------- ---- -------- --------------- ----------
-my-asp ? uninitialized m3ua 12345 127.0.0.200
+ASP Name AS Name State Type Remote IP Addr:Rmt Port SCTP
+------------ ------------ ------------- ---- ----------------------- ----------
+my-asp ? uninitialized m3ua 127.0.0.200:12345
ss7_asp_vty_test(config-cs7-asp)# exit
ss7_asp_vty_test(config-cs7)# as my-ass m3ua
@@ -294,25 +294,25 @@
ss7_asp_vty_test(config-cs7-as)# do show cs7 instance 0 asp
Effect Primary
-ASP Name AS Name State Type Rmt Port Remote IP Addr SCTP
------------- ------------ ------------- ---- -------- --------------- ----------
-my-asp ? ASP_DOWN m3ua 12345 127.0.0.200
+ASP Name AS Name State Type Remote IP Addr:Rmt Port SCTP
+------------ ------------ ------------- ---- ----------------------- ----------
+my-asp ? ASP_DOWN m3ua 127.0.0.200:12345
ss7_asp_vty_test(config-cs7-as)# exit
ss7_asp_vty_test(config-cs7)# do show cs7 instance 0 asp
Effect Primary
-ASP Name AS Name State Type Rmt Port Remote IP Addr SCTP
------------- ------------ ------------- ---- -------- --------------- ----------
-my-asp ? ASP_DOWN m3ua 12345 127.0.0.200
+ASP Name AS Name State Type Remote IP Addr:Rmt Port SCTP
+------------ ------------ ------------- ---- ----------------------- ----------
+my-asp ? ASP_DOWN m3ua 127.0.0.200:12345
ss7_asp_vty_test(config-cs7)# exit
ss7_asp_vty_test(config)# do show cs7 instance 0 asp
Effect Primary
-ASP Name AS Name State Type Rmt Port Remote IP Addr SCTP
------------- ------------ ------------- ---- -------- --------------- ----------
-my-asp ? ASP_DOWN m3ua 12345 127.0.0.200
+ASP Name AS Name State Type Remote IP Addr:Rmt Port SCTP
+------------ ------------ ------------- ---- ----------------------- ----------
+my-asp ? ASP_DOWN m3ua 127.0.0.200:12345
ss7_asp_vty_test(config)# do show cs7 instance 0 as all
Routing Routing Key Cic Cic
@@ -352,8 +352,8 @@
ss7_asp_vty_test(config-cs7)# do show cs7 instance 0 asp
Effect Primary
-ASP Name AS Name State Type Rmt Port Remote IP Addr SCTP
------------- ------------ ------------- ---- -------- --------------- ----------
+ASP Name AS Name State Type Remote IP Addr:Rmt Port SCTP
+------------ ------------ ------------- ---- ----------------------- ----------
ss7_asp_vty_test(config-cs7)# do show cs7 instance 0 as all
Routing Routing Key Cic Cic
--
To view, visit https://gerrit.osmocom.org/c/libosmo-sccp/+/15785
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Gerrit-Project: libosmo-sccp
Gerrit-Branch: master
Gerrit-Change-Id: Ibd15de7a4e00dbec78ff2e2dd6a686b0f3af22de
Gerrit-Change-Number: 15785
Gerrit-PatchSet: 5
Gerrit-Owner: pespin <pespin at sysmocom.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: daniel <daniel at totalueberwachung.de>
Gerrit-Reviewer: laforge <laforge at osmocom.org>
Gerrit-Reviewer: neels <nhofmeyr at sysmocom.de>
Gerrit-Reviewer: pespin <pespin at sysmocom.de>
Gerrit-MessageType: merged
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