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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /fs/ksmbd/ksmbd_netlink.h
downloadlinux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz
linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip
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(). ...
Diffstat (limited to '')
-rw-r--r--fs/ksmbd/ksmbd_netlink.h413
1 files changed, 413 insertions, 0 deletions
diff --git a/fs/ksmbd/ksmbd_netlink.h b/fs/ksmbd/ksmbd_netlink.h
new file mode 100644
index 000000000..fb8b2d566
--- /dev/null
+++ b/fs/ksmbd/ksmbd_netlink.h
@@ -0,0 +1,413 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2018 Samsung Electronics Co., Ltd.
+ *
+ * linux-ksmbd-devel@lists.sourceforge.net
+ */
+
+#ifndef _LINUX_KSMBD_SERVER_H
+#define _LINUX_KSMBD_SERVER_H
+
+#include <linux/types.h>
+
+/*
+ * This is a userspace ABI to communicate data between ksmbd and user IPC
+ * daemon using netlink. This is added to track and cache user account DB
+ * and share configuration info from userspace.
+ *
+ * - KSMBD_EVENT_HEARTBEAT_REQUEST(ksmbd_heartbeat)
+ * This event is to check whether user IPC daemon is alive. If user IPC
+ * daemon is dead, ksmbd keep existing connection till disconnecting and
+ * new connection will be denied.
+ *
+ * - KSMBD_EVENT_STARTING_UP(ksmbd_startup_request)
+ * This event is to receive the information that initializes the ksmbd
+ * server from the user IPC daemon and to start the server. The global
+ * section parameters are given from smb.conf as initialization
+ * information.
+ *
+ * - KSMBD_EVENT_SHUTTING_DOWN(ksmbd_shutdown_request)
+ * This event is to shutdown ksmbd server.
+ *
+ * - KSMBD_EVENT_LOGIN_REQUEST/RESPONSE(ksmbd_login_request/response)
+ * This event is to get user account info to user IPC daemon.
+ *
+ * - KSMBD_EVENT_SHARE_CONFIG_REQUEST/RESPONSE(ksmbd_share_config_request/response)
+ * This event is to get net share configuration info.
+ *
+ * - KSMBD_EVENT_TREE_CONNECT_REQUEST/RESPONSE(ksmbd_tree_connect_request/response)
+ * This event is to get session and tree connect info.
+ *
+ * - KSMBD_EVENT_TREE_DISCONNECT_REQUEST(ksmbd_tree_disconnect_request)
+ * This event is to send tree disconnect info to user IPC daemon.
+ *
+ * - KSMBD_EVENT_LOGOUT_REQUEST(ksmbd_logout_request)
+ * This event is to send logout request to user IPC daemon.
+ *
+ * - KSMBD_EVENT_RPC_REQUEST/RESPONSE(ksmbd_rpc_command)
+ * This event is to make DCE/RPC request like srvsvc, wkssvc, lsarpc,
+ * samr to be processed in userspace.
+ *
+ * - KSMBD_EVENT_SPNEGO_AUTHEN_REQUEST/RESPONSE(ksmbd_spnego_authen_request/response)
+ * This event is to make kerberos authentication to be processed in
+ * userspace.
+ */
+
+#define KSMBD_GENL_NAME "SMBD_GENL"
+#define KSMBD_GENL_VERSION 0x01
+
+#define KSMBD_REQ_MAX_ACCOUNT_NAME_SZ 48
+#define KSMBD_REQ_MAX_HASH_SZ 18
+#define KSMBD_REQ_MAX_SHARE_NAME 64
+
+/*
+ * IPC heartbeat frame to check whether user IPC daemon is alive.
+ */
+struct ksmbd_heartbeat {
+ __u32 handle;
+};
+
+/*
+ * Global config flags.
+ */
+#define KSMBD_GLOBAL_FLAG_INVALID (0)
+#define KSMBD_GLOBAL_FLAG_SMB2_LEASES BIT(0)
+#define KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION BIT(1)
+#define KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL BIT(2)
+#define KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION_OFF BIT(3)
+
+/*
+ * IPC request for ksmbd server startup
+ */
+struct ksmbd_startup_request {
+ __u32 flags; /* Flags for global config */
+ __s32 signing; /* Signing enabled */
+ __s8 min_prot[16]; /* The minimum SMB protocol version */
+ __s8 max_prot[16]; /* The maximum SMB protocol version */
+ __s8 netbios_name[16];
+ __s8 work_group[64]; /* Workgroup */
+ __s8 server_string[64]; /* Server string */
+ __u16 tcp_port; /* tcp port */
+ __u16 ipc_timeout; /*
+ * specifies the number of seconds
+ * server will wait for the userspace to
+ * reply to heartbeat frames.
+ */
+ __u32 deadtime; /* Number of minutes of inactivity */
+ __u32 file_max; /* Limits the maximum number of open files */
+ __u32 smb2_max_write; /* MAX write size */
+ __u32 smb2_max_read; /* MAX read size */
+ __u32 smb2_max_trans; /* MAX trans size */
+ __u32 share_fake_fscaps; /*
+ * Support some special application that
+ * makes QFSINFO calls to check whether
+ * we set the SPARSE_FILES bit (0x40).
+ */
+ __u32 sub_auth[3]; /* Subauth value for Security ID */
+ __u32 smb2_max_credits; /* MAX credits */
+ __u32 smbd_max_io_size; /* smbd read write size */
+ __u32 max_connections; /* Number of maximum simultaneous connections */
+ __u32 reserved[126]; /* Reserved room */
+ __u32 ifc_list_sz; /* interfaces list size */
+ __s8 ____payload[];
+};
+
+#define KSMBD_STARTUP_CONFIG_INTERFACES(s) ((s)->____payload)
+
+/*
+ * IPC request to shutdown ksmbd server.
+ */
+struct ksmbd_shutdown_request {
+ __s32 reserved[16];
+};
+
+/*
+ * IPC user login request.
+ */
+struct ksmbd_login_request {
+ __u32 handle;
+ __s8 account[KSMBD_REQ_MAX_ACCOUNT_NAME_SZ]; /* user account name */
+ __u32 reserved[16]; /* Reserved room */
+};
+
+/*
+ * IPC user login response.
+ */
+struct ksmbd_login_response {
+ __u32 handle;
+ __u32 gid; /* group id */
+ __u32 uid; /* user id */
+ __s8 account[KSMBD_REQ_MAX_ACCOUNT_NAME_SZ]; /* user account name */
+ __u16 status;
+ __u16 hash_sz; /* hash size */
+ __s8 hash[KSMBD_REQ_MAX_HASH_SZ]; /* password hash */
+ __u32 reserved[16]; /* Reserved room */
+};
+
+/*
+ * IPC request to fetch net share config.
+ */
+struct ksmbd_share_config_request {
+ __u32 handle;
+ __s8 share_name[KSMBD_REQ_MAX_SHARE_NAME]; /* share name */
+ __u32 reserved[16]; /* Reserved room */
+};
+
+/*
+ * IPC response to the net share config request.
+ */
+struct ksmbd_share_config_response {
+ __u32 handle;
+ __u32 flags;
+ __u16 create_mask;
+ __u16 directory_mask;
+ __u16 force_create_mode;
+ __u16 force_directory_mode;
+ __u16 force_uid;
+ __u16 force_gid;
+ __s8 share_name[KSMBD_REQ_MAX_SHARE_NAME];
+ __u32 reserved[112]; /* Reserved room */
+ __u32 veto_list_sz;
+ __s8 ____payload[];
+};
+
+#define KSMBD_SHARE_CONFIG_VETO_LIST(s) ((s)->____payload)
+
+static inline char *
+ksmbd_share_config_path(struct ksmbd_share_config_response *sc)
+{
+ char *p = sc->____payload;
+
+ if (sc->veto_list_sz)
+ p += sc->veto_list_sz + 1;
+
+ return p;
+}
+
+/*
+ * IPC request for tree connection. This request include session and tree
+ * connect info from client.
+ */
+struct ksmbd_tree_connect_request {
+ __u32 handle;
+ __u16 account_flags;
+ __u16 flags;
+ __u64 session_id;
+ __u64 connect_id;
+ __s8 account[KSMBD_REQ_MAX_ACCOUNT_NAME_SZ];
+ __s8 share[KSMBD_REQ_MAX_SHARE_NAME];
+ __s8 peer_addr[64];
+ __u32 reserved[16]; /* Reserved room */
+};
+
+/*
+ * IPC Response structure for tree connection.
+ */
+struct ksmbd_tree_connect_response {
+ __u32 handle;
+ __u16 status;
+ __u16 connection_flags;
+ __u32 reserved[16]; /* Reserved room */
+};
+
+/*
+ * IPC Request struture to disconnect tree connection.
+ */
+struct ksmbd_tree_disconnect_request {
+ __u64 session_id; /* session id */
+ __u64 connect_id; /* tree connection id */
+ __u32 reserved[16]; /* Reserved room */
+};
+
+/*
+ * IPC Response structure to logout user account.
+ */
+struct ksmbd_logout_request {
+ __s8 account[KSMBD_REQ_MAX_ACCOUNT_NAME_SZ]; /* user account name */
+ __u32 account_flags;
+ __u32 reserved[16]; /* Reserved room */
+};
+
+/*
+ * RPC command structure to send rpc request like srvsvc or wkssvc to
+ * IPC user daemon.
+ */
+struct ksmbd_rpc_command {
+ __u32 handle;
+ __u32 flags;
+ __u32 payload_sz;
+ __u8 payload[];
+};
+
+/*
+ * IPC Request Kerberos authentication
+ */
+struct ksmbd_spnego_authen_request {
+ __u32 handle;
+ __u16 spnego_blob_len; /* the length of spnego_blob */
+ __u8 spnego_blob[]; /*
+ * the GSS token from SecurityBuffer of
+ * SMB2 SESSION SETUP request
+ */
+};
+
+/*
+ * Response data which includes the GSS token and the session key generated by
+ * user daemon.
+ */
+struct ksmbd_spnego_authen_response {
+ __u32 handle;
+ struct ksmbd_login_response login_response; /*
+ * the login response with
+ * a user identified by the
+ * GSS token from a client
+ */
+ __u16 session_key_len; /* the length of the session key */
+ __u16 spnego_blob_len; /*
+ * the length of the GSS token which will be
+ * stored in SecurityBuffer of SMB2 SESSION
+ * SETUP response
+ */
+ __u8 payload[]; /* session key + AP_REP */
+};
+
+/*
+ * This also used as NETLINK attribute type value.
+ *
+ * NOTE:
+ * Response message type value should be equal to
+ * request message type value + 1.
+ */
+enum ksmbd_event {
+ KSMBD_EVENT_UNSPEC = 0,
+ KSMBD_EVENT_HEARTBEAT_REQUEST,
+
+ KSMBD_EVENT_STARTING_UP,
+ KSMBD_EVENT_SHUTTING_DOWN,
+
+ KSMBD_EVENT_LOGIN_REQUEST,
+ KSMBD_EVENT_LOGIN_RESPONSE = 5,
+
+ KSMBD_EVENT_SHARE_CONFIG_REQUEST,
+ KSMBD_EVENT_SHARE_CONFIG_RESPONSE,
+
+ KSMBD_EVENT_TREE_CONNECT_REQUEST,
+ KSMBD_EVENT_TREE_CONNECT_RESPONSE,
+
+ KSMBD_EVENT_TREE_DISCONNECT_REQUEST = 10,
+
+ KSMBD_EVENT_LOGOUT_REQUEST,
+
+ KSMBD_EVENT_RPC_REQUEST,
+ KSMBD_EVENT_RPC_RESPONSE,
+
+ KSMBD_EVENT_SPNEGO_AUTHEN_REQUEST,
+ KSMBD_EVENT_SPNEGO_AUTHEN_RESPONSE = 15,
+
+ KSMBD_EVENT_MAX
+};
+
+/*
+ * Enumeration for IPC tree connect status.
+ */
+enum KSMBD_TREE_CONN_STATUS {
+ KSMBD_TREE_CONN_STATUS_OK = 0,
+ KSMBD_TREE_CONN_STATUS_NOMEM,
+ KSMBD_TREE_CONN_STATUS_NO_SHARE,
+ KSMBD_TREE_CONN_STATUS_NO_USER,
+ KSMBD_TREE_CONN_STATUS_INVALID_USER,
+ KSMBD_TREE_CONN_STATUS_HOST_DENIED = 5,
+ KSMBD_TREE_CONN_STATUS_CONN_EXIST,
+ KSMBD_TREE_CONN_STATUS_TOO_MANY_CONNS,
+ KSMBD_TREE_CONN_STATUS_TOO_MANY_SESSIONS,
+ KSMBD_TREE_CONN_STATUS_ERROR,
+};
+
+/*
+ * User config flags.
+ */
+#define KSMBD_USER_FLAG_INVALID (0)
+#define KSMBD_USER_FLAG_OK BIT(0)
+#define KSMBD_USER_FLAG_BAD_PASSWORD BIT(1)
+#define KSMBD_USER_FLAG_BAD_UID BIT(2)
+#define KSMBD_USER_FLAG_BAD_USER BIT(3)
+#define KSMBD_USER_FLAG_GUEST_ACCOUNT BIT(4)
+#define KSMBD_USER_FLAG_DELAY_SESSION BIT(5)
+
+/*
+ * Share config flags.
+ */
+#define KSMBD_SHARE_FLAG_INVALID (0)
+#define KSMBD_SHARE_FLAG_AVAILABLE BIT(0)
+#define KSMBD_SHARE_FLAG_BROWSEABLE BIT(1)
+#define KSMBD_SHARE_FLAG_WRITEABLE BIT(2)
+#define KSMBD_SHARE_FLAG_READONLY BIT(3)
+#define KSMBD_SHARE_FLAG_GUEST_OK BIT(4)
+#define KSMBD_SHARE_FLAG_GUEST_ONLY BIT(5)
+#define KSMBD_SHARE_FLAG_STORE_DOS_ATTRS BIT(6)
+#define KSMBD_SHARE_FLAG_OPLOCKS BIT(7)
+#define KSMBD_SHARE_FLAG_PIPE BIT(8)
+#define KSMBD_SHARE_FLAG_HIDE_DOT_FILES BIT(9)
+#define KSMBD_SHARE_FLAG_INHERIT_OWNER BIT(10)
+#define KSMBD_SHARE_FLAG_STREAMS BIT(11)
+#define KSMBD_SHARE_FLAG_FOLLOW_SYMLINKS BIT(12)
+#define KSMBD_SHARE_FLAG_ACL_XATTR BIT(13)
+#define KSMBD_SHARE_FLAG_UPDATE BIT(14)
+
+/*
+ * Tree connect request flags.
+ */
+#define KSMBD_TREE_CONN_FLAG_REQUEST_SMB1 (0)
+#define KSMBD_TREE_CONN_FLAG_REQUEST_IPV6 BIT(0)
+#define KSMBD_TREE_CONN_FLAG_REQUEST_SMB2 BIT(1)
+
+/*
+ * Tree connect flags.
+ */
+#define KSMBD_TREE_CONN_FLAG_GUEST_ACCOUNT BIT(0)
+#define KSMBD_TREE_CONN_FLAG_READ_ONLY BIT(1)
+#define KSMBD_TREE_CONN_FLAG_WRITABLE BIT(2)
+#define KSMBD_TREE_CONN_FLAG_ADMIN_ACCOUNT BIT(3)
+#define KSMBD_TREE_CONN_FLAG_UPDATE BIT(4)
+
+/*
+ * RPC over IPC.
+ */
+#define KSMBD_RPC_METHOD_RETURN BIT(0)
+#define KSMBD_RPC_SRVSVC_METHOD_INVOKE BIT(1)
+#define KSMBD_RPC_SRVSVC_METHOD_RETURN (KSMBD_RPC_SRVSVC_METHOD_INVOKE | KSMBD_RPC_METHOD_RETURN)
+#define KSMBD_RPC_WKSSVC_METHOD_INVOKE BIT(2)
+#define KSMBD_RPC_WKSSVC_METHOD_RETURN (KSMBD_RPC_WKSSVC_METHOD_INVOKE | KSMBD_RPC_METHOD_RETURN)
+#define KSMBD_RPC_IOCTL_METHOD (BIT(3) | KSMBD_RPC_METHOD_RETURN)
+#define KSMBD_RPC_OPEN_METHOD BIT(4)
+#define KSMBD_RPC_WRITE_METHOD BIT(5)
+#define KSMBD_RPC_READ_METHOD (BIT(6) | KSMBD_RPC_METHOD_RETURN)
+#define KSMBD_RPC_CLOSE_METHOD BIT(7)
+#define KSMBD_RPC_RAP_METHOD (BIT(8) | KSMBD_RPC_METHOD_RETURN)
+#define KSMBD_RPC_RESTRICTED_CONTEXT BIT(9)
+#define KSMBD_RPC_SAMR_METHOD_INVOKE BIT(10)
+#define KSMBD_RPC_SAMR_METHOD_RETURN (KSMBD_RPC_SAMR_METHOD_INVOKE | KSMBD_RPC_METHOD_RETURN)
+#define KSMBD_RPC_LSARPC_METHOD_INVOKE BIT(11)
+#define KSMBD_RPC_LSARPC_METHOD_RETURN (KSMBD_RPC_LSARPC_METHOD_INVOKE | KSMBD_RPC_METHOD_RETURN)
+
+/*
+ * RPC status definitions.
+ */
+#define KSMBD_RPC_OK 0
+#define KSMBD_RPC_EBAD_FUNC 0x00000001
+#define KSMBD_RPC_EACCESS_DENIED 0x00000005
+#define KSMBD_RPC_EBAD_FID 0x00000006
+#define KSMBD_RPC_ENOMEM 0x00000008
+#define KSMBD_RPC_EBAD_DATA 0x0000000D
+#define KSMBD_RPC_ENOTIMPLEMENTED 0x00000040
+#define KSMBD_RPC_EINVALID_PARAMETER 0x00000057
+#define KSMBD_RPC_EMORE_DATA 0x000000EA
+#define KSMBD_RPC_EINVALID_LEVEL 0x0000007C
+#define KSMBD_RPC_SOME_NOT_MAPPED 0x00000107
+
+#define KSMBD_CONFIG_OPT_DISABLED 0
+#define KSMBD_CONFIG_OPT_ENABLED 1
+#define KSMBD_CONFIG_OPT_AUTO 2
+#define KSMBD_CONFIG_OPT_MANDATORY 3
+
+#endif /* _LINUX_KSMBD_SERVER_H */