diff options
Diffstat (limited to 'openbsc/src/gsm_04_11.c')
| -rw-r--r-- | openbsc/src/gsm_04_11.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/openbsc/src/gsm_04_11.c b/openbsc/src/gsm_04_11.c index c3a49f399..7f570b8e5 100644 --- a/openbsc/src/gsm_04_11.c +++ b/openbsc/src/gsm_04_11.c @@ -948,6 +948,33 @@ int gsm0411_rcv_sms(struct msgb *msg, u_int8_t link_id) switch(msg_type) { case GSM411_MT_CP_DATA: DEBUGPC(DSMS, "RX SMS CP-DATA\n"); + + /* 5.4: For MO, if a CP-DATA is received for a new + * transaction, equals reception of an implicit + * last CP-ACK for previous transaction */ + if (trans->sms.cp_state == GSM411_CPS_IDLE) { + int i; + struct gsm_trans *ptrans; + + /* Scan through all remote initiated transactions */ + for (i=8; i<15; i++) { + if (i == transaction_id) + continue; + + ptrans = trans_find_by_id(lchan->subscr, + GSM48_PDISC_SMS, i); + if (!ptrans) + continue; + + DEBUGP(DSMS, "Implicit CP-ACK for trans_id=%x\n", i); + + /* Finish it for good */ + bsc_del_timer(&ptrans->sms.cp_timer); + ptrans->sms.cp_state = GSM411_CPS_IDLE; + trans_free(ptrans); + } + } + /* 5.2.3.1.3: MO state exists when SMC has received * CP-DATA, including sending of the assoc. CP-ACK */ /* 5.2.3.2.4: MT state exists when SMC has received |