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, 382 insertions, 0 deletions

diff --git a/drivers/tee/optee/supp.c b/drivers/tee/optee/supp.c
new file mode 100644
index 000000000..322a543b8
--- /dev/null
+++ b/drivers/tee/optee/supp.c
@@ -0,0 +1,382 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2015, Linaro Limited
+ */
+#include <linux/device.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+#include "optee_private.h"
+
+struct optee_supp_req {
+	struct list_head link;
+
+	bool in_queue;
+	u32 func;
+	u32 ret;
+	size_t num_params;
+	struct tee_param *param;
+
+	struct completion c;
+};
+
+void optee_supp_init(struct optee_supp *supp)
+{
+	memset(supp, 0, sizeof(*supp));
+	mutex_init(&supp->mutex);
+	init_completion(&supp->reqs_c);
+	idr_init(&supp->idr);
+	INIT_LIST_HEAD(&supp->reqs);
+	supp->req_id = -1;
+}
+
+void optee_supp_uninit(struct optee_supp *supp)
+{
+	mutex_destroy(&supp->mutex);
+	idr_destroy(&supp->idr);
+}
+
+void optee_supp_release(struct optee_supp *supp)
+{
+	int id;
+	struct optee_supp_req *req;
+	struct optee_supp_req *req_tmp;
+
+	mutex_lock(&supp->mutex);
+
+	/* Abort all request retrieved by supplicant */
+	idr_for_each_entry(&supp->idr, req, id) {
+		idr_remove(&supp->idr, id);
+		req->ret = TEEC_ERROR_COMMUNICATION;
+		complete(&req->c);
+	}
+
+	/* Abort all queued requests */
+	list_for_each_entry_safe(req, req_tmp, &supp->reqs, link) {
+		list_del(&req->link);
+		req->in_queue = false;
+		req->ret = TEEC_ERROR_COMMUNICATION;
+		complete(&req->c);
+	}
+
+	supp->ctx = NULL;
+	supp->req_id = -1;
+
+	mutex_unlock(&supp->mutex);
+}
+
+/**
+ * optee_supp_thrd_req() - request service from supplicant
+ * @ctx:	context doing the request
+ * @func:	function requested
+ * @num_params:	number of elements in @param array
+ * @param:	parameters for function
+ *
+ * Returns result of operation to be passed to secure world
+ */
+u32 optee_supp_thrd_req(struct tee_context *ctx, u32 func, size_t num_params,
+			struct tee_param *param)
+
+{
+	struct optee *optee = tee_get_drvdata(ctx->teedev);
+	struct optee_supp *supp = &optee->supp;
+	struct optee_supp_req *req;
+	bool interruptable;
+	u32 ret;
+
+	/*
+	 * Return in case there is no supplicant available and
+	 * non-blocking request.
+	 */
+	if (!supp->ctx && ctx->supp_nowait)
+		return TEEC_ERROR_COMMUNICATION;
+
+	req = kzalloc(sizeof(*req), GFP_KERNEL);
+	if (!req)
+		return TEEC_ERROR_OUT_OF_MEMORY;
+
+	init_completion(&req->c);
+	req->func = func;
+	req->num_params = num_params;
+	req->param = param;
+
+	/* Insert the request in the request list */
+	mutex_lock(&supp->mutex);
+	list_add_tail(&req->link, &supp->reqs);
+	req->in_queue = true;
+	mutex_unlock(&supp->mutex);
+
+	/* Tell an eventual waiter there's a new request */
+	complete(&supp->reqs_c);
+
+	/*
+	 * Wait for supplicant to process and return result, once we've
+	 * returned from wait_for_completion(&req->c) successfully we have
+	 * exclusive access again.
+	 */
+	while (wait_for_completion_interruptible(&req->c)) {
+		mutex_lock(&supp->mutex);
+		interruptable = !supp->ctx;
+		if (interruptable) {
+			/*
+			 * There's no supplicant available and since the
+			 * supp->mutex currently is held none can
+			 * become available until the mutex released
+			 * again.
+			 *
+			 * Interrupting an RPC to supplicant is only
+			 * allowed as a way of slightly improving the user
+			 * experience in case the supplicant hasn't been
+			 * started yet. During normal operation the supplicant
+			 * will serve all requests in a timely manner and
+			 * interrupting then wouldn't make sense.
+			 */
+			if (req->in_queue) {
+				list_del(&req->link);
+				req->in_queue = false;
+			}
+		}
+		mutex_unlock(&supp->mutex);
+
+		if (interruptable) {
+			req->ret = TEEC_ERROR_COMMUNICATION;
+			break;
+		}
+	}
+
+	ret = req->ret;
+	kfree(req);
+
+	return ret;
+}
+
+static struct optee_supp_req  *supp_pop_entry(struct optee_supp *supp,
+					      int num_params, int *id)
+{
+	struct optee_supp_req *req;
+
+	if (supp->req_id != -1) {
+		/*
+		 * Supplicant should not mix synchronous and asnynchronous
+		 * requests.
+		 */
+		return ERR_PTR(-EINVAL);
+	}
+
+	if (list_empty(&supp->reqs))
+		return NULL;
+
+	req = list_first_entry(&supp->reqs, struct optee_supp_req, link);
+
+	if (num_params < req->num_params) {
+		/* Not enough room for parameters */
+		return ERR_PTR(-EINVAL);
+	}
+
+	*id = idr_alloc(&supp->idr, req, 1, 0, GFP_KERNEL);
+	if (*id < 0)
+		return ERR_PTR(-ENOMEM);
+
+	list_del(&req->link);
+	req->in_queue = false;
+
+	return req;
+}
+
+static int supp_check_recv_params(size_t num_params, struct tee_param *params,
+				  size_t *num_meta)
+{
+	size_t n;
+
+	if (!num_params)
+		return -EINVAL;
+
+	/*
+	 * If there's memrefs we need to decrease those as they where
+	 * increased earlier and we'll even refuse to accept any below.
+	 */
+	for (n = 0; n < num_params; n++)
+		if (tee_param_is_memref(params + n) && params[n].u.memref.shm)
+			tee_shm_put(params[n].u.memref.shm);
+
+	/*
+	 * We only expect parameters as TEE_IOCTL_PARAM_ATTR_TYPE_NONE with
+	 * or without the TEE_IOCTL_PARAM_ATTR_META bit set.
+	 */
+	for (n = 0; n < num_params; n++)
+		if (params[n].attr &&
+		    params[n].attr != TEE_IOCTL_PARAM_ATTR_META)
+			return -EINVAL;
+
+	/* At most we'll need one meta parameter so no need to check for more */
+	if (params->attr == TEE_IOCTL_PARAM_ATTR_META)
+		*num_meta = 1;
+	else
+		*num_meta = 0;
+
+	return 0;
+}
+
+/**
+ * optee_supp_recv() - receive request for supplicant
+ * @ctx:	context receiving the request
+ * @func:	requested function in supplicant
+ * @num_params:	number of elements allocated in @param, updated with number
+ *		used elements
+ * @param:	space for parameters for @func
+ *
+ * Returns 0 on success or <0 on failure
+ */
+int optee_supp_recv(struct tee_context *ctx, u32 *func, u32 *num_params,
+		    struct tee_param *param)
+{
+	struct tee_device *teedev = ctx->teedev;
+	struct optee *optee = tee_get_drvdata(teedev);
+	struct optee_supp *supp = &optee->supp;
+	struct optee_supp_req *req = NULL;
+	int id;
+	size_t num_meta;
+	int rc;
+
+	rc = supp_check_recv_params(*num_params, param, &num_meta);
+	if (rc)
+		return rc;
+
+	while (true) {
+		mutex_lock(&supp->mutex);
+		req = supp_pop_entry(supp, *num_params - num_meta, &id);
+		mutex_unlock(&supp->mutex);
+
+		if (req) {
+			if (IS_ERR(req))
+				return PTR_ERR(req);
+			break;
+		}
+
+		/*
+		 * If we didn't get a request we'll block in
+		 * wait_for_completion() to avoid needless spinning.
+		 *
+		 * This is where supplicant will be hanging most of
+		 * the time, let's make this interruptable so we
+		 * can easily restart supplicant if needed.
+		 */
+		if (wait_for_completion_interruptible(&supp->reqs_c))
+			return -ERESTARTSYS;
+	}
+
+	if (num_meta) {
+		/*
+		 * tee-supplicant support meta parameters -> requsts can be
+		 * processed asynchronously.
+		 */
+		param->attr = TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INOUT |
+			      TEE_IOCTL_PARAM_ATTR_META;
+		param->u.value.a = id;
+		param->u.value.b = 0;
+		param->u.value.c = 0;
+	} else {
+		mutex_lock(&supp->mutex);
+		supp->req_id = id;
+		mutex_unlock(&supp->mutex);
+	}
+
+	*func = req->func;
+	*num_params = req->num_params + num_meta;
+	memcpy(param + num_meta, req->param,
+	       sizeof(struct tee_param) * req->num_params);
+
+	return 0;
+}
+
+static struct optee_supp_req *supp_pop_req(struct optee_supp *supp,
+					   size_t num_params,
+					   struct tee_param *param,
+					   size_t *num_meta)
+{
+	struct optee_supp_req *req;
+	int id;
+	size_t nm;
+	const u32 attr = TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INOUT |
+			 TEE_IOCTL_PARAM_ATTR_META;
+
+	if (!num_params)
+		return ERR_PTR(-EINVAL);
+
+	if (supp->req_id == -1) {
+		if (param->attr != attr)
+			return ERR_PTR(-EINVAL);
+		id = param->u.value.a;
+		nm = 1;
+	} else {
+		id = supp->req_id;
+		nm = 0;
+	}
+
+	req = idr_find(&supp->idr, id);
+	if (!req)
+		return ERR_PTR(-ENOENT);
+
+	if ((num_params - nm) != req->num_params)
+		return ERR_PTR(-EINVAL);
+
+	idr_remove(&supp->idr, id);
+	supp->req_id = -1;
+	*num_meta = nm;
+
+	return req;
+}
+
+/**
+ * optee_supp_send() - send result of request from supplicant
+ * @ctx:	context sending result
+ * @ret:	return value of request
+ * @num_params:	number of parameters returned
+ * @param:	returned parameters
+ *
+ * Returns 0 on success or <0 on failure.
+ */
+int optee_supp_send(struct tee_context *ctx, u32 ret, u32 num_params,
+		    struct tee_param *param)
+{
+	struct tee_device *teedev = ctx->teedev;
+	struct optee *optee = tee_get_drvdata(teedev);
+	struct optee_supp *supp = &optee->supp;
+	struct optee_supp_req *req;
+	size_t n;
+	size_t num_meta;
+
+	mutex_lock(&supp->mutex);
+	req = supp_pop_req(supp, num_params, param, &num_meta);
+	mutex_unlock(&supp->mutex);
+
+	if (IS_ERR(req)) {
+		/* Something is wrong, let supplicant restart. */
+		return PTR_ERR(req);
+	}
+
+	/* Update out and in/out parameters */
+	for (n = 0; n < req->num_params; n++) {
+		struct tee_param *p = req->param + n;
+
+		switch (p->attr & TEE_IOCTL_PARAM_ATTR_TYPE_MASK) {
+		case TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_OUTPUT:
+		case TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INOUT:
+			p->u.value.a = param[n + num_meta].u.value.a;
+			p->u.value.b = param[n + num_meta].u.value.b;
+			p->u.value.c = param[n + num_meta].u.value.c;
+			break;
+		case TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_OUTPUT:
+		case TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INOUT:
+			p->u.memref.size = param[n + num_meta].u.memref.size;
+			break;
+		default:
+			break;
+		}
+	}
+	req->ret = ret;
+
+	/* Let the requesting thread continue */
+	complete(&req->c);
+
+	return 0;
+}