cellular-infrastructure
/
osmo-bsc
mirror of https://gerrit.osmocom.org/osmo-bsc
9
0
Fork 0
Code Issues Releases Wiki Activity

nat: Introduce the concept of a paging group and use it 

A paging group is a list of LACs, different BSCs can point
to a paging group and use it for the LAC lookup.
This commit is contained in:
Holger Hans Peter Freyther 2011-05-02 16:50:36 +02:00
parent 1ffe98c175
commit 474698abef
2 changed files with 38 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
openbsc/include/openbsc/bsc_nat.h
View File

@ -38,6 +38,8 @@
#define DIR_BSC 1
#define DIR_MSC 2
#define PAGIN_GROUP_UNASSIGNED -1
struct sccp_source_reference;
struct sccp_connections;
struct bsc_nat_parsed;
@ -134,6 +136,7 @@ struct bsc_config {
char *acc_lst_name;
int forbid_paging;
int paging_group;
/* audio handling */
int max_endpoints;
@ -151,6 +154,14 @@ struct bsc_lac_entry {
uint16_t lac;
};
struct bsc_nat_paging_group {
struct llist_head entry;
/* list of lac entries */
struct llist_head lists;
int nr;
};
/**
* BSCs point of view of endpoints
*/
@ -225,6 +236,9 @@ struct bsc_nat {
/* access lists */
struct llist_head access_lists;
/* paging groups */
struct llist_head paging_groups;
/* known BSC's */
struct llist_head bsc_configs;
int num_bsc;

24
openbsc/src/osmo-bsc_nat/bsc_nat_utils.c
View File

@ -90,6 +90,7 @@ struct bsc_nat *bsc_nat_alloc(void)
INIT_LLIST_HEAD(&nat->sccp_connections);
INIT_LLIST_HEAD(&nat->bsc_connections);
INIT_LLIST_HEAD(&nat->paging_groups);
INIT_LLIST_HEAD(&nat->bsc_configs);
INIT_LLIST_HEAD(&nat->access_lists);
INIT_LLIST_HEAD(&nat->dests);
@ -137,6 +138,7 @@ struct bsc_config *bsc_config_alloc(struct bsc_nat *nat, const char *token)
conf->nr = nat->num_bsc;
conf->nat = nat;
conf->max_endpoints = 32;
conf->paging_group = PAGIN_GROUP_UNASSIGNED;
INIT_LLIST_HEAD(&conf->lac_list);
@ -187,14 +189,36 @@ void bsc_config_del_lac(struct bsc_config *cfg, int _lac)
}
}
static struct bsc_nat_paging_group *bsc_nat_paging_group_num(
struct bsc_nat *nat, int group)
{
struct bsc_nat_paging_group *pgroup;
llist_for_each_entry(pgroup, &nat->paging_groups, entry)
if (pgroup->nr == group)
return pgroup;
return NULL;
}
int bsc_config_handles_lac(struct bsc_config *cfg, int lac_nr)
{
struct bsc_nat_paging_group *pgroup;
struct bsc_lac_entry *entry;
llist_for_each_entry(entry, &cfg->lac_list, entry)
if (entry->lac == lac_nr)
return 1;
/* now lookup the paging group */
pgroup = bsc_nat_paging_group_num(cfg->nat, cfg->paging_group);
if (!pgroup)
return 0;
llist_for_each_entry(entry, &pgroup->lists, entry)
if (entry->lac == lac_nr)
return 1;
return 0;
}