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, 380 insertions, 0 deletions

diff --git a/tools/usb/ffs-aio-example/multibuff/device_app/aio_multibuff.c b/tools/usb/ffs-aio-example/multibuff/device_app/aio_multibuff.c
new file mode 100644
index 000000000..aaca1f44e
--- /dev/null
+++ b/tools/usb/ffs-aio-example/multibuff/device_app/aio_multibuff.c
@@ -0,0 +1,380 @@
+/*
+ * This is free and unencumbered software released into the public domain.
+ *
+ * Anyone is free to copy, modify, publish, use, compile, sell, or
+ * distribute this software, either in source code form or as a compiled
+ * binary, for any purpose, commercial or non-commercial, and by any
+ * means.
+ *
+ * In jurisdictions that recognize copyright laws, the author or authors
+ * of this software dedicate any and all copyright interest in the
+ * software to the public domain. We make this dedication for the benefit
+ * of the public at large and to the detriment of our heirs and
+ * successors. We intend this dedication to be an overt act of
+ * relinquishment in perpetuity of all present and future rights to this
+ * software under copyright law.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * For more information, please refer to <http://unlicense.org/>
+ */
+
+#define _BSD_SOURCE /* for endian.h */
+
+#include <endian.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/poll.h>
+#include <unistd.h>
+#include <stdbool.h>
+#include <sys/eventfd.h>
+
+#include "libaio.h"
+#define IOCB_FLAG_RESFD         (1 << 0)
+
+#include <linux/usb/functionfs.h>
+
+#define BUF_LEN		8192
+#define BUFS_MAX	128
+#define AIO_MAX		(BUFS_MAX*2)
+
+/******************** Descriptors and Strings *******************************/
+
+static const struct {
+	struct usb_functionfs_descs_head_v2 header;
+	__le32 fs_count;
+	__le32 hs_count;
+	struct {
+		struct usb_interface_descriptor intf;
+		struct usb_endpoint_descriptor_no_audio bulk_sink;
+		struct usb_endpoint_descriptor_no_audio bulk_source;
+	} __attribute__ ((__packed__)) fs_descs, hs_descs;
+} __attribute__ ((__packed__)) descriptors = {
+	.header = {
+		.magic = htole32(FUNCTIONFS_DESCRIPTORS_MAGIC_V2),
+		.flags = htole32(FUNCTIONFS_HAS_FS_DESC |
+				     FUNCTIONFS_HAS_HS_DESC),
+		.length = htole32(sizeof(descriptors)),
+	},
+	.fs_count = htole32(3),
+	.fs_descs = {
+		.intf = {
+			.bLength = sizeof(descriptors.fs_descs.intf),
+			.bDescriptorType = USB_DT_INTERFACE,
+			.bNumEndpoints = 2,
+			.bInterfaceClass = USB_CLASS_VENDOR_SPEC,
+			.iInterface = 1,
+		},
+		.bulk_sink = {
+			.bLength = sizeof(descriptors.fs_descs.bulk_sink),
+			.bDescriptorType = USB_DT_ENDPOINT,
+			.bEndpointAddress = 1 | USB_DIR_IN,
+			.bmAttributes = USB_ENDPOINT_XFER_BULK,
+		},
+		.bulk_source = {
+			.bLength = sizeof(descriptors.fs_descs.bulk_source),
+			.bDescriptorType = USB_DT_ENDPOINT,
+			.bEndpointAddress = 2 | USB_DIR_OUT,
+			.bmAttributes = USB_ENDPOINT_XFER_BULK,
+		},
+	},
+	.hs_count = htole32(3),
+	.hs_descs = {
+		.intf = {
+			.bLength = sizeof(descriptors.hs_descs.intf),
+			.bDescriptorType = USB_DT_INTERFACE,
+			.bNumEndpoints = 2,
+			.bInterfaceClass = USB_CLASS_VENDOR_SPEC,
+			.iInterface = 1,
+		},
+		.bulk_sink = {
+			.bLength = sizeof(descriptors.hs_descs.bulk_sink),
+			.bDescriptorType = USB_DT_ENDPOINT,
+			.bEndpointAddress = 1 | USB_DIR_IN,
+			.bmAttributes = USB_ENDPOINT_XFER_BULK,
+			.wMaxPacketSize = htole16(512),
+		},
+		.bulk_source = {
+			.bLength = sizeof(descriptors.hs_descs.bulk_source),
+			.bDescriptorType = USB_DT_ENDPOINT,
+			.bEndpointAddress = 2 | USB_DIR_OUT,
+			.bmAttributes = USB_ENDPOINT_XFER_BULK,
+			.wMaxPacketSize = htole16(512),
+		},
+	},
+};
+
+#define STR_INTERFACE "AIO Test"
+
+static const struct {
+	struct usb_functionfs_strings_head header;
+	struct {
+		__le16 code;
+		const char str1[sizeof(STR_INTERFACE)];
+	} __attribute__ ((__packed__)) lang0;
+} __attribute__ ((__packed__)) strings = {
+	.header = {
+		.magic = htole32(FUNCTIONFS_STRINGS_MAGIC),
+		.length = htole32(sizeof(strings)),
+		.str_count = htole32(1),
+		.lang_count = htole32(1),
+	},
+	.lang0 = {
+		htole16(0x0409), /* en-us */
+		STR_INTERFACE,
+	},
+};
+
+/********************** Buffer structure *******************************/
+
+struct io_buffer {
+	struct iocb **iocb;
+	unsigned char **buf;
+	unsigned cnt;
+	unsigned len;
+	unsigned requested;
+};
+
+/******************** Endpoints handling *******************************/
+
+static void display_event(struct usb_functionfs_event *event)
+{
+	static const char *const names[] = {
+		[FUNCTIONFS_BIND] = "BIND",
+		[FUNCTIONFS_UNBIND] = "UNBIND",
+		[FUNCTIONFS_ENABLE] = "ENABLE",
+		[FUNCTIONFS_DISABLE] = "DISABLE",
+		[FUNCTIONFS_SETUP] = "SETUP",
+		[FUNCTIONFS_SUSPEND] = "SUSPEND",
+		[FUNCTIONFS_RESUME] = "RESUME",
+	};
+	switch (event->type) {
+	case FUNCTIONFS_BIND:
+	case FUNCTIONFS_UNBIND:
+	case FUNCTIONFS_ENABLE:
+	case FUNCTIONFS_DISABLE:
+	case FUNCTIONFS_SETUP:
+	case FUNCTIONFS_SUSPEND:
+	case FUNCTIONFS_RESUME:
+		printf("Event %s\n", names[event->type]);
+	}
+}
+
+static void handle_ep0(int ep0, bool *ready)
+{
+	int ret;
+	struct usb_functionfs_event event;
+
+	ret = read(ep0, &event, sizeof(event));
+	if (!ret) {
+		perror("unable to read event from ep0");
+		return;
+	}
+	display_event(&event);
+	switch (event.type) {
+	case FUNCTIONFS_SETUP:
+		if (event.u.setup.bRequestType & USB_DIR_IN)
+			write(ep0, NULL, 0);
+		else
+			read(ep0, NULL, 0);
+		break;
+
+	case FUNCTIONFS_ENABLE:
+		*ready = true;
+		break;
+
+	case FUNCTIONFS_DISABLE:
+		*ready = false;
+		break;
+
+	default:
+		break;
+	}
+}
+
+void init_bufs(struct io_buffer *iobuf, unsigned n, unsigned len)
+{
+	unsigned i;
+	iobuf->buf = malloc(n*sizeof(*iobuf->buf));
+	iobuf->iocb = malloc(n*sizeof(*iobuf->iocb));
+	iobuf->cnt = n;
+	iobuf->len = len;
+	iobuf->requested = 0;
+	for (i = 0; i < n; ++i) {
+		iobuf->buf[i] = malloc(len*sizeof(**iobuf->buf));
+		iobuf->iocb[i] = malloc(sizeof(**iobuf->iocb));
+	}
+	iobuf->cnt = n;
+}
+
+void delete_bufs(struct io_buffer *iobuf)
+{
+	unsigned i;
+	for (i = 0; i < iobuf->cnt; ++i) {
+		free(iobuf->buf[i]);
+		free(iobuf->iocb[i]);
+	}
+	free(iobuf->buf);
+	free(iobuf->iocb);
+}
+
+int main(int argc, char *argv[])
+{
+	int ret;
+	unsigned i, j;
+	char *ep_path;
+
+	int ep0, ep1;
+
+	io_context_t ctx;
+
+	int evfd;
+	fd_set rfds;
+
+	struct io_buffer iobuf[2];
+	int actual = 0;
+	bool ready;
+
+	if (argc != 2) {
+		printf("ffs directory not specified!\n");
+		return 1;
+	}
+
+	ep_path = malloc(strlen(argv[1]) + 4 /* "/ep#" */ + 1 /* '\0' */);
+	if (!ep_path) {
+		perror("malloc");
+		return 1;
+	}
+
+	/* open endpoint files */
+	sprintf(ep_path, "%s/ep0", argv[1]);
+	ep0 = open(ep_path, O_RDWR);
+	if (ep0 < 0) {
+		perror("unable to open ep0");
+		return 1;
+	}
+	if (write(ep0, &descriptors, sizeof(descriptors)) < 0) {
+		perror("unable do write descriptors");
+		return 1;
+	}
+	if (write(ep0, &strings, sizeof(strings)) < 0) {
+		perror("unable to write strings");
+		return 1;
+	}
+	sprintf(ep_path, "%s/ep1", argv[1]);
+	ep1 = open(ep_path, O_RDWR);
+	if (ep1 < 0) {
+		perror("unable to open ep1");
+		return 1;
+	}
+
+	free(ep_path);
+
+	memset(&ctx, 0, sizeof(ctx));
+	/* setup aio context to handle up to AIO_MAX requests */
+	if (io_setup(AIO_MAX, &ctx) < 0) {
+		perror("unable to setup aio");
+		return 1;
+	}
+
+	evfd = eventfd(0, 0);
+	if (evfd < 0) {
+		perror("unable to open eventfd");
+		return 1;
+	}
+
+	for (i = 0; i < sizeof(iobuf)/sizeof(*iobuf); ++i)
+		init_bufs(&iobuf[i], BUFS_MAX, BUF_LEN);
+
+	while (1) {
+		FD_ZERO(&rfds);
+		FD_SET(ep0, &rfds);
+		FD_SET(evfd, &rfds);
+
+		ret = select(((ep0 > evfd) ? ep0 : evfd)+1,
+			     &rfds, NULL, NULL, NULL);
+		if (ret < 0) {
+			if (errno == EINTR)
+				continue;
+			perror("select");
+			break;
+		}
+
+		if (FD_ISSET(ep0, &rfds))
+			handle_ep0(ep0, &ready);
+
+		/* we are waiting for function ENABLE */
+		if (!ready)
+			continue;
+
+		/*
+		 * when we're preparing new data to submit,
+		 * second buffer being transmitted
+		 */
+		for (i = 0; i < sizeof(iobuf)/sizeof(*iobuf); ++i) {
+			if (iobuf[i].requested)
+				continue;
+			/* prepare requests */
+			for (j = 0; j < iobuf[i].cnt; ++j) {
+				io_prep_pwrite(iobuf[i].iocb[j], ep1,
+					       iobuf[i].buf[j],
+					       iobuf[i].len, 0);
+				/* enable eventfd notification */
+				iobuf[i].iocb[j]->u.c.flags |= IOCB_FLAG_RESFD;
+				iobuf[i].iocb[j]->u.c.resfd = evfd;
+			}
+			/* submit table of requests */
+			ret = io_submit(ctx, iobuf[i].cnt, iobuf[i].iocb);
+			if (ret >= 0) {
+				iobuf[i].requested = ret;
+				printf("submit: %d requests buf: %d\n", ret, i);
+			} else
+				perror("unable to submit requests");
+		}
+
+		/* if event is ready to read */
+		if (!FD_ISSET(evfd, &rfds))
+			continue;
+
+		uint64_t ev_cnt;
+		ret = read(evfd, &ev_cnt, sizeof(ev_cnt));
+		if (ret < 0) {
+			perror("unable to read eventfd");
+			break;
+		}
+
+		struct io_event e[BUFS_MAX];
+		/* we read aio events */
+		ret = io_getevents(ctx, 1, BUFS_MAX, e, NULL);
+		if (ret > 0) /* if we got events */
+			iobuf[actual].requested -= ret;
+
+		/* if all req's from iocb completed */
+		if (!iobuf[actual].requested)
+			actual = (actual + 1)%(sizeof(iobuf)/sizeof(*iobuf));
+	}
+
+	/* free resources */
+
+	for (i = 0; i < sizeof(iobuf)/sizeof(*iobuf); ++i)
+		delete_bufs(&iobuf[i]);
+	io_destroy(ctx);
+
+	close(ep1);
+	close(ep0);
+
+	return 0;
+}