Merge tag 'net-6.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netHEADmaster

Pull networking fixes from Paolo Abeni:
 "Including fixes from Bluetooth.

  Current release - regressions:

   - tcp: refine sk_rcvbuf increase for ooo packets

   - bluetooth: fix attempting to send HCI_Disconnect to BIS handle

   - rxrpc: fix over large frame size warning

   - eth: bcmgenet: initialize u64 stats seq counter

  Previous releases - regressions:

   - tcp: correct signedness in skb remaining space calculation

   - sched: abort __tc_modify_qdisc if parent class does not exist

   - vsock: fix transport_{g2h,h2g} TOCTOU

   - rxrpc: fix bug due to prealloc collision

   - tipc: fix use-after-free in tipc_conn_close().

   - bluetooth: fix not marking Broadcast Sink BIS as connected

   - phy: qca808x: fix WoL issue by utilizing at8031_set_wol()

   - eth: am65-cpsw-nuss: fix skb size by accounting for skb_shared_info

  Previous releases - always broken:

   - netlink: fix wraparounds of sk->sk_rmem_alloc.

   - atm: fix infinite recursive call of clip_push().

   - eth:
      - stmmac: fix interrupt handling for level-triggered mode in DWC_XGMAC2
      - rtsn: fix a null pointer dereference in rtsn_probe()"

* tag 'net-6.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (37 commits)
  net/sched: sch_qfq: Fix null-deref in agg_dequeue
  rxrpc: Fix oops due to non-existence of prealloc backlog struct
  rxrpc: Fix bug due to prealloc collision
  MAINTAINERS: remove myself as netronome maintainer
  selftests/net: packetdrill: add tcp_ooo-before-and-after-accept.pkt
  tcp: refine sk_rcvbuf increase for ooo packets
  net/sched: Abort __tc_modify_qdisc if parent class does not exist
  net: ethernet: ti: am65-cpsw-nuss: Fix skb size by accounting for skb_shared_info
  net: thunderx: avoid direct MTU assignment after WRITE_ONCE()
  selftests/tc-testing: Create test case for UAF scenario with DRR/NETEM/BLACKHOLE chain
  atm: clip: Fix NULL pointer dereference in vcc_sendmsg()
  atm: clip: Fix infinite recursive call of clip_push().
  atm: clip: Fix memory leak of struct clip_vcc.
  atm: clip: Fix potential null-ptr-deref in to_atmarpd().
  net: phy: smsc: Fix link failure in forced mode with Auto-MDIX
  net: phy: smsc: Force predictable MDI-X state on LAN87xx
  net: phy: smsc: Fix Auto-MDIX configuration when disabled by strap
  net: stmmac: Fix interrupt handling for level-triggered mode in DWC_XGMAC2
  rxrpc: Fix over large frame size warning
  net: airoha: Fix an error handling path in airoha_probe()
  ...

5 files changed, 83 insertions, 33 deletions

diff --git a/drivers/net/phy/qcom/at803x.c b/drivers/net/phy/qcom/at803x.c
index 26350b962890..8f26e395e39f 100644
--- a/drivers/net/phy/qcom/at803x.c
+++ b/drivers/net/phy/qcom/at803x.c
@@ -26,9 +26,6 @@
 
 #define AT803X_LED_CONTROL			0x18
 
-#define AT803X_PHY_MMD3_WOL_CTRL		0x8012
-#define AT803X_WOL_EN				BIT(5)
-
 #define AT803X_REG_CHIP_CONFIG			0x1f
 #define AT803X_BT_BX_REG_SEL			0x8000
 
@@ -866,30 +863,6 @@ static int at8031_config_init(struct phy_device *phydev)
 	return at803x_config_init(phydev);
 }
 
-static int at8031_set_wol(struct phy_device *phydev,
-			  struct ethtool_wolinfo *wol)
-{
-	int ret;
-
-	/* First setup MAC address and enable WOL interrupt */
-	ret = at803x_set_wol(phydev, wol);
-	if (ret)
-		return ret;
-
-	if (wol->wolopts & WAKE_MAGIC)
-		/* Enable WOL function for 1588 */
-		ret = phy_modify_mmd(phydev, MDIO_MMD_PCS,
-				     AT803X_PHY_MMD3_WOL_CTRL,
-				     0, AT803X_WOL_EN);
-	else
-		/* Disable WoL function for 1588 */
-		ret = phy_modify_mmd(phydev, MDIO_MMD_PCS,
-				     AT803X_PHY_MMD3_WOL_CTRL,
-				     AT803X_WOL_EN, 0);
-
-	return ret;
-}
-
 static int at8031_config_intr(struct phy_device *phydev)
 {
 	struct at803x_priv *priv = phydev->priv;
diff --git a/drivers/net/phy/qcom/qca808x.c b/drivers/net/phy/qcom/qca808x.c
index 71498c518f0f..6de16c0eaa08 100644
--- a/drivers/net/phy/qcom/qca808x.c
+++ b/drivers/net/phy/qcom/qca808x.c
@@ -633,7 +633,7 @@ static struct phy_driver qca808x_driver[] = {
 	.handle_interrupt	= at803x_handle_interrupt,
 	.get_tunable		= at803x_get_tunable,
 	.set_tunable		= at803x_set_tunable,
-	.set_wol		= at803x_set_wol,
+	.set_wol		= at8031_set_wol,
 	.get_wol		= at803x_get_wol,
 	.get_features		= qca808x_get_features,
 	.config_aneg		= qca808x_config_aneg,
diff --git a/drivers/net/phy/qcom/qcom-phy-lib.c b/drivers/net/phy/qcom/qcom-phy-lib.c
index d28815ef56bb..af7d0d8e81be 100644
--- a/drivers/net/phy/qcom/qcom-phy-lib.c
+++ b/drivers/net/phy/qcom/qcom-phy-lib.c
@@ -115,6 +115,31 @@ int at803x_set_wol(struct phy_device *phydev,
 }
 EXPORT_SYMBOL_GPL(at803x_set_wol);
 
+int at8031_set_wol(struct phy_device *phydev,
+		   struct ethtool_wolinfo *wol)
+{
+	int ret;
+
+	/* First setup MAC address and enable WOL interrupt */
+	ret = at803x_set_wol(phydev, wol);
+	if (ret)
+		return ret;
+
+	if (wol->wolopts & WAKE_MAGIC)
+		/* Enable WOL function for 1588 */
+		ret = phy_modify_mmd(phydev, MDIO_MMD_PCS,
+				     AT803X_PHY_MMD3_WOL_CTRL,
+				     0, AT803X_WOL_EN);
+	else
+		/* Disable WoL function for 1588 */
+		ret = phy_modify_mmd(phydev, MDIO_MMD_PCS,
+				     AT803X_PHY_MMD3_WOL_CTRL,
+				     AT803X_WOL_EN, 0);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(at8031_set_wol);
+
 void at803x_get_wol(struct phy_device *phydev,
 		    struct ethtool_wolinfo *wol)
 {
diff --git a/drivers/net/phy/qcom/qcom.h b/drivers/net/phy/qcom/qcom.h
index 4bb541728846..7f7151c8baca 100644
--- a/drivers/net/phy/qcom/qcom.h
+++ b/drivers/net/phy/qcom/qcom.h
@@ -172,6 +172,9 @@
 #define AT803X_LOC_MAC_ADDR_16_31_OFFSET	0x804B
 #define AT803X_LOC_MAC_ADDR_32_47_OFFSET	0x804A
 
+#define AT803X_PHY_MMD3_WOL_CTRL		0x8012
+#define AT803X_WOL_EN				BIT(5)
+
 #define AT803X_DEBUG_ADDR			0x1D
 #define AT803X_DEBUG_DATA			0x1E
 
@@ -215,6 +218,8 @@ int at803x_debug_reg_mask(struct phy_device *phydev, u16 reg,
 int at803x_debug_reg_write(struct phy_device *phydev, u16 reg, u16 data);
 int at803x_set_wol(struct phy_device *phydev,
 		   struct ethtool_wolinfo *wol);
+int at8031_set_wol(struct phy_device *phydev,
+		   struct ethtool_wolinfo *wol);
 void at803x_get_wol(struct phy_device *phydev,
 		    struct ethtool_wolinfo *wol);
 int at803x_ack_interrupt(struct phy_device *phydev);
diff --git a/drivers/net/phy/smsc.c b/drivers/net/phy/smsc.c
index 31463b9e5697..b6489da5cfcd 100644
--- a/drivers/net/phy/smsc.c
+++ b/drivers/net/phy/smsc.c
@@ -155,10 +155,29 @@ static int smsc_phy_reset(struct phy_device *phydev)
 
 static int lan87xx_config_aneg(struct phy_device *phydev)
 {
-	int rc;
+	u8 mdix_ctrl;
 	int val;
+	int rc;
+
+	/* When auto-negotiation is disabled (forced mode), the PHY's
+	 * Auto-MDIX will continue toggling the TX/RX pairs.
+	 *
+	 * To establish a stable link, we must select a fixed MDI mode.
+	 * If the user has not specified a fixed MDI mode (i.e., mdix_ctrl is
+	 * 'auto'), we default to ETH_TP_MDI. This choice of a ETH_TP_MDI mode
+	 * mirrors the behavior the hardware would exhibit if the AUTOMDIX_EN
+	 * strap were configured for a fixed MDI connection.
+	 */
+	if (phydev->autoneg == AUTONEG_DISABLE) {
+		if (phydev->mdix_ctrl == ETH_TP_MDI_AUTO)
+			mdix_ctrl = ETH_TP_MDI;
+		else
+			mdix_ctrl = phydev->mdix_ctrl;
+	} else {
+		mdix_ctrl = phydev->mdix_ctrl;
+	}
 
-	switch (phydev->mdix_ctrl) {
+	switch (mdix_ctrl) {
 	case ETH_TP_MDI:
 		val = SPECIAL_CTRL_STS_OVRRD_AMDIX_;
 		break;
@@ -167,7 +186,8 @@ static int lan87xx_config_aneg(struct phy_device *phydev)
 			SPECIAL_CTRL_STS_AMDIX_STATE_;
 		break;
 	case ETH_TP_MDI_AUTO:
-		val = SPECIAL_CTRL_STS_AMDIX_ENABLE_;
+		val = SPECIAL_CTRL_STS_OVRRD_AMDIX_ |
+			SPECIAL_CTRL_STS_AMDIX_ENABLE_;
 		break;
 	default:
 		return genphy_config_aneg(phydev);
@@ -183,7 +203,7 @@ static int lan87xx_config_aneg(struct phy_device *phydev)
 	rc |= val;
 	phy_write(phydev, SPECIAL_CTRL_STS, rc);
 
-	phydev->mdix = phydev->mdix_ctrl;
+	phydev->mdix = mdix_ctrl;
 	return genphy_config_aneg(phydev);
 }
 
@@ -261,6 +281,33 @@ int lan87xx_read_status(struct phy_device *phydev)
 }
 EXPORT_SYMBOL_GPL(lan87xx_read_status);
 
+static int lan87xx_phy_config_init(struct phy_device *phydev)
+{
+	int rc;
+
+	/* The LAN87xx PHY's initial MDI-X mode is determined by the AUTOMDIX_EN
+	 * hardware strap, but the driver cannot read the strap's status. This
+	 * creates an unpredictable initial state.
+	 *
+	 * To ensure consistent and reliable behavior across all boards,
+	 * override the strap configuration on initialization and force the PHY
+	 * into a known state with Auto-MDIX enabled, which is the expected
+	 * default for modern hardware.
+	 */
+	rc = phy_modify(phydev, SPECIAL_CTRL_STS,
+			SPECIAL_CTRL_STS_OVRRD_AMDIX_ |
+			SPECIAL_CTRL_STS_AMDIX_ENABLE_ |
+			SPECIAL_CTRL_STS_AMDIX_STATE_,
+			SPECIAL_CTRL_STS_OVRRD_AMDIX_ |
+			SPECIAL_CTRL_STS_AMDIX_ENABLE_);
+	if (rc < 0)
+		return rc;
+
+	phydev->mdix_ctrl = ETH_TP_MDI_AUTO;
+
+	return smsc_phy_config_init(phydev);
+}
+
 static int lan874x_phy_config_init(struct phy_device *phydev)
 {
 	u16 val;
@@ -695,7 +742,7 @@ static struct phy_driver smsc_phy_driver[] = {
 
 	/* basic functions */
 	.read_status	= lan87xx_read_status,
-	.config_init	= smsc_phy_config_init,
+	.config_init	= lan87xx_phy_config_init,
 	.soft_reset	= smsc_phy_reset,
 	.config_aneg	= lan87xx_config_aneg,