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, 350 insertions, 0 deletions

diff --git a/arch/mips/mm/c-octeon.c b/arch/mips/mm/c-octeon.c
new file mode 100644
index 000000000..c7ed589de
--- /dev/null
+++ b/arch/mips/mm/c-octeon.c
@@ -0,0 +1,350 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2005-2007 Cavium Networks
+ */
+#include <linux/export.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/smp.h>
+#include <linux/mm.h>
+#include <linux/bitops.h>
+#include <linux/cpu.h>
+#include <linux/io.h>
+
+#include <asm/bcache.h>
+#include <asm/bootinfo.h>
+#include <asm/cacheops.h>
+#include <asm/cpu-features.h>
+#include <asm/cpu-type.h>
+#include <asm/page.h>
+#include <asm/r4kcache.h>
+#include <asm/traps.h>
+#include <asm/mmu_context.h>
+
+#include <asm/octeon/octeon.h>
+
+unsigned long long cache_err_dcache[NR_CPUS];
+EXPORT_SYMBOL_GPL(cache_err_dcache);
+
+/*
+ * Octeon automatically flushes the dcache on tlb changes, so
+ * from Linux's viewpoint it acts much like a physically
+ * tagged cache. No flushing is needed
+ *
+ */
+static void octeon_flush_data_cache_page(unsigned long addr)
+{
+    /* Nothing to do */
+}
+
+static inline void octeon_local_flush_icache(void)
+{
+	asm volatile ("synci 0($0)");
+}
+
+/*
+ * Flush local I-cache for the specified range.
+ */
+static void local_octeon_flush_icache_range(unsigned long start,
+					    unsigned long end)
+{
+	octeon_local_flush_icache();
+}
+
+/**
+ * octeon_flush_icache_all_cores -  Flush caches as necessary for all cores
+ * affected by a vma. If no vma is supplied, all cores are flushed.
+ *
+ * @vma:    VMA to flush or NULL to flush all icaches.
+ */
+static void octeon_flush_icache_all_cores(struct vm_area_struct *vma)
+{
+	extern void octeon_send_ipi_single(int cpu, unsigned int action);
+#ifdef CONFIG_SMP
+	int cpu;
+	cpumask_t mask;
+#endif
+
+	mb();
+	octeon_local_flush_icache();
+#ifdef CONFIG_SMP
+	preempt_disable();
+	cpu = smp_processor_id();
+
+	/*
+	 * If we have a vma structure, we only need to worry about
+	 * cores it has been used on
+	 */
+	if (vma)
+		mask = *mm_cpumask(vma->vm_mm);
+	else
+		mask = *cpu_online_mask;
+	cpumask_clear_cpu(cpu, &mask);
+	for_each_cpu(cpu, &mask)
+		octeon_send_ipi_single(cpu, SMP_ICACHE_FLUSH);
+
+	preempt_enable();
+#endif
+}
+
+
+/*
+ * Called to flush the icache on all cores
+ */
+static void octeon_flush_icache_all(void)
+{
+	octeon_flush_icache_all_cores(NULL);
+}
+
+
+/**
+ * octeon_flush_cache_mm - flush all memory associated with a memory context.
+ *
+ * @mm:	    Memory context to flush
+ */
+static void octeon_flush_cache_mm(struct mm_struct *mm)
+{
+	/*
+	 * According to the R4K version of this file, CPUs without
+	 * dcache aliases don't need to do anything here
+	 */
+}
+
+
+/*
+ * Flush a range of kernel addresses out of the icache
+ *
+ */
+static void octeon_flush_icache_range(unsigned long start, unsigned long end)
+{
+	octeon_flush_icache_all_cores(NULL);
+}
+
+
+/**
+ * octeon_flush_cache_range - Flush a range out of a vma
+ *
+ * @vma:    VMA to flush
+ * @start:  beginning address for flush
+ * @end:    ending address for flush
+ */
+static void octeon_flush_cache_range(struct vm_area_struct *vma,
+				     unsigned long start, unsigned long end)
+{
+	if (vma->vm_flags & VM_EXEC)
+		octeon_flush_icache_all_cores(vma);
+}
+
+
+/**
+ * octeon_flush_cache_page - Flush a specific page of a vma
+ *
+ * @vma:    VMA to flush page for
+ * @page:   Page to flush
+ * @pfn:    Page frame number
+ */
+static void octeon_flush_cache_page(struct vm_area_struct *vma,
+				    unsigned long page, unsigned long pfn)
+{
+	if (vma->vm_flags & VM_EXEC)
+		octeon_flush_icache_all_cores(vma);
+}
+
+static void octeon_flush_kernel_vmap_range(unsigned long vaddr, int size)
+{
+	BUG();
+}
+
+/*
+ * Probe Octeon's caches
+ *
+ */
+static void probe_octeon(void)
+{
+	unsigned long icache_size;
+	unsigned long dcache_size;
+	unsigned int config1;
+	struct cpuinfo_mips *c = &current_cpu_data;
+	int cputype = current_cpu_type();
+
+	config1 = read_c0_config1();
+	switch (cputype) {
+	case CPU_CAVIUM_OCTEON:
+	case CPU_CAVIUM_OCTEON_PLUS:
+		c->icache.linesz = 2 << ((config1 >> 19) & 7);
+		c->icache.sets = 64 << ((config1 >> 22) & 7);
+		c->icache.ways = 1 + ((config1 >> 16) & 7);
+		c->icache.flags |= MIPS_CACHE_VTAG;
+		icache_size =
+			c->icache.sets * c->icache.ways * c->icache.linesz;
+		c->icache.waybit = ffs(icache_size / c->icache.ways) - 1;
+		c->dcache.linesz = 128;
+		if (cputype == CPU_CAVIUM_OCTEON_PLUS)
+			c->dcache.sets = 2; /* CN5XXX has two Dcache sets */
+		else
+			c->dcache.sets = 1; /* CN3XXX has one Dcache set */
+		c->dcache.ways = 64;
+		dcache_size =
+			c->dcache.sets * c->dcache.ways * c->dcache.linesz;
+		c->dcache.waybit = ffs(dcache_size / c->dcache.ways) - 1;
+		c->options |= MIPS_CPU_PREFETCH;
+		break;
+
+	case CPU_CAVIUM_OCTEON2:
+		c->icache.linesz = 2 << ((config1 >> 19) & 7);
+		c->icache.sets = 8;
+		c->icache.ways = 37;
+		c->icache.flags |= MIPS_CACHE_VTAG;
+		icache_size = c->icache.sets * c->icache.ways * c->icache.linesz;
+
+		c->dcache.linesz = 128;
+		c->dcache.ways = 32;
+		c->dcache.sets = 8;
+		dcache_size = c->dcache.sets * c->dcache.ways * c->dcache.linesz;
+		c->options |= MIPS_CPU_PREFETCH;
+		break;
+
+	case CPU_CAVIUM_OCTEON3:
+		c->icache.linesz = 128;
+		c->icache.sets = 16;
+		c->icache.ways = 39;
+		c->icache.flags |= MIPS_CACHE_VTAG;
+		icache_size = c->icache.sets * c->icache.ways * c->icache.linesz;
+
+		c->dcache.linesz = 128;
+		c->dcache.ways = 32;
+		c->dcache.sets = 8;
+		dcache_size = c->dcache.sets * c->dcache.ways * c->dcache.linesz;
+		c->options |= MIPS_CPU_PREFETCH;
+		break;
+
+	default:
+		panic("Unsupported Cavium Networks CPU type");
+		break;
+	}
+
+	/* compute a couple of other cache variables */
+	c->icache.waysize = icache_size / c->icache.ways;
+	c->dcache.waysize = dcache_size / c->dcache.ways;
+
+	c->icache.sets = icache_size / (c->icache.linesz * c->icache.ways);
+	c->dcache.sets = dcache_size / (c->dcache.linesz * c->dcache.ways);
+
+	if (smp_processor_id() == 0) {
+		pr_info("Primary instruction cache %ldkB, %s, %d way, "
+			"%d sets, linesize %d bytes.\n",
+			icache_size >> 10,
+			cpu_has_vtag_icache ?
+				"virtually tagged" : "physically tagged",
+			c->icache.ways, c->icache.sets, c->icache.linesz);
+
+		pr_info("Primary data cache %ldkB, %d-way, %d sets, "
+			"linesize %d bytes.\n",
+			dcache_size >> 10, c->dcache.ways,
+			c->dcache.sets, c->dcache.linesz);
+	}
+}
+
+static void  octeon_cache_error_setup(void)
+{
+	extern char except_vec2_octeon;
+	set_handler(0x100, &except_vec2_octeon, 0x80);
+}
+
+/*
+ * Setup the Octeon cache flush routines
+ *
+ */
+void octeon_cache_init(void)
+{
+	probe_octeon();
+
+	shm_align_mask = PAGE_SIZE - 1;
+
+	flush_cache_all			= octeon_flush_icache_all;
+	__flush_cache_all		= octeon_flush_icache_all;
+	flush_cache_mm			= octeon_flush_cache_mm;
+	flush_cache_page		= octeon_flush_cache_page;
+	flush_cache_range		= octeon_flush_cache_range;
+	flush_icache_all		= octeon_flush_icache_all;
+	flush_data_cache_page		= octeon_flush_data_cache_page;
+	flush_icache_range		= octeon_flush_icache_range;
+	local_flush_icache_range	= local_octeon_flush_icache_range;
+	__flush_icache_user_range	= octeon_flush_icache_range;
+	__local_flush_icache_user_range	= local_octeon_flush_icache_range;
+
+	__flush_kernel_vmap_range	= octeon_flush_kernel_vmap_range;
+
+	build_clear_page();
+	build_copy_page();
+
+	board_cache_error_setup = octeon_cache_error_setup;
+}
+
+/*
+ * Handle a cache error exception
+ */
+static RAW_NOTIFIER_HEAD(co_cache_error_chain);
+
+int register_co_cache_error_notifier(struct notifier_block *nb)
+{
+	return raw_notifier_chain_register(&co_cache_error_chain, nb);
+}
+EXPORT_SYMBOL_GPL(register_co_cache_error_notifier);
+
+int unregister_co_cache_error_notifier(struct notifier_block *nb)
+{
+	return raw_notifier_chain_unregister(&co_cache_error_chain, nb);
+}
+EXPORT_SYMBOL_GPL(unregister_co_cache_error_notifier);
+
+static void co_cache_error_call_notifiers(unsigned long val)
+{
+	int rv = raw_notifier_call_chain(&co_cache_error_chain, val, NULL);
+	if ((rv & ~NOTIFY_STOP_MASK) != NOTIFY_OK) {
+		u64 dcache_err;
+		unsigned long coreid = cvmx_get_core_num();
+		u64 icache_err = read_octeon_c0_icacheerr();
+
+		if (val) {
+			dcache_err = cache_err_dcache[coreid];
+			cache_err_dcache[coreid] = 0;
+		} else {
+			dcache_err = read_octeon_c0_dcacheerr();
+		}
+
+		pr_err("Core%lu: Cache error exception:\n", coreid);
+		pr_err("cp0_errorepc == %lx\n", read_c0_errorepc());
+		if (icache_err & 1) {
+			pr_err("CacheErr (Icache) == %llx\n",
+			       (unsigned long long)icache_err);
+			write_octeon_c0_icacheerr(0);
+		}
+		if (dcache_err & 1) {
+			pr_err("CacheErr (Dcache) == %llx\n",
+			       (unsigned long long)dcache_err);
+		}
+	}
+}
+
+/*
+ * Called when the exception is recoverable
+ */
+
+asmlinkage void cache_parity_error_octeon_recoverable(void)
+{
+	co_cache_error_call_notifiers(0);
+}
+
+/*
+ * Called when the exception is not recoverable
+ */
+
+asmlinkage void cache_parity_error_octeon_non_recoverable(void)
+{
+	co_cache_error_call_notifiers(1);
+	panic("Can't handle cache error: nested exception");
+}