diff options
Diffstat (limited to 'src/gprs_ms.h')
| -rw-r--r-- | src/gprs_ms.h | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/src/gprs_ms.h b/src/gprs_ms.h index ef1cc4e5..276733ca 100644 --- a/src/gprs_ms.h +++ b/src/gprs_ms.h @@ -157,11 +157,30 @@ static inline struct gprs_llc_queue *ms_llc_queue(struct GprsMs *ms) return &ms->llc_queue; } +/* Function used in code where a ul_tbf related event occurs and hence its state + * changes, which in turn may change the entire MS state (eg becoming reachable + * over PCH or PACCH) and the caller may want to know if it is a good time to + * assign a DL TBF (and whether we have DL data to send) */ static inline bool ms_need_dl_tbf(struct GprsMs *ms) { - if (ms_dl_tbf(ms) != NULL && - tbf_state((const struct gprs_rlcmac_tbf *)ms_dl_tbf(ms)) != TBF_ST_WAIT_RELEASE) - return false; + struct gprs_rlcmac_dl_tbf *dl_tbf = ms_dl_tbf(ms); + if (dl_tbf) { + switch (tbf_state(dl_tbf_as_tbf(dl_tbf))) { + case TBF_ST_NEW: + case TBF_ST_ASSIGN: + case TBF_ST_FLOW: + case TBF_ST_FINISHED: + case TBF_ST_WAIT_RELEASE: + return false; /* TBF in use, hence no need for new DL TBF */ + case TBF_ST_WAIT_REUSE_TFI: + case TBF_ST_RELEASING: + /* TBF cannot be used to send further data, a new one + * may be needed, check below */ + break; + default: + OSMO_ASSERT(0); + } + } return llc_queue_size(ms_llc_queue(ms)) > 0; } |