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, 155 insertions, 0 deletions

diff --git a/net/atm/lec.h b/net/atm/lec.h
new file mode 100644
index 000000000..be0e2667b
--- /dev/null
+++ b/net/atm/lec.h
@@ -0,0 +1,155 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Lan Emulation client header file
+ *
+ * Marko Kiiskila <mkiiskila@yahoo.com>
+ */
+
+#ifndef _LEC_H_
+#define _LEC_H_
+
+#include <linux/atmdev.h>
+#include <linux/netdevice.h>
+#include <linux/atmlec.h>
+
+#define LEC_HEADER_LEN 16
+
+struct lecdatahdr_8023 {
+	__be16 le_header;
+	unsigned char h_dest[ETH_ALEN];
+	unsigned char h_source[ETH_ALEN];
+	__be16 h_type;
+};
+
+struct lecdatahdr_8025 {
+	__be16 le_header;
+	unsigned char ac_pad;
+	unsigned char fc;
+	unsigned char h_dest[ETH_ALEN];
+	unsigned char h_source[ETH_ALEN];
+};
+
+#define LEC_MINIMUM_8023_SIZE   62
+#define LEC_MINIMUM_8025_SIZE   16
+
+/*
+ * Operations that LANE2 capable device can do. Two first functions
+ * are used to make the device do things. See spec 3.1.3 and 3.1.4.
+ *
+ * The third function is intended for the MPOA component sitting on
+ * top of the LANE device. The MPOA component assigns it's own function
+ * to (*associate_indicator)() and the LANE device will use that
+ * function to tell about TLVs it sees floating through.
+ *
+ */
+struct lane2_ops {
+	int (*resolve) (struct net_device *dev, const u8 *dst_mac, int force,
+			u8 **tlvs, u32 *sizeoftlvs);
+	int (*associate_req) (struct net_device *dev, const u8 *lan_dst,
+			      const u8 *tlvs, u32 sizeoftlvs);
+	void (*associate_indicator) (struct net_device *dev, const u8 *mac_addr,
+				     const u8 *tlvs, u32 sizeoftlvs);
+};
+
+/*
+ * ATM LAN Emulation supports both LLC & Dix Ethernet EtherType
+ * frames.
+ *
+ * 1. Dix Ethernet EtherType frames encoded by placing EtherType
+ *    field in h_type field. Data follows immediately after header.
+ * 2. LLC Data frames whose total length, including LLC field and data,
+ *    but not padding required to meet the minimum data frame length,
+ *    is less than ETH_P_802_3_MIN MUST be encoded by placing that length
+ *    in the h_type field. The LLC field follows header immediately.
+ * 3. LLC data frames longer than this maximum MUST be encoded by placing
+ *    the value 0 in the h_type field.
+ *
+ */
+
+/* Hash table size */
+#define LEC_ARP_TABLE_SIZE 16
+
+struct lec_priv {
+	unsigned short lecid;			/* Lecid of this client */
+	struct hlist_head lec_arp_empty_ones;
+						/* Used for storing VCC's that don't have a MAC address attached yet */
+	struct hlist_head lec_arp_tables[LEC_ARP_TABLE_SIZE];
+						/* Actual LE ARP table */
+	struct hlist_head lec_no_forward;
+						/*
+						 * Used for storing VCC's (and forward packets from) which are to
+						 * age out by not using them to forward packets.
+						 * This is because to some LE clients there will be 2 VCCs. Only
+						 * one of them gets used.
+						 */
+	struct hlist_head mcast_fwds;
+						/*
+						 * With LANEv2 it is possible that BUS (or a special multicast server)
+						 * establishes multiple Multicast Forward VCCs to us. This list
+						 * collects all those VCCs. LANEv1 client has only one item in this
+						 * list. These entries are not aged out.
+						 */
+	spinlock_t lec_arp_lock;
+	struct atm_vcc *mcast_vcc;		/* Default Multicast Send VCC */
+	struct atm_vcc *lecd;
+	struct delayed_work lec_arp_work;	/* C10 */
+	unsigned int maximum_unknown_frame_count;
+						/*
+						 * Within the period of time defined by this variable, the client will send
+						 * no more than C10 frames to BUS for a given unicast destination. (C11)
+						 */
+	unsigned long max_unknown_frame_time;
+						/*
+						 * If no traffic has been sent in this vcc for this period of time,
+						 * vcc will be torn down (C12)
+						 */
+	unsigned long vcc_timeout_period;
+						/*
+						 * An LE Client MUST not retry an LE_ARP_REQUEST for a
+						 * given frame's LAN Destination more than maximum retry count times,
+						 * after the first LEC_ARP_REQUEST (C13)
+						 */
+	unsigned short max_retry_count;
+						/*
+						 * Max time the client will maintain an entry in its arp cache in
+						 * absence of a verification of that relationship (C17)
+						 */
+	unsigned long aging_time;
+						/*
+						 * Max time the client will maintain an entry in cache when
+						 * topology change flag is true (C18)
+						 */
+	unsigned long forward_delay_time;	/* Topology change flag (C19) */
+	int topology_change;
+						/*
+						 * Max time the client expects an LE_ARP_REQUEST/LE_ARP_RESPONSE
+						 * cycle to take (C20)
+						 */
+	unsigned long arp_response_time;
+						/*
+						 * Time limit ot wait to receive an LE_FLUSH_RESPONSE after the
+						 * LE_FLUSH_REQUEST has been sent before taking recover action. (C21)
+						 */
+	unsigned long flush_timeout;
+						/* The time since sending a frame to the bus after which the
+						 * LE Client may assume that the frame has been either discarded or
+						 * delivered to the recipient (C22)
+						 */
+	unsigned long path_switching_delay;
+
+	u8 *tlvs;				/* LANE2: TLVs are new */
+	u32 sizeoftlvs;				/* The size of the tlv array in bytes */
+	int lane_version;			/* LANE2 */
+	int itfnum;				/* e.g. 2 for lec2, 5 for lec5 */
+	struct lane2_ops *lane2_ops;		/* can be NULL for LANE v1 */
+	int is_proxy;				/* bridge between ATM and Ethernet */
+};
+
+struct lec_vcc_priv {
+	void (*old_pop) (struct atm_vcc *vcc, struct sk_buff *skb);
+	int xoff;
+};
+
+#define LEC_VCC_PRIV(vcc)	((struct lec_vcc_priv *)((vcc)->user_back))
+
+#endif				/* _LEC_H_ */