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| author | Tristram Ha <Tristram.Ha@microchip.com> | 2019-02-08 05:05:58 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-02-11 21:46:51 +0100 |
| commit | cbd72b485214f085a022b56a3051524577d891fe (patch) | |
| tree | 71e02ff49751f98d33a780b73ec59604a6411ddf /drivers/net/dsa/microchip/ksz9477.c | |
| parent | Merge branch 'net-phy-register-modifying-helpers' (diff) | |
| download | linux-cbd72b485214f085a022b56a3051524577d891fe.tar.xz linux-cbd72b485214f085a022b56a3051524577d891fe.zip | |
net: dsa: microchip: add switch offload forwarding support
The flag offload_fwd_mark is set as the switch can forward frames by
itself.
This can be considered a fix to a problem introduced in commit
c2e866911e254067 where the port membership are not set in sync. The flag
offload_fwd_mark just needs to be set in tag_ksz.c to prevent the software
bridge from forwarding duplicate multicast frames.
Fixes: c2e866911e254067 ("microchip: break KSZ9477 DSA driver into two files")
Signed-off-by: Tristram Ha <Tristram.Ha@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa/microchip/ksz9477.c')
| -rw-r--r-- | drivers/net/dsa/microchip/ksz9477.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c index 89ed059bb576..674d77e1b029 100644 --- a/drivers/net/dsa/microchip/ksz9477.c +++ b/drivers/net/dsa/microchip/ksz9477.c @@ -397,6 +397,7 @@ static void ksz9477_port_stp_state_set(struct dsa_switch *ds, int port, struct ksz_port *p = &dev->ports[port]; u8 data; int member = -1; + int forward = dev->member; ksz_pread8(dev, port, P_STP_CTRL, &data); data &= ~(PORT_TX_ENABLE | PORT_RX_ENABLE | PORT_LEARN_DISABLE); @@ -464,10 +465,10 @@ static void ksz9477_port_stp_state_set(struct dsa_switch *ds, int port, } /* When topology has changed the function ksz_update_port_member - * should be called to modify port forwarding behavior. However - * as the offload_fwd_mark indication cannot be reported here - * the switch forwarding function is not enabled. + * should be called to modify port forwarding behavior. */ + if (forward != dev->member) + ksz_update_port_member(dev, port); } static void ksz9477_flush_dyn_mac_table(struct ksz_device *dev, int port) |