diff options
-rw-r--r-- | include/openbsc/Makefile.am | 2 | ||||
-rw-r--r-- | include/openbsc/paging.h | 61 | ||||
-rw-r--r-- | src/Makefile.am | 2 | ||||
-rw-r--r-- | src/paging.c | 83 |
4 files changed, 146 insertions, 2 deletions
diff --git a/include/openbsc/Makefile.am b/include/openbsc/Makefile.am index f1f163b2a..d3be438a4 100644 --- a/include/openbsc/Makefile.am +++ b/include/openbsc/Makefile.am @@ -1,3 +1,3 @@ noinst_HEADERS = abis_nm.h abis_rsl.h debug.h db.h gsm_04_08.h gsm_data.h \ gsm_subscriber.h linuxlist.h msgb.h select.h tlv.h gsm_04_11.h \ - timer.h misdn.h chan_alloc.h telnet_interface.h + timer.h misdn.h chan_alloc.h telnet_interface.h paging.h diff --git a/include/openbsc/paging.h b/include/openbsc/paging.h new file mode 100644 index 000000000..93137fccd --- /dev/null +++ b/include/openbsc/paging.h @@ -0,0 +1,61 @@ +/* Paging helper and manager.... */ +/* (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org> + * All Rights Reserved + * + * 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., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + +#ifndef PAGING_H +#define PAGING_H + +#include <malloc.h> +#include <string.h> + +#include "linuxlist.h" +#include "gsm_data.h" +#include "gsm_subscriber.h" + +/** + * A pending paging request + */ +struct paging_request { + struct llist_head entry; + struct gsm_subscriber *subscr; + struct gsm_bts *bts; +}; + +/* + * struct for each bts we serve... + */ +struct paging_bts { + /* public callbacks */ + void (*channel_allocated)(struct gsm_lchan *lchan); + + /* list for each bts */ + struct llist_head bts_list; + + /* pending requests */ + struct llist_head pending_requests; + struct gsm_bts *bts; +}; + +/* call once for every gsm_bts... */ +struct paging_bts* page_allocate(struct gsm_bts *bts); + +/* schedule paging request */ +void page_request(struct gsm_bts *bts, struct gsm_subscriber *subscr); + +#endif diff --git a/src/Makefile.am b/src/Makefile.am index 0e200c3a1..1775997e2 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -6,5 +6,5 @@ sbin_PROGRAMS = bsc_hack bsc_hack_SOURCES = bsc_hack.c misdn.c abis_rsl.c abis_nm.c gsm_04_08.c gsm_data.c \ gsm_subscriber.c msgb.c select.c chan_alloc.c timer.c debug.c db.c \ gsm_04_11.c telnet_interface.c telnet_parser.l subchan_demux.c \ - trau_frame.c + trau_frame.c paging.c bsc_hack_LDADD = -ldl -ldbi diff --git a/src/paging.c b/src/paging.c new file mode 100644 index 000000000..5578130de --- /dev/null +++ b/src/paging.c @@ -0,0 +1,83 @@ +/* Paging helper and manager.... */ +/* (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org> + * All Rights Reserved + * + * 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., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + +/* + * Relevant specs: + * 12.21: + * - 9.4.12 for CCCH Local Threshold + * + * 05.58: + * - 8.5.2 CCCH Load indication + * - 9.3.15 Paging Load + * + * Approach: + * - Send paging command to subscriber + * - On Channel Request we will remember the reason + * - After the ACK we will request the identity + * - Then we will send assign the gsm_subscriber and + * - and call a callback + */ + +#include <openbsc/paging.h> +#include <openbsc/debug.h> + +static LLIST_HEAD(managed_bts); + +static int page_pending_request(struct paging_bts *bts, + struct gsm_subscriber *subscr) { + struct paging_request *req; + + llist_for_each_entry(req, &bts->pending_requests, entry) { + if (subscr == req->subscr) + return 1; + } + + return 0; +} + +struct paging_bts* page_allocate(struct gsm_bts *bts) { + struct paging_bts *page; + + page = (struct paging_bts *)malloc(sizeof(*page)); + memset(page, 0, sizeof(*page)); + llist_add_tail(&page->bts_list, &managed_bts); + + return page; +} + +void page_request(struct gsm_bts *bts, struct gsm_subscriber *subscr) { + struct paging_bts *bts_entry; + struct paging_request *req; + + req = (struct paging_request *)malloc(sizeof(*req)); + req->subscr = subscr_get(subscr); + req->bts = bts; + + llist_for_each_entry(bts_entry, &managed_bts, bts_list) { + if (bts == bts_entry->bts && !page_pending_request(bts_entry, subscr)) { + llist_add_tail(&req->entry, &bts_entry->pending_requests); + return; + } + } + + DEBUGP(DPAG, "Paging request for not mnaged BTS\n"); + free(req); + return; +} |