Commit c0e6820b authored by Florian Fainelli's avatar Florian Fainelli Committed by David S. Miller
Browse files

net: dsa: bcm_sf2: Disable learning while in WoL 



When we are in Wake-on-LAN, we operate with the host sofware not running
a network stack, so we want to the switch to flood packets in order to
cause a system wake-up when matching specific filters (unicast or
multicast). This was not necessary before since we supported Magic
Packet which are targeting a broadcast MAC address which the switch
already floods.

Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2104bc0a

drivers/net/dsa/bcm_sf2.c

+11 −1
Original line number Diff line number Diff line
@@ -166,6 +166,11 @@ static int bcm_sf2_port_setup(struct dsa_switch *ds, int port, 
	reg &= ~P_TXQ_PSM_VDD(port);

	core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);



	/* Enable learning */

	reg = core_readl(priv, CORE_DIS_LEARN);

	reg &= ~BIT(port);

	core_writel(priv, reg, CORE_DIS_LEARN);



	/* Enable Broadcom tags for that port if requested */

	if (priv->brcm_tag_mask & BIT(port))

		b53_brcm_hdr_setup(ds, port);
@@ -222,8 +227,13 @@ static void bcm_sf2_port_disable(struct dsa_switch *ds, int port, 
	struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);

	u32 reg;



	if (priv->wol_ports_mask & (1 << port))

	/* Disable learning while in WoL mode */

	if (priv->wol_ports_mask & (1 << port)) {

		reg = core_readl(priv, CORE_DIS_LEARN);

		reg |= BIT(port);

		core_writel(priv, reg, CORE_DIS_LEARN);

		return;

	}



	if (port == priv->moca_port)

		bcm_sf2_port_intr_disable(priv, port);

drivers/net/dsa/bcm_sf2_regs.h

+2 −0
Original line number Diff line number Diff line
@@ -168,6 +168,8 @@ enum bcm_sf2_reg_offs { 
#define CORE_SWITCH_CTRL		0x00088

#define  MII_DUMB_FWDG_EN		(1 << 6)



#define CORE_DIS_LEARN			0x000f0



#define CORE_SFT_LRN_CTRL		0x000f8

#define  SW_LEARN_CNTL(x)		(1 << (x))

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