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, 291 insertions, 0 deletions

diff --git a/arch/sh/kernel/io_trapped.c b/arch/sh/kernel/io_trapped.c
new file mode 100644
index 000000000..e803b14ef
--- /dev/null
+++ b/arch/sh/kernel/io_trapped.c
@@ -0,0 +1,291 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Trapped io support
+ *
+ * Copyright (C) 2008 Magnus Damm
+ *
+ * Intercept io operations by trapping.
+ */
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/bitops.h>
+#include <linux/vmalloc.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <asm/mmu_context.h>
+#include <linux/uaccess.h>
+#include <asm/io.h>
+#include <asm/io_trapped.h>
+
+#define TRAPPED_PAGES_MAX 16
+
+#ifdef CONFIG_HAS_IOPORT_MAP
+LIST_HEAD(trapped_io);
+EXPORT_SYMBOL_GPL(trapped_io);
+#endif
+#ifdef CONFIG_HAS_IOMEM
+LIST_HEAD(trapped_mem);
+EXPORT_SYMBOL_GPL(trapped_mem);
+#endif
+static DEFINE_SPINLOCK(trapped_lock);
+
+static int trapped_io_disable __read_mostly;
+
+static int __init trapped_io_setup(char *__unused)
+{
+	trapped_io_disable = 1;
+	return 1;
+}
+__setup("noiotrap", trapped_io_setup);
+
+int register_trapped_io(struct trapped_io *tiop)
+{
+	struct resource *res;
+	unsigned long len = 0, flags = 0;
+	struct page *pages[TRAPPED_PAGES_MAX];
+	int k, n;
+
+	if (unlikely(trapped_io_disable))
+		return 0;
+
+	/* structure must be page aligned */
+	if ((unsigned long)tiop & (PAGE_SIZE - 1))
+		goto bad;
+
+	for (k = 0; k < tiop->num_resources; k++) {
+		res = tiop->resource + k;
+		len += roundup(resource_size(res), PAGE_SIZE);
+		flags |= res->flags;
+	}
+
+	/* support IORESOURCE_IO _or_ MEM, not both */
+	if (hweight_long(flags) != 1)
+		goto bad;
+
+	n = len >> PAGE_SHIFT;
+
+	if (n >= TRAPPED_PAGES_MAX)
+		goto bad;
+
+	for (k = 0; k < n; k++)
+		pages[k] = virt_to_page(tiop);
+
+	tiop->virt_base = vmap(pages, n, VM_MAP, PAGE_NONE);
+	if (!tiop->virt_base)
+		goto bad;
+
+	len = 0;
+	for (k = 0; k < tiop->num_resources; k++) {
+		res = tiop->resource + k;
+		pr_info("trapped io 0x%08lx overrides %s 0x%08lx\n",
+		       (unsigned long)(tiop->virt_base + len),
+		       res->flags & IORESOURCE_IO ? "io" : "mmio",
+		       (unsigned long)res->start);
+		len += roundup(resource_size(res), PAGE_SIZE);
+	}
+
+	tiop->magic = IO_TRAPPED_MAGIC;
+	INIT_LIST_HEAD(&tiop->list);
+	spin_lock_irq(&trapped_lock);
+#ifdef CONFIG_HAS_IOPORT_MAP
+	if (flags & IORESOURCE_IO)
+		list_add(&tiop->list, &trapped_io);
+#endif
+#ifdef CONFIG_HAS_IOMEM
+	if (flags & IORESOURCE_MEM)
+		list_add(&tiop->list, &trapped_mem);
+#endif
+	spin_unlock_irq(&trapped_lock);
+
+	return 0;
+ bad:
+	pr_warn("unable to install trapped io filter\n");
+	return -1;
+}
+
+void __iomem *match_trapped_io_handler(struct list_head *list,
+				       unsigned long offset,
+				       unsigned long size)
+{
+	unsigned long voffs;
+	struct trapped_io *tiop;
+	struct resource *res;
+	int k, len;
+	unsigned long flags;
+
+	spin_lock_irqsave(&trapped_lock, flags);
+	list_for_each_entry(tiop, list, list) {
+		voffs = 0;
+		for (k = 0; k < tiop->num_resources; k++) {
+			res = tiop->resource + k;
+			if (res->start == offset) {
+				spin_unlock_irqrestore(&trapped_lock, flags);
+				return tiop->virt_base + voffs;
+			}
+
+			len = resource_size(res);
+			voffs += roundup(len, PAGE_SIZE);
+		}
+	}
+	spin_unlock_irqrestore(&trapped_lock, flags);
+	return NULL;
+}
+
+static struct trapped_io *lookup_tiop(unsigned long address)
+{
+	pgd_t *pgd_k;
+	p4d_t *p4d_k;
+	pud_t *pud_k;
+	pmd_t *pmd_k;
+	pte_t *pte_k;
+	pte_t entry;
+
+	pgd_k = swapper_pg_dir + pgd_index(address);
+	if (!pgd_present(*pgd_k))
+		return NULL;
+
+	p4d_k = p4d_offset(pgd_k, address);
+	if (!p4d_present(*p4d_k))
+		return NULL;
+
+	pud_k = pud_offset(p4d_k, address);
+	if (!pud_present(*pud_k))
+		return NULL;
+
+	pmd_k = pmd_offset(pud_k, address);
+	if (!pmd_present(*pmd_k))
+		return NULL;
+
+	pte_k = pte_offset_kernel(pmd_k, address);
+	entry = *pte_k;
+
+	return pfn_to_kaddr(pte_pfn(entry));
+}
+
+static unsigned long lookup_address(struct trapped_io *tiop,
+				    unsigned long address)
+{
+	struct resource *res;
+	unsigned long vaddr = (unsigned long)tiop->virt_base;
+	unsigned long len;
+	int k;
+
+	for (k = 0; k < tiop->num_resources; k++) {
+		res = tiop->resource + k;
+		len = roundup(resource_size(res), PAGE_SIZE);
+		if (address < (vaddr + len))
+			return res->start + (address - vaddr);
+		vaddr += len;
+	}
+	return 0;
+}
+
+static unsigned long long copy_word(unsigned long src_addr, int src_len,
+				    unsigned long dst_addr, int dst_len)
+{
+	unsigned long long tmp = 0;
+
+	switch (src_len) {
+	case 1:
+		tmp = __raw_readb(src_addr);
+		break;
+	case 2:
+		tmp = __raw_readw(src_addr);
+		break;
+	case 4:
+		tmp = __raw_readl(src_addr);
+		break;
+	case 8:
+		tmp = __raw_readq(src_addr);
+		break;
+	}
+
+	switch (dst_len) {
+	case 1:
+		__raw_writeb(tmp, dst_addr);
+		break;
+	case 2:
+		__raw_writew(tmp, dst_addr);
+		break;
+	case 4:
+		__raw_writel(tmp, dst_addr);
+		break;
+	case 8:
+		__raw_writeq(tmp, dst_addr);
+		break;
+	}
+
+	return tmp;
+}
+
+static unsigned long from_device(void *dst, const void *src, unsigned long cnt)
+{
+	struct trapped_io *tiop;
+	unsigned long src_addr = (unsigned long)src;
+	unsigned long long tmp;
+
+	pr_debug("trapped io read 0x%08lx (%ld)\n", src_addr, cnt);
+	tiop = lookup_tiop(src_addr);
+	WARN_ON(!tiop || (tiop->magic != IO_TRAPPED_MAGIC));
+
+	src_addr = lookup_address(tiop, src_addr);
+	if (!src_addr)
+		return cnt;
+
+	tmp = copy_word(src_addr,
+			max_t(unsigned long, cnt,
+			      (tiop->minimum_bus_width / 8)),
+			(unsigned long)dst, cnt);
+
+	pr_debug("trapped io read 0x%08lx -> 0x%08llx\n", src_addr, tmp);
+	return 0;
+}
+
+static unsigned long to_device(void *dst, const void *src, unsigned long cnt)
+{
+	struct trapped_io *tiop;
+	unsigned long dst_addr = (unsigned long)dst;
+	unsigned long long tmp;
+
+	pr_debug("trapped io write 0x%08lx (%ld)\n", dst_addr, cnt);
+	tiop = lookup_tiop(dst_addr);
+	WARN_ON(!tiop || (tiop->magic != IO_TRAPPED_MAGIC));
+
+	dst_addr = lookup_address(tiop, dst_addr);
+	if (!dst_addr)
+		return cnt;
+
+	tmp = copy_word((unsigned long)src, cnt,
+			dst_addr, max_t(unsigned long, cnt,
+					(tiop->minimum_bus_width / 8)));
+
+	pr_debug("trapped io write 0x%08lx -> 0x%08llx\n", dst_addr, tmp);
+	return 0;
+}
+
+static struct mem_access trapped_io_access = {
+	from_device,
+	to_device,
+};
+
+int handle_trapped_io(struct pt_regs *regs, unsigned long address)
+{
+	insn_size_t instruction;
+	int tmp;
+
+	if (trapped_io_disable)
+		return 0;
+	if (!lookup_tiop(address))
+		return 0;
+
+	WARN_ON(user_mode(regs));
+
+	if (copy_from_kernel_nofault(&instruction, (void *)(regs->pc),
+				     sizeof(instruction))) {
+		return 0;
+	}
+
+	tmp = handle_unaligned_access(instruction, regs,
+				      &trapped_io_access, 1, address);
+	return tmp == 0;
+}