diff options
Diffstat (limited to 'openbsc/src/paging.c')
| -rw-r--r-- | openbsc/src/paging.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/openbsc/src/paging.c b/openbsc/src/paging.c index a6bc56d2a..bca97cf87 100644 --- a/openbsc/src/paging.c +++ b/openbsc/src/paging.c @@ -118,6 +118,45 @@ static void paging_give_credit(void *data) paging_handle_pending_requests(paging_bts); } +static int can_send_pag_req(struct gsm_bts *bts, int rsl_type) +{ + struct pchan_load pl; + int count; + + memset(&pl, 0, sizeof(pl)); + bts_chan_load(&pl, bts); + + switch (rsl_type) { + case RSL_CHANNEED_TCH_F: + LOGP(DPAG, LOGL_ERROR, "Not implemented.\n"); + break; + case RSL_CHANNEED_TCH_ForH: + LOGP(DPAG, LOGL_ERROR, "Not implemented.\n"); + break; + case RSL_CHANNEED_SDCCH: + goto count_sdcch; + break; + case RSL_CHANNEED_ANY: + default: + if (bts->network->pag_any_tch) + LOGP(DPAG, LOGL_ERROR, "Not implemented.\n"); + else + goto count_sdcch; + break; + } + + return 0; + + /* could available SDCCH */ +count_sdcch: + count = 0; + count += pl.pchan[GSM_PCHAN_SDCCH8_SACCH8C].total + - pl.pchan[GSM_PCHAN_SDCCH8_SACCH8C].used; + count += pl.pchan[GSM_PCHAN_CCCH_SDCCH4].total + - pl.pchan[GSM_PCHAN_CCCH_SDCCH4].used; + return bts->paging.free_chans_need > count; +} + /* * This is kicked by the periodic PAGING LOAD Indicator * coming from abis_rsl.c @@ -154,6 +193,12 @@ static void paging_handle_pending_requests(struct gsm_bts_paging_state *paging_b request = llist_entry(paging_bts->pending_requests.next, struct gsm_paging_request, entry); + /* we need to determine the number of free channels */ + if (paging_bts->free_chans_need != -1) { + if (can_send_pag_req(request->bts, request->chan_type) != 0) + goto skip_paging; + } + /* handle the paging request now */ page_ms(request); paging_bts->available_slots--; @@ -162,6 +207,7 @@ static void paging_handle_pending_requests(struct gsm_bts_paging_state *paging_b llist_del(&request->entry); llist_add_tail(&request->entry, &paging_bts->pending_requests); +skip_paging: bsc_schedule_timer(&paging_bts->work_timer, PAGING_TIMER); } |