Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 220 insertions, 0 deletions

diff --git a/drivers/net/ethernet/dnet.h b/drivers/net/ethernet/dnet.h
new file mode 100644
index 000000000..030724484
--- /dev/null
+++ b/drivers/net/ethernet/dnet.h
@@ -0,0 +1,220 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Dave DNET Ethernet Controller driver
+ *
+ * Copyright (C) 2008 Dave S.r.l. <www.dave.eu>
+ */
+#ifndef _DNET_H
+#define _DNET_H
+
+#define DRV_NAME		"dnet"
+#define PFX				DRV_NAME ": "
+
+/* Register access macros */
+#define dnet_writel(port, value, reg)	\
+	writel((value), (port)->regs + DNET_##reg)
+#define dnet_readl(port, reg)	readl((port)->regs + DNET_##reg)
+
+/* ALL DNET FIFO REGISTERS */
+#define DNET_RX_LEN_FIFO		0x000	/* RX_LEN_FIFO */
+#define DNET_RX_DATA_FIFO		0x004	/* RX_DATA_FIFO */
+#define DNET_TX_LEN_FIFO		0x008	/* TX_LEN_FIFO */
+#define DNET_TX_DATA_FIFO		0x00C	/* TX_DATA_FIFO */
+
+/* ALL DNET CONTROL/STATUS REGISTERS OFFSETS */
+#define DNET_VERCAPS			0x100	/* VERCAPS */
+#define DNET_INTR_SRC			0x104	/* INTR_SRC */
+#define DNET_INTR_ENB			0x108	/* INTR_ENB */
+#define DNET_RX_STATUS			0x10C	/* RX_STATUS */
+#define DNET_TX_STATUS			0x110	/* TX_STATUS */
+#define DNET_RX_FRAMES_CNT		0x114	/* RX_FRAMES_CNT */
+#define DNET_TX_FRAMES_CNT		0x118	/* TX_FRAMES_CNT */
+#define DNET_RX_FIFO_TH			0x11C	/* RX_FIFO_TH */
+#define DNET_TX_FIFO_TH			0x120	/* TX_FIFO_TH */
+#define DNET_SYS_CTL			0x124	/* SYS_CTL */
+#define DNET_PAUSE_TMR			0x128	/* PAUSE_TMR */
+#define DNET_RX_FIFO_WCNT		0x12C	/* RX_FIFO_WCNT */
+#define DNET_TX_FIFO_WCNT		0x130	/* TX_FIFO_WCNT */
+
+/* ALL DNET MAC REGISTERS */
+#define DNET_MACREG_DATA		0x200	/* Mac-Reg Data */
+#define DNET_MACREG_ADDR		0x204	/* Mac-Reg Addr  */
+
+/* ALL DNET RX STATISTICS COUNTERS  */
+#define DNET_RX_PKT_IGNR_CNT		0x300
+#define DNET_RX_LEN_CHK_ERR_CNT		0x304
+#define DNET_RX_LNG_FRM_CNT		0x308
+#define DNET_RX_SHRT_FRM_CNT		0x30C
+#define DNET_RX_IPG_VIOL_CNT		0x310
+#define DNET_RX_CRC_ERR_CNT		0x314
+#define DNET_RX_OK_PKT_CNT		0x318
+#define DNET_RX_CTL_FRM_CNT		0x31C
+#define DNET_RX_PAUSE_FRM_CNT		0x320
+#define DNET_RX_MULTICAST_CNT		0x324
+#define DNET_RX_BROADCAST_CNT		0x328
+#define DNET_RX_VLAN_TAG_CNT		0x32C
+#define DNET_RX_PRE_SHRINK_CNT		0x330
+#define DNET_RX_DRIB_NIB_CNT		0x334
+#define DNET_RX_UNSUP_OPCD_CNT		0x338
+#define DNET_RX_BYTE_CNT		0x33C
+
+/* DNET TX STATISTICS COUNTERS */
+#define DNET_TX_UNICAST_CNT		0x400
+#define DNET_TX_PAUSE_FRM_CNT		0x404
+#define DNET_TX_MULTICAST_CNT		0x408
+#define DNET_TX_BRDCAST_CNT		0x40C
+#define DNET_TX_VLAN_TAG_CNT		0x410
+#define DNET_TX_BAD_FCS_CNT		0x414
+#define DNET_TX_JUMBO_CNT		0x418
+#define DNET_TX_BYTE_CNT		0x41C
+
+/* SOME INTERNAL MAC-CORE REGISTER */
+#define DNET_INTERNAL_MODE_REG		0x0
+#define DNET_INTERNAL_RXTX_CONTROL_REG	0x2
+#define DNET_INTERNAL_MAX_PKT_SIZE_REG	0x4
+#define DNET_INTERNAL_IGP_REG		0x8
+#define DNET_INTERNAL_MAC_ADDR_0_REG	0xa
+#define DNET_INTERNAL_MAC_ADDR_1_REG	0xc
+#define DNET_INTERNAL_MAC_ADDR_2_REG	0xe
+#define DNET_INTERNAL_TX_RX_STS_REG	0x12
+#define DNET_INTERNAL_GMII_MNG_CTL_REG	0x14
+#define DNET_INTERNAL_GMII_MNG_DAT_REG	0x16
+
+#define DNET_INTERNAL_GMII_MNG_CMD_FIN	(1 << 14)
+
+#define DNET_INTERNAL_WRITE		(1 << 31)
+
+/* MAC-CORE REGISTER FIELDS */
+
+/* MAC-CORE MODE REGISTER FIELDS */
+#define DNET_INTERNAL_MODE_GBITEN			(1 << 0)
+#define DNET_INTERNAL_MODE_FCEN				(1 << 1)
+#define DNET_INTERNAL_MODE_RXEN				(1 << 2)
+#define DNET_INTERNAL_MODE_TXEN				(1 << 3)
+
+/* MAC-CORE RXTX CONTROL REGISTER FIELDS */
+#define DNET_INTERNAL_RXTX_CONTROL_RXSHORTFRAME		(1 << 8)
+#define DNET_INTERNAL_RXTX_CONTROL_RXBROADCAST		(1 << 7)
+#define DNET_INTERNAL_RXTX_CONTROL_RXMULTICAST		(1 << 4)
+#define DNET_INTERNAL_RXTX_CONTROL_RXPAUSE		(1 << 3)
+#define DNET_INTERNAL_RXTX_CONTROL_DISTXFCS		(1 << 2)
+#define DNET_INTERNAL_RXTX_CONTROL_DISCFXFCS		(1 << 1)
+#define DNET_INTERNAL_RXTX_CONTROL_ENPROMISC		(1 << 0)
+#define DNET_INTERNAL_RXTX_CONTROL_DROPCONTROL		(1 << 6)
+#define DNET_INTERNAL_RXTX_CONTROL_ENABLEHALFDUP	(1 << 5)
+
+/* SYSTEM CONTROL REGISTER FIELDS */
+#define DNET_SYS_CTL_IGNORENEXTPKT			(1 << 0)
+#define DNET_SYS_CTL_SENDPAUSE				(1 << 2)
+#define DNET_SYS_CTL_RXFIFOFLUSH			(1 << 3)
+#define DNET_SYS_CTL_TXFIFOFLUSH			(1 << 4)
+
+/* TX STATUS REGISTER FIELDS */
+#define DNET_TX_STATUS_FIFO_ALMOST_EMPTY		(1 << 2)
+#define DNET_TX_STATUS_FIFO_ALMOST_FULL			(1 << 1)
+
+/* INTERRUPT SOURCE REGISTER FIELDS */
+#define DNET_INTR_SRC_TX_PKTSENT			(1 << 0)
+#define DNET_INTR_SRC_TX_FIFOAF				(1 << 1)
+#define DNET_INTR_SRC_TX_FIFOAE				(1 << 2)
+#define DNET_INTR_SRC_TX_DISCFRM			(1 << 3)
+#define DNET_INTR_SRC_TX_FIFOFULL			(1 << 4)
+#define DNET_INTR_SRC_RX_CMDFIFOAF			(1 << 8)
+#define DNET_INTR_SRC_RX_CMDFIFOFF			(1 << 9)
+#define DNET_INTR_SRC_RX_DATAFIFOFF			(1 << 10)
+#define DNET_INTR_SRC_TX_SUMMARY			(1 << 16)
+#define DNET_INTR_SRC_RX_SUMMARY			(1 << 17)
+#define DNET_INTR_SRC_PHY				(1 << 19)
+
+/* INTERRUPT ENABLE REGISTER FIELDS */
+#define DNET_INTR_ENB_TX_PKTSENT			(1 << 0)
+#define DNET_INTR_ENB_TX_FIFOAF				(1 << 1)
+#define DNET_INTR_ENB_TX_FIFOAE				(1 << 2)
+#define DNET_INTR_ENB_TX_DISCFRM			(1 << 3)
+#define DNET_INTR_ENB_TX_FIFOFULL			(1 << 4)
+#define DNET_INTR_ENB_RX_PKTRDY				(1 << 8)
+#define DNET_INTR_ENB_RX_FIFOAF				(1 << 9)
+#define DNET_INTR_ENB_RX_FIFOERR			(1 << 10)
+#define DNET_INTR_ENB_RX_ERROR				(1 << 11)
+#define DNET_INTR_ENB_RX_FIFOFULL			(1 << 12)
+#define DNET_INTR_ENB_RX_FIFOAE				(1 << 13)
+#define DNET_INTR_ENB_TX_SUMMARY			(1 << 16)
+#define DNET_INTR_ENB_RX_SUMMARY			(1 << 17)
+#define DNET_INTR_ENB_GLOBAL_ENABLE			(1 << 18)
+
+/* default values:
+ * almost empty = less than one full sized ethernet frame (no jumbo) inside
+ * the fifo almost full = can write less than one full sized ethernet frame
+ * (no jumbo) inside the fifo
+ */
+#define DNET_CFG_TX_FIFO_FULL_THRES	25
+#define DNET_CFG_RX_FIFO_FULL_THRES	20
+
+/*
+ * Capabilities. Used by the driver to know the capabilities that the ethernet
+ * controller inside the FPGA have.
+ */
+
+#define DNET_HAS_MDIO		(1 << 0)
+#define DNET_HAS_IRQ		(1 << 1)
+#define DNET_HAS_GIGABIT	(1 << 2)
+#define DNET_HAS_DMA		(1 << 3)
+
+#define DNET_HAS_MII		(1 << 4) /* or GMII */
+#define DNET_HAS_RMII		(1 << 5) /* or RGMII */
+
+#define DNET_CAPS_MASK		0xFFFF
+
+#define DNET_FIFO_SIZE		1024 /* 1K x 32 bit */
+#define DNET_FIFO_TX_DATA_AF_TH	(DNET_FIFO_SIZE - 384) /* 384 = 1536 / 4 */
+#define DNET_FIFO_TX_DATA_AE_TH	384
+
+#define DNET_FIFO_RX_CMD_AF_TH	(1 << 16) /* just one frame inside the FIFO */
+
+/*
+ * Hardware-collected statistics.
+ */
+struct dnet_stats {
+	u32 rx_pkt_ignr;
+	u32 rx_len_chk_err;
+	u32 rx_lng_frm;
+	u32 rx_shrt_frm;
+	u32 rx_ipg_viol;
+	u32 rx_crc_err;
+	u32 rx_ok_pkt;
+	u32 rx_ctl_frm;
+	u32 rx_pause_frm;
+	u32 rx_multicast;
+	u32 rx_broadcast;
+	u32 rx_vlan_tag;
+	u32 rx_pre_shrink;
+	u32 rx_drib_nib;
+	u32 rx_unsup_opcd;
+	u32 rx_byte;
+	u32 tx_unicast;
+	u32 tx_pause_frm;
+	u32 tx_multicast;
+	u32 tx_brdcast;
+	u32 tx_vlan_tag;
+	u32 tx_bad_fcs;
+	u32 tx_jumbo;
+	u32 tx_byte;
+};
+
+struct dnet {
+	void __iomem			*regs;
+	spinlock_t			lock;
+	struct platform_device		*pdev;
+	struct net_device		*dev;
+	struct dnet_stats		hw_stats;
+	unsigned int			capabilities; /* read from FPGA */
+	struct napi_struct		napi;
+
+	/* PHY stuff */
+	struct mii_bus			*mii_bus;
+	unsigned int			link;
+	unsigned int			speed;
+	unsigned int			duplex;
+};
+
+#endif /* _DNET_H */