diff options
| -rw-r--r-- | include/osmocom/sigtran/Makefile.am | 4 | ||||
| -rw-r--r-- | include/osmocom/sigtran/sccp_helpers.h | 33 | ||||
| -rw-r--r-- | src/Makefile.am | 2 | ||||
| -rw-r--r-- | src/sccp_helpers.c | 135 |
4 files changed, 172 insertions, 2 deletions
diff --git a/include/osmocom/sigtran/Makefile.am b/include/osmocom/sigtran/Makefile.am index adb0997..e168256 100644 --- a/include/osmocom/sigtran/Makefile.am +++ b/include/osmocom/sigtran/Makefile.am @@ -1,4 +1,6 @@ -sigtran_HEADERS = m3ua_types.h xua_types.h xua_msg.h m2ua_types.h sccp_sap.h sua.h sigtran_sap.h +sigtran_HEADERS = m3ua_types.h xua_types.h xua_msg.h m2ua_types.h sccp_sap.h \ + sua.h sigtran_sap.h sccp_helpers.h + sigtrandir = $(includedir)/osmocom/sigtran sigtran_prot_HEADERS = protocol/sua.h diff --git a/include/osmocom/sigtran/sccp_helpers.h b/include/osmocom/sigtran/sccp_helpers.h new file mode 100644 index 0000000..089d69a --- /dev/null +++ b/include/osmocom/sigtran/sccp_helpers.h @@ -0,0 +1,33 @@ +#pragma once +#include <unistd.h> +#include <osmocom/core/msgb.h> +#include <osmocom/sigtran/sccp_sap.h> +#include <osmocom/sigtran/sua.h> + +int sccp_tx_unitdata(struct osmo_sua_link *link, + const struct osmo_sccp_addr *calling_addr, + const struct osmo_sccp_addr *called_addr, + uint8_t *data, unsigned int len); + +int sccp_tx_unitdata_msg(struct osmo_sua_link *link, + const struct osmo_sccp_addr *calling_addr, + const struct osmo_sccp_addr *called_addr, + struct msgb *msg); + +void sccp_make_addr_pc_ssn(struct osmo_sccp_addr *addr, uint32_t pc, uint32_t ssn); + +int sccp_tx_conn_req(struct osmo_sua_link *link, uint32_t conn_id, + const struct osmo_sccp_addr *calling_addr, + const struct osmo_sccp_addr *called_addr, + uint8_t *data, unsigned int len); + +int sccp_tx_conn_req_msg(struct osmo_sua_link *link, uint32_t conn_id, + const struct osmo_sccp_addr *calling_addr, + const struct osmo_sccp_addr *called_addr, + struct msgb *msg); + +int sccp_tx_data(struct osmo_sua_link *link, uint32_t conn_id, + uint8_t *data, unsigned int len); + +int sccp_tx_data_msg(struct osmo_sua_link *link, uint32_t conn_id, + struct msgb *msg); diff --git a/src/Makefile.am b/src/Makefile.am index 238a840..26482a0 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -24,6 +24,6 @@ lib_LTLIBRARIES = libosmo-sigtran.la # documentation before making any modification LIBVERSION=0:0:0 -libosmo_sigtran_la_SOURCES = sccp_sap.c sua.c xua_msg.c +libosmo_sigtran_la_SOURCES = sccp_sap.c sua.c xua_msg.c sccp_helpers.c libosmo_sigtran_la_LDFLAGS = -version-info $(LIBVERSION) -no-undefined -export-symbols-regex '^osmo_' libosmo_sigtran_la_LIBADD = $(LIBOSMOCORE_LIBS) $(LIBOSMONETIF_LIBS) $(LIBSCTP_LIBS) diff --git a/src/sccp_helpers.c b/src/sccp_helpers.c new file mode 100644 index 0000000..cdb26e7 --- /dev/null +++ b/src/sccp_helpers.c @@ -0,0 +1,135 @@ +/* SCCP User SAP helper functions (move to libosmo-sigtran?) */ + +/* (C) 2015 by Harald Welte <laforge@gnumonks.org> + * 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/licenses/>. + * + */ + +#include <string.h> + +#include <osmocom/sigtran/sccp_sap.h> +#include <osmocom/sigtran/sua.h> + +#include "sccp_helpers.h" + +void sccp_make_addr_pc_ssn(struct osmo_sccp_addr *addr, uint32_t pc, uint32_t ssn) +{ + addr->presence = OSMO_SCCP_ADDR_T_SSN | OSMO_SCCP_ADDR_T_PC; + addr->ssn = ssn; + addr->pc = pc; +} + +int sccp_tx_unitdata(struct osmo_sua_link *link, + const struct osmo_sccp_addr *calling_addr, + const struct osmo_sccp_addr *called_addr, + uint8_t *data, unsigned int len) +{ + struct msgb *msg = msgb_alloc(1024, "sccp_tx_unitdata"); + struct osmo_scu_prim *prim; + struct osmo_scu_unitdata_param *param; + + prim = (struct osmo_scu_prim *) msgb_put(msg, sizeof(*prim)); + param = &prim->u.unitdata; + sccp_make_addr_pc_ssn(¶m->calling_addr, 1, OSMO_SCCP_SSN_RANAP); + sccp_make_addr_pc_ssn(¶m->called_addr, 2, OSMO_SCCP_SSN_RANAP); + osmo_prim_init(&prim->oph, SCCP_SAP_USER, OSMO_SCU_PRIM_N_UNITDATA, PRIM_OP_REQUEST, msg); + + msg->l2h = msgb_put(msg, len); + memcpy(msg->l2h, data, len); + + return osmo_sua_user_link_down(link, &prim->oph); +} + +int sccp_tx_unitdata_msg(struct osmo_sua_link *link, + const struct osmo_sccp_addr *calling_addr, + const struct osmo_sccp_addr *called_addr, + struct msgb *msg) +{ + int rc; + + rc = sccp_tx_unitdata(link, calling_addr, called_addr, + msg->data, msgb_length(msg)); + msgb_free(msg); + + return rc; +} + +int sccp_tx_conn_req(struct osmo_sua_link *link, uint32_t conn_id, + const struct osmo_sccp_addr *calling_addr, + const struct osmo_sccp_addr *called_addr, + uint8_t *data, unsigned int len) +{ + struct msgb *msg = msgb_alloc(1024, "sccp_tx_conn_req"); + struct osmo_scu_prim *prim; + + prim = (struct osmo_scu_prim *) msgb_put(msg, sizeof(*prim)); + osmo_prim_init(&prim->oph, SCCP_SAP_USER, + OSMO_SCU_PRIM_N_CONNECT, + PRIM_OP_REQUEST, msg); + sccp_make_addr_pc_ssn(&prim->u.connect.calling_addr, 1, OSMO_SCCP_SSN_RANAP); + prim->u.connect.sccp_class = 2; + prim->u.connect.conn_id = conn_id; + + if (data && len) { + msg->l2h = msgb_put(msg, len); + memcpy(msg->l2h, data, len); + } + + return osmo_sua_user_link_down(link, &prim->oph); +} + +int sccp_tx_conn_req_msg(struct osmo_sua_link *link, uint32_t conn_id, + const struct osmo_sccp_addr *calling_addr, + const struct osmo_sccp_addr *called_addr, + struct msgb *msg) +{ + int rc; + + rc = sccp_tx_conn_req(link, conn_id, calling_addr, called_addr, + msg->data, msgb_length(msg)); + msgb_free(msg); + + return rc; +} + +int sccp_tx_data(struct osmo_sua_link *link, uint32_t conn_id, + uint8_t *data, unsigned int len) +{ + struct msgb *msg = msgb_alloc(1024, "sccp_tx_data"); + struct osmo_scu_prim *prim; + + prim = (struct osmo_scu_prim *) msgb_put(msg, sizeof(*prim)); + osmo_prim_init(&prim->oph, SCCP_SAP_USER, + OSMO_SCU_PRIM_N_DATA, + PRIM_OP_REQUEST, msg); + prim->u.data.conn_id = conn_id; + + msg->l2h = msgb_put(msg, len); + memcpy(msg->l2h, data, len); + + return osmo_sua_user_link_down(link, &prim->oph); +} + +int sccp_tx_data_msg(struct osmo_sua_link *link, uint32_t conn_id, + struct msgb *msg) +{ + int rc; + + rc = sccp_tx_data(link, conn_id, msg->data, msgb_length(msg)); + msgb_free(msg); + + return rc; +} |