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, 228 insertions, 0 deletions

diff --git a/arch/mips/sibyte/swarm/rtc_m41t81.c b/arch/mips/sibyte/swarm/rtc_m41t81.c
new file mode 100644
index 000000000..afe1e3460
--- /dev/null
+++ b/arch/mips/sibyte/swarm/rtc_m41t81.c
@@ -0,0 +1,228 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2000, 2001 Broadcom Corporation
+ *
+ * Copyright (C) 2002 MontaVista Software Inc.
+ * Author: jsun@mvista.com or jsun@junsun.net
+ */
+#include <linux/bcd.h>
+#include <linux/types.h>
+#include <linux/time.h>
+
+#include <asm/time.h>
+#include <asm/addrspace.h>
+#include <asm/io.h>
+
+#include <asm/sibyte/sb1250.h>
+#include <asm/sibyte/sb1250_regs.h>
+#include <asm/sibyte/sb1250_smbus.h>
+
+
+/* M41T81 definitions */
+
+/*
+ * Register bits
+ */
+
+#define M41T81REG_SC_ST		0x80		/* stop bit */
+#define M41T81REG_HR_CB		0x40		/* century bit */
+#define M41T81REG_HR_CEB	0x80		/* century enable bit */
+#define M41T81REG_CTL_S		0x20		/* sign bit */
+#define M41T81REG_CTL_FT	0x40		/* frequency test bit */
+#define M41T81REG_CTL_OUT	0x80		/* output level */
+#define M41T81REG_WD_RB0	0x01		/* watchdog resolution bit 0 */
+#define M41T81REG_WD_RB1	0x02		/* watchdog resolution bit 1 */
+#define M41T81REG_WD_BMB0	0x04		/* watchdog multiplier bit 0 */
+#define M41T81REG_WD_BMB1	0x08		/* watchdog multiplier bit 1 */
+#define M41T81REG_WD_BMB2	0x10		/* watchdog multiplier bit 2 */
+#define M41T81REG_WD_BMB3	0x20		/* watchdog multiplier bit 3 */
+#define M41T81REG_WD_BMB4	0x40		/* watchdog multiplier bit 4 */
+#define M41T81REG_AMO_ABE	0x20		/* alarm in "battery back-up mode" enable bit */
+#define M41T81REG_AMO_SQWE	0x40		/* square wave enable */
+#define M41T81REG_AMO_AFE	0x80		/* alarm flag enable flag */
+#define M41T81REG_ADT_RPT5	0x40		/* alarm repeat mode bit 5 */
+#define M41T81REG_ADT_RPT4	0x80		/* alarm repeat mode bit 4 */
+#define M41T81REG_AHR_RPT3	0x80		/* alarm repeat mode bit 3 */
+#define M41T81REG_AHR_HT	0x40		/* halt update bit */
+#define M41T81REG_AMN_RPT2	0x80		/* alarm repeat mode bit 2 */
+#define M41T81REG_ASC_RPT1	0x80		/* alarm repeat mode bit 1 */
+#define M41T81REG_FLG_AF	0x40		/* alarm flag (read only) */
+#define M41T81REG_FLG_WDF	0x80		/* watchdog flag (read only) */
+#define M41T81REG_SQW_RS0	0x10		/* sqw frequency bit 0 */
+#define M41T81REG_SQW_RS1	0x20		/* sqw frequency bit 1 */
+#define M41T81REG_SQW_RS2	0x40		/* sqw frequency bit 2 */
+#define M41T81REG_SQW_RS3	0x80		/* sqw frequency bit 3 */
+
+
+/*
+ * Register numbers
+ */
+
+#define M41T81REG_TSC	0x00		/* tenths/hundredths of second */
+#define M41T81REG_SC	0x01		/* seconds */
+#define M41T81REG_MN	0x02		/* minute */
+#define M41T81REG_HR	0x03		/* hour/century */
+#define M41T81REG_DY	0x04		/* day of week */
+#define M41T81REG_DT	0x05		/* date of month */
+#define M41T81REG_MO	0x06		/* month */
+#define M41T81REG_YR	0x07		/* year */
+#define M41T81REG_CTL	0x08		/* control */
+#define M41T81REG_WD	0x09		/* watchdog */
+#define M41T81REG_AMO	0x0A		/* alarm: month */
+#define M41T81REG_ADT	0x0B		/* alarm: date */
+#define M41T81REG_AHR	0x0C		/* alarm: hour */
+#define M41T81REG_AMN	0x0D		/* alarm: minute */
+#define M41T81REG_ASC	0x0E		/* alarm: second */
+#define M41T81REG_FLG	0x0F		/* flags */
+#define M41T81REG_SQW	0x13		/* square wave register */
+
+#define M41T81_CCR_ADDRESS	0x68
+
+#define SMB_CSR(reg)	IOADDR(A_SMB_REGISTER(1, reg))
+
+static int m41t81_read(uint8_t addr)
+{
+	while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
+		;
+
+	__raw_writeq(addr & 0xff, SMB_CSR(R_SMB_CMD));
+	__raw_writeq(V_SMB_ADDR(M41T81_CCR_ADDRESS) | V_SMB_TT_WR1BYTE,
+		     SMB_CSR(R_SMB_START));
+
+	while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
+		;
+
+	__raw_writeq(V_SMB_ADDR(M41T81_CCR_ADDRESS) | V_SMB_TT_RD1BYTE,
+		     SMB_CSR(R_SMB_START));
+
+	while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
+		;
+
+	if (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_ERROR) {
+		/* Clear error bit by writing a 1 */
+		__raw_writeq(M_SMB_ERROR, SMB_CSR(R_SMB_STATUS));
+		return -1;
+	}
+
+	return __raw_readq(SMB_CSR(R_SMB_DATA)) & 0xff;
+}
+
+static int m41t81_write(uint8_t addr, int b)
+{
+	while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
+		;
+
+	__raw_writeq(addr & 0xff, SMB_CSR(R_SMB_CMD));
+	__raw_writeq(b & 0xff, SMB_CSR(R_SMB_DATA));
+	__raw_writeq(V_SMB_ADDR(M41T81_CCR_ADDRESS) | V_SMB_TT_WR2BYTE,
+		     SMB_CSR(R_SMB_START));
+
+	while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
+		;
+
+	if (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_ERROR) {
+		/* Clear error bit by writing a 1 */
+		__raw_writeq(M_SMB_ERROR, SMB_CSR(R_SMB_STATUS));
+		return -1;
+	}
+
+	/* read the same byte again to make sure it is written */
+	__raw_writeq(V_SMB_ADDR(M41T81_CCR_ADDRESS) | V_SMB_TT_RD1BYTE,
+		     SMB_CSR(R_SMB_START));
+
+	while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
+		;
+
+	return 0;
+}
+
+int m41t81_set_time(time64_t t)
+{
+	struct rtc_time tm;
+	unsigned long flags;
+
+	/* Note we don't care about the century */
+	rtc_time64_to_tm(t, &tm);
+
+	/*
+	 * Note the write order matters as it ensures the correctness.
+	 * When we write sec, 10th sec is clear.  It is reasonable to
+	 * believe we should finish writing min within a second.
+	 */
+
+	spin_lock_irqsave(&rtc_lock, flags);
+	tm.tm_sec = bin2bcd(tm.tm_sec);
+	m41t81_write(M41T81REG_SC, tm.tm_sec);
+
+	tm.tm_min = bin2bcd(tm.tm_min);
+	m41t81_write(M41T81REG_MN, tm.tm_min);
+
+	tm.tm_hour = bin2bcd(tm.tm_hour);
+	tm.tm_hour = (tm.tm_hour & 0x3f) | (m41t81_read(M41T81REG_HR) & 0xc0);
+	m41t81_write(M41T81REG_HR, tm.tm_hour);
+
+	/* tm_wday starts from 0 to 6 */
+	if (tm.tm_wday == 0) tm.tm_wday = 7;
+	tm.tm_wday = bin2bcd(tm.tm_wday);
+	m41t81_write(M41T81REG_DY, tm.tm_wday);
+
+	tm.tm_mday = bin2bcd(tm.tm_mday);
+	m41t81_write(M41T81REG_DT, tm.tm_mday);
+
+	/* tm_mon starts from 0, *ick* */
+	tm.tm_mon ++;
+	tm.tm_mon = bin2bcd(tm.tm_mon);
+	m41t81_write(M41T81REG_MO, tm.tm_mon);
+
+	/* we don't do century, everything is beyond 2000 */
+	tm.tm_year %= 100;
+	tm.tm_year = bin2bcd(tm.tm_year);
+	m41t81_write(M41T81REG_YR, tm.tm_year);
+	spin_unlock_irqrestore(&rtc_lock, flags);
+
+	return 0;
+}
+
+time64_t m41t81_get_time(void)
+{
+	unsigned int year, mon, day, hour, min, sec;
+	unsigned long flags;
+
+	/*
+	 * min is valid if two reads of sec are the same.
+	 */
+	for (;;) {
+		spin_lock_irqsave(&rtc_lock, flags);
+		sec = m41t81_read(M41T81REG_SC);
+		min = m41t81_read(M41T81REG_MN);
+		if (sec == m41t81_read(M41T81REG_SC)) break;
+		spin_unlock_irqrestore(&rtc_lock, flags);
+	}
+	hour = m41t81_read(M41T81REG_HR) & 0x3f;
+	day = m41t81_read(M41T81REG_DT);
+	mon = m41t81_read(M41T81REG_MO);
+	year = m41t81_read(M41T81REG_YR);
+	spin_unlock_irqrestore(&rtc_lock, flags);
+
+	sec = bcd2bin(sec);
+	min = bcd2bin(min);
+	hour = bcd2bin(hour);
+	day = bcd2bin(day);
+	mon = bcd2bin(mon);
+	year = bcd2bin(year);
+
+	year += 2000;
+
+	return mktime64(year, mon, day, hour, min, sec);
+}
+
+int m41t81_probe(void)
+{
+	unsigned int tmp;
+
+	/* enable chip if it is not enabled yet */
+	tmp = m41t81_read(M41T81REG_SC);
+	m41t81_write(M41T81REG_SC, tmp & 0x7f);
+
+	return m41t81_read(M41T81REG_SC) != -1;
+}