Change in osmo-bsc-nat[master]: Add subscr_conn_fsm

Attention is currently required from: osmith. Hello Jenkins Builder, I'd like you to reexamine a change. Please visit https://gerrit.osmocom.org/c/osmo-bsc-nat/+/27712 to look at the new patch set (#3). Change subject: Add subscr_conn_fsm ...................................................................... Add subscr_conn_fsm Insert the BSCNAT's MGW into phone calls by replacing the AoIP transport layer address IE inside BSSMAP Assignment Request and Assignment Confirm. Accomplish this with a new subscr_conn_fsm that parses and stores the original ass_req / ass_conf messages, communicates with the BSCNAT MGW, and then creates new ass_req / ass_conf messages based on the original ones but with new RTP information. With this patch it is possible to do a successful voice call with the following network: MS1 --- BTS1 --- BSC1 --. | | BSCNAT ----------- MSC | | | | | '-- MGW-BSC1 --|-- MGW-BSCNAT --- MGW-MSC | | MS2 --- BTS2 --- BSC2 --' | | | | '-- MGW-BSC2 ------' Related: SYS#5560 Related: https://osmocom.org/projects/osmo-bscnat/wiki/Ladder_diagrams_for_key_proce… Change-Id: I7e491aada6f5db0eb35ef2039869c6ba07f9ca3b --- M include/osmocom/bsc_nat/Makefile.am M include/osmocom/bsc_nat/bsc_nat.h M include/osmocom/bsc_nat/bssap.h M include/osmocom/bsc_nat/subscr_conn.h A include/osmocom/bsc_nat/subscr_conn_fsm.h M src/osmo-bsc-nat/Makefile.am M src/osmo-bsc-nat/bssap_conn.c M src/osmo-bsc-nat/subscr_conn.c A src/osmo-bsc-nat/subscr_conn_fsm.c 9 files changed, 846 insertions(+), 0 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-bsc-nat refs/changes/12/27712/3 -- To view, visit https://gerrit.osmocom.org/c/osmo-bsc-nat/+/27712 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-bsc-nat Gerrit-Branch: master Gerrit-Change-Id: I7e491aada6f5db0eb35ef2039869c6ba07f9ca3b Gerrit-Change-Number: 27712 Gerrit-PatchSet: 3 Gerrit-Owner: osmith <osmith(a)sysmocom.de> Gerrit-Reviewer: Jenkins Builder Gerrit-CC: pespin <pespin(a)sysmocom.de> Gerrit-Attention: osmith <osmith(a)sysmocom.de> Gerrit-MessageType: newpatchset