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, 357 insertions, 0 deletions

diff --git a/net/ipv6/sysctl_net_ipv6.c b/net/ipv6/sysctl_net_ipv6.c
new file mode 100644
index 000000000..94a0a294c
--- /dev/null
+++ b/net/ipv6/sysctl_net_ipv6.c
@@ -0,0 +1,357 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * sysctl_net_ipv6.c: sysctl interface to net IPV6 subsystem.
+ *
+ * Changes:
+ * YOSHIFUJI Hideaki @USAGI:	added icmp sysctl table.
+ */
+
+#include <linux/mm.h>
+#include <linux/sysctl.h>
+#include <linux/in6.h>
+#include <linux/ipv6.h>
+#include <linux/slab.h>
+#include <linux/export.h>
+#include <net/ndisc.h>
+#include <net/ipv6.h>
+#include <net/addrconf.h>
+#include <net/inet_frag.h>
+#include <net/netevent.h>
+#include <net/ip_fib.h>
+#ifdef CONFIG_NETLABEL
+#include <net/calipso.h>
+#endif
+#include <linux/ioam6.h>
+
+static int flowlabel_reflect_max = 0x7;
+static int auto_flowlabels_max = IP6_AUTO_FLOW_LABEL_MAX;
+static u32 rt6_multipath_hash_fields_all_mask =
+	FIB_MULTIPATH_HASH_FIELD_ALL_MASK;
+static u32 ioam6_id_max = IOAM6_DEFAULT_ID;
+static u64 ioam6_id_wide_max = IOAM6_DEFAULT_ID_WIDE;
+
+static int proc_rt6_multipath_hash_policy(struct ctl_table *table, int write,
+					  void *buffer, size_t *lenp, loff_t *ppos)
+{
+	struct net *net;
+	int ret;
+
+	net = container_of(table->data, struct net,
+			   ipv6.sysctl.multipath_hash_policy);
+	ret = proc_dou8vec_minmax(table, write, buffer, lenp, ppos);
+	if (write && ret == 0)
+		call_netevent_notifiers(NETEVENT_IPV6_MPATH_HASH_UPDATE, net);
+
+	return ret;
+}
+
+static int
+proc_rt6_multipath_hash_fields(struct ctl_table *table, int write, void *buffer,
+			       size_t *lenp, loff_t *ppos)
+{
+	struct net *net;
+	int ret;
+
+	net = container_of(table->data, struct net,
+			   ipv6.sysctl.multipath_hash_fields);
+	ret = proc_douintvec_minmax(table, write, buffer, lenp, ppos);
+	if (write && ret == 0)
+		call_netevent_notifiers(NETEVENT_IPV6_MPATH_HASH_UPDATE, net);
+
+	return ret;
+}
+
+static struct ctl_table ipv6_table_template[] = {
+	{
+		.procname	= "bindv6only",
+		.data		= &init_net.ipv6.sysctl.bindv6only,
+		.maxlen		= sizeof(u8),
+		.mode		= 0644,
+		.proc_handler	= proc_dou8vec_minmax,
+	},
+	{
+		.procname	= "anycast_src_echo_reply",
+		.data		= &init_net.ipv6.sysctl.anycast_src_echo_reply,
+		.maxlen		= sizeof(u8),
+		.mode		= 0644,
+		.proc_handler	= proc_dou8vec_minmax,
+	},
+	{
+		.procname	= "flowlabel_consistency",
+		.data		= &init_net.ipv6.sysctl.flowlabel_consistency,
+		.maxlen		= sizeof(u8),
+		.mode		= 0644,
+		.proc_handler	= proc_dou8vec_minmax,
+	},
+	{
+		.procname	= "auto_flowlabels",
+		.data		= &init_net.ipv6.sysctl.auto_flowlabels,
+		.maxlen		= sizeof(u8),
+		.mode		= 0644,
+		.proc_handler	= proc_dou8vec_minmax,
+		.extra2		= &auto_flowlabels_max
+	},
+	{
+		.procname	= "fwmark_reflect",
+		.data		= &init_net.ipv6.sysctl.fwmark_reflect,
+		.maxlen		= sizeof(u8),
+		.mode		= 0644,
+		.proc_handler	= proc_dou8vec_minmax,
+	},
+	{
+		.procname	= "idgen_retries",
+		.data		= &init_net.ipv6.sysctl.idgen_retries,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "idgen_delay",
+		.data		= &init_net.ipv6.sysctl.idgen_delay,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec_jiffies,
+	},
+	{
+		.procname	= "flowlabel_state_ranges",
+		.data		= &init_net.ipv6.sysctl.flowlabel_state_ranges,
+		.maxlen		= sizeof(u8),
+		.mode		= 0644,
+		.proc_handler	= proc_dou8vec_minmax,
+	},
+	{
+		.procname	= "ip_nonlocal_bind",
+		.data		= &init_net.ipv6.sysctl.ip_nonlocal_bind,
+		.maxlen		= sizeof(u8),
+		.mode		= 0644,
+		.proc_handler	= proc_dou8vec_minmax,
+	},
+	{
+		.procname	= "flowlabel_reflect",
+		.data		= &init_net.ipv6.sysctl.flowlabel_reflect,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec_minmax,
+		.extra1		= SYSCTL_ZERO,
+		.extra2		= &flowlabel_reflect_max,
+	},
+	{
+		.procname	= "max_dst_opts_number",
+		.data		= &init_net.ipv6.sysctl.max_dst_opts_cnt,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec
+	},
+	{
+		.procname	= "max_hbh_opts_number",
+		.data		= &init_net.ipv6.sysctl.max_hbh_opts_cnt,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec
+	},
+	{
+		.procname	= "max_dst_opts_length",
+		.data		= &init_net.ipv6.sysctl.max_dst_opts_len,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec
+	},
+	{
+		.procname	= "max_hbh_length",
+		.data		= &init_net.ipv6.sysctl.max_hbh_opts_len,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec
+	},
+	{
+		.procname	= "fib_multipath_hash_policy",
+		.data		= &init_net.ipv6.sysctl.multipath_hash_policy,
+		.maxlen		= sizeof(u8),
+		.mode		= 0644,
+		.proc_handler   = proc_rt6_multipath_hash_policy,
+		.extra1		= SYSCTL_ZERO,
+		.extra2		= SYSCTL_THREE,
+	},
+	{
+		.procname	= "fib_multipath_hash_fields",
+		.data		= &init_net.ipv6.sysctl.multipath_hash_fields,
+		.maxlen		= sizeof(u32),
+		.mode		= 0644,
+		.proc_handler	= proc_rt6_multipath_hash_fields,
+		.extra1		= SYSCTL_ONE,
+		.extra2		= &rt6_multipath_hash_fields_all_mask,
+	},
+	{
+		.procname	= "seg6_flowlabel",
+		.data		= &init_net.ipv6.sysctl.seg6_flowlabel,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec
+	},
+	{
+		.procname	= "fib_notify_on_flag_change",
+		.data		= &init_net.ipv6.sysctl.fib_notify_on_flag_change,
+		.maxlen		= sizeof(u8),
+		.mode		= 0644,
+		.proc_handler	= proc_dou8vec_minmax,
+		.extra1         = SYSCTL_ZERO,
+		.extra2         = SYSCTL_TWO,
+	},
+	{
+		.procname	= "ioam6_id",
+		.data		= &init_net.ipv6.sysctl.ioam6_id,
+		.maxlen		= sizeof(u32),
+		.mode		= 0644,
+		.proc_handler	= proc_douintvec_minmax,
+		.extra2		= &ioam6_id_max,
+	},
+	{
+		.procname	= "ioam6_id_wide",
+		.data		= &init_net.ipv6.sysctl.ioam6_id_wide,
+		.maxlen		= sizeof(u64),
+		.mode		= 0644,
+		.proc_handler	= proc_doulongvec_minmax,
+		.extra2		= &ioam6_id_wide_max,
+	},
+	{ }
+};
+
+static struct ctl_table ipv6_rotable[] = {
+	{
+		.procname	= "mld_max_msf",
+		.data		= &sysctl_mld_max_msf,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec
+	},
+	{
+		.procname	= "mld_qrv",
+		.data		= &sysctl_mld_qrv,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec_minmax,
+		.extra1		= SYSCTL_ONE
+	},
+#ifdef CONFIG_NETLABEL
+	{
+		.procname	= "calipso_cache_enable",
+		.data		= &calipso_cache_enabled,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "calipso_cache_bucket_size",
+		.data		= &calipso_cache_bucketsize,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+#endif /* CONFIG_NETLABEL */
+	{ }
+};
+
+static int __net_init ipv6_sysctl_net_init(struct net *net)
+{
+	struct ctl_table *ipv6_table;
+	struct ctl_table *ipv6_route_table;
+	struct ctl_table *ipv6_icmp_table;
+	int err, i;
+
+	err = -ENOMEM;
+	ipv6_table = kmemdup(ipv6_table_template, sizeof(ipv6_table_template),
+			     GFP_KERNEL);
+	if (!ipv6_table)
+		goto out;
+	/* Update the variables to point into the current struct net */
+	for (i = 0; i < ARRAY_SIZE(ipv6_table_template) - 1; i++)
+		ipv6_table[i].data += (void *)net - (void *)&init_net;
+
+	ipv6_route_table = ipv6_route_sysctl_init(net);
+	if (!ipv6_route_table)
+		goto out_ipv6_table;
+
+	ipv6_icmp_table = ipv6_icmp_sysctl_init(net);
+	if (!ipv6_icmp_table)
+		goto out_ipv6_route_table;
+
+	net->ipv6.sysctl.hdr = register_net_sysctl(net, "net/ipv6", ipv6_table);
+	if (!net->ipv6.sysctl.hdr)
+		goto out_ipv6_icmp_table;
+
+	net->ipv6.sysctl.route_hdr =
+		register_net_sysctl(net, "net/ipv6/route", ipv6_route_table);
+	if (!net->ipv6.sysctl.route_hdr)
+		goto out_unregister_ipv6_table;
+
+	net->ipv6.sysctl.icmp_hdr =
+		register_net_sysctl(net, "net/ipv6/icmp", ipv6_icmp_table);
+	if (!net->ipv6.sysctl.icmp_hdr)
+		goto out_unregister_route_table;
+
+	err = 0;
+out:
+	return err;
+out_unregister_route_table:
+	unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
+out_unregister_ipv6_table:
+	unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
+out_ipv6_icmp_table:
+	kfree(ipv6_icmp_table);
+out_ipv6_route_table:
+	kfree(ipv6_route_table);
+out_ipv6_table:
+	kfree(ipv6_table);
+	goto out;
+}
+
+static void __net_exit ipv6_sysctl_net_exit(struct net *net)
+{
+	struct ctl_table *ipv6_table;
+	struct ctl_table *ipv6_route_table;
+	struct ctl_table *ipv6_icmp_table;
+
+	ipv6_table = net->ipv6.sysctl.hdr->ctl_table_arg;
+	ipv6_route_table = net->ipv6.sysctl.route_hdr->ctl_table_arg;
+	ipv6_icmp_table = net->ipv6.sysctl.icmp_hdr->ctl_table_arg;
+
+	unregister_net_sysctl_table(net->ipv6.sysctl.icmp_hdr);
+	unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
+	unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
+
+	kfree(ipv6_table);
+	kfree(ipv6_route_table);
+	kfree(ipv6_icmp_table);
+}
+
+static struct pernet_operations ipv6_sysctl_net_ops = {
+	.init = ipv6_sysctl_net_init,
+	.exit = ipv6_sysctl_net_exit,
+};
+
+static struct ctl_table_header *ip6_header;
+
+int ipv6_sysctl_register(void)
+{
+	int err = -ENOMEM;
+
+	ip6_header = register_net_sysctl(&init_net, "net/ipv6", ipv6_rotable);
+	if (!ip6_header)
+		goto out;
+
+	err = register_pernet_subsys(&ipv6_sysctl_net_ops);
+	if (err)
+		goto err_pernet;
+out:
+	return err;
+
+err_pernet:
+	unregister_net_sysctl_table(ip6_header);
+	goto out;
+}
+
+void ipv6_sysctl_unregister(void)
+{
+	unregister_net_sysctl_table(ip6_header);
+	unregister_pernet_subsys(&ipv6_sysctl_net_ops);
+}