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paging: Drop + Log paging requests for non-existant paging groups 

Change-Id: Id02c8fea51c1260f1baae8566c67bafc5bdb970e
Related: OS#2992
This commit is contained in:
Harald Welte 2018-02-24 15:04:47 +01:00
parent d7f8a1c16e
commit 84de287da0
1 changed files with 9 additions and 0 deletions
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src/common/paging.c
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@ -35,6 +35,7 @@
#include <osmocom/gsm/protocol/gsm_04_08.h>
#include <osmocom/gsm/gsm0502.h>
#include <osmocom/gsm/gsm48.h>
#include <osmo-bts/bts.h>
#include <osmo-bts/rsl.h>
@ -177,10 +178,18 @@ int paging_add_identity(struct paging_state *ps, uint8_t paging_group,
const uint8_t *identity_lv, uint8_t chan_needed)
{
struct llist_head *group_q = &ps->paging_queue[paging_group];
int blocks = gsm48_number_of_paging_subchannels(&ps->chan_desc);
struct paging_record *pr;
rate_ctr_inc2(ps->btsb->bts->ctrs, BTS_CTR_PAGING_RCVD);
if (paging_group >= blocks) {
LOGP(DPAG, LOGL_ERROR, "BSC Send PAGING for group %u, but number of paging "
"sub-channels is only %u\n", paging_group, blocks);
rate_ctr_inc2(ps->btsb->bts->ctrs, BTS_CTR_PAGING_DROP);
return -EINVAL;
}
if (ps->num_paging >= ps->num_paging_max) {
LOGP(DPAG, LOGL_NOTICE, "Dropping paging, queue full (%u)\n",
ps->num_paging);