[PATCH 0/5] network: fix dhcp response packet checksums on virtual networks
Patch 4/4 explains the problem and how these patches fix it. Assuming
no problems are found (none so far) this should go into 10.10.0, as it
solves a regression caused by switching the network driver to the
nftables backend.
There was a prior attempt at fixing this that was accepted, pushed,
bugs were discovered, and it was reverted (see Patch 4/4 for details). This will hopefully
be the final attempt.
Please test with as many different guests as possible, both with
nftables backend and iptables backend, and using different guest
interface types, etc.
Laine Stump (5):
util: make it optional to clear existing tc qdiscs/filters in
virNetDevBandwidthSet()
util: put the command that adds a tx filter qdisc into a separate
function
util: don't re-add the qdisc used for tx filters if it already exists
util: add new "raw" layer for virFirewallCmd objects
network: add tc filter rule to nftables backend to fix checksum of
DHCP responses
src/libvirt_private.syms | 1 +
src/lxc/lxc_driver.c | 2 +-
src/lxc/lxc_process.c | 2 +-
src/network/bridge_driver.c | 4 +-
src/network/network_nftables.c | 69 +++++++++++++++++
src/qemu/qemu_command.c | 2 +-
src/qemu/qemu_driver.c | 3 +-
src/qemu/qemu_hotplug.c | 4 +-
src/util/virfirewall.c | 74 ++++++++++++-------
src/util/virfirewall.h | 1 +
src/util/virfirewalld.c | 1 +
src/util/virnetdevbandwidth.c | 70 ++++++++++++++++--
src/util/virnetdevbandwidth.h | 4 +
.../forward-dev-linux.nftables | 40 ++++++++++
.../isolated-linux.nftables | 40 ++++++++++
.../nat-default-linux.nftables | 40 ++++++++++
.../nat-ipv6-linux.nftables | 40 ++++++++++
.../nat-ipv6-masquerade-linux.nftables | 40 ++++++++++
.../nat-many-ips-linux.nftables | 40 ++++++++++
.../nat-no-dhcp-linux.nftables | 40 ++++++++++
.../nat-port-range-ipv6-linux.nftables | 40 ++++++++++
.../nat-port-range-linux.nftables | 40 ++++++++++
.../nat-tftp-linux.nftables | 40 ++++++++++
.../route-default-linux.nftables | 40 ++++++++++
tests/virnetdevbandwidthtest.c | 5 +-
25 files changed, 639 insertions(+), 43 deletions(-)
--
2.47.0