diff options
author | Holger Hans Peter Freyther <zecke@selfish.org> | 2010-03-23 06:41:45 +0100 |
---|---|---|
committer | Holger Hans Peter Freyther <zecke@selfish.org> | 2010-03-25 09:07:28 +0100 |
commit | 68884aa156126e30e435fe4e2c5847340c61f0d3 (patch) | |
tree | 7d963601663fc7be7afc49cef3021191377e0837 /openbsc/src/gsm_04_08.c | |
parent | fe6bf777c3f76f4dc5835411828c9ebbdd7db83e (diff) |
lchan: Create a structure for MSC data of the lchan
Prepare to split the BSC and the MSC part by putting the
MSC data for a connection into a "gsm_subscriber_connection"
struct and renaming the macros.
Diffstat (limited to 'openbsc/src/gsm_04_08.c')
-rw-r--r-- | openbsc/src/gsm_04_08.c | 163 |
1 files changed, 91 insertions, 72 deletions
diff --git a/openbsc/src/gsm_04_08.c b/openbsc/src/gsm_04_08.c index 2eda0bd99..d3e487307 100644 --- a/openbsc/src/gsm_04_08.c +++ b/openbsc/src/gsm_04_08.c @@ -58,7 +58,7 @@ void *tall_locop_ctx; int gsm0408_loc_upd_acc(struct gsm_lchan *lchan, u_int32_t tmsi); static int gsm48_tx_simple(struct gsm_lchan *lchan, u_int8_t pdisc, u_int8_t msg_type); -static void schedule_reject(struct gsm_lchan *lchan); +static void schedule_reject(struct gsm_subscriber_connection *conn); struct gsm_lai { u_int16_t mcc; @@ -96,35 +96,35 @@ static int authorize_subscriber(struct gsm_loc_updating_operation *loc, } } -static void release_loc_updating_req(struct gsm_lchan *lchan) +static void release_loc_updating_req(struct gsm_subscriber_connection *conn) { - if (!lchan->loc_operation) + if (!conn->loc_operation) return; - bsc_del_timer(&lchan->loc_operation->updating_timer); - talloc_free(lchan->loc_operation); - lchan->loc_operation = 0; - put_lchan(lchan); + bsc_del_timer(&conn->loc_operation->updating_timer); + talloc_free(conn->loc_operation); + conn->loc_operation = 0; + put_subscr_con(conn); } -static void allocate_loc_updating_req(struct gsm_lchan *lchan) +static void allocate_loc_updating_req(struct gsm_subscriber_connection *conn) { - use_lchan(lchan); - release_loc_updating_req(lchan); + use_subscr_con(conn) + release_loc_updating_req(conn); - lchan->loc_operation = talloc_zero(tall_locop_ctx, + conn->loc_operation = talloc_zero(tall_locop_ctx, struct gsm_loc_updating_operation); } -static int gsm0408_authorize(struct gsm_lchan *lchan, struct msgb *msg) +static int gsm0408_authorize(struct gsm_subscriber_connection *conn, struct msgb *msg) { - if (authorize_subscriber(lchan->loc_operation, lchan->subscr)) { + if (authorize_subscriber(conn->loc_operation, conn->subscr)) { int rc; - db_subscriber_alloc_tmsi(lchan->subscr); - release_loc_updating_req(lchan); - rc = gsm0408_loc_upd_acc(msg->lchan, lchan->subscr->tmsi); - if (lchan->ts->trx->bts->network->send_mm_info) { + db_subscriber_alloc_tmsi(conn->subscr); + release_loc_updating_req(conn); + rc = gsm0408_loc_upd_acc(msg->lchan, conn->subscr->tmsi); + if (msg->lchan->ts->trx->bts->network->send_mm_info) { /* send MM INFO with network name */ rc = gsm48_tx_mm_info(msg->lchan); } @@ -132,10 +132,11 @@ static int gsm0408_authorize(struct gsm_lchan *lchan, struct msgb *msg) /* call subscr_update after putting the loc_upd_acc * in the transmit queue, since S_SUBSCR_ATTACHED might * trigger further action like SMS delivery */ - subscr_update(lchan->subscr, msg->trx->bts, + subscr_update(conn->subscr, msg->trx->bts, GSM_SUBSCRIBER_UPDATE_ATTACHED); + /* try to close channel ASAP */ - lchan_auto_release(lchan); + lchan_auto_release(conn->lchan); return rc; } @@ -158,7 +159,7 @@ static int gsm0408_handle_lchan_signal(unsigned int subsys, unsigned int signal, if (!lchan) return 0; - release_loc_updating_req(lchan); + release_loc_updating_req(&lchan->conn); /* Free all transactions that are associated with the released lchan */ /* FIXME: this is not neccessarily the right thing to do, we should @@ -175,11 +176,13 @@ static int gsm0408_handle_lchan_signal(unsigned int subsys, unsigned int signal, /* Chapter 9.2.14 : Send LOCATION UPDATING REJECT */ int gsm0408_loc_upd_rej(struct gsm_lchan *lchan, u_int8_t cause) { + struct gsm_subscriber_connection *conn; struct gsm_bts *bts = lchan->ts->trx->bts; struct msgb *msg = gsm48_msgb_alloc(); struct gsm48_hdr *gh; msg->lchan = lchan; + conn = &lchan->conn; gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh) + 1); gh->proto_discr = GSM48_PDISC_MM; @@ -187,8 +190,8 @@ int gsm0408_loc_upd_rej(struct gsm_lchan *lchan, u_int8_t cause) gh->data[0] = cause; LOGP(DMM, LOGL_INFO, "Subscriber %s: LOCATION UPDATING REJECT " - "LAC=%u BTS=%u\n", lchan->subscr ? - subscr_name(lchan->subscr) : "unknown", + "LAC=%u BTS=%u\n", conn->subscr ? + subscr_name(conn->subscr) : "unknown", lchan->ts->trx->bts->location_area_code, lchan->ts->trx->bts->nr); counter_inc(bts->network->stats.loc_upd_resp.reject); @@ -245,6 +248,7 @@ static int mm_tx_identity_req(struct gsm_lchan *lchan, u_int8_t id_type) /* Parse Chapter 9.2.11 Identity Response */ static int mm_rx_id_resp(struct msgb *msg) { + struct gsm_subscriber_connection *conn; struct gsm48_hdr *gh = msgb_l3(msg); struct gsm_lchan *lchan = msg->lchan; struct gsm_bts *bts = lchan->ts->trx->bts; @@ -256,51 +260,54 @@ static int mm_rx_id_resp(struct msgb *msg) DEBUGP(DMM, "IDENTITY RESPONSE: mi_type=0x%02x MI(%s)\n", mi_type, mi_string); + conn = &lchan->conn; + dispatch_signal(SS_SUBSCR, S_SUBSCR_IDENTITY, gh->data); switch (mi_type) { case GSM_MI_TYPE_IMSI: /* look up subscriber based on IMSI, create if not found */ - if (!lchan->subscr) { - lchan->subscr = subscr_get_by_imsi(net, mi_string); - if (!lchan->subscr) - lchan->subscr = db_create_subscriber(net, mi_string); + if (!conn->subscr) { + conn->subscr = subscr_get_by_imsi(net, mi_string); + if (!conn->subscr) + conn->subscr = db_create_subscriber(net, mi_string); } - if (lchan->loc_operation) - lchan->loc_operation->waiting_for_imsi = 0; + if (conn->loc_operation) + conn->loc_operation->waiting_for_imsi = 0; break; case GSM_MI_TYPE_IMEI: case GSM_MI_TYPE_IMEISV: /* update subscribe <-> IMEI mapping */ - if (lchan->subscr) { - db_subscriber_assoc_imei(lchan->subscr, mi_string); - db_sync_equipment(&lchan->subscr->equipment); + if (conn->subscr) { + db_subscriber_assoc_imei(conn->subscr, mi_string); + db_sync_equipment(&conn->subscr->equipment); } - if (lchan->loc_operation) - lchan->loc_operation->waiting_for_imei = 0; + if (conn->loc_operation) + conn->loc_operation->waiting_for_imei = 0; break; } /* Check if we can let the mobile station enter */ - return gsm0408_authorize(lchan, msg); + return gsm0408_authorize(conn, msg); } static void loc_upd_rej_cb(void *data) { - struct gsm_lchan *lchan = data; + struct gsm_subscriber_connection *conn = data; + struct gsm_lchan *lchan = conn->lchan; struct gsm_bts *bts = lchan->ts->trx->bts; - release_loc_updating_req(lchan); + release_loc_updating_req(conn); gsm0408_loc_upd_rej(lchan, bts->network->reject_cause); lchan_auto_release(lchan); } -static void schedule_reject(struct gsm_lchan *lchan) +static void schedule_reject(struct gsm_subscriber_connection *conn) { - lchan->loc_operation->updating_timer.cb = loc_upd_rej_cb; - lchan->loc_operation->updating_timer.data = lchan; - bsc_schedule_timer(&lchan->loc_operation->updating_timer, 5, 0); + conn->loc_operation->updating_timer.cb = loc_upd_rej_cb; + conn->loc_operation->updating_timer.data = conn; + bsc_schedule_timer(&conn->loc_operation->updating_timer, 5, 0); } static const char *lupd_name(u_int8_t type) @@ -320,6 +327,7 @@ static const char *lupd_name(u_int8_t type) /* Chapter 9.2.15: Receive Location Updating Request */ static int mm_rx_loc_upd_req(struct msgb *msg) { + struct gsm_subscriber_connection *conn; struct gsm48_hdr *gh = msgb_l3(msg); struct gsm48_loc_upd_req *lu; struct gsm_subscriber *subscr = NULL; @@ -330,6 +338,7 @@ static int mm_rx_loc_upd_req(struct msgb *msg) int rc; lu = (struct gsm48_loc_upd_req *) gh->data; + conn = &lchan->conn; mi_type = lu->mi[0] & GSM_MI_TYPE_MASK; @@ -356,21 +365,21 @@ static int mm_rx_loc_upd_req(struct msgb *msg) * Pseudo Spoof detection: Just drop a second/concurrent * location updating request. */ - if (lchan->loc_operation) { + if (conn->loc_operation) { DEBUGPC(DMM, "ignoring request due an existing one: %p.\n", - lchan->loc_operation); + conn->loc_operation); gsm0408_loc_upd_rej(lchan, GSM48_REJECT_PROTOCOL_ERROR); return 0; } - allocate_loc_updating_req(lchan); + allocate_loc_updating_req(&lchan->conn); switch (mi_type) { case GSM_MI_TYPE_IMSI: DEBUGPC(DMM, "\n"); /* we always want the IMEI, too */ rc = mm_tx_identity_req(lchan, GSM_MI_TYPE_IMEI); - lchan->loc_operation->waiting_for_imei = 1; + conn->loc_operation->waiting_for_imei = 1; /* look up subscriber based on IMSI, create if not found */ subscr = subscr_get_by_imsi(bts->network, mi_string); @@ -382,7 +391,7 @@ static int mm_rx_loc_upd_req(struct msgb *msg) DEBUGPC(DMM, "\n"); /* we always want the IMEI, too */ rc = mm_tx_identity_req(lchan, GSM_MI_TYPE_IMEI); - lchan->loc_operation->waiting_for_imei = 1; + conn->loc_operation->waiting_for_imei = 1; /* look up the subscriber based on TMSI, request IMSI if it fails */ subscr = subscr_get_by_tmsi(bts->network, @@ -390,7 +399,7 @@ static int mm_rx_loc_upd_req(struct msgb *msg) if (!subscr) { /* send IDENTITY REQUEST message to get IMSI */ rc = mm_tx_identity_req(lchan, GSM_MI_TYPE_IMSI); - lchan->loc_operation->waiting_for_imsi = 1; + conn->loc_operation->waiting_for_imsi = 1; } break; case GSM_MI_TYPE_IMEI: @@ -404,7 +413,7 @@ static int mm_rx_loc_upd_req(struct msgb *msg) } /* schedule the reject timer */ - schedule_reject(lchan); + schedule_reject(conn); if (!subscr) { DEBUGPC(DRR, "<- Can't find any subscriber for this ID\n"); @@ -412,12 +421,12 @@ static int mm_rx_loc_upd_req(struct msgb *msg) return -EINVAL; } - lchan->subscr = subscr; - lchan->subscr->equipment.classmark1 = lu->classmark1; + conn->subscr = subscr; + conn->subscr->equipment.classmark1 = lu->classmark1; /* check if we can let the subscriber into our network immediately * or if we need to wait for identity responses. */ - return gsm0408_authorize(lchan, msg); + return gsm0408_authorize(conn, msg); } #if 0 @@ -566,7 +575,7 @@ static int gsm48_tx_mm_serv_ack(struct gsm_lchan *lchan) } /* 9.2.6 CM service reject */ -static int gsm48_tx_mm_serv_rej(struct gsm_lchan *lchan, +static int gsm48_tx_mm_serv_rej(struct gsm_subscriber_connection *conn, enum gsm48_reject_value value) { struct msgb *msg = gsm48_msgb_alloc(); @@ -574,8 +583,8 @@ static int gsm48_tx_mm_serv_rej(struct gsm_lchan *lchan, gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh) + 1); - msg->lchan = lchan; - use_lchan(lchan); + msg->lchan = conn->lchan; + use_subscr_con(conn); gh->proto_discr = GSM48_PDISC_MM; gh->msg_type = GSM48_MT_MM_CM_SERV_REJ; @@ -613,20 +622,20 @@ static int gsm48_rx_mm_serv_req(struct msgb *msg) DEBUGP(DMM, "<- CM SERVICE REQUEST "); if (msg->data_len < sizeof(struct gsm48_service_request*)) { DEBUGPC(DMM, "wrong sized message\n"); - return gsm48_tx_mm_serv_rej(msg->lchan, + return gsm48_tx_mm_serv_rej(&msg->lchan->conn, GSM48_REJECT_INCORRECT_MESSAGE); } if (msg->data_len < req->mi_len + 6) { DEBUGPC(DMM, "does not fit in packet\n"); - return gsm48_tx_mm_serv_rej(msg->lchan, + return gsm48_tx_mm_serv_rej(&msg->lchan->conn, GSM48_REJECT_INCORRECT_MESSAGE); } mi_type = mi[0] & GSM_MI_TYPE_MASK; if (mi_type != GSM_MI_TYPE_TMSI) { DEBUGPC(DMM, "mi_type is not TMSI: %d\n", mi_type); - return gsm48_tx_mm_serv_rej(msg->lchan, + return gsm48_tx_mm_serv_rej(&msg->lchan->conn, GSM48_REJECT_INCORRECT_MESSAGE); } @@ -644,12 +653,12 @@ static int gsm48_rx_mm_serv_req(struct msgb *msg) /* FIXME: if we don't know the TMSI, inquire abit IMSI and allocate new TMSI */ if (!subscr) - return gsm48_tx_mm_serv_rej(msg->lchan, + return gsm48_tx_mm_serv_rej(&msg->lchan->conn, GSM48_REJECT_IMSI_UNKNOWN_IN_HLR); - if (!msg->lchan->subscr) - msg->lchan->subscr = subscr; - else if (msg->lchan->subscr == subscr) + if (!msg->lchan->conn.subscr) + msg->lchan->conn.subscr = subscr; + else if (msg->lchan->conn.subscr == subscr) subscr_put(subscr); /* lchan already has a ref, don't need another one */ else { DEBUGP(DMM, "<- CM Channel already owned by someone else?\n"); @@ -749,8 +758,8 @@ static int gsm0408_rcv_mm(struct msgb *msg) break; case GSM48_MT_MM_TMSI_REALL_COMPL: DEBUGP(DMM, "TMSI Reallocation Completed. Subscriber: %s\n", - msg->lchan->subscr ? - subscr_name(msg->lchan->subscr) : + msg->lchan->conn.subscr ? + subscr_name(msg->lchan->conn.subscr) : "unknown subscriber"); break; case GSM48_MT_MM_IMSI_DETACH_IND: @@ -815,7 +824,7 @@ static int gsm48_rx_rr_pag_resp(struct msgb *msg) static int gsm48_rx_rr_classmark(struct msgb *msg) { struct gsm48_hdr *gh = msgb_l3(msg); - struct gsm_subscriber *subscr = msg->lchan->subscr; + struct gsm_subscriber *subscr = msg->lchan->conn.subscr; unsigned int payload_len = msgb_l3len(msg) - sizeof(*gh); u_int8_t cm2_len, cm3_len = 0; u_int8_t *cm2, *cm3 = NULL; @@ -896,7 +905,7 @@ static int gsm48_rx_rr_app_info(struct msgb *msg) DEBUGP(DNM, "RX APPLICATION INFO id/flags=0x%02x apdu_len=%u apdu=%s", apdu_id_flags, apdu_len, hexdump(apdu_data, apdu_len)); - return db_apdu_blob_store(msg->lchan->subscr, apdu_id_flags, apdu_len, apdu_data); + return db_apdu_blob_store(msg->lchan->conn.subscr, apdu_id_flags, apdu_len, apdu_data); } /* Chapter 9.1.16 Handover complete */ @@ -1130,6 +1139,7 @@ static int setup_trig_pag_evt(unsigned int hooknum, unsigned int event, struct gsm_subscriber *subscr = param; struct gsm_trans *transt, *tmp; struct gsm_network *net; + struct gsm_subscriber_connection *conn; if (hooknum != GSM_HOOK_RR_PAGING) return -EINVAL; @@ -1142,6 +1152,8 @@ static int setup_trig_pag_evt(unsigned int hooknum, unsigned int event, return -EINVAL; } + conn = &lchan->conn; + /* check all tranactions (without lchan) for subscriber */ llist_for_each_entry_safe(transt, tmp, &net->trans_list, entry) { if (transt->subscr != subscr || transt->lchan) @@ -1155,7 +1167,7 @@ static int setup_trig_pag_evt(unsigned int hooknum, unsigned int event, /* Assign lchan */ if (!transt->lchan) { transt->lchan = lchan; - use_lchan(lchan); + use_subscr_con(conn); } /* send SETUP request to called party */ gsm48_cc_tx_setup(transt, &transt->cc.msg); @@ -2562,6 +2574,7 @@ int mncc_send(struct gsm_network *net, int msg_type, void *arg) struct gsm_lchan *lchan = NULL; struct gsm_bts *bts = NULL; struct gsm_mncc *data = arg, rel; + struct gsm_subscriber_connection *conn; /* handle special messages */ switch(msg_type) { @@ -2665,6 +2678,7 @@ int mncc_send(struct gsm_network *net, int msg_type, void *arg) } /* Find lchan */ lchan = lchan_for_subscr(subscr); + /* If subscriber has no lchan */ if (!lchan) { /* find transaction with this subscriber already paging */ @@ -2693,7 +2707,8 @@ int mncc_send(struct gsm_network *net, int msg_type, void *arg) } /* Assign lchan */ trans->lchan = lchan; - use_lchan(lchan); + conn = &lchan->conn; + use_subscr_con(conn); subscr_put(subscr); } lchan = trans->lchan; @@ -2715,11 +2730,12 @@ int mncc_send(struct gsm_network *net, int msg_type, void *arg) return rc; } + conn = &lchan->conn; DEBUGP(DCC, "(bts %d trx %d ts %d ti %02x sub %s) " "Received '%s' from MNCC in state %d (%s)\n", lchan->ts->trx->bts->nr, lchan->ts->trx->nr, lchan->ts->nr, trans->transaction_id, - (lchan->subscr)?(lchan->subscr->extension):"-", + (conn->subscr)?(conn->subscr->extension):"-", get_mncc_name(msg_type), trans->cc.state, gsm48_cc_state_name(trans->cc.state)); @@ -2795,6 +2811,7 @@ static struct datastate { static int gsm0408_rcv_cc(struct msgb *msg) { + struct gsm_subscriber_connection *conn; struct gsm48_hdr *gh = msgb_l3(msg); u_int8_t msg_type = gh->msg_type & 0xbf; u_int8_t transaction_id = ((gh->proto_discr & 0xf0) ^ 0x80) >> 4; /* flip */ @@ -2806,14 +2823,16 @@ static int gsm0408_rcv_cc(struct msgb *msg) DEBUGP(DCC, "MSG 0x%2x not defined for PD error\n", msg_type); return -EINVAL; } - + + conn = &lchan->conn; + /* Find transaction */ - trans = trans_find_by_id(lchan->subscr, GSM48_PDISC_CC, transaction_id); + trans = trans_find_by_id(conn->subscr, GSM48_PDISC_CC, transaction_id); DEBUGP(DCC, "(bts %d trx %d ts %d ti %x sub %s) " "Received '%s' from MS in state %d (%s)\n", lchan->ts->trx->bts->nr, lchan->ts->trx->nr, lchan->ts->nr, - transaction_id, (lchan->subscr)?(lchan->subscr->extension):"-", + transaction_id, (conn->subscr)?(conn->subscr->extension):"-", gsm48_cc_msg_name(msg_type), trans?(trans->cc.state):0, gsm48_cc_state_name(trans?(trans->cc.state):0)); @@ -2822,7 +2841,7 @@ static int gsm0408_rcv_cc(struct msgb *msg) DEBUGP(DCC, "Unknown transaction ID %x, " "creating new trans.\n", transaction_id); /* Create transaction */ - trans = trans_alloc(lchan->subscr, GSM48_PDISC_CC, + trans = trans_alloc(conn->subscr, GSM48_PDISC_CC, transaction_id, new_callref++); if (!trans) { DEBUGP(DCC, "No memory for trans.\n"); @@ -2833,7 +2852,7 @@ static int gsm0408_rcv_cc(struct msgb *msg) } /* Assign transaction */ trans->lchan = lchan; - use_lchan(lchan); + use_subscr_con(conn); } /* find function for current state and message */ |