| /* 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; |
| } |