[PATCH v2 net-next 7/9] net: dsa: microchip: add support for port mirror operations
From: Prasanna Vengateshan <hidden>
Date: 2021-04-22 09:44:01
Also in:
lkml, netdev
Subsystem:
microchip ksz series ethernet switch driver, networking drivers, networking [dsa], the rest · Maintainers:
Woojung Huh, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Vladimir Oltean, Linus Torvalds
Added support for port_mirror_add() and port_mirror_del operations Signed-off-by: Prasanna Vengateshan <redacted> --- drivers/net/dsa/microchip/lan937x_main.c | 50 ++++++++++++++++++++++++ 1 file changed, 50 insertions(+)
diff --git a/drivers/net/dsa/microchip/lan937x_main.c b/drivers/net/dsa/microchip/lan937x_main.c
index 573d2dd906f5..bfce5098ea69 100644
--- a/drivers/net/dsa/microchip/lan937x_main.c
+++ b/drivers/net/dsa/microchip/lan937x_main.c@@ -128,6 +128,54 @@ static void lan937x_port_stp_state_set(struct dsa_switch *ds, int port, mutex_unlock(&dev->dev_mutex); } +static int lan937x_port_mirror_add(struct dsa_switch *ds, int port, + struct dsa_mall_mirror_tc_entry *mirror, + bool ingress) +{ + struct ksz_device *dev = ds->priv; + int rc; + + if (ingress) + rc = lan937x_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_RX, true); + else + rc = lan937x_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_TX, true); + + if (rc < 0) + return rc; + + rc = lan937x_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_SNIFFER, false); + if (rc < 0) + return rc; + + /* configure mirror port */ + rc = lan937x_port_cfg(dev, mirror->to_local_port, P_MIRROR_CTRL, + PORT_MIRROR_SNIFFER, true); + if (rc < 0) + return rc; + + rc = lan937x_cfg(dev, S_MIRROR_CTRL, SW_MIRROR_RX_TX, false); + + return rc; +} + +static void lan937x_port_mirror_del(struct dsa_switch *ds, int port, + struct dsa_mall_mirror_tc_entry *mirror) +{ + struct ksz_device *dev = ds->priv; + u8 data; + + if (mirror->ingress) + lan937x_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_RX, false); + else + lan937x_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_TX, false); + + lan937x_pread8(dev, port, P_MIRROR_CTRL, &data); + + if (!(data & (PORT_MIRROR_RX | PORT_MIRROR_TX))) + lan937x_port_cfg(dev, mirror->to_local_port, P_MIRROR_CTRL, + PORT_MIRROR_SNIFFER, false); +} + static phy_interface_t lan937x_get_interface(struct ksz_device *dev, int port) { phy_interface_t interface;
@@ -396,6 +444,8 @@ const struct dsa_switch_ops lan937x_switch_ops = { .port_bridge_flags = lan937x_port_bridge_flags, .port_stp_state_set = lan937x_port_stp_state_set, .port_fast_age = ksz_port_fast_age, + .port_mirror_add = lan937x_port_mirror_add, + .port_mirror_del = lan937x_port_mirror_del, .port_max_mtu = lan937x_get_max_mtu, .port_change_mtu = lan937x_change_mtu, .phylink_validate = lan937x_phylink_validate,
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2.27.0