diff options
Diffstat (limited to 'tests/rlcmac/rlcmac_prim_test.c')
| -rw-r--r-- | tests/rlcmac/rlcmac_prim_test.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/tests/rlcmac/rlcmac_prim_test.c b/tests/rlcmac/rlcmac_prim_test.c index bfc491f..0697abf 100644 --- a/tests/rlcmac/rlcmac_prim_test.c +++ b/tests/rlcmac/rlcmac_prim_test.c @@ -69,6 +69,19 @@ static uint8_t pdu_llc_gmm_att_req[] = { 0x11, 0xe5, 0x10, 0x00, 0xe2, 0x18, 0xf2 }; +/* GMM Attach Compl */ +static uint8_t pdu_llc_gmm_att_compl[] = { 0x01, 0xc0, 0x0d, 0x08, 0x03, 0x55, 0x1c, 0xea }; + +/* SM Activate PDP Context Request */ +static uint8_t pdu_llc_sm_act_pdp_ctx_req[] = { + 0x01, 0xc0, 0x11, 0x8a, 0x41, 0x06, 0x03, 0x0e, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x01, + 0x21, 0x28, 0x09, 0x08, 0x69, 0x6e, 0x74, 0x65, + 0x72, 0x6e, 0x65, 0x74, 0x9e, 0x49, 0x7a +}; + + /** GSM CCCH - Immediate Assignment L2 Pseudo Length @@ -1280,6 +1293,77 @@ static void test_ccch_pag_req1(void) cleanup_test(); } + +/* Validate 2 LLC frames (GMM Attach Compl + SM Act PDP Context Req) in the tx + * queue are transmitted in 1 UL TBF in CS4 (OS#6351): */ +static void test_ul_tbf_2_llc_blocks_in_1_cs4_rlc_block(void) +{ + struct osmo_gprs_rlcmac_prim *rlcmac_prim; + int rc; + + printf("=== %s start ===\n", __func__); + prepare_test(); + uint32_t tlli = 0x2342; + uint8_t ts_nr = 7; + uint8_t usf = 0; + uint32_t rts_fn = 4; + uint8_t bs_cv_max = 15; + struct msgb *llc_msg = msgb_alloc(200, "llc_msg"); + uint8_t imm_ass[sizeof(ccch_imm_ass_pkt_ul_tbf_normal)]; + + /* Submit an SI13 with bs_cv_max: */ + rlcmac_prim = osmo_gprs_rlcmac_prim_alloc_l1ctl_ccch_data_ind(0, create_si13(bs_cv_max)); + rc = osmo_gprs_rlcmac_prim_lower_up(rlcmac_prim); + OSMO_ASSERT(rc == 0); + + + /* Submit LLC bytes containing GMM ATTACH COMPL */ + memcpy(msgb_put(llc_msg, sizeof(pdu_llc_gmm_att_compl)), + pdu_llc_gmm_att_compl, + sizeof(pdu_llc_gmm_att_compl)); + rlcmac_prim = osmo_gprs_rlcmac_prim_alloc_grr_unitdata_req(tlli, msgb_data(llc_msg), msgb_length(llc_msg)); + rlcmac_prim->grr.unitdata_req.sapi = OSMO_GPRS_RLCMAC_LLC_SAPI_GMM; + rlcmac_prim->grr.unitdata_req.radio_prio = 1; + rc = osmo_gprs_rlcmac_prim_upper_down(rlcmac_prim); + OSMO_ASSERT(rc == 0); + + /* Submit LLC bytes containing SM ACT PDP CTX REQ */ + msgb_trim(llc_msg, 0); + memcpy(msgb_put(llc_msg, sizeof(pdu_llc_sm_act_pdp_ctx_req)), + pdu_llc_sm_act_pdp_ctx_req, + sizeof(pdu_llc_sm_act_pdp_ctx_req)); + /* -4: The scenario where this was seen is actually reproduced by having + * a DL TBF sending GMM Attach Accept, and MS requesting a UL TBF through + * DL AKC/NACK and getting it assigned over PACCH. As a result, no + * contention resolution is needed and the UL TBF block doesn't contain + * TLLI. Since it's far easy writing here a test by directlly allocating + * the UL TBF, we simply account for the extra TLLI added in the RLC block + * by discounting 4 bytes from the upper LLC layer payload to end up with + * the same packet size as the one reproduced in the real case scenario. + */ + rlcmac_prim = osmo_gprs_rlcmac_prim_alloc_grr_unitdata_req(tlli, msgb_data(llc_msg), msgb_length(llc_msg) - 4); + rlcmac_prim->grr.unitdata_req.sapi = OSMO_GPRS_RLCMAC_LLC_SAPI_GMM; + rlcmac_prim->grr.unitdata_req.radio_prio = 1; + rc = osmo_gprs_rlcmac_prim_upper_down(rlcmac_prim); + OSMO_ASSERT(rc == 0); + + memcpy(imm_ass, ccch_imm_ass_pkt_ul_tbf_normal, sizeof(imm_ass)); + imm_ass[7] = last_rach_req_ra; /* Update RA to match */ + imm_ass[14] = 0x70; /* Set CS4 */ + rlcmac_prim = osmo_gprs_rlcmac_prim_alloc_l1ctl_ccch_data_ind(0, imm_ass); + rc = osmo_gprs_rlcmac_prim_lower_up(rlcmac_prim); + OSMO_ASSERT(rc == 0); + + /* Trigger transmission of LLC data (first part) */ + rlcmac_prim = osmo_gprs_rlcmac_prim_alloc_l1ctl_pdch_rts_ind(ts_nr, rts_fn, usf); + rc = osmo_gprs_rlcmac_prim_lower_up(rlcmac_prim); + OSMO_ASSERT(rc == 0); + + printf("=== %s end ===\n", __func__); + msgb_free(llc_msg); + cleanup_test(); +} + static const struct log_info_cat test_log_categories[] = { }; static const struct log_info test_log_info = { .cat = test_log_categories, @@ -1317,6 +1401,7 @@ int main(int argc, char *argv[]) test_dl_tbf_ccch_assign(); test_dl_tbf_ccch_assign_requests_ul_tbf_pacch(); test_ccch_pag_req1(); + test_ul_tbf_2_llc_blocks_in_1_cs4_rlc_block(); talloc_free(tall_ctx); } |