[PATCH v7 0/8] Use true MAC address of LAN local remote hosts

[Jon Maloy <jmaloy@redhat.com>]

Bug #120 asks us to use the true MAC addresses of LAN local
remote hosts, since some programs need this information.
These commits introduces this for ARP, NDP, UDP, TCP and
ICMP.

---
v3: Updated according to feedback from Stefano and David:
    - Made the ARP/NDP lookup call filter out the requested address
      by itself, qualified by the index if the template interface
    - Moved the flow specific MAC address from struct flowside to
      struct flow_common.

v4: - Updated according to feedback from David and Stefan
    - Added a cache table for ARP/NDP table contents

v5: - Updated according to feedback from David and Stefan
    - Added cache table entries to FIFO/LRU queue
    - New criteria for when to consult ARP/NDP

v6: - Simplified and merged mac cache table commits
    - Other changes after feedback from David.
v7: - Fixes in patch #2 based on feedback from David
      and Stefano.

Jon Maloy (8):
  netlink: add function to extract MAC addresses from NDP/ARP table
  fwd: Added cache table for ARP/NDP contents
  arp/ndp: respond with true MAC address of LAN local remote hosts
  flow: add MAC address of LAN local remote hosts to flow
  udp: forward external source MAC address through tap interface
  tcp: forward external source MAC address through tap interface
  tap: change signature of function tap_push_l2h()
  icmp: let icmp use mac address from flowside structure

 arp.c          |   9 ++-
 conf.c         |   1 +
 flow.c         |   2 +
 flow.h         |   2 +
 fwd.c          | 184 +++++++++++++++++++++++++++++++++++++++++++++++--
 fwd.h          |   6 ++
 icmp.c         |   8 ++-
 inany.c        |   1 +
 ndp.c          |  10 ++-
 netlink.c      |  82 ++++++++++++++++++++++
 netlink.h      |   2 +
 passt.c        |   9 ++-
 passt.h        |   3 +-
 pasta.c        |   2 +-
 tap.c          |  24 ++++---
 tap.h          |   7 +-
 tcp.c          |  18 +++--
 tcp.h          |   2 +-
 tcp_buf.c      |  37 +++++-----
 tcp_internal.h |   4 +-
 tcp_vu.c       |   5 +-
 udp.c          |  57 +++++++++------
 udp.h          |   2 +-
 util.c         |  12 ++++
 util.h         |   1 +
 25 files changed, 407 insertions(+), 83 deletions(-)

-- 
2.50.1