This is a note to let you know that I've just added the patch titled
mlxsw: spectrum: Disable learning according to STP state
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mlxsw-spectrum-disable-learning-according-to-stp-state.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 454911333b1d86e1d58a557be271bc6b7e9e7f10 Mon Sep 17 00:00:00 2001
From: Ido Schimmel <idosch@xxxxxxxxxxxx>
Date: Wed, 27 Jan 2016 15:20:20 +0100
Subject: mlxsw: spectrum: Disable learning according to STP state
From: Ido Schimmel <idosch@xxxxxxxxxxxx>
commit 454911333b1d86e1d58a557be271bc6b7e9e7f10 upstream.
When port is put into LISTENING state it shouldn't populate the FDB, so
set the port's STP state in hardware to DISCARDING instead of LEARNING.
It will therefore keep listening to BPDU packets, but discard other
non-control packets and won't perform any learning.
Fixes: 56ade8fe3fe1 ("mlxsw: spectrum: Add initial support for Spectrum ASIC")
Signed-off-by: Ido Schimmel <idosch@xxxxxxxxxxxx>
Signed-off-by: Jiri Pirko <jiri@xxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -90,10 +90,10 @@ static int mlxsw_sp_port_stp_state_set(s
case BR_STATE_FORWARDING:
spms_state = MLXSW_REG_SPMS_STATE_FORWARDING;
break;
- case BR_STATE_LISTENING: /* fall-through */
case BR_STATE_LEARNING:
spms_state = MLXSW_REG_SPMS_STATE_LEARNING;
break;
+ case BR_STATE_LISTENING: /* fall-through */
case BR_STATE_DISABLED: /* fall-through */
case BR_STATE_BLOCKING:
spms_state = MLXSW_REG_SPMS_STATE_DISCARDING;
Patches currently in stable-queue which might be from idosch@xxxxxxxxxxxx are
queue-4.4/mlxsw-spectrum-don-t-forward-packets-when-stp-state-is-disabled.patch
queue-4.4/mlxsw-treat-local-port-64-as-valid.patch
queue-4.4/mlxsw-pci-correctly-determine-if-descriptor-queue-is-full.patch
queue-4.4/mlxsw-spectrum-don-t-count-internal-tx-header-bytes-to-stats.patch
queue-4.4/mlxsw-spectrum-fix-misuse-of-hard_header_len.patch
queue-4.4/mlxsw-spectrum-indicate-support-for-autonegotiation.patch
queue-4.4/mlxsw-spectrum-disable-learning-according-to-stp-state.patch
