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, 289 insertions, 0 deletions

diff --git a/drivers/crypto/hisilicon/sgl.c b/drivers/crypto/hisilicon/sgl.c
new file mode 100644
index 000000000..09586a837
--- /dev/null
+++ b/drivers/crypto/hisilicon/sgl.c
@@ -0,0 +1,289 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2019 HiSilicon Limited. */
+#include <linux/align.h>
+#include <linux/dma-mapping.h>
+#include <linux/hisi_acc_qm.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+
+#define HISI_ACC_SGL_SGE_NR_MIN		1
+#define HISI_ACC_SGL_NR_MAX		256
+#define HISI_ACC_SGL_ALIGN_SIZE		64
+#define HISI_ACC_MEM_BLOCK_NR		5
+
+struct acc_hw_sge {
+	dma_addr_t buf;
+	void *page_ctrl;
+	__le32 len;
+	__le32 pad;
+	__le32 pad0;
+	__le32 pad1;
+};
+
+/* use default sgl head size 64B */
+struct hisi_acc_hw_sgl {
+	dma_addr_t next_dma;
+	__le16 entry_sum_in_chain;
+	__le16 entry_sum_in_sgl;
+	__le16 entry_length_in_sgl;
+	__le16 pad0;
+	__le64 pad1[5];
+	struct hisi_acc_hw_sgl *next;
+	struct acc_hw_sge sge_entries[];
+} __aligned(1);
+
+struct hisi_acc_sgl_pool {
+	struct mem_block {
+		struct hisi_acc_hw_sgl *sgl;
+		dma_addr_t sgl_dma;
+		size_t size;
+	} mem_block[HISI_ACC_MEM_BLOCK_NR];
+	u32 sgl_num_per_block;
+	u32 block_num;
+	u32 count;
+	u32 sge_nr;
+	size_t sgl_size;
+};
+
+/**
+ * hisi_acc_create_sgl_pool() - Create a hw sgl pool.
+ * @dev: The device which hw sgl pool belongs to.
+ * @count: Count of hisi_acc_hw_sgl in pool.
+ * @sge_nr: The count of sge in hw_sgl
+ *
+ * This function creates a hw sgl pool, after this user can get hw sgl memory
+ * from it.
+ */
+struct hisi_acc_sgl_pool *hisi_acc_create_sgl_pool(struct device *dev,
+						   u32 count, u32 sge_nr)
+{
+	u32 sgl_size, block_size, sgl_num_per_block, block_num, remain_sgl;
+	struct hisi_acc_sgl_pool *pool;
+	struct mem_block *block;
+	u32 i, j;
+
+	if (!dev || !count || !sge_nr || sge_nr > HISI_ACC_SGL_SGE_NR_MAX)
+		return ERR_PTR(-EINVAL);
+
+	sgl_size = ALIGN(sizeof(struct acc_hw_sge) * sge_nr +
+			 sizeof(struct hisi_acc_hw_sgl),
+			 HISI_ACC_SGL_ALIGN_SIZE);
+
+	/*
+	 * the pool may allocate a block of memory of size PAGE_SIZE * 2^(MAX_ORDER - 1),
+	 * block size may exceed 2^31 on ia64, so the max of block size is 2^31
+	 */
+	block_size = 1 << (PAGE_SHIFT + MAX_ORDER <= 32 ?
+			   PAGE_SHIFT + MAX_ORDER - 1 : 31);
+	sgl_num_per_block = block_size / sgl_size;
+	block_num = count / sgl_num_per_block;
+	remain_sgl = count % sgl_num_per_block;
+
+	if ((!remain_sgl && block_num > HISI_ACC_MEM_BLOCK_NR) ||
+	    (remain_sgl > 0 && block_num > HISI_ACC_MEM_BLOCK_NR - 1))
+		return ERR_PTR(-EINVAL);
+
+	pool = kzalloc(sizeof(*pool), GFP_KERNEL);
+	if (!pool)
+		return ERR_PTR(-ENOMEM);
+	block = pool->mem_block;
+
+	for (i = 0; i < block_num; i++) {
+		block[i].sgl = dma_alloc_coherent(dev, block_size,
+						  &block[i].sgl_dma,
+						  GFP_KERNEL);
+		if (!block[i].sgl) {
+			dev_err(dev, "Fail to allocate hw SG buffer!\n");
+			goto err_free_mem;
+		}
+
+		block[i].size = block_size;
+	}
+
+	if (remain_sgl > 0) {
+		block[i].sgl = dma_alloc_coherent(dev, remain_sgl * sgl_size,
+						  &block[i].sgl_dma,
+						  GFP_KERNEL);
+		if (!block[i].sgl) {
+			dev_err(dev, "Fail to allocate remained hw SG buffer!\n");
+			goto err_free_mem;
+		}
+
+		block[i].size = remain_sgl * sgl_size;
+	}
+
+	pool->sgl_num_per_block = sgl_num_per_block;
+	pool->block_num = remain_sgl ? block_num + 1 : block_num;
+	pool->count = count;
+	pool->sgl_size = sgl_size;
+	pool->sge_nr = sge_nr;
+
+	return pool;
+
+err_free_mem:
+	for (j = 0; j < i; j++) {
+		dma_free_coherent(dev, block_size, block[j].sgl,
+				  block[j].sgl_dma);
+	}
+	kfree_sensitive(pool);
+	return ERR_PTR(-ENOMEM);
+}
+EXPORT_SYMBOL_GPL(hisi_acc_create_sgl_pool);
+
+/**
+ * hisi_acc_free_sgl_pool() - Free a hw sgl pool.
+ * @dev: The device which hw sgl pool belongs to.
+ * @pool: Pointer of pool.
+ *
+ * This function frees memory of a hw sgl pool.
+ */
+void hisi_acc_free_sgl_pool(struct device *dev, struct hisi_acc_sgl_pool *pool)
+{
+	struct mem_block *block;
+	int i;
+
+	if (!dev || !pool)
+		return;
+
+	block = pool->mem_block;
+
+	for (i = 0; i < pool->block_num; i++)
+		dma_free_coherent(dev, block[i].size, block[i].sgl,
+				  block[i].sgl_dma);
+
+	kfree(pool);
+}
+EXPORT_SYMBOL_GPL(hisi_acc_free_sgl_pool);
+
+static struct hisi_acc_hw_sgl *acc_get_sgl(struct hisi_acc_sgl_pool *pool,
+					   u32 index, dma_addr_t *hw_sgl_dma)
+{
+	struct mem_block *block;
+	u32 block_index, offset;
+
+	if (!pool || !hw_sgl_dma || index >= pool->count)
+		return ERR_PTR(-EINVAL);
+
+	block = pool->mem_block;
+	block_index = index / pool->sgl_num_per_block;
+	offset = index % pool->sgl_num_per_block;
+
+	*hw_sgl_dma = block[block_index].sgl_dma + pool->sgl_size * offset;
+	return (void *)block[block_index].sgl + pool->sgl_size * offset;
+}
+
+static void sg_map_to_hw_sg(struct scatterlist *sgl,
+			    struct acc_hw_sge *hw_sge)
+{
+	hw_sge->buf = sg_dma_address(sgl);
+	hw_sge->len = cpu_to_le32(sg_dma_len(sgl));
+	hw_sge->page_ctrl = sg_virt(sgl);
+}
+
+static void inc_hw_sgl_sge(struct hisi_acc_hw_sgl *hw_sgl)
+{
+	u16 var = le16_to_cpu(hw_sgl->entry_sum_in_sgl);
+
+	var++;
+	hw_sgl->entry_sum_in_sgl = cpu_to_le16(var);
+}
+
+static void update_hw_sgl_sum_sge(struct hisi_acc_hw_sgl *hw_sgl, u16 sum)
+{
+	hw_sgl->entry_sum_in_chain = cpu_to_le16(sum);
+}
+
+static void clear_hw_sgl_sge(struct hisi_acc_hw_sgl *hw_sgl)
+{
+	struct acc_hw_sge *hw_sge = hw_sgl->sge_entries;
+	int i;
+
+	for (i = 0; i < le16_to_cpu(hw_sgl->entry_sum_in_sgl); i++) {
+		hw_sge[i].page_ctrl = NULL;
+		hw_sge[i].buf = 0;
+		hw_sge[i].len = 0;
+	}
+}
+
+/**
+ * hisi_acc_sg_buf_map_to_hw_sgl - Map a scatterlist to a hw sgl.
+ * @dev: The device which hw sgl belongs to.
+ * @sgl: Scatterlist which will be mapped to hw sgl.
+ * @pool: Pool which hw sgl memory will be allocated in.
+ * @index: Index of hisi_acc_hw_sgl in pool.
+ * @hw_sgl_dma: The dma address of allocated hw sgl.
+ *
+ * This function builds hw sgl according input sgl, user can use hw_sgl_dma
+ * as src/dst in its BD. Only support single hw sgl currently.
+ */
+struct hisi_acc_hw_sgl *
+hisi_acc_sg_buf_map_to_hw_sgl(struct device *dev,
+			      struct scatterlist *sgl,
+			      struct hisi_acc_sgl_pool *pool,
+			      u32 index, dma_addr_t *hw_sgl_dma)
+{
+	struct hisi_acc_hw_sgl *curr_hw_sgl;
+	dma_addr_t curr_sgl_dma = 0;
+	struct acc_hw_sge *curr_hw_sge;
+	struct scatterlist *sg;
+	int i, sg_n, sg_n_mapped;
+
+	if (!dev || !sgl || !pool || !hw_sgl_dma)
+		return ERR_PTR(-EINVAL);
+
+	sg_n = sg_nents(sgl);
+
+	sg_n_mapped = dma_map_sg(dev, sgl, sg_n, DMA_BIDIRECTIONAL);
+	if (!sg_n_mapped) {
+		dev_err(dev, "DMA mapping for SG error!\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	if (sg_n_mapped > pool->sge_nr) {
+		dev_err(dev, "the number of entries in input scatterlist is bigger than SGL pool setting.\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	curr_hw_sgl = acc_get_sgl(pool, index, &curr_sgl_dma);
+	if (IS_ERR(curr_hw_sgl)) {
+		dev_err(dev, "Get SGL error!\n");
+		dma_unmap_sg(dev, sgl, sg_n, DMA_BIDIRECTIONAL);
+		return ERR_PTR(-ENOMEM);
+	}
+	curr_hw_sgl->entry_length_in_sgl = cpu_to_le16(pool->sge_nr);
+	curr_hw_sge = curr_hw_sgl->sge_entries;
+
+	for_each_sg(sgl, sg, sg_n_mapped, i) {
+		sg_map_to_hw_sg(sg, curr_hw_sge);
+		inc_hw_sgl_sge(curr_hw_sgl);
+		curr_hw_sge++;
+	}
+
+	update_hw_sgl_sum_sge(curr_hw_sgl, pool->sge_nr);
+	*hw_sgl_dma = curr_sgl_dma;
+
+	return curr_hw_sgl;
+}
+EXPORT_SYMBOL_GPL(hisi_acc_sg_buf_map_to_hw_sgl);
+
+/**
+ * hisi_acc_sg_buf_unmap() - Unmap allocated hw sgl.
+ * @dev: The device which hw sgl belongs to.
+ * @sgl: Related scatterlist.
+ * @hw_sgl: Virtual address of hw sgl.
+ *
+ * This function unmaps allocated hw sgl.
+ */
+void hisi_acc_sg_buf_unmap(struct device *dev, struct scatterlist *sgl,
+			   struct hisi_acc_hw_sgl *hw_sgl)
+{
+	if (!dev || !sgl || !hw_sgl)
+		return;
+
+	dma_unmap_sg(dev, sgl, sg_nents(sgl), DMA_BIDIRECTIONAL);
+	clear_hw_sgl_sge(hw_sgl);
+	hw_sgl->entry_sum_in_chain = 0;
+	hw_sgl->entry_sum_in_sgl = 0;
+	hw_sgl->entry_length_in_sgl = 0;
+}
+EXPORT_SYMBOL_GPL(hisi_acc_sg_buf_unmap);