[PATCH v2 0/6] network: fix dhcp response packet checksums on virtual networks
Patch 6/6 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 6/6 for
details). This will hopefully be the final attempt.
The differences from V1 are:
* use a single "flags" argument rather than 3 bools when calling
virNetDevBandwidthSet() (Patch 1/5 turned into 1/6 & 2/6)
* be more lenient about what constitutes a "match" when looking at the
output of "tc qdisc show" (Patch 3/5 turned into 4/6
* call the new virFirewall layer "tc" rather than "raw", making it
specific to "tc" (Patch 4/5 turned into 5/6)
There may still be some disagreement about putting the tc commands in
the virFirewall, but I wanted to get this sent to save time in case my
argument was convincing :-)
Laine Stump (6):
util: use a single flags arg for virNetDevBandwidthSet(), not multiple
bools
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 "tc" 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 | 8 +-
src/lxc/lxc_process.c | 8 +-
src/network/bridge_driver.c | 10 +-
src/network/network_nftables.c | 69 +++++++++++
src/qemu/qemu_command.c | 11 +-
src/qemu/qemu_driver.c | 29 ++---
src/qemu/qemu_hotplug.c | 22 +++-
src/util/virfirewall.c | 66 +++++++----
src/util/virfirewall.h | 1 +
src/util/virfirewalld.c | 1 +
src/util/virnetdevbandwidth.c | 110 ++++++++++++++----
src/util/virnetdevbandwidth.h | 15 ++-
.../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 | 12 +-
25 files changed, 724 insertions(+), 79 deletions(-)
--
2.47.0