diff options
| author | Keith <keith@rhizomatica.org> | 2020-09-21 00:09:30 +0200 |
|---|---|---|
| committer | Keith <keith@rhizomatica.org> | 2020-09-21 00:18:48 +0200 |
| commit | 6d92f148aa2354da52b29f366ebd628c9c0c000a (patch) | |
| tree | 220f9d84afc8890a5259f1ae0e0321e58ec42199 /src/sgsn/gprs_gmm.c | |
| parent | 27a0bf70e74895824bbf9559ff9403ab8859a2b5 (diff) | |
Fix Radio Priority in MM Attach and PDP Context Activation
3GPP TS 24.008 Section 10.5.7.2 Radio Priority states that the Radio Priority IE is
3 bits as follows:
--------------------------------------------
0 0 1 priority level 1 (highest)
0 1 0 priority level 2
0 1 1 priority level 3
1 0 0 priority level 4 (lowest)
All other values are interpreted as priority
level 4 by this version of the protocol.
--------------------------------------------
However at least the MediaTek MT6753 and MT6592 have been
observed to interpret a value of 0 0 0 in an undetermined way
resulting in lack of access to RACH in the cell.
Fixes: OS#4506
Change-Id: I810cd541eb5764ee3f2c238bcd3a10836228d0b5
Diffstat (limited to 'src/sgsn/gprs_gmm.c')
| -rw-r--r-- | src/sgsn/gprs_gmm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/sgsn/gprs_gmm.c b/src/sgsn/gprs_gmm.c index 86545f85..bf72cd6f 100644 --- a/src/sgsn/gprs_gmm.c +++ b/src/sgsn/gprs_gmm.c @@ -302,7 +302,7 @@ int gsm48_tx_gmm_att_ack(struct sgsn_mm_ctx *mm) aa->att_result = 1; /* GPRS only */ t = osmo_tdef_get(sgsn->cfg.T_defs, 3312, OSMO_TDEF_S, -1); aa->ra_upd_timer = gprs_secs_to_tmr_floor(t); - aa->radio_prio = 4; /* lowest */ + aa->radio_prio = 0x44; /* lowest */ gsm48_encode_ra(&aa->ra_id, &mm->ra); #if 0 |