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, 433 insertions, 0 deletions

diff --git a/security/apparmor/policy_ns.c b/security/apparmor/policy_ns.c
new file mode 100644
index 000000000..fd5b7afbc
--- /dev/null
+++ b/security/apparmor/policy_ns.c
@@ -0,0 +1,433 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * AppArmor security module
+ *
+ * This file contains AppArmor policy manipulation functions
+ *
+ * Copyright (C) 1998-2008 Novell/SUSE
+ * Copyright 2009-2017 Canonical Ltd.
+ *
+ * AppArmor policy namespaces, allow for different sets of policies
+ * to be loaded for tasks within the namespace.
+ */
+
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+
+#include "include/apparmor.h"
+#include "include/cred.h"
+#include "include/policy_ns.h"
+#include "include/label.h"
+#include "include/policy.h"
+
+/* kernel label */
+struct aa_label *kernel_t;
+
+/* root profile namespace */
+struct aa_ns *root_ns;
+const char *aa_hidden_ns_name = "---";
+
+/**
+ * aa_ns_visible - test if @view is visible from @curr
+ * @curr: namespace to treat as the parent (NOT NULL)
+ * @view: namespace to test if visible from @curr (NOT NULL)
+ * @subns: whether view of a subns is allowed
+ *
+ * Returns: true if @view is visible from @curr else false
+ */
+bool aa_ns_visible(struct aa_ns *curr, struct aa_ns *view, bool subns)
+{
+	if (curr == view)
+		return true;
+
+	if (!subns)
+		return false;
+
+	for ( ; view; view = view->parent) {
+		if (view->parent == curr)
+			return true;
+	}
+
+	return false;
+}
+
+/**
+ * aa_ns_name - Find the ns name to display for @view from @curr
+ * @curr: current namespace (NOT NULL)
+ * @view: namespace attempting to view (NOT NULL)
+ * @subns: are subns visible
+ *
+ * Returns: name of @view visible from @curr
+ */
+const char *aa_ns_name(struct aa_ns *curr, struct aa_ns *view, bool subns)
+{
+	/* if view == curr then the namespace name isn't displayed */
+	if (curr == view)
+		return "";
+
+	if (aa_ns_visible(curr, view, subns)) {
+		/* at this point if a ns is visible it is in a view ns
+		 * thus the curr ns.hname is a prefix of its name.
+		 * Only output the virtualized portion of the name
+		 * Add + 2 to skip over // separating curr hname prefix
+		 * from the visible tail of the views hname
+		 */
+		return view->base.hname + strlen(curr->base.hname) + 2;
+	}
+
+	return aa_hidden_ns_name;
+}
+
+static struct aa_profile *alloc_unconfined(const char *name)
+{
+	struct aa_profile *profile;
+
+	profile = aa_alloc_null(NULL, name, GFP_KERNEL);
+	if (!profile)
+		return NULL;
+
+	profile->label.flags |= FLAG_IX_ON_NAME_ERROR |
+		FLAG_IMMUTIBLE | FLAG_NS_COUNT | FLAG_UNCONFINED;
+	profile->mode = APPARMOR_UNCONFINED;
+
+	return profile;
+}
+
+/**
+ * alloc_ns - allocate, initialize and return a new namespace
+ * @prefix: parent namespace name (MAYBE NULL)
+ * @name: a preallocated name  (NOT NULL)
+ *
+ * Returns: refcounted namespace or NULL on failure.
+ */
+static struct aa_ns *alloc_ns(const char *prefix, const char *name)
+{
+	struct aa_ns *ns;
+
+	ns = kzalloc(sizeof(*ns), GFP_KERNEL);
+	AA_DEBUG("%s(%p)\n", __func__, ns);
+	if (!ns)
+		return NULL;
+	if (!aa_policy_init(&ns->base, prefix, name, GFP_KERNEL))
+		goto fail_ns;
+
+	INIT_LIST_HEAD(&ns->sub_ns);
+	INIT_LIST_HEAD(&ns->rawdata_list);
+	mutex_init(&ns->lock);
+	init_waitqueue_head(&ns->wait);
+
+	/* released by aa_free_ns() */
+	ns->unconfined = alloc_unconfined("unconfined");
+	if (!ns->unconfined)
+		goto fail_unconfined;
+	/* ns and ns->unconfined share ns->unconfined refcount */
+	ns->unconfined->ns = ns;
+
+	atomic_set(&ns->uniq_null, 0);
+
+	aa_labelset_init(&ns->labels);
+
+	return ns;
+
+fail_unconfined:
+	aa_policy_destroy(&ns->base);
+fail_ns:
+	kfree_sensitive(ns);
+	return NULL;
+}
+
+/**
+ * aa_free_ns - free a profile namespace
+ * @ns: the namespace to free  (MAYBE NULL)
+ *
+ * Requires: All references to the namespace must have been put, if the
+ *           namespace was referenced by a profile confining a task,
+ */
+void aa_free_ns(struct aa_ns *ns)
+{
+	if (!ns)
+		return;
+
+	aa_policy_destroy(&ns->base);
+	aa_labelset_destroy(&ns->labels);
+	aa_put_ns(ns->parent);
+
+	ns->unconfined->ns = NULL;
+	aa_free_profile(ns->unconfined);
+	kfree_sensitive(ns);
+}
+
+/**
+ * aa_findn_ns  -  look up a profile namespace on the namespace list
+ * @root: namespace to search in  (NOT NULL)
+ * @name: name of namespace to find  (NOT NULL)
+ * @n: length of @name
+ *
+ * Returns: a refcounted namespace on the list, or NULL if no namespace
+ *          called @name exists.
+ *
+ * refcount released by caller
+ */
+struct aa_ns *aa_findn_ns(struct aa_ns *root, const char *name, size_t n)
+{
+	struct aa_ns *ns = NULL;
+
+	rcu_read_lock();
+	ns = aa_get_ns(__aa_findn_ns(&root->sub_ns, name, n));
+	rcu_read_unlock();
+
+	return ns;
+}
+
+/**
+ * aa_find_ns  -  look up a profile namespace on the namespace list
+ * @root: namespace to search in  (NOT NULL)
+ * @name: name of namespace to find  (NOT NULL)
+ *
+ * Returns: a refcounted namespace on the list, or NULL if no namespace
+ *          called @name exists.
+ *
+ * refcount released by caller
+ */
+struct aa_ns *aa_find_ns(struct aa_ns *root, const char *name)
+{
+	return aa_findn_ns(root, name, strlen(name));
+}
+
+/**
+ * __aa_lookupn_ns - lookup the namespace matching @hname
+ * @view: namespace to search in  (NOT NULL)
+ * @hname: hierarchical ns name  (NOT NULL)
+ * @n: length of @hname
+ *
+ * Requires: rcu_read_lock be held
+ *
+ * Returns: unrefcounted ns pointer or NULL if not found
+ *
+ * Do a relative name lookup, recursing through profile tree.
+ */
+struct aa_ns *__aa_lookupn_ns(struct aa_ns *view, const char *hname, size_t n)
+{
+	struct aa_ns *ns = view;
+	const char *split;
+
+	for (split = strnstr(hname, "//", n); split;
+	     split = strnstr(hname, "//", n)) {
+		ns = __aa_findn_ns(&ns->sub_ns, hname, split - hname);
+		if (!ns)
+			return NULL;
+
+		n -= split + 2 - hname;
+		hname = split + 2;
+	}
+
+	if (n)
+		return __aa_findn_ns(&ns->sub_ns, hname, n);
+	return NULL;
+}
+
+/**
+ * aa_lookupn_ns  -  look up a policy namespace relative to @view
+ * @view: namespace to search in  (NOT NULL)
+ * @name: name of namespace to find  (NOT NULL)
+ * @n: length of @name
+ *
+ * Returns: a refcounted namespace on the list, or NULL if no namespace
+ *          called @name exists.
+ *
+ * refcount released by caller
+ */
+struct aa_ns *aa_lookupn_ns(struct aa_ns *view, const char *name, size_t n)
+{
+	struct aa_ns *ns = NULL;
+
+	rcu_read_lock();
+	ns = aa_get_ns(__aa_lookupn_ns(view, name, n));
+	rcu_read_unlock();
+
+	return ns;
+}
+
+static struct aa_ns *__aa_create_ns(struct aa_ns *parent, const char *name,
+				    struct dentry *dir)
+{
+	struct aa_ns *ns;
+	int error;
+
+	AA_BUG(!parent);
+	AA_BUG(!name);
+	AA_BUG(!mutex_is_locked(&parent->lock));
+
+	ns = alloc_ns(parent->base.hname, name);
+	if (!ns)
+		return ERR_PTR(-ENOMEM);
+	ns->level = parent->level + 1;
+	mutex_lock_nested(&ns->lock, ns->level);
+	error = __aafs_ns_mkdir(ns, ns_subns_dir(parent), name, dir);
+	if (error) {
+		AA_ERROR("Failed to create interface for ns %s\n",
+			 ns->base.name);
+		mutex_unlock(&ns->lock);
+		aa_free_ns(ns);
+		return ERR_PTR(error);
+	}
+	ns->parent = aa_get_ns(parent);
+	list_add_rcu(&ns->base.list, &parent->sub_ns);
+	/* add list ref */
+	aa_get_ns(ns);
+	mutex_unlock(&ns->lock);
+
+	return ns;
+}
+
+/**
+ * __aa_find_or_create_ns - create an ns, fail if it already exists
+ * @parent: the parent of the namespace being created
+ * @name: the name of the namespace
+ * @dir: if not null the dir to put the ns entries in
+ *
+ * Returns: the a refcounted ns that has been add or an ERR_PTR
+ */
+struct aa_ns *__aa_find_or_create_ns(struct aa_ns *parent, const char *name,
+				     struct dentry *dir)
+{
+	struct aa_ns *ns;
+
+	AA_BUG(!mutex_is_locked(&parent->lock));
+
+	/* try and find the specified ns */
+	/* released by caller */
+	ns = aa_get_ns(__aa_find_ns(&parent->sub_ns, name));
+	if (!ns)
+		ns = __aa_create_ns(parent, name, dir);
+	else
+		ns = ERR_PTR(-EEXIST);
+
+	/* return ref */
+	return ns;
+}
+
+/**
+ * aa_prepare_ns - find an existing or create a new namespace of @name
+ * @parent: ns to treat as parent
+ * @name: the namespace to find or add  (NOT NULL)
+ *
+ * Returns: refcounted namespace or PTR_ERR if failed to create one
+ */
+struct aa_ns *aa_prepare_ns(struct aa_ns *parent, const char *name)
+{
+	struct aa_ns *ns;
+
+	mutex_lock_nested(&parent->lock, parent->level);
+	/* try and find the specified ns and if it doesn't exist create it */
+	/* released by caller */
+	ns = aa_get_ns(__aa_find_ns(&parent->sub_ns, name));
+	if (!ns)
+		ns = __aa_create_ns(parent, name, NULL);
+	mutex_unlock(&parent->lock);
+
+	/* return ref */
+	return ns;
+}
+
+static void __ns_list_release(struct list_head *head);
+
+/**
+ * destroy_ns - remove everything contained by @ns
+ * @ns: namespace to have it contents removed  (NOT NULL)
+ */
+static void destroy_ns(struct aa_ns *ns)
+{
+	if (!ns)
+		return;
+
+	mutex_lock_nested(&ns->lock, ns->level);
+	/* release all profiles in this namespace */
+	__aa_profile_list_release(&ns->base.profiles);
+
+	/* release all sub namespaces */
+	__ns_list_release(&ns->sub_ns);
+
+	if (ns->parent) {
+		unsigned long flags;
+
+		write_lock_irqsave(&ns->labels.lock, flags);
+		__aa_proxy_redirect(ns_unconfined(ns),
+				    ns_unconfined(ns->parent));
+		write_unlock_irqrestore(&ns->labels.lock, flags);
+	}
+	__aafs_ns_rmdir(ns);
+	mutex_unlock(&ns->lock);
+}
+
+/**
+ * __aa_remove_ns - remove a namespace and all its children
+ * @ns: namespace to be removed  (NOT NULL)
+ *
+ * Requires: ns->parent->lock be held and ns removed from parent.
+ */
+void __aa_remove_ns(struct aa_ns *ns)
+{
+	/* remove ns from namespace list */
+	list_del_rcu(&ns->base.list);
+	destroy_ns(ns);
+	aa_put_ns(ns);
+}
+
+/**
+ * __ns_list_release - remove all profile namespaces on the list put refs
+ * @head: list of profile namespaces  (NOT NULL)
+ *
+ * Requires: namespace lock be held
+ */
+static void __ns_list_release(struct list_head *head)
+{
+	struct aa_ns *ns, *tmp;
+
+	list_for_each_entry_safe(ns, tmp, head, base.list)
+		__aa_remove_ns(ns);
+
+}
+
+/**
+ * aa_alloc_root_ns - allocate the root profile namespace
+ *
+ * Returns: %0 on success else error
+ *
+ */
+int __init aa_alloc_root_ns(void)
+{
+	struct aa_profile *kernel_p;
+
+	/* released by aa_free_root_ns - used as list ref*/
+	root_ns = alloc_ns(NULL, "root");
+	if (!root_ns)
+		return -ENOMEM;
+
+	kernel_p = alloc_unconfined("kernel_t");
+	if (!kernel_p) {
+		destroy_ns(root_ns);
+		aa_free_ns(root_ns);
+		return -ENOMEM;
+	}
+	kernel_t = &kernel_p->label;
+	root_ns->unconfined->ns = aa_get_ns(root_ns);
+
+	return 0;
+}
+
+ /**
+  * aa_free_root_ns - free the root profile namespace
+  */
+void __init aa_free_root_ns(void)
+{
+	 struct aa_ns *ns = root_ns;
+
+	 root_ns = NULL;
+
+	 aa_label_free(kernel_t);
+	 destroy_ns(ns);
+	 aa_put_ns(ns);
+}