Hello Harald Welte, Jenkins Builder, Holger Freyther,
I'd like you to reexamine a change. Please visit
https://gerrit.osmocom.org/3905
to look at the new patch set (#13).
Simplify TS alloc: move slot assignment
Move into separate functions:
* move timeslot reservation
* move UL timeslot assignment
* move DL timeslot assignment
Change-Id: I64cf78c5cfc78664766f9769dd5cde632dab92b0
Related: OS#2282
---
M src/gprs_rlcmac_ts_alloc.cpp
M tests/tbf/TbfTest.err
2 files changed, 90 insertions(+), 40 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-pcu refs/changes/05/3905/13
diff --git a/src/gprs_rlcmac_ts_alloc.cpp b/src/gprs_rlcmac_ts_alloc.cpp
index e290a14..655036c 100644
--- a/src/gprs_rlcmac_ts_alloc.cpp
+++ b/src/gprs_rlcmac_ts_alloc.cpp
@@ -58,6 +58,21 @@
return was_set;
}
+static inline void masked_override_with(char *buf, uint8_t mask, char set_char)
+{
+ int i;
+ for (i = 0; mask; i++, mask >>= 1)
+ if (mask & 1)
+ buf[i] = set_char;
+}
+
+static void ts_format(char *buf, uint8_t dl_mask, uint8_t ul_mask)
+{
+ snprintf(buf, 9, OSMO_BIT_SPEC, OSMO_BIT_PRINT_EX(dl_mask, 'D'));
+ masked_override_with(buf, ul_mask, 'U');
+ masked_override_with(buf, ul_mask & dl_mask, 'C');
+}
+
static inline int8_t find_free_usf(const struct gprs_rlcmac_pdch *pdch)
{
uint8_t usf_map = 0;
@@ -724,6 +739,75 @@
return 0;
}
+/*! Update MS' reserved timeslots
+ *
+ * \param[in,out] trx Pointer to TRX struct
+ * \param[in,out] ms_ Pointer to MS object
+ * \param[in] tbf_ Pointer to TBF struct
+ * \param[in] res_ul_slots Newly reserved UL slots
+ * \param[in] res_dl_slots Newly reserved DL slots
+ * \param[in] ul_slots available UL slots (for logging only)
+ * \param[in] dl_slots available DL slots (for logging only)
+ */
+static void update_ms_reserved_slots(gprs_rlcmac_trx *trx, GprsMs *ms, uint8_t
res_ul_slots, uint8_t res_dl_slots,
+ uint8_t ul_slots, uint8_t dl_slots)
+{
+ char slot_info[9] = { 0 };
+
+ if (res_ul_slots == ms->reserved_ul_slots() && res_dl_slots ==
ms->reserved_dl_slots())
+ return;
+
+ /* The reserved slots have changed, update the MS */
+ ms->set_reserved_slots(trx, res_ul_slots, res_dl_slots);
+
+ ts_format(slot_info, dl_slots, ul_slots);
+ LOGP(DRLCMAC, LOGL_DEBUG, "- Reserved DL/UL slots:
(TS=0)\"%s\"(TS=7)\n", slot_info);
+}
+
+/*! Assign given UL timeslots to UL TBF
+ *
+ * \param[in,out] ul_tbf Pointer to UL TBF struct
+ * \param[in,out] trx Pointer to TRX object
+ * \param[in] ul_slots Set of slots to be assigned
+ * \param[in] tfi selected TFI
+ * \param[in] usf selected USF
+ */
+static void assign_ul_tbf_slots(struct gprs_rlcmac_ul_tbf *ul_tbf,
gprs_rlcmac_trx *trx, uint8_t ul_slots, int tfi,
+ int *usf)
+{
+ uint8_t ts;
+
+ for (ts = 0; ts < 8; ts++) {
+ if (!(ul_slots & (1 << ts)))
+ continue;
+
+ OSMO_ASSERT(usf[ts] >= 0);
+
+ LOGP(DRLCMAC, LOGL_DEBUG, "- Assigning UL TS %u\n", ts);
+ assign_uplink_tbf_usf(&trx->pdch[ts], ul_tbf, tfi, usf[ts]);
+ }
+}
+
+/*! Assign given DL timeslots to DL TBF
+ *
+ * \param[in,out] dl_tbf Pointer to DL TBF struct
+ * \param[in,out] trx Pointer to TRX object
+ * \param[in] ul_slots Set of slots to be assigned
+ * \param[in] tfi selected TFI
+ */
+static void assign_dl_tbf_slots(struct gprs_rlcmac_dl_tbf *dl_tbf,
gprs_rlcmac_trx *trx, uint8_t dl_slots, int tfi)
+{
+ uint8_t ts;
+
+ for (ts = 0; ts < 8; ts++) {
+ if (!(dl_slots & (1 << ts)))
+ continue;
+
+ LOGP(DRLCMAC, LOGL_DEBUG, "- Assigning DL TS %u\n", ts);
+ assign_dlink_tbf(&trx->pdch[ts], dl_tbf, tfi);
+ }
+}
+
/*! Slot Allocation: Algorithm B
*
* Assign as many downlink slots as possible.
@@ -897,50 +981,16 @@
/* Step 4: Update MS and TBF and really allocate the resources */
- /* The reserved slots have changed, update the MS */
- if (reserved_ul_slots != ms->reserved_ul_slots() ||
- reserved_dl_slots != ms->reserved_dl_slots())
- {
- ms_->set_reserved_slots(trx,
- reserved_ul_slots, reserved_dl_slots);
-
- LOGP(DRLCMAC, LOGL_DEBUG,
- "- Reserved DL/UL slots: (TS=0)\"%s\"(TS=7)\n",
- set_flag_chars(set_flag_chars(set_flag_chars(slot_info,
- dl_slots, 'D', '.'),
- ul_slots, 'U'),
- ul_slots & dl_slots, 'C'));
- }
+ update_ms_reserved_slots(trx, ms_, reserved_ul_slots,
reserved_dl_slots, ul_slots, dl_slots);
tbf_->trx = trx;
tbf_->first_common_ts = first_common_ts;
tbf_->first_ts = first_ts;
- if (tbf->direction == GPRS_RLCMAC_DL_TBF) {
- struct gprs_rlcmac_dl_tbf *dl_tbf = as_dl_tbf(tbf_);
- for (ts = 0; ts < 8; ts++) {
- if (!(dl_slots & (1 << ts)))
- continue;
-
- LOGP(DRLCMAC, LOGL_DEBUG, "- Assigning DL TS "
- "%d\n", ts);
- assign_dlink_tbf(&trx->pdch[ts], dl_tbf, tfi);
- }
- } else {
- struct gprs_rlcmac_ul_tbf *ul_tbf = as_ul_tbf(tbf_);
-
- for (ts = 0; ts < 8; ts++) {
- if (!(ul_slots & (1 << ts)))
- continue;
-
- OSMO_ASSERT(usf[ts] >= 0);
-
- LOGP(DRLCMAC, LOGL_DEBUG, "- Assigning UL TS "
- "%d\n", ts);
- assign_uplink_tbf_usf(&trx->pdch[ts], ul_tbf,
- tfi, usf[ts]);
- }
- }
+ if (tbf->direction == GPRS_RLCMAC_DL_TBF)
+ assign_dl_tbf_slots(as_dl_tbf(tbf_), trx, dl_slots, tfi);
+ else
+ assign_ul_tbf_slots(as_ul_tbf(tbf_), trx, ul_slots, tfi, usf);
bts->bts->tbf_alloc_algo_b();
diff --git a/tests/tbf/TbfTest.err b/tests/tbf/TbfTest.err
index c673af6..98ec04b 100644
--- a/tests/tbf/TbfTest.err
+++ b/tests/tbf/TbfTest.err
@@ -5906,7 +5906,7 @@
Rx=4 Tx=3 Sum Rx+Tx=5, Tta=3 Ttb=1, Tra=2 Trb=1, Type=1
- Selected DL slots: (TS=0)"..ddDd.."(TS=7), single
Using single slot at TS 4 for DL
-- Reserved DL/UL slots: (TS=0)"....C..."(TS=7)
+- Reserved DL/UL slots: (TS=0)"...DC..."(TS=7)
- Assigning DL TS 4
PDCH(TS 4, TRX 0): Attaching TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL
EGPRS), 1 TBFs, USFs = 00, TFIs = 00000001.
TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) Setting Control TS 4
--
To view, visit https://gerrit.osmocom.org/3905
To unsubscribe, visit https://gerrit.osmocom.org/settings
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I64cf78c5cfc78664766f9769dd5cde632dab92b0
Gerrit-PatchSet: 13
Gerrit-Project: osmo-pcu
Gerrit-Branch: master
Gerrit-Owner: Max <msur...@sysmocom.de>
Gerrit-Reviewer: Harald Welte <lafo...@gnumonks.org>
Gerrit-Reviewer: Holger Freyther <hol...@freyther.de>
Gerrit-Reviewer: Jenkins Builder
