Store T3192 value received from SI13, do some sanity checks

Timer T3192 may be used in the future to know wheter a DL TBF assignment
can be sent on PACCH after the last DL TBF has finished (final ACK).

Change-Id: Ie5f6251ee773f56771f9a9507711a20e6282aac6
---
M src/bts.cpp
M src/pcu_l1_if.cpp
2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/src/bts.cpp b/src/bts.cpp
index 2dbccda..177544a 100644
--- a/src/bts.cpp
+++ b/src/bts.cpp
@@ -80,6 +80,7 @@
 	{ .T=3168, .default_val=4000, .unit=OSMO_TDEF_MS,  .desc="Time MS waits for PACKET UPLINK ACK when establishing a UL TBF", .val=0 },
 	{ .T=3169, .default_val=5,   .unit=OSMO_TDEF_S,  .desc="Reuse of USF and TFI(s) after the MS uplink TBF assignment is invalid", .val=0 },
 	{ .T=3191, .default_val=5,   .unit=OSMO_TDEF_S,  .desc="Reuse of TFI(s) after sending (1) last RLC Data Block on TBF(s), or (2) PACKET TBF RELEASE for an MBMS radio bearer", .val=0 },
+	{ .T=3192, .default_val=1500, .unit=OSMO_TDEF_MS, .desc="Time MS stays monitoring the PDCH after transmitting DL ACK/NACK for last DL block (FBI=1). Configured at the BSC (SI13).", .val=0 },
 	{ .T=3193, .default_val=1600, .unit=OSMO_TDEF_MS, .desc="Reuse of TFI(s) after reception of final PACKET DOWNLINK ACK/NACK from MS for TBF", .val=0 },
 	{ .T=3195, .default_val=5,   .unit=OSMO_TDEF_S,  .desc="Reuse of TFI(s) upon no response from the MS (radio failure or cell change) for TBF/MBMS radio bearer", .val=0 },
 	{ .T = -16, .default_val = 1000, .unit = OSMO_TDEF_MS,
diff --git a/src/pcu_l1_if.cpp b/src/pcu_l1_if.cpp
index 686853c..a256962 100644
--- a/src/pcu_l1_if.cpp
+++ b/src/pcu_l1_if.cpp
@@ -436,8 +436,13 @@
 			si_ro = ((struct gsm48_system_information_type_13*)data)->rest_octets;
 			if (osmo_gsm48_rest_octets_si13_decode(&bts->si13_ro_decoded, si_ro) < 0)
 				LOGP(DPCU, LOGL_ERROR, "Error decoding SI13\n");
-			/* Update our cached T3168 from it: */
+			/* Update our cached timers from it: */
 			osmo_tdef_set(bts->T_defs_bts, 3168, bts->si13_ro_decoded.cell_opts.t3168, OSMO_TDEF_MS);
+			osmo_tdef_set(bts->T_defs_bts, 3192, bts->si13_ro_decoded.cell_opts.t3192, OSMO_TDEF_MS);
+			/* Some sanity checks: */
+			if (bts->si13_ro_decoded.cell_opts.t3192 >=
+			    osmo_tdef_get(bts->T_defs_bts, 3193, OSMO_TDEF_MS, -1))
+				LOGP(DL1IF, LOGL_ERROR, "Timers incorrectly configured! T3192 >= T3193\n");
 			break;
 		default:
 			LOGP(DL1IF, LOGL_ERROR,

