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pespin gerrit-no-reply at lists.osmocom.orgpespin has submitted this change. ( https://gerrit.osmocom.org/c/osmo-hnodeb/+/26357 )
Change subject: Initial implementation of LowerLayer UD Socket
......................................................................
Initial implementation of LowerLayer UD Socket
The LLSK socket is an interface allowing thid-parties to implement and
hook their RLC/MAC/RRC stack to osmo-hnodbe, which takes care of
interconnection with the rest of the RAN and core network (Iuh, RTP,
GTP-U, etc.).
Related: SYS#5516
Change-Id: Icaabb2206d6f141d4fba47dedf71f8ec37e6257d
---
A doc/hnodeb.msc
M include/osmocom/hnodeb/Makefile.am
A include/osmocom/hnodeb/hnb_prim.h
M include/osmocom/hnodeb/hnodeb.h
A include/osmocom/hnodeb/llsk.h
M include/osmocom/hnodeb/ranap.h
M include/osmocom/hnodeb/rua.h
M include/osmocom/hnodeb/vty.h
M src/osmo-hnodeb/Makefile.am
M src/osmo-hnodeb/debug.c
M src/osmo-hnodeb/hnb.c
M src/osmo-hnodeb/hnb_shutdown_fsm.c
M src/osmo-hnodeb/hnbap.c
A src/osmo-hnodeb/llsk.c
A src/osmo-hnodeb/llsk_iuh.c
M src/osmo-hnodeb/main.c
M src/osmo-hnodeb/ranap.c
M src/osmo-hnodeb/rua.c
M src/osmo-hnodeb/vty.c
19 files changed, 1,083 insertions(+), 40 deletions(-)
Approvals:
Jenkins Builder: Verified
laforge: Looks good to me, approved
diff --git a/doc/hnodeb.msc b/doc/hnodeb.msc
new file mode 100644
index 0000000..6ad6e7c
--- /dev/null
+++ b/doc/hnodeb.msc
@@ -0,0 +1,86 @@
+msc {
+ hscale="3";
+ ue [label="Customer"], trx [label="Lower Layer TRX"], hnodeb [label="osmo-hnodeb"], hnbgw [label="HNBGW"], ggsn [label="GGSN"], mgw [label="MGW"];
+
+ |||;
+ --- [ label = "hNodeB starts up" ];
+ hnodeb => hnbgw [label="HNBAP HnbRegisterRequest"];
+ hnodeb <= hnbgw [label="HNBAP HnbRegisterResponse"];
+ |||;
+ ...;
+ |||;
+ |||;
+ --- [ label = "TRX starts up & connects to hNodeB" ];
+ trx => hnodeb [label="CTL-HELLO.req(SAPI=CTL, VERSION)"];
+ trx <= hnodeb [label="CTL-HELLO.cnf(SAPI=CTL, VERSION)"];
+ trx => hnodeb [label="CTL-HELLO.req(SAPI=IUH, VERSION)"];
+ trx <= hnodeb [label="CTL-HELLO.cnf(SAPI=IUH, VERSION)"];
+ trx => hnodeb [label="CTL-HELLO.req(SAPI=GTP, VERSION)"];
+ trx <= hnodeb [label="CTL-HELLO.cnf(SAPI=GTP, VERSION)"];
+ trx => hnodeb [label="CTL-HELLO.req(SAPI=AUDIO, VERSION)"];
+ trx <= hnodeb [label="CTL-HELLO.cnf(SAPI=AUDIO, VERSION)"];
+ trx <= hnodeb [label="IUH-CONFIGURE.ind(PLMN,LAC,SAC,RAC,CI,RNC_ID from HnbRegisterResponse)"];
+ |||;
+ ...;
+ |||;
+ |||;
+ --- [ label = "Subscriber Paging" ];
+ hnodeb <= hnbgw [label="RUA-InitiatingMessage(RANAP Paging)"];
+ trx <= hnodeb [label="IUH-UNITDATA.ind[RANAP Paging]"];
+ |||;
+ ...;
+ |||;
+ |||;
+ --- [ label = "Subscriber Sign Up" ];
+ ue => trx [label="CM Service Req"];
+ trx => hnodeb [label="IUH-CONN_ESTABLISH.req[RANAP CM ServiceReq]"];
+ hnodeb => hnbgw [label="HNBAP UE Register Req(IMSI?)"];
+ hnodeb <= hnbgw [label="HNBAP UE Register Acc(context_id)"];
+ hnodeb => hnbgw [label="RUA-Connect(RANAP-GMM ServiceRequest)"];
+ hnodeb <= hnbgw [label="RUA-DirectTransfer(RANAP GMM ServiceAccept)"];
+ trx <= hnodeb [label="IUH-CONN_ESTABLISH.cnf(context_id])"];
+ trx <= hnodeb [label="IUH-CONN_DATA.ind[context_id, RANAP GMM ServiceAccept]"];
+ --- [ label = "Subscriber set up PS data:" ];
+ hnodeb <= hnbgw [label="RANAP RAB-Assignment Request(TEI, ADDR)"];
+ trx <= hnodeb [label="IUH-CONN_DATA.ind[RANAP RAB-Assignment Request(remote_ip, remote_port, remote_tei)]"];
+ trx => hnodeb [label="GTP-CONN_ESTABLISH.req(remote_ip,remote_port,remote_tei)"];
+ ... [ label = "HnodeB sets up GTP-U connection" ];
+ trx <= hnodeb [label="GTP-CONN_ESTABLISH.cnf(local_ip,local_port,local_tei,remote_tei)"];
+ |||;
+ ...;
+ |||;
+ |||;
+ --- [ label = "PS data transmission over GTP-U:" ];
+ ue => trx [label="..."];
+ trx => hnodeb [label="GTP-CONN_DATA.req[remote_tei,payload]"];
+ hnodeb => ggsn [label="GTP-U(remote_tei, local_addr, remote_addr, payload)"];
+ hnodeb <= ggsn [label="GTP-U(local_tei, remote_addr, local_addr, payload)"];
+ trx <= hnodeb [label="GTP-CONN_DATA.ind[local_tei,payload]"];
+ ue <= trx [label="..."];
+ |||;
+ ...;
+ |||;
+ --- [ label = "MO/MT PS data Release:" ];
+ ue => trx [label="..."];
+ trx => hnodeb [label="IUH-CONN_DATA.req[RANAP IU Release Request]"];
+ hnodeb => hnbgw [label="RANAP IU Release Request"];
+ hnodeb <= hnbgw [label="RANAP IU Release Command"];
+ trx <= hnodeb [label="IUH-CONN_DATA.ind[RANAP IU Release Command]"];
+ ...;
+ trx => hnodeb [label="GTP-CONN_RELEASE.req(remote_tei)"];
+
+ trx => hnodeb [label="IUH-CONN_RELEASE.req[RANAP IU Release Complete]"];
+ hnodeb => hnbgw [label="RUA-Disconnect(RANAP IU Release Complete)"];
+
+ |||;
+ ...;
+ |||;
+ --- [ label = "For voice call (CS): Similar to SAPI_GTP, but using SAPI_AUDIO and osmo-hnodeb sets up RTP stream" ];
+
+
+ |||;
+ ...;
+ |||;
+ --- [ label = "Iuh SCTP link goes down" ];
+ trx <= hnodeb [label="UD socket is closed, osmo-hnodeb cleans up state and attempts reconnect. lowerlayer can re-connect and wait for next CONFIGURE.req"];
+}
diff --git a/include/osmocom/hnodeb/Makefile.am b/include/osmocom/hnodeb/Makefile.am
index 6fa587d..62af5bb 100644
--- a/include/osmocom/hnodeb/Makefile.am
+++ b/include/osmocom/hnodeb/Makefile.am
@@ -1,8 +1,10 @@
noinst_HEADERS = \
hnb_shutdown_fsm.h \
+ hnb_prim.h \
hnbap.h \
hnodeb.h \
iuh.h \
+ llsk.h \
ranap.h \
rua.h \
vty.h \
diff --git a/include/osmocom/hnodeb/hnb_prim.h b/include/osmocom/hnodeb/hnb_prim.h
new file mode 100644
index 0000000..6d597c4
--- /dev/null
+++ b/include/osmocom/hnodeb/hnb_prim.h
@@ -0,0 +1,165 @@
+/* (C) 2021 by sysmocom - s.f.m.c. GmbH <info at sysmocom.de>
+ * Author: Pau Espin Pedrol <pespin at sysmocom.de>
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/lienses/>.
+ *
+ */
+/* This header includes information relative to protocol and message structure
+ * spoken between osmo-hnodeb, facing the HNBGW and other RAN/CN nodes, and a
+ * Lower Layer program (aka the TRX), implementing the RLC/MAC/RRC towards the
+ * UE in the Uu interface. This protocol is usually referenced as HNBLLIF. The
+ * protocol is primitive based and follows the concepts described in ITU-T
+ * X.210, with osmo-hnodeb taking the "service provider" role and the TRX taking
+ * the "user" role in this case.
+ */
+
+#pragma once
+
+#include <inttypes.h>
+#include <unistd.h>
+#include <stdint.h>
+
+#include <osmocom/core/prim.h>
+
+#define HNB_PRIM_API_VERSION 0
+#define HNB_PRIM_UD_SOCK_DEFAULT "/tmp/hnb_prim_sock"
+
+#define HNB_PRIM_SAPI_IUH 1
+#define HNB_PRIM_SAPI_GTP 2
+#define HNB_PRIM_SAPI_AUDIO 3
+
+/*! \brief HNB_IUH primitives */
+enum hnb_iuh_prim_type {
+ HNB_IUH_PRIM_CONFIGURE,
+ HNB_IUH_PRIM_CONN_ESTABLISH,
+ HNB_IUH_PRIM_CONN_RELEASE,
+ HNB_IUH_PRIM_CONN_DATA,
+ HNB_IUH_PRIM_UNITDATA,
+ _HNB_IUH_PRIM_MAX
+};
+
+/* HNB_IUH_PRIM_CONFIGURE.ind, DL */
+struct hnb_iuh_configure_ind_param {
+ uint16_t mcc;
+ uint16_t mnc;
+ uint16_t cell_identity;
+ uint16_t lac;
+ uint8_t rac;
+ uint8_t reserved;
+ uint16_t sac;
+ uint16_t rnc_id;
+} __attribute__ ((packed));
+
+/* HNB_HNB_IUH_PRIM_CONN_ESTABLISH.ind, DL */
+struct hnb_iuh_conn_establish_ind_param {
+ uint32_t context_id;
+ uint8_t domain;
+ uint8_t cause;
+ uint8_t csg_membership_status;
+ uint8_t spare1;
+ uint32_t data_len; /* RANAP message length in bytes */
+ uint8_t data[0]; /* RANAP message */
+} __attribute__ ((packed));
+
+/* HNB_HNB_IUH_PRIM_CONN_ESTABLISH.req, UL */
+struct hnb_iuh_conn_establish_req_param {
+ uint32_t context_id;
+ uint8_t domain;
+ uint8_t est_cause;
+ /* TODO: Check if we can copy it as an encoded buffer RRC <-> RUA
+ * RRC: 3GPP TS 25.331 10.3.1.6 Intra Domain NAS Node Selector
+ * RUA: 3GPP TS 25.468 9.2.4 */
+ uint16_t reserved; //uint16_t nas_node_selector_bitlen;
+ //uint8_t nas_node_selector[128]; /* TODO: check whether we can decrease this buffer size */
+ uint32_t data_len; /* RANAP message length in bytes */
+ uint8_t data[0]; /* RANAP message */
+} __attribute__ ((packed));
+
+/* HNB_HNB_IUH_PRIM_CONN_ESTABLISH.cnf, DL */
+struct hnb_iuh_conn_establish_cnf_param {
+ uint32_t context_id;
+ uint8_t domain;
+ uint8_t cause; /* 0 = success, !0 = failure */
+} __attribute__ ((packed));
+
+/* HNB_IUH_PRIM_CONN_RELEASE.req, DL */
+struct hnb_iuh_conn_release_req_param {
+ uint32_t context_id;
+ uint8_t domain;
+ uint8_t spare1;
+ uint8_t cause_type; /* 3GPP TS 25.468 9.2.7 Cause */
+ uint8_t cause; /* 3GPP TS 25.468 9.2.7 Cause */
+ uint32_t data_len; /* RANAP message length in bytes */
+ uint8_t data[0]; /* RANAP message */
+} __attribute__ ((packed));
+
+/* HNB_IUH_PRIM_CONN_RELEASE.ind, UL */
+struct hnb_iuh_conn_release_ind_param {
+ uint32_t context_id;
+ uint8_t domain;
+ uint8_t spare1;
+ uint8_t cause_type;
+ uint8_t cause;
+ uint32_t data_len; /* RANAP message length in bytes */
+ uint8_t data[0]; /* RANAP message */
+} __attribute__ ((packed));
+
+/* HNB_IUH_PRIM_CONN_DATA.req, DL */
+struct hnb_iuh_conn_data_req_param {
+ uint32_t context_id;
+ uint8_t domain;
+ uint8_t spare1;
+ uint16_t spare2;
+ uint32_t data_len; /* RANAP message length in bytes */
+ uint8_t data[0]; /* RANAP message */
+} __attribute__ ((packed));
+
+/* HNB_IUH_PRIM_CONN_DATA.ind, UL */
+struct hnb_iuh_conn_data_ind_param {
+ uint32_t context_id;
+ uint8_t domain;
+ uint8_t spare1;
+ uint16_t spare2;
+ uint32_t data_len; /* RANAP message length in bytes */
+ uint8_t data[0]; /* RANAP message */
+} __attribute__ ((packed));
+
+/* HNB_IUH_PRIM_UNITDATA.req, UL */
+struct hnb_iuh_unitdata_req_param {
+ uint32_t data_len; /* RANAP message length in bytes */
+ uint8_t data[0]; /* RANAP message */
+} __attribute__ ((packed));
+
+/* HNB_IUH_PRIM_UNITDATA.ind, DL */
+struct hnb_iuh_unitdata_ind_param {
+ uint32_t data_len; /* RANAP message length in bytes */
+ uint8_t data[0]; /* RANAP message */
+} __attribute__ ((packed));
+
+struct hnb_iuh_prim {
+ struct osmo_prim_hdr hdr;
+ union {
+ struct hnb_iuh_configure_ind_param configure_ind;
+ struct hnb_iuh_conn_establish_req_param conn_establish_req;
+ struct hnb_iuh_conn_establish_ind_param conn_establish_ind;
+ struct hnb_iuh_conn_establish_cnf_param conn_establish_cnf;
+ struct hnb_iuh_conn_release_req_param conn_release_req;
+ struct hnb_iuh_conn_release_ind_param conn_release_ind;
+ struct hnb_iuh_conn_data_req_param conn_data_req;
+ struct hnb_iuh_conn_data_ind_param conn_data_ind;
+ struct hnb_iuh_unitdata_req_param unitdata_req;
+ struct hnb_iuh_unitdata_ind_param unitdata_ind;
+ } u;
+} __attribute__ ((packed));
diff --git a/include/osmocom/hnodeb/hnodeb.h b/include/osmocom/hnodeb/hnodeb.h
index a629b4e..fd7d1e9 100644
--- a/include/osmocom/hnodeb/hnodeb.h
+++ b/include/osmocom/hnodeb/hnodeb.h
@@ -19,29 +19,51 @@
*/
#pragma once
+#include <stdint.h>
+#include <stdbool.h>
+
#include <asn1c/asn1helpers.h>
#include <osmocom/core/select.h>
+#include <osmocom/core/timer.h>
#include <osmocom/core/linuxlist.h>
#include <osmocom/core/write_queue.h>
#include <osmocom/core/logging.h>
#include <osmocom/gsm/gsm23003.h>
+#include <osmocom/gsm/protocol/gsm_23_003.h>
#include <osmocom/netif/stream.h>
+#include <osmocom/hnodeb/llsk.h>
+
enum {
DMAIN,
DHNBAP,
DRUA,
DRANAP,
DSCTP,
+ DLLSK,
};
extern const struct log_info hnb_log_info;
-struct hnb_chan {
- int is_ps;
+struct hnb;
+
+struct hnb_ue {
+ struct llist_head list; /* Item in struct hnb->ue_list */
+ struct hnb *hnb; /* backpointer */
uint32_t conn_id;
- char *imsi;
+ char imsi[OSMO_IMSI_BUF_SIZE];
+ struct hnb_ue_cs_ctx {
+ bool active; /* Is this chan in use? */
+ bool conn_est_cnf_pending; /* Did we send CONN_ESTABLISH_CNF to lower layers? */
+ } conn_cs;
+ struct hnb_ue_ps_ctx {
+ bool active; /* Is this chan in use? */
+ bool conn_est_cnf_pending; /* Did we send CONN_ESTABLISH_CNF to lower layers? */
+ } conn_ps;
};
+struct hnb_ue *hnb_ue_alloc(struct hnb *hnb, uint32_t conn_id);
+void hnb_ue_free(struct hnb_ue *ue);
+void hnb_ue_reset_chan(struct hnb_ue *ue, bool is_ps);
struct hnb {
char *identity; /* HNB-Identity */
@@ -58,20 +80,27 @@
struct osmo_stream_cli *client;
} iuh;
+ /* Lower Layer UD socket */
+ struct osmo_prim_srv_link *llsk_link;
+ struct osmo_prim_srv *llsk;
+ uint8_t llsk_valid_sapi_mask;
+ struct osmo_timer_list llsk_defer_configure_ind_timer;
+
uint16_t rnc_id;
+ bool registered; /* Set to true once HnbRegisterAccept was received from Iuh. rnc_id is valid iif registered==true */
uint32_t ctx_id;
struct osmo_fsm_inst *shutdown_fi; /* FSM instance to manage shutdown procedure during process exit */
bool shutdown_fi_exit_proc; /* exit process when shutdown_fsm is finished? */
- struct {
- struct hnb_chan *chan;
- } cs;
+ struct llist_head ue_list; /* list of struct hnb_ue */
};
struct hnb *hnb_alloc(void *tall_ctx);
void hnb_free(struct hnb *hnb);
+struct hnb_ue *hnb_find_ue_by_id(const struct hnb *hnb, uint32_t conn_id);
+struct hnb_ue *hnb_find_ue_by_imsi(const struct hnb *hnb, char *imsi);
extern void *tall_hnb_ctx;
extern struct hnb *g_hnb;
diff --git a/include/osmocom/hnodeb/llsk.h b/include/osmocom/hnodeb/llsk.h
new file mode 100644
index 0000000..ab39439
--- /dev/null
+++ b/include/osmocom/hnodeb/llsk.h
@@ -0,0 +1,44 @@
+/* (C) 2021 by sysmocom - s.f.m.c. GmbH <info at sysmocom.de>
+ * Author: Pau Espin Pedrol <pespin at sysmocom.de>
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/lienses/>.
+ *
+ */
+#pragma once
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include <osmocom/core/utils.h>
+#include <osmocom/netif/prim.h>
+#include <osmocom/hnodeb/hnb_prim.h>
+
+struct hnb;
+
+int hnb_llsk_alloc(struct hnb *hnb);
+bool hnb_llsk_connected(const struct hnb *hnb);
+bool hnb_llsk_can_be_configured(struct hnb *hnb);
+
+
+extern const struct value_string hnb_iuh_prim_type_names[];
+int llsk_rx_iuh(struct hnb *hnb, struct osmo_prim_hdr *oph);
+int llsk_iuh_tx_configure_ind(struct hnb *hnb);
+struct hnb_iuh_prim *hnb_iuh_makeprim_conn_establish_cnf(uint32_t context_id, uint8_t domain,
+ uint8_t cause);
+struct hnb_iuh_prim *hnb_iuh_makeprim_conn_data_ind(uint32_t context_id,
+ uint8_t domain,
+ const uint8_t *data,
+ uint32_t data_len);
+struct hnb_iuh_prim *hnb_iuh_makeprim_unitdata_ind(const uint8_t *data, uint32_t data_len);
diff --git a/include/osmocom/hnodeb/ranap.h b/include/osmocom/hnodeb/ranap.h
index 474de70..6e9c9b7 100644
--- a/include/osmocom/hnodeb/ranap.h
+++ b/include/osmocom/hnodeb/ranap.h
@@ -19,4 +19,6 @@
*/
#pragma once
+#include <osmocom/core/msgb.h>
+struct msgb *hnb_ranap_msgb_alloc(void);
diff --git a/include/osmocom/hnodeb/rua.h b/include/osmocom/hnodeb/rua.h
index ea7e81c..e780207 100644
--- a/include/osmocom/hnodeb/rua.h
+++ b/include/osmocom/hnodeb/rua.h
@@ -22,6 +22,9 @@
#include <asn1c/ANY.h>
struct hnb;
+struct hnb_ue;
struct msgb;
+struct msgb *hnb_rua_msgb_alloc(void);
+
int hnb_rua_rx(struct hnb *hnb, struct msgb *msg);
diff --git a/include/osmocom/hnodeb/vty.h b/include/osmocom/hnodeb/vty.h
index e30019e..627436d 100644
--- a/include/osmocom/hnodeb/vty.h
+++ b/include/osmocom/hnodeb/vty.h
@@ -27,6 +27,7 @@
enum hnb_vty_nodes {
HNODEB_NODE = _LAST_OSMOVTY_NODE,
IUH_NODE,
+ LLSK_NODE,
};
void hnb_vty_init(void);
diff --git a/src/osmo-hnodeb/Makefile.am b/src/osmo-hnodeb/Makefile.am
index 82ccd37..b6d2d49 100644
--- a/src/osmo-hnodeb/Makefile.am
+++ b/src/osmo-hnodeb/Makefile.am
@@ -35,6 +35,8 @@
hnb.c \
hnb_shutdown_fsm.c \
iuh.c \
+ llsk.c \
+ llsk_iuh.c \
ranap.c \
rua.c \
vty.c \
diff --git a/src/osmo-hnodeb/debug.c b/src/osmo-hnodeb/debug.c
index 45ccc0c..f34851b 100644
--- a/src/osmo-hnodeb/debug.c
+++ b/src/osmo-hnodeb/debug.c
@@ -24,7 +24,7 @@
static const struct log_info_cat log_cat[] = {
[DMAIN] = {
.name = "DMAIN", .loglevel = LOGL_NOTICE, .enabled = 1,
- .color = "",
+ .color = "\033[1;37m",
.description = "Main program",
},
[DHNBAP] = {
@@ -47,6 +47,11 @@
.color = "\033[1;36m",
.description = "SCTP connection on the Iuh link",
},
+ [DLLSK] = {
+ .name = "DLLSK", .loglevel = LOGL_NOTICE, .enabled = 1,
+ .color = "\033[1;31m",
+ .description = "Lower Layer Unix Domain Socket",
+ },
};
const struct log_info hnb_log_info = {
diff --git a/src/osmo-hnodeb/hnb.c b/src/osmo-hnodeb/hnb.c
index b7be4ea..1ac2efc 100644
--- a/src/osmo-hnodeb/hnb.c
+++ b/src/osmo-hnodeb/hnb.c
@@ -23,10 +23,12 @@
#include <osmocom/core/socket.h>
#include <osmocom/core/talloc.h>
#include <osmocom/netif/stream.h>
+#include <osmocom/netif/prim.h>
#include <osmocom/hnodeb/hnodeb.h>
#include <osmocom/hnodeb/iuh.h>
#include <osmocom/hnodeb/hnb_shutdown_fsm.h>
+#include <osmocom/hnodeb/hnb_prim.h>
struct hnb *hnb_alloc(void *tall_ctx)
@@ -37,15 +39,18 @@
if (!hnb)
return NULL;
+ INIT_LLIST_HEAD(&hnb->ue_list);
+
hnb->identity = talloc_strdup(hnb, "OsmoHNodeB");
hnb->plmn = (struct osmo_plmn_id){
.mcc = 1,
.mnc = 1,
};
-
hnb->shutdown_fi = osmo_fsm_inst_alloc(&hnb_shutdown_fsm, hnb, hnb,
LOGL_INFO, NULL);
+ hnb_llsk_alloc(hnb);
+
hnb_iuh_alloc(hnb);
return hnb;
@@ -53,10 +58,78 @@
void hnb_free(struct hnb *hnb)
{
+ struct hnb_ue *ue, *ue_tmp;
+
+ llist_for_each_entry_safe(ue, ue_tmp, &hnb->ue_list, list)
+ hnb_ue_free(ue);
+
if (hnb->shutdown_fi) {
osmo_fsm_inst_free(hnb->shutdown_fi);
hnb->shutdown_fi = NULL;
}
hnb_iuh_free(hnb);
+
+ osmo_timer_del(&hnb->llsk_defer_configure_ind_timer);
+ osmo_prim_srv_link_free(hnb->llsk_link);
+ hnb->llsk_link = NULL;
+
talloc_free(hnb);
}
+
+struct hnb_ue *hnb_ue_alloc(struct hnb *hnb, uint32_t conn_id)
+{
+ struct hnb_ue *ue;
+
+ ue = talloc_zero(hnb, struct hnb_ue);
+ if (!ue)
+ return NULL;
+
+ ue->hnb = hnb;
+ ue->conn_id = conn_id;
+
+ llist_add(&ue->list, &hnb->ue_list);
+
+ return ue;
+}
+
+void hnb_ue_free(struct hnb_ue *ue)
+{
+ llist_del(&ue->list);
+ talloc_free(ue);
+}
+
+void hnb_ue_reset_chan(struct hnb_ue *ue, bool is_ps)
+{
+ if (is_ps)
+ ue->conn_ps = (struct hnb_ue_ps_ctx){0};
+ else
+ ue->conn_cs = (struct hnb_ue_cs_ctx){0};
+}
+
+struct hnb_ue *hnb_find_ue_by_id(const struct hnb *hnb, uint32_t conn_id)
+{
+ struct hnb_ue *ue;
+
+ llist_for_each_entry(ue, &hnb->ue_list, list) {
+ if (ue->conn_id != conn_id)
+ continue;
+ return ue;
+ }
+ return NULL;
+}
+struct hnb_ue *hnb_find_ue_by_imsi(const struct hnb *hnb, char *imsi)
+{
+ struct hnb_ue *ue;
+
+ if (!imsi || imsi[0] == '\0')
+ return NULL;
+
+ llist_for_each_entry(ue, &hnb->ue_list, list) {
+ if (ue->imsi[0] == '\0')
+ continue;
+ if (strncmp(&ue->imsi[0], imsi, ARRAY_SIZE(ue->imsi)) != 0)
+ continue;
+ return ue;
+ }
+ return NULL;
+}
diff --git a/src/osmo-hnodeb/hnb_shutdown_fsm.c b/src/osmo-hnodeb/hnb_shutdown_fsm.c
index 55de64c..5583834 100644
--- a/src/osmo-hnodeb/hnb_shutdown_fsm.c
+++ b/src/osmo-hnodeb/hnb_shutdown_fsm.c
@@ -34,6 +34,11 @@
static void st_none_on_enter(struct osmo_fsm_inst *fi, uint32_t prev_state)
{
struct hnb *hnb = (struct hnb *)fi->priv;
+
+ /* Reset state: */
+ hnb->registered = false;
+ hnb->rnc_id = 0;
+
hnb_iuh_connect(hnb); /* Start reconnect once we are done with shutdown and we didn't exit process */
}
diff --git a/src/osmo-hnodeb/hnbap.c b/src/osmo-hnodeb/hnbap.c
index 3287eeb..ccd521e 100644
--- a/src/osmo-hnodeb/hnbap.c
+++ b/src/osmo-hnodeb/hnbap.c
@@ -33,7 +33,9 @@
#include <osmocom/hnodeb/hnbap.h>
#include <osmocom/hnodeb/hnodeb.h>
#include <osmocom/hnodeb/iuh.h>
+#include <osmocom/hnodeb/hnb_prim.h>
#include <osmocom/hnodeb/hnb_shutdown_fsm.h>
+#include <osmocom/hnodeb/llsk.h>
static int hnb_rx_hnb_register_acc(struct hnb *hnb, ANY_t *in)
{
@@ -42,13 +44,19 @@
rc = hnbap_decode_hnbregisteraccepties(&accept, in);
if (rc < 0) {
+ hnb_shutdown(hnb, "Failed decoding HnbRegisterAccept IEs", false);
+ return rc;
}
hnb->rnc_id = accept.rnc_id;
+ hnb->registered = true;
LOGP(DHNBAP, LOGL_INFO, "Rx HNB Register accept with RNC ID %u\n", hnb->rnc_id);
hnbap_free_hnbregisteraccepties(&accept);
- return 0;
+
+ if (hnb_llsk_can_be_configured(hnb))
+ llsk_iuh_tx_configure_ind(hnb);
+ return rc;
}
static int hnb_rx_hnb_register_rej(struct hnb *hnb, ANY_t *in)
@@ -56,6 +64,8 @@
int rc;
HNBAP_HNBRegisterRejectIEs_t reject;
+ hnb->registered = false;
+
rc = hnbap_decode_hnbregisterrejecties(&reject, in);
if (rc < 0) {
LOGP(DHNBAP, LOGL_NOTICE, "Rx HNB Register Reject: parse failure\n");
diff --git a/src/osmo-hnodeb/llsk.c b/src/osmo-hnodeb/llsk.c
new file mode 100644
index 0000000..5f0f9dc
--- /dev/null
+++ b/src/osmo-hnodeb/llsk.c
@@ -0,0 +1,134 @@
+/* (C) 2021 by sysmocom - s.f.m.c. GmbH <info at sysmocom.de>
+ * Author: Pau Espin Pedrol <pespin at sysmocom.de>
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/lienses/>.
+ *
+ */
+
+#include <errno.h>
+
+#include <osmocom/core/prim.h>
+#include <osmocom/core/logging.h>
+
+#include <osmocom/hnodeb/hnodeb.h>
+#include <osmocom/hnodeb/llsk.h>
+#include <osmocom/hnodeb/hnb_prim.h>
+#include <osmocom/hnodeb/hnb_shutdown_fsm.h>
+
+static int llsk_opened_cb(struct osmo_prim_srv *srv)
+{
+ struct hnb *hnb = (struct hnb *)osmo_prim_srv_get_priv(srv);
+
+ if (hnb->llsk) {
+ LOGP(DLLSK, LOGL_ERROR, "New connection opened while one is already active, dropping it\n");
+ osmo_prim_srv_close(srv);
+ return 0;
+ }
+ LOGP(DLLSK, LOGL_NOTICE, "LLSK conn is UP\n");
+ hnb->llsk = srv;
+ return 0;
+}
+
+static int llsk_closed_cb(struct osmo_prim_srv *srv)
+{
+ struct hnb *hnb = (struct hnb *)osmo_prim_srv_get_priv(srv);
+
+ if (!hnb->llsk) {
+ LOGP(DLLSK, LOGL_ERROR, "closed_cb received but we have no active llsk conn!\n");
+ return 0;
+ }
+ /* If a later conn different than active one is dropped (because we closed it): */
+ if (hnb->llsk != srv)
+ return 0;
+ LOGP(DLLSK, LOGL_NOTICE, "LLSK conn is DOWN\n");
+
+ hnb->llsk = NULL;
+ hnb->llsk_valid_sapi_mask = 0x0;
+ osmo_timer_del(&hnb->llsk_defer_configure_ind_timer);
+ hnb_shutdown(hnb, "LLSK conn dropped", false);
+ return 0;
+}
+
+bool hnb_llsk_connected(const struct hnb *hnb)
+{
+ return !!hnb->llsk;
+}
+
+bool hnb_llsk_can_be_configured(struct hnb *hnb)
+{
+ if (!hnb->registered)
+ return false;
+ if (!hnb->llsk)
+ return false;
+
+ if (hnb->llsk_valid_sapi_mask & (1 << HNB_PRIM_SAPI_IUH))
+ return true;
+ return false;
+}
+
+static void llsk_defer_configure_ind_timer_cb(void *data)
+{
+ struct hnb *hnb = (struct hnb *)data;
+ llsk_iuh_tx_configure_ind(hnb);
+}
+
+static int llsk_rx_sapi_version_cb(struct osmo_prim_srv *prim_srv, uint32_t sapi, uint16_t rem_version)
+{
+ struct hnb *hnb = (struct hnb *)osmo_prim_srv_get_priv(prim_srv);
+ if (sapi > sizeof(hnb->llsk_valid_sapi_mask)*8 - 1)
+ return -1;
+ hnb->llsk_valid_sapi_mask |= (1 << sapi);
+
+ /* Defer CONFIGURE.req after we have confirmed the versions */
+ if (hnb_llsk_can_be_configured(hnb))
+ osmo_timer_schedule(&hnb->llsk_defer_configure_ind_timer, 0, 0);
+
+ return rem_version;
+}
+
+static int llsk_rx_cb(struct osmo_prim_srv *srv, struct osmo_prim_hdr *oph)
+{
+ struct hnb *hnb = (struct hnb *)osmo_prim_srv_get_priv(srv);
+ LOGP(DLLSK, LOGL_DEBUG, "llsk_rx_cb() SAP=%u (%u bytes): %s\n", oph->sap,
+ msgb_length(oph->msg), osmo_hexdump(msgb_data(oph->msg), msgb_length(oph->msg)));
+
+ switch (oph->sap) {
+ case HNB_PRIM_SAPI_IUH:
+ return llsk_rx_iuh(hnb, oph);
+ case HNB_PRIM_SAPI_GTP:
+ case HNB_PRIM_SAPI_AUDIO:
+ LOGP(DLLSK, LOGL_ERROR, "Rx SAPI %u not yet implemented (len=%u)\n",
+ oph->sap, msgb_length(oph->msg));
+ return -EINVAL;
+ default:
+ LOGP(DLLSK, LOGL_ERROR, "Rx for unknwon SAPI %u (len=%u)\n",
+ oph->sap, msgb_length(oph->msg));
+ return -EINVAL;
+ }
+}
+
+int hnb_llsk_alloc(struct hnb *hnb)
+{
+ hnb->llsk_link = osmo_prim_srv_link_alloc(hnb);
+ osmo_prim_srv_link_set_priv(hnb->llsk_link, hnb);
+ osmo_prim_srv_link_set_log_category(hnb->llsk_link, DLLSK);
+ osmo_prim_srv_link_set_addr(hnb->llsk_link, HNB_PRIM_UD_SOCK_DEFAULT);
+ osmo_prim_srv_link_set_opened_conn_cb(hnb->llsk_link, llsk_opened_cb);
+ osmo_prim_srv_link_set_closed_conn_cb(hnb->llsk_link, llsk_closed_cb);
+ osmo_prim_srv_link_set_rx_sapi_version_cb(hnb->llsk_link, llsk_rx_sapi_version_cb);
+ osmo_prim_srv_link_set_rx_cb(hnb->llsk_link, llsk_rx_cb);
+ osmo_timer_setup(&hnb->llsk_defer_configure_ind_timer, llsk_defer_configure_ind_timer_cb, hnb);
+ return 0;
+}
diff --git a/src/osmo-hnodeb/llsk_iuh.c b/src/osmo-hnodeb/llsk_iuh.c
new file mode 100644
index 0000000..00c399a
--- /dev/null
+++ b/src/osmo-hnodeb/llsk_iuh.c
@@ -0,0 +1,347 @@
+/* (C) 2021 by sysmocom - s.f.m.c. GmbH <info at sysmocom.de>
+ * Author: Pau Espin Pedrol <pespin at sysmocom.de>
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/lienses/>.
+ *
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <inttypes.h>
+
+#include <osmocom/core/talloc.h>
+#include <osmocom/core/select.h>
+#include <osmocom/core/socket.h>
+
+#include <osmocom/rua/rua_msg_factory.h>
+
+#include <osmocom/hnodeb/hnodeb.h>
+#include <osmocom/hnodeb/llsk.h>
+#include <osmocom/hnodeb/hnb_prim.h>
+#include <osmocom/hnodeb/iuh.h>
+#include <osmocom/hnodeb/ranap.h>
+
+static size_t llsk_iuh_prim_size_tbl[4][_HNB_IUH_PRIM_MAX] = {
+ [PRIM_OP_REQUEST] = {
+ [HNB_IUH_PRIM_CONN_ESTABLISH] = sizeof(struct hnb_iuh_conn_establish_req_param),
+ [HNB_IUH_PRIM_CONN_RELEASE] = sizeof(struct hnb_iuh_conn_release_req_param),
+ [HNB_IUH_PRIM_CONN_DATA] = sizeof(struct hnb_iuh_conn_data_req_param),
+ [HNB_IUH_PRIM_UNITDATA] = sizeof(struct hnb_iuh_unitdata_req_param),
+ },
+ [PRIM_OP_RESPONSE] = {},
+ [PRIM_OP_INDICATION] = {
+ [HNB_IUH_PRIM_CONFIGURE] = sizeof(struct hnb_iuh_configure_ind_param),
+ [HNB_IUH_PRIM_CONN_DATA] = sizeof(struct hnb_iuh_conn_data_ind_param),
+ [HNB_IUH_PRIM_UNITDATA] = sizeof(struct hnb_iuh_unitdata_ind_param),
+ },
+ [PRIM_OP_CONFIRM] = {
+ [HNB_IUH_PRIM_CONN_ESTABLISH] = sizeof(struct hnb_iuh_conn_establish_cnf_param),
+ },
+};
+static inline size_t llsk_iuh_prim_size(enum hnb_iuh_prim_type ptype, enum osmo_prim_operation op)
+{
+ size_t val = llsk_iuh_prim_size_tbl[op][ptype];
+ if (val == 0) {
+ LOGP(DLLSK, LOGL_FATAL, "Expected prim_size != 0 for ptype=%u op=%u\n", ptype, op);
+ osmo_panic("Expected prim_size != 0 for ptype=%u op=%u\n", ptype, op);
+ }
+ return val;
+}
+
+const struct value_string hnb_iuh_prim_type_names[] = {
+ OSMO_VALUE_STRING(HNB_IUH_PRIM_CONFIGURE),
+ OSMO_VALUE_STRING(HNB_IUH_PRIM_CONN_ESTABLISH),
+ OSMO_VALUE_STRING(HNB_IUH_PRIM_CONN_RELEASE),
+ OSMO_VALUE_STRING(HNB_IUH_PRIM_CONN_DATA),
+ { 0, NULL }
+};
+
+
+struct hnb_iuh_prim *hnb_iuh_prim_alloc(enum hnb_iuh_prim_type ptype, enum osmo_prim_operation op, size_t extra_len)
+{
+ struct osmo_prim_hdr *oph;
+ size_t len = llsk_iuh_prim_size(ptype, op);
+
+ oph = osmo_prim_msgb_alloc(HNB_PRIM_SAPI_IUH, ptype, op, sizeof(*oph) + len + extra_len);
+ if (!oph)
+ return NULL;
+ msgb_put(oph->msg, len);
+
+ return (struct hnb_iuh_prim *)oph;
+}
+
+struct hnb_iuh_prim *hnb_iuh_makeprim_configure_ind(uint16_t mcc, uint16_t mnc,
+ uint16_t cell_identity,
+ uint16_t lac, uint8_t rac,
+ uint16_t sac, uint16_t rnc_id)
+{
+ struct hnb_iuh_prim *iuh_prim;
+
+ iuh_prim = hnb_iuh_prim_alloc(HNB_IUH_PRIM_CONFIGURE, PRIM_OP_INDICATION, 0);
+ iuh_prim->u.configure_ind.mcc = mcc;
+ iuh_prim->u.configure_ind.mnc = mnc;
+ iuh_prim->u.configure_ind.cell_identity = cell_identity;
+ iuh_prim->u.configure_ind.lac = lac;
+ iuh_prim->u.configure_ind.rac = rac;
+ iuh_prim->u.configure_ind.sac = sac;
+ iuh_prim->u.configure_ind.rnc_id = rnc_id;
+
+ return iuh_prim;
+}
+
+int llsk_iuh_tx_configure_ind(struct hnb *hnb)
+{
+ struct hnb_iuh_prim *iuh_prim;
+ int rc;
+
+ LOGP(DLLSK, LOGL_INFO, "Tx IUH-CONFIGURE.ind\n");
+ /* We are already registered, so configure the lower layers right now */
+ iuh_prim = hnb_iuh_makeprim_configure_ind(hnb->plmn.mcc, hnb->plmn.mnc,
+ hnb->cell_identity, hnb->lac,
+ hnb->rac, hnb->sac, hnb->rnc_id);
+ if ((rc = osmo_prim_srv_send(hnb->llsk, iuh_prim->hdr.msg)) < 0)
+ LOGP(DLLSK, LOGL_ERROR, "Failed sending IUH-CONFIGURE.ind\n");
+ return rc;
+}
+
+struct hnb_iuh_prim *hnb_iuh_makeprim_conn_establish_cnf(uint32_t context_id, uint8_t domain,
+ uint8_t cause)
+{
+ struct hnb_iuh_prim *iuh_prim;
+
+ iuh_prim = hnb_iuh_prim_alloc(HNB_IUH_PRIM_CONN_ESTABLISH, PRIM_OP_CONFIRM, 0);
+ iuh_prim->u.conn_establish_cnf.context_id = context_id;
+ iuh_prim->u.conn_establish_cnf.domain = domain;
+ iuh_prim->u.conn_establish_cnf.cause = cause;
+
+ return iuh_prim;
+}
+
+struct hnb_iuh_prim *hnb_iuh_makeprim_conn_data_ind(uint32_t context_id,
+ uint8_t domain,
+ const uint8_t *data,
+ uint32_t data_len)
+{
+ struct hnb_iuh_prim *iuh_prim;
+
+ iuh_prim = hnb_iuh_prim_alloc(HNB_IUH_PRIM_CONN_DATA, PRIM_OP_INDICATION, data_len);
+ iuh_prim->u.conn_data_ind.context_id = context_id;
+ iuh_prim->u.conn_data_ind.domain = domain;
+ iuh_prim->u.conn_data_ind.data_len = data_len;
+ if (data_len) {
+ msgb_put(iuh_prim->hdr.msg, data_len);
+ memcpy(iuh_prim->u.conn_data_ind.data, data, data_len);
+ }
+
+ return iuh_prim;
+}
+
+struct hnb_iuh_prim *hnb_iuh_makeprim_unitdata_ind(const uint8_t *data, uint32_t data_len)
+{
+ struct hnb_iuh_prim *iuh_prim;
+
+ iuh_prim = hnb_iuh_prim_alloc(HNB_IUH_PRIM_UNITDATA, PRIM_OP_INDICATION, data_len);
+ iuh_prim->u.unitdata_ind.data_len = data_len;
+ if (data_len) {
+ msgb_put(iuh_prim->hdr.msg, data_len);
+ memcpy(iuh_prim->u.unitdata_ind.data, data, data_len);
+ }
+
+ return iuh_prim;
+}
+
+static int llsk_rx_iuh_conn_establish_req(struct hnb *hnb, struct hnb_iuh_conn_establish_req_param *ce_req)
+{
+ struct hnb_ue *ue;
+ int rc = 0;
+
+ LOGP(DLLSK, LOGL_INFO, "Rx IUH-CONN_ESTABLISH.req ctx=%u is_ps=%u est_cause=%u data_len=%u\n",
+ ce_req->context_id, ce_req->domain, ce_req->est_cause, ce_req->data_len);
+
+ if (!hnb->registered) {
+ LOGP(DLLSK, LOGL_NOTICE, "Ignoring Rx IUH-CONN_ESTABLISH.req: HNB not registered to HNBGW!\n");
+ /* TODO: NACK it to lower layers */
+ return -EINVAL;
+ }
+
+ ue = hnb_find_ue_by_id(hnb, ce_req->context_id);
+ if (!ue) {
+ ue = hnb_ue_alloc(hnb, ce_req->context_id);
+ if (ce_req->domain) {
+ ue->conn_ps.active = true;
+ ue->conn_ps.conn_est_cnf_pending = true; /* Set to false once we receive first DT from HNBGW and send CONN_EST.cnf */
+
+ } else {
+ ue->conn_cs.active = true;
+ ue->conn_cs.conn_est_cnf_pending = true; /* Set to false once we receive first DT from HNBGW and send CONN_EST.cnf */
+ }
+ }
+ if (ce_req->data_len) {
+ struct msgb *rua_msg;
+ struct msgb *ranap_msg = hnb_ranap_msgb_alloc();
+ LOGP(DRUA, LOGL_DEBUG, "Tx RUA CONNECT ctx=%u is_ps=%u data_len=%u\n",
+ ce_req->context_id, ce_req->domain, ce_req->data_len);
+ memcpy(msgb_put(ranap_msg, ce_req->data_len), ce_req->data, ce_req->data_len);
+ rua_msg = rua_new_conn(ce_req->domain, ce_req->context_id, ranap_msg);
+ hnb_iuh_send(hnb, rua_msg);
+ }
+
+ return rc;
+}
+
+static int llsk_rx_iuh_conn_release_req(struct hnb *hnb, struct hnb_iuh_conn_release_req_param *rel_req)
+{
+ struct hnb_ue *ue;
+ struct msgb *rua_msg;
+ struct msgb *ranap_msg;
+ int rc = 0;
+
+ LOGP(DLLSK, LOGL_DEBUG, "Rx IUH-CONN_RELEASE.req ctx=%u is_ps=%u data_len=%u\n",
+ rel_req->context_id, rel_req->domain, rel_req->data_len);
+
+ if (!hnb->registered) {
+ LOGP(DLLSK, LOGL_NOTICE, "Rx IUH-CONN_RELEASE.req: Ignoring, HNB not registered to HNBGW!\n");
+ return -EINVAL;
+ }
+
+ ue = hnb_find_ue_by_id(hnb, rel_req->context_id);
+ if (!ue) {
+ LOGP(DLLSK, LOGL_ERROR, "Rx IUH-CONN_RELEASE.req: conn unknown! ctx=%u is_ps=%u data_len=%u\n",
+ rel_req->context_id, rel_req->domain, rel_req->data_len);
+ return -EINVAL;
+ }
+ hnb_ue_reset_chan(ue, !!rel_req->domain);
+ if (!ue->conn_cs.active && !ue->conn_ps.active) {
+ hnb_ue_free(ue);
+ ue = NULL;
+ }
+
+ LOGP(DRUA, LOGL_DEBUG, "Tx RUA DISC ctx=%u is_ps=%u data_len=%u\n",
+ rel_req->context_id, rel_req->domain, rel_req->data_len);
+ ranap_msg = hnb_ranap_msgb_alloc();
+ if (rel_req->data_len)
+ memcpy(msgb_put(ranap_msg, rel_req->data_len), rel_req->data, rel_req->data_len);
+
+ rua_msg = rua_new_disc(rel_req->domain, rel_req->context_id, ranap_msg);
+ hnb_iuh_send(hnb, rua_msg);
+ return rc;
+}
+
+static int llsk_rx_iuh_conn_data_req(struct hnb *hnb, struct hnb_iuh_conn_data_req_param *data_req)
+{
+ struct hnb_ue *ue;
+ struct msgb *rua_msg;
+ struct msgb *ranap_msg;
+ int rc = 0;
+
+ LOGP(DLLSK, LOGL_DEBUG, "Rx IUH-CONN_DATA.req ctx=%u is_ps=%u data_len=%u\n",
+ data_req->context_id, data_req->domain, data_req->data_len);
+
+ if (!hnb->registered) {
+ LOGP(DLLSK, LOGL_NOTICE, "Rx IUH-CONN_DATA.req: Ignoring, HNB not registered to HNBGW!\n");
+ /* TODO: NACK it to lower layers */
+ return -EINVAL;
+ }
+
+ ue = hnb_find_ue_by_id(hnb, data_req->context_id);
+ if (!ue) {
+ LOGP(DLLSK, LOGL_ERROR, "Rx IUH-CONN_DATA.req: conn unknown! ctx=%u is_ps=%u data_len=%u\n",
+ data_req->context_id, data_req->domain, data_req->data_len);
+ /* TODO: NACK it to lower layers */
+ return -EINVAL;
+ }
+
+ LOGP(DRUA, LOGL_DEBUG, "Tx RUA DT ctx=%u is_ps=%u data_len=%u\n",
+ data_req->context_id, data_req->domain, data_req->data_len);
+ ranap_msg = hnb_ranap_msgb_alloc();
+ if (data_req->data_len)
+ memcpy(msgb_put(ranap_msg, data_req->data_len), data_req->data, data_req->data_len);
+
+ rua_msg = rua_new_dt(data_req->domain, data_req->context_id, ranap_msg);
+ hnb_iuh_send(hnb, rua_msg);
+ return rc;
+}
+
+static int llsk_rx_iuh_unitdata_req(struct hnb *hnb, struct hnb_iuh_unitdata_req_param *ud_req)
+{
+ struct msgb *rua_msg;
+ struct msgb *ranap_msg;
+ int rc = 0;
+
+ LOGP(DLLSK, LOGL_DEBUG, "Rx IUH-UNITDATA.req data_len=%u\n", ud_req->data_len);
+
+ if (!hnb->registered) {
+ LOGP(DLLSK, LOGL_NOTICE, "Rx IUH-UNITDATA.req: Ignoring, HNB not registered to HNBGW!\n");
+ return -EINVAL;
+ }
+
+ LOGP(DRUA, LOGL_DEBUG, "Tx RUA UDT data_len=%u\n", ud_req->data_len);
+
+ ranap_msg = hnb_ranap_msgb_alloc();
+ if (ud_req->data_len)
+ memcpy(msgb_put(ranap_msg, ud_req->data_len), ud_req->data, ud_req->data_len);
+
+ rua_msg = rua_new_udt(ranap_msg);
+ hnb_iuh_send(hnb, rua_msg);
+ return rc;
+}
+
+int llsk_rx_iuh(struct hnb *hnb, struct osmo_prim_hdr *oph)
+{
+ size_t prim_size = llsk_iuh_prim_size(oph->primitive, oph->operation);
+
+ if (msgb_length(oph->msg) < prim_size) {
+ LOGP(DLLSK, LOGL_ERROR, "Rx IUH-%s.%s with length %u < %zu\n",
+ get_value_string(hnb_iuh_prim_type_names, oph->primitive),
+ get_value_string(osmo_prim_op_names, oph->operation),
+ msgb_length(oph->msg), prim_size);
+ return -EINVAL;
+ }
+
+ switch (oph->operation) {
+ case PRIM_OP_REQUEST:
+ switch (oph->primitive) {
+ case HNB_IUH_PRIM_CONN_ESTABLISH:
+ return llsk_rx_iuh_conn_establish_req(hnb, (struct hnb_iuh_conn_establish_req_param *)msgb_data(oph->msg));
+ case HNB_IUH_PRIM_CONN_RELEASE:
+ return llsk_rx_iuh_conn_release_req(hnb, (struct hnb_iuh_conn_release_req_param *)msgb_data(oph->msg));
+ case HNB_IUH_PRIM_CONN_DATA:
+ return llsk_rx_iuh_conn_data_req(hnb, (struct hnb_iuh_conn_data_req_param *)msgb_data(oph->msg));
+ case HNB_IUH_PRIM_UNITDATA:
+ return llsk_rx_iuh_unitdata_req(hnb, (struct hnb_iuh_unitdata_req_param *)msgb_data(oph->msg));
+ default:
+ LOGP(DLLSK, LOGL_ERROR, "Rx llsk-iuh unknown primitive %u (len=%u)\n",
+ oph->primitive, msgb_length(oph->msg));
+ return -EINVAL;
+ }
+ break;
+
+ case PRIM_OP_RESPONSE:
+ case PRIM_OP_INDICATION:
+ case PRIM_OP_CONFIRM:
+ default:
+ LOGP(DLLSK, LOGL_ERROR, "Rx llsk-iuh unexpected primitive operation %s::%s (len=%u)\n",
+ get_value_string(hnb_iuh_prim_type_names, oph->primitive),
+ get_value_string(osmo_prim_op_names, oph->operation),
+ msgb_length(oph->msg));
+ return -EINVAL;
+ }
+}
diff --git a/src/osmo-hnodeb/main.c b/src/osmo-hnodeb/main.c
index 12d98ff..6728a07 100644
--- a/src/osmo-hnodeb/main.c
+++ b/src/osmo-hnodeb/main.c
@@ -265,6 +265,13 @@
exit(1);
}
+ /* Start listening on lower layer unix domain socket: */
+ rc = osmo_prim_srv_link_open(g_hnb->llsk_link);
+ if (rc < 0) {
+ perror("Error opening lower layer socket");
+ exit(1);
+ }
+
rc = hnb_iuh_connect(g_hnb);
if (rc < 0) {
perror("Error connecting to Iuh port");
diff --git a/src/osmo-hnodeb/ranap.c b/src/osmo-hnodeb/ranap.c
index 99c4bab..3313f7b 100644
--- a/src/osmo-hnodeb/ranap.c
+++ b/src/osmo-hnodeb/ranap.c
@@ -27,3 +27,8 @@
#include <osmocom/hnodeb/rua.h>
#include <osmocom/hnodeb/ranap.h>
+
+struct msgb *hnb_ranap_msgb_alloc(void)
+{
+ return msgb_alloc(1000, "ranap_tx");
+}
diff --git a/src/osmo-hnodeb/rua.c b/src/osmo-hnodeb/rua.c
index 9bf5403..3a73f0c 100644
--- a/src/osmo-hnodeb/rua.c
+++ b/src/osmo-hnodeb/rua.c
@@ -32,10 +32,23 @@
#include <osmocom/hnodeb/iuh.h>
#include <osmocom/hnodeb/hnodeb.h>
+
+struct msgb *hnb_rua_msgb_alloc(void)
+{
+ return msgb_alloc(1000, "rua_tx");
+}
+
static void hnb_rua_dt_handle(struct hnb *hnb, ANY_t *in)
{
RUA_DirectTransferIEs_t ies;
int rc;
+ struct hnb_ue *ue;
+ struct hnb_iuh_prim *iuh_prim;
+ uint32_t context_id;
+ bool is_ps;
+ uint8_t *ranap_buf;
+ size_t ranap_buf_len;
+ bool *conn_est_cnf_pending;
rc = rua_decode_directtransferies(&ies, in);
if (rc < 0) {
@@ -43,7 +56,44 @@
return;
}
+ context_id = asn1bitstr_to_u24(&ies.context_ID);
+ is_ps = (ies.cN_DomainIndicator == RUA_CN_DomainIndicator_ps_domain);
+ ranap_buf = ies.ranaP_Message.buf;
+ ranap_buf_len = ies.ranaP_Message.size;
+ LOGP(DRUA, LOGL_DEBUG, "Rx RUA DT context_id=%u is_ps=%u ranap_len=%zu\n",
+ context_id, is_ps, ranap_buf_len);
+
+ if (!(ue = hnb_find_ue_by_id(hnb, context_id))) {
+ LOGP(DRUA, LOGL_ERROR, "Rx RUA DT: Failed finding ue context_id=%u is_ps=%u\n",
+ context_id, is_ps);
+ goto free_ret;
+ }
+
+ conn_est_cnf_pending = is_ps ? &ue->conn_ps.conn_est_cnf_pending :
+ &ue->conn_cs.conn_est_cnf_pending;
+ if (*conn_est_cnf_pending) {
+ *conn_est_cnf_pending = false;
+ LOGP(DLLSK, LOGL_INFO, "Tx IUH-CONN_ESTABLISH.cnf context_id=%u is_ps=%u\n",
+ context_id, is_ps);
+ iuh_prim = hnb_iuh_makeprim_conn_establish_cnf(context_id, is_ps, 0);
+ if ((rc = osmo_prim_srv_send(hnb->llsk, iuh_prim->hdr.msg)) < 0) {
+ LOGP(DRUA, LOGL_ERROR, "Failed sending IUH-CONN_ESTABLISH.cnf context_id=%u is_ps=%u\n",
+ context_id, is_ps);
+ goto free_ret;
+ }
+ }
+
+ LOGP(DLLSK, LOGL_DEBUG, "Tx IUH-CONN_DATA.ind context_id=%u is_ps=%u ranap_len=%zu\n",
+ context_id, is_ps, ranap_buf_len);
+ iuh_prim = hnb_iuh_makeprim_conn_data_ind(context_id, is_ps, ranap_buf, ranap_buf_len);
+ if ((rc = osmo_prim_srv_send(hnb->llsk, iuh_prim->hdr.msg)) < 0) {
+ LOGP(DRUA, LOGL_ERROR, "Failed sending IUH-CONN_DATA.ind context_id=%u is_ps=%u ranap_len=%zu\n",
+ context_id, is_ps, ranap_buf_len);
+ goto free_ret;
+ }
+
+free_ret:
/* FIXME: what to do with the asn1c-allocated memory */
rua_free_directtransferies(&ies);
}
@@ -52,18 +102,81 @@
{
RUA_ConnectionlessTransferIEs_t ies;
int rc;
+ struct hnb_iuh_prim *iuh_prim;
+ uint8_t *ranap_buf;
+ size_t ranap_buf_len;
rc = rua_decode_connectionlesstransferies(&ies, in);
if (rc < 0) {
LOGP(DRUA, LOGL_INFO, "failed to decode RUA CL IEs\n");
return;
}
+ ranap_buf = ies.ranaP_Message.buf;
+ ranap_buf_len = ies.ranaP_Message.size;
+ LOGP(DRUA, LOGL_DEBUG, "Rx RUA UDT ranap_len=%zu\n", ranap_buf_len);
+ LOGP(DLLSK, LOGL_DEBUG, "Tx IUH-UNITDATA.ind ranap_len=%zu\n", ranap_buf_len);
+ iuh_prim = hnb_iuh_makeprim_unitdata_ind(ranap_buf, ranap_buf_len);
+ if ((rc = osmo_prim_srv_send(hnb->llsk, iuh_prim->hdr.msg)) < 0) {
+ LOGP(DRUA, LOGL_ERROR, "Failed sending IUH-CONN_DATA.ind ranap_len=%zu\n",
+ ranap_buf_len);
+ goto free_ret;
+ }
+
+free_ret:
/* FIXME: what to do with the asn1c-allocated memory */
rua_free_connectionlesstransferies(&ies);
}
+
+static int hnb_rua_rx_initiating(struct hnb *hnb, RUA_InitiatingMessage_t *init)
+{
+ switch (init->procedureCode) {
+ case RUA_ProcedureCode_id_ConnectionlessTransfer:
+ LOGP(DRUA, LOGL_INFO, "RUA rx Initiating ConnectionlessTransfer\n");
+ hnb_rua_cl_handle(hnb, &init->value);
+ break;
+ case RUA_ProcedureCode_id_DirectTransfer:
+ LOGP(DRUA, LOGL_INFO, "RUA rx Initiating DirectTransfer\n");
+ hnb_rua_dt_handle(hnb, &init->value);
+ default:
+ LOGP(DRUA, LOGL_INFO, "RUA rx unknown Initiating message\n");
+ break;
+ }
+ return 0;
+}
+
+static int hnb_rua_rx_successful(struct hnb *hnb, RUA_SuccessfulOutcome_t *success)
+{
+ switch (success->procedureCode) {
+ case RUA_ProcedureCode_id_ConnectionlessTransfer:
+ LOGP(DRUA, LOGL_INFO, "RUA rx SuccessfulOutcome ConnectionlessTransfer\n");
+ hnb_rua_cl_handle(hnb, &success->value);
+ break;
+ case RUA_ProcedureCode_id_Connect:
+ LOGP(DRUA, LOGL_INFO, "RUA rx SuccessfulOutcome Connect\n");
+ break;
+ case RUA_ProcedureCode_id_DirectTransfer:
+ LOGP(DRUA, LOGL_INFO, "RUA rx SuccessfulOutcome DirectTransfer\n");
+ hnb_rua_dt_handle(hnb, &success->value);
+ break;
+ case RUA_ProcedureCode_id_Disconnect:
+ LOGP(DRUA, LOGL_INFO, "RUA rx SuccessfulOutcome Disconnect\n");
+ break;
+ case RUA_ProcedureCode_id_ErrorIndication:
+ LOGP(DRUA, LOGL_INFO, "RUA rx SuccessfulOutcome ErrorIndication\n");
+ break;
+ case RUA_ProcedureCode_id_privateMessage:
+ LOGP(DRUA, LOGL_INFO, "RUA rx SuccessfulOutcome privateMessage\n");
+ break;
+ default:
+ LOGP(DRUA, LOGL_INFO, "RUA rx unknown SuccessfulOutcome message\n");
+ break;
+ }
+ return 0;
+}
+
int hnb_rua_rx(struct hnb *hnb, struct msgb *msg)
{
RUA_RUA_PDU_t _pdu, *pdu = &_pdu;
@@ -79,11 +192,9 @@
switch (pdu->present) {
case RUA_RUA_PDU_PR_successfulOutcome:
- LOGP(DRUA, LOGL_INFO, "RUA_RUA_PDU_PR_successfulOutcome\n");
- break;
+ return hnb_rua_rx_successful(hnb, &pdu->choice.successfulOutcome);
case RUA_RUA_PDU_PR_initiatingMessage:
- LOGP(DRUA, LOGL_INFO, "RUA_RUA_PDU_PR_initiatingMessage\n");
- break;
+ return hnb_rua_rx_initiating(hnb, &pdu->choice.initiatingMessage);
case RUA_RUA_PDU_PR_NOTHING:
LOGP(DRUA, LOGL_INFO, "RUA_RUA_PDU_PR_NOTHING\n");
break;
@@ -95,31 +206,5 @@
break;
}
- switch (pdu->choice.successfulOutcome.procedureCode) {
- case RUA_ProcedureCode_id_ConnectionlessTransfer:
- LOGP(DRUA, LOGL_INFO, "RUA rx Connectionless Transfer\n");
- hnb_rua_cl_handle(hnb, &pdu->choice.successfulOutcome.value);
- break;
- case RUA_ProcedureCode_id_Connect:
- LOGP(DRUA, LOGL_INFO, "RUA rx Connect\n");
- break;
- case RUA_ProcedureCode_id_DirectTransfer:
- LOGP(DRUA, LOGL_INFO, "RUA rx DirectTransfer\n");
- hnb_rua_dt_handle(hnb, &pdu->choice.successfulOutcome.value);
- break;
- case RUA_ProcedureCode_id_Disconnect:
- LOGP(DRUA, LOGL_INFO, "RUA rx Disconnect\n");
- break;
- case RUA_ProcedureCode_id_ErrorIndication:
- LOGP(DRUA, LOGL_INFO, "RUA rx ErrorIndication\n");
- break;
- case RUA_ProcedureCode_id_privateMessage:
- LOGP(DRUA, LOGL_INFO, "RUA rx privateMessage\n");
- break;
- default:
- LOGP(DRUA, LOGL_INFO, "RUA rx unknown message\n");
- break;
- }
-
return 0;
}
diff --git a/src/osmo-hnodeb/vty.c b/src/osmo-hnodeb/vty.c
index 93ec25f..131dc6b 100644
--- a/src/osmo-hnodeb/vty.c
+++ b/src/osmo-hnodeb/vty.c
@@ -47,6 +47,10 @@
vty->node = HNODEB_NODE;
vty->index = g_hnb;
break;
+ case LLSK_NODE:
+ vty->node = HNODEB_NODE;
+ vty->index = g_hnb;
+ break;
case HNODEB_NODE:
vty->node = CONFIG_NODE;
vty->index = g_hnb;
@@ -247,6 +251,36 @@
return CMD_SUCCESS;
}
+static struct cmd_node llsk_node = {
+ LLSK_NODE,
+ "%s(config-ll-socket)# ",
+ 1,
+};
+
+#define LLSK_STR "Configure the Lower Layer Unix Domain Socket\n"
+
+DEFUN(cfg_hnodeb_llsk,
+ cfg_hnodeb_llsk_cmd,
+ "ll-socket", LLSK_STR)
+{
+ OSMO_ASSERT(g_hnb);
+ vty->index = g_hnb;
+ vty->node = LLSK_NODE;
+
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_hnodeb_llsk_path, cfg_hnodeb_llsk_path_cmd,
+ "path PATH",
+ "Configure the Lower Layer Unix Domain Socket path\n"
+ "UNIX socket path\n")
+{
+ osmo_prim_srv_link_set_addr(g_hnb->llsk_link, argv[0]);
+
+ /* FIXME: re-open the interface? */
+ return CMD_SUCCESS;
+}
+
static int config_write_hnodeb(struct vty *vty)
{
@@ -266,10 +300,11 @@
vty_out(vty, " local-port %u%s", g_hnb->iuh.local_port, VTY_NEWLINE);
vty_out(vty, " remote-ip %s%s", g_hnb->iuh.remote_addr, VTY_NEWLINE);
vty_out(vty, " remote-port %u%s", g_hnb->iuh.remote_port, VTY_NEWLINE);
+ vty_out(vty, " ll-socket%s", VTY_NEWLINE);
+ vty_out(vty, " path %s%s", osmo_prim_srv_link_get_addr(g_hnb->llsk_link), VTY_NEWLINE);
return CMD_SUCCESS;
}
-
#define RANAP_STR "RANAP related commands\n"
#define CSPS_STR "Circuit Switched\n" "Packet Switched\n"
@@ -321,6 +356,9 @@
install_element(IUH_NODE, &cfg_hnodeb_iuh_local_port_cmd);
install_element(IUH_NODE, &cfg_hnodeb_iuh_remote_ip_cmd);
install_element(IUH_NODE, &cfg_hnodeb_iuh_remote_port_cmd);
+ install_element(HNODEB_NODE, &cfg_hnodeb_llsk_cmd);
+ install_node(&llsk_node, NULL);
+ install_element(LLSK_NODE, &cfg_hnodeb_llsk_path_cmd);
install_element_ve(&asn_dbg_cmd);
install_element_ve(&ranap_reset_cmd);
--
To view, visit https://gerrit.osmocom.org/c/osmo-hnodeb/+/26357
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Gerrit-Project: osmo-hnodeb
Gerrit-Branch: master
Gerrit-Change-Id: Icaabb2206d6f141d4fba47dedf71f8ec37e6257d
Gerrit-Change-Number: 26357
Gerrit-PatchSet: 13
Gerrit-Owner: pespin <pespin at sysmocom.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: laforge <laforge at osmocom.org>
Gerrit-Reviewer: pespin <pespin at sysmocom.de>
Gerrit-MessageType: merged
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