[PATCH v2 0/4] Passt Interface Identifiers

[David Gibson <david@gibson.dropbear.id.au>]

For the generalisations to forwarding we want to accomplish with the
flow table, we will need a more formalised notion of passt
"interfaces" - that is way that passt communicates with network,
whether that be over L4 sockets (as on the host) or via an L2 tunnel.

This series makes a small start on this, by introducing a type to
identify passt interfaces.  We don't use it for a whole lot yet, but
it will become more useful in future.

Based on the automatic port forwarding cleanup series

Changes since v1:
 * Don't use a type alias for pif ids, just use bare uint8_t

David Gibson (4):
  udp: Clean up ref initialisation in udp_sock_init()
  pif: Introduce notion of passt/pasta interface
  pif: Record originating pif in listening socket refs
  pif: Pass originating pif to tap handler functions

 Makefile     |  2 +-
 icmp.c       |  4 +++-
 icmp.h       |  4 ++--
 passt.h      |  1 +
 pif.h        | 27 +++++++++++++++++++++++++++
 tap.c        | 26 ++++++++++++++++----------
 tcp.c        | 11 ++++++++---
 tcp.h        |  7 ++++---
 tcp_splice.c | 10 ++++++----
 udp.c        | 35 ++++++++++++++++++-----------------
 udp.h        | 11 ++++++-----
 11 files changed, 92 insertions(+), 46 deletions(-)
 create mode 100644 pif.h

-- 
2.41.0