| /* gprs_ms_storage.cpp |
| * |
| * Copyright (C) 2015 by Sysmocom s.f.m.c. GmbH |
| * Author: Jacob Erlbeck <jerlbeck@sysmocom.de> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| */ |
| |
| |
| #include "gprs_ms_storage.h" |
| |
| #include "tbf.h" |
| #include "bts.h" |
| |
| extern "C" { |
| #include <osmocom/core/linuxlist.h> |
| #include <osmocom/gsm/gsm48.h> |
| } |
| |
| #define GPRS_UNDEFINED_IMSI "000" |
| |
| static void ms_storage_ms_idle_cb(struct GprsMs *ms) |
| { |
| llist_del(&ms->list); |
| if (ms->bts) |
| bts_stat_item_add(ms->bts, STAT_MS_PRESENT, -1); |
| if (ms_is_idle(ms)) |
| talloc_free(ms); |
| } |
| |
| static void ms_storage_ms_active_cb(struct GprsMs *ms) |
| { |
| /* Nothing to do */ |
| } |
| |
| static struct gpr_ms_callback ms_storage_ms_cb = { |
| .ms_idle = ms_storage_ms_idle_cb, |
| .ms_active = ms_storage_ms_active_cb, |
| }; |
| |
| GprsMsStorage::GprsMsStorage(struct gprs_rlcmac_bts *bts) : |
| m_bts(bts) |
| { |
| INIT_LLIST_HEAD(&m_list); |
| } |
| |
| GprsMsStorage::~GprsMsStorage() |
| { |
| cleanup(); |
| } |
| |
| void GprsMsStorage::cleanup() |
| { |
| struct llist_head *pos, *tmp; |
| |
| llist_for_each_safe(pos, tmp, &m_list) { |
| struct GprsMs *ms = llist_entry(pos, typeof(*ms), list); |
| ms_set_callback(ms, NULL); |
| ms_storage_ms_idle_cb(ms); |
| } |
| } |
| |
| GprsMs *GprsMsStorage::get_ms(uint32_t tlli, uint32_t old_tlli, const char *imsi) const |
| { |
| struct llist_head *tmp; |
| GprsMs *ms; |
| |
| if (tlli != GSM_RESERVED_TMSI || old_tlli != GSM_RESERVED_TMSI) { |
| llist_for_each(tmp, &m_list) { |
| ms = llist_entry(tmp, typeof(*ms), list); |
| if (ms_check_tlli(ms, tlli)) |
| return ms; |
| if (ms_check_tlli(ms, old_tlli)) |
| return ms; |
| } |
| } |
| |
| /* not found by TLLI */ |
| |
| if (imsi && imsi[0] && strcmp(imsi, GPRS_UNDEFINED_IMSI) != 0) { |
| llist_for_each(tmp, &m_list) { |
| ms = llist_entry(tmp, typeof(*ms), list); |
| if (strcmp(imsi, ms_imsi(ms)) == 0) |
| return ms; |
| } |
| } |
| |
| return NULL; |
| } |
| |
| GprsMs *GprsMsStorage::create_ms() |
| { |
| GprsMs *ms; |
| |
| ms = ms_alloc(m_bts, GSM_RESERVED_TMSI); |
| |
| ms_set_callback(ms, &ms_storage_ms_cb); |
| llist_add(&ms->list, &m_list); |
| if (m_bts) |
| bts_stat_item_add(m_bts, STAT_MS_PRESENT, 1); |
| |
| return ms; |
| } |