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, 251 insertions, 0 deletions

diff --git a/drivers/net/ethernet/amd/7990.h b/drivers/net/ethernet/amd/7990.h
new file mode 100644
index 000000000..e53551dae
--- /dev/null
+++ b/drivers/net/ethernet/amd/7990.h
@@ -0,0 +1,251 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * 7990.h -- LANCE ethernet IC generic routines.
+ * This is an attempt to separate out the bits of various ethernet
+ * drivers that are common because they all use the AMD 7990 LANCE
+ * (Local Area Network Controller for Ethernet) chip.
+ *
+ * Copyright (C) 05/1998 Peter Maydell <pmaydell@chiark.greenend.org.uk>
+ *
+ * Most of this stuff was obtained by looking at other LANCE drivers,
+ * in particular a2065.[ch]. The AMD C-LANCE datasheet was also helpful.
+ */
+
+#ifndef _7990_H
+#define _7990_H
+
+/* The lance only has two register locations. We communicate mostly via memory. */
+#define LANCE_RDP	0	/* Register Data Port */
+#define LANCE_RAP	2	/* Register Address Port */
+
+/* Transmit/receive ring definitions.
+ * We allow the specific drivers to override these defaults if they want to.
+ * NB: according to lance.c, increasing the number of buffers is a waste
+ * of space and reduces the chance that an upper layer will be able to
+ * reorder queued Tx packets based on priority. [Clearly there is a minimum
+ * limit too: too small and we drop rx packets and can't tx at full speed.]
+ * 4+4 seems to be the usual setting; the atarilance driver uses 3 and 5.
+ */
+
+/* Blast! This won't work. The problem is that we can't specify a default
+ * setting because that would cause the lance_init_block struct to be
+ * too long (and overflow the RAM on shared-memory cards like the HP LANCE.
+ */
+#ifndef LANCE_LOG_TX_BUFFERS
+#define LANCE_LOG_TX_BUFFERS 1
+#define LANCE_LOG_RX_BUFFERS 3
+#endif
+
+#define TX_RING_SIZE		(1 << LANCE_LOG_TX_BUFFERS)
+#define RX_RING_SIZE		(1 << LANCE_LOG_RX_BUFFERS)
+#define TX_RING_MOD_MASK	(TX_RING_SIZE - 1)
+#define RX_RING_MOD_MASK	(RX_RING_SIZE - 1)
+#define TX_RING_LEN_BITS	((LANCE_LOG_TX_BUFFERS) << 29)
+#define RX_RING_LEN_BITS	((LANCE_LOG_RX_BUFFERS) << 29)
+#define PKT_BUFF_SIZE		(1544)
+#define RX_BUFF_SIZE		PKT_BUFF_SIZE
+#define TX_BUFF_SIZE		PKT_BUFF_SIZE
+
+/* Each receive buffer is described by a receive message descriptor (RMD) */
+struct lance_rx_desc {
+	volatile unsigned short rmd0;	    /* low address of packet */
+	volatile unsigned char  rmd1_bits;  /* descriptor bits */
+	volatile unsigned char  rmd1_hadr;  /* high address of packet */
+	volatile short    length;	    /* This length is 2s complement (negative)!
+					     * Buffer length */
+	volatile unsigned short mblength;   /* Actual number of bytes received */
+};
+
+/* Ditto for TMD: */
+struct lance_tx_desc {
+	volatile unsigned short tmd0;	    /* low address of packet */
+	volatile unsigned char  tmd1_bits;  /* descriptor bits */
+	volatile unsigned char  tmd1_hadr;  /* high address of packet */
+	volatile short    length;	    /* Length is 2s complement (negative)! */
+	volatile unsigned short misc;
+};
+
+/* There are three memory structures accessed by the LANCE:
+ * the initialization block, the receive and transmit descriptor rings,
+ * and the data buffers themselves. In fact we might as well put the
+ * init block,the Tx and Rx rings and the buffers together in memory:
+ */
+struct lance_init_block {
+	volatile unsigned short mode;		/* Pre-set mode (reg. 15) */
+	volatile unsigned char phys_addr[6];	/* Physical ethernet address */
+	volatile unsigned filter[2];		/* Multicast filter (64 bits) */
+
+	/* Receive and transmit ring base, along with extra bits. */
+	volatile unsigned short rx_ptr;		/* receive descriptor addr */
+	volatile unsigned short rx_len;		/* receive len and high addr */
+	volatile unsigned short tx_ptr;		/* transmit descriptor addr */
+	volatile unsigned short tx_len;		/* transmit len and high addr */
+
+	/* The Tx and Rx ring entries must be aligned on 8-byte boundaries.
+	 * This will be true if this whole struct is 8-byte aligned.
+	 */
+	volatile struct lance_tx_desc btx_ring[TX_RING_SIZE];
+	volatile struct lance_rx_desc brx_ring[RX_RING_SIZE];
+
+	volatile char tx_buf[TX_RING_SIZE][TX_BUFF_SIZE];
+	volatile char rx_buf[RX_RING_SIZE][RX_BUFF_SIZE];
+	/* we use this just to make the struct big enough that we can move its startaddr
+	 * in order to force alignment to an eight byte boundary.
+	 */
+};
+
+/* This is where we keep all the stuff the driver needs to know about.
+ * I'm definitely unhappy about the mechanism for allowing specific
+ * drivers to add things...
+ */
+struct lance_private {
+	const char *name;
+	unsigned long base;
+	volatile struct lance_init_block *init_block; /* CPU address of RAM */
+	volatile struct lance_init_block *lance_init_block; /* LANCE address of RAM */
+
+	int rx_new, tx_new;
+	int rx_old, tx_old;
+
+	int lance_log_rx_bufs, lance_log_tx_bufs;
+	int rx_ring_mod_mask, tx_ring_mod_mask;
+
+	int tpe;			/* TPE is selected */
+	int auto_select;		/* cable-selection is by carrier */
+	unsigned short busmaster_regval;
+
+	unsigned int irq;		/* IRQ to register */
+
+	/* This is because the HP LANCE is disgusting and you have to check
+	 * a DIO-specific register every time you read/write the LANCE regs :-<
+	 * [could we get away with making these some sort of macro?]
+	 */
+	void (*writerap)(void *, unsigned short);
+	void (*writerdp)(void *, unsigned short);
+	unsigned short (*readrdp)(void *);
+	spinlock_t devlock;
+	char tx_full;
+};
+
+/*
+ *		Am7990 Control and Status Registers
+ */
+#define LE_CSR0		0x0000	/* LANCE Controller Status */
+#define LE_CSR1		0x0001	/* IADR[15:0] (bit0==0 ie word aligned) */
+#define LE_CSR2		0x0002	/* IADR[23:16] (high bits reserved) */
+#define LE_CSR3		0x0003	/* Misc */
+
+/*
+ *		Bit definitions for CSR0 (LANCE Controller Status)
+ */
+#define LE_C0_ERR	0x8000	/* Error = BABL | CERR | MISS | MERR */
+#define LE_C0_BABL	0x4000	/* Babble: Transmitted too many bits */
+#define LE_C0_CERR	0x2000	/* No Heartbeat (10BASE-T) */
+#define LE_C0_MISS	0x1000	/* Missed Frame (no rx buffer to put it in) */
+#define LE_C0_MERR	0x0800	/* Memory Error */
+#define LE_C0_RINT	0x0400	/* Receive Interrupt */
+#define LE_C0_TINT	0x0200	/* Transmit Interrupt */
+#define LE_C0_IDON	0x0100	/* Initialization Done */
+#define LE_C0_INTR	0x0080	/* Interrupt Flag
+				   = BABL | MISS | MERR | RINT | TINT | IDON */
+#define LE_C0_INEA	0x0040	/* Interrupt Enable */
+#define LE_C0_RXON	0x0020	/* Receive On */
+#define LE_C0_TXON	0x0010	/* Transmit On */
+#define LE_C0_TDMD	0x0008	/* Transmit Demand */
+#define LE_C0_STOP	0x0004	/* Stop */
+#define LE_C0_STRT	0x0002	/* Start */
+#define LE_C0_INIT	0x0001	/* Initialize */
+
+
+/*
+ *		Bit definitions for CSR3
+ */
+#define LE_C3_BSWP	0x0004	/* Byte Swap (on for big endian byte order) */
+#define LE_C3_ACON	0x0002	/* ALE Control (on for active low ALE) */
+#define LE_C3_BCON	0x0001	/* Byte Control */
+
+
+/*
+ *		Mode Flags
+ */
+#define LE_MO_PROM	0x8000	/* Promiscuous Mode */
+/* these next ones 0x4000 -- 0x0080 are not available on the LANCE 7990,
+ * but they are in NetBSD's am7990.h, presumably for backwards-compatible chips
+ */
+#define LE_MO_DRCVBC	0x4000	/* disable receive broadcast */
+#define LE_MO_DRCVPA	0x2000	/* disable physical address detection */
+#define LE_MO_DLNKTST	0x1000	/* disable link status */
+#define LE_MO_DAPC	0x0800	/* disable automatic polarity correction */
+#define LE_MO_MENDECL	0x0400	/* MENDEC loopback mode */
+#define LE_MO_LRTTSEL	0x0200	/* lower RX threshold / TX mode selection */
+#define LE_MO_PSEL1	0x0100	/* port selection bit1 */
+#define LE_MO_PSEL0	0x0080	/* port selection bit0 */
+/* and this one is from the C-LANCE data sheet... */
+#define LE_MO_EMBA	0x0080	/* Enable Modified Backoff Algorithm
+				   (C-LANCE, not original LANCE) */
+#define LE_MO_INTL	0x0040	/* Internal Loopback */
+#define LE_MO_DRTY	0x0020	/* Disable Retry */
+#define LE_MO_FCOLL	0x0010	/* Force Collision */
+#define LE_MO_DXMTFCS	0x0008	/* Disable Transmit CRC */
+#define LE_MO_LOOP	0x0004	/* Loopback Enable */
+#define LE_MO_DTX	0x0002	/* Disable Transmitter */
+#define LE_MO_DRX	0x0001	/* Disable Receiver */
+
+
+/*
+ *		Receive Flags
+ */
+#define LE_R1_OWN	0x80	/* LANCE owns the descriptor */
+#define LE_R1_ERR	0x40	/* Error */
+#define LE_R1_FRA	0x20	/* Framing Error */
+#define LE_R1_OFL	0x10	/* Overflow Error */
+#define LE_R1_CRC	0x08	/* CRC Error */
+#define LE_R1_BUF	0x04	/* Buffer Error */
+#define LE_R1_SOP	0x02	/* Start of Packet */
+#define LE_R1_EOP	0x01	/* End of Packet */
+#define LE_R1_POK	0x03	/* Packet is complete: SOP + EOP */
+
+
+/*
+ *		Transmit Flags
+ */
+#define LE_T1_OWN	0x80	/* LANCE owns the descriptor */
+#define LE_T1_ERR	0x40	/* Error */
+#define LE_T1_RES	0x20	/* Reserved, LANCE writes this with a zero */
+#define LE_T1_EMORE	0x10	/* More than one retry needed */
+#define LE_T1_EONE	0x08	/* One retry needed */
+#define LE_T1_EDEF	0x04	/* Deferred */
+#define LE_T1_SOP	0x02	/* Start of Packet */
+#define LE_T1_EOP	0x01	/* End of Packet */
+#define LE_T1_POK	0x03	/* Packet is complete: SOP + EOP */
+
+/*
+ *		Error Flags
+ */
+#define LE_T3_BUF	0x8000	/* Buffer Error */
+#define LE_T3_UFL	0x4000	/* Underflow Error */
+#define LE_T3_LCOL	0x1000	/* Late Collision */
+#define LE_T3_CLOS	0x0800	/* Loss of Carrier */
+#define LE_T3_RTY	0x0400	/* Retry Error */
+#define LE_T3_TDR	0x03ff	/* Time Domain Reflectometry */
+
+/* Miscellaneous useful macros */
+
+#define TX_BUFFS_AVAIL ((lp->tx_old <= lp->tx_new) ? \
+			lp->tx_old + lp->tx_ring_mod_mask - lp->tx_new : \
+			lp->tx_old - lp->tx_new - 1)
+
+/* The LANCE only uses 24 bit addresses. This does the obvious thing. */
+#define LANCE_ADDR(x) ((int)(x) & ~0xff000000)
+
+/* Now the prototypes we export */
+int lance_open(struct net_device *dev);
+int lance_close(struct net_device *dev);
+netdev_tx_t lance_start_xmit(struct sk_buff *skb, struct net_device *dev);
+void lance_set_multicast(struct net_device *dev);
+void lance_tx_timeout(struct net_device *dev, unsigned int txqueue);
+#ifdef CONFIG_NET_POLL_CONTROLLER
+void lance_poll(struct net_device *dev);
+#endif
+
+#endif /* ndef _7990_H */