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Pau Espin Pedrol gerrit-no-reply at lists.osmocom.orgPau Espin Pedrol has uploaded this change for review. ( https://gerrit.osmocom.org/14041
Change subject: Request Osmux CID and forward it in Assign Req and Assign Compl
......................................................................
Request Osmux CID and forward it in Assign Req and Assign Compl
Related: OS#2551
Depends: osmo-mgw.git I73b4c62baf39050da81d65553cbea07bc51163de
Change-Id: I5b14e34481e890669c9ee02dba81eba84293cebb
---
M include/osmocom/msc/call_leg.h
M include/osmocom/msc/ran_msg.h
M include/osmocom/msc/rtp_stream.h
M src/libmsc/call_leg.c
M src/libmsc/msc_a.c
M src/libmsc/ran_msg_a.c
M src/libmsc/rtp_stream.c
7 files changed, 105 insertions(+), 8 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-msc refs/changes/41/14041/1
diff --git a/include/osmocom/msc/call_leg.h b/include/osmocom/msc/call_leg.h
index d8380f5..f35816c 100644
--- a/include/osmocom/msc/call_leg.h
+++ b/include/osmocom/msc/call_leg.h
@@ -44,6 +44,8 @@
/* Prevent events from deallocating for certain release code paths, to prevent use-after-free problems. */
bool deallocating;
+
+ bool ran_peer_supports_osmux;
};
enum call_leg_event {
diff --git a/include/osmocom/msc/ran_msg.h b/include/osmocom/msc/ran_msg.h
index 4d0485d..af0822b 100644
--- a/include/osmocom/msc/ran_msg.h
+++ b/include/osmocom/msc/ran_msg.h
@@ -84,6 +84,8 @@
const struct osmo_sockaddr_str *cn_rtp;
const struct gsm0808_channel_type *channel_type;
enum nsap_addr_enc rab_assign_addr_enc;
+ bool osmux_present;
+ uint8_t osmux_cid;
};
struct ran_cipher_mode_command {
@@ -223,6 +225,8 @@
struct osmo_sockaddr_str remote_rtp;
bool codec_present;
enum mgcp_codecs codec;
+ bool osmux_present;
+ uint8_t osmux_cid;
} assignment_complete;
struct {
enum gsm0808_cause bssap_cause;
diff --git a/include/osmocom/msc/rtp_stream.h b/include/osmocom/msc/rtp_stream.h
index 794e806..c53c4f1 100644
--- a/include/osmocom/msc/rtp_stream.h
+++ b/include/osmocom/msc/rtp_stream.h
@@ -44,6 +44,15 @@
struct osmo_mgcpc_ep_ci *ci;
enum mgcp_connection_mode crcx_conn_mode;
+
+ /* configured to use Osmux */
+ bool use_osmux;
+ /* Allocated by our MGW, negative means invalid, not yet known */
+ int local_osmux_cid;
+ /* Allocated by BSC MGW, negative means invalid, not yet known */
+ int remote_osmux_cid;
+ /* Whether remote_osmux_cid has been communicated to MGW */
+ bool remote_osmux_cid_sent_to_mgw;
};
#define RTP_STREAM_FMT "local=" RTP_IP_PORT_FMT ",remote=" RTP_IP_PORT_FMT
@@ -57,6 +66,7 @@
void rtp_stream_set_codec(struct rtp_stream *rtps, enum mgcp_codecs codec);
void rtp_stream_set_remote_addr(struct rtp_stream *rtps, const struct osmo_sockaddr_str *r);
+void rtp_stream_set_remote_osmux_cid(struct rtp_stream *rtps, uint8_t osmux_cid);
int rtp_stream_commit(struct rtp_stream *rtps);
void rtp_stream_release(struct rtp_stream *rtps);
diff --git a/src/libmsc/call_leg.c b/src/libmsc/call_leg.c
index 46405bc..794eda2 100644
--- a/src/libmsc/call_leg.c
+++ b/src/libmsc/call_leg.c
@@ -321,6 +321,10 @@
if (call_leg_ensure_rtp_alloc(cl, dir, call_id, for_trans))
return -EIO;
cl->rtp[dir]->crcx_conn_mode = cl->crcx_conn_mode[dir];
+ if (dir == RTP_TO_RAN && cl->ran_peer_supports_osmux) {
+ cl->rtp[dir]->use_osmux = true;
+ cl->rtp[dir]->remote_osmux_cid = -1; /* wildcard */
+ }
if (codec_if_known)
rtp_stream_set_codec(cl->rtp[dir], *codec_if_known);
if (remote_addr_if_known && osmo_sockaddr_str_is_set(remote_addr_if_known))
diff --git a/src/libmsc/msc_a.c b/src/libmsc/msc_a.c
index 5137e20..7a54375 100644
--- a/src/libmsc/msc_a.c
+++ b/src/libmsc/msc_a.c
@@ -509,6 +509,8 @@
.assignment_command = {
.cn_rtp = &msc_a->cc.call_leg->rtp[RTP_TO_RAN]->local,
.channel_type = &channel_type,
+ .osmux_present = msc_a->cc.call_leg->rtp[RTP_TO_RAN]->use_osmux,
+ .osmux_cid = msc_a->cc.call_leg->rtp[RTP_TO_RAN]->local_osmux_cid,
},
};
if (msc_a_ran_down(msc_a, MSC_ROLE_I, &msg)) {
@@ -602,8 +604,9 @@
return;
}
LOG_MSC_A(msc_a, LOGL_DEBUG,
- "MGW endpoint's RTP address available for the CI %s: " OSMO_SOCKADDR_STR_FMT "\n",
- rtp_direction_name(rtps->dir), OSMO_SOCKADDR_STR_FMT_ARGS(&rtps->local));
+ "MGW endpoint's RTP address available for the CI %s: " OSMO_SOCKADDR_STR_FMT " (osmux=%s:%d)\n",
+ rtp_direction_name(rtps->dir), OSMO_SOCKADDR_STR_FMT_ARGS(&rtps->local),
+ rtps->use_osmux ? "yes" : "no", rtps->local_osmux_cid);
switch (rtps->dir) {
case RTP_TO_RAN:
msc_a_call_leg_ran_local_addr_available(msc_a);
@@ -1239,9 +1242,20 @@
return;
}
+ if (rtps_to_ran->use_osmux != ac->assignment_complete.osmux_present) {
+ LOG_MSC_A_CAT(msc_a, DCC, LOGL_ERROR, "Osmux usage ass request and complete don't match: %d vs %d",
+ rtps_to_ran->use_osmux, ac->assignment_complete.osmux_present);
+ call_leg_release(msc_a->cc.call_leg);
+ return;
+ }
+
/* Update RAN-side endpoint CI: */
rtp_stream_set_codec(rtps_to_ran, ac->assignment_complete.codec);
rtp_stream_set_remote_addr(rtps_to_ran, &ac->assignment_complete.remote_rtp);
+ if (rtps_to_ran->use_osmux)
+ rtp_stream_set_remote_osmux_cid(rtps_to_ran,
+ ac->assignment_complete.osmux_cid);
+
rtp_stream_commit(rtps_to_ran);
/* Setup CN side endpoint CI:
@@ -1574,6 +1588,8 @@
static int msc_a_start_assignment(struct msc_a *msc_a, struct gsm_trans *cc_trans)
{
struct call_leg *cl = msc_a->cc.call_leg;
+ struct msc_i *msc_i = msc_a_msc_i(msc_a);
+ struct gsm_network *net = msc_a_net(msc_a);
OSMO_ASSERT(!msc_a->cc.active_trans);
msc_a->cc.active_trans = cc_trans;
@@ -1594,6 +1610,16 @@
cl->crcx_conn_mode[RTP_TO_RAN] = MGCP_CONN_LOOPBACK;
}
+ if (net->use_osmux != OSMUX_USAGE_OFF) {
+ msc_i = msc_a_msc_i(msc_a);
+ if (msc_i->c.remote_to) {
+ /* TODO: investigate what to do in this case */
+ LOG_MSC_A(msc_a, LOGL_ERROR, "Osmux not yet supported for inter-MSC");
+ } else {
+ cl->ran_peer_supports_osmux = msc_i->ran_conn->ran_peer->remote_supports_osmux;
+ }
+ }
+
/* This will lead to either MSC_EV_CALL_LEG_LOCAL_ADDR_AVAILABLE or MSC_EV_CALL_LEG_TERM.
* If the local address is already known, then immediately trigger. */
if (call_leg_local_ip(cl, RTP_TO_RAN))
diff --git a/src/libmsc/ran_msg_a.c b/src/libmsc/ran_msg_a.c
index 43923df..5194ee8 100644
--- a/src/libmsc/ran_msg_a.c
+++ b/src/libmsc/ran_msg_a.c
@@ -269,6 +269,7 @@
{
struct tlv_p_entry *ie_aoip_transp_addr = TLVP_GET(tp, GSM0808_IE_AOIP_TRASP_ADDR);
struct tlv_p_entry *ie_speech_codec = TLVP_GET(tp, GSM0808_IE_SPEECH_CODEC);
+ struct tlv_p_entry *ie_osmux_cid = TLVP_GET(tp, GSM0808_IE_OSMO_OSMUX_CID);
struct sockaddr_storage rtp_addr;
struct sockaddr_in *rtp_addr_in;
struct gsm0808_speech_codec sc;
@@ -286,6 +287,9 @@
return -EINVAL;
}
+ rc = gsm0808_dec_osmux_cid(&ran_dec_msg.assignment_complete.osmux_cid, ie_osmux_cid->val, ie_osmux_cid->len);
+ ran_dec_msg.assignment_complete.osmux_present = rc < 0 ? false : true;
+
rtp_addr_in = (struct sockaddr_in*)&rtp_addr;
if (rtp_addr.ss_family != AF_INET) {
@@ -909,6 +913,13 @@
return 0;
}
+static void _gsm0808_assignment_extend_osmux(struct msgb *msg, uint8_t cid)
+{
+ OSMO_ASSERT(msg->l3h[1] == msgb_l3len(msg) - 2); /*TL not in len */
+ msgb_tv_put(msg, GSM0808_IE_OSMO_OSMUX_CID, cid);
+ msg->l3h[1] = msgb_l3len(msg) - 2;
+}
+
/* Compose a BSSAP Assignment Command.
* Passing an RTP address is optional.
* The msub is passed merely for error logging. */
@@ -919,6 +930,7 @@
struct gsm0808_speech_codec_list *use_scl = NULL;
struct sockaddr_storage rtp_addr;
struct sockaddr_storage *use_rtp_addr = NULL;
+ struct msgb *msg;
int rc;
if (!ac->channel_type) {
@@ -959,7 +971,10 @@
}
}
- return gsm0808_create_ass(ac->channel_type, NULL, use_rtp_addr, use_scl, NULL);
+ msg = gsm0808_create_ass(ac->channel_type, NULL, use_rtp_addr, use_scl, NULL);
+ if (ac->osmux_present)
+ _gsm0808_assignment_extend_osmux(msg, ac->osmux_cid);
+ return msg;
}
/* For an A5/N number a5_n set dst to the matching GSM0808_ALG_ID_A5_<n>. */
diff --git a/src/libmsc/rtp_stream.c b/src/libmsc/rtp_stream.c
index 6163a98..5c71ffb 100644
--- a/src/libmsc/rtp_stream.c
+++ b/src/libmsc/rtp_stream.c
@@ -82,11 +82,19 @@
OSMO_STRBUF_PRINTF(sb, ":no-codec");
else if (!rtps->codec_sent_to_mgw)
OSMO_STRBUF_PRINTF(sb, ":codec-not-sent");
+ if (rtps->use_osmux) {
+ if (rtps->remote_osmux_cid < 0)
+ OSMO_STRBUF_PRINTF(sb, ":no-remote-osmux-cid");
+ else if (!rtps->remote_osmux_cid_sent_to_mgw)
+ OSMO_STRBUF_PRINTF(sb, ":remote-osmux-cid-not-sent");
+ }
}
if (osmo_sockaddr_str_is_set(&rtps->local))
OSMO_STRBUF_PRINTF(sb, ":local-%s-%u", rtps->local.ip, rtps->local.port);
if (osmo_sockaddr_str_is_set(&rtps->remote))
OSMO_STRBUF_PRINTF(sb, ":remote-%s-%u", rtps->remote.ip, rtps->remote.port);
+ if (rtps->use_osmux)
+ OSMO_STRBUF_PRINTF(sb, ":osmux-%d-%d", rtps->local_osmux_cid, rtps->remote_osmux_cid);
/* Replace any dots in the IP address, dots not allowed as FSM instance name */
for (p = buf; *p; p++)
@@ -117,6 +125,8 @@
.call_id = call_id,
.for_trans = for_trans,
.dir = dir,
+ .local_osmux_cid = -2,
+ .remote_osmux_cid = -2,
};
rtp_stream_update_id(rtps);
@@ -130,6 +140,7 @@
&& osmo_sockaddr_str_is_set(&rtps->local)
&& osmo_sockaddr_str_is_set(&rtps->remote)
&& rtps->remote_sent_to_mgw
+ && (!rtps->use_osmux || rtps->remote_osmux_cid_sent_to_mgw)
&& rtps->codec_known)
rtp_stream_state_chg(rtps, RTP_STREAM_ST_ESTABLISHED);
}
@@ -142,17 +153,27 @@
case RTP_STREAM_EV_CRCX_OK:
crcx_info = osmo_mgcpc_ep_ci_get_rtp_info(rtps->ci);
osmo_sockaddr_str_from_str(&rtps->local, crcx_info->addr, crcx_info->port);
+ if (rtps->use_osmux != crcx_info->x_osmo_osmux_use) {
+ LOG_RTPS(rtps, LOGL_ERROR, "Osmux usage request and response don't match: %d vs %d",
+ rtps->use_osmux, crcx_info->x_osmo_osmux_use);
+ /* TODO: proper failure path */
+ OSMO_ASSERT(rtps->use_osmux != crcx_info->x_osmo_osmux_use);
+ }
+ if (crcx_info->x_osmo_osmux_use)
+ rtps->local_osmux_cid = crcx_info->x_osmo_osmux_cid;
rtp_stream_update_id(rtps);
osmo_fsm_inst_dispatch(fi->proc.parent, CALL_LEG_EV_RTP_STREAM_ADDR_AVAILABLE, rtps);
check_established(rtps);
if ((!rtps->remote_sent_to_mgw || !rtps->codec_sent_to_mgw)
&& osmo_sockaddr_str_is_set(&rtps->remote)
+ && (!rtps->use_osmux || rtps->remote_osmux_cid_sent_to_mgw)
&& rtps->codec_known) {
LOG_RTPS(rtps, LOGL_DEBUG,
- "local ip:port set;%s%s triggering MDCX to send the new settings\n",
+ "local ip:port set;%s%s%s triggering MDCX to send the new settings\n",
(!rtps->remote_sent_to_mgw)? " remote ip:port not yet sent," : "",
- (!rtps->codec_sent_to_mgw)? " codec not yet sent," : "");
+ (!rtps->codec_sent_to_mgw)? " codec not yet sent," : "",
+ (rtps->use_osmux && !rtps->remote_osmux_cid_sent_to_mgw) ? "Osmux CID not yet sent,": "");
rtp_stream_do_mdcx(rtps);
}
return;
@@ -166,6 +187,7 @@
case RTP_STREAM_EV_MDCX_FAIL:
rtps->remote_sent_to_mgw = false;
rtps->codec_sent_to_mgw = false;
+ rtps->remote_osmux_cid_sent_to_mgw = false;
rtp_stream_update_id(rtps);
rtp_stream_state_chg(rtps, RTP_STREAM_ST_DISCARDING);
return;
@@ -274,6 +296,8 @@
verb_info = (struct mgcp_conn_peer){
.call_id = rtps->call_id,
.ptime = 20,
+ .x_osmo_osmux_use = rtps->use_osmux,
+ .x_osmo_osmux_cid = rtps->remote_osmux_cid,
};
if (verb == MGCP_VERB_CRCX)
@@ -347,9 +371,10 @@
return 0;
}
- LOG_RTPS(rtps, LOGL_DEBUG, "Committing: Tx MDCX to update the MGW: updating%s%s\n",
+ LOG_RTPS(rtps, LOGL_DEBUG, "Committing: Tx MDCX to update the MGW: updating%s%s%s\n",
rtps->remote_sent_to_mgw ? "" : " remote-RTP-IP-port",
- rtps->codec_sent_to_mgw ? "" : " codec");
+ rtps->codec_sent_to_mgw ? "" : " codec",
+ (!rtps->use_osmux || rtps->remote_osmux_cid_sent_to_mgw) ? "" : " remote-Osmux-CID");
return rtp_stream_do_mdcx(rtps);
}
@@ -374,6 +399,16 @@
rtp_stream_update_id(rtps);
}
+void rtp_stream_set_remote_osmux_cid(struct rtp_stream *rtps, uint8_t osmux_cid)
+{
+ if (rtps->fi->state == RTP_STREAM_ST_ESTABLISHED)
+ rtp_stream_state_chg(rtps, RTP_STREAM_ST_ESTABLISHING);
+ LOG_RTPS(rtps, LOGL_DEBUG, "setting remote Osmux CID to %u\n", osmux_cid);
+ rtps->remote_osmux_cid = osmux_cid;
+ rtps->remote_osmux_cid_sent_to_mgw = false;
+ rtp_stream_update_id(rtps);
+}
+
bool rtp_stream_is_established(struct rtp_stream *rtps)
{
if (!rtps)
@@ -383,7 +418,8 @@
if (rtps->fi->state != RTP_STREAM_ST_ESTABLISHED)
return false;
if (!rtps->remote_sent_to_mgw
- || !rtps->codec_sent_to_mgw)
+ || !rtps->codec_sent_to_mgw
+ || (rtps->use_osmux && !rtps->remote_osmux_cid_sent_to_mgw))
return false;
return true;
}
--
To view, visit https://gerrit.osmocom.org/14041
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Gerrit-Project: osmo-msc
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I5b14e34481e890669c9ee02dba81eba84293cebb
Gerrit-Change-Number: 14041
Gerrit-PatchSet: 1
Gerrit-Owner: Pau Espin Pedrol <pespin at sysmocom.de>
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