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 | 569f1e1 | 2011-01-02 18:47:49 +0100 | [diff] [blame] | 36 | static int mtp_int_submit(struct mtp_link_set *link, 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 | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 46 | struct msgb *mtp_msg_alloc(struct mtp_link_set *link) |
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; |
| 57 | hdr->addr = MTP_ADDR(0x0, link->dpc, link->opc); |
Holger Hans Peter Freyther | 4e3e28e | 2010-11-26 21:05:39 +0100 | [diff] [blame] | 58 | hdr->ni = link->ni; |
Holger Hans Peter Freyther | e976df1 | 2010-11-26 21:07:11 +0100 | [diff] [blame] | 59 | hdr->spare = link->spare; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 60 | return msg; |
| 61 | } |
| 62 | |
Holger Hans Peter Freyther | 050577a | 2011-01-20 19:28:15 +0100 | [diff] [blame] | 63 | static struct msgb *mtp_create_slta(struct mtp_link_set *link, int sls, |
| 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; |
| 68 | struct msgb *out = mtp_msg_alloc(link); |
| 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 | 050577a | 2011-01-20 19:28:15 +0100 | [diff] [blame] | 75 | hdr->addr = MTP_ADDR(sls, link->dpc, link->opc); |
| 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 | 569f1e1 | 2011-01-02 18:47:49 +0100 | [diff] [blame] | 135 | static struct msgb *mtp_sccp_alloc_scmg(struct mtp_link_set *link, |
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 | |
| 144 | struct msgb *out = mtp_msg_alloc(link); |
| 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 | 7a72556 | 2011-01-01 13:34:58 +0100 | [diff] [blame] | 153 | hdr->addr = MTP_ADDR(sls % 16, link->dpc, link->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 | 569f1e1 | 2011-01-02 18:47:49 +0100 | [diff] [blame] | 186 | void mtp_link_set_stop(struct mtp_link_set *link) |
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; |
| 189 | llist_for_each_entry(lnk, &link->links, entry) |
| 190 | mtp_link_stop_link_test(lnk); |
| 191 | |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 192 | link->sccp_up = 0; |
| 193 | link->running = 0; |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 194 | link->linkset_up = 0; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 195 | } |
| 196 | |
Holger Hans Peter Freyther | 569f1e1 | 2011-01-02 18:47:49 +0100 | [diff] [blame] | 197 | void mtp_link_set_reset(struct mtp_link_set *link) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 198 | { |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 199 | struct mtp_link *lnk; |
Holger Hans Peter Freyther | 569f1e1 | 2011-01-02 18:47:49 +0100 | [diff] [blame] | 200 | mtp_link_set_stop(link); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 201 | link->running = 1; |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 202 | |
| 203 | llist_for_each_entry(lnk, &link->links, entry) |
| 204 | mtp_link_start_link_test(lnk); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 205 | } |
| 206 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 207 | static int send_tfp(struct mtp_link *link, int apoc) |
Holger Hans Peter Freyther | 27c5e23 | 2011-01-18 18:52:34 +0100 | [diff] [blame] | 208 | { |
| 209 | struct msgb *msg; |
| 210 | msg = mtp_tfp_alloc(link, apoc); |
| 211 | if (!msg) |
| 212 | return -1; |
| 213 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 214 | mtp_link_submit(link, msg); |
Holger Hans Peter Freyther | 27c5e23 | 2011-01-18 18:52:34 +0100 | [diff] [blame] | 215 | return 0; |
| 216 | } |
| 217 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 218 | static int send_tra(struct mtp_link *link, int opc) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 219 | { |
| 220 | struct msgb *msg; |
Holger Hans Peter Freyther | adf7692 | 2011-01-18 19:01:43 +0100 | [diff] [blame] | 221 | msg = mtp_tra_alloc(link, opc); |
| 222 | if (!msg) |
| 223 | return -1; |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 224 | mtp_link_submit(link, msg); |
Holger Hans Peter Freyther | adf7692 | 2011-01-18 19:01:43 +0100 | [diff] [blame] | 225 | return 0; |
| 226 | } |
| 227 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 228 | static int send_tfa(struct mtp_link *link, int opc) |
Holger Hans Peter Freyther | cfbe80f | 2011-01-18 20:35:11 +0100 | [diff] [blame] | 229 | { |
| 230 | struct msgb *msg; |
| 231 | msg = mtp_tfa_alloc(link, opc); |
| 232 | if (!msg) |
| 233 | return -1; |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 234 | mtp_link_submit(link, msg); |
Holger Hans Peter Freyther | cfbe80f | 2011-01-18 20:35:11 +0100 | [diff] [blame] | 235 | return 0; |
| 236 | } |
| 237 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 238 | static int linkset_up(struct mtp_link *link) |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 239 | { |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 240 | struct mtp_link_set *set = link->set; |
| 241 | |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 242 | /* the link set is already up */ |
| 243 | if (set->linkset_up) |
| 244 | return 0; |
| 245 | |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 246 | if (send_tfp(link, 0) != 0) |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 247 | return -1; |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 248 | if (send_tfp(link, set->opc) != 0) |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 249 | return -1; |
| 250 | if (set->sccp_opc != set->opc && |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 251 | send_tfp(link, set->sccp_opc) != 0) |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 252 | return -1; |
| 253 | if (set->isup_opc != set->opc && |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 254 | send_tfp(link, set->isup_opc) != 0) |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 255 | return -1; |
| 256 | |
| 257 | /* Send the TRA for all PCs */ |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 258 | if (send_tra(link, set->opc) != 0) |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 259 | return -1; |
| 260 | if (set->sccp_opc != set->opc && |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 261 | send_tfa(link, set->sccp_opc) != 0) |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 262 | return -1; |
| 263 | if (set->isup_opc != set->opc && |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 264 | send_tfa(link, set->isup_opc) != 0) |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 265 | return -1; |
| 266 | |
| 267 | set->linkset_up = 1; |
| 268 | LOGP(DINP, LOGL_NOTICE, |
Holger Hans Peter Freyther | 38d936a | 2011-01-26 12:41:42 +0100 | [diff] [blame] | 269 | "The linkset %s is considered running.\n", set->name); |
Holger Hans Peter Freyther | 606eae8 | 2011-01-20 14:23:10 +0100 | [diff] [blame] | 270 | return 0; |
| 271 | } |
| 272 | |
Holger Hans Peter Freyther | adf7692 | 2011-01-18 19:01:43 +0100 | [diff] [blame] | 273 | static int mtp_link_sign_msg(struct mtp_link_set *link, struct mtp_level_3_hdr *hdr, int l3_len) |
| 274 | { |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 275 | struct mtp_level_3_cmn *cmn; |
Holger Hans Peter Freyther | ae74181 | 2010-12-08 11:28:12 +0100 | [diff] [blame] | 276 | uint16_t *apc; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 277 | |
Holger Hans Peter Freyther | 4e3e28e | 2010-11-26 21:05:39 +0100 | [diff] [blame] | 278 | if (hdr->ni != link->ni || l3_len < 1) { |
Holger Hans Peter Freyther | dedb7ce | 2010-10-08 17:49:24 +0800 | [diff] [blame] | 279 | LOGP(DINP, LOGL_ERROR, "Unhandled data (ni: %d len: %d)\n", |
| 280 | hdr->ni, l3_len); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 281 | return -1; |
| 282 | } |
| 283 | |
| 284 | cmn = (struct mtp_level_3_cmn *) &hdr->data[0]; |
| 285 | LOGP(DINP, LOGL_DEBUG, "reg msg: h0: 0x%x h1: 0x%x\n", |
| 286 | cmn->h0, cmn->h1); |
| 287 | |
| 288 | switch (cmn->h0) { |
| 289 | case MTP_TRF_RESTR_MSG_GRP: |
| 290 | switch (cmn->h1) { |
| 291 | case MTP_RESTR_MSG_ALLWED: |
Holger Hans Peter Freyther | d3f412b | 2011-01-28 18:52:16 +0100 | [diff] [blame] | 292 | LOGP(DINP, LOGL_INFO, "Received Restart Allowed. SST could be next: %s.\n", link->name); |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 293 | link->sccp_up = 1; |
Holger Hans Peter Freyther | d3f412b | 2011-01-28 18:52:16 +0100 | [diff] [blame] | 294 | LOGP(DINP, LOGL_INFO, "SCCP traffic allowed on %s.\n", link->name); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 295 | return 0; |
| 296 | break; |
| 297 | } |
| 298 | break; |
Holger Hans Peter Freyther | ae74181 | 2010-12-08 11:28:12 +0100 | [diff] [blame] | 299 | case MTP_PROHIBIT_MSG_GRP: |
| 300 | switch (cmn->h1) { |
| 301 | case MTP_PROHIBIT_MSG_SIG: |
| 302 | if (l3_len < 3) { |
| 303 | LOGP(DINP, LOGL_ERROR, "TFP is too short.\n"); |
| 304 | return -1; |
| 305 | } |
| 306 | |
| 307 | apc = (uint16_t *) &hdr->data[1]; |
| 308 | LOGP(DINP, LOGL_INFO, |
| 309 | "TFP for the affected point code: %d\n", *apc); |
| 310 | return 0; |
| 311 | break; |
| 312 | } |
| 313 | break; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 314 | } |
| 315 | |
Holger Hans Peter Freyther | 1291ce5 | 2010-12-08 11:10:34 +0100 | [diff] [blame] | 316 | LOGP(DINP, LOGL_ERROR, "Unknown message:%d/%d %s\n", cmn->h0, cmn->h1, hexdump(&hdr->data[0], l3_len)); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 317 | return -1; |
| 318 | } |
| 319 | |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 320 | 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] | 321 | { |
| 322 | struct msgb *out; |
| 323 | struct mtp_level_3_mng *mng; |
| 324 | |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 325 | if (hdr->ni != link->set->ni || l3_len < 1) { |
Holger Hans Peter Freyther | dedb7ce | 2010-10-08 17:49:24 +0800 | [diff] [blame] | 326 | LOGP(DINP, LOGL_ERROR, "Unhandled data (ni: %d len: %d)\n", |
| 327 | hdr->ni, l3_len); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 328 | return -1; |
| 329 | } |
| 330 | |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 331 | if (MTP_ADDR_DPC(hdr->addr) != link->set->opc) { |
Holger Hans Peter Freyther | 157de2a | 2011-01-20 13:05:54 +0100 | [diff] [blame] | 332 | LOGP(DINP, LOGL_ERROR, "MSG for 0x%x not handled by 0x%x\n", |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 333 | MTP_ADDR_DPC(hdr->addr), link->set->opc); |
Holger Hans Peter Freyther | 157de2a | 2011-01-20 13:05:54 +0100 | [diff] [blame] | 334 | return -1; |
| 335 | } |
| 336 | |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 337 | mng = (struct mtp_level_3_mng *) &hdr->data[0]; |
| 338 | LOGP(DINP, LOGL_DEBUG, "reg msg: h0: 0x%x h1: 0x%x\n", |
| 339 | mng->cmn.h0, mng->cmn.h1); |
| 340 | |
| 341 | switch (mng->cmn.h0) { |
| 342 | case MTP_TST_MSG_GRP: |
| 343 | switch (mng->cmn.h1) { |
| 344 | case MTP_TST_MSG_SLTM: |
| 345 | /* simply respond to the request... */ |
Holger Hans Peter Freyther | 050577a | 2011-01-20 19:28:15 +0100 | [diff] [blame] | 346 | out = mtp_create_slta(link->set, |
| 347 | MTP_LINK_SLS(hdr->addr), |
| 348 | mng, l3_len); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 349 | if (!out) |
| 350 | return -1; |
Holger Hans Peter Freyther | 9543f4a | 2011-01-24 20:49:58 +0100 | [diff] [blame] | 351 | mtp_link_submit(link, out); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 352 | return 0; |
| 353 | break; |
| 354 | case MTP_TST_MSG_SLTA: |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 355 | /* If this link is proven set it up */ |
| 356 | if (mtp_link_slta(link, l3_len, mng) == 0) |
Holger Hans Peter Freyther | 7d336a5 | 2011-01-25 13:29:56 +0100 | [diff] [blame] | 357 | linkset_up(link); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 358 | break; |
| 359 | } |
| 360 | break; |
| 361 | } |
| 362 | |
| 363 | return -1; |
| 364 | } |
| 365 | |
Holger Hans Peter Freyther | 569f1e1 | 2011-01-02 18:47:49 +0100 | [diff] [blame] | 366 | static int mtp_link_sccp_data(struct mtp_link_set *link, 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] | 367 | { |
| 368 | struct msgb *out; |
| 369 | struct sccp_con_ctrl_prt_mgt *prt; |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 370 | struct sccp_parse_result sccp; |
Holger Hans Peter Freyther | 80ab4c6 | 2010-12-31 13:40:19 +0100 | [diff] [blame] | 371 | int type; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 372 | |
| 373 | msg->l2h = &hdr->data[0]; |
| 374 | if (msgb_l2len(msg) != l3_len) { |
| 375 | LOGP(DINP, LOGL_ERROR, "Size is wrong after playing with the l2h header.\n"); |
| 376 | return -1; |
| 377 | } |
| 378 | |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 379 | if (!link->sccp_up) { |
| 380 | LOGP(DINP, LOGL_ERROR, "SCCP traffic is not allowed.\n"); |
| 381 | return -1; |
| 382 | } |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 383 | |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 384 | memset(&sccp, 0, sizeof(sccp)); |
| 385 | if (sccp_parse_header(msg, &sccp) != 0) { |
| 386 | LOGP(DINP, LOGL_ERROR, "Failed to parsed SCCP header.\n"); |
| 387 | return -1; |
| 388 | } |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 389 | |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 390 | /* check if it is a SST */ |
| 391 | if (sccp_determine_msg_type(msg) == SCCP_MSG_TYPE_UDT |
| 392 | && msg->l3h[0] == SCCP_SST) { |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 393 | if (msgb_l3len(msg) != 5) { |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 394 | LOGP(DINP, LOGL_ERROR, |
| 395 | "SCCP UDT msg of unexpected size: %u\n", |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 396 | msgb_l3len(msg)); |
| 397 | return -1; |
| 398 | } |
| 399 | |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 400 | prt = (struct sccp_con_ctrl_prt_mgt *) &msg->l3h[0]; |
Holger Hans Peter Freyther | 7a72556 | 2011-01-01 13:34:58 +0100 | [diff] [blame] | 401 | if (prt->apoc != MTP_MAKE_APOC(link->sccp_opc)) { |
Holger Hans Peter Freyther | 0945961 | 2010-12-31 16:53:40 +0100 | [diff] [blame] | 402 | LOGP(DINP, LOGL_ERROR, "Unknown APOC: %u/%u\n", |
| 403 | ntohs(prt->apoc), prt->apoc); |
| 404 | type = SCCP_SSP; |
Holger Hans Peter Freyther | 1b5d846 | 2011-02-17 01:48:42 +0100 | [diff] [blame^] | 405 | } else if (!link->supported_ssn[prt->assn]) { |
Holger Hans Peter Freyther | 0945961 | 2010-12-31 16:53:40 +0100 | [diff] [blame] | 406 | LOGP(DINP, LOGL_ERROR, "Unknown affected SSN assn: %u\n", |
| 407 | prt->assn); |
Holger Hans Peter Freyther | 80ab4c6 | 2010-12-31 13:40:19 +0100 | [diff] [blame] | 408 | type = SCCP_SSP; |
| 409 | } else { |
| 410 | type = SCCP_SSA; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 411 | } |
| 412 | |
Holger Hans Peter Freyther | 101cd0b | 2011-01-19 10:51:44 +0100 | [diff] [blame] | 413 | out = mtp_sccp_alloc_scmg(link, type, prt->assn, prt->apoc, |
Holger Hans Peter Freyther | 80ab4c6 | 2010-12-31 13:40:19 +0100 | [diff] [blame] | 414 | MTP_LINK_SLS(hdr->addr)); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 415 | if (!out) |
| 416 | return -1; |
| 417 | |
Holger Hans Peter Freyther | 9543f4a | 2011-01-24 20:49:58 +0100 | [diff] [blame] | 418 | mtp_link_submit(link->slc[MTP_LINK_SLS(hdr->addr)], out); |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 419 | return 0; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 420 | } |
Holger Hans Peter Freyther | d10a3c1 | 2010-12-10 12:27:00 +0100 | [diff] [blame] | 421 | |
Holger Hans Peter Freyther | c5d897e | 2011-01-21 20:54:55 +0100 | [diff] [blame] | 422 | rate_ctr_inc(&link->ctrg->ctr[MTP_LSET_SCCP_IN_MSG]); |
Holger Hans Peter Freyther | 569f1e1 | 2011-01-02 18:47:49 +0100 | [diff] [blame] | 423 | mtp_link_set_forward_sccp(link, msg, MTP_LINK_SLS(hdr->addr)); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 424 | return 0; |
| 425 | } |
| 426 | |
Holger Hans Peter Freyther | bee2ed1 | 2011-01-18 13:29:42 +0100 | [diff] [blame] | 427 | 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] | 428 | { |
| 429 | int rc = -1; |
| 430 | struct mtp_level_3_hdr *hdr; |
| 431 | int l3_len; |
| 432 | |
| 433 | if (!msg->l2h || msgb_l2len(msg) < sizeof(*hdr)) |
| 434 | return -1; |
| 435 | |
Holger Hans Peter Freyther | 2d845fc | 2011-01-20 15:42:13 +0100 | [diff] [blame] | 436 | if (!link->set->running) { |
Holger Hans Peter Freyther | 38d936a | 2011-01-26 12:41:42 +0100 | [diff] [blame] | 437 | LOGP(DINP, LOGL_ERROR, "Link is not running. Call mtp_link_reset first: %s/%d\n", |
| 438 | link->set->name, link->link_no); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 439 | return -1; |
| 440 | } |
| 441 | |
| 442 | hdr = (struct mtp_level_3_hdr *) msg->l2h; |
| 443 | l3_len = msgb_l2len(msg) - sizeof(*hdr); |
| 444 | |
Holger Hans Peter Freyther | 326a1f7 | 2011-01-24 20:52:30 +0100 | [diff] [blame] | 445 | rate_ctr_inc(&link->ctrg->ctr[MTP_LNK_IN]); |
Holger Hans Peter Freyther | c5d897e | 2011-01-21 20:54:55 +0100 | [diff] [blame] | 446 | rate_ctr_inc(&link->set->ctrg->ctr[MTP_LSET_TOTA_IN_MSG]); |
| 447 | |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 448 | switch (hdr->ser_ind) { |
| 449 | case MTP_SI_MNT_SNM_MSG: |
Holger Hans Peter Freyther | 2d845fc | 2011-01-20 15:42:13 +0100 | [diff] [blame] | 450 | rc = mtp_link_sign_msg(link->set, hdr, l3_len); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 451 | break; |
| 452 | case MTP_SI_MNT_REG_MSG: |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 453 | rc = mtp_link_regular_msg(link, hdr, l3_len); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 454 | break; |
| 455 | case MTP_SI_MNT_SCCP: |
Holger Hans Peter Freyther | 2d845fc | 2011-01-20 15:42:13 +0100 | [diff] [blame] | 456 | 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] | 457 | break; |
Holger Hans Peter Freyther | 3a80cb2 | 2010-12-08 11:12:46 +0100 | [diff] [blame] | 458 | case MTP_SI_MNT_ISUP: |
Holger Hans Peter Freyther | 433ea2f | 2010-12-10 07:34:01 +0100 | [diff] [blame] | 459 | msg->l3h = &hdr->data[0]; |
Holger Hans Peter Freyther | c5d897e | 2011-01-21 20:54:55 +0100 | [diff] [blame] | 460 | 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] | 461 | 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] | 462 | break; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 463 | default: |
| 464 | fprintf(stderr, "Unhandled: %u\n", hdr->ser_ind); |
| 465 | break; |
| 466 | } |
| 467 | |
| 468 | return rc; |
| 469 | } |
| 470 | |
Holger Hans Peter Freyther | 569f1e1 | 2011-01-02 18:47:49 +0100 | [diff] [blame] | 471 | int mtp_link_set_submit_sccp_data(struct mtp_link_set *link, int sls, const uint8_t *data, unsigned int length) |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 472 | { |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 473 | |
| 474 | if (!link->sccp_up) { |
| 475 | LOGP(DINP, LOGL_ERROR, "SCCP msg after TRA and before SSA. Dropping it.\n"); |
| 476 | return -1; |
| 477 | } |
| 478 | |
Holger Hans Peter Freyther | 346e1c4 | 2011-01-02 18:11:37 +0100 | [diff] [blame] | 479 | if (sls == -1) { |
| 480 | sls = link->last_sls; |
| 481 | link->last_sls = (link->last_sls + 1) % 16; |
| 482 | } |
| 483 | |
Holger Hans Peter Freyther | c5d897e | 2011-01-21 20:54:55 +0100 | [diff] [blame] | 484 | rate_ctr_inc(&link->ctrg->ctr[MTP_LSET_SCCP_OUT_MSG]); |
Holger Hans Peter Freyther | 7a72556 | 2011-01-01 13:34:58 +0100 | [diff] [blame] | 485 | return mtp_int_submit(link, link->sccp_opc, sls, MTP_SI_MNT_SCCP, data, length); |
Holger Hans Peter Freyther | 3aad776 | 2010-12-10 12:18:57 +0100 | [diff] [blame] | 486 | } |
| 487 | |
Holger Hans Peter Freyther | 569f1e1 | 2011-01-02 18:47:49 +0100 | [diff] [blame] | 488 | int mtp_link_set_submit_isup_data(struct mtp_link_set *link, int sls, |
Holger Hans Peter Freyther | 3aad776 | 2010-12-10 12:18:57 +0100 | [diff] [blame] | 489 | const uint8_t *data, unsigned int length) |
| 490 | { |
Holger Hans Peter Freyther | c5d897e | 2011-01-21 20:54:55 +0100 | [diff] [blame] | 491 | rate_ctr_inc(&link->ctrg->ctr[MTP_LSET_ISUP_OUT_MSG]); |
Holger Hans Peter Freyther | d8a73e2 | 2011-01-17 22:37:11 +0100 | [diff] [blame] | 492 | return mtp_int_submit(link, link->isup_opc, sls, MTP_SI_MNT_ISUP, data, length); |
Holger Hans Peter Freyther | 3aad776 | 2010-12-10 12:18:57 +0100 | [diff] [blame] | 493 | } |
| 494 | |
Holger Hans Peter Freyther | 0452f22 | 2011-02-03 13:35:42 +0100 | [diff] [blame] | 495 | int mtp_link_set_send(struct mtp_link_set *set, struct msgb *msg) |
| 496 | { |
| 497 | int sls; |
| 498 | struct mtp_level_3_hdr *hdr; |
| 499 | |
| 500 | if (msgb_l2len(msg) < sizeof(*hdr)) |
| 501 | return -1; |
| 502 | |
| 503 | hdr = (struct mtp_level_3_hdr *) msg->l2h; |
| 504 | sls = MTP_LINK_SLS(hdr->addr); |
| 505 | if (!set->slc[sls]) |
| 506 | return -2; |
| 507 | |
| 508 | mtp_link_submit(set->slc[sls], msg); |
| 509 | return 0; |
| 510 | } |
| 511 | |
Holger Hans Peter Freyther | 569f1e1 | 2011-01-02 18:47:49 +0100 | [diff] [blame] | 512 | static int mtp_int_submit(struct mtp_link_set *link, int pc, int sls, int type, |
Holger Hans Peter Freyther | 3aad776 | 2010-12-10 12:18:57 +0100 | [diff] [blame] | 513 | const uint8_t *data, unsigned int length) |
| 514 | { |
| 515 | uint8_t *put_ptr; |
| 516 | struct mtp_level_3_hdr *hdr; |
| 517 | struct msgb *msg; |
| 518 | |
Holger Hans Peter Freyther | 92affda | 2011-01-17 20:12:32 +0100 | [diff] [blame] | 519 | if (!link->slc[sls % 16]) |
| 520 | return -1; |
| 521 | |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 522 | msg = mtp_msg_alloc(link); |
| 523 | if (!msg) |
| 524 | return -1; |
| 525 | |
| 526 | hdr = (struct mtp_level_3_hdr *) msg->l2h; |
Holger Hans Peter Freyther | 3aad776 | 2010-12-10 12:18:57 +0100 | [diff] [blame] | 527 | hdr->ser_ind = type; |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 528 | |
Holger Hans Peter Freyther | 7a72556 | 2011-01-01 13:34:58 +0100 | [diff] [blame] | 529 | hdr->addr = MTP_ADDR(sls % 16, link->dpc, pc); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 530 | |
| 531 | /* copy the raw sccp data */ |
| 532 | put_ptr = msgb_put(msg, length); |
| 533 | memcpy(put_ptr, data, length); |
| 534 | |
Holger Hans Peter Freyther | 9543f4a | 2011-01-24 20:49:58 +0100 | [diff] [blame] | 535 | mtp_link_submit(link->slc[sls % 16], msg); |
Holger Hans Peter Freyther | 97f66e2 | 2010-07-28 03:32:52 +0800 | [diff] [blame] | 536 | return 0; |
| 537 | } |
Holger Hans Peter Freyther | 069e635 | 2011-01-04 13:01:23 +0100 | [diff] [blame] | 538 | |
Holger Hans Peter Freyther | 0e2f911 | 2011-01-17 11:54:39 +0100 | [diff] [blame] | 539 | static struct mtp_link *find_next_link(struct mtp_link_set *set, |
| 540 | struct mtp_link *data) |
Holger Hans Peter Freyther | d91f940 | 2011-01-16 11:56:05 +0100 | [diff] [blame] | 541 | { |
| 542 | int found = 0; |
Holger Hans Peter Freyther | 0e2f911 | 2011-01-17 11:54:39 +0100 | [diff] [blame] | 543 | struct mtp_link *next; |
Holger Hans Peter Freyther | d91f940 | 2011-01-16 11:56:05 +0100 | [diff] [blame] | 544 | |
| 545 | if (llist_empty(&set->links)) |
| 546 | return NULL; |
| 547 | |
| 548 | if (data == NULL) |
| 549 | found = 1; |
| 550 | |
| 551 | /* try to find the next one */ |
| 552 | llist_for_each_entry(next, &set->links, entry) { |
| 553 | if (found && next->available) |
| 554 | return next; |
| 555 | if (next == data) |
| 556 | found = 1; |
| 557 | } |
| 558 | |
| 559 | /* try to find any one */ |
| 560 | llist_for_each_entry(next, &set->links, entry) |
| 561 | if (next->available) |
| 562 | return next; |
| 563 | |
| 564 | return NULL; |
| 565 | } |
| 566 | |
Holger Hans Peter Freyther | 069e635 | 2011-01-04 13:01:23 +0100 | [diff] [blame] | 567 | void mtp_link_set_init_slc(struct mtp_link_set *set) |
| 568 | { |
Holger Hans Peter Freyther | 1ec2a74 | 2011-01-25 13:24:06 +0100 | [diff] [blame] | 569 | struct mtp_link *link = NULL, *tmp; |
Holger Hans Peter Freyther | 069e635 | 2011-01-04 13:01:23 +0100 | [diff] [blame] | 570 | int i; |
Holger Hans Peter Freyther | d91f940 | 2011-01-16 11:56:05 +0100 | [diff] [blame] | 571 | |
Holger Hans Peter Freyther | 1ec2a74 | 2011-01-25 13:24:06 +0100 | [diff] [blame] | 572 | llist_for_each_entry(tmp, &set->links, entry) |
| 573 | tmp->first_sls = 100; |
| 574 | |
Holger Hans Peter Freyther | d91f940 | 2011-01-16 11:56:05 +0100 | [diff] [blame] | 575 | |
| 576 | for (i = 0; i < ARRAY_SIZE(set->slc); ++i) { |
| 577 | link = find_next_link(set, link); |
| 578 | set->slc[i] = link; |
Holger Hans Peter Freyther | 1ec2a74 | 2011-01-25 13:24:06 +0100 | [diff] [blame] | 579 | |
| 580 | if (link && i < link->first_sls) |
| 581 | link->first_sls = i; |
Holger Hans Peter Freyther | d91f940 | 2011-01-16 11:56:05 +0100 | [diff] [blame] | 582 | } |
Holger Hans Peter Freyther | fe72c16 | 2011-01-04 13:21:52 +0100 | [diff] [blame] | 583 | } |
| 584 | |
Holger Hans Peter Freyther | 4c1eb0e | 2011-01-22 15:52:07 +0100 | [diff] [blame] | 585 | int mtp_link_set_add_link(struct mtp_link_set *set, struct mtp_link *lnk) |
Holger Hans Peter Freyther | fe72c16 | 2011-01-04 13:21:52 +0100 | [diff] [blame] | 586 | { |
Holger Hans Peter Freyther | 2d845fc | 2011-01-20 15:42:13 +0100 | [diff] [blame] | 587 | lnk->set = set; |
Holger Hans Peter Freyther | 1cc2456 | 2011-01-20 18:26:18 +0100 | [diff] [blame] | 588 | lnk->link_no = set->nr_links++; |
Holger Hans Peter Freyther | 4c1eb0e | 2011-01-22 15:52:07 +0100 | [diff] [blame] | 589 | if (mtp_link_init(lnk) != 0) |
| 590 | return -1; |
Holger Hans Peter Freyther | a8ce061 | 2011-01-20 16:30:24 +0100 | [diff] [blame] | 591 | |
| 592 | llist_add_tail(&lnk->entry, &set->links); |
Holger Hans Peter Freyther | fe72c16 | 2011-01-04 13:21:52 +0100 | [diff] [blame] | 593 | mtp_link_set_init_slc(set); |
Holger Hans Peter Freyther | 4c1eb0e | 2011-01-22 15:52:07 +0100 | [diff] [blame] | 594 | return 0; |
Holger Hans Peter Freyther | 069e635 | 2011-01-04 13:01:23 +0100 | [diff] [blame] | 595 | } |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 596 | |
| 597 | struct mtp_link_set *mtp_link_set_alloc(struct bsc_data *bsc) |
| 598 | { |
| 599 | struct mtp_link_set *link; |
| 600 | |
| 601 | link = talloc_zero(bsc, struct mtp_link_set); |
| 602 | if (!link) |
| 603 | return NULL; |
| 604 | |
| 605 | link->ctrg = rate_ctr_group_alloc(link, |
| 606 | mtp_link_set_rate_ctr_desc(), |
| 607 | bsc->num_linksets + 1); |
| 608 | if (!link->ctrg) { |
| 609 | LOGP(DINP, LOGL_ERROR, "Failed to allocate counter.\n"); |
| 610 | return NULL; |
| 611 | } |
| 612 | |
| 613 | |
| 614 | link->ni = MTP_NI_NATION_NET; |
| 615 | INIT_LLIST_HEAD(&link->links); |
| 616 | |
Holger Hans Peter Freyther | a33b23f | 2011-02-16 23:37:40 +0100 | [diff] [blame] | 617 | link->nr = bsc->num_linksets++; |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 618 | llist_add(&link->entry, &bsc->linksets); |
| 619 | |
| 620 | return link; |
| 621 | } |
| 622 | |
| 623 | struct mtp_link_set *mtp_link_set_num(struct bsc_data *bsc, int num) |
| 624 | { |
| 625 | struct mtp_link_set *set; |
| 626 | |
| 627 | llist_for_each_entry(set, &bsc->linksets, entry) |
Holger Hans Peter Freyther | a33b23f | 2011-02-16 23:37:40 +0100 | [diff] [blame] | 628 | if (set->nr == num) |
Holger Hans Peter Freyther | 694337f | 2011-02-15 11:24:05 +0100 | [diff] [blame] | 629 | return set; |
| 630 | |
| 631 | return NULL; |
| 632 | } |