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Message-Id: <20230625115343.1603330-3-paweldembicki@gmail.com>
Date: Sun, 25 Jun 2023 13:53:38 +0200
From: Pawel Dembicki <paweldembicki@...il.com>
To: netdev@...r.kernel.org
Cc: Pawel Dembicki <paweldembicki@...il.com>,
Linus Walleij <linus.walleij@...aro.org>,
Andrew Lunn <andrew@...n.ch>,
Florian Fainelli <f.fainelli@...il.com>,
Vladimir Oltean <olteanv@...il.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>, linux-kernel@...r.kernel.org
Subject: [PATCH net-next v2 3/7] net: dsa: vsc73xx: add port_stp_state_set function
This isn't fully functional implementation of 802.1D, but
port_stp_state_set is required for future tag8021q operations.
This implementation handle properly all states, but vsc 73xx don't
forward STP packets.
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Pawel Dembicki <paweldembicki@...il.com>
---
v2:
- fix kdoc
drivers/net/dsa/vitesse-vsc73xx-core.c | 51 +++++++++++++++++++++++---
drivers/net/dsa/vitesse-vsc73xx.h | 2 +
2 files changed, 47 insertions(+), 6 deletions(-)
diff --git a/drivers/net/dsa/vitesse-vsc73xx-core.c b/drivers/net/dsa/vitesse-vsc73xx-core.c
index 221672b9e17f..f123ce2ed244 100644
--- a/drivers/net/dsa/vitesse-vsc73xx-core.c
+++ b/drivers/net/dsa/vitesse-vsc73xx-core.c
@@ -164,6 +164,10 @@
#define VSC73XX_AGENCTRL 0xf0
#define VSC73XX_CAPRST 0xff
+#define VSC73XX_SRCMASKS_CPU_COPY BIT(27)
+#define VSC73XX_SRCMASKS_MIRROR BIT(26)
+#define VSC73XX_SRCMASKS_PORTS_MASK GENMASK(7, 0)
+
#define VSC73XX_MACACCESS_CPU_COPY BIT(14)
#define VSC73XX_MACACCESS_FWD_KILL BIT(13)
#define VSC73XX_MACACCESS_IGNORE_VLAN BIT(12)
@@ -620,15 +624,17 @@ static int vsc73xx_setup(struct dsa_switch *ds)
vsc73xx_write(vsc, VSC73XX_BLOCK_SYSTEM, 0, VSC73XX_GMIIDELAY,
VSC73XX_GMIIDELAY_GMII0_GTXDELAY_2_0_NS |
VSC73XX_GMIIDELAY_GMII0_RXDELAY_2_0_NS);
- /* Enable reception of frames on all ports */
- vsc73xx_write(vsc, VSC73XX_BLOCK_ANALYZER, 0, VSC73XX_RECVMASK,
- 0x5f);
/* IP multicast flood mask (table 144) */
vsc73xx_write(vsc, VSC73XX_BLOCK_ANALYZER, 0, VSC73XX_IFLODMSK,
0xff);
mdelay(50);
+ /*configure forward map to CPU <-> port only*/
+ for (i = 0; i < vsc->ds->num_ports; i++)
+ vsc->forward_map[i] = VSC73XX_SRCMASKS_PORTS_MASK & BIT(CPU_PORT);
+ vsc->forward_map[CPU_PORT] = VSC73XX_SRCMASKS_PORTS_MASK & ~BIT(CPU_PORT);
+
/* Release reset from the internal PHYs */
vsc73xx_write(vsc, VSC73XX_BLOCK_SYSTEM, 0, VSC73XX_GLORESET,
VSC73XX_GLORESET_PHY_RESET);
@@ -871,9 +877,6 @@ static void vsc73xx_phylink_mac_link_up(struct dsa_switch *ds, int port,
if (duplex == DUPLEX_FULL)
val |= VSC73XX_MAC_CFG_FDX;
- /* Enable port (forwarding) in the receieve mask */
- vsc73xx_update_bits(vsc, VSC73XX_BLOCK_ANALYZER, 0,
- VSC73XX_RECVMASK, BIT(port), BIT(port));
vsc73xx_adjust_enable_port(vsc, port, val);
}
@@ -1040,6 +1043,41 @@ static int vsc73xx_get_max_mtu(struct dsa_switch *ds, int port)
return 9600;
}
+static void vsc73xx_port_stp_state_set(struct dsa_switch *ds, int port,
+ u8 state)
+{
+ struct vsc73xx *vsc = ds->priv;
+ /* FIXME: STP frames isn't forwarded at this moment. BPDU frames are
+ * forwarded only from to PI/SI interface. For more info see chapter
+ * 2.7.1 (CPU Forwarding) in datasheet.
+ * This function is required for tag8021q operations.
+ */
+
+ if (state == BR_STATE_BLOCKING)
+ vsc73xx_update_bits(vsc, VSC73XX_BLOCK_ANALYZER, 0,
+ VSC73XX_RECVMASK, BIT(port), 0);
+ else
+ vsc73xx_update_bits(vsc, VSC73XX_BLOCK_ANALYZER, 0,
+ VSC73XX_RECVMASK, BIT(port), BIT(port));
+
+ if (state == BR_STATE_LEARNING || state == BR_STATE_FORWARDING)
+ vsc73xx_update_bits(vsc, VSC73XX_BLOCK_ANALYZER, 0,
+ VSC73XX_LEARNMASK, BIT(port), BIT(port));
+ else
+ vsc73xx_update_bits(vsc, VSC73XX_BLOCK_ANALYZER, 0,
+ VSC73XX_LEARNMASK, BIT(port), 0);
+
+ if (state == BR_STATE_FORWARDING)
+ vsc73xx_update_bits(vsc, VSC73XX_BLOCK_ANALYZER, 0,
+ VSC73XX_SRCMASKS + port,
+ VSC73XX_SRCMASKS_PORTS_MASK,
+ vsc->forward_map[port]);
+ else
+ vsc73xx_update_bits(vsc, VSC73XX_BLOCK_ANALYZER, 0,
+ VSC73XX_SRCMASKS + port,
+ VSC73XX_SRCMASKS_PORTS_MASK, 0);
+}
+
static const struct dsa_switch_ops vsc73xx_ds_ops = {
.get_tag_protocol = vsc73xx_get_tag_protocol,
.setup = vsc73xx_setup,
@@ -1056,6 +1094,7 @@ static const struct dsa_switch_ops vsc73xx_ds_ops = {
.port_disable = vsc73xx_port_disable,
.port_change_mtu = vsc73xx_change_mtu,
.port_max_mtu = vsc73xx_get_max_mtu,
+ .port_stp_state_set = vsc73xx_port_stp_state_set,
};
static int vsc73xx_gpio_get(struct gpio_chip *chip, unsigned int offset)
diff --git a/drivers/net/dsa/vitesse-vsc73xx.h b/drivers/net/dsa/vitesse-vsc73xx.h
index 30b1f0a36566..c4d5398edeeb 100644
--- a/drivers/net/dsa/vitesse-vsc73xx.h
+++ b/drivers/net/dsa/vitesse-vsc73xx.h
@@ -5,6 +5,7 @@
/**
* struct vsc73xx - VSC73xx state container
+ * @forward_map: Forward table cache
*/
struct vsc73xx {
struct device *dev;
@@ -15,6 +16,7 @@ struct vsc73xx {
u8 addr[ETH_ALEN];
const struct vsc73xx_ops *ops;
void *priv;
+ u8 forward_map[8];
};
struct vsc73xx_ops {
--
2.34.1
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