31 Oct
2022
31 Oct
'22
10:36 a.m.
pespin has uploaded this change for review. (
https://gerrit.osmocom.org/c/osmo-pcu/+/29924 )
Change subject: WIP: Move UL allocation&assign functions to gprs_ms.c
......................................................................
WIP: Move UL allocation&assign functions to gprs_ms.c
Change-Id: I256aeede2a2678c9738539fb6ec4db9766fa85e4
---
M src/bts.cpp
M src/gprs_ms.c
M src/gprs_ms.h
M src/pdch.cpp
M src/tbf.cpp
M src/tbf.h
M src/tbf_fsm.c
M src/tbf_ul.cpp
M src/tbf_ul.h
9 files changed, 69 insertions(+), 54 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-pcu refs/changes/24/29924/1
diff --git a/src/bts.cpp b/src/bts.cpp
index 2389987..31c2b0a 100644
--- a/src/bts.cpp
+++ b/src/bts.cpp
@@ -981,7 +981,7 @@
bts_do_rate_ctr_inc(bts, CTR_IMMEDIATE_ASSIGN_UL_TBF_TWO_PHASE);
} else {
GprsMs *ms = bts_alloc_ms(bts, 0, chan_req.egprs_mslot_class);
- tbf = tbf_alloc_ul_ccch(bts, ms);
+ tbf = ms_new_ul_tbf_assigned_agch(ms);
if (!tbf) {
/* Send RR Immediate Assignment Reject */
rc = -EBUSY;
diff --git a/src/gprs_ms.c b/src/gprs_ms.c
index 90e8289..bf4d08a 100644
--- a/src/gprs_ms.c
+++ b/src/gprs_ms.c
@@ -1056,6 +1056,46 @@
}
+/* Alloc a UL TBF to be assigned over PACCH. Called when an MS requests to
+ * create a new UL TBF during the end of life of a previous UL TBF (or an SBA).
+ * In summary, this TBF is allocated as a consequence of receiving a "Pkt
+ * Resource Req" or "Pkt Ctrl Ack" from the MS.
+ * See TS 44.060 9.3.2.4.2 "Non-extended uplink TBF mode".
+ */
+struct gprs_rlcmac_ul_tbf *ms_new_ul_tbf_assigned_pacch(struct GprsMs *ms, int8_t
use_trx)
+{
+ const bool single_slot = false;
+ struct gprs_rlcmac_ul_tbf *ul_tbf;
+
+ ul_tbf = tbf_alloc_ul_tbf(ms->bts, ms, use_trx, single_slot);
+ if (!ul_tbf) {
+ LOGPMS(ms, DTBF, LOGL_NOTICE, "No PDCH resource\n");
+ /* Caller will most probably send a Imm Ass Reject after return */
+ return NULL;
+ }
+ osmo_fsm_inst_dispatch(tbf_state_fi(ul_tbf_as_tbf(ul_tbf)), TBF_EV_ASSIGN_ADD_PACCH,
NULL);
+ /* Contention resolution is considered to be done since TLLI is known in MS */
+ return ul_tbf;
+}
+
+/* Alloc a UL TBF to be assigned over AGCH. Used by request of a "One phase
+ * packet access", where MS requested only 1 PDCH TS (TS 44.018 Table 9.1.8.1). */
+struct gprs_rlcmac_ul_tbf *ms_new_ul_tbf_assigned_agch(struct GprsMs *ms)
+{
+ const int8_t trx_no = -1;
+ const bool single_slot = true;
+ struct gprs_rlcmac_ul_tbf *ul_tbf;
+
+ ul_tbf = tbf_alloc_ul_tbf(ms->bts, ms, trx_no, single_slot);
+ if (!ul_tbf) {
+ LOGP(DTBF, LOGL_NOTICE, "No PDCH resource for Uplink TBF\n");
+ /* Caller will most probably send a Imm Ass Reject after return */
+ return NULL;
+ }
+ osmo_fsm_inst_dispatch(tbf_state_fi(ul_tbf_as_tbf(ul_tbf)), TBF_EV_ASSIGN_ADD_CCCH,
NULL);
+ return ul_tbf;
+}
+
/* A new DL-TBF is allocated and assigned through PACCH using "tbf".
* "tbf" may be either a UL-TBF or a DL-TBF.
* Note: This should be called only when MS is reachable, see
ms_is_reachable_for_dl_ass().
@@ -1088,7 +1128,6 @@
struct gprs_rlcmac_dl_tbf *dl_tbf;
dl_tbf = dl_tbf_alloc(ms->bts, ms, trx_no, single_slot);
-
if (!dl_tbf) {
LOGPMS(ms, DTBF, LOGL_NOTICE, "No PDCH resource\n");
return -EBUSY;
diff --git a/src/gprs_ms.h b/src/gprs_ms.h
index 8014f26..53b0cd6 100644
--- a/src/gprs_ms.h
+++ b/src/gprs_ms.h
@@ -144,6 +144,8 @@
bool ms_nacc_rts(const struct GprsMs *ms);
struct msgb *ms_nacc_create_rlcmac_msg(struct GprsMs *ms, struct gprs_rlcmac_tbf *tbf,
uint32_t fn, uint8_t ts);
+struct gprs_rlcmac_ul_tbf *ms_new_ul_tbf_assigned_pacch(struct GprsMs *ms, int8_t
use_trx);
+struct gprs_rlcmac_ul_tbf *ms_new_ul_tbf_assigned_agch(struct GprsMs *ms);
int ms_new_dl_tbf_assigned_on_pacch(struct GprsMs *ms, struct gprs_rlcmac_tbf *tbf);
int ms_new_dl_tbf_assigned_on_pch(struct GprsMs *ms);
int ms_append_llc_dl_data(struct GprsMs *ms, uint16_t pdu_delay_csec, const uint8_t
*data, uint16_t len);
diff --git a/src/pdch.cpp b/src/pdch.cpp
index ad521e3..8dd7597 100644
--- a/src/pdch.cpp
+++ b/src/pdch.cpp
@@ -119,7 +119,7 @@
bts_do_rate_ctr_inc(bts, CTR_CHANNEL_REQUEST_DESCRIPTION);
/* This call will register the new TBF with the MS on success */
- gprs_rlcmac_ul_tbf *ul_tbf = tbf_alloc_ul_pacch(bts, tbf->ms(),
tbf->trx->trx_no);
+ gprs_rlcmac_ul_tbf *ul_tbf = ms_new_ul_tbf_assigned_pacch(tbf->ms(),
tbf->trx->trx_no);
/* schedule uplink assignment or reject */
if (ul_tbf) {
@@ -757,7 +757,7 @@
get_meas(meas, request);
ms_update_l1_meas(ms, meas);
- ul_tbf = tbf_alloc_ul_pacch(bts, ms, trx_no());
+ ul_tbf = ms_new_ul_tbf_assigned_pacch(ms, trx_no());
if (!ul_tbf) {
handle_tbf_reject(bts, ms, trx_no(), ts_no);
goto return_unref;
diff --git a/src/tbf.cpp b/src/tbf.cpp
index d855083..58695d2 100644
--- a/src/tbf.cpp
+++ b/src/tbf.cpp
@@ -801,6 +801,11 @@
return (enum tbf_fsm_states)tbf->state_fsm.fi->state;
}
+struct osmo_fsm_inst *tbf_state_fi(const struct gprs_rlcmac_tbf *tbf)
+{
+ return tbf->state_fsm.fi;
+}
+
struct osmo_fsm_inst *tbf_ul_ass_fi(const struct gprs_rlcmac_tbf *tbf)
{
return tbf->ul_ass_fsm.fi;
diff --git a/src/tbf.h b/src/tbf.h
index 65b131e..616c3e0 100644
--- a/src/tbf.h
+++ b/src/tbf.h
@@ -125,6 +125,7 @@
enum tbf_fsm_states tbf_state(const struct gprs_rlcmac_tbf *tbf);
struct osmo_fsm_inst *tbf_ul_ass_fi(const struct gprs_rlcmac_tbf *tbf);
struct osmo_fsm_inst *tbf_dl_ass_fi(const struct gprs_rlcmac_tbf *tbf);
+struct osmo_fsm_inst *tbf_state_fi(const struct gprs_rlcmac_tbf *tbf);
enum gprs_rlcmac_tbf_direction tbf_direction(const struct gprs_rlcmac_tbf *tbf);
void tbf_set_ms(struct gprs_rlcmac_tbf *tbf, struct GprsMs *ms);
struct llist_head *tbf_ms_list(struct gprs_rlcmac_tbf *tbf);
diff --git a/src/tbf_fsm.c b/src/tbf_fsm.c
index 9118fd7..a8e7886 100644
--- a/src/tbf_fsm.c
+++ b/src/tbf_fsm.c
@@ -99,8 +99,13 @@
switch (event) {
case TBF_EV_ASSIGN_ADD_CCCH:
mod_ass_type(ctx, GPRS_RLCMAC_FLAG_CCCH, true);
- tbf_fsm_state_chg(fi, tbf_direction(ctx->tbf) == GPRS_RLCMAC_DL_TBF ?
- TBF_ST_ASSIGN : TBF_ST_FLOW);
+ if (tbf_direction(ctx->tbf) == GPRS_RLCMAC_UL_TBF) {
+ struct gprs_rlcmac_ul_tbf *ul_tbf = tbf_as_ul_tbf(ctx->tbf);
+ tbf_fsm_state_chg(fi, TBF_ST_FLOW);
+ ul_tbf_contention_resolution_start(ul_tbf);
+ } else {
+ tbf_fsm_state_chg(fi, TBF_ST_ASSIGN);
+ }
break;
case TBF_EV_ASSIGN_ADD_PACCH:
mod_ass_type(ctx, GPRS_RLCMAC_FLAG_PACCH, true);
diff --git a/src/tbf_ul.cpp b/src/tbf_ul.cpp
index 7189b6f..6edf8be 100644
--- a/src/tbf_ul.cpp
+++ b/src/tbf_ul.cpp
@@ -104,7 +104,7 @@
}
/* Generic function to alloc a UL TBF, later configured to be assigned either over CCCH
or PACCH */
-struct gprs_rlcmac_ul_tbf *tbf_alloc_ul_tbf(struct gprs_rlcmac_bts *bts, GprsMs *ms,
int8_t use_trx, bool single_slot)
+struct gprs_rlcmac_ul_tbf *tbf_alloc_ul_tbf(struct gprs_rlcmac_bts *bts, struct GprsMs
*ms, int8_t use_trx, bool single_slot)
{
struct gprs_rlcmac_ul_tbf *tbf;
int rc;
@@ -147,48 +147,6 @@
return tbf;
}
-/* Alloc a UL TBF to be assigned over PACCH. Called when an MS requests to
- * create a new UL TBF during the end of life of a previous UL TBF (or an SBA).
- * In summary, this TBF is allocated as a consequence of receiving a "Pkt
- * Resource Req" or "Pkt Ctrl Ack" from the MS.
- * See TS 44.060 9.3.2.4.2 "Non-extended uplink TBF mode".
- */
-gprs_rlcmac_ul_tbf *tbf_alloc_ul_pacch(struct gprs_rlcmac_bts *bts, GprsMs *ms, int8_t
use_trx)
-{
- struct gprs_rlcmac_ul_tbf *tbf;
-
- tbf = tbf_alloc_ul_tbf(bts, ms, use_trx, false);
- if (!tbf) {
- LOGPMS(ms, DTBF, LOGL_NOTICE, "No PDCH resource\n");
- /* Caller will most probably send a Imm Ass Reject after return */
- return NULL;
- }
- /* Contention resolution is considered to be done since TLLI is known in MS: */
- tbf->m_contention_resolution_done = true;
- osmo_fsm_inst_dispatch(tbf->state_fsm.fi, TBF_EV_ASSIGN_ADD_PACCH, NULL);
-
- return tbf;
-}
-
-/* Alloc a UL TBF to be assigned over CCCH. Used by request of a "One phase
- * packet access", where MS requested only 1 PDCH TS (TS 44.018 Table 9.1.8.1). */
-struct gprs_rlcmac_ul_tbf *tbf_alloc_ul_ccch(struct gprs_rlcmac_bts *bts, struct GprsMs
*ms)
-{
- struct gprs_rlcmac_ul_tbf *tbf;
-
- tbf = tbf_alloc_ul_tbf(bts, ms, -1, true);
- if (!tbf) {
- LOGP(DTBF, LOGL_NOTICE, "No PDCH resource for Uplink TBF\n");
- /* Caller will most probably send a Imm Ass Reject after return */
- return NULL;
- }
- osmo_fsm_inst_dispatch(tbf->state_fsm.fi, TBF_EV_ASSIGN_ADD_CCCH, NULL);
- tbf->contention_resolution_start();
- OSMO_ASSERT(tbf->ms());
-
- return tbf;
-}
-
/* Create a temporary dummy TBF to Tx a ImmAssReject if allocating a new one during
* packet resource Request failed. This is similar as tbf_alloc_ul() but without
* calling tbf->setup() (in charge of TFI/USF allocation), and reusing resources
@@ -237,7 +195,7 @@
gprs_rlcmac_ul_tbf::gprs_rlcmac_ul_tbf(struct gprs_rlcmac_bts *bts_, GprsMs *ms) :
gprs_rlcmac_tbf(bts_, ms, GPRS_RLCMAC_UL_TBF),
m_rx_counter(0),
- m_contention_resolution_done(false),
+ m_contention_resolution_done(true),
m_ul_gprs_ctrs(NULL),
m_ul_egprs_ctrs(NULL)
{
@@ -311,6 +269,7 @@
* timeout only for one-phase packet access, since two-phase is handled
* through SBA structs, which are freed by the PDCH UL Controller if the
* single allocated block is lost. */
+ m_contention_resolution_done = false;
T_START(this, T3141, 3141, "Contention resolution (UL-TBF, CCCH)", true);
}
void gprs_rlcmac_ul_tbf::contention_resolution_success()
@@ -782,6 +741,11 @@
return tbf->ul_ack_fsm.fi;
}
+void ul_tbf_contention_resolution_start(struct gprs_rlcmac_ul_tbf *tbf)
+{
+ tbf->contention_resolution_start();
+}
+
void ul_tbf_contention_resolution_success(struct gprs_rlcmac_ul_tbf *tbf)
{
return tbf->contention_resolution_success();
diff --git a/src/tbf_ul.h b/src/tbf_ul.h
index 59e5d66..0812b9d 100644
--- a/src/tbf_ul.h
+++ b/src/tbf_ul.h
@@ -121,9 +121,6 @@
return m_window.ws();
}
-struct gprs_rlcmac_ul_tbf *tbf_alloc_ul_tbf(struct gprs_rlcmac_bts *bts, GprsMs *ms,
int8_t use_trx, bool single_slot);
-struct gprs_rlcmac_ul_tbf *tbf_alloc_ul_pacch(struct gprs_rlcmac_bts *bts, GprsMs *ms,
int8_t use_trx);
-struct gprs_rlcmac_ul_tbf *tbf_alloc_ul_ccch(struct gprs_rlcmac_bts *bts, struct GprsMs
*ms);
struct gprs_rlcmac_ul_tbf *handle_tbf_reject(struct gprs_rlcmac_bts *bts,
GprsMs *ms, uint8_t trx_no, uint8_t ts_no);
@@ -135,13 +132,15 @@
#ifdef __cplusplus
extern "C" {
#endif
+struct gprs_rlcmac_ul_tbf *tbf_alloc_ul_tbf(struct gprs_rlcmac_bts *bts, struct GprsMs
*ms, int8_t use_trx, bool single_slot);
void update_tbf_ta(struct gprs_rlcmac_ul_tbf *tbf, int8_t ta_delta);
void set_tbf_ta(struct gprs_rlcmac_ul_tbf *tbf, uint8_t ta);
struct gprs_rlcmac_ul_tbf *tbf_as_ul_tbf(struct gprs_rlcmac_tbf *tbf);
void tbf_usf_timeout(struct gprs_rlcmac_ul_tbf *tbf);
+void ul_tbf_contention_resolution_start(struct gprs_rlcmac_ul_tbf *tbf);
+void ul_tbf_contention_resolution_success(struct gprs_rlcmac_ul_tbf *tbf);
bool ul_tbf_contention_resolution_done(const struct gprs_rlcmac_ul_tbf *tbf);
struct osmo_fsm_inst *tbf_ul_ack_fi(const struct gprs_rlcmac_ul_tbf *tbf);
-void ul_tbf_contention_resolution_success(struct gprs_rlcmac_ul_tbf *tbf);
static inline struct gprs_rlcmac_tbf *ul_tbf_as_tbf(struct gprs_rlcmac_ul_tbf *ul_tbf)
{
--
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Gerrit-Project: osmo-pcu
Gerrit-Branch: master
Gerrit-Change-Id: I256aeede2a2678c9738539fb6ec4db9766fa85e4
Gerrit-Change-Number: 29924
Gerrit-PatchSet: 1
Gerrit-Owner: pespin <pespin(a)sysmocom.de>
Gerrit-MessageType: newchange