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, 266 insertions, 0 deletions

diff --git a/drivers/mtd/chips/gen_probe.c b/drivers/mtd/chips/gen_probe.c
new file mode 100644
index 000000000..4d4f97841
--- /dev/null
+++ b/drivers/mtd/chips/gen_probe.c
@@ -0,0 +1,266 @@
+/*
+ * Routines common to all CFI-type probes.
+ * (C) 2001-2003 Red Hat, Inc.
+ * GPL'd
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/cfi.h>
+#include <linux/mtd/gen_probe.h>
+
+static struct mtd_info *check_cmd_set(struct map_info *, int);
+static struct cfi_private *genprobe_ident_chips(struct map_info *map,
+						struct chip_probe *cp);
+static int genprobe_new_chip(struct map_info *map, struct chip_probe *cp,
+			     struct cfi_private *cfi);
+
+struct mtd_info *mtd_do_chip_probe(struct map_info *map, struct chip_probe *cp)
+{
+	struct mtd_info *mtd;
+	struct cfi_private *cfi;
+
+	/* First probe the map to see if we have CFI stuff there. */
+	cfi = genprobe_ident_chips(map, cp);
+
+	if (!cfi)
+		return NULL;
+
+	map->fldrv_priv = cfi;
+	/* OK we liked it. Now find a driver for the command set it talks */
+
+	mtd = check_cmd_set(map, 1); /* First the primary cmdset */
+	if (!mtd)
+		mtd = check_cmd_set(map, 0); /* Then the secondary */
+
+	if (mtd) {
+		if (mtd->size > map->size) {
+			printk(KERN_WARNING "Reducing visibility of %ldKiB chip to %ldKiB\n",
+			       (unsigned long)mtd->size >> 10,
+			       (unsigned long)map->size >> 10);
+			mtd->size = map->size;
+		}
+		return mtd;
+	}
+
+	printk(KERN_WARNING"gen_probe: No supported Vendor Command Set found\n");
+
+	kfree(cfi->cfiq);
+	kfree(cfi);
+	map->fldrv_priv = NULL;
+	return NULL;
+}
+EXPORT_SYMBOL(mtd_do_chip_probe);
+
+
+static struct cfi_private *genprobe_ident_chips(struct map_info *map, struct chip_probe *cp)
+{
+	struct cfi_private cfi;
+	struct cfi_private *retcfi;
+	unsigned long *chip_map;
+	int max_chips;
+	int i, j;
+
+	memset(&cfi, 0, sizeof(cfi));
+
+	/* Call the probetype-specific code with all permutations of
+	   interleave and device type, etc. */
+	if (!genprobe_new_chip(map, cp, &cfi)) {
+		/* The probe didn't like it */
+		pr_debug("%s: Found no %s device at location zero\n",
+			 cp->name, map->name);
+		return NULL;
+	}
+
+#if 0 /* Let the CFI probe routine do this sanity check. The Intel and AMD
+	 probe routines won't ever return a broken CFI structure anyway,
+	 because they make them up themselves.
+      */
+	if (cfi.cfiq->NumEraseRegions == 0) {
+		printk(KERN_WARNING "Number of erase regions is zero\n");
+		kfree(cfi.cfiq);
+		return NULL;
+	}
+#endif
+	cfi.chipshift = cfi.cfiq->DevSize;
+
+	if (cfi_interleave_is_1(&cfi)) {
+		;
+	} else if (cfi_interleave_is_2(&cfi)) {
+		cfi.chipshift++;
+	} else if (cfi_interleave_is_4((&cfi))) {
+		cfi.chipshift += 2;
+	} else if (cfi_interleave_is_8(&cfi)) {
+		cfi.chipshift += 3;
+	} else {
+		BUG();
+	}
+
+	cfi.numchips = 1;
+
+	/*
+	 * Allocate memory for bitmap of valid chips.
+	 * Align bitmap storage size to full byte.
+	 */
+	max_chips = map->size >> cfi.chipshift;
+	if (!max_chips) {
+		printk(KERN_WARNING "NOR chip too large to fit in mapping. Attempting to cope...\n");
+		max_chips = 1;
+	}
+
+	chip_map = bitmap_zalloc(max_chips, GFP_KERNEL);
+	if (!chip_map) {
+		kfree(cfi.cfiq);
+		return NULL;
+	}
+
+	set_bit(0, chip_map); /* Mark first chip valid */
+
+	/*
+	 * Now probe for other chips, checking sensibly for aliases while
+	 * we're at it. The new_chip probe above should have let the first
+	 * chip in read mode.
+	 */
+
+	for (i = 1; i < max_chips; i++) {
+		cp->probe_chip(map, i << cfi.chipshift, chip_map, &cfi);
+	}
+
+	/*
+	 * Now allocate the space for the structures we need to return to
+	 * our caller, and copy the appropriate data into them.
+	 */
+
+	retcfi = kmalloc(struct_size(retcfi, chips, cfi.numchips), GFP_KERNEL);
+
+	if (!retcfi) {
+		kfree(cfi.cfiq);
+		bitmap_free(chip_map);
+		return NULL;
+	}
+
+	memcpy(retcfi, &cfi, sizeof(cfi));
+	memset(&retcfi->chips[0], 0, sizeof(struct flchip) * cfi.numchips);
+
+	for (i = 0, j = 0; (j < cfi.numchips) && (i < max_chips); i++) {
+		if(test_bit(i, chip_map)) {
+			struct flchip *pchip = &retcfi->chips[j++];
+
+			pchip->start = (i << cfi.chipshift);
+			pchip->state = FL_READY;
+			init_waitqueue_head(&pchip->wq);
+			mutex_init(&pchip->mutex);
+		}
+	}
+
+	bitmap_free(chip_map);
+	return retcfi;
+}
+
+
+static int genprobe_new_chip(struct map_info *map, struct chip_probe *cp,
+			     struct cfi_private *cfi)
+{
+	int min_chips = (map_bankwidth(map)/4?:1); /* At most 4-bytes wide. */
+	int max_chips = map_bankwidth(map); /* And minimum 1 */
+	int nr_chips, type;
+
+	for (nr_chips = max_chips; nr_chips >= min_chips; nr_chips >>= 1) {
+
+		if (!cfi_interleave_supported(nr_chips))
+		    continue;
+
+		cfi->interleave = nr_chips;
+
+		/* Minimum device size. Don't look for one 8-bit device
+		   in a 16-bit bus, etc. */
+		type = map_bankwidth(map) / nr_chips;
+
+		for (; type <= CFI_DEVICETYPE_X32; type<<=1) {
+			cfi->device_type = type;
+
+			if (cp->probe_chip(map, 0, NULL, cfi))
+				return 1;
+		}
+	}
+	return 0;
+}
+
+typedef struct mtd_info *cfi_cmdset_fn_t(struct map_info *, int);
+
+extern cfi_cmdset_fn_t cfi_cmdset_0001;
+extern cfi_cmdset_fn_t cfi_cmdset_0002;
+extern cfi_cmdset_fn_t cfi_cmdset_0020;
+
+static inline struct mtd_info *cfi_cmdset_unknown(struct map_info *map,
+						  int primary)
+{
+	struct cfi_private *cfi = map->fldrv_priv;
+	__u16 type = primary?cfi->cfiq->P_ID:cfi->cfiq->A_ID;
+#ifdef CONFIG_MODULES
+	cfi_cmdset_fn_t *probe_function;
+	char *probename;
+
+	probename = kasprintf(GFP_KERNEL, "cfi_cmdset_%4.4X", type);
+	if (!probename)
+		return NULL;
+
+	probe_function = __symbol_get(probename);
+	if (!probe_function) {
+		request_module("cfi_cmdset_%4.4X", type);
+		probe_function = __symbol_get(probename);
+	}
+	kfree(probename);
+
+	if (probe_function) {
+		struct mtd_info *mtd;
+
+		mtd = (*probe_function)(map, primary);
+		/* If it was happy, it'll have increased its own use count */
+		symbol_put_addr(probe_function);
+		return mtd;
+	}
+#endif
+	printk(KERN_NOTICE "Support for command set %04X not present\n", type);
+
+	return NULL;
+}
+
+static struct mtd_info *check_cmd_set(struct map_info *map, int primary)
+{
+	struct cfi_private *cfi = map->fldrv_priv;
+	__u16 type = primary?cfi->cfiq->P_ID:cfi->cfiq->A_ID;
+
+	if (type == P_ID_NONE || type == P_ID_RESERVED)
+		return NULL;
+
+	switch(type){
+		/* We need these for the !CONFIG_MODULES case,
+		   because symbol_get() doesn't work there */
+#ifdef CONFIG_MTD_CFI_INTELEXT
+	case P_ID_INTEL_EXT:
+	case P_ID_INTEL_STD:
+	case P_ID_INTEL_PERFORMANCE:
+		return cfi_cmdset_0001(map, primary);
+#endif
+#ifdef CONFIG_MTD_CFI_AMDSTD
+	case P_ID_AMD_STD:
+	case P_ID_SST_OLD:
+	case P_ID_WINBOND:
+		return cfi_cmdset_0002(map, primary);
+#endif
+#ifdef CONFIG_MTD_CFI_STAA
+        case P_ID_ST_ADV:
+		return cfi_cmdset_0020(map, primary);
+#endif
+	default:
+		return cfi_cmdset_unknown(map, primary);
+	}
+}
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
+MODULE_DESCRIPTION("Helper routines for flash chip probe code");