Based on Stefano's recent patch for faster tests.
Allow the user to specify which addresses are translated when used by
the guest, rather than always being the gateway address or nothing.
We also allow this remapping to go to the host's global address (more
precisely the address assigned to the guest) rather than just host
loopback.
Along the way to implementing that make many changes to clarify what
various addresses we track mean, fixing a number of small bugs as
well.
Paul, amongst other things, I think this will allow podman to
(finally) nicely address #19213, picking an address to remap to the
host's external address with --map-guest-addr, much like it already
uses --dns-forward.
Changes in v2:
* Assorted minor stylistic fixes based on Stefano's review
* Change name of the new options from --nat-* to --map-*
* Shorten descriptions of new options in --help (leave the full text
to the man page)
* Add fix for the fact that changing MTU causes IPv6 to be
temporarily deconfigured during perf tests
David Gibson (23):
treewide: Use "our address" instead of "forwarding address"
util: Helper for formatting MAC addresses
treewide: Rename MAC address fields for clarity
treewide: Use struct assignment instead of memcpy() for IP addresses
conf: Use array indices rather than pointers for DNS array slots
conf: More accurately count entries added in get_dns()
conf: Move DNS array bounds checks into add_dns[46]
conf: Move adding of a nameserver from resolv.conf into subfunction
conf: Correct setting of dns_match address in add_dns6()
conf: Treat --dns addresses as guest visible addresses
conf: Remove incorrect initialisation of addr_ll_seen
util: Correct sock_l4() binding for link local addresses
treewide: Change misleading 'addr_ll' name
Clarify which addresses in ip[46]_ctx are meaningful where
Initialise our_tap_ll to ip6.gw when suitable
fwd: Helpers to clarify what host addresses aren't guest accessible
fwd: Split notion of "our tap address" from gateway for IPv4
Don't take "our" MAC address from the host
conf, fwd: Split notion of gateway/router from guest-visible host
address
test: Reconfigure IPv6 address after changing MTU
conf: Allow address remapped to host to be configured
fwd: Distinguish translatable from untranslatable addresses on inbound
fwd, conf: Allow NAT of the guest's assigned address
arp.c | 4 +-
conf.c | 318 +++++++++++++++++++++++++-----------------
dhcp.c | 21 +--
dhcpv6.c | 21 +--
flow.c | 72 +++++-----
flow.h | 18 +--
fwd.c | 170 +++++++++++++++++-----
icmp.c | 4 +-
ndp.c | 9 +-
passt.1 | 43 +++++-
passt.c | 2 +-
passt.h | 53 +++++--
pasta.c | 14 +-
tap.c | 12 +-
tcp.c | 33 ++---
tcp_internal.h | 2 +-
test/lib/setup | 11 +-
test/passt_in_ns/dhcp | 73 ++++++++++
test/passt_in_ns/tcp | 38 +++--
test/passt_in_ns/udp | 22 +--
test/perf/passt_tcp | 37 ++---
test/perf/passt_udp | 31 ++--
test/perf/pasta_tcp | 29 ++--
test/perf/pasta_udp | 25 ++--
test/run | 4 +-
udp.c | 12 +-
util.c | 22 ++-
util.h | 4 +-
28 files changed, 712 insertions(+), 392 deletions(-)
create mode 100644 test/passt_in_ns/dhcp
--
2.46.0