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pespin gerrit-no-reply at lists.osmocom.orgHello dexter, laforge, Jenkins Builder, I'd like you to reexamine a change. Please visit https://gerrit.osmocom.org/c/osmo-bsc/+/19954 to look at the new patch set (#3). Change subject: lchan_rtp_fsm: Deferr IPACC MDCX after BTS side MGCP MDCX ...................................................................... lchan_rtp_fsm: Deferr IPACC MDCX after BTS side MGCP MDCX This is needed to be able to force MGW to provide an IPv4 address during MDCX, since IPACC protocol on the BTS side only supports IPv4, but one may need IPv6 side at the same time on the core side. By moving the IPACC MDCX request to a later step, the BSC gains knowledge of the local address on each side (BTS, MGW), and if they don't match (ie. BTS uses IPv4 and MGW uses IPv6), it can then get MGW to offer an IPv4 address during MGCP MDCX containing the BTS IPv4 address. At that point, the MGW can see the mismatch and provide an IPv4 address in the MGCP MDCX ACK, which can then finally be communicated to the BTS during IPACC MDCX phase. Previous order: BSC -> MGW: CRCX BSC <- MGW: CRCX ACK (get MGW local IP addr) BSC -> BTS: IPACC CRCX BSC <- BTS: IPACC CRCX ACK (get BTS local IP addr) BSC -> BTS: IPACC MDCX (set MGW IP addr) BSC <- BTS: IPACC MDCX ACK BSC -> MGW: MDCX (set BTS IP addr) BSC <- MGW: MDCX ACK New order: BSC -> MGW: CRCX BSC <- MGW: CRCX ACK (get MGCP local IPv6 addr) BSC -> BTS: IPACC CRCX BSC <- BTS: IPACC CRCX ACK (get BTS local IPv4 addr) BSC -> MGW: MDCX (set BTS IPv4 addr) BSC <- MGW: MDCX ACK (here MGW changes its local addr to IPv4) BSC -> BTS: IPACC MDCX (set MGW IPv4 addr) BSC <- BTS: IPACC MDCX ACK Change-Id: I4de5ea5c94c1482c9cb0b6386997a942edc60e32 --- M doc/lchan-rtp-fsm.dot M doc/lchan.msc M src/osmo-bsc/lchan_rtp_fsm.c 3 files changed, 36 insertions(+), 35 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-bsc refs/changes/54/19954/3 -- To view, visit https://gerrit.osmocom.org/c/osmo-bsc/+/19954 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-bsc Gerrit-Branch: master Gerrit-Change-Id: I4de5ea5c94c1482c9cb0b6386997a942edc60e32 Gerrit-Change-Number: 19954 Gerrit-PatchSet: 3 Gerrit-Owner: pespin <pespin at sysmocom.de> Gerrit-Assignee: dexter <pmaier at sysmocom.de> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: dexter <pmaier at sysmocom.de> Gerrit-Reviewer: laforge <laforge at osmocom.org> Gerrit-MessageType: newpatchset -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/gerrit-log/attachments/20200909/70d274c6/attachment.htm>