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, 337 insertions, 0 deletions

diff --git a/arch/alpha/kernel/ptrace.c b/arch/alpha/kernel/ptrace.c
new file mode 100644
index 000000000..a1a239ea0
--- /dev/null
+++ b/arch/alpha/kernel/ptrace.c
@@ -0,0 +1,337 @@
+// SPDX-License-Identifier: GPL-2.0
+/* ptrace.c */
+/* By Ross Biro 1/23/92 */
+/* edited by Linus Torvalds */
+/* mangled further by Bob Manson (manson@santafe.edu) */
+/* more mutilation by David Mosberger (davidm@azstarnet.com) */
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/sched/task_stack.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/errno.h>
+#include <linux/ptrace.h>
+#include <linux/user.h>
+#include <linux/security.h>
+#include <linux/signal.h>
+#include <linux/audit.h>
+
+#include <linux/uaccess.h>
+#include <asm/fpu.h>
+
+#include "proto.h"
+
+#define DEBUG	DBG_MEM
+#undef DEBUG
+
+#ifdef DEBUG
+enum {
+	DBG_MEM		= (1<<0),
+	DBG_BPT		= (1<<1),
+	DBG_MEM_ALL	= (1<<2)
+};
+#define DBG(fac,args)	{if ((fac) & DEBUG) printk args;}
+#else
+#define DBG(fac,args)
+#endif
+
+#define BREAKINST	0x00000080	/* call_pal bpt */
+
+/*
+ * does not yet catch signals sent when the child dies.
+ * in exit.c or in signal.c.
+ */
+
+/*
+ * Processes always block with the following stack-layout:
+ *
+ *  +================================+ <---- task + 2*PAGE_SIZE
+ *  | PALcode saved frame (ps, pc,   | ^
+ *  | gp, a0, a1, a2)		     | |
+ *  +================================+ | struct pt_regs
+ *  |	        		     | |
+ *  | frame generated by SAVE_ALL    | |
+ *  |	        		     | v
+ *  +================================+
+ *  |	        		     | ^
+ *  | frame saved by do_switch_stack | | struct switch_stack
+ *  |	        		     | v
+ *  +================================+
+ */
+
+/* 
+ * The following table maps a register index into the stack offset at
+ * which the register is saved.  Register indices are 0-31 for integer
+ * regs, 32-63 for fp regs, and 64 for the pc.  Notice that sp and
+ * zero have no stack-slot and need to be treated specially (see
+ * get_reg/put_reg below).
+ */
+enum {
+	REG_R0 = 0, REG_F0 = 32, REG_FPCR = 63, REG_PC = 64
+};
+
+#define PT_REG(reg) \
+  (PAGE_SIZE*2 - sizeof(struct pt_regs) + offsetof(struct pt_regs, reg))
+
+#define SW_REG(reg) \
+ (PAGE_SIZE*2 - sizeof(struct pt_regs) - sizeof(struct switch_stack) \
+  + offsetof(struct switch_stack, reg))
+
+static int regoff[] = {
+	PT_REG(	   r0), PT_REG(	   r1), PT_REG(	   r2), PT_REG(	  r3),
+	PT_REG(	   r4), PT_REG(	   r5), PT_REG(	   r6), PT_REG(	  r7),
+	PT_REG(	   r8), SW_REG(	   r9), SW_REG(	  r10), SW_REG(	 r11),
+	SW_REG(	  r12), SW_REG(	  r13), SW_REG(	  r14), SW_REG(	 r15),
+	PT_REG(	  r16), PT_REG(	  r17), PT_REG(	  r18), PT_REG(	 r19),
+	PT_REG(	  r20), PT_REG(	  r21), PT_REG(	  r22), PT_REG(	 r23),
+	PT_REG(	  r24), PT_REG(	  r25), PT_REG(	  r26), PT_REG(	 r27),
+	PT_REG(	  r28), PT_REG(	   gp),		   -1,		   -1,
+	SW_REG(fp[ 0]), SW_REG(fp[ 1]), SW_REG(fp[ 2]), SW_REG(fp[ 3]),
+	SW_REG(fp[ 4]), SW_REG(fp[ 5]), SW_REG(fp[ 6]), SW_REG(fp[ 7]),
+	SW_REG(fp[ 8]), SW_REG(fp[ 9]), SW_REG(fp[10]), SW_REG(fp[11]),
+	SW_REG(fp[12]), SW_REG(fp[13]), SW_REG(fp[14]), SW_REG(fp[15]),
+	SW_REG(fp[16]), SW_REG(fp[17]), SW_REG(fp[18]), SW_REG(fp[19]),
+	SW_REG(fp[20]), SW_REG(fp[21]), SW_REG(fp[22]), SW_REG(fp[23]),
+	SW_REG(fp[24]), SW_REG(fp[25]), SW_REG(fp[26]), SW_REG(fp[27]),
+	SW_REG(fp[28]), SW_REG(fp[29]), SW_REG(fp[30]), SW_REG(fp[31]),
+	PT_REG(	   pc)
+};
+
+static unsigned long zero;
+
+/*
+ * Get address of register REGNO in task TASK.
+ */
+static unsigned long *
+get_reg_addr(struct task_struct * task, unsigned long regno)
+{
+	unsigned long *addr;
+
+	if (regno == 30) {
+		addr = &task_thread_info(task)->pcb.usp;
+	} else if (regno == 65) {
+		addr = &task_thread_info(task)->pcb.unique;
+	} else if (regno == 31 || regno > 65) {
+		zero = 0;
+		addr = &zero;
+	} else {
+		addr = task_stack_page(task) + regoff[regno];
+	}
+	return addr;
+}
+
+/*
+ * Get contents of register REGNO in task TASK.
+ */
+static unsigned long
+get_reg(struct task_struct * task, unsigned long regno)
+{
+	/* Special hack for fpcr -- combine hardware and software bits.  */
+	if (regno == 63) {
+		unsigned long fpcr = *get_reg_addr(task, regno);
+		unsigned long swcr
+		  = task_thread_info(task)->ieee_state & IEEE_SW_MASK;
+		swcr = swcr_update_status(swcr, fpcr);
+		return fpcr | swcr;
+	}
+	return *get_reg_addr(task, regno);
+}
+
+/*
+ * Write contents of register REGNO in task TASK.
+ */
+static int
+put_reg(struct task_struct *task, unsigned long regno, unsigned long data)
+{
+	if (regno == 63) {
+		task_thread_info(task)->ieee_state
+		  = ((task_thread_info(task)->ieee_state & ~IEEE_SW_MASK)
+		     | (data & IEEE_SW_MASK));
+		data = (data & FPCR_DYN_MASK) | ieee_swcr_to_fpcr(data);
+	}
+	*get_reg_addr(task, regno) = data;
+	return 0;
+}
+
+static inline int
+read_int(struct task_struct *task, unsigned long addr, int * data)
+{
+	int copied = access_process_vm(task, addr, data, sizeof(int),
+			FOLL_FORCE);
+	return (copied == sizeof(int)) ? 0 : -EIO;
+}
+
+static inline int
+write_int(struct task_struct *task, unsigned long addr, int data)
+{
+	int copied = access_process_vm(task, addr, &data, sizeof(int),
+			FOLL_FORCE | FOLL_WRITE);
+	return (copied == sizeof(int)) ? 0 : -EIO;
+}
+
+/*
+ * Set breakpoint.
+ */
+int
+ptrace_set_bpt(struct task_struct * child)
+{
+	int displ, i, res, reg_b, nsaved = 0;
+	unsigned int insn, op_code;
+	unsigned long pc;
+
+	pc  = get_reg(child, REG_PC);
+	res = read_int(child, pc, (int *) &insn);
+	if (res < 0)
+		return res;
+
+	op_code = insn >> 26;
+	if (op_code >= 0x30) {
+		/*
+		 * It's a branch: instead of trying to figure out
+		 * whether the branch will be taken or not, we'll put
+		 * a breakpoint at either location.  This is simpler,
+		 * more reliable, and probably not a whole lot slower
+		 * than the alternative approach of emulating the
+		 * branch (emulation can be tricky for fp branches).
+		 */
+		displ = ((s32)(insn << 11)) >> 9;
+		task_thread_info(child)->bpt_addr[nsaved++] = pc + 4;
+		if (displ)		/* guard against unoptimized code */
+			task_thread_info(child)->bpt_addr[nsaved++]
+			  = pc + 4 + displ;
+		DBG(DBG_BPT, ("execing branch\n"));
+	} else if (op_code == 0x1a) {
+		reg_b = (insn >> 16) & 0x1f;
+		task_thread_info(child)->bpt_addr[nsaved++] = get_reg(child, reg_b);
+		DBG(DBG_BPT, ("execing jump\n"));
+	} else {
+		task_thread_info(child)->bpt_addr[nsaved++] = pc + 4;
+		DBG(DBG_BPT, ("execing normal insn\n"));
+	}
+
+	/* install breakpoints: */
+	for (i = 0; i < nsaved; ++i) {
+		res = read_int(child, task_thread_info(child)->bpt_addr[i],
+			       (int *) &insn);
+		if (res < 0)
+			return res;
+		task_thread_info(child)->bpt_insn[i] = insn;
+		DBG(DBG_BPT, ("    -> next_pc=%lx\n",
+			      task_thread_info(child)->bpt_addr[i]));
+		res = write_int(child, task_thread_info(child)->bpt_addr[i],
+				BREAKINST);
+		if (res < 0)
+			return res;
+	}
+	task_thread_info(child)->bpt_nsaved = nsaved;
+	return 0;
+}
+
+/*
+ * Ensure no single-step breakpoint is pending.  Returns non-zero
+ * value if child was being single-stepped.
+ */
+int
+ptrace_cancel_bpt(struct task_struct * child)
+{
+	int i, nsaved = task_thread_info(child)->bpt_nsaved;
+
+	task_thread_info(child)->bpt_nsaved = 0;
+
+	if (nsaved > 2) {
+		printk("ptrace_cancel_bpt: bogus nsaved: %d!\n", nsaved);
+		nsaved = 2;
+	}
+
+	for (i = 0; i < nsaved; ++i) {
+		write_int(child, task_thread_info(child)->bpt_addr[i],
+			  task_thread_info(child)->bpt_insn[i]);
+	}
+	return (nsaved != 0);
+}
+
+void user_enable_single_step(struct task_struct *child)
+{
+	/* Mark single stepping.  */
+	task_thread_info(child)->bpt_nsaved = -1;
+}
+
+void user_disable_single_step(struct task_struct *child)
+{
+	ptrace_cancel_bpt(child);
+}
+
+/*
+ * Called by kernel/ptrace.c when detaching..
+ *
+ * Make sure the single step bit is not set.
+ */
+void ptrace_disable(struct task_struct *child)
+{ 
+	user_disable_single_step(child);
+}
+
+long arch_ptrace(struct task_struct *child, long request,
+		 unsigned long addr, unsigned long data)
+{
+	unsigned long tmp;
+	size_t copied;
+	long ret;
+
+	switch (request) {
+	/* When I and D space are separate, these will need to be fixed.  */
+	case PTRACE_PEEKTEXT: /* read word at location addr. */
+	case PTRACE_PEEKDATA:
+		copied = ptrace_access_vm(child, addr, &tmp, sizeof(tmp),
+				FOLL_FORCE);
+		ret = -EIO;
+		if (copied != sizeof(tmp))
+			break;
+		
+		force_successful_syscall_return();
+		ret = tmp;
+		break;
+
+	/* Read register number ADDR. */
+	case PTRACE_PEEKUSR:
+		force_successful_syscall_return();
+		ret = get_reg(child, addr);
+		DBG(DBG_MEM, ("peek $%lu->%#lx\n", addr, ret));
+		break;
+
+	/* When I and D space are separate, this will have to be fixed.  */
+	case PTRACE_POKETEXT: /* write the word at location addr. */
+	case PTRACE_POKEDATA:
+		ret = generic_ptrace_pokedata(child, addr, data);
+		break;
+
+	case PTRACE_POKEUSR: /* write the specified register */
+		DBG(DBG_MEM, ("poke $%lu<-%#lx\n", addr, data));
+		ret = put_reg(child, addr, data);
+		break;
+	default:
+		ret = ptrace_request(child, request, addr, data);
+		break;
+	}
+	return ret;
+}
+
+asmlinkage unsigned long syscall_trace_enter(void)
+{
+	unsigned long ret = 0;
+	struct pt_regs *regs = current_pt_regs();
+	if (test_thread_flag(TIF_SYSCALL_TRACE) &&
+	    ptrace_report_syscall_entry(current_pt_regs()))
+		ret = -1UL;
+	audit_syscall_entry(regs->r0, regs->r16, regs->r17, regs->r18, regs->r19);
+	return ret ?: current_pt_regs()->r0;
+}
+
+asmlinkage void
+syscall_trace_leave(void)
+{
+	audit_syscall_exit(current_pt_regs());
+	if (test_thread_flag(TIF_SYSCALL_TRACE))
+		ptrace_report_syscall_exit(current_pt_regs(), 0);
+}