Merge tag 'net-next-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core:

   - support "prefer busy polling" NAPI operation mode, where we defer
     softirq for some time expecting applications to periodically busy
     poll

   - AF_XDP: improve efficiency by more batching and hindering the
     adjacency cache prefetcher

   - af_packet: make packet_fanout.arr size configurable up to 64K

   - tcp: optimize TCP zero copy receive in presence of partial or
     unaligned reads making zero copy a performance win for much smaller
     messages

   - XDP: add bulk APIs for returning / freeing frames

   - sched: support fragmenting IP packets as they come out of conntrack

   - net: allow virtual netdevs to forward UDP L4 and fraglist GSO skbs

  BPF:

   - BPF switch from crude rlimit-based to memcg-based memory accounting

   - BPF type format information for kernel modules and related tracing
     enhancements

   - BPF implement task local storage for BPF LSM

   - allow the FENTRY/FEXIT/RAW_TP tracing programs to use
     bpf_sk_storage

  Protocols:

   - mptcp: improve multiple xmit streams support, memory accounting and
     many smaller improvements

   - TLS: support CHACHA20-POLY1305 cipher

   - seg6: add support for SRv6 End.DT4/DT6 behavior

   - sctp: Implement RFC 6951: UDP Encapsulation of SCTP

   - ppp_generic: add ability to bridge channels directly

   - bridge: Connectivity Fault Management (CFM) support as is defined
     in IEEE 802.1Q section 12.14.

  Drivers:

   - mlx5: make use of the new auxiliary bus to organize the driver
     internals

   - mlx5: more accurate port TX timestamping support

   - mlxsw:
      - improve the efficiency of offloaded next hop updates by using
        the new nexthop object API
      - support blackhole nexthops
      - support IEEE 802.1ad (Q-in-Q) bridging

   - rtw88: major bluetooth co-existance improvements

   - iwlwifi: support new 6 GHz frequency band

   - ath11k: Fast Initial Link Setup (FILS)

   - mt7915: dual band concurrent (DBDC) support

   - net: ipa: add basic support for IPA v4.5

  Refactor:

   - a few pieces of in_interrupt() cleanup work from Sebastian Andrzej
     Siewior

   - phy: add support for shared interrupts; get rid of multiple driver
     APIs and have the drivers write a full IRQ handler, slight growth
     of driver code should be compensated by the simpler API which also
     allows shared IRQs

   - add common code for handling netdev per-cpu counters

   - move TX packet re-allocation from Ethernet switch tag drivers to a
     central place

   - improve efficiency and rename nla_strlcpy

   - number of W=1 warning cleanups as we now catch those in a patchwork
     build bot

  Old code removal:

   - wan: delete the DLCI / SDLA drivers

   - wimax: move to staging

   - wifi: remove old WDS wifi bridging support"

* tag 'net-next-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1922 commits)
  net: hns3: fix expression that is currently always true
  net: fix proc_fs init handling in af_packet and tls
  nfc: pn533: convert comma to semicolon
  af_vsock: Assign the vsock transport considering the vsock address flags
  af_vsock: Set VMADDR_FLAG_TO_HOST flag on the receive path
  vsock_addr: Check for supported flag values
  vm_sockets: Add VMADDR_FLAG_TO_HOST vsock flag
  vm_sockets: Add flags field in the vsock address data structure
  net: Disable NETIF_F_HW_TLS_TX when HW_CSUM is disabled
  tcp: Add logic to check for SYN w/ data in tcp_simple_retransmit
  net: mscc: ocelot: install MAC addresses in .ndo_set_rx_mode from process context
  nfc: s3fwrn5: Release the nfc firmware
  net: vxget: clean up sparse warnings
  mlxsw: spectrum_router: Use eXtended mezzanine to offload IPv4 router
  mlxsw: spectrum: Set KVH XLT cache mode for Spectrum2/3
  mlxsw: spectrum_router_xm: Introduce basic XM cache flushing
  mlxsw: reg: Add Router LPM Cache Enable Register
  mlxsw: reg: Add Router LPM Cache ML Delete Register
  mlxsw: spectrum_router_xm: Implement L-value tracking for M-index
  mlxsw: reg: Add XM Router M Table Register
  ...

1 files changed, 186 insertions, 9 deletions

diff --git a/drivers/net/phy/adin.c b/drivers/net/phy/adin.c
index 307f0ac1287b..55a0b91816e2 100644
--- a/drivers/net/phy/adin.c
+++ b/drivers/net/phy/adin.c
@@ -8,6 +8,7 @@
 #include <linux/bitfield.h>
 #include <linux/delay.h>
 #include <linux/errno.h>
+#include <linux/ethtool_netlink.h>
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/mii.h>
@@ -23,6 +24,7 @@
 #define ADIN1300_PHY_CTRL1			0x0012
 #define   ADIN1300_AUTO_MDI_EN			BIT(10)
 #define   ADIN1300_MAN_MDIX_EN			BIT(9)
+#define   ADIN1300_DIAG_CLK_EN			BIT(2)
 
 #define ADIN1300_RX_ERR_CNT			0x0014
 
@@ -69,6 +71,31 @@
 #define ADIN1300_CLOCK_STOP_REG			0x9400
 #define ADIN1300_LPI_WAKE_ERR_CNT_REG		0xa000
 
+#define ADIN1300_CDIAG_RUN			0xba1b
+#define   ADIN1300_CDIAG_RUN_EN			BIT(0)
+
+/*
+ * The XSIM3/2/1 and XSHRT3/2/1 are actually relative.
+ * For CDIAG_DTLD_RSLTS(0) it's ADIN1300_CDIAG_RSLT_XSIM3/2/1
+ * For CDIAG_DTLD_RSLTS(1) it's ADIN1300_CDIAG_RSLT_XSIM3/2/0
+ * For CDIAG_DTLD_RSLTS(2) it's ADIN1300_CDIAG_RSLT_XSIM3/1/0
+ * For CDIAG_DTLD_RSLTS(3) it's ADIN1300_CDIAG_RSLT_XSIM2/1/0
+ */
+#define ADIN1300_CDIAG_DTLD_RSLTS(x)		(0xba1d + (x))
+#define   ADIN1300_CDIAG_RSLT_BUSY		BIT(10)
+#define   ADIN1300_CDIAG_RSLT_XSIM3		BIT(9)
+#define   ADIN1300_CDIAG_RSLT_XSIM2		BIT(8)
+#define   ADIN1300_CDIAG_RSLT_XSIM1		BIT(7)
+#define   ADIN1300_CDIAG_RSLT_SIM		BIT(6)
+#define   ADIN1300_CDIAG_RSLT_XSHRT3		BIT(5)
+#define   ADIN1300_CDIAG_RSLT_XSHRT2		BIT(4)
+#define   ADIN1300_CDIAG_RSLT_XSHRT1		BIT(3)
+#define   ADIN1300_CDIAG_RSLT_SHRT		BIT(2)
+#define   ADIN1300_CDIAG_RSLT_OPEN		BIT(1)
+#define   ADIN1300_CDIAG_RSLT_GOOD		BIT(0)
+
+#define ADIN1300_CDIAG_FLT_DIST(x)		(0xba21 + (x))
+
 #define ADIN1300_GE_SOFT_RESET_REG		0xff0c
 #define   ADIN1300_GE_SOFT_RESET		BIT(0)
 
@@ -321,10 +348,9 @@ static int adin_set_downshift(struct phy_device *phydev, u8 cnt)
 		return -E2BIG;
 
 	val = FIELD_PREP(ADIN1300_DOWNSPEED_RETRIES_MSK, cnt);
-	val |= ADIN1300_LINKING_EN;
 
 	rc = phy_modify(phydev, ADIN1300_PHY_CTRL3,
-			ADIN1300_LINKING_EN | ADIN1300_DOWNSPEED_RETRIES_MSK,
+			ADIN1300_DOWNSPEED_RETRIES_MSK,
 			val);
 	if (rc < 0)
 		return rc;
@@ -445,12 +471,43 @@ static int adin_phy_ack_intr(struct phy_device *phydev)
 
 static int adin_phy_config_intr(struct phy_device *phydev)
 {
-	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
-		return phy_set_bits(phydev, ADIN1300_INT_MASK_REG,
-				    ADIN1300_INT_MASK_EN);
+	int err;
+
+	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
+		err = adin_phy_ack_intr(phydev);
+		if (err)
+			return err;
+
+		err = phy_set_bits(phydev, ADIN1300_INT_MASK_REG,
+				   ADIN1300_INT_MASK_EN);
+	} else {
+		err = phy_clear_bits(phydev, ADIN1300_INT_MASK_REG,
+				     ADIN1300_INT_MASK_EN);
+		if (err)
+			return err;
+
+		err = adin_phy_ack_intr(phydev);
+	}
+
+	return err;
+}
+
+static irqreturn_t adin_phy_handle_interrupt(struct phy_device *phydev)
+{
+	int irq_status;
+
+	irq_status = phy_read(phydev, ADIN1300_INT_STATUS_REG);
+	if (irq_status < 0) {
+		phy_error(phydev);
+		return IRQ_NONE;
+	}
 
-	return phy_clear_bits(phydev, ADIN1300_INT_MASK_REG,
-			      ADIN1300_INT_MASK_EN);
+	if (!(irq_status & ADIN1300_INT_LINK_STAT_CHNG_EN))
+		return IRQ_NONE;
+
+	phy_trigger_machine(phydev);
+
+	return IRQ_HANDLED;
 }
 
 static int adin_cl45_to_adin_reg(struct phy_device *phydev, int devad,
@@ -555,6 +612,14 @@ static int adin_config_aneg(struct phy_device *phydev)
 {
 	int ret;
 
+	ret = phy_clear_bits(phydev, ADIN1300_PHY_CTRL1, ADIN1300_DIAG_CLK_EN);
+	if (ret < 0)
+		return ret;
+
+	ret = phy_set_bits(phydev, ADIN1300_PHY_CTRL3, ADIN1300_LINKING_EN);
+	if (ret < 0)
+		return ret;
+
 	ret = adin_config_mdix(phydev);
 	if (ret)
 		return ret;
@@ -725,10 +790,117 @@ static int adin_probe(struct phy_device *phydev)
 	return 0;
 }
 
+static int adin_cable_test_start(struct phy_device *phydev)
+{
+	int ret;
+
+	ret = phy_clear_bits(phydev, ADIN1300_PHY_CTRL3, ADIN1300_LINKING_EN);
+	if (ret < 0)
+		return ret;
+
+	ret = phy_clear_bits(phydev, ADIN1300_PHY_CTRL1, ADIN1300_DIAG_CLK_EN);
+	if (ret < 0)
+		return ret;
+
+	/* wait a bit for the clock to stabilize */
+	msleep(50);
+
+	return phy_set_bits_mmd(phydev, MDIO_MMD_VEND1, ADIN1300_CDIAG_RUN,
+				ADIN1300_CDIAG_RUN_EN);
+}
+
+static int adin_cable_test_report_trans(int result)
+{
+	int mask;
+
+	if (result & ADIN1300_CDIAG_RSLT_GOOD)
+		return ETHTOOL_A_CABLE_RESULT_CODE_OK;
+	if (result & ADIN1300_CDIAG_RSLT_OPEN)
+		return ETHTOOL_A_CABLE_RESULT_CODE_OPEN;
+
+	/* short with other pairs */
+	mask = ADIN1300_CDIAG_RSLT_XSHRT3 |
+	       ADIN1300_CDIAG_RSLT_XSHRT2 |
+	       ADIN1300_CDIAG_RSLT_XSHRT1;
+	if (result & mask)
+		return ETHTOOL_A_CABLE_RESULT_CODE_CROSS_SHORT;
+
+	if (result & ADIN1300_CDIAG_RSLT_SHRT)
+		return ETHTOOL_A_CABLE_RESULT_CODE_SAME_SHORT;
+
+	return ETHTOOL_A_CABLE_RESULT_CODE_UNSPEC;
+}
+
+static int adin_cable_test_report_pair(struct phy_device *phydev,
+				       unsigned int pair)
+{
+	int fault_rslt;
+	int ret;
+
+	ret = phy_read_mmd(phydev, MDIO_MMD_VEND1,
+			   ADIN1300_CDIAG_DTLD_RSLTS(pair));
+	if (ret < 0)
+		return ret;
+
+	fault_rslt = adin_cable_test_report_trans(ret);
+
+	ret = ethnl_cable_test_result(phydev, pair, fault_rslt);
+	if (ret < 0)
+		return ret;
+
+	ret = phy_read_mmd(phydev, MDIO_MMD_VEND1,
+			   ADIN1300_CDIAG_FLT_DIST(pair));
+	if (ret < 0)
+		return ret;
+
+	switch (fault_rslt) {
+	case ETHTOOL_A_CABLE_RESULT_CODE_OPEN:
+	case ETHTOOL_A_CABLE_RESULT_CODE_SAME_SHORT:
+	case ETHTOOL_A_CABLE_RESULT_CODE_CROSS_SHORT:
+		return ethnl_cable_test_fault_length(phydev, pair, ret * 100);
+	default:
+		return  0;
+	}
+}
+
+static int adin_cable_test_report(struct phy_device *phydev)
+{
+	unsigned int pair;
+	int ret;
+
+	for (pair = ETHTOOL_A_CABLE_PAIR_A; pair <= ETHTOOL_A_CABLE_PAIR_D; pair++) {
+		ret = adin_cable_test_report_pair(phydev, pair);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int adin_cable_test_get_status(struct phy_device *phydev,
+				      bool *finished)
+{
+	int ret;
+
+	*finished = false;
+
+	ret = phy_read_mmd(phydev, MDIO_MMD_VEND1, ADIN1300_CDIAG_RUN);
+	if (ret < 0)
+		return ret;
+
+	if (ret & ADIN1300_CDIAG_RUN_EN)
+		return 0;
+
+	*finished = true;
+
+	return adin_cable_test_report(phydev);
+}
+
 static struct phy_driver adin_driver[] = {
 	{
 		PHY_ID_MATCH_MODEL(PHY_ID_ADIN1200),
 		.name		= "ADIN1200",
+		.flags		= PHY_POLL_CABLE_TEST,
 		.probe		= adin_probe,
 		.config_init	= adin_config_init,
 		.soft_reset	= adin_soft_reset,
@@ -736,8 +908,8 @@ static struct phy_driver adin_driver[] = {
 		.read_status	= adin_read_status,
 		.get_tunable	= adin_get_tunable,
 		.set_tunable	= adin_set_tunable,
-		.ack_interrupt	= adin_phy_ack_intr,
 		.config_intr	= adin_phy_config_intr,
+		.handle_interrupt = adin_phy_handle_interrupt,
 		.get_sset_count	= adin_get_sset_count,
 		.get_strings	= adin_get_strings,
 		.get_stats	= adin_get_stats,
@@ -745,10 +917,13 @@ static struct phy_driver adin_driver[] = {
 		.suspend	= genphy_suspend,
 		.read_mmd	= adin_read_mmd,
 		.write_mmd	= adin_write_mmd,
+		.cable_test_start	= adin_cable_test_start,
+		.cable_test_get_status	= adin_cable_test_get_status,
 	},
 	{
 		PHY_ID_MATCH_MODEL(PHY_ID_ADIN1300),
 		.name		= "ADIN1300",
+		.flags		= PHY_POLL_CABLE_TEST,
 		.probe		= adin_probe,
 		.config_init	= adin_config_init,
 		.soft_reset	= adin_soft_reset,
@@ -756,8 +931,8 @@ static struct phy_driver adin_driver[] = {
 		.read_status	= adin_read_status,
 		.get_tunable	= adin_get_tunable,
 		.set_tunable	= adin_set_tunable,
-		.ack_interrupt	= adin_phy_ack_intr,
 		.config_intr	= adin_phy_config_intr,
+		.handle_interrupt = adin_phy_handle_interrupt,
 		.get_sset_count	= adin_get_sset_count,
 		.get_strings	= adin_get_strings,
 		.get_stats	= adin_get_stats,
@@ -765,6 +940,8 @@ static struct phy_driver adin_driver[] = {
 		.suspend	= genphy_suspend,
 		.read_mmd	= adin_read_mmd,
 		.write_mmd	= adin_write_mmd,
+		.cable_test_start	= adin_cable_test_start,
+		.cable_test_get_status	= adin_cable_test_get_status,
 	},
 };