Merge tag 'net-next-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking changes from Paolo Abeni:
 "Core:

   - Refactor the forward memory allocation to better cope with memory
     pressure with many open sockets, moving from a per socket cache to
     a per-CPU one

   - Replace rwlocks with RCU for better fairness in ping, raw sockets
     and IP multicast router.

   - Network-side support for IO uring zero-copy send.

   - A few skb drop reason improvements, including codegen the source
     file with string mapping instead of using macro magic.

   - Rename reference tracking helpers to a more consistent netdev_*
     schema.

   - Adapt u64_stats_t type to address load/store tearing issues.

   - Refine debug helper usage to reduce the log noise caused by bots.

  BPF:

   - Improve socket map performance, avoiding skb cloning on read
     operation.

   - Add support for 64 bits enum, to match types exposed by kernel.

   - Introduce support for sleepable uprobes program.

   - Introduce support for enum textual representation in libbpf.

   - New helpers to implement synproxy with eBPF/XDP.

   - Improve loop performances, inlining indirect calls when possible.

   - Removed all the deprecated libbpf APIs.

   - Implement new eBPF-based LSM flavor.

   - Add type match support, which allow accurate queries to the eBPF
     used types.

   - A few TCP congetsion control framework usability improvements.

   - Add new infrastructure to manipulate CT entries via eBPF programs.

   - Allow for livepatch (KLP) and BPF trampolines to attach to the same
     kernel function.

  Protocols:

   - Introduce per network namespace lookup tables for unix sockets,
     increasing scalability and reducing contention.

   - Preparation work for Wi-Fi 7 Multi-Link Operation (MLO) support.

   - Add support to forciby close TIME_WAIT TCP sockets via user-space
     tools.

   - Significant performance improvement for the TLS 1.3 receive path,
     both for zero-copy and not-zero-copy.

   - Support for changing the initial MTPCP subflow priority/backup
     status

   - Introduce virtually contingus buffers for sockets over RDMA, to
     cope better with memory pressure.

   - Extend CAN ethtool support with timestamping capabilities

   - Refactor CAN build infrastructure to allow building only the needed
     features.

  Driver API:

   - Remove devlink mutex to allow parallel commands on multiple links.

   - Add support for pause stats in distributed switch.

   - Implement devlink helpers to query and flash line cards.

   - New helper for phy mode to register conversion.

  New hardware / drivers:

   - Ethernet DSA driver for the rockchip mt7531 on BPI-R2 Pro.

   - Ethernet DSA driver for the Renesas RZ/N1 A5PSW switch.

   - Ethernet DSA driver for the Microchip LAN937x switch.

   - Ethernet PHY driver for the Aquantia AQR113C EPHY.

   - CAN driver for the OBD-II ELM327 interface.

   - CAN driver for RZ/N1 SJA1000 CAN controller.

   - Bluetooth: Infineon CYW55572 Wi-Fi plus Bluetooth combo device.

  Drivers:

   - Intel Ethernet NICs:
      - i40e: add support for vlan pruning
      - i40e: add support for XDP framented packets
      - ice: improved vlan offload support
      - ice: add support for PPPoE offload

   - Mellanox Ethernet (mlx5)
      - refactor packet steering offload for performance and scalability
      - extend support for TC offload
      - refactor devlink code to clean-up the locking schema
      - support stacked vlans for bridge offloads
      - use TLS objects pool to improve connection rate

   - Netronome Ethernet NICs (nfp):
      - extend support for IPv6 fields mangling offload
      - add support for vepa mode in HW bridge
      - better support for virtio data path acceleration (VDPA)
      - enable TSO by default

   - Microsoft vNIC driver (mana)
      - add support for XDP redirect

   - Others Ethernet drivers:
      - bonding: add per-port priority support
      - microchip lan743x: extend phy support
      - Fungible funeth: support UDP segmentation offload and XDP xmit
      - Solarflare EF100: add support for virtual function representors
      - MediaTek SoC: add XDP support

   - Mellanox Ethernet/IB switch (mlxsw):
      - dropped support for unreleased H/W (XM router).
      - improved stats accuracy
      - unified bridge model coversion improving scalability (parts 1-6)
      - support for PTP in Spectrum-2 asics

   - Broadcom PHYs
      - add PTP support for BCM54210E
      - add support for the BCM53128 internal PHY

   - Marvell Ethernet switches (prestera):
      - implement support for multicast forwarding offload

   - Embedded Ethernet switches:
      - refactor OcteonTx MAC filter for better scalability
      - improve TC H/W offload for the Felix driver
      - refactor the Microchip ksz8 and ksz9477 drivers to share the
        probe code (parts 1, 2), add support for phylink mac
        configuration

   - Other WiFi:
      - Microchip wilc1000: diable WEP support and enable WPA3
      - Atheros ath10k: encapsulation offload support

  Old code removal:

   - Neterion vxge ethernet driver: this is untouched since more than 10 years"

* tag 'net-next-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1890 commits)
  doc: sfp-phylink: Fix a broken reference
  wireguard: selftests: support UML
  wireguard: allowedips: don't corrupt stack when detecting overflow
  wireguard: selftests: update config fragments
  wireguard: ratelimiter: use hrtimer in selftest
  net/mlx5e: xsk: Discard unaligned XSK frames on striding RQ
  net: usb: ax88179_178a: Bind only to vendor-specific interface
  selftests: net: fix IOAM test skip return code
  net: usb: make USB_RTL8153_ECM non user configurable
  net: marvell: prestera: remove reduntant code
  octeontx2-pf: Reduce minimum mtu size to 60
  net: devlink: Fix missing mutex_unlock() call
  net/tls: Remove redundant workqueue flush before destroy
  net: txgbe: Fix an error handling path in txgbe_probe()
  net: dsa: Fix spelling mistakes and cleanup code
  Documentation: devlink: add add devlink-selftests to the table of contents
  dccp: put dccp_qpolicy_full() and dccp_qpolicy_push() in the same lock
  net: ionic: fix error check for vlan flags in ionic_set_nic_features()
  net: ice: fix error NETIF_F_HW_VLAN_CTAG_FILTER check in ice_vsi_sync_fltr()
  nfp: flower: add support for tunnel offload without key ID
  ...

1 files changed, 237 insertions, 0 deletions

diff --git a/drivers/net/dsa/microchip/ksz_spi.c b/drivers/net/dsa/microchip/ksz_spi.c
new file mode 100644
index 000000000000..05bd089795f8
--- /dev/null
+++ b/drivers/net/dsa/microchip/ksz_spi.c
@@ -0,0 +1,237 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Microchip ksz series register access through SPI
+ *
+ * Copyright (C) 2017 Microchip Technology Inc.
+ *	Tristram Ha <Tristram.Ha@microchip.com>
+ */
+
+#include <asm/unaligned.h>
+
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/spi/spi.h>
+
+#include "ksz_common.h"
+
+#define KSZ8795_SPI_ADDR_SHIFT			12
+#define KSZ8795_SPI_ADDR_ALIGN			3
+#define KSZ8795_SPI_TURNAROUND_SHIFT		1
+
+#define KSZ8863_SPI_ADDR_SHIFT			8
+#define KSZ8863_SPI_ADDR_ALIGN			8
+#define KSZ8863_SPI_TURNAROUND_SHIFT		0
+
+#define KSZ9477_SPI_ADDR_SHIFT			24
+#define KSZ9477_SPI_ADDR_ALIGN			3
+#define KSZ9477_SPI_TURNAROUND_SHIFT		5
+
+KSZ_REGMAP_TABLE(ksz8795, 16, KSZ8795_SPI_ADDR_SHIFT,
+		 KSZ8795_SPI_TURNAROUND_SHIFT, KSZ8795_SPI_ADDR_ALIGN);
+
+KSZ_REGMAP_TABLE(ksz8863, 16, KSZ8863_SPI_ADDR_SHIFT,
+		 KSZ8863_SPI_TURNAROUND_SHIFT, KSZ8863_SPI_ADDR_ALIGN);
+
+KSZ_REGMAP_TABLE(ksz9477, 32, KSZ9477_SPI_ADDR_SHIFT,
+		 KSZ9477_SPI_TURNAROUND_SHIFT, KSZ9477_SPI_ADDR_ALIGN);
+
+static int ksz_spi_probe(struct spi_device *spi)
+{
+	const struct regmap_config *regmap_config;
+	const struct ksz_chip_data *chip;
+	struct device *ddev = &spi->dev;
+	struct regmap_config rc;
+	struct ksz_device *dev;
+	int i, ret = 0;
+
+	dev = ksz_switch_alloc(&spi->dev, spi);
+	if (!dev)
+		return -ENOMEM;
+
+	chip = device_get_match_data(ddev);
+	if (!chip)
+		return -EINVAL;
+
+	if (chip->chip_id == KSZ8830_CHIP_ID)
+		regmap_config = ksz8863_regmap_config;
+	else if (chip->chip_id == KSZ8795_CHIP_ID ||
+		 chip->chip_id == KSZ8794_CHIP_ID ||
+		 chip->chip_id == KSZ8765_CHIP_ID)
+		regmap_config = ksz8795_regmap_config;
+	else
+		regmap_config = ksz9477_regmap_config;
+
+	for (i = 0; i < ARRAY_SIZE(ksz8795_regmap_config); i++) {
+		rc = regmap_config[i];
+		rc.lock_arg = &dev->regmap_mutex;
+		dev->regmap[i] = devm_regmap_init_spi(spi, &rc);
+		if (IS_ERR(dev->regmap[i])) {
+			ret = PTR_ERR(dev->regmap[i]);
+			dev_err(&spi->dev,
+				"Failed to initialize regmap%i: %d\n",
+				regmap_config[i].val_bits, ret);
+			return ret;
+		}
+	}
+
+	if (spi->dev.platform_data)
+		dev->pdata = spi->dev.platform_data;
+
+	/* setup spi */
+	spi->mode = SPI_MODE_3;
+	ret = spi_setup(spi);
+	if (ret)
+		return ret;
+
+	ret = ksz_switch_register(dev);
+
+	/* Main DSA driver may not be started yet. */
+	if (ret)
+		return ret;
+
+	spi_set_drvdata(spi, dev);
+
+	return 0;
+}
+
+static void ksz_spi_remove(struct spi_device *spi)
+{
+	struct ksz_device *dev = spi_get_drvdata(spi);
+
+	if (dev)
+		ksz_switch_remove(dev);
+
+	spi_set_drvdata(spi, NULL);
+}
+
+static void ksz_spi_shutdown(struct spi_device *spi)
+{
+	struct ksz_device *dev = spi_get_drvdata(spi);
+
+	if (!dev)
+		return;
+
+	if (dev->dev_ops->reset)
+		dev->dev_ops->reset(dev);
+
+	dsa_switch_shutdown(dev->ds);
+
+	spi_set_drvdata(spi, NULL);
+}
+
+static const struct of_device_id ksz_dt_ids[] = {
+	{
+		.compatible = "microchip,ksz8765",
+		.data = &ksz_switch_chips[KSZ8765]
+	},
+	{
+		.compatible = "microchip,ksz8794",
+		.data = &ksz_switch_chips[KSZ8794]
+	},
+	{
+		.compatible = "microchip,ksz8795",
+		.data = &ksz_switch_chips[KSZ8795]
+	},
+	{
+		.compatible = "microchip,ksz8863",
+		.data = &ksz_switch_chips[KSZ8830]
+	},
+	{
+		.compatible = "microchip,ksz8873",
+		.data = &ksz_switch_chips[KSZ8830]
+	},
+	{
+		.compatible = "microchip,ksz9477",
+		.data = &ksz_switch_chips[KSZ9477]
+	},
+	{
+		.compatible = "microchip,ksz9897",
+		.data = &ksz_switch_chips[KSZ9897]
+	},
+	{
+		.compatible = "microchip,ksz9893",
+		.data = &ksz_switch_chips[KSZ9893]
+	},
+	{
+		.compatible = "microchip,ksz9563",
+		.data = &ksz_switch_chips[KSZ9893]
+	},
+	{
+		.compatible = "microchip,ksz8563",
+		.data = &ksz_switch_chips[KSZ9893]
+	},
+	{
+		.compatible = "microchip,ksz9567",
+		.data = &ksz_switch_chips[KSZ9567]
+	},
+	{
+		.compatible = "microchip,lan9370",
+		.data = &ksz_switch_chips[LAN9370]
+	},
+	{
+		.compatible = "microchip,lan9371",
+		.data = &ksz_switch_chips[LAN9371]
+	},
+	{
+		.compatible = "microchip,lan9372",
+		.data = &ksz_switch_chips[LAN9372]
+	},
+	{
+		.compatible = "microchip,lan9373",
+		.data = &ksz_switch_chips[LAN9373]
+	},
+	{
+		.compatible = "microchip,lan9374",
+		.data = &ksz_switch_chips[LAN9374]
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, ksz_dt_ids);
+
+static const struct spi_device_id ksz_spi_ids[] = {
+	{ "ksz8765" },
+	{ "ksz8794" },
+	{ "ksz8795" },
+	{ "ksz8863" },
+	{ "ksz8873" },
+	{ "ksz9477" },
+	{ "ksz9897" },
+	{ "ksz9893" },
+	{ "ksz9563" },
+	{ "ksz8563" },
+	{ "ksz9567" },
+	{ "lan9370" },
+	{ "lan9371" },
+	{ "lan9372" },
+	{ "lan9373" },
+	{ "lan9374" },
+	{ },
+};
+MODULE_DEVICE_TABLE(spi, ksz_spi_ids);
+
+static struct spi_driver ksz_spi_driver = {
+	.driver = {
+		.name	= "ksz-switch",
+		.owner	= THIS_MODULE,
+		.of_match_table = ksz_dt_ids,
+	},
+	.id_table = ksz_spi_ids,
+	.probe	= ksz_spi_probe,
+	.remove	= ksz_spi_remove,
+	.shutdown = ksz_spi_shutdown,
+};
+
+module_spi_driver(ksz_spi_driver);
+
+MODULE_ALIAS("spi:ksz9477");
+MODULE_ALIAS("spi:ksz9897");
+MODULE_ALIAS("spi:ksz9893");
+MODULE_ALIAS("spi:ksz9563");
+MODULE_ALIAS("spi:ksz8563");
+MODULE_ALIAS("spi:ksz9567");
+MODULE_ALIAS("spi:lan937x");
+MODULE_AUTHOR("Tristram Ha <Tristram.Ha@microchip.com>");
+MODULE_DESCRIPTION("Microchip ksz Series Switch SPI Driver");
+MODULE_LICENSE("GPL");