msc: Add net back pointer to gsm_trans

Currently the net pointer is obtained from trans->subscr->net. On the
other hand, the list gsm_trans object is managed by the net object.

This patch adds the back pointer to the structure and replaces all
trans->subscr->net by trans->net expressions. In trans_alloc() the
trans->net pointer is obtained from the subscr object.

Sponsored-by: On-Waves ehf
3 files changed
tree: 15014ef3734dda9166e88faab97007ab8b9851f3
  1. debian/
  2. hlrsync/
  3. linux-kernel/
  4. openbsc/
  5. wireshark/
  6. README