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, 216 insertions, 0 deletions

diff --git a/drivers/media/pci/pt3/pt3_dma.c b/drivers/media/pci/pt3/pt3_dma.c
new file mode 100644
index 000000000..de677b90e
--- /dev/null
+++ b/drivers/media/pci/pt3/pt3_dma.c
@@ -0,0 +1,216 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Earthsoft PT3 driver
+ *
+ * Copyright (C) 2014 Akihiro Tsukada <tskd08@gmail.com>
+ */
+#include <linux/dma-mapping.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+
+#include "pt3.h"
+
+#define PT3_ACCESS_UNIT (TS_PACKET_SZ * 128)
+#define PT3_BUF_CANARY  (0x74)
+
+static u32 get_dma_base(int idx)
+{
+	int i;
+
+	i = (idx == 1 || idx == 2) ? 3 - idx : idx;
+	return REG_DMA_BASE + 0x18 * i;
+}
+
+int pt3_stop_dma(struct pt3_adapter *adap)
+{
+	struct pt3_board *pt3 = adap->dvb_adap.priv;
+	u32 base;
+	u32 stat;
+	int retry;
+
+	base = get_dma_base(adap->adap_idx);
+	stat = ioread32(pt3->regs[0] + base + OFST_STATUS);
+	if (!(stat & 0x01))
+		return 0;
+
+	iowrite32(0x02, pt3->regs[0] + base + OFST_DMA_CTL);
+	for (retry = 0; retry < 5; retry++) {
+		stat = ioread32(pt3->regs[0] + base + OFST_STATUS);
+		if (!(stat & 0x01))
+			return 0;
+		msleep(50);
+	}
+	return -EIO;
+}
+
+int pt3_start_dma(struct pt3_adapter *adap)
+{
+	struct pt3_board *pt3 = adap->dvb_adap.priv;
+	u32 base = get_dma_base(adap->adap_idx);
+
+	iowrite32(0x02, pt3->regs[0] + base + OFST_DMA_CTL);
+	iowrite32(lower_32_bits(adap->desc_buf[0].b_addr),
+			pt3->regs[0] + base + OFST_DMA_DESC_L);
+	iowrite32(upper_32_bits(adap->desc_buf[0].b_addr),
+			pt3->regs[0] + base + OFST_DMA_DESC_H);
+	iowrite32(0x01, pt3->regs[0] + base + OFST_DMA_CTL);
+	return 0;
+}
+
+
+static u8 *next_unit(struct pt3_adapter *adap, int *idx, int *ofs)
+{
+	*ofs += PT3_ACCESS_UNIT;
+	if (*ofs >= DATA_BUF_SZ) {
+		*ofs -= DATA_BUF_SZ;
+		(*idx)++;
+		if (*idx == adap->num_bufs)
+			*idx = 0;
+	}
+	return &adap->buffer[*idx].data[*ofs];
+}
+
+int pt3_proc_dma(struct pt3_adapter *adap)
+{
+	int idx, ofs;
+
+	idx = adap->buf_idx;
+	ofs = adap->buf_ofs;
+
+	if (adap->buffer[idx].data[ofs] == PT3_BUF_CANARY)
+		return 0;
+
+	while (*next_unit(adap, &idx, &ofs) != PT3_BUF_CANARY) {
+		u8 *p;
+
+		p = &adap->buffer[adap->buf_idx].data[adap->buf_ofs];
+		if (adap->num_discard > 0)
+			adap->num_discard--;
+		else if (adap->buf_ofs + PT3_ACCESS_UNIT > DATA_BUF_SZ) {
+			dvb_dmx_swfilter_packets(&adap->demux, p,
+				(DATA_BUF_SZ - adap->buf_ofs) / TS_PACKET_SZ);
+			dvb_dmx_swfilter_packets(&adap->demux,
+				adap->buffer[idx].data, ofs / TS_PACKET_SZ);
+		} else
+			dvb_dmx_swfilter_packets(&adap->demux, p,
+				PT3_ACCESS_UNIT / TS_PACKET_SZ);
+
+		*p = PT3_BUF_CANARY;
+		adap->buf_idx = idx;
+		adap->buf_ofs = ofs;
+	}
+	return 0;
+}
+
+void pt3_init_dmabuf(struct pt3_adapter *adap)
+{
+	int idx, ofs;
+	u8 *p;
+
+	idx = 0;
+	ofs = 0;
+	p = adap->buffer[0].data;
+	/* mark the whole buffers as "not written yet" */
+	while (idx < adap->num_bufs) {
+		p[ofs] = PT3_BUF_CANARY;
+		ofs += PT3_ACCESS_UNIT;
+		if (ofs >= DATA_BUF_SZ) {
+			ofs -= DATA_BUF_SZ;
+			idx++;
+			p = adap->buffer[idx].data;
+		}
+	}
+	adap->buf_idx = 0;
+	adap->buf_ofs = 0;
+}
+
+void pt3_free_dmabuf(struct pt3_adapter *adap)
+{
+	struct pt3_board *pt3;
+	int i;
+
+	pt3 = adap->dvb_adap.priv;
+	for (i = 0; i < adap->num_bufs; i++)
+		dma_free_coherent(&pt3->pdev->dev, DATA_BUF_SZ,
+			adap->buffer[i].data, adap->buffer[i].b_addr);
+	adap->num_bufs = 0;
+
+	for (i = 0; i < adap->num_desc_bufs; i++)
+		dma_free_coherent(&pt3->pdev->dev, PAGE_SIZE,
+			adap->desc_buf[i].descs, adap->desc_buf[i].b_addr);
+	adap->num_desc_bufs = 0;
+}
+
+
+int pt3_alloc_dmabuf(struct pt3_adapter *adap)
+{
+	struct pt3_board *pt3;
+	void *p;
+	int i, j;
+	int idx, ofs;
+	int num_desc_bufs;
+	dma_addr_t data_addr, desc_addr;
+	struct xfer_desc *d;
+
+	pt3 = adap->dvb_adap.priv;
+	adap->num_bufs = 0;
+	adap->num_desc_bufs = 0;
+	for (i = 0; i < pt3->num_bufs; i++) {
+		p = dma_alloc_coherent(&pt3->pdev->dev, DATA_BUF_SZ,
+					&adap->buffer[i].b_addr, GFP_KERNEL);
+		if (p == NULL)
+			goto failed;
+		adap->buffer[i].data = p;
+		adap->num_bufs++;
+	}
+	pt3_init_dmabuf(adap);
+
+	/* build circular-linked pointers (xfer_desc) to the data buffers*/
+	idx = 0;
+	ofs = 0;
+	num_desc_bufs =
+		DIV_ROUND_UP(adap->num_bufs * DATA_BUF_XFERS, DESCS_IN_PAGE);
+	for (i = 0; i < num_desc_bufs; i++) {
+		p = dma_alloc_coherent(&pt3->pdev->dev, PAGE_SIZE,
+					&desc_addr, GFP_KERNEL);
+		if (p == NULL)
+			goto failed;
+		adap->num_desc_bufs++;
+		adap->desc_buf[i].descs = p;
+		adap->desc_buf[i].b_addr = desc_addr;
+
+		if (i > 0) {
+			d = &adap->desc_buf[i - 1].descs[DESCS_IN_PAGE - 1];
+			d->next_l = lower_32_bits(desc_addr);
+			d->next_h = upper_32_bits(desc_addr);
+		}
+		for (j = 0; j < DESCS_IN_PAGE; j++) {
+			data_addr = adap->buffer[idx].b_addr + ofs;
+			d = &adap->desc_buf[i].descs[j];
+			d->addr_l = lower_32_bits(data_addr);
+			d->addr_h = upper_32_bits(data_addr);
+			d->size = DATA_XFER_SZ;
+
+			desc_addr += sizeof(struct xfer_desc);
+			d->next_l = lower_32_bits(desc_addr);
+			d->next_h = upper_32_bits(desc_addr);
+
+			ofs += DATA_XFER_SZ;
+			if (ofs >= DATA_BUF_SZ) {
+				ofs -= DATA_BUF_SZ;
+				idx++;
+				if (idx >= adap->num_bufs) {
+					desc_addr = adap->desc_buf[0].b_addr;
+					d->next_l = lower_32_bits(desc_addr);
+					d->next_h = upper_32_bits(desc_addr);
+					return 0;
+				}
+			}
+		}
+	}
+	return 0;
+
+failed:
+	pt3_free_dmabuf(adap);
+	return -ENOMEM;
+}