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, 241 insertions, 0 deletions

diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
new file mode 100644
index 000000000..db762e35a
--- /dev/null
+++ b/include/net/netns/ipv4.h
@@ -0,0 +1,241 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * ipv4 in net namespaces
+ */
+
+#ifndef __NETNS_IPV4_H__
+#define __NETNS_IPV4_H__
+
+#include <linux/uidgid.h>
+#include <net/inet_frag.h>
+#include <linux/rcupdate.h>
+#include <linux/seqlock.h>
+#include <linux/siphash.h>
+
+struct ctl_table_header;
+struct ipv4_devconf;
+struct fib_rules_ops;
+struct hlist_head;
+struct fib_table;
+struct sock;
+struct local_ports {
+	seqlock_t	lock;
+	int		range[2];
+	bool		warned;
+};
+
+struct ping_group_range {
+	seqlock_t	lock;
+	kgid_t		range[2];
+};
+
+struct inet_hashinfo;
+
+struct inet_timewait_death_row {
+	refcount_t		tw_refcount;
+
+	/* Padding to avoid false sharing, tw_refcount can be often written */
+	struct inet_hashinfo 	*hashinfo ____cacheline_aligned_in_smp;
+	int			sysctl_max_tw_buckets;
+};
+
+struct tcp_fastopen_context;
+
+struct netns_ipv4 {
+	struct inet_timewait_death_row tcp_death_row;
+	struct udp_table *udp_table;
+
+#ifdef CONFIG_SYSCTL
+	struct ctl_table_header	*forw_hdr;
+	struct ctl_table_header	*frags_hdr;
+	struct ctl_table_header	*ipv4_hdr;
+	struct ctl_table_header *route_hdr;
+	struct ctl_table_header *xfrm4_hdr;
+#endif
+	struct ipv4_devconf	*devconf_all;
+	struct ipv4_devconf	*devconf_dflt;
+	struct ip_ra_chain __rcu *ra_chain;
+	struct mutex		ra_mutex;
+#ifdef CONFIG_IP_MULTIPLE_TABLES
+	struct fib_rules_ops	*rules_ops;
+	struct fib_table __rcu	*fib_main;
+	struct fib_table __rcu	*fib_default;
+	unsigned int		fib_rules_require_fldissect;
+	bool			fib_has_custom_rules;
+#endif
+	bool			fib_has_custom_local_routes;
+	bool			fib_offload_disabled;
+#ifdef CONFIG_IP_ROUTE_CLASSID
+	atomic_t		fib_num_tclassid_users;
+#endif
+	struct hlist_head	*fib_table_hash;
+	struct sock		*fibnl;
+
+	struct sock		*mc_autojoin_sk;
+
+	struct inet_peer_base	*peers;
+	struct fqdir		*fqdir;
+
+	u8 sysctl_icmp_echo_ignore_all;
+	u8 sysctl_icmp_echo_enable_probe;
+	u8 sysctl_icmp_echo_ignore_broadcasts;
+	u8 sysctl_icmp_ignore_bogus_error_responses;
+	u8 sysctl_icmp_errors_use_inbound_ifaddr;
+	int sysctl_icmp_ratelimit;
+	int sysctl_icmp_ratemask;
+
+	u32 ip_rt_min_pmtu;
+	int ip_rt_mtu_expires;
+	int ip_rt_min_advmss;
+
+	struct local_ports ip_local_ports;
+
+	u8 sysctl_tcp_ecn;
+	u8 sysctl_tcp_ecn_fallback;
+
+	u8 sysctl_ip_default_ttl;
+	u8 sysctl_ip_no_pmtu_disc;
+	u8 sysctl_ip_fwd_use_pmtu;
+	u8 sysctl_ip_fwd_update_priority;
+	u8 sysctl_ip_nonlocal_bind;
+	u8 sysctl_ip_autobind_reuse;
+	/* Shall we try to damage output packets if routing dev changes? */
+	u8 sysctl_ip_dynaddr;
+	u8 sysctl_ip_early_demux;
+#ifdef CONFIG_NET_L3_MASTER_DEV
+	u8 sysctl_raw_l3mdev_accept;
+#endif
+	u8 sysctl_tcp_early_demux;
+	u8 sysctl_udp_early_demux;
+
+	u8 sysctl_nexthop_compat_mode;
+
+	u8 sysctl_fwmark_reflect;
+	u8 sysctl_tcp_fwmark_accept;
+#ifdef CONFIG_NET_L3_MASTER_DEV
+	u8 sysctl_tcp_l3mdev_accept;
+#endif
+	u8 sysctl_tcp_mtu_probing;
+	int sysctl_tcp_mtu_probe_floor;
+	int sysctl_tcp_base_mss;
+	int sysctl_tcp_min_snd_mss;
+	int sysctl_tcp_probe_threshold;
+	u32 sysctl_tcp_probe_interval;
+
+	int sysctl_tcp_keepalive_time;
+	int sysctl_tcp_keepalive_intvl;
+	u8 sysctl_tcp_keepalive_probes;
+
+	u8 sysctl_tcp_syn_retries;
+	u8 sysctl_tcp_synack_retries;
+	u8 sysctl_tcp_syncookies;
+	u8 sysctl_tcp_migrate_req;
+	u8 sysctl_tcp_comp_sack_nr;
+	int sysctl_tcp_reordering;
+	u8 sysctl_tcp_retries1;
+	u8 sysctl_tcp_retries2;
+	u8 sysctl_tcp_orphan_retries;
+	u8 sysctl_tcp_tw_reuse;
+	int sysctl_tcp_fin_timeout;
+	unsigned int sysctl_tcp_notsent_lowat;
+	u8 sysctl_tcp_sack;
+	u8 sysctl_tcp_window_scaling;
+	u8 sysctl_tcp_timestamps;
+	u8 sysctl_tcp_early_retrans;
+	u8 sysctl_tcp_recovery;
+	u8 sysctl_tcp_thin_linear_timeouts;
+	u8 sysctl_tcp_slow_start_after_idle;
+	u8 sysctl_tcp_retrans_collapse;
+	u8 sysctl_tcp_stdurg;
+	u8 sysctl_tcp_rfc1337;
+	u8 sysctl_tcp_abort_on_overflow;
+	u8 sysctl_tcp_fack; /* obsolete */
+	int sysctl_tcp_max_reordering;
+	int sysctl_tcp_adv_win_scale;
+	u8 sysctl_tcp_dsack;
+	u8 sysctl_tcp_app_win;
+	u8 sysctl_tcp_frto;
+	u8 sysctl_tcp_nometrics_save;
+	u8 sysctl_tcp_no_ssthresh_metrics_save;
+	u8 sysctl_tcp_moderate_rcvbuf;
+	u8 sysctl_tcp_tso_win_divisor;
+	u8 sysctl_tcp_workaround_signed_windows;
+	int sysctl_tcp_limit_output_bytes;
+	int sysctl_tcp_challenge_ack_limit;
+	int sysctl_tcp_min_rtt_wlen;
+	u8 sysctl_tcp_min_tso_segs;
+	u8 sysctl_tcp_tso_rtt_log;
+	u8 sysctl_tcp_autocorking;
+	u8 sysctl_tcp_reflect_tos;
+	int sysctl_tcp_invalid_ratelimit;
+	int sysctl_tcp_pacing_ss_ratio;
+	int sysctl_tcp_pacing_ca_ratio;
+	int sysctl_tcp_wmem[3];
+	int sysctl_tcp_rmem[3];
+	unsigned int sysctl_tcp_child_ehash_entries;
+	unsigned long sysctl_tcp_comp_sack_delay_ns;
+	unsigned long sysctl_tcp_comp_sack_slack_ns;
+	int sysctl_max_syn_backlog;
+	int sysctl_tcp_fastopen;
+	const struct tcp_congestion_ops __rcu  *tcp_congestion_control;
+	struct tcp_fastopen_context __rcu *tcp_fastopen_ctx;
+	unsigned int sysctl_tcp_fastopen_blackhole_timeout;
+	atomic_t tfo_active_disable_times;
+	unsigned long tfo_active_disable_stamp;
+	u32 tcp_challenge_timestamp;
+	u32 tcp_challenge_count;
+	u8 sysctl_tcp_plb_enabled;
+	u8 sysctl_tcp_plb_idle_rehash_rounds;
+	u8 sysctl_tcp_plb_rehash_rounds;
+	u8 sysctl_tcp_plb_suspend_rto_sec;
+	int sysctl_tcp_plb_cong_thresh;
+
+	int sysctl_udp_wmem_min;
+	int sysctl_udp_rmem_min;
+
+	u8 sysctl_fib_notify_on_flag_change;
+
+#ifdef CONFIG_NET_L3_MASTER_DEV
+	u8 sysctl_udp_l3mdev_accept;
+#endif
+
+	u8 sysctl_igmp_llm_reports;
+	int sysctl_igmp_max_memberships;
+	int sysctl_igmp_max_msf;
+	int sysctl_igmp_qrv;
+
+	struct ping_group_range ping_group_range;
+
+	atomic_t dev_addr_genid;
+
+	unsigned int sysctl_udp_child_hash_entries;
+
+#ifdef CONFIG_SYSCTL
+	unsigned long *sysctl_local_reserved_ports;
+	int sysctl_ip_prot_sock;
+#endif
+
+#ifdef CONFIG_IP_MROUTE
+#ifndef CONFIG_IP_MROUTE_MULTIPLE_TABLES
+	struct mr_table		*mrt;
+#else
+	struct list_head	mr_tables;
+	struct fib_rules_ops	*mr_rules_ops;
+#endif
+#endif
+#ifdef CONFIG_IP_ROUTE_MULTIPATH
+	u32 sysctl_fib_multipath_hash_fields;
+	u8 sysctl_fib_multipath_use_neigh;
+	u8 sysctl_fib_multipath_hash_policy;
+#endif
+
+	struct fib_notifier_ops	*notifier_ops;
+	unsigned int	fib_seq;	/* protected by rtnl_mutex */
+
+	struct fib_notifier_ops	*ipmr_notifier_ops;
+	unsigned int	ipmr_seq;	/* protected by rtnl_mutex */
+
+	atomic_t	rt_genid;
+	siphash_key_t	ip_id_key;
+};
+#endif