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, 417 insertions, 0 deletions

diff --git a/net/atm/resources.c b/net/atm/resources.c
new file mode 100644
index 000000000..2b2d33eea
--- /dev/null
+++ b/net/atm/resources.c
@@ -0,0 +1,417 @@
+// SPDX-License-Identifier: GPL-2.0
+/* net/atm/resources.c - Statically allocated resources */
+
+/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
+
+/* Fixes
+ * Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+ * 2002/01 - don't free the whole struct sock on sk->destruct time,
+ * 	     use the default destruct function initialized by sock_init_data */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
+
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/atmdev.h>
+#include <linux/sonet.h>
+#include <linux/kernel.h> /* for barrier */
+#include <linux/module.h>
+#include <linux/bitops.h>
+#include <linux/capability.h>
+#include <linux/delay.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+
+#include <net/sock.h>	 /* for struct sock */
+
+#include "common.h"
+#include "resources.h"
+#include "addr.h"
+
+
+LIST_HEAD(atm_devs);
+DEFINE_MUTEX(atm_dev_mutex);
+
+static struct atm_dev *__alloc_atm_dev(const char *type)
+{
+	struct atm_dev *dev;
+
+	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+	if (!dev)
+		return NULL;
+	dev->type = type;
+	dev->signal = ATM_PHY_SIG_UNKNOWN;
+	dev->link_rate = ATM_OC3_PCR;
+	spin_lock_init(&dev->lock);
+	INIT_LIST_HEAD(&dev->local);
+	INIT_LIST_HEAD(&dev->lecs);
+
+	return dev;
+}
+
+static struct atm_dev *__atm_dev_lookup(int number)
+{
+	struct atm_dev *dev;
+
+	list_for_each_entry(dev, &atm_devs, dev_list) {
+		if (dev->number == number) {
+			atm_dev_hold(dev);
+			return dev;
+		}
+	}
+	return NULL;
+}
+
+struct atm_dev *atm_dev_lookup(int number)
+{
+	struct atm_dev *dev;
+
+	mutex_lock(&atm_dev_mutex);
+	dev = __atm_dev_lookup(number);
+	mutex_unlock(&atm_dev_mutex);
+	return dev;
+}
+EXPORT_SYMBOL(atm_dev_lookup);
+
+struct atm_dev *atm_dev_register(const char *type, struct device *parent,
+				 const struct atmdev_ops *ops, int number,
+				 unsigned long *flags)
+{
+	struct atm_dev *dev, *inuse;
+
+	dev = __alloc_atm_dev(type);
+	if (!dev) {
+		pr_err("no space for dev %s\n", type);
+		return NULL;
+	}
+	mutex_lock(&atm_dev_mutex);
+	if (number != -1) {
+		inuse = __atm_dev_lookup(number);
+		if (inuse) {
+			atm_dev_put(inuse);
+			mutex_unlock(&atm_dev_mutex);
+			kfree(dev);
+			return NULL;
+		}
+		dev->number = number;
+	} else {
+		dev->number = 0;
+		while ((inuse = __atm_dev_lookup(dev->number))) {
+			atm_dev_put(inuse);
+			dev->number++;
+		}
+	}
+
+	dev->ops = ops;
+	if (flags)
+		dev->flags = *flags;
+	else
+		memset(&dev->flags, 0, sizeof(dev->flags));
+	memset(&dev->stats, 0, sizeof(dev->stats));
+	refcount_set(&dev->refcnt, 1);
+
+	if (atm_proc_dev_register(dev) < 0) {
+		pr_err("atm_proc_dev_register failed for dev %s\n", type);
+		goto out_fail;
+	}
+
+	if (atm_register_sysfs(dev, parent) < 0) {
+		pr_err("atm_register_sysfs failed for dev %s\n", type);
+		atm_proc_dev_deregister(dev);
+		goto out_fail;
+	}
+
+	list_add_tail(&dev->dev_list, &atm_devs);
+
+out:
+	mutex_unlock(&atm_dev_mutex);
+	return dev;
+
+out_fail:
+	kfree(dev);
+	dev = NULL;
+	goto out;
+}
+EXPORT_SYMBOL(atm_dev_register);
+
+void atm_dev_deregister(struct atm_dev *dev)
+{
+	BUG_ON(test_bit(ATM_DF_REMOVED, &dev->flags));
+	set_bit(ATM_DF_REMOVED, &dev->flags);
+
+	/*
+	 * if we remove current device from atm_devs list, new device
+	 * with same number can appear, such we need deregister proc,
+	 * release async all vccs and remove them from vccs list too
+	 */
+	mutex_lock(&atm_dev_mutex);
+	list_del(&dev->dev_list);
+	mutex_unlock(&atm_dev_mutex);
+
+	atm_dev_release_vccs(dev);
+	atm_unregister_sysfs(dev);
+	atm_proc_dev_deregister(dev);
+
+	atm_dev_put(dev);
+}
+EXPORT_SYMBOL(atm_dev_deregister);
+
+static void copy_aal_stats(struct k_atm_aal_stats *from,
+    struct atm_aal_stats *to)
+{
+#define __HANDLE_ITEM(i) to->i = atomic_read(&from->i)
+	__AAL_STAT_ITEMS
+#undef __HANDLE_ITEM
+}
+
+static void subtract_aal_stats(struct k_atm_aal_stats *from,
+    struct atm_aal_stats *to)
+{
+#define __HANDLE_ITEM(i) atomic_sub(to->i, &from->i)
+	__AAL_STAT_ITEMS
+#undef __HANDLE_ITEM
+}
+
+static int fetch_stats(struct atm_dev *dev, struct atm_dev_stats __user *arg,
+		       int zero)
+{
+	struct atm_dev_stats tmp;
+	int error = 0;
+
+	copy_aal_stats(&dev->stats.aal0, &tmp.aal0);
+	copy_aal_stats(&dev->stats.aal34, &tmp.aal34);
+	copy_aal_stats(&dev->stats.aal5, &tmp.aal5);
+	if (arg)
+		error = copy_to_user(arg, &tmp, sizeof(tmp));
+	if (zero && !error) {
+		subtract_aal_stats(&dev->stats.aal0, &tmp.aal0);
+		subtract_aal_stats(&dev->stats.aal34, &tmp.aal34);
+		subtract_aal_stats(&dev->stats.aal5, &tmp.aal5);
+	}
+	return error ? -EFAULT : 0;
+}
+
+int atm_getnames(void __user *buf, int __user *iobuf_len)
+{
+	int error, len, size = 0;
+	struct atm_dev *dev;
+	struct list_head *p;
+	int *tmp_buf, *tmp_p;
+
+	if (get_user(len, iobuf_len))
+		return -EFAULT;
+	mutex_lock(&atm_dev_mutex);
+	list_for_each(p, &atm_devs)
+		size += sizeof(int);
+	if (size > len) {
+		mutex_unlock(&atm_dev_mutex);
+		return -E2BIG;
+	}
+	tmp_buf = kmalloc(size, GFP_ATOMIC);
+	if (!tmp_buf) {
+		mutex_unlock(&atm_dev_mutex);
+		return -ENOMEM;
+	}
+	tmp_p = tmp_buf;
+	list_for_each_entry(dev, &atm_devs, dev_list) {
+		*tmp_p++ = dev->number;
+	}
+	mutex_unlock(&atm_dev_mutex);
+	error = ((copy_to_user(buf, tmp_buf, size)) ||
+		 put_user(size, iobuf_len))
+		? -EFAULT : 0;
+	kfree(tmp_buf);
+	return error;
+}
+
+int atm_dev_ioctl(unsigned int cmd, void __user *buf, int __user *sioc_len,
+		  int number, int compat)
+{
+	int error, len, size = 0;
+	struct atm_dev *dev;
+
+	if (get_user(len, sioc_len))
+		return -EFAULT;
+
+	dev = try_then_request_module(atm_dev_lookup(number), "atm-device-%d",
+				      number);
+	if (!dev)
+		return -ENODEV;
+
+	switch (cmd) {
+	case ATM_GETTYPE:
+		size = strlen(dev->type) + 1;
+		if (copy_to_user(buf, dev->type, size)) {
+			error = -EFAULT;
+			goto done;
+		}
+		break;
+	case ATM_GETESI:
+		size = ESI_LEN;
+		if (copy_to_user(buf, dev->esi, size)) {
+			error = -EFAULT;
+			goto done;
+		}
+		break;
+	case ATM_SETESI:
+	{
+		int i;
+
+		for (i = 0; i < ESI_LEN; i++)
+			if (dev->esi[i]) {
+				error = -EEXIST;
+				goto done;
+			}
+	}
+		fallthrough;
+	case ATM_SETESIF:
+	{
+		unsigned char esi[ESI_LEN];
+
+		if (!capable(CAP_NET_ADMIN)) {
+			error = -EPERM;
+			goto done;
+		}
+		if (copy_from_user(esi, buf, ESI_LEN)) {
+			error = -EFAULT;
+			goto done;
+		}
+		memcpy(dev->esi, esi, ESI_LEN);
+		error =  ESI_LEN;
+		goto done;
+	}
+	case ATM_GETSTATZ:
+		if (!capable(CAP_NET_ADMIN)) {
+			error = -EPERM;
+			goto done;
+		}
+		fallthrough;
+	case ATM_GETSTAT:
+		size = sizeof(struct atm_dev_stats);
+		error = fetch_stats(dev, buf, cmd == ATM_GETSTATZ);
+		if (error)
+			goto done;
+		break;
+	case ATM_GETCIRANGE:
+		size = sizeof(struct atm_cirange);
+		if (copy_to_user(buf, &dev->ci_range, size)) {
+			error = -EFAULT;
+			goto done;
+		}
+		break;
+	case ATM_GETLINKRATE:
+		size = sizeof(int);
+		if (copy_to_user(buf, &dev->link_rate, size)) {
+			error = -EFAULT;
+			goto done;
+		}
+		break;
+	case ATM_RSTADDR:
+		if (!capable(CAP_NET_ADMIN)) {
+			error = -EPERM;
+			goto done;
+		}
+		atm_reset_addr(dev, ATM_ADDR_LOCAL);
+		break;
+	case ATM_ADDADDR:
+	case ATM_DELADDR:
+	case ATM_ADDLECSADDR:
+	case ATM_DELLECSADDR:
+	{
+		struct sockaddr_atmsvc addr;
+
+		if (!capable(CAP_NET_ADMIN)) {
+			error = -EPERM;
+			goto done;
+		}
+
+		if (copy_from_user(&addr, buf, sizeof(addr))) {
+			error = -EFAULT;
+			goto done;
+		}
+		if (cmd == ATM_ADDADDR || cmd == ATM_ADDLECSADDR)
+			error = atm_add_addr(dev, &addr,
+					     (cmd == ATM_ADDADDR ?
+					      ATM_ADDR_LOCAL : ATM_ADDR_LECS));
+		else
+			error = atm_del_addr(dev, &addr,
+					     (cmd == ATM_DELADDR ?
+					      ATM_ADDR_LOCAL : ATM_ADDR_LECS));
+		goto done;
+	}
+	case ATM_GETADDR:
+	case ATM_GETLECSADDR:
+		error = atm_get_addr(dev, buf, len,
+				     (cmd == ATM_GETADDR ?
+				      ATM_ADDR_LOCAL : ATM_ADDR_LECS));
+		if (error < 0)
+			goto done;
+		size = error;
+		/* may return 0, but later on size == 0 means "don't
+		   write the length" */
+		error = put_user(size, sioc_len) ? -EFAULT : 0;
+		goto done;
+	case ATM_SETLOOP:
+		if (__ATM_LM_XTRMT((int) (unsigned long) buf) &&
+		    __ATM_LM_XTLOC((int) (unsigned long) buf) >
+		    __ATM_LM_XTRMT((int) (unsigned long) buf)) {
+			error = -EINVAL;
+			goto done;
+		}
+		fallthrough;
+	case ATM_SETCIRANGE:
+	case SONET_GETSTATZ:
+	case SONET_SETDIAG:
+	case SONET_CLRDIAG:
+	case SONET_SETFRAMING:
+		if (!capable(CAP_NET_ADMIN)) {
+			error = -EPERM;
+			goto done;
+		}
+		fallthrough;
+	default:
+		if (IS_ENABLED(CONFIG_COMPAT) && compat) {
+#ifdef CONFIG_COMPAT
+			if (!dev->ops->compat_ioctl) {
+				error = -EINVAL;
+				goto done;
+			}
+			size = dev->ops->compat_ioctl(dev, cmd, buf);
+#endif
+		} else {
+			if (!dev->ops->ioctl) {
+				error = -EINVAL;
+				goto done;
+			}
+			size = dev->ops->ioctl(dev, cmd, buf);
+		}
+		if (size < 0) {
+			error = (size == -ENOIOCTLCMD ? -ENOTTY : size);
+			goto done;
+		}
+	}
+
+	if (size)
+		error = put_user(size, sioc_len) ? -EFAULT : 0;
+	else
+		error = 0;
+done:
+	atm_dev_put(dev);
+	return error;
+}
+
+void *atm_dev_seq_start(struct seq_file *seq, loff_t *pos)
+{
+	mutex_lock(&atm_dev_mutex);
+	return seq_list_start_head(&atm_devs, *pos);
+}
+
+void atm_dev_seq_stop(struct seq_file *seq, void *v)
+{
+	mutex_unlock(&atm_dev_mutex);
+}
+
+void *atm_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	return seq_list_next(v, &atm_devs, pos);
+}