net: dsa: microchip: add switch offload forwarding support (cbd72b48) · Commits · 戴 / test

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 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: ("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>

drivers/net/dsa/microchip/ksz9477.c

+4 −3

Original line number	Diff line number	Diff line
		@@ -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)

net/dsa/tag_ksz.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -67,6 +67,8 @@ static struct sk_buff ksz_common_rcv(struct sk_buff skb,

		pskb_trim_rcsum(skb, skb->len - len);

		skb->offload_fwd_mark = true;

		return skb;
		}

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