IuPS: osmo-sgsn: add core IuPS impl, call iu_init()

Add main Iu entry points for IuPS:
* gsm0408_gprs_rcvmsg_iu()
* sgsn_ranap_iu_event()
* sgsn_ranap_rab_ass_resp()

Add main MM context management for IuPS:
* sgsn_mm_ctx_by_ue_ctx()
* sgsn_mm_ctx_alloc_iu()

Call iu_init() from sgsn_main.c.

Add asn_debug impl ("extern" from libasn1c).
Initialize asn_debug VTY command (iu_vty_init()).

osmo-sgsn build: add libiu and libasn1c, libosmo-sigtran, libosmo-ranap

Change-Id: I469ae6ca9ef254d04ee0d2d79bdd65aebcd027b5
7 files changed
tree: bbf94ae7b5e80f53d752379251ddafca0784cfff
  1. contrib/
  2. debian/
  3. openbsc/
  4. .gitignore
  5. .gitreview
  6. .mailmap