From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- drivers/virt/nitro_enclaves/ne_pci_dev.h | 331 +++++++++++++++++++++++++++++++ 1 file changed, 331 insertions(+) create mode 100644 drivers/virt/nitro_enclaves/ne_pci_dev.h (limited to 'drivers/virt/nitro_enclaves/ne_pci_dev.h') diff --git a/drivers/virt/nitro_enclaves/ne_pci_dev.h b/drivers/virt/nitro_enclaves/ne_pci_dev.h new file mode 100644 index 000000000..6e9f28971 --- /dev/null +++ b/drivers/virt/nitro_enclaves/ne_pci_dev.h @@ -0,0 +1,331 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2020-2021 Amazon.com, Inc. or its affiliates. All Rights Reserved. + */ + +#ifndef _NE_PCI_DEV_H_ +#define _NE_PCI_DEV_H_ + +#include +#include +#include +#include +#include +#include + +/** + * DOC: Nitro Enclaves (NE) PCI device + */ + +/** + * PCI_DEVICE_ID_NE - Nitro Enclaves PCI device id. + */ +#define PCI_DEVICE_ID_NE (0xe4c1) +/** + * PCI_BAR_NE - Nitro Enclaves PCI device MMIO BAR. + */ +#define PCI_BAR_NE (0x03) + +/** + * DOC: Device registers in the NE PCI device MMIO BAR + */ + +/** + * NE_ENABLE - (1 byte) Register to notify the device that the driver is using + * it (Read/Write). + */ +#define NE_ENABLE (0x0000) +#define NE_ENABLE_OFF (0x00) +#define NE_ENABLE_ON (0x01) + +/** + * NE_VERSION - (2 bytes) Register to select the device run-time version + * (Read/Write). + */ +#define NE_VERSION (0x0002) +#define NE_VERSION_MAX (0x0001) + +/** + * NE_COMMAND - (4 bytes) Register to notify the device what command was + * requested (Write-Only). + */ +#define NE_COMMAND (0x0004) + +/** + * NE_EVTCNT - (4 bytes) Register to notify the driver that a reply or a device + * event is available (Read-Only): + * - Lower half - command reply counter + * - Higher half - out-of-band device event counter + */ +#define NE_EVTCNT (0x000c) +#define NE_EVTCNT_REPLY_SHIFT (0) +#define NE_EVTCNT_REPLY_MASK (0x0000ffff) +#define NE_EVTCNT_REPLY(cnt) (((cnt) & NE_EVTCNT_REPLY_MASK) >> \ + NE_EVTCNT_REPLY_SHIFT) +#define NE_EVTCNT_EVENT_SHIFT (16) +#define NE_EVTCNT_EVENT_MASK (0xffff0000) +#define NE_EVTCNT_EVENT(cnt) (((cnt) & NE_EVTCNT_EVENT_MASK) >> \ + NE_EVTCNT_EVENT_SHIFT) + +/** + * NE_SEND_DATA - (240 bytes) Buffer for sending the command request payload + * (Read/Write). + */ +#define NE_SEND_DATA (0x0010) + +/** + * NE_RECV_DATA - (240 bytes) Buffer for receiving the command reply payload + * (Read-Only). + */ +#define NE_RECV_DATA (0x0100) + +/** + * DOC: Device MMIO buffer sizes + */ + +/** + * NE_SEND_DATA_SIZE - Size of the send buffer, in bytes. + */ +#define NE_SEND_DATA_SIZE (240) + +/** + * NE_RECV_DATA_SIZE - Size of the receive buffer, in bytes. + */ +#define NE_RECV_DATA_SIZE (240) + +/** + * DOC: MSI-X interrupt vectors + */ + +/** + * NE_VEC_REPLY - MSI-X vector used for command reply notification. + */ +#define NE_VEC_REPLY (0) + +/** + * NE_VEC_EVENT - MSI-X vector used for out-of-band events e.g. enclave crash. + */ +#define NE_VEC_EVENT (1) + +/** + * enum ne_pci_dev_cmd_type - Device command types. + * @INVALID_CMD: Invalid command. + * @ENCLAVE_START: Start an enclave, after setting its resources. + * @ENCLAVE_GET_SLOT: Get the slot uid of an enclave. + * @ENCLAVE_STOP: Terminate an enclave. + * @SLOT_ALLOC : Allocate a slot for an enclave. + * @SLOT_FREE: Free the slot allocated for an enclave + * @SLOT_ADD_MEM: Add a memory region to an enclave slot. + * @SLOT_ADD_VCPU: Add a vCPU to an enclave slot. + * @SLOT_COUNT : Get the number of allocated slots. + * @NEXT_SLOT: Get the next slot in the list of allocated slots. + * @SLOT_INFO: Get the info for a slot e.g. slot uid, vCPUs count. + * @SLOT_ADD_BULK_VCPUS: Add a number of vCPUs, not providing CPU ids. + * @MAX_CMD: A gatekeeper for max possible command type. + */ +enum ne_pci_dev_cmd_type { + INVALID_CMD = 0, + ENCLAVE_START = 1, + ENCLAVE_GET_SLOT = 2, + ENCLAVE_STOP = 3, + SLOT_ALLOC = 4, + SLOT_FREE = 5, + SLOT_ADD_MEM = 6, + SLOT_ADD_VCPU = 7, + SLOT_COUNT = 8, + NEXT_SLOT = 9, + SLOT_INFO = 10, + SLOT_ADD_BULK_VCPUS = 11, + MAX_CMD, +}; + +/** + * DOC: Device commands - payload structure for requests and replies. + */ + +/** + * struct enclave_start_req - ENCLAVE_START request. + * @slot_uid: Slot unique id mapped to the enclave to start. + * @enclave_cid: Context ID (CID) for the enclave vsock device. + * If 0, CID is autogenerated. + * @flags: Flags for the enclave to start with (e.g. debug mode). + */ +struct enclave_start_req { + u64 slot_uid; + u64 enclave_cid; + u64 flags; +}; + +/** + * struct enclave_get_slot_req - ENCLAVE_GET_SLOT request. + * @enclave_cid: Context ID (CID) for the enclave vsock device. + */ +struct enclave_get_slot_req { + u64 enclave_cid; +}; + +/** + * struct enclave_stop_req - ENCLAVE_STOP request. + * @slot_uid: Slot unique id mapped to the enclave to stop. + */ +struct enclave_stop_req { + u64 slot_uid; +}; + +/** + * struct slot_alloc_req - SLOT_ALLOC request. + * @unused: In order to avoid weird sizeof edge cases. + */ +struct slot_alloc_req { + u8 unused; +}; + +/** + * struct slot_free_req - SLOT_FREE request. + * @slot_uid: Slot unique id mapped to the slot to free. + */ +struct slot_free_req { + u64 slot_uid; +}; + +/* TODO: Add flags field to the request to add memory region. */ +/** + * struct slot_add_mem_req - SLOT_ADD_MEM request. + * @slot_uid: Slot unique id mapped to the slot to add the memory region to. + * @paddr: Physical address of the memory region to add to the slot. + * @size: Memory size, in bytes, of the memory region to add to the slot. + */ +struct slot_add_mem_req { + u64 slot_uid; + u64 paddr; + u64 size; +}; + +/** + * struct slot_add_vcpu_req - SLOT_ADD_VCPU request. + * @slot_uid: Slot unique id mapped to the slot to add the vCPU to. + * @vcpu_id: vCPU ID of the CPU to add to the enclave. + * @padding: Padding for the overall data structure. + */ +struct slot_add_vcpu_req { + u64 slot_uid; + u32 vcpu_id; + u8 padding[4]; +}; + +/** + * struct slot_count_req - SLOT_COUNT request. + * @unused: In order to avoid weird sizeof edge cases. + */ +struct slot_count_req { + u8 unused; +}; + +/** + * struct next_slot_req - NEXT_SLOT request. + * @slot_uid: Slot unique id of the next slot in the iteration. + */ +struct next_slot_req { + u64 slot_uid; +}; + +/** + * struct slot_info_req - SLOT_INFO request. + * @slot_uid: Slot unique id mapped to the slot to get information about. + */ +struct slot_info_req { + u64 slot_uid; +}; + +/** + * struct slot_add_bulk_vcpus_req - SLOT_ADD_BULK_VCPUS request. + * @slot_uid: Slot unique id mapped to the slot to add vCPUs to. + * @nr_vcpus: Number of vCPUs to add to the slot. + */ +struct slot_add_bulk_vcpus_req { + u64 slot_uid; + u64 nr_vcpus; +}; + +/** + * struct ne_pci_dev_cmd_reply - NE PCI device command reply. + * @rc : Return code of the logic that processed the request. + * @padding0: Padding for the overall data structure. + * @slot_uid: Valid for all commands except SLOT_COUNT. + * @enclave_cid: Valid for ENCLAVE_START command. + * @slot_count : Valid for SLOT_COUNT command. + * @mem_regions: Valid for SLOT_ALLOC and SLOT_INFO commands. + * @mem_size: Valid for SLOT_INFO command. + * @nr_vcpus: Valid for SLOT_INFO command. + * @flags: Valid for SLOT_INFO command. + * @state: Valid for SLOT_INFO command. + * @padding1: Padding for the overall data structure. + */ +struct ne_pci_dev_cmd_reply { + s32 rc; + u8 padding0[4]; + u64 slot_uid; + u64 enclave_cid; + u64 slot_count; + u64 mem_regions; + u64 mem_size; + u64 nr_vcpus; + u64 flags; + u16 state; + u8 padding1[6]; +}; + +/** + * struct ne_pci_dev - Nitro Enclaves (NE) PCI device. + * @cmd_reply_avail: Variable set if a reply has been sent by the + * PCI device. + * @cmd_reply_wait_q: Wait queue for handling command reply from the + * PCI device. + * @enclaves_list: List of the enclaves managed by the PCI device. + * @enclaves_list_mutex: Mutex for accessing the list of enclaves. + * @event_wq: Work queue for handling out-of-band events + * triggered by the Nitro Hypervisor which require + * enclave state scanning and propagation to the + * enclave process. + * @iomem_base : MMIO region of the PCI device. + * @notify_work: Work item for every received out-of-band event. + * @pci_dev_mutex: Mutex for accessing the PCI device MMIO space. + * @pdev: PCI device data structure. + */ +struct ne_pci_dev { + atomic_t cmd_reply_avail; + wait_queue_head_t cmd_reply_wait_q; + struct list_head enclaves_list; + struct mutex enclaves_list_mutex; + struct workqueue_struct *event_wq; + void __iomem *iomem_base; + struct work_struct notify_work; + struct mutex pci_dev_mutex; + struct pci_dev *pdev; +}; + +/** + * ne_do_request() - Submit command request to the PCI device based on the command + * type and retrieve the associated reply. + * @pdev: PCI device to send the command to and receive the reply from. + * @cmd_type: Command type of the request sent to the PCI device. + * @cmd_request: Command request payload. + * @cmd_request_size: Size of the command request payload. + * @cmd_reply: Command reply payload. + * @cmd_reply_size: Size of the command reply payload. + * + * Context: Process context. This function uses the ne_pci_dev mutex to handle + * one command at a time. + * Return: + * * 0 on success. + * * Negative return value on failure. + */ +int ne_do_request(struct pci_dev *pdev, enum ne_pci_dev_cmd_type cmd_type, + void *cmd_request, size_t cmd_request_size, + struct ne_pci_dev_cmd_reply *cmd_reply, + size_t cmd_reply_size); + +/* Nitro Enclaves (NE) PCI device driver */ +extern struct pci_driver ne_pci_driver; + +#endif /* _NE_PCI_DEV_H_ */ -- cgit v1.2.3