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| author | Aravind Sirsikar <arvind.sirsikar@radisys.com> | 2016-09-15 17:51:16 +0530 |
|---|---|---|
| committer | Aravind Sirsikar <arvind.sirsikar@radisys.com> | 2016-09-15 17:51:16 +0530 |
| commit | 8e70bb5bb4751e3a7f33b95b2994bff410235844 (patch) | |
| tree | cbe1fae5b15ea06365c63548f6157ca5fada1323 /src/tbf_dl.cpp | |
| parent | 22a901905c9749b03fceccda4d550f3da799d524 (diff) | |
tbf_dl: factor out EGPRS DL window size calculation
A subsequent patch needs to call this from gprs_rlcmac_tbf::update(),
so to avoid code dup, put the calculation in a separate function.
Related: OS#1808
Change-Id: I7c7777d43f843bbd3421503fc2a8600f148ca035
Diffstat (limited to 'src/tbf_dl.cpp')
| -rw-r--r-- | src/tbf_dl.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/tbf_dl.cpp b/src/tbf_dl.cpp index 489020b3..457f2c9b 100644 --- a/src/tbf_dl.cpp +++ b/src/tbf_dl.cpp @@ -1322,3 +1322,23 @@ enum egprs_rlcmac_dl_spb gprs_rlcmac_dl_tbf::get_egprs_dl_spb(const int bsn) /* Non SPB cases 0 is reurned */ return EGPRS_RLCMAC_DL_NO_RETX; } + +void gprs_rlcmac_dl_tbf::egprs_calc_window_size() +{ + struct gprs_rlcmac_bts *bts_data = bts->bts_data(); + unsigned int num_pdch = pcu_bitcount(dl_slots()); + unsigned int ws = bts_data->ws_base + num_pdch * bts_data->ws_pdch; + + ws = (ws / 32) * 32; + ws = OSMO_MAX(64, ws); + + if (num_pdch == 1) + ws = OSMO_MIN(192, ws); + else + ws = OSMO_MIN(128 * num_pdch, ws); + + LOGP(DRLCMAC, LOGL_INFO, "%s: Setting EGPRS window size to %d\n", + name(), ws); + + m_window.set_ws(ws); +} |