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, 244 insertions, 0 deletions

diff --git a/net/atm/signaling.c b/net/atm/signaling.c
new file mode 100644
index 000000000..5de06ab8e
--- /dev/null
+++ b/net/atm/signaling.c
@@ -0,0 +1,244 @@
+// SPDX-License-Identifier: GPL-2.0
+/* net/atm/signaling.c - ATM signaling */
+
+/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
+
+#include <linux/errno.h>	/* error codes */
+#include <linux/kernel.h>	/* printk */
+#include <linux/skbuff.h>
+#include <linux/wait.h>
+#include <linux/sched.h>	/* jiffies and HZ */
+#include <linux/atm.h>		/* ATM stuff */
+#include <linux/atmsap.h>
+#include <linux/atmsvc.h>
+#include <linux/atmdev.h>
+#include <linux/bitops.h>
+#include <linux/slab.h>
+
+#include "resources.h"
+#include "signaling.h"
+
+struct atm_vcc *sigd = NULL;
+
+static void sigd_put_skb(struct sk_buff *skb)
+{
+	if (!sigd) {
+		pr_debug("atmsvc: no signaling daemon\n");
+		kfree_skb(skb);
+		return;
+	}
+	atm_force_charge(sigd, skb->truesize);
+	skb_queue_tail(&sk_atm(sigd)->sk_receive_queue, skb);
+	sk_atm(sigd)->sk_data_ready(sk_atm(sigd));
+}
+
+static void modify_qos(struct atm_vcc *vcc, struct atmsvc_msg *msg)
+{
+	struct sk_buff *skb;
+
+	if (test_bit(ATM_VF_RELEASED, &vcc->flags) ||
+	    !test_bit(ATM_VF_READY, &vcc->flags))
+		return;
+	msg->type = as_error;
+	if (!vcc->dev->ops->change_qos)
+		msg->reply = -EOPNOTSUPP;
+	else {
+		/* should lock VCC */
+		msg->reply = vcc->dev->ops->change_qos(vcc, &msg->qos,
+						       msg->reply);
+		if (!msg->reply)
+			msg->type = as_okay;
+	}
+	/*
+	 * Should probably just turn around the old skb. But then, the buffer
+	 * space accounting needs to follow the change too. Maybe later.
+	 */
+	while (!(skb = alloc_skb(sizeof(struct atmsvc_msg), GFP_KERNEL)))
+		schedule();
+	*(struct atmsvc_msg *)skb_put(skb, sizeof(struct atmsvc_msg)) = *msg;
+	sigd_put_skb(skb);
+}
+
+static int sigd_send(struct atm_vcc *vcc, struct sk_buff *skb)
+{
+	struct atmsvc_msg *msg;
+	struct atm_vcc *session_vcc;
+	struct sock *sk;
+
+	msg = (struct atmsvc_msg *) skb->data;
+	WARN_ON(refcount_sub_and_test(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc));
+	vcc = *(struct atm_vcc **) &msg->vcc;
+	pr_debug("%d (0x%lx)\n", (int)msg->type, (unsigned long)vcc);
+	sk = sk_atm(vcc);
+
+	switch (msg->type) {
+	case as_okay:
+		sk->sk_err = -msg->reply;
+		clear_bit(ATM_VF_WAITING, &vcc->flags);
+		if (!*vcc->local.sas_addr.prv && !*vcc->local.sas_addr.pub) {
+			vcc->local.sas_family = AF_ATMSVC;
+			memcpy(vcc->local.sas_addr.prv,
+			       msg->local.sas_addr.prv, ATM_ESA_LEN);
+			memcpy(vcc->local.sas_addr.pub,
+			       msg->local.sas_addr.pub, ATM_E164_LEN + 1);
+		}
+		session_vcc = vcc->session ? vcc->session : vcc;
+		if (session_vcc->vpi || session_vcc->vci)
+			break;
+		session_vcc->itf = msg->pvc.sap_addr.itf;
+		session_vcc->vpi = msg->pvc.sap_addr.vpi;
+		session_vcc->vci = msg->pvc.sap_addr.vci;
+		if (session_vcc->vpi || session_vcc->vci)
+			session_vcc->qos = msg->qos;
+		break;
+	case as_error:
+		clear_bit(ATM_VF_REGIS, &vcc->flags);
+		clear_bit(ATM_VF_READY, &vcc->flags);
+		sk->sk_err = -msg->reply;
+		clear_bit(ATM_VF_WAITING, &vcc->flags);
+		break;
+	case as_indicate:
+		vcc = *(struct atm_vcc **)&msg->listen_vcc;
+		sk = sk_atm(vcc);
+		pr_debug("as_indicate!!!\n");
+		lock_sock(sk);
+		if (sk_acceptq_is_full(sk)) {
+			sigd_enq(NULL, as_reject, vcc, NULL, NULL);
+			dev_kfree_skb(skb);
+			goto as_indicate_complete;
+		}
+		sk_acceptq_added(sk);
+		skb_queue_tail(&sk->sk_receive_queue, skb);
+		pr_debug("waking sk_sleep(sk) 0x%p\n", sk_sleep(sk));
+		sk->sk_state_change(sk);
+as_indicate_complete:
+		release_sock(sk);
+		return 0;
+	case as_close:
+		set_bit(ATM_VF_RELEASED, &vcc->flags);
+		vcc_release_async(vcc, msg->reply);
+		goto out;
+	case as_modify:
+		modify_qos(vcc, msg);
+		break;
+	case as_addparty:
+	case as_dropparty:
+		sk->sk_err_soft = -msg->reply;
+					/* < 0 failure, otherwise ep_ref */
+		clear_bit(ATM_VF_WAITING, &vcc->flags);
+		break;
+	default:
+		pr_alert("bad message type %d\n", (int)msg->type);
+		return -EINVAL;
+	}
+	sk->sk_state_change(sk);
+out:
+	dev_kfree_skb(skb);
+	return 0;
+}
+
+void sigd_enq2(struct atm_vcc *vcc, enum atmsvc_msg_type type,
+	       struct atm_vcc *listen_vcc, const struct sockaddr_atmpvc *pvc,
+	       const struct sockaddr_atmsvc *svc, const struct atm_qos *qos,
+	       int reply)
+{
+	struct sk_buff *skb;
+	struct atmsvc_msg *msg;
+	static unsigned int session = 0;
+
+	pr_debug("%d (0x%p)\n", (int)type, vcc);
+	while (!(skb = alloc_skb(sizeof(struct atmsvc_msg), GFP_KERNEL)))
+		schedule();
+	msg = skb_put_zero(skb, sizeof(struct atmsvc_msg));
+	msg->type = type;
+	*(struct atm_vcc **) &msg->vcc = vcc;
+	*(struct atm_vcc **) &msg->listen_vcc = listen_vcc;
+	msg->reply = reply;
+	if (qos)
+		msg->qos = *qos;
+	if (vcc)
+		msg->sap = vcc->sap;
+	if (svc)
+		msg->svc = *svc;
+	if (vcc)
+		msg->local = vcc->local;
+	if (pvc)
+		msg->pvc = *pvc;
+	if (vcc) {
+		if (type == as_connect && test_bit(ATM_VF_SESSION, &vcc->flags))
+			msg->session = ++session;
+			/* every new pmp connect gets the next session number */
+	}
+	sigd_put_skb(skb);
+	if (vcc)
+		set_bit(ATM_VF_REGIS, &vcc->flags);
+}
+
+void sigd_enq(struct atm_vcc *vcc, enum atmsvc_msg_type type,
+	      struct atm_vcc *listen_vcc, const struct sockaddr_atmpvc *pvc,
+	      const struct sockaddr_atmsvc *svc)
+{
+	sigd_enq2(vcc, type, listen_vcc, pvc, svc, vcc ? &vcc->qos : NULL, 0);
+	/* other ISP applications may use "reply" */
+}
+
+static void purge_vcc(struct atm_vcc *vcc)
+{
+	if (sk_atm(vcc)->sk_family == PF_ATMSVC &&
+	    !test_bit(ATM_VF_META, &vcc->flags)) {
+		set_bit(ATM_VF_RELEASED, &vcc->flags);
+		clear_bit(ATM_VF_REGIS, &vcc->flags);
+		vcc_release_async(vcc, -EUNATCH);
+	}
+}
+
+static void sigd_close(struct atm_vcc *vcc)
+{
+	struct sock *s;
+	int i;
+
+	pr_debug("\n");
+	sigd = NULL;
+	if (skb_peek(&sk_atm(vcc)->sk_receive_queue))
+		pr_err("closing with requests pending\n");
+	skb_queue_purge(&sk_atm(vcc)->sk_receive_queue);
+
+	read_lock(&vcc_sklist_lock);
+	for (i = 0; i < VCC_HTABLE_SIZE; ++i) {
+		struct hlist_head *head = &vcc_hash[i];
+
+		sk_for_each(s, head) {
+			vcc = atm_sk(s);
+
+			purge_vcc(vcc);
+		}
+	}
+	read_unlock(&vcc_sklist_lock);
+}
+
+static const struct atmdev_ops sigd_dev_ops = {
+	.close = sigd_close,
+	.send =	sigd_send
+};
+
+static struct atm_dev sigd_dev = {
+	.ops =		&sigd_dev_ops,
+	.type =		"sig",
+	.number =	999,
+	.lock =		__SPIN_LOCK_UNLOCKED(sigd_dev.lock)
+};
+
+int sigd_attach(struct atm_vcc *vcc)
+{
+	if (sigd)
+		return -EADDRINUSE;
+	pr_debug("\n");
+	sigd = vcc;
+	vcc->dev = &sigd_dev;
+	vcc_insert_socket(sk_atm(vcc));
+	set_bit(ATM_VF_META, &vcc->flags);
+	set_bit(ATM_VF_READY, &vcc->flags);
+	return 0;
+}