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, 238 insertions, 0 deletions

diff --git a/security/selinux/netport.c b/security/selinux/netport.c
new file mode 100644
index 000000000..8eec6347c
--- /dev/null
+++ b/security/selinux/netport.c
@@ -0,0 +1,238 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Network port table
+ *
+ * SELinux must keep a mapping of network ports to labels/SIDs.  This
+ * mapping is maintained as part of the normal policy but a fast cache is
+ * needed to reduce the lookup overhead.
+ *
+ * Author: Paul Moore <paul@paul-moore.com>
+ *
+ * This code is heavily based on the "netif" concept originally developed by
+ * James Morris <jmorris@redhat.com>
+ *   (see security/selinux/netif.c for more information)
+ */
+
+/*
+ * (c) Copyright Hewlett-Packard Development Company, L.P., 2008
+ */
+
+#include <linux/types.h>
+#include <linux/rcupdate.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/in.h>
+#include <linux/in6.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <net/ip.h>
+#include <net/ipv6.h>
+
+#include "netport.h"
+#include "objsec.h"
+
+#define SEL_NETPORT_HASH_SIZE       256
+#define SEL_NETPORT_HASH_BKT_LIMIT   16
+
+struct sel_netport_bkt {
+	int size;
+	struct list_head list;
+};
+
+struct sel_netport {
+	struct netport_security_struct psec;
+
+	struct list_head list;
+	struct rcu_head rcu;
+};
+
+/* NOTE: we are using a combined hash table for both IPv4 and IPv6, the reason
+ * for this is that I suspect most users will not make heavy use of both
+ * address families at the same time so one table will usually end up wasted,
+ * if this becomes a problem we can always add a hash table for each address
+ * family later */
+
+static DEFINE_SPINLOCK(sel_netport_lock);
+static struct sel_netport_bkt sel_netport_hash[SEL_NETPORT_HASH_SIZE];
+
+/**
+ * sel_netport_hashfn - Hashing function for the port table
+ * @pnum: port number
+ *
+ * Description:
+ * This is the hashing function for the port table, it returns the bucket
+ * number for the given port.
+ *
+ */
+static unsigned int sel_netport_hashfn(u16 pnum)
+{
+	return (pnum & (SEL_NETPORT_HASH_SIZE - 1));
+}
+
+/**
+ * sel_netport_find - Search for a port record
+ * @protocol: protocol
+ * @pnum: port
+ *
+ * Description:
+ * Search the network port table and return the matching record.  If an entry
+ * can not be found in the table return NULL.
+ *
+ */
+static struct sel_netport *sel_netport_find(u8 protocol, u16 pnum)
+{
+	unsigned int idx;
+	struct sel_netport *port;
+
+	idx = sel_netport_hashfn(pnum);
+	list_for_each_entry_rcu(port, &sel_netport_hash[idx].list, list)
+		if (port->psec.port == pnum && port->psec.protocol == protocol)
+			return port;
+
+	return NULL;
+}
+
+/**
+ * sel_netport_insert - Insert a new port into the table
+ * @port: the new port record
+ *
+ * Description:
+ * Add a new port record to the network address hash table.
+ *
+ */
+static void sel_netport_insert(struct sel_netport *port)
+{
+	unsigned int idx;
+
+	/* we need to impose a limit on the growth of the hash table so check
+	 * this bucket to make sure it is within the specified bounds */
+	idx = sel_netport_hashfn(port->psec.port);
+	list_add_rcu(&port->list, &sel_netport_hash[idx].list);
+	if (sel_netport_hash[idx].size == SEL_NETPORT_HASH_BKT_LIMIT) {
+		struct sel_netport *tail;
+		tail = list_entry(
+			rcu_dereference_protected(
+				list_tail_rcu(&sel_netport_hash[idx].list),
+				lockdep_is_held(&sel_netport_lock)),
+			struct sel_netport, list);
+		list_del_rcu(&tail->list);
+		kfree_rcu(tail, rcu);
+	} else
+		sel_netport_hash[idx].size++;
+}
+
+/**
+ * sel_netport_sid_slow - Lookup the SID of a network address using the policy
+ * @protocol: protocol
+ * @pnum: port
+ * @sid: port SID
+ *
+ * Description:
+ * This function determines the SID of a network port by querying the security
+ * policy.  The result is added to the network port table to speedup future
+ * queries.  Returns zero on success, negative values on failure.
+ *
+ */
+static int sel_netport_sid_slow(u8 protocol, u16 pnum, u32 *sid)
+{
+	int ret;
+	struct sel_netport *port;
+	struct sel_netport *new;
+
+	spin_lock_bh(&sel_netport_lock);
+	port = sel_netport_find(protocol, pnum);
+	if (port != NULL) {
+		*sid = port->psec.sid;
+		spin_unlock_bh(&sel_netport_lock);
+		return 0;
+	}
+
+	ret = security_port_sid(&selinux_state, protocol, pnum, sid);
+	if (ret != 0)
+		goto out;
+	new = kzalloc(sizeof(*new), GFP_ATOMIC);
+	if (new) {
+		new->psec.port = pnum;
+		new->psec.protocol = protocol;
+		new->psec.sid = *sid;
+		sel_netport_insert(new);
+	}
+
+out:
+	spin_unlock_bh(&sel_netport_lock);
+	if (unlikely(ret))
+		pr_warn("SELinux: failure in %s(), unable to determine network port label\n",
+			__func__);
+	return ret;
+}
+
+/**
+ * sel_netport_sid - Lookup the SID of a network port
+ * @protocol: protocol
+ * @pnum: port
+ * @sid: port SID
+ *
+ * Description:
+ * This function determines the SID of a network port using the fastest method
+ * possible.  First the port table is queried, but if an entry can't be found
+ * then the policy is queried and the result is added to the table to speedup
+ * future queries.  Returns zero on success, negative values on failure.
+ *
+ */
+int sel_netport_sid(u8 protocol, u16 pnum, u32 *sid)
+{
+	struct sel_netport *port;
+
+	rcu_read_lock();
+	port = sel_netport_find(protocol, pnum);
+	if (port != NULL) {
+		*sid = port->psec.sid;
+		rcu_read_unlock();
+		return 0;
+	}
+	rcu_read_unlock();
+
+	return sel_netport_sid_slow(protocol, pnum, sid);
+}
+
+/**
+ * sel_netport_flush - Flush the entire network port table
+ *
+ * Description:
+ * Remove all entries from the network address table.
+ *
+ */
+void sel_netport_flush(void)
+{
+	unsigned int idx;
+	struct sel_netport *port, *port_tmp;
+
+	spin_lock_bh(&sel_netport_lock);
+	for (idx = 0; idx < SEL_NETPORT_HASH_SIZE; idx++) {
+		list_for_each_entry_safe(port, port_tmp,
+					 &sel_netport_hash[idx].list, list) {
+			list_del_rcu(&port->list);
+			kfree_rcu(port, rcu);
+		}
+		sel_netport_hash[idx].size = 0;
+	}
+	spin_unlock_bh(&sel_netport_lock);
+}
+
+static __init int sel_netport_init(void)
+{
+	int iter;
+
+	if (!selinux_enabled_boot)
+		return 0;
+
+	for (iter = 0; iter < SEL_NETPORT_HASH_SIZE; iter++) {
+		INIT_LIST_HEAD(&sel_netport_hash[iter].list);
+		sel_netport_hash[iter].size = 0;
+	}
+
+	return 0;
+}
+
+__initcall(sel_netport_init);