Stephen Hemminger
2023-Oct-26 17:21 UTC
[Bridge] Fw: [Bug 218047] New: linux network bridge kernel set group_fwd_mask 65535
The kernel intentionally does not allow forwarding of IEEE pause frames.
These need to be handled dropped in the bridge.
Any mask without bit 1 set should work.
Originally LACP, STP and MACPAUSE frames were always blocked and could not be
changed. The restriction was relaxed for LACP and STP frames.
Begin forwarded message:
Date: Thu, 26 Oct 2023 05:16:24 +0000
From: bugzilla-daemon at kernel.org
To: stephen at networkplumber.org
Subject: [Bug 218047] New: linux network bridge kernel set group_fwd_mask 65535
https://bugzilla.kernel.org/show_bug.cgi?id=218047
Bug ID: 218047
Summary: linux network bridge kernel set group_fwd_mask 65535
Product: Networking
Version: 2.5
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P3
Component: Other
Assignee: stephen at networkplumber.org
Reporter: ne-vlezay80 at yandex.ru
Regression: No
If trying set the parameter from network bridge? going error:
[root at arch user]# ip link set bridge0 type bridge group_fwd_mask 65535
RTNETLINK answers: Invalid argument
setting this parameter is desirable if the switching is routed to a separate
virtual machine on the hypervisor, and on the host it looks like this:
ip link add dev ns-switch.0 up mtu 16384 master bridge0 type veth peer name
host0 address $SWMAC netns switch mtu 16384
ip link add dev ns-host1.0 up mtu 16384 master bridge0 type veth peer name
host0 netns host1 mtu 16384
ip link add dev ns-host2.0 up mtu 16384 master bridge0 type veth peer name
host0 netns host2 mtu 16384
ip link add dev ns-host3.0 up mtu 16384 master bridge0 type veth peer name
host0 netns host3 mtu 16384
ip link add dev ns-host4.0 up mtu 16384 master bridge0 type veth peer name
host0 netns host4 mtu 16384
tc qdisc add dev ns-switch.0 handle ffff: ingress
tc qdisc add dev ns-host1.0 handle ffff: ingress
tc qdisc add dev ns-host2.0 handle ffff: ingress
tc qdisc add dev ns-host3.0 handle ffff: ingress
tc qdisc add dev ns-host4.0 handle ffff: ingress
tc qdisc add dev gt-ll0 handle ffff: ingress
tc qdisc add dev gt-ll0 handle 1: root htb default 10
tc qdisc add dev ns-switch.0 handle 1: root htb default 10
tc qdisc add dev ns-host1.0 handle 1: root htb default 10
tc qdisc add dev ns-host2.0 handle 1: root htb default 10
tc qdisc add dev ns-host3.0 handle 1: root htb default 10
tc qdisc add dev ns-host4.0 handle 1: root htb default 10
tc filter add dev ns-host1.0 parent ffff: prio 9 protocol all flower dst_mac
01:00:00:00:00:00/8 action vlan push id 10 action mirred egress redirect dev
gt-ll0
tc filter add dev ns-host2.0 parent ffff: prio 9 protocol all flower dst_mac
01:00:00:00:00:00/8 action vlan push id 11 action mirred egress redirect dev
gt-ll0
tc filter add dev ns-host3.0 parent ffff: prio 9 protocol all flower dst_mac
01:00:00:00:00:00/8 action vlan push id 12 action mirred egress redirect dev
gt-ll0
tc filter add dev ns-host4.0 parent ffff: prio 9 protocol all flower dst_mac
01:00:00:00:00:00/8 action vlan push id 13 action mirred egress redirect dev
gt-ll0
tc filter add dev ns-host1.0 parent ffff: prio 10 protocol all matchall action
vlan push id 10
tc filter add dev ns-host2.0 parent ffff: prio 10 protocol all matchall action
vlan push id 11
tc filter add dev ns-host3.0 parent ffff: prio 10 protocol all matchall action
vlan push id 12
tc filter add dev ns-host4.0 parent ffff: prio 10 protocol all matchall action
vlan push id 13
tc filter add dev ns-host1.0 parent 1: prio 65535 protocol all matchall action
drop
tc filter add dev ns-host1.0 parent 1: prio 1 protocol 802.1Q flower vlan_id 10
action vlan pop
tc filter add dev ns-host2.0 parent 1: prio 65535 protocol all matchall action
drop
tc filter add dev ns-host2.0 parent 1: prio 1 protocol 802.1Q flower vlan_id 11
action vlan pop
tc filter add dev ns-host3.0 parent 1: prio 65535 protocol all matchall action
drop
tc filter add dev ns-host3.0 parent 1: prio 1 protocol 802.1Q flower vlan_id 12
action vlan pop
tc filter add dev ns-host4.0 parent 1: prio 65535 protocol all matchall action
drop
tc filter add dev ns-host4.0 parent 1: prio 1 protocol 802.1Q flower vlan_id 13
action vlan pop
the config example from be network lab.
--
You may reply to this email to add a comment.
You are receiving this mail because:
You are the assignee for the bug.