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 | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 38 | struct msgb *mtp_msg_alloc(struct mtp_link_set *set) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 39 | { |
| 40 | struct mtp_level_3_hdr *hdr; |
| 41 | struct msgb *msg = msgb_alloc_headroom(4096, 128, "mtp-msg"); |
| 42 | if (!msg) { |
| 43 | LOGP(DINP, LOGL_ERROR, "Failed to allocate mtp msg\n"); |
| 44 | return NULL; |
| 45 | } |
| 46 | |
| 47 | msg->l2h = msgb_put(msg, sizeof(*hdr)); |
| 48 | hdr = (struct mtp_level_3_hdr *) msg->l2h; |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 49 | hdr->addr = MTP_ADDR(0x0, set->dpc, set->opc); |
| 50 | hdr->ni = set->ni; |
| 51 | hdr->spare = set->spare; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 52 | return msg; |
| 53 | } |
| 54 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 55 | 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] | 56 | struct mtp_level_3_mng *in_mng, int l3_len) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 57 | { |
| 58 | struct mtp_level_3_hdr *hdr; |
| 59 | struct mtp_level_3_mng *mng; |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 60 | struct msgb *out = mtp_msg_alloc(set); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 61 | |
| 62 | if (!out) |
| 63 | return NULL; |
| 64 | |
| 65 | hdr = (struct mtp_level_3_hdr *) out->l2h; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 66 | hdr->ser_ind = MTP_SI_MNT_REG_MSG; |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 67 | hdr->addr = MTP_ADDR(sls, set->dpc, set->opc); |
Holger Hans Peter Freyther | 050577a | 2011-01-20 19:28:15 +0100 | [diff] [blame] | 68 | |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 69 | mng = (struct mtp_level_3_mng *) msgb_put(out, sizeof(*mng)); |
| 70 | mng->cmn.h0 = MTP_TST_MSG_GRP; |
| 71 | mng->cmn.h1 = MTP_TST_MSG_SLTA; |
| 72 | mng->length = l3_len - 2; |
| 73 | msgb_put(out, mng->length); |
| 74 | memcpy(mng->data, in_mng->data, mng->length); |
| 75 | |
| 76 | return out; |
| 77 | } |
| 78 | |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 79 | |
Holger Hans Peter Freyther | fd5d8d2 | 2011-01-25 13:35:10 +0100 | [diff] [blame] | 80 | 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] | 81 | { |
| 82 | struct mtp_level_3_hdr *hdr; |
| 83 | struct mtp_level_3_prohib *prb; |
Holger Hans Peter Freyther | fd5d8d2 | 2011-01-25 13:35:10 +0100 | [diff] [blame] | 84 | struct msgb *out = mtp_msg_alloc(link->set); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 85 | |
| 86 | if (!out) |
| 87 | return NULL; |
| 88 | |
| 89 | hdr = (struct mtp_level_3_hdr *) out->l2h; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 90 | hdr->ser_ind = MTP_SI_MNT_SNM_MSG; |
Holger Hans Peter Freyther | fd5d8d2 | 2011-01-25 13:35:10 +0100 | [diff] [blame] | 91 | 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] | 92 | prb = (struct mtp_level_3_prohib *) msgb_put(out, sizeof(*prb)); |
| 93 | prb->cmn.h0 = MTP_PROHIBIT_MSG_GRP; |
Holger Hans Peter Freyther | cfbe80f | 2011-01-18 20:35:11 +0100 | [diff] [blame] | 94 | prb->cmn.h1 = msg; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 95 | prb->apoc = MTP_MAKE_APOC(apoc); |
| 96 | return out; |
| 97 | } |
| 98 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 99 | 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] | 100 | { |
Holger Hans Peter Freyther | fd5d8d2 | 2011-01-25 13:35:10 +0100 | [diff] [blame] | 101 | return mtp_base_alloc(link, MTP_PROHIBIT_MSG_SIG, apoc); |
Holger Hans Peter Freyther | cfbe80f | 2011-01-18 20:35:11 +0100 | [diff] [blame] | 102 | } |
| 103 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 104 | 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] | 105 | { |
Holger Hans Peter Freyther | fd5d8d2 | 2011-01-25 13:35:10 +0100 | [diff] [blame] | 106 | return mtp_base_alloc(link, MTP_PROHIBIT_MSG_TFA, apoc); |
Holger Hans Peter Freyther | cfbe80f | 2011-01-18 20:35:11 +0100 | [diff] [blame] | 107 | } |
| 108 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 109 | 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] | 110 | { |
| 111 | struct mtp_level_3_hdr *hdr; |
| 112 | struct mtp_level_3_cmn *cmn; |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 113 | struct msgb *out = mtp_msg_alloc(link->set); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 114 | |
| 115 | if (!out) |
| 116 | return NULL; |
| 117 | |
| 118 | hdr = (struct mtp_level_3_hdr *) out->l2h; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 119 | hdr->ser_ind = MTP_SI_MNT_SNM_MSG; |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 120 | hdr->addr = MTP_ADDR(0x0, link->set->dpc, opc); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 121 | cmn = (struct mtp_level_3_cmn *) msgb_put(out, sizeof(*cmn)); |
| 122 | cmn->h0 = MTP_TRF_RESTR_MSG_GRP; |
| 123 | cmn->h1 = MTP_RESTR_MSG_ALLWED; |
| 124 | return out; |
| 125 | } |
| 126 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 127 | 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] | 128 | int type, int assn, int apoc, int sls) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 129 | { |
| 130 | struct sccp_data_unitdata *udt; |
| 131 | struct sccp_con_ctrl_prt_mgt *prt; |
| 132 | struct mtp_level_3_hdr *hdr; |
Holger Hans Peter Freyther | 5aa1701 | 2010-07-31 04:37:26 +0800 | [diff] [blame] | 133 | uint8_t *data; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 134 | |
| 135 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 136 | struct msgb *out = mtp_msg_alloc(set); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 137 | |
| 138 | if (!out) |
| 139 | return NULL; |
| 140 | |
| 141 | hdr = (struct mtp_level_3_hdr *) out->l2h; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 142 | hdr->ser_ind = MTP_SI_MNT_SCCP; |
| 143 | |
| 144 | /* this appears to be round robin or such.. */ |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 145 | 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] | 146 | |
| 147 | /* generate the UDT message... libsccp does not offer formating yet */ |
| 148 | udt = (struct sccp_data_unitdata *) msgb_put(out, sizeof(*udt)); |
| 149 | udt->type = SCCP_MSG_TYPE_UDT; |
| 150 | udt->proto_class = SCCP_PROTOCOL_CLASS_0; |
| 151 | udt->variable_called = 3; |
| 152 | udt->variable_calling = 5; |
| 153 | udt->variable_data = 7; |
| 154 | |
| 155 | /* put the called and calling address. It is LV */ |
| 156 | data = msgb_put(out, 2 + 1); |
| 157 | data[0] = 2; |
| 158 | data[1] = 0x42; |
| 159 | data[2] = 0x1; |
| 160 | |
| 161 | data = msgb_put(out, 2 + 1); |
| 162 | data[0] = 2; |
| 163 | data[1] = 0x42; |
| 164 | data[2] = 0x1; |
| 165 | |
| 166 | data = msgb_put(out, 1); |
| 167 | data[0] = sizeof(*prt); |
| 168 | |
| 169 | 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] | 170 | prt->sst = type; |
| 171 | prt->assn = assn; |
Holger Hans Peter Freyther | 101cd0b | 2011-01-19 10:51:44 +0100 | [diff] [blame] | 172 | prt->apoc = apoc; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 173 | prt->mul_ind = 0; |
| 174 | |
| 175 | return out; |
| 176 | } |
| 177 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 178 | void mtp_link_set_stop(struct mtp_link_set *set) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 179 | { |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 180 | struct mtp_link *lnk; |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 181 | llist_for_each_entry(lnk, &set->links, entry) |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 182 | mtp_link_stop_link_test(lnk); |
| 183 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 184 | bsc_del_timer(&set->T18); |
| 185 | bsc_del_timer(&set->T20); |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 186 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 187 | set->sccp_up = 0; |
| 188 | set->running = 0; |
| 189 | set->linkset_up = 0; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 190 | } |
| 191 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 192 | void mtp_link_set_reset(struct mtp_link_set *set) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 193 | { |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 194 | struct mtp_link *lnk; |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 195 | mtp_link_set_stop(set); |
| 196 | set->running = 1; |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 197 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 198 | llist_for_each_entry(lnk, &set->links, entry) |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 199 | mtp_link_start_link_test(lnk); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 200 | } |
| 201 | |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 202 | /* unused right now but we want to use it again */ |
| 203 | int send_tfp(struct mtp_link *link, int apoc) |
Holger Hans Peter Freyther | 27c5e23 | 2011-01-18 18:52:34 +0100 | [diff] [blame] | 204 | { |
| 205 | struct msgb *msg; |
| 206 | msg = mtp_tfp_alloc(link, apoc); |
| 207 | if (!msg) |
| 208 | return -1; |
| 209 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 210 | mtp_link_submit(link, msg); |
Holger Hans Peter Freyther | 27c5e23 | 2011-01-18 18:52:34 +0100 | [diff] [blame] | 211 | return 0; |
| 212 | } |
| 213 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 214 | static int send_tra(struct mtp_link *link, int opc) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 215 | { |
| 216 | struct msgb *msg; |
Holger Hans Peter Freyther | adf7692 | 2011-01-18 19:01:43 +0100 | [diff] [blame] | 217 | msg = mtp_tra_alloc(link, opc); |
| 218 | if (!msg) |
| 219 | return -1; |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 220 | mtp_link_submit(link, msg); |
Holger Hans Peter Freyther | adf7692 | 2011-01-18 19:01:43 +0100 | [diff] [blame] | 221 | return 0; |
| 222 | } |
| 223 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 224 | static int send_tfa(struct mtp_link *link, int opc) |
Holger Hans Peter Freyther | cfbe80f | 2011-01-18 20:35:11 +0100 | [diff] [blame] | 225 | { |
| 226 | struct msgb *msg; |
| 227 | msg = mtp_tfa_alloc(link, opc); |
| 228 | if (!msg) |
| 229 | return -1; |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 230 | mtp_link_submit(link, msg); |
Holger Hans Peter Freyther | cfbe80f | 2011-01-18 20:35:11 +0100 | [diff] [blame] | 231 | return 0; |
| 232 | } |
| 233 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 234 | static int linkset_up(struct mtp_link *link) |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 235 | { |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 236 | struct mtp_link_set *set = link->set; |
| 237 | |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 238 | /* the link set is already up */ |
| 239 | if (set->linkset_up) |
| 240 | return 0; |
| 241 | |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 242 | set->linkset_up = 1; |
| 243 | bsc_schedule_timer(&set->T18, set->timeout_t18, 0); |
| 244 | bsc_schedule_timer(&set->T20, set->timeout_t20, 0); |
| 245 | |
| 246 | /* More the functionality of a SSP here... */ |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 247 | if (set->sccp_opc != set->opc && |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 248 | send_tfa(link, set->sccp_opc) != 0) { |
| 249 | LOGP(DINP, LOGL_ERROR, |
| 250 | "Failed to send TFA for OPC %d on linkset %d.\n", set->sccp_opc, set->nr); |
| 251 | } |
| 252 | |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 253 | if (set->isup_opc != set->opc && |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 254 | send_tfa(link, set->isup_opc) != 0) { |
| 255 | LOGP(DINP, LOGL_ERROR, |
| 256 | "Failed to send TFA for OPC %d on linkset %d.\n", set->sccp_opc, set->nr); |
| 257 | } |
| 258 | |
| 259 | return 0; |
| 260 | } |
| 261 | |
| 262 | static void linkset_t18_cb(void *_set) |
| 263 | { |
| 264 | struct mtp_link_set *set = _set; |
| 265 | struct mtp_link *link = set->slc[0]; |
| 266 | |
| 267 | if (!link) { |
| 268 | LOGP(DINP, LOGL_ERROR, |
| 269 | "Linkset restart but no link available on linkset %d\n", set->nr); |
| 270 | bsc_del_timer(&set->T20); |
| 271 | set->linkset_up = 0; |
| 272 | return; |
| 273 | } |
| 274 | |
| 275 | /* TODO: now send out routing states */ |
| 276 | LOGP(DINP, LOGL_NOTICE, "The linkset %d has collected routing data.\n", set->nr); |
Holger Hans Peter Freyther | 3574c12 | 2011-03-02 23:44:03 +0100 | [diff] [blame] | 277 | set->sccp_up = 1; |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 278 | } |
| 279 | |
| 280 | static void linkset_t20_cb(void *_set) |
| 281 | { |
| 282 | struct mtp_link_set *set = _set; |
| 283 | struct mtp_link *link = set->slc[0]; |
| 284 | |
| 285 | if (!link) { |
| 286 | LOGP(DINP, LOGL_ERROR, |
| 287 | "Linkset restart but no link available on linkset %d\n", set->nr); |
| 288 | bsc_del_timer(&set->T20); |
| 289 | set->linkset_up = 0; |
| 290 | return; |
| 291 | } |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 292 | |
| 293 | /* Send the TRA for all PCs */ |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 294 | if (send_tra(link, set->opc) != 0) |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 295 | return; |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 296 | |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 297 | LOGP(DINP, LOGL_NOTICE, |
Holger Hans Peter Freyther | 5e5758c | 2011-02-17 18:18:22 +0100 | [diff] [blame] | 298 | "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] | 299 | return; |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 300 | } |
| 301 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 302 | 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] | 303 | { |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 304 | struct mtp_level_3_cmn *cmn; |
Holger Hans Peter Freyther | ae74181 | 2010-12-08 11:28:12 +0100 | [diff] [blame] | 305 | uint16_t *apc; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 306 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 307 | if (hdr->ni != set->ni || l3_len < 1) { |
Holger Hans Peter Freyther | dedb7ce | 2010-10-08 17:49:24 +0800 | [diff] [blame] | 308 | LOGP(DINP, LOGL_ERROR, "Unhandled data (ni: %d len: %d)\n", |
| 309 | hdr->ni, l3_len); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 310 | return -1; |
| 311 | } |
| 312 | |
| 313 | cmn = (struct mtp_level_3_cmn *) &hdr->data[0]; |
| 314 | LOGP(DINP, LOGL_DEBUG, "reg msg: h0: 0x%x h1: 0x%x\n", |
| 315 | cmn->h0, cmn->h1); |
| 316 | |
| 317 | switch (cmn->h0) { |
| 318 | case MTP_TRF_RESTR_MSG_GRP: |
| 319 | switch (cmn->h1) { |
| 320 | case MTP_RESTR_MSG_ALLWED: |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 321 | LOGP(DINP, LOGL_INFO, |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 322 | "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] | 323 | /* |
| 324 | * TODO: routing should be done on a higher level. This should not |
| 325 | * arrive after we expired the timer but we are friendly here and |
| 326 | * respond with a TFA and TRA... |
| 327 | */ |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 328 | bsc_del_timer(&set->T18); |
| 329 | bsc_del_timer(&set->T20); |
| 330 | linkset_t18_cb(set); |
| 331 | linkset_t20_cb(set); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 332 | return 0; |
| 333 | break; |
| 334 | } |
| 335 | break; |
Holger Hans Peter Freyther | ae74181 | 2010-12-08 11:28:12 +0100 | [diff] [blame] | 336 | case MTP_PROHIBIT_MSG_GRP: |
| 337 | switch (cmn->h1) { |
| 338 | case MTP_PROHIBIT_MSG_SIG: |
| 339 | if (l3_len < 3) { |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 340 | 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] | 341 | return -1; |
| 342 | } |
| 343 | |
| 344 | apc = (uint16_t *) &hdr->data[1]; |
| 345 | LOGP(DINP, LOGL_INFO, |
Holger Hans Peter Freyther | 5e5758c | 2011-02-17 18:18:22 +0100 | [diff] [blame] | 346 | "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] | 347 | *apc, set->nr, set->name); |
Holger Hans Peter Freyther | ae74181 | 2010-12-08 11:28:12 +0100 | [diff] [blame] | 348 | return 0; |
| 349 | break; |
| 350 | } |
| 351 | break; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 352 | } |
| 353 | |
Holger Hans Peter Freyther | 5e5758c | 2011-02-17 18:18:22 +0100 | [diff] [blame] | 354 | LOGP(DINP, LOGL_ERROR, "Unknown message:%d/%d %s on %d/%s.\n", |
| 355 | cmn->h0, cmn->h1, hexdump(&hdr->data[0], l3_len), |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 356 | set->nr, set->name); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 357 | return -1; |
| 358 | } |
| 359 | |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 360 | 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] | 361 | { |
| 362 | struct msgb *out; |
| 363 | struct mtp_level_3_mng *mng; |
| 364 | |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 365 | if (hdr->ni != link->set->ni || l3_len < 1) { |
Holger Hans Peter Freyther | dedb7ce | 2010-10-08 17:49:24 +0800 | [diff] [blame] | 366 | LOGP(DINP, LOGL_ERROR, "Unhandled data (ni: %d len: %d)\n", |
| 367 | hdr->ni, l3_len); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 368 | return -1; |
| 369 | } |
| 370 | |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 371 | if (MTP_ADDR_DPC(hdr->addr) != link->set->opc) { |
Holger Hans Peter Freyther | 5e5758c | 2011-02-17 18:18:22 +0100 | [diff] [blame] | 372 | LOGP(DINP, LOGL_ERROR, "MSG for OPC %d not handled on %d/%s\n", |
| 373 | 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] | 374 | return -1; |
| 375 | } |
| 376 | |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 377 | mng = (struct mtp_level_3_mng *) &hdr->data[0]; |
| 378 | LOGP(DINP, LOGL_DEBUG, "reg msg: h0: 0x%x h1: 0x%x\n", |
| 379 | mng->cmn.h0, mng->cmn.h1); |
| 380 | |
| 381 | switch (mng->cmn.h0) { |
| 382 | case MTP_TST_MSG_GRP: |
| 383 | switch (mng->cmn.h1) { |
| 384 | case MTP_TST_MSG_SLTM: |
| 385 | /* simply respond to the request... */ |
Holger Hans Peter Freyther | 050577a | 2011-01-20 19:28:15 +0100 | [diff] [blame] | 386 | out = mtp_create_slta(link->set, |
| 387 | MTP_LINK_SLS(hdr->addr), |
| 388 | mng, l3_len); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 389 | if (!out) |
| 390 | return -1; |
Holger Hans Peter Freyther | 9543f4a | 2011-01-24 20:49:58 +0100 | [diff] [blame] | 391 | mtp_link_submit(link, out); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 392 | return 0; |
| 393 | break; |
| 394 | case MTP_TST_MSG_SLTA: |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 395 | /* If this link is proven set it up */ |
| 396 | if (mtp_link_slta(link, l3_len, mng) == 0) |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 397 | linkset_up(link); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 398 | break; |
| 399 | } |
| 400 | break; |
| 401 | } |
| 402 | |
| 403 | return -1; |
| 404 | } |
| 405 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 406 | 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] | 407 | { |
| 408 | struct msgb *out; |
| 409 | struct sccp_con_ctrl_prt_mgt *prt; |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 410 | struct sccp_parse_result sccp; |
Holger Hans Peter Freyther | 80ab4c6 | 2010-12-31 13:40:19 +0100 | [diff] [blame] | 411 | int type; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 412 | |
| 413 | msg->l2h = &hdr->data[0]; |
| 414 | if (msgb_l2len(msg) != l3_len) { |
| 415 | LOGP(DINP, LOGL_ERROR, "Size is wrong after playing with the l2h header.\n"); |
| 416 | return -1; |
| 417 | } |
| 418 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 419 | if (!set->sccp_up) { |
Holger Hans Peter Freyther | 5e5758c | 2011-02-17 18:18:22 +0100 | [diff] [blame] | 420 | 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] | 421 | set->nr, set->name); |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 422 | return -1; |
| 423 | } |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 424 | |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 425 | memset(&sccp, 0, sizeof(sccp)); |
| 426 | if (sccp_parse_header(msg, &sccp) != 0) { |
| 427 | LOGP(DINP, LOGL_ERROR, "Failed to parsed SCCP header.\n"); |
| 428 | return -1; |
| 429 | } |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 430 | |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 431 | /* check if it is a SST */ |
| 432 | if (sccp_determine_msg_type(msg) == SCCP_MSG_TYPE_UDT |
| 433 | && msg->l3h[0] == SCCP_SST) { |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 434 | if (msgb_l3len(msg) != 5) { |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 435 | LOGP(DINP, LOGL_ERROR, |
| 436 | "SCCP UDT msg of unexpected size: %u\n", |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 437 | msgb_l3len(msg)); |
| 438 | return -1; |
| 439 | } |
| 440 | |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 441 | prt = (struct sccp_con_ctrl_prt_mgt *) &msg->l3h[0]; |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 442 | if (prt->apoc != MTP_MAKE_APOC(set->sccp_opc)) { |
Holger Hans Peter Freyther | 5e5758c | 2011-02-17 18:18:22 +0100 | [diff] [blame] | 443 | 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] | 444 | ntohs(prt->apoc), prt->apoc, set->nr, set->name); |
Holger Hans Peter Freyther | 0945961 | 2010-12-31 16:53:40 +0100 | [diff] [blame] | 445 | type = SCCP_SSP; |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 446 | } else if (!set->supported_ssn[prt->assn]) { |
Holger Hans Peter Freyther | 5e5758c | 2011-02-17 18:18:22 +0100 | [diff] [blame] | 447 | 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] | 448 | prt->assn, set->nr, set->name); |
Holger Hans Peter Freyther | 80ab4c6 | 2010-12-31 13:40:19 +0100 | [diff] [blame] | 449 | type = SCCP_SSP; |
| 450 | } else { |
| 451 | type = SCCP_SSA; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 452 | } |
| 453 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 454 | 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] | 455 | MTP_LINK_SLS(hdr->addr)); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 456 | if (!out) |
| 457 | return -1; |
| 458 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 459 | 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] | 460 | return 0; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 461 | } |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 462 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 463 | rate_ctr_inc(&set->ctrg->ctr[MTP_LSET_SCCP_IN_MSG]); |
| 464 | 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] | 465 | return 0; |
| 466 | } |
| 467 | |
Holger Hans Peter Freyther | 56cba9a | 2011-03-03 01:16:53 +0100 | [diff] [blame^] | 468 | int mtp_link_handle_data(struct mtp_link *link, struct msgb *msg) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 469 | { |
| 470 | int rc = -1; |
| 471 | struct mtp_level_3_hdr *hdr; |
| 472 | int l3_len; |
| 473 | |
| 474 | if (!msg->l2h || msgb_l2len(msg) < sizeof(*hdr)) |
| 475 | return -1; |
| 476 | |
Holger Hans Peter Freyther | 2d845fc | 2011-01-20 15:42:13 +0100 | [diff] [blame] | 477 | if (!link->set->running) { |
Holger Hans Peter Freyther | 5a34c7f | 2011-02-17 03:23:42 +0100 | [diff] [blame] | 478 | LOGP(DINP, LOGL_ERROR, |
Holger Hans Peter Freyther | 5e5758c | 2011-02-17 18:18:22 +0100 | [diff] [blame] | 479 | "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] | 480 | link->nr, link->name, link->set->nr, link->set->name); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 481 | return -1; |
| 482 | } |
| 483 | |
| 484 | hdr = (struct mtp_level_3_hdr *) msg->l2h; |
| 485 | l3_len = msgb_l2len(msg) - sizeof(*hdr); |
| 486 | |
Holger Hans Peter Freyther | 326a1f7 | 2011-01-24 20:52:30 +0100 | [diff] [blame] | 487 | rate_ctr_inc(&link->ctrg->ctr[MTP_LNK_IN]); |
Holger Hans Peter Freyther | c5d897e | 2011-01-21 20:54:55 +0100 | [diff] [blame] | 488 | rate_ctr_inc(&link->set->ctrg->ctr[MTP_LSET_TOTA_IN_MSG]); |
| 489 | |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 490 | switch (hdr->ser_ind) { |
| 491 | case MTP_SI_MNT_SNM_MSG: |
Holger Hans Peter Freyther | 2d845fc | 2011-01-20 15:42:13 +0100 | [diff] [blame] | 492 | rc = mtp_link_sign_msg(link->set, hdr, l3_len); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 493 | break; |
| 494 | case MTP_SI_MNT_REG_MSG: |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 495 | rc = mtp_link_regular_msg(link, hdr, l3_len); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 496 | break; |
| 497 | case MTP_SI_MNT_SCCP: |
Holger Hans Peter Freyther | 2d845fc | 2011-01-20 15:42:13 +0100 | [diff] [blame] | 498 | 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] | 499 | break; |
Holger Hans Peter Freyther | 3a80cb2 | 2010-12-08 11:12:46 +0100 | [diff] [blame] | 500 | case MTP_SI_MNT_ISUP: |
Holger Hans Peter Freyther | 433ea2f | 2010-12-10 07:34:01 +0100 | [diff] [blame] | 501 | msg->l3h = &hdr->data[0]; |
Holger Hans Peter Freyther | c5d897e | 2011-01-21 20:54:55 +0100 | [diff] [blame] | 502 | 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] | 503 | 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] | 504 | break; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 505 | default: |
| 506 | fprintf(stderr, "Unhandled: %u\n", hdr->ser_ind); |
| 507 | break; |
| 508 | } |
| 509 | |
| 510 | return rc; |
| 511 | } |
| 512 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 513 | 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] | 514 | { |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 515 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 516 | if (!set->sccp_up) { |
Holger Hans Peter Freyther | 5e5758c | 2011-02-17 18:18:22 +0100 | [diff] [blame] | 517 | 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] | 518 | set->nr, set->name); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 519 | return -1; |
| 520 | } |
| 521 | |
Holger Hans Peter Freyther | 346e1c4 | 2011-01-02 18:11:37 +0100 | [diff] [blame] | 522 | if (sls == -1) { |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 523 | sls = set->last_sls; |
| 524 | set->last_sls = (set->last_sls + 1) % 16; |
Holger Hans Peter Freyther | 346e1c4 | 2011-01-02 18:11:37 +0100 | [diff] [blame] | 525 | } |
| 526 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 527 | rate_ctr_inc(&set->ctrg->ctr[MTP_LSET_SCCP_OUT_MSG]); |
| 528 | 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] | 529 | } |
| 530 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 531 | 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] | 532 | const uint8_t *data, unsigned int length) |
| 533 | { |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 534 | rate_ctr_inc(&set->ctrg->ctr[MTP_LSET_ISUP_OUT_MSG]); |
| 535 | 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] | 536 | } |
| 537 | |
Holger Hans Peter Freyther | 0452f22 | 2011-02-03 13:35:42 +0100 | [diff] [blame] | 538 | int mtp_link_set_send(struct mtp_link_set *set, struct msgb *msg) |
| 539 | { |
| 540 | int sls; |
| 541 | struct mtp_level_3_hdr *hdr; |
| 542 | |
| 543 | if (msgb_l2len(msg) < sizeof(*hdr)) |
| 544 | return -1; |
| 545 | |
| 546 | hdr = (struct mtp_level_3_hdr *) msg->l2h; |
| 547 | sls = MTP_LINK_SLS(hdr->addr); |
| 548 | if (!set->slc[sls]) |
| 549 | return -2; |
| 550 | |
| 551 | mtp_link_submit(set->slc[sls], msg); |
| 552 | return 0; |
| 553 | } |
| 554 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 555 | 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] | 556 | const uint8_t *data, unsigned int length) |
| 557 | { |
| 558 | uint8_t *put_ptr; |
| 559 | struct mtp_level_3_hdr *hdr; |
| 560 | struct msgb *msg; |
| 561 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 562 | if (!set->slc[sls % 16]) |
Holger Hans Peter Freyther | 92affda | 2011-01-17 20:12:32 +0100 | [diff] [blame] | 563 | return -1; |
| 564 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 565 | msg = mtp_msg_alloc(set); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 566 | if (!msg) |
| 567 | return -1; |
| 568 | |
| 569 | hdr = (struct mtp_level_3_hdr *) msg->l2h; |
Holger Hans Peter Freyther | 3aad776 | 2010-12-10 12:18:57 +0100 | [diff] [blame] | 570 | hdr->ser_ind = type; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 571 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 572 | hdr->addr = MTP_ADDR(sls % 16, set->dpc, pc); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 573 | |
| 574 | /* copy the raw sccp data */ |
| 575 | put_ptr = msgb_put(msg, length); |
| 576 | memcpy(put_ptr, data, length); |
| 577 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 578 | mtp_link_submit(set->slc[sls % 16], msg); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 579 | return 0; |
| 580 | } |
Holger Hans Peter Freyther | 069e635 | 2011-01-04 13:01:23 +0100 | [diff] [blame] | 581 | |
Holger Hans Peter Freyther | 0e2f911 | 2011-01-17 11:54:39 +0100 | [diff] [blame] | 582 | static struct mtp_link *find_next_link(struct mtp_link_set *set, |
| 583 | struct mtp_link *data) |
Holger Hans Peter Freyther | d91f940 | 2011-01-16 11:56:05 +0100 | [diff] [blame] | 584 | { |
| 585 | int found = 0; |
Holger Hans Peter Freyther | 0e2f911 | 2011-01-17 11:54:39 +0100 | [diff] [blame] | 586 | struct mtp_link *next; |
Holger Hans Peter Freyther | d91f940 | 2011-01-16 11:56:05 +0100 | [diff] [blame] | 587 | |
| 588 | if (llist_empty(&set->links)) |
| 589 | return NULL; |
| 590 | |
| 591 | if (data == NULL) |
| 592 | found = 1; |
| 593 | |
| 594 | /* try to find the next one */ |
| 595 | llist_for_each_entry(next, &set->links, entry) { |
| 596 | if (found && next->available) |
| 597 | return next; |
| 598 | if (next == data) |
| 599 | found = 1; |
| 600 | } |
| 601 | |
| 602 | /* try to find any one */ |
| 603 | llist_for_each_entry(next, &set->links, entry) |
| 604 | if (next->available) |
| 605 | return next; |
| 606 | |
| 607 | return NULL; |
| 608 | } |
| 609 | |
Holger Hans Peter Freyther | 069e635 | 2011-01-04 13:01:23 +0100 | [diff] [blame] | 610 | void mtp_link_set_init_slc(struct mtp_link_set *set) |
| 611 | { |
Holger Hans Peter Freyther | 1ec2a74 | 2011-01-25 13:24:06 +0100 | [diff] [blame] | 612 | struct mtp_link *link = NULL, *tmp; |
Holger Hans Peter Freyther | 069e635 | 2011-01-04 13:01:23 +0100 | [diff] [blame] | 613 | int i; |
Holger Hans Peter Freyther | d91f940 | 2011-01-16 11:56:05 +0100 | [diff] [blame] | 614 | |
Holger Hans Peter Freyther | 1ec2a74 | 2011-01-25 13:24:06 +0100 | [diff] [blame] | 615 | llist_for_each_entry(tmp, &set->links, entry) |
| 616 | tmp->first_sls = 100; |
| 617 | |
Holger Hans Peter Freyther | d91f940 | 2011-01-16 11:56:05 +0100 | [diff] [blame] | 618 | |
| 619 | for (i = 0; i < ARRAY_SIZE(set->slc); ++i) { |
| 620 | link = find_next_link(set, link); |
| 621 | set->slc[i] = link; |
Holger Hans Peter Freyther | 1ec2a74 | 2011-01-25 13:24:06 +0100 | [diff] [blame] | 622 | |
| 623 | if (link && i < link->first_sls) |
| 624 | link->first_sls = i; |
Holger Hans Peter Freyther | d91f940 | 2011-01-16 11:56:05 +0100 | [diff] [blame] | 625 | } |
Holger Hans Peter Freyther | fe72c16 | 2011-01-04 13:21:52 +0100 | [diff] [blame] | 626 | } |
| 627 | |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 628 | struct mtp_link_set *mtp_link_set_alloc(struct bsc_data *bsc) |
| 629 | { |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 630 | struct mtp_link_set *set; |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 631 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 632 | set = talloc_zero(bsc, struct mtp_link_set); |
| 633 | if (!set) |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 634 | return NULL; |
| 635 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 636 | set->ctrg = rate_ctr_group_alloc(set, |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 637 | mtp_link_set_rate_ctr_desc(), |
| 638 | bsc->num_linksets + 1); |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 639 | if (!set->ctrg) { |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 640 | LOGP(DINP, LOGL_ERROR, "Failed to allocate counter.\n"); |
| 641 | return NULL; |
| 642 | } |
| 643 | |
| 644 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 645 | set->ni = MTP_NI_NATION_NET; |
| 646 | INIT_LLIST_HEAD(&set->links); |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 647 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 648 | set->nr = bsc->num_linksets++; |
| 649 | set->sccp_opc = set->isup_opc = -1; |
| 650 | set->pcap_fd = bsc->pcap_fd; |
| 651 | set->bsc = bsc; |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 652 | |
| 653 | /* timeout code */ |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 654 | set->timeout_t18 = 15; |
| 655 | set->timeout_t20 = 16; |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 656 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 657 | set->T18.cb = linkset_t18_cb; |
| 658 | set->T18.data = set; |
| 659 | set->T20.cb = linkset_t20_cb; |
| 660 | set->T20.data = set; |
Holger Hans Peter Freyther | 47c9faa | 2011-02-23 11:25:45 +0100 | [diff] [blame] | 661 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 662 | llist_add_tail(&set->entry, &bsc->linksets); |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 663 | |
Holger Hans Peter Freyther | d062f83 | 2011-02-23 16:58:15 +0100 | [diff] [blame] | 664 | return set; |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 665 | } |
| 666 | |
| 667 | struct mtp_link_set *mtp_link_set_num(struct bsc_data *bsc, int num) |
| 668 | { |
| 669 | struct mtp_link_set *set; |
| 670 | |
| 671 | llist_for_each_entry(set, &bsc->linksets, entry) |
Holger Hans Peter Freyther | a33b23f | 2011-02-16 23:37:40 +0100 | [diff] [blame] | 672 | if (set->nr == num) |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 673 | return set; |
| 674 | |
| 675 | return NULL; |
| 676 | } |