Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 1 | /* MTP layer3 main handling code */ |
| 2 | /* |
Holger Hans Peter Freyther | 0452f22 | 2011-02-03 13:35:42 +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 | #include <mtp_data.h> |
| 22 | #include <mtp_level3.h> |
Holger Hans Peter Freyther | fe72c16 | 2011-01-04 13:21:52 +0100 | [diff] [blame] | 23 | #include <bsc_data.h> |
Holger Hans Peter Freyther | cbf7d18 | 2010-07-31 05:25:35 +0800 | [diff] [blame] | 24 | #include <cellmgr_debug.h> |
Holger Hans Peter Freyther | 433ea2f | 2010-12-10 07:34:01 +0100 | [diff] [blame] | 25 | #include <isup_types.h> |
Holger Hans Peter Freyther | c5d897e | 2011-01-21 20:54:55 +0100 | [diff] [blame] | 26 | #include <counter.h> |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 27 | |
Holger Hans Peter Freyther | cbf7d18 | 2010-07-31 05:25:35 +0800 | [diff] [blame] | 28 | #include <osmocore/talloc.h> |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 29 | |
Holger Hans Peter Freyther | cf381e2 | 2010-08-04 18:39:26 +0800 | [diff] [blame] | 30 | #include <osmocom/sccp/sccp.h> |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 31 | |
| 32 | #include <arpa/inet.h> |
| 33 | |
| 34 | #include <string.h> |
| 35 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 36 | static int mtp_int_submit(struct mtp_link_set *set, int pc, int sls, int type, const uint8_t *data, unsigned int length); |
Holger Hans Peter Freyther | 3aad776 | 2010-12-10 12:18:57 +0100 | [diff] [blame] | 37 | |
Holger Hans Peter Freyther | 9543f4a | 2011-01-24 20:49:58 +0100 | [diff] [blame] | 38 | void mtp_link_submit(struct mtp_link *link, struct msgb *msg) |
Holger Hans Peter Freyther | c5d897e | 2011-01-21 20:54:55 +0100 | [diff] [blame] | 39 | { |
Holger Hans Peter Freyther | 4c1eb0e | 2011-01-22 15:52:07 +0100 | [diff] [blame] | 40 | rate_ctr_inc(&link->ctrg->ctr[MTP_LNK_OUT]); |
Holger Hans Peter Freyther | c5d897e | 2011-01-21 20:54:55 +0100 | [diff] [blame] | 41 | rate_ctr_inc(&link->set->ctrg->ctr[MTP_LSET_TOTA_OUT_MSG]); |
| 42 | link->write(link, msg); |
| 43 | } |
| 44 | |
| 45 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 46 | struct msgb *mtp_msg_alloc(struct mtp_link_set *set) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 47 | { |
| 48 | struct mtp_level_3_hdr *hdr; |
| 49 | struct msgb *msg = msgb_alloc_headroom(4096, 128, "mtp-msg"); |
| 50 | if (!msg) { |
| 51 | LOGP(DINP, LOGL_ERROR, "Failed to allocate mtp msg\n"); |
| 52 | return NULL; |
| 53 | } |
| 54 | |
| 55 | msg->l2h = msgb_put(msg, sizeof(*hdr)); |
| 56 | hdr = (struct mtp_level_3_hdr *) msg->l2h; |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 57 | hdr->addr = MTP_ADDR(0x0, set->dpc, set->opc); |
| 58 | hdr->ni = set->ni; |
| 59 | hdr->spare = set->spare; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 60 | return msg; |
| 61 | } |
| 62 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 63 | static struct msgb *mtp_create_slta(struct mtp_link_set *set, int sls, |
Holger Hans Peter Freyther | 050577a | 2011-01-20 19:28:15 +0100 | [diff] [blame] | 64 | struct mtp_level_3_mng *in_mng, int l3_len) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 65 | { |
| 66 | struct mtp_level_3_hdr *hdr; |
| 67 | struct mtp_level_3_mng *mng; |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 68 | struct msgb *out = mtp_msg_alloc(set); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 69 | |
| 70 | if (!out) |
| 71 | return NULL; |
| 72 | |
| 73 | hdr = (struct mtp_level_3_hdr *) out->l2h; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 74 | hdr->ser_ind = MTP_SI_MNT_REG_MSG; |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 75 | hdr->addr = MTP_ADDR(sls, set->dpc, set->opc); |
Holger Hans Peter Freyther | 050577a | 2011-01-20 19:28:15 +0100 | [diff] [blame] | 76 | |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 77 | mng = (struct mtp_level_3_mng *) msgb_put(out, sizeof(*mng)); |
| 78 | mng->cmn.h0 = MTP_TST_MSG_GRP; |
| 79 | mng->cmn.h1 = MTP_TST_MSG_SLTA; |
| 80 | mng->length = l3_len - 2; |
| 81 | msgb_put(out, mng->length); |
| 82 | memcpy(mng->data, in_mng->data, mng->length); |
| 83 | |
| 84 | return out; |
| 85 | } |
| 86 | |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 87 | |
Holger Hans Peter Freyther | fd5d8d2 | 2011-01-25 13:35:10 +0100 | [diff] [blame] | 88 | static struct msgb *mtp_base_alloc(struct mtp_link *link, int msg, int apoc) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 89 | { |
| 90 | struct mtp_level_3_hdr *hdr; |
| 91 | struct mtp_level_3_prohib *prb; |
Holger Hans Peter Freyther | fd5d8d2 | 2011-01-25 13:35:10 +0100 | [diff] [blame] | 92 | struct msgb *out = mtp_msg_alloc(link->set); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 93 | |
| 94 | if (!out) |
| 95 | return NULL; |
| 96 | |
| 97 | hdr = (struct mtp_level_3_hdr *) out->l2h; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 98 | hdr->ser_ind = MTP_SI_MNT_SNM_MSG; |
Holger Hans Peter Freyther | fd5d8d2 | 2011-01-25 13:35:10 +0100 | [diff] [blame] | 99 | hdr->addr = MTP_ADDR(link->first_sls, link->set->dpc, link->set->opc); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 100 | prb = (struct mtp_level_3_prohib *) msgb_put(out, sizeof(*prb)); |
| 101 | prb->cmn.h0 = MTP_PROHIBIT_MSG_GRP; |
Holger Hans Peter Freyther | cfbe80f | 2011-01-18 20:35:11 +0100 | [diff] [blame] | 102 | prb->cmn.h1 = msg; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 103 | prb->apoc = MTP_MAKE_APOC(apoc); |
| 104 | return out; |
| 105 | } |
| 106 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 107 | static struct msgb *mtp_tfp_alloc(struct mtp_link *link, int apoc) |
Holger Hans Peter Freyther | cfbe80f | 2011-01-18 20:35:11 +0100 | [diff] [blame] | 108 | { |
Holger Hans Peter Freyther | fd5d8d2 | 2011-01-25 13:35:10 +0100 | [diff] [blame] | 109 | return mtp_base_alloc(link, MTP_PROHIBIT_MSG_SIG, apoc); |
Holger Hans Peter Freyther | cfbe80f | 2011-01-18 20:35:11 +0100 | [diff] [blame] | 110 | } |
| 111 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 112 | static struct msgb *mtp_tfa_alloc(struct mtp_link *link, int apoc) |
Holger Hans Peter Freyther | cfbe80f | 2011-01-18 20:35:11 +0100 | [diff] [blame] | 113 | { |
Holger Hans Peter Freyther | fd5d8d2 | 2011-01-25 13:35:10 +0100 | [diff] [blame] | 114 | return mtp_base_alloc(link, MTP_PROHIBIT_MSG_TFA, apoc); |
Holger Hans Peter Freyther | cfbe80f | 2011-01-18 20:35:11 +0100 | [diff] [blame] | 115 | } |
| 116 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 117 | static struct msgb *mtp_tra_alloc(struct mtp_link *link, int opc) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 118 | { |
| 119 | struct mtp_level_3_hdr *hdr; |
| 120 | struct mtp_level_3_cmn *cmn; |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 121 | struct msgb *out = mtp_msg_alloc(link->set); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 122 | |
| 123 | if (!out) |
| 124 | return NULL; |
| 125 | |
| 126 | hdr = (struct mtp_level_3_hdr *) out->l2h; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 127 | hdr->ser_ind = MTP_SI_MNT_SNM_MSG; |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 128 | hdr->addr = MTP_ADDR(0x0, link->set->dpc, opc); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 129 | cmn = (struct mtp_level_3_cmn *) msgb_put(out, sizeof(*cmn)); |
| 130 | cmn->h0 = MTP_TRF_RESTR_MSG_GRP; |
| 131 | cmn->h1 = MTP_RESTR_MSG_ALLWED; |
| 132 | return out; |
| 133 | } |
| 134 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 135 | static struct msgb *mtp_sccp_alloc_scmg(struct mtp_link_set *set, |
Holger Hans Peter Freyther | 101cd0b | 2011-01-19 10:51:44 +0100 | [diff] [blame] | 136 | int type, int assn, int apoc, int sls) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 137 | { |
| 138 | struct sccp_data_unitdata *udt; |
| 139 | struct sccp_con_ctrl_prt_mgt *prt; |
| 140 | struct mtp_level_3_hdr *hdr; |
Holger Hans Peter Freyther | 5aa1701 | 2010-07-31 04:37:26 +0800 | [diff] [blame] | 141 | uint8_t *data; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 142 | |
| 143 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 144 | struct msgb *out = mtp_msg_alloc(set); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 145 | |
| 146 | if (!out) |
| 147 | return NULL; |
| 148 | |
| 149 | hdr = (struct mtp_level_3_hdr *) out->l2h; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 150 | hdr->ser_ind = MTP_SI_MNT_SCCP; |
| 151 | |
| 152 | /* this appears to be round robin or such.. */ |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 153 | hdr->addr = MTP_ADDR(sls % 16, set->dpc, set->sccp_opc); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 154 | |
| 155 | /* generate the UDT message... libsccp does not offer formating yet */ |
| 156 | udt = (struct sccp_data_unitdata *) msgb_put(out, sizeof(*udt)); |
| 157 | udt->type = SCCP_MSG_TYPE_UDT; |
| 158 | udt->proto_class = SCCP_PROTOCOL_CLASS_0; |
| 159 | udt->variable_called = 3; |
| 160 | udt->variable_calling = 5; |
| 161 | udt->variable_data = 7; |
| 162 | |
| 163 | /* put the called and calling address. It is LV */ |
| 164 | data = msgb_put(out, 2 + 1); |
| 165 | data[0] = 2; |
| 166 | data[1] = 0x42; |
| 167 | data[2] = 0x1; |
| 168 | |
| 169 | data = msgb_put(out, 2 + 1); |
| 170 | data[0] = 2; |
| 171 | data[1] = 0x42; |
| 172 | data[2] = 0x1; |
| 173 | |
| 174 | data = msgb_put(out, 1); |
| 175 | data[0] = sizeof(*prt); |
| 176 | |
| 177 | prt = (struct sccp_con_ctrl_prt_mgt *) msgb_put(out, sizeof(*prt)); |
Holger Hans Peter Freyther | 80ab4c6 | 2010-12-31 13:40:19 +0100 | [diff] [blame] | 178 | prt->sst = type; |
| 179 | prt->assn = assn; |
Holger Hans Peter Freyther | 101cd0b | 2011-01-19 10:51:44 +0100 | [diff] [blame] | 180 | prt->apoc = apoc; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 181 | prt->mul_ind = 0; |
| 182 | |
| 183 | return out; |
| 184 | } |
| 185 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 186 | void mtp_link_set_stop(struct mtp_link_set *set) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 187 | { |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 188 | struct mtp_link *lnk; |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 189 | llist_for_each_entry(lnk, &set->links, entry) |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 190 | mtp_link_stop_link_test(lnk); |
| 191 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 192 | bsc_del_timer(&set->T18); |
| 193 | bsc_del_timer(&set->T20); |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 194 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 195 | set->sccp_up = 0; |
| 196 | set->running = 0; |
| 197 | set->linkset_up = 0; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 198 | } |
| 199 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 200 | void mtp_link_set_reset(struct mtp_link_set *set) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 201 | { |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 202 | struct mtp_link *lnk; |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 203 | mtp_link_set_stop(set); |
| 204 | set->running = 1; |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 205 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 206 | llist_for_each_entry(lnk, &set->links, entry) |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 207 | mtp_link_start_link_test(lnk); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 208 | } |
| 209 | |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 210 | /* unused right now but we want to use it again */ |
| 211 | int send_tfp(struct mtp_link *link, int apoc) |
Holger Hans Peter Freyther | 27c5e23 | 2011-01-18 18:52:34 +0100 | [diff] [blame] | 212 | { |
| 213 | struct msgb *msg; |
| 214 | msg = mtp_tfp_alloc(link, apoc); |
| 215 | if (!msg) |
| 216 | return -1; |
| 217 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 218 | mtp_link_submit(link, msg); |
Holger Hans Peter Freyther | 27c5e23 | 2011-01-18 18:52:34 +0100 | [diff] [blame] | 219 | return 0; |
| 220 | } |
| 221 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 222 | static int send_tra(struct mtp_link *link, int opc) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 223 | { |
| 224 | struct msgb *msg; |
Holger Hans Peter Freyther | adf7692 | 2011-01-18 19:01:43 +0100 | [diff] [blame] | 225 | msg = mtp_tra_alloc(link, opc); |
| 226 | if (!msg) |
| 227 | return -1; |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 228 | mtp_link_submit(link, msg); |
Holger Hans Peter Freyther | adf7692 | 2011-01-18 19:01:43 +0100 | [diff] [blame] | 229 | return 0; |
| 230 | } |
| 231 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 232 | static int send_tfa(struct mtp_link *link, int opc) |
Holger Hans Peter Freyther | cfbe80f | 2011-01-18 20:35:11 +0100 | [diff] [blame] | 233 | { |
| 234 | struct msgb *msg; |
| 235 | msg = mtp_tfa_alloc(link, opc); |
| 236 | if (!msg) |
| 237 | return -1; |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 238 | mtp_link_submit(link, msg); |
Holger Hans Peter Freyther | cfbe80f | 2011-01-18 20:35:11 +0100 | [diff] [blame] | 239 | return 0; |
| 240 | } |
| 241 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 242 | static int linkset_up(struct mtp_link *link) |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 243 | { |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 244 | struct mtp_link_set *set = link->set; |
| 245 | |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 246 | /* the link set is already up */ |
| 247 | if (set->linkset_up) |
| 248 | return 0; |
| 249 | |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 250 | set->linkset_up = 1; |
| 251 | bsc_schedule_timer(&set->T18, set->timeout_t18, 0); |
| 252 | bsc_schedule_timer(&set->T20, set->timeout_t20, 0); |
| 253 | |
| 254 | /* More the functionality of a SSP here... */ |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 255 | if (set->sccp_opc != set->opc && |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 256 | send_tfa(link, set->sccp_opc) != 0) { |
| 257 | LOGP(DINP, LOGL_ERROR, |
| 258 | "Failed to send TFA for OPC %d on linkset %d.\n", set->sccp_opc, set->nr); |
| 259 | } |
| 260 | |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 261 | if (set->isup_opc != set->opc && |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 262 | send_tfa(link, set->isup_opc) != 0) { |
| 263 | LOGP(DINP, LOGL_ERROR, |
| 264 | "Failed to send TFA for OPC %d on linkset %d.\n", set->sccp_opc, set->nr); |
| 265 | } |
| 266 | |
| 267 | return 0; |
| 268 | } |
| 269 | |
| 270 | static void linkset_t18_cb(void *_set) |
| 271 | { |
| 272 | struct mtp_link_set *set = _set; |
| 273 | struct mtp_link *link = set->slc[0]; |
| 274 | |
| 275 | if (!link) { |
| 276 | LOGP(DINP, LOGL_ERROR, |
| 277 | "Linkset restart but no link available on linkset %d\n", set->nr); |
| 278 | bsc_del_timer(&set->T20); |
| 279 | set->linkset_up = 0; |
| 280 | return; |
| 281 | } |
| 282 | |
| 283 | /* TODO: now send out routing states */ |
| 284 | LOGP(DINP, LOGL_NOTICE, "The linkset %d has collected routing data.\n", set->nr); |
| 285 | } |
| 286 | |
| 287 | static void linkset_t20_cb(void *_set) |
| 288 | { |
| 289 | struct mtp_link_set *set = _set; |
| 290 | struct mtp_link *link = set->slc[0]; |
| 291 | |
| 292 | if (!link) { |
| 293 | LOGP(DINP, LOGL_ERROR, |
| 294 | "Linkset restart but no link available on linkset %d\n", set->nr); |
| 295 | bsc_del_timer(&set->T20); |
| 296 | set->linkset_up = 0; |
| 297 | return; |
| 298 | } |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 299 | |
| 300 | /* Send the TRA for all PCs */ |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 301 | if (send_tra(link, set->opc) != 0) |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 302 | return; |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 303 | |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 304 | LOGP(DINP, LOGL_NOTICE, |
Holger Hans Peter Freyther | 5e5758c | 2011-02-17 18:18:22 +0100 | [diff] [blame] | 305 | "The linkset %d/%s is considered running.\n", set->nr, set->name); |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 306 | return; |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 307 | } |
| 308 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 309 | static int mtp_link_sign_msg(struct mtp_link_set *set, struct mtp_level_3_hdr *hdr, int l3_len) |
Holger Hans Peter Freyther | adf7692 | 2011-01-18 19:01:43 +0100 | [diff] [blame] | 310 | { |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 311 | struct mtp_level_3_cmn *cmn; |
Holger Hans Peter Freyther | ae74181 | 2010-12-08 11:28:12 +0100 | [diff] [blame] | 312 | uint16_t *apc; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 313 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 314 | if (hdr->ni != set->ni || l3_len < 1) { |
Holger Hans Peter Freyther | dedb7ce | 2010-10-08 17:49:24 +0800 | [diff] [blame] | 315 | LOGP(DINP, LOGL_ERROR, "Unhandled data (ni: %d len: %d)\n", |
| 316 | hdr->ni, l3_len); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 317 | return -1; |
| 318 | } |
| 319 | |
| 320 | cmn = (struct mtp_level_3_cmn *) &hdr->data[0]; |
| 321 | LOGP(DINP, LOGL_DEBUG, "reg msg: h0: 0x%x h1: 0x%x\n", |
| 322 | cmn->h0, cmn->h1); |
| 323 | |
| 324 | switch (cmn->h0) { |
| 325 | case MTP_TRF_RESTR_MSG_GRP: |
| 326 | switch (cmn->h1) { |
| 327 | case MTP_RESTR_MSG_ALLWED: |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 328 | LOGP(DINP, LOGL_INFO, |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 329 | "Received TRA on linkset %d/%s.\n", set->nr, set->name); |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 330 | /* |
| 331 | * TODO: routing should be done on a higher level. This should not |
| 332 | * arrive after we expired the timer but we are friendly here and |
| 333 | * respond with a TFA and TRA... |
| 334 | */ |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 335 | bsc_del_timer(&set->T18); |
| 336 | bsc_del_timer(&set->T20); |
| 337 | linkset_t18_cb(set); |
| 338 | linkset_t20_cb(set); |
| 339 | set->sccp_up = 1; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 340 | return 0; |
| 341 | break; |
| 342 | } |
| 343 | break; |
Holger Hans Peter Freyther | ae74181 | 2010-12-08 11:28:12 +0100 | [diff] [blame] | 344 | case MTP_PROHIBIT_MSG_GRP: |
| 345 | switch (cmn->h1) { |
| 346 | case MTP_PROHIBIT_MSG_SIG: |
| 347 | if (l3_len < 3) { |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 348 | LOGP(DINP, LOGL_ERROR, "TFP is too short on %d/%s.\n", set->nr, set->name); |
Holger Hans Peter Freyther | ae74181 | 2010-12-08 11:28:12 +0100 | [diff] [blame] | 349 | return -1; |
| 350 | } |
| 351 | |
| 352 | apc = (uint16_t *) &hdr->data[1]; |
| 353 | LOGP(DINP, LOGL_INFO, |
Holger Hans Peter Freyther | 5e5758c | 2011-02-17 18:18:22 +0100 | [diff] [blame] | 354 | "TFP for the affected point code %d on %d/%s\n", |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 355 | *apc, set->nr, set->name); |
Holger Hans Peter Freyther | ae74181 | 2010-12-08 11:28:12 +0100 | [diff] [blame] | 356 | return 0; |
| 357 | break; |
| 358 | } |
| 359 | break; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 360 | } |
| 361 | |
Holger Hans Peter Freyther | 5e5758c | 2011-02-17 18:18:22 +0100 | [diff] [blame] | 362 | LOGP(DINP, LOGL_ERROR, "Unknown message:%d/%d %s on %d/%s.\n", |
| 363 | cmn->h0, cmn->h1, hexdump(&hdr->data[0], l3_len), |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 364 | set->nr, set->name); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 365 | return -1; |
| 366 | } |
| 367 | |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 368 | static int mtp_link_regular_msg(struct mtp_link *link, struct mtp_level_3_hdr *hdr, int l3_len) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 369 | { |
| 370 | struct msgb *out; |
| 371 | struct mtp_level_3_mng *mng; |
| 372 | |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 373 | if (hdr->ni != link->set->ni || l3_len < 1) { |
Holger Hans Peter Freyther | dedb7ce | 2010-10-08 17:49:24 +0800 | [diff] [blame] | 374 | LOGP(DINP, LOGL_ERROR, "Unhandled data (ni: %d len: %d)\n", |
| 375 | hdr->ni, l3_len); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 376 | return -1; |
| 377 | } |
| 378 | |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 379 | if (MTP_ADDR_DPC(hdr->addr) != link->set->opc) { |
Holger Hans Peter Freyther | 5e5758c | 2011-02-17 18:18:22 +0100 | [diff] [blame] | 380 | LOGP(DINP, LOGL_ERROR, "MSG for OPC %d not handled on %d/%s\n", |
| 381 | MTP_ADDR_DPC(hdr->addr), link->set->nr, link->set->name); |
Holger Hans Peter Freyther | 157de2a | 2011-01-20 13:05:54 +0100 | [diff] [blame] | 382 | return -1; |
| 383 | } |
| 384 | |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 385 | mng = (struct mtp_level_3_mng *) &hdr->data[0]; |
| 386 | LOGP(DINP, LOGL_DEBUG, "reg msg: h0: 0x%x h1: 0x%x\n", |
| 387 | mng->cmn.h0, mng->cmn.h1); |
| 388 | |
| 389 | switch (mng->cmn.h0) { |
| 390 | case MTP_TST_MSG_GRP: |
| 391 | switch (mng->cmn.h1) { |
| 392 | case MTP_TST_MSG_SLTM: |
| 393 | /* simply respond to the request... */ |
Holger Hans Peter Freyther | 050577a | 2011-01-20 19:28:15 +0100 | [diff] [blame] | 394 | out = mtp_create_slta(link->set, |
| 395 | MTP_LINK_SLS(hdr->addr), |
| 396 | mng, l3_len); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 397 | if (!out) |
| 398 | return -1; |
Holger Hans Peter Freyther | 9543f4a | 2011-01-24 20:49:58 +0100 | [diff] [blame] | 399 | mtp_link_submit(link, out); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 400 | return 0; |
| 401 | break; |
| 402 | case MTP_TST_MSG_SLTA: |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 403 | /* If this link is proven set it up */ |
| 404 | if (mtp_link_slta(link, l3_len, mng) == 0) |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 405 | linkset_up(link); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 406 | break; |
| 407 | } |
| 408 | break; |
| 409 | } |
| 410 | |
| 411 | return -1; |
| 412 | } |
| 413 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 414 | static int mtp_link_sccp_data(struct mtp_link_set *set, struct mtp_level_3_hdr *hdr, struct msgb *msg, int l3_len) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 415 | { |
| 416 | struct msgb *out; |
| 417 | struct sccp_con_ctrl_prt_mgt *prt; |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 418 | struct sccp_parse_result sccp; |
Holger Hans Peter Freyther | 80ab4c6 | 2010-12-31 13:40:19 +0100 | [diff] [blame] | 419 | int type; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 420 | |
| 421 | msg->l2h = &hdr->data[0]; |
| 422 | if (msgb_l2len(msg) != l3_len) { |
| 423 | LOGP(DINP, LOGL_ERROR, "Size is wrong after playing with the l2h header.\n"); |
| 424 | return -1; |
| 425 | } |
| 426 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 427 | if (!set->sccp_up) { |
Holger Hans Peter Freyther | 5e5758c | 2011-02-17 18:18:22 +0100 | [diff] [blame] | 428 | LOGP(DINP, LOGL_ERROR, "SCCP traffic is not allowed on %d/%s\n", |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 429 | set->nr, set->name); |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 430 | return -1; |
| 431 | } |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 432 | |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 433 | memset(&sccp, 0, sizeof(sccp)); |
| 434 | if (sccp_parse_header(msg, &sccp) != 0) { |
| 435 | LOGP(DINP, LOGL_ERROR, "Failed to parsed SCCP header.\n"); |
| 436 | return -1; |
| 437 | } |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 438 | |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 439 | /* check if it is a SST */ |
| 440 | if (sccp_determine_msg_type(msg) == SCCP_MSG_TYPE_UDT |
| 441 | && msg->l3h[0] == SCCP_SST) { |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 442 | if (msgb_l3len(msg) != 5) { |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 443 | LOGP(DINP, LOGL_ERROR, |
| 444 | "SCCP UDT msg of unexpected size: %u\n", |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 445 | msgb_l3len(msg)); |
| 446 | return -1; |
| 447 | } |
| 448 | |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 449 | prt = (struct sccp_con_ctrl_prt_mgt *) &msg->l3h[0]; |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 450 | if (prt->apoc != MTP_MAKE_APOC(set->sccp_opc)) { |
Holger Hans Peter Freyther | 5e5758c | 2011-02-17 18:18:22 +0100 | [diff] [blame] | 451 | LOGP(DINP, LOGL_ERROR, "Unknown APOC: %u/%u on %d/%s\n", |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 452 | ntohs(prt->apoc), prt->apoc, set->nr, set->name); |
Holger Hans Peter Freyther | 0945961 | 2010-12-31 16:53:40 +0100 | [diff] [blame] | 453 | type = SCCP_SSP; |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 454 | } else if (!set->supported_ssn[prt->assn]) { |
Holger Hans Peter Freyther | 5e5758c | 2011-02-17 18:18:22 +0100 | [diff] [blame] | 455 | LOGP(DINP, LOGL_ERROR, "Unknown affected SSN assn: %u on %d/%s\n", |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 456 | prt->assn, set->nr, set->name); |
Holger Hans Peter Freyther | 80ab4c6 | 2010-12-31 13:40:19 +0100 | [diff] [blame] | 457 | type = SCCP_SSP; |
| 458 | } else { |
| 459 | type = SCCP_SSA; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 460 | } |
| 461 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 462 | out = mtp_sccp_alloc_scmg(set, type, prt->assn, prt->apoc, |
Holger Hans Peter Freyther | 80ab4c6 | 2010-12-31 13:40:19 +0100 | [diff] [blame] | 463 | MTP_LINK_SLS(hdr->addr)); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 464 | if (!out) |
| 465 | return -1; |
| 466 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 467 | mtp_link_submit(set->slc[MTP_LINK_SLS(hdr->addr)], out); |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 468 | return 0; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 469 | } |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 470 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 471 | rate_ctr_inc(&set->ctrg->ctr[MTP_LSET_SCCP_IN_MSG]); |
| 472 | mtp_link_set_forward_sccp(set, msg, MTP_LINK_SLS(hdr->addr)); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 473 | return 0; |
| 474 | } |
| 475 | |
Holger Hans Peter Freyther | bee2ed1 | 2011-01-18 13:29:42 +0100 | [diff] [blame] | 476 | int mtp_link_set_data(struct mtp_link *link, struct msgb *msg) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 477 | { |
| 478 | int rc = -1; |
| 479 | struct mtp_level_3_hdr *hdr; |
| 480 | int l3_len; |
| 481 | |
| 482 | if (!msg->l2h || msgb_l2len(msg) < sizeof(*hdr)) |
| 483 | return -1; |
| 484 | |
Holger Hans Peter Freyther | 2d845fc | 2011-01-20 15:42:13 +0100 | [diff] [blame] | 485 | if (!link->set->running) { |
Holger Hans Peter Freyther | 5a34c7f | 2011-02-17 03:23:42 +0100 | [diff] [blame] | 486 | LOGP(DINP, LOGL_ERROR, |
Holger Hans Peter Freyther | 5e5758c | 2011-02-17 18:18:22 +0100 | [diff] [blame] | 487 | "Link %d/%s of %d/%s is not running. Call mtp_link_reset first.\n", |
Holger Hans Peter Freyther | 5a34c7f | 2011-02-17 03:23:42 +0100 | [diff] [blame] | 488 | link->nr, link->name, link->set->nr, link->set->name); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 489 | return -1; |
| 490 | } |
| 491 | |
| 492 | hdr = (struct mtp_level_3_hdr *) msg->l2h; |
| 493 | l3_len = msgb_l2len(msg) - sizeof(*hdr); |
| 494 | |
Holger Hans Peter Freyther | 326a1f7 | 2011-01-24 20:52:30 +0100 | [diff] [blame] | 495 | rate_ctr_inc(&link->ctrg->ctr[MTP_LNK_IN]); |
Holger Hans Peter Freyther | c5d897e | 2011-01-21 20:54:55 +0100 | [diff] [blame] | 496 | rate_ctr_inc(&link->set->ctrg->ctr[MTP_LSET_TOTA_IN_MSG]); |
| 497 | |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 498 | switch (hdr->ser_ind) { |
| 499 | case MTP_SI_MNT_SNM_MSG: |
Holger Hans Peter Freyther | 2d845fc | 2011-01-20 15:42:13 +0100 | [diff] [blame] | 500 | rc = mtp_link_sign_msg(link->set, hdr, l3_len); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 501 | break; |
| 502 | case MTP_SI_MNT_REG_MSG: |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 503 | rc = mtp_link_regular_msg(link, hdr, l3_len); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 504 | break; |
| 505 | case MTP_SI_MNT_SCCP: |
Holger Hans Peter Freyther | 2d845fc | 2011-01-20 15:42:13 +0100 | [diff] [blame] | 506 | rc = mtp_link_sccp_data(link->set, hdr, msg, l3_len); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 507 | break; |
Holger Hans Peter Freyther | 3a80cb2 | 2010-12-08 11:12:46 +0100 | [diff] [blame] | 508 | case MTP_SI_MNT_ISUP: |
Holger Hans Peter Freyther | 433ea2f | 2010-12-10 07:34:01 +0100 | [diff] [blame] | 509 | msg->l3h = &hdr->data[0]; |
Holger Hans Peter Freyther | c5d897e | 2011-01-21 20:54:55 +0100 | [diff] [blame] | 510 | rate_ctr_inc(&link->set->ctrg->ctr[MTP_LSET_IUSP_IN_MSG]); |
Holger Hans Peter Freyther | 2d845fc | 2011-01-20 15:42:13 +0100 | [diff] [blame] | 511 | rc = mtp_link_set_isup(link->set, msg, MTP_LINK_SLS(hdr->addr)); |
Holger Hans Peter Freyther | 3a80cb2 | 2010-12-08 11:12:46 +0100 | [diff] [blame] | 512 | break; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 513 | default: |
| 514 | fprintf(stderr, "Unhandled: %u\n", hdr->ser_ind); |
| 515 | break; |
| 516 | } |
| 517 | |
| 518 | return rc; |
| 519 | } |
| 520 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 521 | int mtp_link_set_submit_sccp_data(struct mtp_link_set *set, int sls, const uint8_t *data, unsigned int length) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 522 | { |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 523 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 524 | if (!set->sccp_up) { |
Holger Hans Peter Freyther | 5e5758c | 2011-02-17 18:18:22 +0100 | [diff] [blame] | 525 | LOGP(DINP, LOGL_ERROR, "SCCP msg after TRA and before SSA. Dropping it on %d/%s\n", |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 526 | set->nr, set->name); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 527 | return -1; |
| 528 | } |
| 529 | |
Holger Hans Peter Freyther | 346e1c4 | 2011-01-02 18:11:37 +0100 | [diff] [blame] | 530 | if (sls == -1) { |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 531 | sls = set->last_sls; |
| 532 | set->last_sls = (set->last_sls + 1) % 16; |
Holger Hans Peter Freyther | 346e1c4 | 2011-01-02 18:11:37 +0100 | [diff] [blame] | 533 | } |
| 534 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 535 | rate_ctr_inc(&set->ctrg->ctr[MTP_LSET_SCCP_OUT_MSG]); |
| 536 | return mtp_int_submit(set, set->sccp_opc, sls, MTP_SI_MNT_SCCP, data, length); |
Holger Hans Peter Freyther | 3aad776 | 2010-12-10 12:18:57 +0100 | [diff] [blame] | 537 | } |
| 538 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 539 | int mtp_link_set_submit_isup_data(struct mtp_link_set *set, int sls, |
Holger Hans Peter Freyther | 3aad776 | 2010-12-10 12:18:57 +0100 | [diff] [blame] | 540 | const uint8_t *data, unsigned int length) |
| 541 | { |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 542 | rate_ctr_inc(&set->ctrg->ctr[MTP_LSET_ISUP_OUT_MSG]); |
| 543 | return mtp_int_submit(set, set->isup_opc, sls, MTP_SI_MNT_ISUP, data, length); |
Holger Hans Peter Freyther | 3aad776 | 2010-12-10 12:18:57 +0100 | [diff] [blame] | 544 | } |
| 545 | |
Holger Hans Peter Freyther | 0452f22 | 2011-02-03 13:35:42 +0100 | [diff] [blame] | 546 | int mtp_link_set_send(struct mtp_link_set *set, struct msgb *msg) |
| 547 | { |
| 548 | int sls; |
| 549 | struct mtp_level_3_hdr *hdr; |
| 550 | |
| 551 | if (msgb_l2len(msg) < sizeof(*hdr)) |
| 552 | return -1; |
| 553 | |
| 554 | hdr = (struct mtp_level_3_hdr *) msg->l2h; |
| 555 | sls = MTP_LINK_SLS(hdr->addr); |
| 556 | if (!set->slc[sls]) |
| 557 | return -2; |
| 558 | |
| 559 | mtp_link_submit(set->slc[sls], msg); |
| 560 | return 0; |
| 561 | } |
| 562 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 563 | static int mtp_int_submit(struct mtp_link_set *set, int pc, int sls, int type, |
Holger Hans Peter Freyther | 3aad776 | 2010-12-10 12:18:57 +0100 | [diff] [blame] | 564 | const uint8_t *data, unsigned int length) |
| 565 | { |
| 566 | uint8_t *put_ptr; |
| 567 | struct mtp_level_3_hdr *hdr; |
| 568 | struct msgb *msg; |
| 569 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 570 | if (!set->slc[sls % 16]) |
Holger Hans Peter Freyther | 92affda | 2011-01-17 20:12:32 +0100 | [diff] [blame] | 571 | return -1; |
| 572 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 573 | msg = mtp_msg_alloc(set); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 574 | if (!msg) |
| 575 | return -1; |
| 576 | |
| 577 | hdr = (struct mtp_level_3_hdr *) msg->l2h; |
Holger Hans Peter Freyther | 3aad776 | 2010-12-10 12:18:57 +0100 | [diff] [blame] | 578 | hdr->ser_ind = type; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 579 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 580 | hdr->addr = MTP_ADDR(sls % 16, set->dpc, pc); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 581 | |
| 582 | /* copy the raw sccp data */ |
| 583 | put_ptr = msgb_put(msg, length); |
| 584 | memcpy(put_ptr, data, length); |
| 585 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 586 | mtp_link_submit(set->slc[sls % 16], msg); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 587 | return 0; |
| 588 | } |
Holger Hans Peter Freyther | 069e635 | 2011-01-04 13:01:23 +0100 | [diff] [blame] | 589 | |
Holger Hans Peter Freyther | 0e2f911 | 2011-01-17 11:54:39 +0100 | [diff] [blame] | 590 | static struct mtp_link *find_next_link(struct mtp_link_set *set, |
| 591 | struct mtp_link *data) |
Holger Hans Peter Freyther | d91f940 | 2011-01-16 11:56:05 +0100 | [diff] [blame] | 592 | { |
| 593 | int found = 0; |
Holger Hans Peter Freyther | 0e2f911 | 2011-01-17 11:54:39 +0100 | [diff] [blame] | 594 | struct mtp_link *next; |
Holger Hans Peter Freyther | d91f940 | 2011-01-16 11:56:05 +0100 | [diff] [blame] | 595 | |
| 596 | if (llist_empty(&set->links)) |
| 597 | return NULL; |
| 598 | |
| 599 | if (data == NULL) |
| 600 | found = 1; |
| 601 | |
| 602 | /* try to find the next one */ |
| 603 | llist_for_each_entry(next, &set->links, entry) { |
| 604 | if (found && next->available) |
| 605 | return next; |
| 606 | if (next == data) |
| 607 | found = 1; |
| 608 | } |
| 609 | |
| 610 | /* try to find any one */ |
| 611 | llist_for_each_entry(next, &set->links, entry) |
| 612 | if (next->available) |
| 613 | return next; |
| 614 | |
| 615 | return NULL; |
| 616 | } |
| 617 | |
Holger Hans Peter Freyther | 069e635 | 2011-01-04 13:01:23 +0100 | [diff] [blame] | 618 | void mtp_link_set_init_slc(struct mtp_link_set *set) |
| 619 | { |
Holger Hans Peter Freyther | 1ec2a74 | 2011-01-25 13:24:06 +0100 | [diff] [blame] | 620 | struct mtp_link *link = NULL, *tmp; |
Holger Hans Peter Freyther | 069e635 | 2011-01-04 13:01:23 +0100 | [diff] [blame] | 621 | int i; |
Holger Hans Peter Freyther | d91f940 | 2011-01-16 11:56:05 +0100 | [diff] [blame] | 622 | |
Holger Hans Peter Freyther | 1ec2a74 | 2011-01-25 13:24:06 +0100 | [diff] [blame] | 623 | llist_for_each_entry(tmp, &set->links, entry) |
| 624 | tmp->first_sls = 100; |
| 625 | |
Holger Hans Peter Freyther | d91f940 | 2011-01-16 11:56:05 +0100 | [diff] [blame] | 626 | |
| 627 | for (i = 0; i < ARRAY_SIZE(set->slc); ++i) { |
| 628 | link = find_next_link(set, link); |
| 629 | set->slc[i] = link; |
Holger Hans Peter Freyther | 1ec2a74 | 2011-01-25 13:24:06 +0100 | [diff] [blame] | 630 | |
| 631 | if (link && i < link->first_sls) |
| 632 | link->first_sls = i; |
Holger Hans Peter Freyther | d91f940 | 2011-01-16 11:56:05 +0100 | [diff] [blame] | 633 | } |
Holger Hans Peter Freyther | fe72c16 | 2011-01-04 13:21:52 +0100 | [diff] [blame] | 634 | } |
| 635 | |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 636 | struct mtp_link_set *mtp_link_set_alloc(struct bsc_data *bsc) |
| 637 | { |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 638 | struct mtp_link_set *set; |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 639 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 640 | set = talloc_zero(bsc, struct mtp_link_set); |
| 641 | if (!set) |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 642 | return NULL; |
| 643 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 644 | set->ctrg = rate_ctr_group_alloc(set, |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 645 | mtp_link_set_rate_ctr_desc(), |
| 646 | bsc->num_linksets + 1); |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 647 | if (!set->ctrg) { |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 648 | LOGP(DINP, LOGL_ERROR, "Failed to allocate counter.\n"); |
| 649 | return NULL; |
| 650 | } |
| 651 | |
| 652 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 653 | set->ni = MTP_NI_NATION_NET; |
| 654 | INIT_LLIST_HEAD(&set->links); |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 655 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 656 | set->nr = bsc->num_linksets++; |
| 657 | set->sccp_opc = set->isup_opc = -1; |
| 658 | set->pcap_fd = bsc->pcap_fd; |
| 659 | set->bsc = bsc; |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 660 | |
| 661 | /* timeout code */ |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 662 | set->timeout_t18 = 15; |
| 663 | set->timeout_t20 = 16; |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 664 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 665 | set->T18.cb = linkset_t18_cb; |
| 666 | set->T18.data = set; |
| 667 | set->T20.cb = linkset_t20_cb; |
| 668 | set->T20.data = set; |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 669 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 670 | llist_add_tail(&set->entry, &bsc->linksets); |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 671 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 672 | return set; |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 673 | } |
| 674 | |
| 675 | struct mtp_link_set *mtp_link_set_num(struct bsc_data *bsc, int num) |
| 676 | { |
| 677 | struct mtp_link_set *set; |
| 678 | |
| 679 | llist_for_each_entry(set, &bsc->linksets, entry) |
Holger Hans Peter Freyther | a33b23f | 2011-02-16 23:37:40 +0100 | [diff] [blame] | 680 | if (set->nr == num) |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 681 | return set; |
| 682 | |
| 683 | return NULL; |
| 684 | } |