diff mbox series

[net-next,10/16] selftests: mlxsw: mirror_gre_scale: Disable IPv6 autogen on a bridge

Message ID 37694704013f9640c27c3cb7d9296f4bd213473f.1687265905.git.petrm@nvidia.com (mailing list archive)
State Accepted
Commit 32b3a7bf8570d24b30d1961fb3eaddb9f1c3250a
Headers show
Series selftests: Preparations for out-of-order-operations patches in mlxsw | expand

Commit Message

Petr Machata June 20, 2023, 1:55 p.m. UTC 
In a future patch, mlxsw will start adding RIFs to uppers of front panel
port netdevices, if they have an IP address.

At the time that the front panel port is enslaved to the bridge, the bridge
MAC address does not have the same prefix as other interfaces in the
system. On Nvidia Spectrum-1 machines all the RIFs have to have the same
38-bit MAC address prefix. Since the bridge does not obey this limitation,
the RIF cannot be created, and the enslavement attempt is vetoed on the
grounds of the configuration not being offloadable.

The selftest itself however checks how many mirroring sessions a machine is
capable of offloading. The IP address or the RIF are irrelevant.

Fix by disabling automatic IPv6 address generation for the HW-offloaded
bridge in this selftest, thus exempting it from mlxsw router attention.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
---
 tools/testing/selftests/drivers/net/mlxsw/mirror_gre_scale.sh | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/tools/testing/selftests/drivers/net/mlxsw/mirror_gre_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/mirror_gre_scale.sh
index e00435753008..e5589e2fca85 100644
--- a/tools/testing/selftests/drivers/net/mlxsw/mirror_gre_scale.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/mirror_gre_scale.sh
@@ -165,6 +165,7 @@  mirror_gre_setup_prepare()
 	simple_if_init $h3
 
 	ip link add name br1 type bridge vlan_filtering 1
+	ip link set dev br1 addrgenmode none
 	ip link set dev br1 up
 
 	ip link set dev $swp1 master br1