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, 278 insertions, 0 deletions

diff --git a/arch/s390/boot/vmem.c b/arch/s390/boot/vmem.c
new file mode 100644
index 000000000..4d1d0d8e9
--- /dev/null
+++ b/arch/s390/boot/vmem.c
@@ -0,0 +1,278 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/sched/task.h>
+#include <linux/pgtable.h>
+#include <asm/pgalloc.h>
+#include <asm/facility.h>
+#include <asm/sections.h>
+#include <asm/mem_detect.h>
+#include <asm/maccess.h>
+#include <asm/abs_lowcore.h>
+#include "decompressor.h"
+#include "boot.h"
+
+#define init_mm			(*(struct mm_struct *)vmlinux.init_mm_off)
+#define swapper_pg_dir		vmlinux.swapper_pg_dir_off
+#define invalid_pg_dir		vmlinux.invalid_pg_dir_off
+
+/*
+ * Mimic virt_to_kpte() in lack of init_mm symbol. Skip pmd NULL check though.
+ */
+static inline pte_t *__virt_to_kpte(unsigned long va)
+{
+	return pte_offset_kernel(pmd_offset(pud_offset(p4d_offset(pgd_offset_k(va), va), va), va), va);
+}
+
+unsigned long __bootdata_preserved(s390_invalid_asce);
+unsigned long __bootdata(pgalloc_pos);
+unsigned long __bootdata(pgalloc_end);
+unsigned long __bootdata(pgalloc_low);
+
+enum populate_mode {
+	POPULATE_NONE,
+	POPULATE_ONE2ONE,
+	POPULATE_ABS_LOWCORE,
+};
+
+static void boot_check_oom(void)
+{
+	if (pgalloc_pos < pgalloc_low)
+		error("out of memory on boot\n");
+}
+
+static void pgtable_populate_init(void)
+{
+	unsigned long initrd_end;
+	unsigned long kernel_end;
+
+	kernel_end = vmlinux.default_lma + vmlinux.image_size + vmlinux.bss_size;
+	pgalloc_low = round_up(kernel_end, PAGE_SIZE);
+	if (IS_ENABLED(CONFIG_BLK_DEV_INITRD)) {
+		initrd_end =  round_up(initrd_data.start + initrd_data.size, _SEGMENT_SIZE);
+		pgalloc_low = max(pgalloc_low, initrd_end);
+	}
+
+	pgalloc_end = round_down(get_mem_detect_end(), PAGE_SIZE);
+	pgalloc_pos = pgalloc_end;
+
+	boot_check_oom();
+}
+
+static void *boot_alloc_pages(unsigned int order)
+{
+	unsigned long size = PAGE_SIZE << order;
+
+	pgalloc_pos -= size;
+	pgalloc_pos = round_down(pgalloc_pos, size);
+
+	boot_check_oom();
+
+	return (void *)pgalloc_pos;
+}
+
+static void *boot_crst_alloc(unsigned long val)
+{
+	unsigned long *table;
+
+	table = boot_alloc_pages(CRST_ALLOC_ORDER);
+	if (table)
+		crst_table_init(table, val);
+	return table;
+}
+
+static pte_t *boot_pte_alloc(void)
+{
+	static void *pte_leftover;
+	pte_t *pte;
+
+	BUILD_BUG_ON(_PAGE_TABLE_SIZE * 2 != PAGE_SIZE);
+
+	if (!pte_leftover) {
+		pte_leftover = boot_alloc_pages(0);
+		pte = pte_leftover + _PAGE_TABLE_SIZE;
+	} else {
+		pte = pte_leftover;
+		pte_leftover = NULL;
+	}
+	memset64((u64 *)pte, _PAGE_INVALID, PTRS_PER_PTE);
+	return pte;
+}
+
+static unsigned long _pa(unsigned long addr, enum populate_mode mode)
+{
+	switch (mode) {
+	case POPULATE_NONE:
+		return -1;
+	case POPULATE_ONE2ONE:
+		return addr;
+	case POPULATE_ABS_LOWCORE:
+		return __abs_lowcore_pa(addr);
+	default:
+		return -1;
+	}
+}
+
+static bool can_large_pud(pud_t *pu_dir, unsigned long addr, unsigned long end)
+{
+	return machine.has_edat2 &&
+	       IS_ALIGNED(addr, PUD_SIZE) && (end - addr) >= PUD_SIZE;
+}
+
+static bool can_large_pmd(pmd_t *pm_dir, unsigned long addr, unsigned long end)
+{
+	return machine.has_edat1 &&
+	       IS_ALIGNED(addr, PMD_SIZE) && (end - addr) >= PMD_SIZE;
+}
+
+static void pgtable_pte_populate(pmd_t *pmd, unsigned long addr, unsigned long end,
+				 enum populate_mode mode)
+{
+	unsigned long next;
+	pte_t *pte, entry;
+
+	pte = pte_offset_kernel(pmd, addr);
+	for (; addr < end; addr += PAGE_SIZE, pte++) {
+		if (pte_none(*pte)) {
+			entry = __pte(_pa(addr, mode));
+			entry = set_pte_bit(entry, PAGE_KERNEL_EXEC);
+			set_pte(pte, entry);
+		}
+	}
+}
+
+static void pgtable_pmd_populate(pud_t *pud, unsigned long addr, unsigned long end,
+				 enum populate_mode mode)
+{
+	unsigned long next;
+	pmd_t *pmd, entry;
+	pte_t *pte;
+
+	pmd = pmd_offset(pud, addr);
+	for (; addr < end; addr = next, pmd++) {
+		next = pmd_addr_end(addr, end);
+		if (pmd_none(*pmd)) {
+			if (can_large_pmd(pmd, addr, next)) {
+				entry = __pmd(_pa(addr, mode));
+				entry = set_pmd_bit(entry, SEGMENT_KERNEL_EXEC);
+				set_pmd(pmd, entry);
+				continue;
+			}
+			pte = boot_pte_alloc();
+			pmd_populate(&init_mm, pmd, pte);
+		} else if (pmd_large(*pmd)) {
+			continue;
+		}
+		pgtable_pte_populate(pmd, addr, next, mode);
+	}
+}
+
+static void pgtable_pud_populate(p4d_t *p4d, unsigned long addr, unsigned long end,
+				 enum populate_mode mode)
+{
+	unsigned long next;
+	pud_t *pud, entry;
+	pmd_t *pmd;
+
+	pud = pud_offset(p4d, addr);
+	for (; addr < end; addr = next, pud++) {
+		next = pud_addr_end(addr, end);
+		if (pud_none(*pud)) {
+			if (can_large_pud(pud, addr, next)) {
+				entry = __pud(_pa(addr, mode));
+				entry = set_pud_bit(entry, REGION3_KERNEL_EXEC);
+				set_pud(pud, entry);
+				continue;
+			}
+			pmd = boot_crst_alloc(_SEGMENT_ENTRY_EMPTY);
+			pud_populate(&init_mm, pud, pmd);
+		} else if (pud_large(*pud)) {
+			continue;
+		}
+		pgtable_pmd_populate(pud, addr, next, mode);
+	}
+}
+
+static void pgtable_p4d_populate(pgd_t *pgd, unsigned long addr, unsigned long end,
+				 enum populate_mode mode)
+{
+	unsigned long next;
+	p4d_t *p4d;
+	pud_t *pud;
+
+	p4d = p4d_offset(pgd, addr);
+	for (; addr < end; addr = next, p4d++) {
+		next = p4d_addr_end(addr, end);
+		if (p4d_none(*p4d)) {
+			pud = boot_crst_alloc(_REGION3_ENTRY_EMPTY);
+			p4d_populate(&init_mm, p4d, pud);
+		}
+		pgtable_pud_populate(p4d, addr, next, mode);
+	}
+}
+
+static void pgtable_populate(unsigned long addr, unsigned long end, enum populate_mode mode)
+{
+	unsigned long next;
+	pgd_t *pgd;
+	p4d_t *p4d;
+
+	pgd = pgd_offset(&init_mm, addr);
+	for (; addr < end; addr = next, pgd++) {
+		next = pgd_addr_end(addr, end);
+		if (pgd_none(*pgd)) {
+			p4d = boot_crst_alloc(_REGION2_ENTRY_EMPTY);
+			pgd_populate(&init_mm, pgd, p4d);
+		}
+		pgtable_p4d_populate(pgd, addr, next, mode);
+	}
+}
+
+void setup_vmem(unsigned long asce_limit)
+{
+	unsigned long start, end;
+	unsigned long asce_type;
+	unsigned long asce_bits;
+	int i;
+
+	if (asce_limit == _REGION1_SIZE) {
+		asce_type = _REGION2_ENTRY_EMPTY;
+		asce_bits = _ASCE_TYPE_REGION2 | _ASCE_TABLE_LENGTH;
+	} else {
+		asce_type = _REGION3_ENTRY_EMPTY;
+		asce_bits = _ASCE_TYPE_REGION3 | _ASCE_TABLE_LENGTH;
+	}
+	s390_invalid_asce = invalid_pg_dir | _ASCE_TYPE_REGION3 | _ASCE_TABLE_LENGTH;
+
+	crst_table_init((unsigned long *)swapper_pg_dir, asce_type);
+	crst_table_init((unsigned long *)invalid_pg_dir, _REGION3_ENTRY_EMPTY);
+
+	/*
+	 * To allow prefixing the lowcore must be mapped with 4KB pages.
+	 * To prevent creation of a large page at address 0 first map
+	 * the lowcore and create the identity mapping only afterwards.
+	 */
+	pgtable_populate_init();
+	pgtable_populate(0, sizeof(struct lowcore), POPULATE_ONE2ONE);
+	for_each_mem_detect_usable_block(i, &start, &end)
+		pgtable_populate(start, end, POPULATE_ONE2ONE);
+	pgtable_populate(__abs_lowcore, __abs_lowcore + sizeof(struct lowcore),
+			 POPULATE_ABS_LOWCORE);
+	pgtable_populate(__memcpy_real_area, __memcpy_real_area + PAGE_SIZE,
+			 POPULATE_NONE);
+	memcpy_real_ptep = __virt_to_kpte(__memcpy_real_area);
+
+	S390_lowcore.kernel_asce = swapper_pg_dir | asce_bits;
+	S390_lowcore.user_asce = s390_invalid_asce;
+
+	__ctl_load(S390_lowcore.kernel_asce, 1, 1);
+	__ctl_load(S390_lowcore.user_asce, 7, 7);
+	__ctl_load(S390_lowcore.kernel_asce, 13, 13);
+
+	init_mm.context.asce = S390_lowcore.kernel_asce;
+}
+
+unsigned long vmem_estimate_memory_needs(unsigned long online_mem_total)
+{
+	unsigned long pages = DIV_ROUND_UP(online_mem_total, PAGE_SIZE);
+
+	return DIV_ROUND_UP(pages, _PAGE_ENTRIES) * _PAGE_TABLE_SIZE * 2;
+}