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, 234 insertions, 0 deletions

diff --git a/drivers/net/ethernet/cavium/liquidio/response_manager.c b/drivers/net/ethernet/cavium/liquidio/response_manager.c
new file mode 100644
index 000000000..ac7747ccf
--- /dev/null
+++ b/drivers/net/ethernet/cavium/liquidio/response_manager.c
@@ -0,0 +1,234 @@
+/**********************************************************************
+ * Author: Cavium, Inc.
+ *
+ * Contact: support@cavium.com
+ *          Please include "LiquidIO" in the subject.
+ *
+ * Copyright (c) 2003-2016 Cavium, Inc.
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ **********************************************************************/
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include "liquidio_common.h"
+#include "octeon_droq.h"
+#include "octeon_iq.h"
+#include "response_manager.h"
+#include "octeon_device.h"
+#include "octeon_main.h"
+
+static void oct_poll_req_completion(struct work_struct *work);
+
+int octeon_setup_response_list(struct octeon_device *oct)
+{
+	int i, ret = 0;
+	struct cavium_wq *cwq;
+
+	for (i = 0; i < MAX_RESPONSE_LISTS; i++) {
+		INIT_LIST_HEAD(&oct->response_list[i].head);
+		spin_lock_init(&oct->response_list[i].lock);
+		atomic_set(&oct->response_list[i].pending_req_count, 0);
+	}
+	spin_lock_init(&oct->cmd_resp_wqlock);
+
+	oct->dma_comp_wq.wq = alloc_workqueue("dma-comp", WQ_MEM_RECLAIM, 0);
+	if (!oct->dma_comp_wq.wq) {
+		dev_err(&oct->pci_dev->dev, "failed to create wq thread\n");
+		return -ENOMEM;
+	}
+
+	cwq = &oct->dma_comp_wq;
+	INIT_DELAYED_WORK(&cwq->wk.work, oct_poll_req_completion);
+	cwq->wk.ctxptr = oct;
+	oct->cmd_resp_state = OCT_DRV_ONLINE;
+
+	return ret;
+}
+
+void octeon_delete_response_list(struct octeon_device *oct)
+{
+	cancel_delayed_work_sync(&oct->dma_comp_wq.wk.work);
+	destroy_workqueue(oct->dma_comp_wq.wq);
+}
+
+int lio_process_ordered_list(struct octeon_device *octeon_dev,
+			     u32 force_quit)
+{
+	struct octeon_response_list *ordered_sc_list;
+	struct octeon_soft_command *sc;
+	int request_complete = 0;
+	int resp_to_process = MAX_ORD_REQS_TO_PROCESS;
+	u32 status;
+	u64 status64;
+
+	octeon_free_sc_done_list(octeon_dev);
+
+	ordered_sc_list = &octeon_dev->response_list[OCTEON_ORDERED_SC_LIST];
+
+	do {
+		spin_lock_bh(&ordered_sc_list->lock);
+
+		if (list_empty(&ordered_sc_list->head)) {
+			spin_unlock_bh(&ordered_sc_list->lock);
+			return 1;
+		}
+
+		sc = list_first_entry(&ordered_sc_list->head,
+				      struct octeon_soft_command, node);
+
+		status = OCTEON_REQUEST_PENDING;
+
+		/* check if octeon has finished DMA'ing a response
+		 * to where rptr is pointing to
+		 */
+		status64 = *sc->status_word;
+
+		if (status64 != COMPLETION_WORD_INIT) {
+			/* This logic ensures that all 64b have been written.
+			 * 1. check byte 0 for non-FF
+			 * 2. if non-FF, then swap result from BE to host order
+			 * 3. check byte 7 (swapped to 0) for non-FF
+			 * 4. if non-FF, use the low 32-bit status code
+			 * 5. if either byte 0 or byte 7 is FF, don't use status
+			 */
+			if ((status64 & 0xff) != 0xff) {
+				octeon_swap_8B_data(&status64, 1);
+				if (((status64 & 0xff) != 0xff)) {
+					/* retrieve 16-bit firmware status */
+					status = (u32)(status64 & 0xffffULL);
+					if (status) {
+						status =
+						  FIRMWARE_STATUS_CODE(status);
+					} else {
+						/* i.e. no error */
+						status = OCTEON_REQUEST_DONE;
+					}
+				}
+			}
+		} else if (unlikely(force_quit) || (sc->expiry_time &&
+			time_after(jiffies, (unsigned long)sc->expiry_time))) {
+			struct octeon_instr_irh *irh =
+				(struct octeon_instr_irh *)&sc->cmd.cmd3.irh;
+
+			dev_err(&octeon_dev->pci_dev->dev, "%s: ", __func__);
+			dev_err(&octeon_dev->pci_dev->dev,
+				"cmd %x/%x/%llx/%llx failed, ",
+				irh->opcode, irh->subcode,
+				sc->cmd.cmd3.ossp[0], sc->cmd.cmd3.ossp[1]);
+			dev_err(&octeon_dev->pci_dev->dev,
+				"timeout (%ld, %ld)\n",
+				(long)jiffies, (long)sc->expiry_time);
+			status = OCTEON_REQUEST_TIMEOUT;
+		}
+
+		if (status != OCTEON_REQUEST_PENDING) {
+			sc->sc_status = status;
+
+			/* we have received a response or we have timed out */
+			/* remove node from linked list */
+			list_del(&sc->node);
+			atomic_dec(&octeon_dev->response_list
+				   [OCTEON_ORDERED_SC_LIST].
+				   pending_req_count);
+
+			if (!sc->callback) {
+				atomic_inc(&octeon_dev->response_list
+					   [OCTEON_DONE_SC_LIST].
+					   pending_req_count);
+				list_add_tail(&sc->node,
+					      &octeon_dev->response_list
+					      [OCTEON_DONE_SC_LIST].head);
+
+				if (unlikely(READ_ONCE(sc->caller_is_done))) {
+					/* caller does not wait for response
+					 * from firmware
+					 */
+					if (status != OCTEON_REQUEST_DONE) {
+						struct octeon_instr_irh *irh;
+
+						irh =
+						    (struct octeon_instr_irh *)
+						    &sc->cmd.cmd3.irh;
+						dev_dbg
+						    (&octeon_dev->pci_dev->dev,
+						    "%s: sc failed: opcode=%x, ",
+						    __func__, irh->opcode);
+						dev_dbg
+						    (&octeon_dev->pci_dev->dev,
+						    "subcode=%x, ossp[0]=%llx, ",
+						    irh->subcode,
+						    sc->cmd.cmd3.ossp[0]);
+						dev_dbg
+						    (&octeon_dev->pci_dev->dev,
+						    "ossp[1]=%llx, status=%d\n",
+						    sc->cmd.cmd3.ossp[1],
+						    status);
+					}
+				} else {
+					complete(&sc->complete);
+				}
+
+				spin_unlock_bh(&ordered_sc_list->lock);
+			} else {
+				/* sc with callback function */
+				if (status == OCTEON_REQUEST_TIMEOUT) {
+					atomic_inc(&octeon_dev->response_list
+						   [OCTEON_ZOMBIE_SC_LIST].
+						   pending_req_count);
+					list_add_tail(&sc->node,
+						      &octeon_dev->response_list
+						      [OCTEON_ZOMBIE_SC_LIST].
+						      head);
+				}
+
+				spin_unlock_bh(&ordered_sc_list->lock);
+
+				sc->callback(octeon_dev, status,
+					     sc->callback_arg);
+				/* sc is freed by caller */
+			}
+
+			request_complete++;
+
+		} else {
+			/* no response yet */
+			request_complete = 0;
+			spin_unlock_bh
+			    (&ordered_sc_list->lock);
+		}
+
+		/* If we hit the Max Ordered requests to process every loop,
+		 * we quit
+		 * and let this function be invoked the next time the poll
+		 * thread runs
+		 * to process the remaining requests. This function can take up
+		 * the entire CPU if there is no upper limit to the requests
+		 * processed.
+		 */
+		if (request_complete >= resp_to_process)
+			break;
+	} while (request_complete);
+
+	return 0;
+}
+
+static void oct_poll_req_completion(struct work_struct *work)
+{
+	struct cavium_wk *wk = (struct cavium_wk *)work;
+	struct octeon_device *oct = (struct octeon_device *)wk->ctxptr;
+	struct cavium_wq *cwq = &oct->dma_comp_wq;
+
+	lio_process_ordered_list(oct, 0);
+
+	if (atomic_read(&oct->response_list
+			[OCTEON_ORDERED_SC_LIST].pending_req_count))
+		queue_delayed_work(cwq->wq, &cwq->wk.work, msecs_to_jiffies(1));
+}