bts: Use ms_store when calculating set of target PDCHs for Pkt Paging Request
The ul_tbfs/dl_tbfs lists will become per-trx. Since in this case we want to operate on the BTS globally, let's iterate over MS objects instead. This makes more sense too since here we really aim at reaching a MS (subscriber) instead of specific TBFs. Later on the code can be optimized easily to schedule a Pkt Paging Request for only 1 of the TBFs of each MS instad of scheduling it for each TBFs in the MS. Change-Id: I671e531921bbea2f5cc0f2bfcb8a39ea5c6673b8
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21
src/bts.cpp
21
src/bts.cpp
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@ -373,17 +373,11 @@ int bts_add_paging(struct gprs_rlcmac_bts *bts, const struct paging_req_cs *req,
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{
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uint8_t l, trx, ts, any_tbf = 0;
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struct gprs_rlcmac_tbf *tbf;
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struct llist_item *pos;
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struct llist_head *tmp;
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const struct osmo_mobile_identity *mi;
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uint8_t slot_mask[8];
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int8_t first_ts; /* must be signed */
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struct llist_head *tbfs_lists[] = {
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&bts->ul_tbfs,
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&bts->dl_tbfs,
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NULL
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};
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/* First, build the MI used to page on PDCH from available subscriber info: */
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if (req->mi_tmsi_present) {
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mi = &req->mi_tmsi;
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@ -409,13 +403,18 @@ int bts_add_paging(struct gprs_rlcmac_bts *bts, const struct paging_req_cs *req,
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/* We don't know the target MS.
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* collect slots to page
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* Mark slots for every TBF, but only mark one of it.
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* Mark up to one slot attached to each of the TBF of the MS.
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* Mark only the first slot found.
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* Don't mark, if TBF uses a different slot that is already marked. */
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memset(slot_mask, 0, sizeof(slot_mask));
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for (l = 0; tbfs_lists[l]; l++) {
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llist_for_each_entry(pos, tbfs_lists[l], list) {
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tbf = (struct gprs_rlcmac_tbf *)pos->entry;
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llist_for_each(tmp, bts_ms_store(bts)->ms_list()) {
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ms = llist_entry(tmp, typeof(*ms), list);
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struct gprs_rlcmac_tbf *tbfs[] = { ms->ul_tbf, ms->dl_tbf };
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for (l = 0; l < ARRAY_SIZE(tbfs); l++) {
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tbf = (struct gprs_rlcmac_tbf *)tbfs[l];
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if (!tbf)
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continue;
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first_ts = -1;
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for (ts = 0; ts < 8; ts++) {
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if (tbf->pdch[ts]) {
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