pespin has uploaded this change for review. ( https://gerrit.osmocom.org/c/libosmo-gprs/+/35786?usp=email )
Change subject: rlcmac: Implement RLC_OCTET_COUNT in DL ACK/NACK ......................................................................
rlcmac: Implement RLC_OCTET_COUNT in DL ACK/NACK
This helps debugging what's already in the MS tx queue when requesting a new UL TBF.
Change-Id: Ie5f399fa0bffed8e39811075feba47a54054c8e5 --- M include/osmocom/gprs/rlcmac/gre.h M src/rlcmac/gre.c M src/rlcmac/rlcmac_enc.c M tests/rlcmac/rlcmac_prim_test.ok 4 files changed, 40 insertions(+), 2 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/libosmo-gprs refs/changes/86/35786/1
diff --git a/include/osmocom/gprs/rlcmac/gre.h b/include/osmocom/gprs/rlcmac/gre.h index be36e23..b9a917d 100644 --- a/include/osmocom/gprs/rlcmac/gre.h +++ b/include/osmocom/gprs/rlcmac/gre.h @@ -46,6 +46,7 @@ bool gprs_rlcmac_entity_in_packet_transfer_mode(const struct gprs_rlcmac_entity *gre); bool gprs_rlcmac_entity_have_tx_data_queued(const struct gprs_rlcmac_entity *gre); int gprs_rlcmac_entity_start_ul_tbf_pkt_acc_proc_if_needed(struct gprs_rlcmac_entity *gre); +uint16_t gprs_rlcmac_entity_calculate_new_ul_tbf_rlc_octet_count(const struct gprs_rlcmac_entity *gre);
int gprs_rlcmac_entity_llc_enqueue(struct gprs_rlcmac_entity *gre, const uint8_t *ll_pdu, unsigned int ll_pdu_len, diff --git a/src/rlcmac/gre.c b/src/rlcmac/gre.c index 9102124..d6537fd 100644 --- a/src/rlcmac/gre.c +++ b/src/rlcmac/gre.c @@ -259,6 +259,31 @@ return rc; }
+/* Calculate TS 44.060 Table 12.7.2 RLC_OCTET_COUNT. 0 = unable to count. */ +uint16_t gprs_rlcmac_entity_calculate_new_ul_tbf_rlc_octet_count(const struct gprs_rlcmac_entity *gre) +{ + /* The RLC_OCTET_COUNT field indicates the number of RLC data octets, + * plus the number of RLC data block length octets, that the mobile + * station wishes to transfer. The value '0' indicates that the mobile + * station does not provide any information on the TBF size. + */ + uint32_t rlc_oct_cnt = 0; + unsigned int i, j; + const struct gprs_rlcmac_llc_queue *q = gre->llc_queue; + + for (i = 0; i < ARRAY_SIZE(q->pq); i++) { + for (j = 0; j < ARRAY_SIZE(q->pq[i]); j++) { + struct msgb *msg; + llist_for_each_entry(msg, &q->pq[i][j].queue, list) { + rlc_oct_cnt = 1 + msgb_l2len(msg); + if (rlc_oct_cnt >= UINT16_MAX) + return UINT16_MAX; + } + } + } + return rlc_oct_cnt; +} + struct msgb *gprs_rlcmac_gre_create_pkt_ctrl_ack(const struct gprs_rlcmac_entity *gre) { struct msgb *msg; diff --git a/src/rlcmac/rlcmac_enc.c b/src/rlcmac/rlcmac_enc.c index dec2fa6..afe5bce 100644 --- a/src/rlcmac/rlcmac_enc.c +++ b/src/rlcmac/rlcmac_enc.c @@ -403,7 +403,7 @@ chan_req->RADIO_PRIORITY = gprs_rlcmac_llc_queue_highest_radio_prio_pending(dl_tbf->tbf.gre->llc_queue); chan_req->RLC_MODE = GPRS_RLCMAC_RLC_MODE_ACKNOWLEDGED; chan_req->LLC_PDU_TYPE = GPRS_RLCMAC_LLC_PDU_TYPE_ACKNOWLEDGED; - chan_req->RLC_OCTET_COUNT = 0; /* TODO */ + chan_req->RLC_OCTET_COUNT = gprs_rlcmac_entity_calculate_new_ul_tbf_rlc_octet_count(dl_tbf->tbf.gre); } else { ack->Exist_Channel_Request_Description = 0; } diff --git a/tests/rlcmac/rlcmac_prim_test.ok b/tests/rlcmac/rlcmac_prim_test.ok index 70d0939..b9f18d2 100644 --- a/tests/rlcmac/rlcmac_prim_test.ok +++ b/tests/rlcmac/rlcmac_prim_test.ok @@ -217,7 +217,7 @@ test_rlcmac_prim_down_cb(): Rx L1CTL-PDCH_ESTABLISH.request test_rlcmac_prim_down_cb(): Rx L1CTL-CFG_DL_TBF.request dl_tbf_nr=0 dl_slotmask=0x80 dl_tfi=0 test_rlcmac_prim_up_cb(): Rx GRR-UNITDATA.indication TLLI=0x00000001 ll=[43 c0 01 2b 2b 2b ] -test_rlcmac_prim_down_cb(): Rx L1CTL-PDCH_DATA.request fn=21 ts=7 data_len=23 data=[40 08 10 20 00 00 00 00 00 00 00 30 00 00 00 00 00 03 2b 2b 2b 2b 2b ] +test_rlcmac_prim_down_cb(): Rx L1CTL-PDCH_DATA.request fn=21 ts=7 data_len=23 data=[40 08 10 20 00 00 00 00 00 00 00 30 00 00 f0 00 00 03 2b 2b 2b 2b 2b ] test_rlcmac_prim_down_cb(): Rx L1CTL-CFG_UL_TBF.request ul_tbf_nr=0 ul_slotmask=0xc0 test_rlcmac_prim_down_cb(): Rx L1CTL-PDCH_DATA.request fn=43 ts=7 data_len=23 data=[40 04 00 00 00 04 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b ] test_rlcmac_prim_down_cb(): Rx L1CTL-CFG_UL_TBF.request ul_tbf_nr=0 ul_slotmask=0xc0
-
pespin