diff options
Diffstat (limited to 'src/rlcmac/tbf_ul_ass_fsm.c')
| -rw-r--r-- | src/rlcmac/tbf_ul_ass_fsm.c | 40 |
1 files changed, 18 insertions, 22 deletions
diff --git a/src/rlcmac/tbf_ul_ass_fsm.c b/src/rlcmac/tbf_ul_ass_fsm.c index 5587ddb..64797aa 100644 --- a/src/rlcmac/tbf_ul_ass_fsm.c +++ b/src/rlcmac/tbf_ul_ass_fsm.c @@ -103,27 +103,24 @@ free_ret: return NULL; } -/* Generate a 8-bit CHANNEL REQUEST message as per 3GPP TS 44.018, 9.1.8 */ -static uint8_t gen_chan_req(bool single_block) -{ - uint8_t rnd = (uint8_t)rand(); - - if (single_block) /* 01110xxx */ - return 0x70 | (rnd & 0x07); - - /* 011110xx or 01111x0x or 01111xx0 */ - if ((rnd & 0x07) == 0x07) - return 0x78; - return 0x78 | (rnd & 0x07); -} - -static int submit_rach_req(struct gprs_rlcmac_tbf_ul_ass_fsm_ctx *ctx) +static int submit_packet_access_req(const struct gprs_rlcmac_tbf_ul_ass_fsm_ctx *ctx) { struct osmo_gprs_rlcmac_prim *rlcmac_prim; - ctx->rach_req_ra = gen_chan_req(ctx->ass_type == GPRS_RLCMAC_TBF_UL_ASS_TYPE_2PHASE); - LOGPFSML(ctx->fi, LOGL_INFO, "Send RACH.req ra=0x%02x\n", ctx->rach_req_ra); - rlcmac_prim = gprs_rlcmac_prim_alloc_l1ctl_rach8_req(ctx->rach_req_ra); + switch (ctx->ass_type) { + case GPRS_RLCMAC_TBF_UL_ASS_TYPE_1PHASE: + /* 3GPP TS 44.018, table 9.1.8.1: cause 011110xx or 01111x0x or 01111xx0 */ + LOGPFSML(ctx->fi, LOGL_INFO, "Requesting one-phase packet access using CCCH\n"); + rlcmac_prim = gprs_rlcmac_prim_alloc_l1ctl_rach8_req(0x78); + break; + case GPRS_RLCMAC_TBF_UL_ASS_TYPE_2PHASE: + /* 3GPP TS 44.018, table 9.1.8.1: cause 011110xx */ + LOGPFSML(ctx->fi, LOGL_INFO, "Requesting two-phase packet access using CCCH\n"); + rlcmac_prim = gprs_rlcmac_prim_alloc_l1ctl_rach8_req(0x70); + break; + /* TODO: EGPRS specific modes (11-bit RACH) */ + } + return gprs_rlcmac_prim_call_down_cb(rlcmac_prim); } @@ -271,7 +268,7 @@ static void st_idle(struct osmo_fsm_inst *fi, uint32_t event, void *data) /* Inform the main TBF state about the assignment starting: */ osmo_fsm_inst_dispatch(ctx->ul_tbf->state_fsm.fi, GPRS_RLCMAC_TBF_UL_EV_UL_ASS_START, NULL); ctx->ass_type = *(enum gprs_rlcmac_tbf_ul_ass_type *)data; - rc = submit_rach_req(ctx); + rc = submit_packet_access_req(ctx); if (rc < 0) { osmo_fsm_inst_dispatch(ctx->ul_tbf->state_fsm.fi, GPRS_RLCMAC_TBF_UL_EV_UL_ASS_REJ, NULL); break; @@ -702,10 +699,9 @@ bool gprs_rlcmac_tbf_ul_ass_pending(struct gprs_rlcmac_ul_tbf *ul_tbf) return ul_tbf->ul_ass_fsm.fi->state != GPRS_RLCMAC_TBF_UL_ASS_ST_IDLE; } -bool gprs_rlcmac_tbf_ul_ass_match_rach_req(struct gprs_rlcmac_ul_tbf *ul_tbf, uint8_t ra) +bool gprs_rlcmac_tbf_ul_ass_wait_ccch_imm_ass(const struct gprs_rlcmac_ul_tbf *ul_tbf) { - return ul_tbf->ul_ass_fsm.fi->state == GPRS_RLCMAC_TBF_UL_ASS_ST_WAIT_CCCH_IMM_ASS && - ul_tbf->ul_ass_fsm.rach_req_ra == ra; + return ul_tbf->ul_ass_fsm.fi->state == GPRS_RLCMAC_TBF_UL_ASS_ST_WAIT_CCCH_IMM_ASS; } bool gprs_rlcmac_tbf_ul_ass_waiting_tbf_starting_time(const struct gprs_rlcmac_ul_tbf *ul_tbf) |