Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 by Holger Hans Peter Freyther |
| 3 | * |
| 4 | * All Rights Reserved |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU Affero General Public License as published by |
| 8 | * the Free Software Foundation; either version 3 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Affero General Public License |
| 17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 18 | * |
| 19 | */ |
| 20 | |
| 21 | #include <bts.h> |
Holger Hans Peter Freyther | b78adcd | 2013-10-17 20:12:37 +0200 | [diff] [blame] | 22 | #include <poll_controller.h> |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 23 | #include <tbf.h> |
Holger Hans Peter Freyther | 63f29d6 | 2013-10-19 19:04:03 +0200 | [diff] [blame] | 24 | #include <encoding.h> |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 25 | |
| 26 | #include <gprs_rlcmac.h> |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 27 | #include <gprs_debug.h> |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 28 | |
| 29 | extern "C" { |
| 30 | #include <osmocom/core/talloc.h> |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 31 | #include <osmocom/core/msgb.h> |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 32 | } |
Holger Hans Peter Freyther | b78adcd | 2013-10-17 20:12:37 +0200 | [diff] [blame] | 33 | |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 34 | #include <arpa/inet.h> |
| 35 | |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 36 | #include <errno.h> |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 37 | #include <string.h> |
| 38 | |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 39 | extern void *tall_pcu_ctx; |
| 40 | |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 41 | static BTS s_bts; |
| 42 | |
| 43 | BTS* BTS::main_bts() |
| 44 | { |
| 45 | return &s_bts; |
| 46 | } |
| 47 | |
| 48 | struct gprs_rlcmac_bts *BTS::bts_data() |
| 49 | { |
| 50 | return &m_bts; |
| 51 | } |
| 52 | |
| 53 | struct gprs_rlcmac_bts *bts_main_data() |
| 54 | { |
| 55 | return BTS::main_bts()->bts_data(); |
| 56 | } |
| 57 | |
| 58 | BTS::BTS() |
Holger Hans Peter Freyther | 9b30c7f | 2013-10-17 19:59:56 +0200 | [diff] [blame] | 59 | : m_cur_fn(0) |
Holger Hans Peter Freyther | b78adcd | 2013-10-17 20:12:37 +0200 | [diff] [blame] | 60 | , m_pollController(*this) |
Holger Hans Peter Freyther | cedf890 | 2013-10-19 20:47:12 +0200 | [diff] [blame] | 61 | , m_sba(*this) |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 62 | { |
| 63 | memset(&m_bts, 0, sizeof(m_bts)); |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 64 | INIT_LLIST_HEAD(&m_bts.ul_tbfs); |
| 65 | INIT_LLIST_HEAD(&m_bts.dl_tbfs); |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 66 | m_bts.bts = this; |
Holger Hans Peter Freyther | 4ed1dae | 2013-10-20 10:14:03 +0200 | [diff] [blame] | 67 | |
| 68 | /* initialize back pointers */ |
| 69 | for (size_t trx_no = 0; trx_no < ARRAY_SIZE(m_bts.trx); ++trx_no) { |
| 70 | struct gprs_rlcmac_trx *trx = &m_bts.trx[trx_no]; |
| 71 | trx->trx_no = trx_no; |
| 72 | trx->bts = this; |
| 73 | |
| 74 | for (size_t ts_no = 0; ts_no < ARRAY_SIZE(trx->pdch); ++ts_no) { |
| 75 | struct gprs_rlcmac_pdch *pdch = &trx->pdch[ts_no]; |
| 76 | pdch->ts_no = ts_no; |
| 77 | pdch->trx = trx; |
| 78 | } |
| 79 | } |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 80 | } |
Holger Hans Peter Freyther | 9b30c7f | 2013-10-17 19:59:56 +0200 | [diff] [blame] | 81 | |
| 82 | void BTS::set_current_frame_number(int fn) |
| 83 | { |
| 84 | m_cur_fn = fn; |
Holger Hans Peter Freyther | b78adcd | 2013-10-17 20:12:37 +0200 | [diff] [blame] | 85 | m_pollController.expireTimedout(m_cur_fn); |
Holger Hans Peter Freyther | 9b30c7f | 2013-10-17 19:59:56 +0200 | [diff] [blame] | 86 | } |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 87 | |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 88 | int BTS::add_paging(uint8_t chan_needed, uint8_t *identity_lv) |
| 89 | { |
| 90 | uint8_t l, trx, ts, any_tbf = 0; |
| 91 | struct gprs_rlcmac_tbf *tbf; |
| 92 | struct gprs_rlcmac_paging *pag; |
| 93 | uint8_t slot_mask[8]; |
| 94 | int8_t first_ts; /* must be signed */ |
| 95 | |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 96 | llist_head *tbfs_lists[] = { |
| 97 | &m_bts.ul_tbfs, |
| 98 | &m_bts.dl_tbfs, |
| 99 | NULL |
| 100 | }; |
| 101 | |
| 102 | |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 103 | LOGP(DRLCMAC, LOGL_INFO, "Add RR paging: chan-needed=%d MI=%s\n", |
| 104 | chan_needed, osmo_hexdump(identity_lv + 1, identity_lv[0])); |
| 105 | |
| 106 | /* collect slots to page |
| 107 | * Mark slots for every TBF, but only mark one of it. |
| 108 | * Mark only the first slot found. |
| 109 | * Don't mark, if TBF uses a different slot that is already marked. */ |
| 110 | memset(slot_mask, 0, sizeof(slot_mask)); |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 111 | for (l = 0; tbfs_lists[l]; l++) { |
| 112 | llist_for_each_entry(tbf, tbfs_lists[l], list) { |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 113 | first_ts = -1; |
| 114 | for (ts = 0; ts < 8; ts++) { |
| 115 | if (tbf->pdch[ts]) { |
| 116 | /* remember the first slot found */ |
| 117 | if (first_ts < 0) |
| 118 | first_ts = ts; |
| 119 | /* break, if we already marked a slot */ |
| 120 | if ((slot_mask[tbf->trx_no] & (1 << ts))) |
| 121 | break; |
| 122 | } |
| 123 | } |
| 124 | /* mark first slot found, if none is marked already */ |
| 125 | if (ts == 8 && first_ts >= 0) { |
| 126 | LOGP(DRLCMAC, LOGL_DEBUG, "- %s TBF=%d uses " |
| 127 | "TRX=%d TS=%d, so we mark\n", |
| 128 | (tbf->direction == GPRS_RLCMAC_UL_TBF) |
| 129 | ? "UL" : "DL", |
| 130 | tbf->tfi, tbf->trx_no, first_ts); |
| 131 | slot_mask[tbf->trx_no] |= (1 << first_ts); |
| 132 | } else |
| 133 | LOGP(DRLCMAC, LOGL_DEBUG, "- %s TBF=%d uses " |
| 134 | "already marked TRX=%d TS=%d\n", |
| 135 | (tbf->direction == GPRS_RLCMAC_UL_TBF) |
| 136 | ? "UL" : "DL", |
| 137 | tbf->tfi, tbf->trx_no, ts); |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | /* Now we have a list of marked slots. Every TBF uses at least one |
| 142 | * of these slots. */ |
| 143 | |
| 144 | /* schedule paging to all marked slots */ |
| 145 | for (trx = 0; trx < 8; trx++) { |
| 146 | if (slot_mask[trx] == 0) |
| 147 | continue; |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 148 | for (ts = 0; ts < 8; ts++) { |
| 149 | if ((slot_mask[trx] & (1 << ts))) { |
| 150 | /* schedule */ |
| 151 | pag = talloc_zero(tall_pcu_ctx, |
| 152 | struct gprs_rlcmac_paging); |
| 153 | if (!pag) |
| 154 | return -ENOMEM; |
| 155 | pag->chan_needed = chan_needed; |
| 156 | memcpy(pag->identity_lv, identity_lv, |
| 157 | identity_lv[0] + 1); |
| 158 | m_bts.trx[trx].pdch[ts].add_paging(pag); |
| 159 | LOGP(DRLCMAC, LOGL_INFO, "Paging on PACCH of " |
| 160 | "TRX=%d TS=%d\n", trx, ts); |
Holger Hans Peter Freyther | 9446485 | 2013-10-19 18:33:52 +0200 | [diff] [blame] | 161 | any_tbf = 1; |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 162 | } |
| 163 | } |
| 164 | } |
| 165 | |
| 166 | if (!any_tbf) |
| 167 | LOGP(DRLCMAC, LOGL_INFO, "No paging, because no TBF\n"); |
| 168 | |
| 169 | return 0; |
| 170 | } |
| 171 | |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 172 | /* search for active downlink or uplink tbf */ |
| 173 | gprs_rlcmac_tbf *BTS::tbf_by_tlli(uint32_t tlli, enum gprs_rlcmac_tbf_direction dir) |
| 174 | { |
| 175 | struct gprs_rlcmac_tbf *tbf; |
| 176 | if (dir == GPRS_RLCMAC_UL_TBF) { |
| 177 | llist_for_each_entry(tbf, &m_bts.ul_tbfs, list) { |
| 178 | if (tbf->state_is_not(GPRS_RLCMAC_RELEASING) |
| 179 | && tbf->tlli == tlli && tbf->tlli_valid) |
| 180 | return tbf; |
| 181 | } |
| 182 | } else { |
| 183 | llist_for_each_entry(tbf, &m_bts.dl_tbfs, list) { |
| 184 | if (tbf->state_is_not(GPRS_RLCMAC_RELEASING) |
| 185 | && tbf->tlli == tlli) |
| 186 | return tbf; |
| 187 | } |
| 188 | } |
| 189 | return NULL; |
| 190 | } |
| 191 | |
| 192 | gprs_rlcmac_tbf *BTS::tbf_by_poll_fn(uint32_t fn, uint8_t trx, uint8_t ts) |
| 193 | { |
| 194 | struct gprs_rlcmac_tbf *tbf; |
| 195 | |
| 196 | /* only one TBF can poll on specific TS/FN, because scheduler can only |
| 197 | * schedule one downlink control block (with polling) at a FN per TS */ |
| 198 | llist_for_each_entry(tbf, &m_bts.ul_tbfs, list) { |
| 199 | if (tbf->state_is_not(GPRS_RLCMAC_RELEASING) |
| 200 | && tbf->poll_state == GPRS_RLCMAC_POLL_SCHED |
| 201 | && tbf->poll_fn == fn && tbf->trx_no == trx |
| 202 | && tbf->control_ts == ts) |
| 203 | return tbf; |
| 204 | } |
| 205 | llist_for_each_entry(tbf, &m_bts.dl_tbfs, list) { |
| 206 | if (tbf->state_is_not(GPRS_RLCMAC_RELEASING) |
| 207 | && tbf->poll_state == GPRS_RLCMAC_POLL_SCHED |
| 208 | && tbf->poll_fn == fn && tbf->trx_no == trx |
| 209 | && tbf->control_ts == ts) |
| 210 | return tbf; |
| 211 | } |
| 212 | return NULL; |
| 213 | } |
| 214 | |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 215 | void gprs_rlcmac_pdch::enable() |
| 216 | { |
| 217 | /* TODO: Check if there are still allocated resources.. */ |
| 218 | INIT_LLIST_HEAD(&paging_list); |
| 219 | m_is_enabled = 1; |
| 220 | } |
| 221 | |
| 222 | void gprs_rlcmac_pdch::disable() |
| 223 | { |
| 224 | /* TODO.. kick free_resources once we know the TRX/TS we are on */ |
| 225 | m_is_enabled = 0; |
| 226 | } |
| 227 | |
Holger Hans Peter Freyther | cedf890 | 2013-10-19 20:47:12 +0200 | [diff] [blame] | 228 | /* TODO: kill the parameter and make a pdch belong to a trx.. to a bts.. */ |
Holger Hans Peter Freyther | 09ef27a | 2013-10-20 16:37:05 +0200 | [diff] [blame] | 229 | void gprs_rlcmac_pdch::free_resources() |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 230 | { |
| 231 | struct gprs_rlcmac_paging *pag; |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 232 | |
| 233 | /* we are not enabled. there should be no resources */ |
| 234 | if (!is_enabled()) |
| 235 | return; |
| 236 | |
| 237 | /* kick all TBF on slot */ |
| 238 | gprs_rlcmac_tbf::free_all(this); |
| 239 | |
| 240 | /* flush all pending paging messages */ |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 241 | while ((pag = dequeue_paging())) |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 242 | talloc_free(pag); |
| 243 | |
Holger Hans Peter Freyther | 09ef27a | 2013-10-20 16:37:05 +0200 | [diff] [blame] | 244 | trx->bts->sba()->free_resources(this); |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 245 | } |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 246 | |
| 247 | struct gprs_rlcmac_paging *gprs_rlcmac_pdch::dequeue_paging() |
| 248 | { |
| 249 | struct gprs_rlcmac_paging *pag; |
| 250 | |
| 251 | if (llist_empty(&paging_list)) |
| 252 | return NULL; |
| 253 | pag = llist_entry(paging_list.next, struct gprs_rlcmac_paging, list); |
| 254 | llist_del(&pag->list); |
| 255 | |
| 256 | return pag; |
| 257 | } |
| 258 | |
| 259 | struct msgb *gprs_rlcmac_pdch::packet_paging_request() |
| 260 | { |
| 261 | struct gprs_rlcmac_paging *pag; |
| 262 | struct msgb *msg; |
| 263 | unsigned wp = 0, len; |
| 264 | |
| 265 | /* no paging, no message */ |
| 266 | pag = dequeue_paging(); |
| 267 | if (!pag) |
| 268 | return NULL; |
| 269 | |
| 270 | LOGP(DRLCMAC, LOGL_DEBUG, "Scheduling paging\n"); |
| 271 | |
| 272 | /* alloc message */ |
| 273 | msg = msgb_alloc(23, "pag ctrl block"); |
| 274 | if (!msg) { |
| 275 | talloc_free(pag); |
| 276 | return NULL; |
| 277 | } |
| 278 | bitvec *pag_vec = bitvec_alloc(23); |
| 279 | if (!pag_vec) { |
| 280 | msgb_free(msg); |
| 281 | talloc_free(pag); |
| 282 | return NULL; |
| 283 | } |
Holger Hans Peter Freyther | 63f29d6 | 2013-10-19 19:04:03 +0200 | [diff] [blame] | 284 | wp = Encoding::write_packet_paging_request(pag_vec); |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 285 | |
| 286 | /* loop until message is full */ |
| 287 | while (pag) { |
| 288 | /* try to add paging */ |
| 289 | if ((pag->identity_lv[1] & 0x07) == 4) { |
| 290 | /* TMSI */ |
| 291 | LOGP(DRLCMAC, LOGL_DEBUG, "- TMSI=0x%08x\n", |
| 292 | ntohl(*((uint32_t *)(pag->identity_lv + 1)))); |
| 293 | len = 1 + 1 + 1 + 32 + 2 + 1; |
| 294 | if (pag->identity_lv[0] != 5) { |
| 295 | LOGP(DRLCMAC, LOGL_ERROR, "TMSI paging with " |
| 296 | "MI != 5 octets!\n"); |
| 297 | goto continue_next; |
| 298 | } |
| 299 | } else { |
| 300 | /* MI */ |
| 301 | LOGP(DRLCMAC, LOGL_DEBUG, "- MI=%s\n", |
| 302 | osmo_hexdump(pag->identity_lv + 1, |
| 303 | pag->identity_lv[0])); |
| 304 | len = 1 + 1 + 1 + 4 + (pag->identity_lv[0]<<3) + 2 + 1; |
| 305 | if (pag->identity_lv[0] > 8) { |
| 306 | LOGP(DRLCMAC, LOGL_ERROR, "Paging with " |
| 307 | "MI > 8 octets!\n"); |
| 308 | goto continue_next; |
| 309 | } |
| 310 | } |
| 311 | if (wp + len > 184) { |
| 312 | LOGP(DRLCMAC, LOGL_DEBUG, "- Does not fit, so schedule " |
| 313 | "next time\n"); |
| 314 | /* put back paging record, because does not fit */ |
| 315 | llist_add_tail(&pag->list, &paging_list); |
| 316 | break; |
| 317 | } |
Holger Hans Peter Freyther | 63f29d6 | 2013-10-19 19:04:03 +0200 | [diff] [blame] | 318 | Encoding::write_repeated_page_info(pag_vec, wp, pag->identity_lv[0], |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 319 | pag->identity_lv + 1, pag->chan_needed); |
| 320 | |
| 321 | continue_next: |
| 322 | talloc_free(pag); |
| 323 | pag = dequeue_paging(); |
| 324 | } |
| 325 | |
| 326 | bitvec_pack(pag_vec, msgb_put(msg, 23)); |
| 327 | RlcMacDownlink_t * mac_control_block = (RlcMacDownlink_t *)talloc_zero(tall_pcu_ctx, RlcMacDownlink_t); |
| 328 | LOGP(DRLCMAC, LOGL_DEBUG, "+++++++++++++++++++++++++ TX : Packet Paging Request +++++++++++++++++++++++++\n"); |
| 329 | decode_gsm_rlcmac_downlink(pag_vec, mac_control_block); |
| 330 | LOGPC(DCSN1, LOGL_NOTICE, "\n"); |
| 331 | LOGP(DRLCMAC, LOGL_DEBUG, "------------------------- TX : Packet Paging Request -------------------------\n"); |
| 332 | bitvec_free(pag_vec); |
| 333 | talloc_free(mac_control_block); |
| 334 | |
| 335 | return msg; |
| 336 | } |
| 337 | |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 338 | void gprs_rlcmac_pdch::add_paging(struct gprs_rlcmac_paging *pag) |
| 339 | { |
| 340 | llist_add(&pag->list, &paging_list); |
| 341 | } |
Holger Hans Peter Freyther | 9ae367f | 2013-10-26 16:42:38 +0200 | [diff] [blame] | 342 | |
Holger Hans Peter Freyther | 6f9f434 | 2013-10-26 16:54:10 +0200 | [diff] [blame^] | 343 | /* received RLC/MAC block from L1 */ |
Holger Hans Peter Freyther | 9ae367f | 2013-10-26 16:42:38 +0200 | [diff] [blame] | 344 | int gprs_rlcmac_pdch::rcv_block(uint8_t *data, uint8_t len, uint32_t fn, int8_t rssi) |
| 345 | { |
Holger Hans Peter Freyther | 6f9f434 | 2013-10-26 16:54:10 +0200 | [diff] [blame^] | 346 | struct gprs_rlcmac_bts *bts = trx->bts->bts_data(); |
| 347 | unsigned payload = data[0] >> 6; |
| 348 | uint8_t trx_no = trx->trx_no; |
| 349 | bitvec *block; |
| 350 | int rc = 0; |
| 351 | |
| 352 | switch (payload) { |
| 353 | case GPRS_RLCMAC_DATA_BLOCK: |
| 354 | rc = gprs_rlcmac_rcv_data_block_acknowledged(bts, trx_no, ts_no, data, |
| 355 | len, rssi); |
| 356 | break; |
| 357 | case GPRS_RLCMAC_CONTROL_BLOCK: |
| 358 | block = bitvec_alloc(len); |
| 359 | if (!block) |
| 360 | return -ENOMEM; |
| 361 | bitvec_unpack(block, data); |
| 362 | rc = gprs_rlcmac_rcv_control_block(bts, block, trx_no, ts_no, fn); |
| 363 | bitvec_free(block); |
| 364 | break; |
| 365 | case GPRS_RLCMAC_CONTROL_BLOCK_OPT: |
| 366 | LOGP(DRLCMAC, LOGL_NOTICE, "GPRS_RLCMAC_CONTROL_BLOCK_OPT block payload is not supported.\n"); |
| 367 | break; |
| 368 | default: |
| 369 | LOGP(DRLCMAC, LOGL_NOTICE, "Unknown RLCMAC block payload(%u).\n", payload); |
| 370 | rc = -EINVAL; |
| 371 | } |
| 372 | |
| 373 | return rc; |
Holger Hans Peter Freyther | 9ae367f | 2013-10-26 16:42:38 +0200 | [diff] [blame] | 374 | } |