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laforge gerrit-no-reply at lists.osmocom.orglaforge has uploaded this change for review. ( https://gerrit.osmocom.org/c/libosmo-sccp/+/22834 ) Change subject: sccp: more SCMG handling: SSA and SSP message handling ...................................................................... sccp: more SCMG handling: SSA and SSP message handling When a SSP (Subsystem Prohibited) or SSA (Subsystem Available) SCMG message is received, we must generate the respective primitives towards the SCCP user. Change-Id: I149166a25113f5d3e3536f9297bf89ff3139b9e3 --- M src/sccp_scmg.c 1 file changed, 31 insertions(+), 2 deletions(-) git pull ssh://gerrit.osmocom.org:29418/libosmo-sccp refs/changes/34/22834/1 diff --git a/src/sccp_scmg.c b/src/sccp_scmg.c index ed16fe7..49e09ca 100644 --- a/src/sccp_scmg.c +++ b/src/sccp_scmg.c @@ -167,6 +167,33 @@ } +/* Subsystem Allowed received */ +static int scmg_rx_ssa(struct osmo_sccp_user *scu, const struct osmo_sccp_addr *calling_addr, + const struct osmo_sccp_addr *called_addr, const struct sccp_scmg_msg *ssa) +{ + /* Q.714 5.3.3 */ + if (ssa->affected_ssn == SCCP_SSN_MANAGEMENT) + return 0; + + /* if the SSN is not marked as prohibited, ignore */ + + /* Q.714 5.3.2.2 a) */ + sccp_scmg_rx_ssn_allowed(scu->inst, ssa->affected_pc, ssa->affected_ssn, ssa->smi); + + /* If the remote SCCP, at which the subsystem reported in the SSA message resides, is marked + * inaccessible, then the message is treated as an implicit indication of SCCP restart */ + return 0; +} + +/* Subsystem Prohibited received */ +static int scmg_rx_ssp(struct osmo_sccp_user *scu, const struct osmo_sccp_addr *calling_addr, + const struct osmo_sccp_addr *called_addr, const struct sccp_scmg_msg *ssp) +{ + /* Q.714 5.3.2.2 a) */ + sccp_scmg_rx_ssn_prohibited(scu->inst, ssp->affected_pc, ssp->affected_ssn, ssp->smi); + return 0; +} + /* Subsystem Test received */ static int scmg_rx_sst(struct osmo_sccp_user *scu, const struct osmo_sccp_addr *calling_addr, const struct osmo_sccp_addr *called_addr, const struct sccp_scmg_msg *sst) @@ -191,10 +218,12 @@ const struct osmo_sccp_addr *called_addr, const struct sccp_scmg_msg *scmg) { switch (scmg->msg_type) { + case SCCP_SCMG_MSGT_SSA: + return scmg_rx_ssa(scu, calling_addr, called_addr, scmg); + case SCCP_SCMG_MSGT_SSP: + return scmg_rx_ssp(scu, calling_addr, called_addr, scmg); case SCCP_SCMG_MSGT_SST: return scmg_rx_sst(scu, calling_addr, called_addr, scmg); - case SCCP_SCMG_MSGT_SSP: - case SCCP_SCMG_MSGT_SSA: case SCCP_SCMG_MSGT_SOR: case SCCP_SCMG_MSGT_SOG: case SCCP_SCMG_MSGT_SSC: -- To view, visit https://gerrit.osmocom.org/c/libosmo-sccp/+/22834 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: libosmo-sccp Gerrit-Branch: master Gerrit-Change-Id: I149166a25113f5d3e3536f9297bf89ff3139b9e3 Gerrit-Change-Number: 22834 Gerrit-PatchSet: 1 Gerrit-Owner: laforge <laforge at osmocom.org> Gerrit-MessageType: newchange -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/gerrit-log/attachments/20210210/96ef196f/attachment.htm>