Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 1 | /* Everything related to the BSC connection */ |
| 2 | /* |
Holger Hans Peter Freyther | c840569 | 2011-01-02 20:24:08 +0100 | [diff] [blame] | 3 | * (C) 2010-2011 by Holger Hans Peter Freyther <zecke@selfish.org> |
| 4 | * (C) 2010-2011 by On-Waves |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 5 | * All Rights Reserved |
| 6 | * |
Holger Hans Peter Freyther | de56c22 | 2011-01-16 17:45:14 +0100 | [diff] [blame] | 7 | * This program is free software: you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU Affero General Public License as published by |
| 9 | * the Free Software Foundation, either version 3 of the License, or |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
Holger Hans Peter Freyther | de56c22 | 2011-01-16 17:45:14 +0100 | [diff] [blame] | 15 | * GNU Affero General Public License for more details. |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 16 | * |
Holger Hans Peter Freyther | de56c22 | 2011-01-16 17:45:14 +0100 | [diff] [blame] | 17 | * You should have received a copy of the GNU Affero General Public License |
| 18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 19 | * |
| 20 | */ |
| 21 | |
| 22 | #ifndef BSC_DATA_H |
| 23 | #define BSC_DATA_H |
| 24 | |
Holger Hans Peter Freyther | 0e2f911 | 2011-01-17 11:54:39 +0100 | [diff] [blame] | 25 | #include "mtp_data.h" |
| 26 | |
Holger Hans Peter Freyther | cbf7d18 | 2010-07-31 05:25:35 +0800 | [diff] [blame] | 27 | #include <osmocore/linuxlist.h> |
| 28 | #include <osmocore/select.h> |
| 29 | #include <osmocore/timer.h> |
| 30 | #include <osmocore/write_queue.h> |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 31 | |
Holger Hans Peter Freyther | 0e4e35f | 2010-09-30 03:04:28 +0800 | [diff] [blame] | 32 | #include <osmocore/protocol/gsm_04_08.h> |
| 33 | |
Holger Hans Peter Freyther | cf381e2 | 2010-08-04 18:39:26 +0800 | [diff] [blame] | 34 | #include <osmocom/sccp/sccp.h> |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 35 | |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 36 | |
| 37 | #include <netinet/in.h> |
| 38 | #include <arpa/inet.h> |
| 39 | |
| 40 | struct bsc_data; |
| 41 | struct snmp_mtp_session; |
| 42 | |
Holger Hans Peter Freyther | e86c02e | 2011-02-10 15:32:14 +0100 | [diff] [blame] | 43 | /** |
| 44 | * Struct holding the BSC to MSC forwarding state. |
| 45 | */ |
| 46 | struct bsc_msc_forward { |
| 47 | /* back pointer */ |
| 48 | struct bsc_data *bsc_data; |
| 49 | |
| 50 | /* the linkset we are using here */ |
| 51 | struct mtp_link_set *bsc; |
| 52 | |
| 53 | /* MSC */ |
| 54 | char *msc_address; |
| 55 | struct write_queue msc_connection; |
| 56 | struct timer_list reconnect_timer; |
| 57 | int first_contact; |
| 58 | int msc_time; |
| 59 | struct timer_list msc_timeout; |
| 60 | int msc_ip_dscp; |
| 61 | |
| 62 | int msc_link_down; |
| 63 | struct llist_head sccp_connections; |
| 64 | int reset_count; |
| 65 | |
| 66 | /* LAC of the cell */ |
| 67 | struct gsm48_loc_area_id lai; |
| 68 | uint16_t mcc; |
| 69 | uint16_t mnc; |
| 70 | uint16_t lac; |
| 71 | |
| 72 | const char *token; |
| 73 | |
| 74 | /* timeouts for the msc connection */ |
| 75 | int ping_time; |
| 76 | int pong_time; |
| 77 | struct timer_list ping_timeout; |
| 78 | struct timer_list pong_timeout; |
| 79 | struct timer_list reset_timeout; |
| 80 | |
| 81 | /* mgcp messgaes */ |
| 82 | struct write_queue mgcp_agent; |
| 83 | |
| 84 | /* do nothing with the data coming from the MSC */ |
| 85 | int forward_only; |
| 86 | }; |
| 87 | |
Holger Hans Peter Freyther | f38114e | 2011-01-20 21:11:13 +0100 | [diff] [blame] | 88 | struct mtp_udp_data { |
| 89 | struct write_queue write_queue; |
Holger Hans Peter Freyther | 083a30b | 2011-01-21 12:57:12 +0100 | [diff] [blame] | 90 | struct timer_list snmp_poll; |
Holger Hans Peter Freyther | f38114e | 2011-01-20 21:11:13 +0100 | [diff] [blame] | 91 | |
| 92 | struct llist_head links; |
| 93 | }; |
| 94 | |
Holger Hans Peter Freyther | 0e2f911 | 2011-01-17 11:54:39 +0100 | [diff] [blame] | 95 | struct mtp_udp_link { |
| 96 | /* subclass */ |
| 97 | struct mtp_link base; |
Holger Hans Peter Freyther | fe72c16 | 2011-01-04 13:21:52 +0100 | [diff] [blame] | 98 | |
Holger Hans Peter Freyther | 0e2f911 | 2011-01-17 11:54:39 +0100 | [diff] [blame] | 99 | /* UDP specific stuff */ |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 100 | struct bsc_data *bsc; |
Holger Hans Peter Freyther | 0e2f911 | 2011-01-17 11:54:39 +0100 | [diff] [blame] | 101 | int link_index; |
| 102 | int reset_timeout; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 103 | |
Holger Hans Peter Freyther | f38114e | 2011-01-20 21:11:13 +0100 | [diff] [blame] | 104 | struct sockaddr_in remote; |
| 105 | |
| 106 | struct mtp_udp_data *data; |
| 107 | struct llist_head entry; |
Holger Hans Peter Freyther | 3a1c0af | 2011-01-24 20:21:11 +0100 | [diff] [blame] | 108 | |
| 109 | /* snmp for controlling the link */ |
| 110 | struct snmp_mtp_session *session; |
Holger Hans Peter Freyther | f38114e | 2011-01-20 21:11:13 +0100 | [diff] [blame] | 111 | }; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 112 | |
Holger Hans Peter Freyther | a310e53 | 2011-01-22 16:34:16 +0100 | [diff] [blame] | 113 | enum { |
| 114 | APP_CELLMGR, |
| 115 | APP_RELAY, |
| 116 | APP_STP, |
| 117 | }; |
| 118 | |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 119 | struct bsc_data { |
Holger Hans Peter Freyther | a310e53 | 2011-01-22 16:34:16 +0100 | [diff] [blame] | 120 | int app; |
| 121 | |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 122 | struct timer_list start_timer; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 123 | int setup; |
Holger Hans Peter Freyther | 644aafb | 2011-01-03 23:51:07 +0100 | [diff] [blame] | 124 | int pcap_fd; |
| 125 | int udp_reset_timeout; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 126 | |
Holger Hans Peter Freyther | f38114e | 2011-01-20 21:11:13 +0100 | [diff] [blame] | 127 | /* udp code */ |
| 128 | struct mtp_udp_data udp_data; |
| 129 | |
Holger Hans Peter Freyther | 7942abc | 2010-09-30 00:34:46 +0800 | [diff] [blame] | 130 | int dpc; |
| 131 | int opc; |
Holger Hans Peter Freyther | 7a72556 | 2011-01-01 13:34:58 +0100 | [diff] [blame] | 132 | int sccp_opc; |
Holger Hans Peter Freyther | d8a73e2 | 2011-01-17 22:37:11 +0100 | [diff] [blame] | 133 | int isup_opc; |
Holger Hans Peter Freyther | 7942abc | 2010-09-30 00:34:46 +0800 | [diff] [blame] | 134 | int src_port; |
| 135 | int udp_port; |
| 136 | char *udp_ip; |
Holger Hans Peter Freyther | c6bfa27 | 2011-01-22 17:06:34 +0100 | [diff] [blame] | 137 | int udp_nr_links; |
Holger Hans Peter Freyther | 7942abc | 2010-09-30 00:34:46 +0800 | [diff] [blame] | 138 | int once; |
Holger Hans Peter Freyther | 0e4e35f | 2010-09-30 03:04:28 +0800 | [diff] [blame] | 139 | |
Holger Hans Peter Freyther | b38b33b | 2010-11-26 21:21:04 +0100 | [diff] [blame] | 140 | /* the network header to use */ |
| 141 | int ni_ni; |
| 142 | int ni_spare; |
| 143 | |
Holger Hans Peter Freyther | f603f28 | 2011-01-30 00:24:15 +0100 | [diff] [blame] | 144 | /* isup handling */ |
| 145 | int isup_pass; |
| 146 | |
Holger Hans Peter Freyther | 599c9a4 | 2011-02-15 11:18:38 +0100 | [diff] [blame^] | 147 | /* MTP Links */ |
| 148 | struct llist_head linksets; |
| 149 | int num_linksets; |
Holger Hans Peter Freyther | 0452f22 | 2011-02-03 13:35:42 +0100 | [diff] [blame] | 150 | |
| 151 | /* inject */ |
Holger Hans Peter Freyther | ee63d7d | 2011-02-10 12:39:05 +0100 | [diff] [blame] | 152 | int allow_inject; |
Holger Hans Peter Freyther | 0452f22 | 2011-02-03 13:35:42 +0100 | [diff] [blame] | 153 | struct bsc_fd inject_fd; |
| 154 | struct llist_head inject_list; |
Holger Hans Peter Freyther | e86c02e | 2011-02-10 15:32:14 +0100 | [diff] [blame] | 155 | |
| 156 | /* MSC related data... currently only one is supported */ |
| 157 | struct bsc_msc_forward msc_forward; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 158 | }; |
| 159 | |
| 160 | /* bsc related functions */ |
Holger Hans Peter Freyther | e86c02e | 2011-02-10 15:32:14 +0100 | [diff] [blame] | 161 | void release_bsc_resources(struct bsc_msc_forward *fw); |
Holger Hans Peter Freyther | c840569 | 2011-01-02 20:24:08 +0100 | [diff] [blame] | 162 | |
| 163 | void mtp_linkset_down(struct mtp_link_set *); |
| 164 | void mtp_linkset_up(struct mtp_link_set *); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 165 | |
| 166 | /* msc related functions */ |
Holger Hans Peter Freyther | e86c02e | 2011-02-10 15:32:14 +0100 | [diff] [blame] | 167 | int msc_init(struct bsc_msc_forward *bsc, int mgcp); |
| 168 | void msc_send_rlc(struct bsc_msc_forward *bsc, struct sccp_source_reference *src, struct sccp_source_reference *dest); |
| 169 | void msc_send_reset(struct bsc_msc_forward *bsc); |
| 170 | void msc_send_msg(struct bsc_msc_forward *bsc, int rc, struct sccp_parse_result *, struct msgb *msg); |
| 171 | void msc_send_direct(struct bsc_msc_forward *bsc, struct msgb *msg); |
| 172 | void msc_close_connection(struct bsc_msc_forward *data); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 173 | |
| 174 | /* connection tracking and action */ |
Holger Hans Peter Freyther | e86c02e | 2011-02-10 15:32:14 +0100 | [diff] [blame] | 175 | void update_con_state(struct bsc_msc_forward *fw, int rc, struct sccp_parse_result *result, struct msgb *msg, int from_msc, int sls); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 176 | |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 177 | /* udp init */ |
Holger Hans Peter Freyther | 3a1c0af | 2011-01-24 20:21:11 +0100 | [diff] [blame] | 178 | int link_global_init(struct mtp_udp_data *data, int src_port); |
| 179 | int link_udp_init(struct mtp_udp_link *data, char *dest_ip, int port); |
Holger Hans Peter Freyther | 89fa11a | 2011-02-10 18:26:07 +0100 | [diff] [blame] | 180 | struct mtp_link_set *link_init(struct bsc_data *bsc); |
Holger Hans Peter Freyther | fe72c16 | 2011-01-04 13:21:52 +0100 | [diff] [blame] | 181 | int link_shutdown_all(struct mtp_link_set *); |
| 182 | int link_reset_all(struct mtp_link_set *); |
| 183 | int link_clear_all(struct mtp_link_set *); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 184 | |
| 185 | /* MGCP */ |
Holger Hans Peter Freyther | e86c02e | 2011-02-10 15:32:14 +0100 | [diff] [blame] | 186 | void mgcp_forward(struct bsc_msc_forward *bsc, const uint8_t *data, unsigned int length); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 187 | |
Holger Hans Peter Freyther | ddf8eae | 2011-01-22 17:36:01 +0100 | [diff] [blame] | 188 | /* pcap */ |
Holger Hans Peter Freyther | 36260e9 | 2011-01-22 17:37:56 +0100 | [diff] [blame] | 189 | enum { |
| 190 | NET_IN, |
| 191 | NET_OUT, |
| 192 | }; |
| 193 | int mtp_handle_pcap(struct mtp_link *, int dir, const uint8_t *data, int length); |
Holger Hans Peter Freyther | ddf8eae | 2011-01-22 17:36:01 +0100 | [diff] [blame] | 194 | |
Holger Hans Peter Freyther | 2ff47b8 | 2011-02-15 20:25:10 +0100 | [diff] [blame] | 195 | struct bsc_data *bsc_data_create(); |
| 196 | |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 197 | #endif |