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, 305 insertions, 0 deletions

diff --git a/drivers/media/pci/saa7164/saa7164-buffer.c b/drivers/media/pci/saa7164/saa7164-buffer.c
new file mode 100644
index 000000000..89c5b79a5
--- /dev/null
+++ b/drivers/media/pci/saa7164/saa7164-buffer.c
@@ -0,0 +1,305 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Driver for the NXP SAA7164 PCIe bridge
+ *
+ *  Copyright (c) 2010-2015 Steven Toth <stoth@kernellabs.com>
+ */
+
+#include <linux/slab.h>
+
+#include "saa7164.h"
+
+/* The PCI address space for buffer handling looks like this:
+ *
+ * +-u32 wide-------------+
+ * |                      +
+ * +-u64 wide------------------------------------+
+ * +                                             +
+ * +----------------------+
+ * | CurrentBufferPtr     + Pointer to current PCI buffer >-+
+ * +----------------------+                                 |
+ * | Unused               +                                 |
+ * +----------------------+                                 |
+ * | Pitch                + = 188 (bytes)                   |
+ * +----------------------+                                 |
+ * | PCI buffer size      + = pitch * number of lines (312) |
+ * +----------------------+                                 |
+ * |0| Buf0 Write Offset  +                                 |
+ * +----------------------+                                 v
+ * |1| Buf1 Write Offset  +                                 |
+ * +----------------------+                                 |
+ * |2| Buf2 Write Offset  +                                 |
+ * +----------------------+                                 |
+ * |3| Buf3 Write Offset  +                                 |
+ * +----------------------+                                 |
+ * ... More write offsets                                   |
+ * +---------------------------------------------+          |
+ * +0| set of ptrs to PCI pagetables             +          |
+ * +---------------------------------------------+          |
+ * +1| set of ptrs to PCI pagetables             + <--------+
+ * +---------------------------------------------+
+ * +2| set of ptrs to PCI pagetables             +
+ * +---------------------------------------------+
+ * +3| set of ptrs to PCI pagetables             + >--+
+ * +---------------------------------------------+    |
+ * ... More buffer pointers                           |  +----------------+
+ *						    +->| pt[0] TS data  |
+ *						    |  +----------------+
+ *						    |
+ *						    |  +----------------+
+ *						    +->| pt[1] TS data  |
+ *						    |  +----------------+
+ *						    | etc
+ */
+
+void saa7164_buffer_display(struct saa7164_buffer *buf)
+{
+	struct saa7164_dev *dev = buf->port->dev;
+	int i;
+
+	dprintk(DBGLVL_BUF, "%s()   buffer @ 0x%p nr=%d\n",
+		__func__, buf, buf->idx);
+	dprintk(DBGLVL_BUF, "  pci_cpu @ 0x%p    dma @ 0x%08llx len = 0x%x\n",
+		buf->cpu, (long long)buf->dma, buf->pci_size);
+	dprintk(DBGLVL_BUF, "   pt_cpu @ 0x%p pt_dma @ 0x%08llx len = 0x%x\n",
+		buf->pt_cpu, (long long)buf->pt_dma, buf->pt_size);
+
+	/* Format the Page Table Entries to point into the data buffer */
+	for (i = 0 ; i < SAA7164_PT_ENTRIES; i++) {
+
+		dprintk(DBGLVL_BUF, "    pt[%02d] = 0x%p -> 0x%llx\n",
+			i, buf->pt_cpu, (u64)*(buf->pt_cpu));
+
+	}
+}
+/* Allocate a new buffer structure and associated PCI space in bytes.
+ * len must be a multiple of sizeof(u64)
+ */
+struct saa7164_buffer *saa7164_buffer_alloc(struct saa7164_port *port,
+	u32 len)
+{
+	struct tmHWStreamParameters *params = &port->hw_streamingparams;
+	struct saa7164_buffer *buf = NULL;
+	struct saa7164_dev *dev = port->dev;
+	int i;
+
+	if ((len == 0) || (len >= 65536) || (len % sizeof(u64))) {
+		log_warn("%s() SAA_ERR_BAD_PARAMETER\n", __func__);
+		goto ret;
+	}
+
+	buf = kzalloc(sizeof(*buf), GFP_KERNEL);
+	if (!buf)
+		goto ret;
+
+	buf->idx = -1;
+	buf->port = port;
+	buf->flags = SAA7164_BUFFER_FREE;
+	buf->pos = 0;
+	buf->actual_size = params->pitch * params->numberoflines;
+	buf->crc = 0;
+	/* TODO: arg len is being ignored */
+	buf->pci_size = SAA7164_PT_ENTRIES * 0x1000;
+	buf->pt_size = (SAA7164_PT_ENTRIES * sizeof(u64)) + 0x1000;
+
+	/* Allocate contiguous memory */
+	buf->cpu = dma_alloc_coherent(&port->dev->pci->dev, buf->pci_size,
+				      &buf->dma, GFP_KERNEL);
+	if (!buf->cpu)
+		goto fail1;
+
+	buf->pt_cpu = dma_alloc_coherent(&port->dev->pci->dev, buf->pt_size,
+					 &buf->pt_dma, GFP_KERNEL);
+	if (!buf->pt_cpu)
+		goto fail2;
+
+	/* init the buffers to a known pattern, easier during debugging */
+	memset(buf->cpu, 0xff, buf->pci_size);
+	buf->crc = crc32(0, buf->cpu, buf->actual_size);
+	memset(buf->pt_cpu, 0xff, buf->pt_size);
+
+	dprintk(DBGLVL_BUF, "%s()   allocated buffer @ 0x%p (%d pageptrs)\n",
+		__func__, buf, params->numpagetables);
+	dprintk(DBGLVL_BUF, "  pci_cpu @ 0x%p    dma @ 0x%08lx len = 0x%x\n",
+		buf->cpu, (long)buf->dma, buf->pci_size);
+	dprintk(DBGLVL_BUF, "   pt_cpu @ 0x%p pt_dma @ 0x%08lx len = 0x%x\n",
+		buf->pt_cpu, (long)buf->pt_dma, buf->pt_size);
+
+	/* Format the Page Table Entries to point into the data buffer */
+	for (i = 0 ; i < params->numpagetables; i++) {
+
+		*(buf->pt_cpu + i) = buf->dma + (i * 0x1000); /* TODO */
+		dprintk(DBGLVL_BUF, "    pt[%02d] = 0x%p -> 0x%llx\n",
+			i, buf->pt_cpu, (u64)*(buf->pt_cpu));
+
+	}
+
+	goto ret;
+
+fail2:
+	dma_free_coherent(&port->dev->pci->dev, buf->pci_size, buf->cpu,
+			  buf->dma);
+fail1:
+	kfree(buf);
+
+	buf = NULL;
+ret:
+	return buf;
+}
+
+int saa7164_buffer_dealloc(struct saa7164_buffer *buf)
+{
+	struct saa7164_dev *dev;
+
+	if (!buf || !buf->port)
+		return SAA_ERR_BAD_PARAMETER;
+	dev = buf->port->dev;
+
+	dprintk(DBGLVL_BUF, "%s() deallocating buffer @ 0x%p\n",
+		__func__, buf);
+
+	if (buf->flags != SAA7164_BUFFER_FREE)
+		log_warn(" freeing a non-free buffer\n");
+
+	dma_free_coherent(&dev->pci->dev, buf->pci_size, buf->cpu, buf->dma);
+	dma_free_coherent(&dev->pci->dev, buf->pt_size, buf->pt_cpu,
+			  buf->pt_dma);
+
+	kfree(buf);
+
+	return SAA_OK;
+}
+
+int saa7164_buffer_zero_offsets(struct saa7164_port *port, int i)
+{
+	struct saa7164_dev *dev = port->dev;
+
+	if ((i < 0) || (i >= port->hwcfg.buffercount))
+		return -EINVAL;
+
+	dprintk(DBGLVL_BUF, "%s(idx = %d)\n", __func__, i);
+
+	saa7164_writel(port->bufoffset + (sizeof(u32) * i), 0);
+
+	return 0;
+}
+
+/* Write a buffer into the hardware */
+int saa7164_buffer_activate(struct saa7164_buffer *buf, int i)
+{
+	struct saa7164_port *port = buf->port;
+	struct saa7164_dev *dev = port->dev;
+
+	if ((i < 0) || (i >= port->hwcfg.buffercount))
+		return -EINVAL;
+
+	dprintk(DBGLVL_BUF, "%s(idx = %d)\n", __func__, i);
+
+	buf->idx = i; /* Note of which buffer list index position we occupy */
+	buf->flags = SAA7164_BUFFER_BUSY;
+	buf->pos = 0;
+
+	/* TODO: Review this in light of 32v64 assignments */
+	saa7164_writel(port->bufoffset + (sizeof(u32) * i), 0);
+	saa7164_writel(port->bufptr32h + ((sizeof(u32) * 2) * i), buf->pt_dma);
+	saa7164_writel(port->bufptr32l + ((sizeof(u32) * 2) * i), 0);
+
+	dprintk(DBGLVL_BUF, "	buf[%d] offset 0x%llx (0x%x) buf 0x%llx/%llx (0x%x/%x) nr=%d\n",
+		buf->idx,
+		(u64)port->bufoffset + (i * sizeof(u32)),
+		saa7164_readl(port->bufoffset + (sizeof(u32) * i)),
+		(u64)port->bufptr32h + ((sizeof(u32) * 2) * i),
+		(u64)port->bufptr32l + ((sizeof(u32) * 2) * i),
+		saa7164_readl(port->bufptr32h + ((sizeof(u32) * i) * 2)),
+		saa7164_readl(port->bufptr32l + ((sizeof(u32) * i) * 2)),
+		buf->idx);
+
+	return 0;
+}
+
+int saa7164_buffer_cfg_port(struct saa7164_port *port)
+{
+	struct tmHWStreamParameters *params = &port->hw_streamingparams;
+	struct saa7164_dev *dev = port->dev;
+	struct saa7164_buffer *buf;
+	struct list_head *c, *n;
+	int i = 0;
+
+	dprintk(DBGLVL_BUF, "%s(port=%d)\n", __func__, port->nr);
+
+	saa7164_writel(port->bufcounter, 0);
+	saa7164_writel(port->pitch, params->pitch);
+	saa7164_writel(port->bufsize, params->pitch * params->numberoflines);
+
+	dprintk(DBGLVL_BUF, " configured:\n");
+	dprintk(DBGLVL_BUF, "   lmmio       0x%p\n", dev->lmmio);
+	dprintk(DBGLVL_BUF, "   bufcounter  0x%x = 0x%x\n", port->bufcounter,
+		saa7164_readl(port->bufcounter));
+
+	dprintk(DBGLVL_BUF, "   pitch       0x%x = %d\n", port->pitch,
+		saa7164_readl(port->pitch));
+
+	dprintk(DBGLVL_BUF, "   bufsize     0x%x = %d\n", port->bufsize,
+		saa7164_readl(port->bufsize));
+
+	dprintk(DBGLVL_BUF, "   buffercount = %d\n", port->hwcfg.buffercount);
+	dprintk(DBGLVL_BUF, "   bufoffset = 0x%x\n", port->bufoffset);
+	dprintk(DBGLVL_BUF, "   bufptr32h = 0x%x\n", port->bufptr32h);
+	dprintk(DBGLVL_BUF, "   bufptr32l = 0x%x\n", port->bufptr32l);
+
+	/* Poke the buffers and offsets into PCI space */
+	mutex_lock(&port->dmaqueue_lock);
+	list_for_each_safe(c, n, &port->dmaqueue.list) {
+		buf = list_entry(c, struct saa7164_buffer, list);
+
+		BUG_ON(buf->flags != SAA7164_BUFFER_FREE);
+
+		/* Place the buffer in the h/w queue */
+		saa7164_buffer_activate(buf, i);
+
+		/* Don't exceed the device maximum # bufs */
+		BUG_ON(i > port->hwcfg.buffercount);
+		i++;
+
+	}
+	mutex_unlock(&port->dmaqueue_lock);
+
+	return 0;
+}
+
+struct saa7164_user_buffer *saa7164_buffer_alloc_user(struct saa7164_dev *dev,
+	u32 len)
+{
+	struct saa7164_user_buffer *buf;
+
+	buf = kzalloc(sizeof(*buf), GFP_KERNEL);
+	if (!buf)
+		return NULL;
+
+	buf->data = kzalloc(len, GFP_KERNEL);
+
+	if (!buf->data) {
+		kfree(buf);
+		return NULL;
+	}
+
+	buf->actual_size = len;
+	buf->pos = 0;
+	buf->crc = 0;
+
+	dprintk(DBGLVL_BUF, "%s()   allocated user buffer @ 0x%p\n",
+		__func__, buf);
+
+	return buf;
+}
+
+void saa7164_buffer_dealloc_user(struct saa7164_user_buffer *buf)
+{
+	if (!buf)
+		return;
+
+	kfree(buf->data);
+	buf->data = NULL;
+
+	kfree(buf);
+}