kernel: copy kernel 4.19 code to 5.4

[openwrt/openwrt.git] / target / linux / generic / backport-5.4 / 703-v4.20-net-ethernet-Add-helper-for-set_pauseparam-for-Asym-.patch

diff --git a/target/linux/generic/backport-5.4/703-v4.20-net-ethernet-Add-helper-for-set_pauseparam-for-Asym-.patch b/target/linux/generic/backport-5.4/703-v4.20-net-ethernet-Add-helper-for-set_pauseparam-for-Asym-.patch
new file mode 100644 (file)
index 0000000..4ad3bf6
--- /dev/null
+++ b/target/linux/generic/backport-5.4/703-v4.20-net-ethernet-Add-helper-for-set_pauseparam-for-Asym-.patch
@@ -0,0 +1,66 @@
+From ce825df56e0480a2cbb296e38976babafb57e503 Mon Sep 17 00:00:00 2001
+From: Andrew Lunn <andrew@lunn.ch>
+Date: Wed, 12 Sep 2018 01:53:17 +0200
+Subject: [PATCH 601/660] net: ethernet: Add helper for set_pauseparam for Asym
+ Pause
+
+ethtool can be used to enable/disable pause. Add a helper to configure
+the PHY when asym pause is supported.
+
+Signed-off-by: Andrew Lunn <andrew@lunn.ch>
+Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/phy/phy_device.c | 30 ++++++++++++++++++++++++++++++
+ include/linux/phy.h          |  1 +
+ 2 files changed, 31 insertions(+)
+
+--- a/drivers/net/phy/phy_device.c
++++ b/drivers/net/phy/phy_device.c
+@@ -1790,6 +1790,36 @@ void phy_support_asym_pause(struct phy_d
+ }
+ EXPORT_SYMBOL(phy_support_asym_pause);
+ 
++/**
++ * phy_set_asym_pause - Configure Pause and Asym Pause
++ * @phydev: target phy_device struct
++ * @rx: Receiver Pause is supported
++ * @tx: Transmit Pause is supported
++ *
++ * Description: Configure advertised Pause support depending on if
++ * transmit and receiver pause is supported. If there has been a
++ * change in adverting, trigger a new autoneg. Generally called from
++ * the set_pauseparam .ndo.
++ */
++void phy_set_asym_pause(struct phy_device *phydev, bool rx, bool tx)
++{
++      u16 oldadv = phydev->advertising;
++      u16 newadv = oldadv &= ~(SUPPORTED_Pause | SUPPORTED_Asym_Pause);
++
++      if (rx)
++              newadv |= SUPPORTED_Pause | SUPPORTED_Asym_Pause;
++      if (tx)
++              newadv ^= SUPPORTED_Asym_Pause;
++
++      if (oldadv != newadv) {
++              phydev->advertising = newadv;
++
++              if (phydev->autoneg)
++                      phy_start_aneg(phydev);
++      }
++}
++EXPORT_SYMBOL(phy_set_asym_pause);
++
+ static void of_set_phy_supported(struct phy_device *phydev)
+ {
+       struct device_node *node = phydev->mdio.dev.of_node;
+--- a/include/linux/phy.h
++++ b/include/linux/phy.h
+@@ -1050,6 +1050,7 @@ int phy_start_interrupts(struct phy_devi
+ void phy_print_status(struct phy_device *phydev);
+ int phy_set_max_speed(struct phy_device *phydev, u32 max_speed);
+ void phy_support_asym_pause(struct phy_device *phydev);
++void phy_set_asym_pause(struct phy_device *phydev, bool rx, bool tx);
+ 
+ int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask,
+                      int (*run)(struct phy_device *));