[PATCH net-next 6/8] net: dsa: microchip: add support for port mirror operations
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STALE2055d
SUPERSEDED
From: Prasanna Vengateshan <hidden>
Date: 2021-01-28 06:47:27
Also in:
linux-devicetree, lkml
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, Andrew Lunn, Vladimir Oltean, Linus Torvalds
Status: Superseded by v11 (posted 2022-03-25). [go to v11]
Revision v1 (11 revisions archived).
Revisions (11)
Added support for port_mirror_add() and port_mirror_del operations Signed-off-by: Prasanna Vengateshan <redacted> --- drivers/net/dsa/microchip/lan937x_main.c | 42 ++++++++++++++++++++++++ 1 file changed, 42 insertions(+)
diff --git a/drivers/net/dsa/microchip/lan937x_main.c b/drivers/net/dsa/microchip/lan937x_main.c
index 5693c59df497..aa2efa4e5823 100644
--- a/drivers/net/dsa/microchip/lan937x_main.c
+++ b/drivers/net/dsa/microchip/lan937x_main.c@@ -162,6 +162,46 @@ 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; + + if (ingress) + lan937x_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_RX, true); + else + lan937x_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_TX, true); + + lan937x_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_SNIFFER, false); + + /* configure mirror port */ + lan937x_port_cfg(dev, mirror->to_local_port, P_MIRROR_CTRL, + PORT_MIRROR_SNIFFER, true); + + lan937x_cfg(dev, S_MIRROR_CTRL, SW_MIRROR_RX_TX, false); + + return 0; +} + +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;
@@ -393,6 +433,8 @@ const struct dsa_switch_ops lan937x_switch_ops = { .port_bridge_leave = ksz_port_bridge_leave, .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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2.25.1