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Harald Welte gerrit-no-reply at lists.osmocom.orgHello Jenkins Builder, I'd like you to reexamine a change. Please visit https://gerrit.osmocom.org/6526 to look at the new patch set (#3). BSSGP_Emulation: Remove one level of indent (like most other code) Change-Id: I1d6de5404dbf907f663ec89b1847c6de84d5d858 --- M library/BSSGP_Emulation.ttcn 1 file changed, 226 insertions(+), 223 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/26/6526/3 diff --git a/library/BSSGP_Emulation.ttcn b/library/BSSGP_Emulation.ttcn index 52649ef..b41cd25 100644 --- a/library/BSSGP_Emulation.ttcn +++ b/library/BSSGP_Emulation.ttcn @@ -1,253 +1,256 @@ module BSSGP_Emulation { - import from NS_Types all; - import from NS_Emulation all; - import from BSSGP_Types all; - import from Osmocom_Gb_Types all; - import from IPL4asp_Types all; - type record BssgpStatusIndication { - Nsei nsei, - BssgpBvci bvci, - BvcState state - } +import from NS_Types all; +import from NS_Emulation all; +import from BSSGP_Types all; +import from Osmocom_Gb_Types all; +import from IPL4asp_Types all; - template BssgpStatusIndication t_BssgpStsInd(template Nsei nsei, template BssgpBvci bvci, template BvcState state) := { - nsei := nsei, +type record BssgpStatusIndication { + Nsei nsei, + BssgpBvci bvci, + BvcState state +} + +template BssgpStatusIndication t_BssgpStsInd(template Nsei nsei, template BssgpBvci bvci, template BvcState state) := { + nsei := nsei, + bvci := bvci, + state := state +} + +type enumerated BvcState { + BVC_S_BLOCKED, + BVC_S_UNBLOCKED +}; + +/* port from our (internal) point of view */ +type port BSSGP_SP_PT message { + in PDU_BSSGP; + out PDU_BSSGP, + NsStatusIndication, + BssgpStatusIndication, + ASP_Event; +} with { extension "internal" }; + +/* port from the user point of view */ +type port BSSGP_PT message { + in ASP_Event, + NsStatusIndication, + BssgpStatusIndication, + PDU_BSSGP; + out PDU_BSSGP; +} with { extension "internal" }; + +function BssgpStart(boolean sgsn_role := false) runs on BSSGP_CT { + g_sgsn_role := sgsn_role + f_init(); + f_ScanEvents(); +} + +private function f_init() runs on BSSGP_CT { + /* Connect the UDP socket */ + f_change_state(BVC_S_BLOCKED); +} + +type component BSSGP_CT { + /* UDP port towards the bottom (IUT) */ + port NS_PT BSCP; + /* NS-User SAP towards the user */ + port BSSGP_SP_PT BSSGP_SP; + + var boolean g_sgsn_role := true; + var BvcState g_ptp_bvc_state := BVC_S_BLOCKED; + timer g_T1 := 15.0; + timer g_T2 := 60.0; +} + +modulepar { + Nsvci mp_nsei := 96; + Nsvci mp_bvci := 196; + BssgpCellId mp_cellid := { ra_id := { lai := { mcc_mnc := '26242F'H, lac := 13135}, rac := 0 }, cell_id := 20960 }; +}; + +function f_BnsUdReq(template PDU_BSSGP pdu, BssgpBvci bvci := mp_bvci) return NsUnitdataRequest { + var NsUnitdataRequest udr := { bvci := bvci, - state := state + nsei := mp_nsei, + /* for some weird reason we get "Dynamic test case error: Text encoder: Encoding an + * unbound integer value." when trying to send the reocrd rather than the octetstring */ + //sdu := omit, + //bssgp := valueof(pdu) + sdu := enc_PDU_BSSGP(valueof(pdu)), + bssgp := omit + } + return udr; +} + +function f_BnsUdInd(template PDU_BSSGP pdu, template BssgpBvci bvci := mp_bvci) return template NsUnitdataIndication { + var template NsUnitdataIndication udi := { + bvci := bvci, + nsei := mp_nsei, + sdu := *, + bssgp := pdu + } + return udi; +} + +private function f_change_state(BvcState new_state) runs on BSSGP_CT { + log("BSSGP State Transition: ", g_ptp_bvc_state, " -> ", new_state); + g_ptp_bvc_state := new_state; + BSSGP_SP.send(t_BssgpStsInd(mp_nsei, mp_bvci, g_ptp_bvc_state)); +} + +private function f_sendReset() runs on BSSGP_CT { + var PDU_BSSGP pdu := valueof(ts_BVC_RESET(BSSGP_CAUSE_OM_INTERVENTION, mp_bvci, mp_cellid)); + log("PDU: ", pdu); + log("ENC: ", enc_PDU_BSSGP(pdu)); + + /* BVC-RESET is always sent via the SIGNALLING BVCI, see Table 5.4.1 */ + BSCP.send(f_BnsUdReq(pdu, 0)); + g_T2.start; + //f_change_state(BVC_S_WAIT_RESET); +} + +private function f_sendUnblock() runs on BSSGP_CT { + BSCP.send(f_BnsUdReq(t_BVC_UNBLOCK(mp_bvci), 0)); + g_T1.start; +} + +private function f_sendBlock(BssgpCause cause) runs on BSSGP_CT { + BSCP.send(f_BnsUdReq(t_BVC_BLOCK(mp_bvci, cause), 0)); + g_T1.start; +} + +private function f_sendStatus(BssgpCause cause, PDU_BSSGP pdu) runs on BSSGP_CT { + /* FIXME: Make sure correct Signaling or PTP BVCI is used! */ + BSCP.send(f_BnsUdReq(ts_BSSGP_STATUS(mp_bvci, cause, pdu))); +} + +altstep as_allstate() runs on BSSGP_CT { + var NsUnitdataIndication udi; + var NsStatusIndication nsi; + var ASP_Event evt; + + /* Respond to BLOCK for wrong NSVCI */ + [] BSCP.receive(f_BnsUdInd(t_BVC_BLOCK(?, ?), 0)) -> value udi { + log("Rx BVC-BLOCK for unknown BVCI"); + f_sendStatus(BSSGP_CAUSE_BVCI_UNKNOWN, udi.bssgp); } - type enumerated BvcState { - BVC_S_BLOCKED, - BVC_S_UNBLOCKED - }; - - /* port from our (internal) point of view */ - type port BSSGP_SP_PT message { - in PDU_BSSGP; - out PDU_BSSGP, - NsStatusIndication, - BssgpStatusIndication, - ASP_Event; - } with { extension "internal" }; - - /* port from the user point of view */ - type port BSSGP_PT message { - in ASP_Event, - NsStatusIndication, - BssgpStatusIndication, - PDU_BSSGP; - out PDU_BSSGP; - } with { extension "internal" }; - - function BssgpStart(boolean sgsn_role := false) runs on BSSGP_CT { - g_sgsn_role := sgsn_role - f_init(); - f_ScanEvents(); + /* Respond to RESET with correct BVCI/CellID */ + [] BSCP.receive(f_BnsUdInd(tr_BVC_RESET(?, mp_bvci, mp_cellid), 0)) -> value udi { + log("Rx BVC-RESET for Our BVCI=", mp_bvci); + BSCP.send(f_BnsUdReq(ts_BVC_RESET_ACK(mp_bvci, mp_cellid), 0)); + f_change_state(BVC_S_UNBLOCKED); } - private function f_init() runs on BSSGP_CT { - /* Connect the UDP socket */ - f_change_state(BVC_S_BLOCKED); + /* Respond to RESET for signalling BVCI 0 */ + [] BSCP.receive(f_BnsUdInd(tr_BVC_RESET(?, 0, mp_cellid), 0)) -> value udi { + log("Rx BVC-RESET for Signaling BVCI=0"); + BSCP.send(f_BnsUdReq(ts_BVC_RESET_ACK(0, mp_cellid), 0)); } - type component BSSGP_CT { - /* UDP port towards the bottom (IUT) */ - port NS_PT BSCP; - /* NS-User SAP towards the user */ - port BSSGP_SP_PT BSSGP_SP; - - var boolean g_sgsn_role := true; - var BvcState g_ptp_bvc_state := BVC_S_BLOCKED; - timer g_T1 := 15.0; - timer g_T2 := 60.0; + /* Respond to RESET with wrong NSEI/NSVCI */ + [] BSCP.receive(f_BnsUdInd(tr_BVC_RESET(?, ?, ?), 0)) -> value udi { + log("Rx BVC-RESET for unknown BVCI"); + f_sendStatus(BSSGP_CAUSE_BVCI_UNKNOWN, udi.bssgp); } - modulepar { - Nsvci mp_nsei := 96; - Nsvci mp_bvci := 196; - BssgpCellId mp_cellid := { ra_id := { lai := { mcc_mnc := '26242F'H, lac := 13135}, rac := 0 }, cell_id := 20960 }; - }; - - function f_BnsUdReq(template PDU_BSSGP pdu, BssgpBvci bvci := mp_bvci) return NsUnitdataRequest { - var NsUnitdataRequest udr := { - bvci := bvci, - nsei := mp_nsei, - /* for some weird reason we get "Dynamic test case error: Text encoder: Encoding an - * unbound integer value." when trying to send the reocrd rather than the octetstring */ - //sdu := omit, - //bssgp := valueof(pdu) - sdu := enc_PDU_BSSGP(valueof(pdu)), - bssgp := omit - } - return udr; + /* default case of handling unknown PDUs */ + [] BSCP.receive(f_BnsUdInd(?, ?)) -> value udi { + log("Rx Unexpected BSSGP PDU ", udi.bssgp," in state ", g_ptp_bvc_state); + f_sendStatus(BSSGP_CAUSE_PDU_NOT_COMPATIBLE_WITH_PROTOCOL_STATE, udi.bssgp); } - - function f_BnsUdInd(template PDU_BSSGP pdu, template BssgpBvci bvci := mp_bvci) return template NsUnitdataIndication { - var template NsUnitdataIndication udi := { - bvci := bvci, - nsei := mp_nsei, - sdu := *, - bssgp := pdu - } - return udi; - } - - private function f_change_state(BvcState new_state) runs on BSSGP_CT { - log("BSSGP State Transition: ", g_ptp_bvc_state, " -> ", new_state); - g_ptp_bvc_state := new_state; - BSSGP_SP.send(t_BssgpStsInd(mp_nsei, mp_bvci, g_ptp_bvc_state)); - } - - private function f_sendReset() runs on BSSGP_CT { - var PDU_BSSGP pdu := valueof(ts_BVC_RESET(BSSGP_CAUSE_OM_INTERVENTION, mp_bvci, mp_cellid)); - log("PDU: ", pdu); - log("ENC: ", enc_PDU_BSSGP(pdu)); - - /* BVC-RESET is always sent via the SIGNALLING BVCI, see Table 5.4.1 */ - BSCP.send(f_BnsUdReq(pdu, 0)); - g_T2.start; - //f_change_state(BVC_S_WAIT_RESET); - } - - private function f_sendUnblock() runs on BSSGP_CT { - BSCP.send(f_BnsUdReq(t_BVC_UNBLOCK(mp_bvci), 0)); - g_T1.start; - } - - private function f_sendBlock(BssgpCause cause) runs on BSSGP_CT { - BSCP.send(f_BnsUdReq(t_BVC_BLOCK(mp_bvci, cause), 0)); - g_T1.start; - } - - private function f_sendStatus(BssgpCause cause, PDU_BSSGP pdu) runs on BSSGP_CT { - /* FIXME: Make sure correct Signaling or PTP BVCI is used! */ - BSCP.send(f_BnsUdReq(ts_BSSGP_STATUS(mp_bvci, cause, pdu))); - } - - altstep as_allstate() runs on BSSGP_CT { - var NsUnitdataIndication udi; - var NsStatusIndication nsi; - var ASP_Event evt; - - /* Respond to BLOCK for wrong NSVCI */ - [] BSCP.receive(f_BnsUdInd(t_BVC_BLOCK(?, ?), 0)) -> value udi { - log("Rx BVC-BLOCK for unknown BVCI"); - f_sendStatus(BSSGP_CAUSE_BVCI_UNKNOWN, udi.bssgp); - } - - /* Respond to RESET with correct BVCI/CellID */ - [] BSCP.receive(f_BnsUdInd(tr_BVC_RESET(?, mp_bvci, mp_cellid), 0)) -> value udi { - log("Rx BVC-RESET for Our BVCI=", mp_bvci); - BSCP.send(f_BnsUdReq(ts_BVC_RESET_ACK(mp_bvci, mp_cellid), 0)); - f_change_state(BVC_S_UNBLOCKED); - } - - /* Respond to RESET for signalling BVCI 0 */ - [] BSCP.receive(f_BnsUdInd(tr_BVC_RESET(?, 0, mp_cellid), 0)) -> value udi { - log("Rx BVC-RESET for Signaling BVCI=0"); - BSCP.send(f_BnsUdReq(ts_BVC_RESET_ACK(0, mp_cellid), 0)); - } - - /* Respond to RESET with wrong NSEI/NSVCI */ - [] BSCP.receive(f_BnsUdInd(tr_BVC_RESET(?, ?, ?), 0)) -> value udi { - log("Rx BVC-RESET for unknown BVCI"); - f_sendStatus(BSSGP_CAUSE_BVCI_UNKNOWN, udi.bssgp); - } - - /* default case of handling unknown PDUs */ - [] BSCP.receive(f_BnsUdInd(?, ?)) -> value udi { - log("Rx Unexpected BSSGP PDU ", udi.bssgp," in state ", g_ptp_bvc_state); - f_sendStatus(BSSGP_CAUSE_PDU_NOT_COMPATIBLE_WITH_PROTOCOL_STATE, udi.bssgp); - } - /* Forwarding of ASP_Event and NsStatusIndication to user */ - [] BSCP.receive(ASP_Event:?) -> value evt { BSSGP_SP.send(evt); } - [] BSCP.receive(NsStatusIndication:?) -> value nsi { - /* if we just became NS-unblocked, send a BCC-RESET */ - if (nsi.old_state != NSE_S_ALIVE_UNBLOCKED and nsi.new_state == NSE_S_ALIVE_UNBLOCKED) { - if (g_sgsn_role == false) { - f_sendReset(); - } - /* Idea: We coudl send BVC-UNBLOCK here like some SGSN do */ + /* Forwarding of ASP_Event and NsStatusIndication to user */ + [] BSCP.receive(ASP_Event:?) -> value evt { BSSGP_SP.send(evt); } + [] BSCP.receive(NsStatusIndication:?) -> value nsi { + /* if we just became NS-unblocked, send a BCC-RESET */ + if (nsi.old_state != NSE_S_ALIVE_UNBLOCKED and nsi.new_state == NSE_S_ALIVE_UNBLOCKED) { + if (g_sgsn_role == false) { + f_sendReset(); } - BSSGP_SP.send(nsi); + /* Idea: We coudl send BVC-UNBLOCK here like some SGSN do */ } + BSSGP_SP.send(nsi); } +} - private function f_ScanEvents() runs on BSSGP_CT { - var NsUnitdataIndication udi; - var PDU_BSSGP bs_pdu; - var default d; +private function f_ScanEvents() runs on BSSGP_CT { + var NsUnitdataIndication udi; + var PDU_BSSGP bs_pdu; + var default d; - log("matching against ", tr_BVC_RESET(?, mp_bvci, mp_cellid)); + log("matching against ", tr_BVC_RESET(?, mp_bvci, mp_cellid)); - d := activate(as_allstate()); + d := activate(as_allstate()); - while (true) { - if (g_ptp_bvc_state == BVC_S_BLOCKED) { - alt { - [] g_T1.timeout { - f_sendUnblock(); - } - [] BSCP.receive(f_BnsUdInd(t_BVC_UNBLOCK_ACK(mp_bvci), 0)) { - g_T1.stop; - f_change_state(BVC_S_UNBLOCKED); - } - [not g_sgsn_role] BSCP.receive(f_BnsUdInd(tr_BVC_RESET_ACK(mp_bvci, omit), 0)) { - f_sendUnblock(); - } + while (true) { + if (g_ptp_bvc_state == BVC_S_BLOCKED) { + alt { + [] g_T1.timeout { + f_sendUnblock(); } - } else if (g_ptp_bvc_state == BVC_S_UNBLOCKED) { - alt { - /* bogus unblock, just respond with ACK */ - [] BSCP.receive(f_BnsUdInd(t_BVC_UNBLOCK(mp_bvci), 0)) -> value udi { - BSCP.send(f_BnsUdReq(t_BVC_UNBLOCK_ACK(mp_bvci), 0)); - } - /* Respond to BLOCK with BLOCK-ACK + change state */ - [] BSCP.receive(f_BnsUdInd(t_BVC_BLOCK(mp_bvci, ?), 0)) -> value udi { - BSCP.send(f_BnsUdReq(t_BVC_BLOCK_ACK(mp_bvci), 0)); - g_T1.stop; - f_change_state(BVC_S_BLOCKED); - } - [] g_T1.timeout { - f_sendBlock(BSSGP_CAUSE_OM_INTERVENTION); - } - [] BSCP.receive(f_BnsUdInd(t_BVC_BLOCK_ACK(mp_bvci), 0)) -> value udi { - g_T1.stop; - f_change_state(BVC_S_BLOCKED); - } - [] BSCP.receive(f_BnsUdInd(tr_BVC_RESET_ACK(mp_bvci, mp_cellid), 0)) -> value udi { - g_T2.stop; - f_change_state(BVC_S_UNBLOCKED); - } + [] BSCP.receive(f_BnsUdInd(t_BVC_UNBLOCK_ACK(mp_bvci), 0)) { + g_T1.stop; + f_change_state(BVC_S_UNBLOCKED); + } + [not g_sgsn_role] BSCP.receive(f_BnsUdInd(tr_BVC_RESET_ACK(mp_bvci, omit), 0)) { + f_sendUnblock(); + } + } + } else if (g_ptp_bvc_state == BVC_S_UNBLOCKED) { + alt { + /* bogus unblock, just respond with ACK */ + [] BSCP.receive(f_BnsUdInd(t_BVC_UNBLOCK(mp_bvci), 0)) -> value udi { + BSCP.send(f_BnsUdReq(t_BVC_UNBLOCK_ACK(mp_bvci), 0)); + } + /* Respond to BLOCK with BLOCK-ACK + change state */ + [] BSCP.receive(f_BnsUdInd(t_BVC_BLOCK(mp_bvci, ?), 0)) -> value udi { + BSCP.send(f_BnsUdReq(t_BVC_BLOCK_ACK(mp_bvci), 0)); + g_T1.stop; + f_change_state(BVC_S_BLOCKED); + } + [] g_T1.timeout { + f_sendBlock(BSSGP_CAUSE_OM_INTERVENTION); + } + [] BSCP.receive(f_BnsUdInd(t_BVC_BLOCK_ACK(mp_bvci), 0)) -> value udi { + g_T1.stop; + f_change_state(BVC_S_BLOCKED); + } + [] BSCP.receive(f_BnsUdInd(tr_BVC_RESET_ACK(mp_bvci, mp_cellid), 0)) -> value udi { + g_T2.stop; + f_change_state(BVC_S_UNBLOCKED); + } - /* simply acknowledge all Flow Control Messages */ + /* simply acknowledge all Flow Control Messages */ /* - [g_sgsn_role] BSCP.receive(f_BnsUdInd(t_BVC_FC_BVC)) { - BSCP.send(f_BnsUdReq(t_BVC_FC_BVC_ACK)); - } - [g_sgsn_role] BSCP.receive(f_BnsUdInd(t_BVC_FC_MS)) { - BSCP.send(f_BnsUdReq(t_BVC_FC_MS_ACK)); - } + [g_sgsn_role] BSCP.receive(f_BnsUdInd(t_BVC_FC_BVC)) { + BSCP.send(f_BnsUdReq(t_BVC_FC_BVC_ACK)); + } + [g_sgsn_role] BSCP.receive(f_BnsUdInd(t_BVC_FC_MS)) { + BSCP.send(f_BnsUdReq(t_BVC_FC_MS_ACK)); + } */ - /* BSSGP-UNITDATA PDUs from network to NS-UNITDATA.ind to user */ - [not g_sgsn_role] BSCP.receive(f_BnsUdInd(tr_BSSGP_DL_UD)) -> value udi { - BSSGP_SP.send(udi.bssgp); - } - [g_sgsn_role] BSCP.receive(f_BnsUdInd(tr_BSSGP_UL_UD)) -> value udi { - BSSGP_SP.send(udi.bssgp); - } - /* pass virtually any PDU from user to NS-UNITDATA PDU on network */ - [] BSSGP_SP.receive(PDU_BSSGP:?) -> value bs_pdu { - BSCP.send(f_BnsUdReq(bs_pdu)); - } - + /* BSSGP-UNITDATA PDUs from network to NS-UNITDATA.ind to user */ + [not g_sgsn_role] BSCP.receive(f_BnsUdInd(tr_BSSGP_DL_UD)) -> value udi { + BSSGP_SP.send(udi.bssgp); } - } + [g_sgsn_role] BSCP.receive(f_BnsUdInd(tr_BSSGP_UL_UD)) -> value udi { + BSSGP_SP.send(udi.bssgp); + } + /* pass virtually any PDU from user to NS-UNITDATA PDU on network */ + [] BSSGP_SP.receive(PDU_BSSGP:?) -> value bs_pdu { + BSCP.send(f_BnsUdReq(bs_pdu)); + } - } /* while */ - //deactivate(d); + } } + + } /* while */ + //deactivate(d); +} + + } -- To view, visit https://gerrit.osmocom.org/6526 To unsubscribe, visit https://gerrit.osmocom.org/settings Gerrit-MessageType: newpatchset Gerrit-Change-Id: I1d6de5404dbf907f663ec89b1847c6de84d5d858 Gerrit-PatchSet: 3 Gerrit-Project: osmo-ttcn3-hacks Gerrit-Branch: master Gerrit-Owner: Harald Welte <laforge at gnumonks.org> Gerrit-Reviewer: Harald Welte <laforge at gnumonks.org> Gerrit-Reviewer: Jenkins Builder