2004-09-12 Paul Jakma <paul@dishone.st>

2004-09-12 Paul Jakma <paul@dishone.st>

        * ospf_packet.c: Fix bugzilla #107
          (ospf_packet_max) get rid of the magic 88 constant
          (ospf_swab_iph_ton) new function. set ip header to network order,
          taking BSDisms into account.
          (ospf_swab_iph_toh) the inverse.
          (ospf_write) Add support for IP fragmentation, will only work on
          linux though, other kernels make it impossible. get rid of the
          magic 4 constant.
          (ospf_make_ls_upd) Bound check to end of stream, not to
          interface mtu.
          (ospf_ls_upd_packet_new) New function, allocate upd packet
          taking oversized LSAs into account.
          (ospf_ls_upd_queue_send) use ospf_ls_upd_packet_new to allocate,
          rather than statically allocating mtu sized packet buffer, which
          actually was wrong - it didnt take ip header into account, which
          should not be included in packet buffer.
          (ospf_ls_upd_send_queue_event) minor tweaks and remove
          TODO comment.