linux/tools/testing/selftests/drivers
Ido Schimmel 979b9b251a mlxsw: spectrum: Clear VLAN filters during port initialization
When a port is created, its VLAN filters are not cleared by the
firmware. This causes tagged packets to be later dropped by the ingress
STP filters, which default to DISCARD state.

The above did not matter much until commit b5ce611fd9 ("mlxsw:
spectrum: Add devlink-trap support") where we exposed the drop reason to
users.

Without this patch, the drop reason users will see is not consistent. If
a port is enslaved to a VLAN-aware bridge and a packet with an invalid
VLAN tries to ingress the bridge, it will be dropped due to ingress STP
filter. If the VLAN is later enabled and then disabled, the packet will
be dropped by the ingress VLAN filter despite the above being a
seemingly NOP operation.

Fix this by clearing all the VLAN filters during port initialization.
Adjust the test accordingly.

Fixes: b5ce611fd9 ("mlxsw: spectrum: Add devlink-trap support")
Reported-by: Alex Kushnarov <alexanderk@mellanox.com>
Tested-by: Alex Kushnarov <alexanderk@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-27 20:33:19 +02:00
..
dma-buf selftests: dma-buf: Adding kernel config fragment CONFIG_UDMABUF=y 2019-06-28 14:30:41 -06:00
gpu License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
net mlxsw: spectrum: Clear VLAN filters during port initialization 2019-09-27 20:33:19 +02:00
usb/usbip selftests: usbip: add wait after attach and before checking port status 2018-10-09 16:13:42 +02:00
.gitignore selftests: drivers: Create .gitignore to include /dma-buf/udmabuf 2019-05-14 17:37:06 -06:00