diff options
Diffstat (limited to 'src/xua_asp_fsm.c')
| -rw-r--r-- | src/xua_asp_fsm.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/src/xua_asp_fsm.c b/src/xua_asp_fsm.c index e4fb928..5fe1d80 100644 --- a/src/xua_asp_fsm.c +++ b/src/xua_asp_fsm.c @@ -964,6 +964,7 @@ static void ipa_asp_fsm_wait_id_get(struct osmo_fsm_inst *fi, uint32_t event, vo struct msgb *msg_get, *msg_resp; const uint8_t *req_data; int data_len; + int fd; switch (event) { case IPA_ASP_E_ID_GET: @@ -986,6 +987,16 @@ static void ipa_asp_fsm_wait_id_get(struct osmo_fsm_inst *fi, uint32_t event, vo osmo_ss7_asp_send(asp, msg_resp); osmo_fsm_inst_state_chg(fi, IPA_ASP_S_WAIT_ID_ACK, 10, T_WAIT_ID_ACK); break; + case IPA_ASP_E_ID_ACK: + /* Some SCCPLite MSCs are known to send an ACK directly instead + * of GET. Support them and skip the GET+RESP handshake by + * sending ACK2 to server directly */ + fd = get_fd_from_iafp(iafp); + if (fd >= 0) { + ipaccess_send_id_ack(fd); + osmo_fsm_inst_state_chg(fi, IPA_ASP_S_ACTIVE, 0, 0); + } + break; } } @@ -1114,8 +1125,10 @@ static const struct osmo_fsm_state ipa_asp_states[] = { }, /* Client Side */ [IPA_ASP_S_WAIT_ID_GET] = { - .in_event_mask = S(IPA_ASP_E_ID_GET), - .out_state_mask = S(IPA_ASP_S_WAIT_ID_ACK), + .in_event_mask = S(IPA_ASP_E_ID_GET) | + S(IPA_ASP_E_ID_ACK), /* support broken MSCs skipping GET+RESP */ + .out_state_mask = S(IPA_ASP_S_WAIT_ID_ACK) | + S(IPA_ASP_S_ACTIVE), /* support broken MSCs skipping GET+RESP */ .name = "WAIT_ID_GET", .action = ipa_asp_fsm_wait_id_get, }, |