| Message ID | 20230611081547.26747-4-arinc.unal@arinc9.com (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | [net,v2,1/7] net: dsa: mt7530: fix trapping frames with multiple CPU ports on MT7531 | expand |
diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c index df2626f72367..c2af23f2bc5d 100644 --- a/drivers/net/dsa/mt7530.c +++ b/drivers/net/dsa/mt7530.c @@ -2259,6 +2259,10 @@ mt7530_setup(struct dsa_switch *ds) priv->p6_interface = PHY_INTERFACE_MODE_NA; + /* Trap BPDUs to the CPU port */ + mt7530_rmw(priv, MT753X_BPC, MT753X_BPDU_PORT_FW_MASK, + MT753X_BPDU_CPU_ONLY); + /* Enable and reset MIB counters */ mt7530_mib_reset(ds);
BPDUs are link-local frames, therefore they must be trapped to the CPU port. Currently, the MT7530 switch treats BPDUs as regular multicast frames, therefore flooding them to user ports. To fix this, set BPDUs to be trapped to the CPU port. BPDUs received from a user port will be trapped to the numerically smallest CPU port which is affine to the DSA conduit interface that is up. Fixes: b8f126a8d543 ("net-next: dsa: add dsa support for Mediatek MT7530 switch") Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com> --- v2: Add this patch. --- drivers/net/dsa/mt7530.c | 4 ++++ 1 file changed, 4 insertions(+)