diff options
Diffstat (limited to 'include/linkset.h')
| -rw-r--r-- | include/linkset.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/include/linkset.h b/include/linkset.h new file mode 100644 index 0000000..1385cf1 --- /dev/null +++ b/include/linkset.h @@ -0,0 +1,121 @@ +/* Everything related to linksets */ +/* + * (C) 2010-2013 by Holger Hans Peter Freyther <zecke@selfish.org> + * (C) 2010-2013 by On-Waves + * 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/>. + * + */ + +#ifndef linkset_h +#define linkset_h + +#include <osmocom/core/linuxlist.h> +#include <osmocom/core/timer.h> + +#include <stdint.h> + +struct msgb; + +/** + * The state of the mtp_link in terms of layer3 and upwards + */ +struct mtp_link_set { + struct llist_head entry; + int nr; + char *name; + + /* + * Callbacks for the SS7 application + */ + void (*on_down) (struct mtp_link_set *set); + void (*on_up) (struct mtp_link_set *set); + void (*on_sccp) (struct mtp_link_set *set, struct msgb *msg, int sls); + void (*on_isup) (struct mtp_link_set *set, struct msgb *msg, int sls); + + + /** + * Routing is very limited. We can only forward to one + * other STP/Endpoint. For ISUP and SCCP we can statically + * send it to another destination. We need to follow Q.704 + * more properly here. + * DPC/OPC are the ones for the linkset, + * sccp_dpc/isup_dpc are where we will send SCCP/ISUP messages + * sccp_opc/isup_opc are what we announce in the TFP + */ + int dpc, opc; + int sccp_dpc, isup_dpc; + int sccp_opc, isup_opc; + int ni; + int spare; + + + /* internal state */ + /* the MTP1 link is up */ + int available; + int running; + int sccp_up; + int linkset_up; + + int last_sls; + + struct llist_head links; + int nr_links; + struct mtp_link *slc[16]; + int sltm_once; + + /* ssn map */ + int supported_ssn[256]; + + int pcap_fd; + + /* special handling */ + int pass_all_isup; + + /* statistics */ + struct rate_ctr_group *ctrg; + + /* statistics for routing */ + int timeout_t18; + int timeout_t20; + struct osmo_timer_list T18; + struct osmo_timer_list T20; + + /* custom data */ + struct bsc_data *bsc; + struct ss7_application *app; +}; + +void mtp_link_set_stop(struct mtp_link_set *set); +void mtp_link_set_reset(struct mtp_link_set *set); +int mtp_link_set_data(struct mtp_link *link, struct msgb *msg); +int mtp_link_handle_data(struct mtp_link *link, struct msgb *msg); +int mtp_link_set_submit_sccp_data(struct mtp_link_set *set, int sls, const uint8_t *data, unsigned int length); +int mtp_link_set_submit_isup_data(struct mtp_link_set *set, int sls, const uint8_t *data, unsigned int length); + +void mtp_link_set_init_slc(struct mtp_link_set *set); + +/* link management */ +struct mtp_link_set *mtp_link_set_alloc(struct bsc_data *bsc); +struct mtp_link_set *mtp_link_set_num(struct bsc_data *bsc, int num); + +/* to be implemented for MSU sending */ +int mtp_link_set_send(struct mtp_link_set *set, struct msgb *msg); + +/* internal routines */ +struct msgb *mtp_msg_alloc(struct mtp_link_set *set); + + +#endif |