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, 322 insertions, 0 deletions

diff --git a/drivers/gpu/drm/lima/lima_vm.c b/drivers/gpu/drm/lima/lima_vm.c
new file mode 100644
index 000000000..2b2739adc
--- /dev/null
+++ b/drivers/gpu/drm/lima/lima_vm.c
@@ -0,0 +1,322 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/* Copyright 2017-2019 Qiang Yu <yuq825@gmail.com> */
+
+#include <linux/slab.h>
+#include <linux/dma-mapping.h>
+
+#include "lima_device.h"
+#include "lima_vm.h"
+#include "lima_gem.h"
+#include "lima_regs.h"
+
+struct lima_bo_va {
+	struct list_head list;
+	unsigned int ref_count;
+
+	struct drm_mm_node node;
+
+	struct lima_vm *vm;
+};
+
+#define LIMA_VM_PD_SHIFT 22
+#define LIMA_VM_PT_SHIFT 12
+#define LIMA_VM_PB_SHIFT (LIMA_VM_PD_SHIFT + LIMA_VM_NUM_PT_PER_BT_SHIFT)
+#define LIMA_VM_BT_SHIFT LIMA_VM_PT_SHIFT
+
+#define LIMA_VM_PT_MASK ((1 << LIMA_VM_PD_SHIFT) - 1)
+#define LIMA_VM_BT_MASK ((1 << LIMA_VM_PB_SHIFT) - 1)
+
+#define LIMA_PDE(va) (va >> LIMA_VM_PD_SHIFT)
+#define LIMA_PTE(va) ((va & LIMA_VM_PT_MASK) >> LIMA_VM_PT_SHIFT)
+#define LIMA_PBE(va) (va >> LIMA_VM_PB_SHIFT)
+#define LIMA_BTE(va) ((va & LIMA_VM_BT_MASK) >> LIMA_VM_BT_SHIFT)
+
+
+static void lima_vm_unmap_range(struct lima_vm *vm, u32 start, u32 end)
+{
+	u32 addr;
+
+	for (addr = start; addr <= end; addr += LIMA_PAGE_SIZE) {
+		u32 pbe = LIMA_PBE(addr);
+		u32 bte = LIMA_BTE(addr);
+
+		vm->bts[pbe].cpu[bte] = 0;
+	}
+}
+
+static int lima_vm_map_page(struct lima_vm *vm, dma_addr_t pa, u32 va)
+{
+	u32 pbe = LIMA_PBE(va);
+	u32 bte = LIMA_BTE(va);
+
+	if (!vm->bts[pbe].cpu) {
+		dma_addr_t pts;
+		u32 *pd;
+		int j;
+
+		vm->bts[pbe].cpu = dma_alloc_wc(
+			vm->dev->dev, LIMA_PAGE_SIZE << LIMA_VM_NUM_PT_PER_BT_SHIFT,
+			&vm->bts[pbe].dma, GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO);
+		if (!vm->bts[pbe].cpu)
+			return -ENOMEM;
+
+		pts = vm->bts[pbe].dma;
+		pd = vm->pd.cpu + (pbe << LIMA_VM_NUM_PT_PER_BT_SHIFT);
+		for (j = 0; j < LIMA_VM_NUM_PT_PER_BT; j++) {
+			pd[j] = pts | LIMA_VM_FLAG_PRESENT;
+			pts += LIMA_PAGE_SIZE;
+		}
+	}
+
+	vm->bts[pbe].cpu[bte] = pa | LIMA_VM_FLAGS_CACHE;
+
+	return 0;
+}
+
+static struct lima_bo_va *
+lima_vm_bo_find(struct lima_vm *vm, struct lima_bo *bo)
+{
+	struct lima_bo_va *bo_va, *ret = NULL;
+
+	list_for_each_entry(bo_va, &bo->va, list) {
+		if (bo_va->vm == vm) {
+			ret = bo_va;
+			break;
+		}
+	}
+
+	return ret;
+}
+
+int lima_vm_bo_add(struct lima_vm *vm, struct lima_bo *bo, bool create)
+{
+	struct lima_bo_va *bo_va;
+	struct sg_dma_page_iter sg_iter;
+	int offset = 0, err;
+
+	mutex_lock(&bo->lock);
+
+	bo_va = lima_vm_bo_find(vm, bo);
+	if (bo_va) {
+		bo_va->ref_count++;
+		mutex_unlock(&bo->lock);
+		return 0;
+	}
+
+	/* should not create new bo_va if not asked by caller */
+	if (!create) {
+		mutex_unlock(&bo->lock);
+		return -ENOENT;
+	}
+
+	bo_va = kzalloc(sizeof(*bo_va), GFP_KERNEL);
+	if (!bo_va) {
+		err = -ENOMEM;
+		goto err_out0;
+	}
+
+	bo_va->vm = vm;
+	bo_va->ref_count = 1;
+
+	mutex_lock(&vm->lock);
+
+	err = drm_mm_insert_node(&vm->mm, &bo_va->node, lima_bo_size(bo));
+	if (err)
+		goto err_out1;
+
+	for_each_sgtable_dma_page(bo->base.sgt, &sg_iter, 0) {
+		err = lima_vm_map_page(vm, sg_page_iter_dma_address(&sg_iter),
+				       bo_va->node.start + offset);
+		if (err)
+			goto err_out2;
+
+		offset += PAGE_SIZE;
+	}
+
+	mutex_unlock(&vm->lock);
+
+	list_add_tail(&bo_va->list, &bo->va);
+
+	mutex_unlock(&bo->lock);
+	return 0;
+
+err_out2:
+	if (offset)
+		lima_vm_unmap_range(vm, bo_va->node.start, bo_va->node.start + offset - 1);
+	drm_mm_remove_node(&bo_va->node);
+err_out1:
+	mutex_unlock(&vm->lock);
+	kfree(bo_va);
+err_out0:
+	mutex_unlock(&bo->lock);
+	return err;
+}
+
+void lima_vm_bo_del(struct lima_vm *vm, struct lima_bo *bo)
+{
+	struct lima_bo_va *bo_va;
+	u32 size;
+
+	mutex_lock(&bo->lock);
+
+	bo_va = lima_vm_bo_find(vm, bo);
+	if (--bo_va->ref_count > 0) {
+		mutex_unlock(&bo->lock);
+		return;
+	}
+
+	mutex_lock(&vm->lock);
+
+	size = bo->heap_size ? bo->heap_size : bo_va->node.size;
+	lima_vm_unmap_range(vm, bo_va->node.start,
+			    bo_va->node.start + size - 1);
+
+	drm_mm_remove_node(&bo_va->node);
+
+	mutex_unlock(&vm->lock);
+
+	list_del(&bo_va->list);
+
+	mutex_unlock(&bo->lock);
+
+	kfree(bo_va);
+}
+
+u32 lima_vm_get_va(struct lima_vm *vm, struct lima_bo *bo)
+{
+	struct lima_bo_va *bo_va;
+	u32 ret;
+
+	mutex_lock(&bo->lock);
+
+	bo_va = lima_vm_bo_find(vm, bo);
+	ret = bo_va->node.start;
+
+	mutex_unlock(&bo->lock);
+
+	return ret;
+}
+
+struct lima_vm *lima_vm_create(struct lima_device *dev)
+{
+	struct lima_vm *vm;
+
+	vm = kzalloc(sizeof(*vm), GFP_KERNEL);
+	if (!vm)
+		return NULL;
+
+	vm->dev = dev;
+	mutex_init(&vm->lock);
+	kref_init(&vm->refcount);
+
+	vm->pd.cpu = dma_alloc_wc(dev->dev, LIMA_PAGE_SIZE, &vm->pd.dma,
+				  GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO);
+	if (!vm->pd.cpu)
+		goto err_out0;
+
+	if (dev->dlbu_cpu) {
+		int err = lima_vm_map_page(
+			vm, dev->dlbu_dma, LIMA_VA_RESERVE_DLBU);
+		if (err)
+			goto err_out1;
+	}
+
+	drm_mm_init(&vm->mm, dev->va_start, dev->va_end - dev->va_start);
+
+	return vm;
+
+err_out1:
+	dma_free_wc(dev->dev, LIMA_PAGE_SIZE, vm->pd.cpu, vm->pd.dma);
+err_out0:
+	kfree(vm);
+	return NULL;
+}
+
+void lima_vm_release(struct kref *kref)
+{
+	struct lima_vm *vm = container_of(kref, struct lima_vm, refcount);
+	int i;
+
+	drm_mm_takedown(&vm->mm);
+
+	for (i = 0; i < LIMA_VM_NUM_BT; i++) {
+		if (vm->bts[i].cpu)
+			dma_free_wc(vm->dev->dev, LIMA_PAGE_SIZE << LIMA_VM_NUM_PT_PER_BT_SHIFT,
+				    vm->bts[i].cpu, vm->bts[i].dma);
+	}
+
+	if (vm->pd.cpu)
+		dma_free_wc(vm->dev->dev, LIMA_PAGE_SIZE, vm->pd.cpu, vm->pd.dma);
+
+	kfree(vm);
+}
+
+void lima_vm_print(struct lima_vm *vm)
+{
+	int i, j, k;
+	u32 *pd, *pt;
+
+	if (!vm->pd.cpu)
+		return;
+
+	pd = vm->pd.cpu;
+	for (i = 0; i < LIMA_VM_NUM_BT; i++) {
+		if (!vm->bts[i].cpu)
+			continue;
+
+		pt = vm->bts[i].cpu;
+		for (j = 0; j < LIMA_VM_NUM_PT_PER_BT; j++) {
+			int idx = (i << LIMA_VM_NUM_PT_PER_BT_SHIFT) + j;
+
+			printk(KERN_INFO "lima vm pd %03x:%08x\n", idx, pd[idx]);
+
+			for (k = 0; k < LIMA_PAGE_ENT_NUM; k++) {
+				u32 pte = *pt++;
+
+				if (pte)
+					printk(KERN_INFO "  pt %03x:%08x\n", k, pte);
+			}
+		}
+	}
+}
+
+int lima_vm_map_bo(struct lima_vm *vm, struct lima_bo *bo, int pageoff)
+{
+	struct lima_bo_va *bo_va;
+	struct sg_dma_page_iter sg_iter;
+	int offset = 0, err;
+	u32 base;
+
+	mutex_lock(&bo->lock);
+
+	bo_va = lima_vm_bo_find(vm, bo);
+	if (!bo_va) {
+		err = -ENOENT;
+		goto err_out0;
+	}
+
+	mutex_lock(&vm->lock);
+
+	base = bo_va->node.start + (pageoff << PAGE_SHIFT);
+	for_each_sgtable_dma_page(bo->base.sgt, &sg_iter, pageoff) {
+		err = lima_vm_map_page(vm, sg_page_iter_dma_address(&sg_iter),
+				       base + offset);
+		if (err)
+			goto err_out1;
+
+		offset += PAGE_SIZE;
+	}
+
+	mutex_unlock(&vm->lock);
+
+	mutex_unlock(&bo->lock);
+	return 0;
+
+err_out1:
+	if (offset)
+		lima_vm_unmap_range(vm, base, base + offset - 1);
+	mutex_unlock(&vm->lock);
+err_out0:
+	mutex_unlock(&bo->lock);
+	return err;
+}