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2026-08-17ksmbd: add SMB Direct RDMA encryption transformNamjae Jeon2-0/+23
Port SMB Direct RDMA payload encryption support to the current ksmbd tree. The current tree already supports all-state lookup for encrypted expired sessions, so the overlapping lookup hunk from the original patch is intentionally omitted. Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
2026-08-17ksmbd: add per-share SMB3 encryption enforcementNamjae Jeon1-1/+2
Add a share flag for requiring SMB3 encryption on an individual share. Advertise SMB2_SHAREFLAG_ENCRYPT_DATA in TREE_CONNECT responses and reject both unencrypted TREE_CONNECT attempts and plaintext requests for shares carrying the flag. Keep BIT(19) reserved for the existing ksmbd-tools WIDE_LINKS flag and use BIT(20) for the new netlink ABI flag. Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
2026-08-17ksmbd: recognize replayed SMB2 lock sequencesNamjae Jeon1-2/+2
A server returns success without processing a lock request when a valid LockSequenceArray entry contains the same sequence number. The current verifier only invalidates mismatched entries, so matching requests are submitted to the VFS again and recorded as duplicate locks. Make the verifier report matching sequences and skip lock processing for those replays. Also correct the field comment to describe the sequence and index bit layout used by the implementation and the protocol. Use the capabilities advertised by the server when deciding whether lock sequence verification applies to a multichannel connection. Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
2026-08-17ksmbd: support file level trimNamjae Jeon1-0/+15
Advertise trim support through FS_SECTOR_SIZE_INFORMATION and handle FSCTL_FILE_LEVEL_TRIM requests. Process each trim range by punching a hole while keeping the file size unchanged, and report the number of ranges completed in the ioctl response. The trim operation uses the same byte-range lock handling as zero data for the affected part of the file. Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
2026-08-17ksmbd: add AAPL READDIR_ATTR V2 supportGael Blivet1-0/+8
Extends the existing V1 inline-FinderInfo mechanism (SMB2_CRTCTX_AAPL_SUPPORTS_READ_DIR_ATTR) with the V2 variant: byte-identical layout otherwise, except the ShortNameLength+Reserved bytes (ignored outright by V1 clients) become a single flags field that V2 clients actually interpret. Negotiation: when a client's own client_caps requests V2 (SMB2_CRTCTX_AAPL_SUPPORTS_READ_DIR_ATTR_V2), advertise V2 instead of V1 in the server's own server_caps reply -- they're mutually exclusive on the wire, not both set together. Wire format: the only currently-defined V2 flag, AAPL_READDIR_ATTR_V2_NO_XATTR, signals that an item has no xattrs/streams so the client can skip a separate query. Compute this per-entry in ksmbd_vfs_fill_dentry_attrs() by checking for any xattr under the XATTR_NAME_STREAM ("user.DosStream.") prefix -- a reliable, distinct marker for genuine ADS/stream xattrs, unlike DOSATTRIB or ACL xattrs which live under different prefixes, so this can't false-positive into telling Finder a file has no extra data when it actually does. Only computed when a V2 connection is active, to avoid the extra listxattr() call otherwise. V1's fixed ShortNameLength=24 convention (real macOS clients ignore the value outright per the same client source, so it's cosmetic parity with other real servers, not a functional requirement) is kept V1-only rather than reused as a V2 base value -- V2 clients do interpret this field, so it needs a clean 0-or-flag value, not a leftover V1 constant that happens not to collide with the one defined flag bit today. Confirmed via live diagnostics that macOS actually negotiates and uses V2 (client_caps bit 0x10 set) rather than falling back to V1 or ignoring the capability. Assisted-by: Claude:claude-sonnet-5 Signed-off-by: Gael Blivet <gael.blivet@gmail.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
2026-08-17ksmbd: add AAPL kAAPL_SERVER_QUERY create context supportGael Blivet1-0/+1
macOS clients (Finder, and specifically Time Machine's backupd) send an "AAPL" SMB2 create context on CREATE to negotiate AAPL-specific server capabilities (server_caps/vol_caps/model string). Without a response to this context, macOS Time Machine over SMB does not work at all. Add the AAPL create context structs (create_aapl_rsp, aapl_server_query_req) and create_aapl_rsp_buf(), which builds the kAAPL_SERVER_QUERY response mirroring the layout observed from macOS's own smbd, including the model string workaround: omitting the model string when the client requested it causes smbfs.kext to enter a broken disconnect path requiring a full macOS reboot to recover from. Command codes and bitmap values reuse the existing SMB2_CRTCTX_AAPL_* constants in fs/smb/common/smb2pdu.h. Wire format confirmed against AAPL's published public client kernel source (public client behavior reference) -- every field here and every SMB2_CRTCTX_AAPL_* constant matches exactly. Hook the request parsing and response into smb2_open()'s existing create-context handling, following the same DataOffset+DataLength bounds-checking convention already used by every other context parser in this file. The AAPL model string is configurable via the existing netlink startup path (server_conf.aapl_model, default "Xserve"). This is scoped to shares with the new KSMBD_SHARE_FLAG_TIME_MACHINE flag only, not enabled globally -- AAPL's AAPL extension is undocumented, so containing its blast radius to shares that explicitly opt in limits risk to ordinary SMB shares. conn->aapl_readdir_attr is set here when the client also advertises READDIR_ATTR support, but the actual inline-FinderInfo wire format (the feature that flag gates) is not implemented yet -- follow-up commit. Assisted-by: Claude:claude-sonnet-5 Signed-off-by: Gael Blivet <gael.blivet@gmail.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
2026-08-17ksmbd: return complete resume key responseNamjae Jeon1-1/+1
The FSCTL_SRV_REQUEST_RESUME_KEY response contains a mandatory four-byte context field after ContextLength. Defining the context as a flexible array excludes it from sizeof(struct resume_key_ioctl_rsp), so ksmbd sends only 28 bytes instead of the required 32 bytes. The truncated response cannot be decoded and results in an NDR buffer size error. Define the reserved context as a fixed four-byte field. This makes the response size match the wire format and ensures the field is zeroed and included in OutputCount. Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
2026-08-17ksmbd: support empty snapshot enumerationNamjae Jeon1-0/+1
FSCTL_SRV_ENUM_SNAPS is currently unimplemented, causing clients to treat shadow-copy enumeration as unsupported even when the share simply has no snapshots. Handle the count-only SRV_SNAPSHOT_ARRAY request and return a valid empty snapshot list after validating the file handle and minimum output buffer size. Report a two-byte empty UTF-16 MULTI_SZ array and zero snapshot counts. This allows smb2.ioctl.shadow_copy to run without a snapshot backend. Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
2026-08-03smb: compress: reject Pattern_V1 when not negotiatedAnatolii Shumak2-4/+10
Pattern_V1 is an optional chained payload type selected during SMB 3.1.1 compression negotiate. conn->compress_pattern was only consulted when building responses, so a peer that negotiated LZ77 with chained support could still submit Pattern payloads on the receive path. Pass allow_pattern through smb_compression_decompress() and reject SMB3_COMPRESS_PATTERN in the chained decoder when it is false. Link: https://github.com/namjaejeon/ksmbd/issues/529 Fixes: a08de24c2b85 ("ksmbd: negotiate and decode SMB2 compression") Signed-off-by: Anatolii Shumak <anatoliy.shumak@gmail.com> Reviewed-by: ChenXiaoSong <chenxiaosong@kylinos.cn> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-07-13smb/client: refresh allocation after EOF-extending fallocateHuiwen He1-0/+5
Before this change, xfstests generic/496 was not supported on ksmbd: generic/496 ... [not run] fallocated swap not supported here ksmbd handles SetEOF as truncate, so EOF extension alone does not allocate backing blocks. A fallocated swapfile can therefore still look sparse to swapon. Request allocation for EOF-extending fallocate ranges that can be represented by FILE_ALLOCATION_INFORMATION, and refresh the allocation state afterwards. With this change, xfstests generic/496 and generic/701 pass on ksmbd. However, Samba "strict allocate = no" now exposes the real generic/701 failure: the old pass came from inflated local i_blocks, not from server allocation. generic/213 also fails in that case because an oversized allocation request may not return ENOSPC. Signed-off-by: Huiwen He <hehuiwen@kylinos.cn> Reviewed-by: ChenXiaoSong <chenxiaosong@kylinos.cn> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-06-24smb common: add missing AAPL definesSteve French1-0/+24
Add various defines for AAPL open context, e.g. for queries of server capabilities. Signed-off-by: Steve French <stfrench@microsoft.com>
2026-06-16smb: add common SMB2 compression transform helpersNamjae Jeon4-8/+410
Implement common validation, compression and decompression for SMB2 compression transforms. Support unchained LZ77 and chained NONE, LZ77 and Pattern_V1 payloads. Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-06-16smb: move LZ77 compression into common codeNamjae Jeon4-0/+532
Move the LZ77 codec in cifs.ko to smb/common/ so both the SMB client and ksmbd can use it. Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-06-16smb/server: implement FSCTL_SET_COMPRESSION ioctl handlerChenXiaoSong1-1/+1
Example: 1. client: smbinfo setcompression no /mnt/file 2. client: smbinfo getcompression /mnt/file Compression: 0 (NONE) 3. client: smbinfo setcompression lznt1 /mnt/file 4. client: smbinfo getcompression /mnt/file Compression: 2 (LZNT1) 5. client: smbinfo setcompression default /mnt/file 6. client: smbinfo getcompression /mnt/file Compression: 2 (LZNT1) Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-06-16smb/server: implement FSCTL_GET_COMPRESSION ioctl handlerChenXiaoSong1-1/+1
Example: 1. server: chattr +c /export/file 2. client: smbinfo getcompression /mnt/file Compression: 2 (LZNT1) Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-06-16smb: move compression definitions into common/fscc.hChenXiaoSong1-0/+18
These definitions will also be used by ksmbd, move them into common header file. Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-06-16smb: remove duplicate server/smbfsctl.hChenXiaoSong1-0/+6
Rename the following places: - FSCTL_COPYCHUNK -> FSCTL_SRV_COPYCHUNK - FSCTL_COPYCHUNK_WRITE -> FSCTL_SRV_COPYCHUNK_WRITE - FSCTL_REQUEST_RESUME_KEY -> FSCTL_SRV_REQUEST_RESUME_KEY server/smbfsctl.h contains the following additional definitions compared to common/smbfsctl.h: - IO_REPARSE_TAG_LX_SYMLINK_LE - IO_REPARSE_TAG_AF_UNIX_LE - IO_REPARSE_TAG_LX_FIFO_LE - IO_REPARSE_TAG_LX_CHR_LE - IO_REPARSE_TAG_LX_BLK_LE Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-05-12SMB3.1.1: add missing QUERY_DIR info levelsSteve French2-2/+6
New Infolevels for QUERY_DIR (and QUERY_INFO) levels 78 through 81 are now being used by Windows clients and were added to the documentation. Add defines for them (and correct some typos in documentation). See MS-SMB2 2.2.33 and MS-FSCC 2.4 Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-23Merge tag 'v7.1-rc-part2-ksmbd-fixes' of git://git.samba.org/ksmbdLinus Torvalds18-7508/+0
Pull more smb server updates from Steve French: - move fs/smb/common/smbdirect to fs/smb/smbdirect - change signature calc to use AES-CMAC library, simpler and faster - invalid signature fix - multichannel fix - open create options fix - fix durable handle leak - cap maximum lock count to avoid potential denial of service - four connection fixes: connection free and session destroy IDA fixes, refcount fix, connection leak fix, max_connections off by one fix - IPC validation fix - fix out of bounds write in getting xattrs - fix use after free in durable handle reconnect - three ACL fixes: fix potential ACL overflow, harden num_aces check, and fix minimum ACE size check * tag 'v7.1-rc-part2-ksmbd-fixes' of git://git.samba.org/ksmbd: smb: smbdirect: move fs/smb/common/smbdirect/ to fs/smb/smbdirect/ smb: server: stop sending fake security descriptors ksmbd: scope conn->binding slowpath to bound sessions only ksmbd: fix CreateOptions sanitization clobbering the whole field ksmbd: fix durable fd leak on ClientGUID mismatch in durable v2 open ksmbd: fix O(N^2) DoS in smb2_lock via unbounded LockCount ksmbd: destroy async_ida in ksmbd_conn_free() ksmbd: destroy tree_conn_ida in ksmbd_session_destroy() ksmbd: Use AES-CMAC library for SMB3 signature calculation ksmbd: reset rcount per connection in ksmbd_conn_wait_idle_sess_id() ksmbd: fix out-of-bounds write in smb2_get_ea() EA alignment ksmbd: use check_add_overflow() to prevent u16 DACL size overflow ksmbd: fix use-after-free in smb2_open during durable reconnect ksmbd: validate num_aces and harden ACE walk in smb_inherit_dacl() smb: server: fix max_connections off-by-one in tcp accept path ksmbd: require minimum ACE size in smb_check_perm_dacl() ksmbd: validate response sizes in ipc_validate_msg() smb: server: fix active_num_conn leak on transport allocation failure
2026-04-22smb: smbdirect: move fs/smb/common/smbdirect/ to fs/smb/smbdirect/Stefan Metzmacher18-7508/+0
This also removes the smbdirect_ prefix from the files. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/linux-cifs/CAHk-=whmue3PVi88K0UZLZO0at22QhQZ-yu+qO2TOKyZpGqecw@mail.gmail.com/ Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-22smb: common: add SMB3_COMPRESS_MAX_ALGSEnzo Matsumiya1-0/+2
Set it to number of currently defined algorithms (6 as of now). Signed-off-by: Enzo Matsumiya <ematsumiya@suse.de> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: let smbdirect_connection_deregister_mr_io unlock while waitingStefan Metzmacher1-0/+8
We should not hold a mutex locked during wait_for_completion() holding a reference is enough. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: David Howells <dhowells@redhat.com> Cc: Henrique Carvalho <henrique.carvalho@suse.com> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: fix the logic in smbdirect_socket_destroy_sync() without an ↵Stefan Metzmacher1-7/+21
error If smbdirect_socket_destroy_sync() and sc->first_error was not set we should set -ESHUTDOWN, that's a better condition doing it only implicitly with the sc->status < SMBDIRECT_SOCKET_DISCONNECTING check. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: David Howells <dhowells@redhat.com> Cc: Henrique Carvalho <henrique.carvalho@suse.com> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: fix copyright header of smbdirect.hStefan Metzmacher1-2/+1
Everything in smbdirect.h was taken from my out of tree prototype. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: David Howells <dhowells@redhat.com> Cc: Henrique Carvalho <henrique.carvalho@suse.com> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: change ↵Stefan Metzmacher2-2/+7
smbdirect_socket_parameters.{initiator_depth,responder_resources} to __u16 We still limit this to U8_MAX as the rdma api only uses __u8 and that's also the limit for Infiniband and RoCE*, while iWarp would be able to support larger values at the protocol level. As struct smbdirect_socket_parameters will be part of the uapi for IPPROTO_SMBDIRECT in future, change it now even if userspace sockets won't be supported yet. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: David Howells <dhowells@redhat.com> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Acked-by: Henrique Carvalho <henrique.carvalho@suse.com> Signed-off-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: remove unused SMBDIRECT_USE_INLINE_C_FILES logicStefan Metzmacher12-233/+3
We always build as standalone module (or as part of the core kernel). This also removes unused elements from struct smbdirect_socket and unused exports. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: introduce global workqueuesStefan Metzmacher3-3/+88
These will be used in future and callers should no longer use smbdirect_socket_set_custom_workqueue(). Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: prepare use of dedicated workqueues for different stepsStefan Metzmacher5-21/+33
This is a preparation in order to have global workqueues in the smbdirect module instead of having the caller to provide one. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: remove unused smbdirect_connection_mr_io_recovery_work()Stefan Metzmacher1-85/+10
This would actually never be used as we only move to SMBDIRECT_MR_ERROR when we directly call smbdirect_socket_schedule_cleanup(). Doing an ib_dereg_mr/ib_alloc_mr dance on working connection is not needed and it's also pointless on a broken connection as we don't reuse any ib_pd. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: wrap rdma_disconnect() in rdma_[un]lock_handler()Stefan Metzmacher1-0/+13
This might not be needed, but it controls the order of ib_drain_qp() and rdma_disconnect(). Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: introduce smbdirect_netdev_rdma_capable_mode_type()Stefan Metzmacher5-2/+311
This is basically a copy of ksmbd_rdma_capable_netdev() in the server, but this also prints a message when a device is renamed. The differences are: - It uses rdma_for_each_port() instead of implementing the same logic again. - It returns RDMA_NODE_{UNSPECIFIED,IB_CA,RNIC} values instead of bool Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: introduce the basic smbdirect.koStefan Metzmacher5-0/+76
This exports the functions needed by cifs.ko and ksmbd.ko. It doesn't yet provide a generic socket layer, but it is a good start to introduce that on top. It will be much easier after Davids refactoring using MSG_SPLICE_PAGES, will make it easier to use the socket layer without an additional copy. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: David Howells <dhowells@redhat.com> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: introduce smbdirect_socket_{listen,accept}()Stefan Metzmacher7-8/+554
These will be used by the server soon instead of using smbdirect_accept_connect_request() together with rdma_listen(). Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: introduce smbdirect_socket_bind()Stefan Metzmacher2-0/+19
This will be used by the server in the next steps. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: split out smbdirect_accept_negotiate_finish()Stefan Metzmacher2-7/+21
This will make it easier to support the listen/accept socket interfaces in the next steps. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: introduce smbdirect_init_send_batch_storage()Stefan Metzmacher2-3/+47
This makes it possible to use batching via public functions without exposing the internals of struct smbdirect_send_batch. Once the client no longer needs to use smbdirect_connection_send_single_iter() we can remove this again. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: provide explicit prototypes for cross .c file functionsStefan Metzmacher4-78/+165
These prototypes are used between private .c files, when they will be compiled alone into smbdirect.ko. For now this uses the SMBDIRECT_USE_INLINE_C_FILES code path and marks all function as '__maybe_unused static', but this will make further changes easier. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: introduce smbdirect_public.h with prototypesStefan Metzmacher10-97/+262
smbdirect_public.h contains functions which will be still be eported when we move to an smbdirect.ko. For now this uses the SMBDIRECT_USE_INLINE_C_FILES code path and marks all function as '__maybe_unused static', but this will make further changes easier. Note this generates the following things from checkpatch.pl, so I passed --ignore=FILE_PATH_CHANGES,EXPORT_SYMBOL,COMPLEX_MACRO ERROR: Macros with complex values should be enclosed in parentheses #514: FILE: fs/smb/common/smbdirect/smbdirect_public.h:18: +#define __SMBDIRECT_PUBLIC__ __maybe_unused static WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable #515: FILE: fs/smb/common/smbdirect/smbdirect_public.h:19: +#define __SMBDIRECT_EXPORT_SYMBOL__(__sym) WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable #518: FILE: fs/smb/common/smbdirect/smbdirect_public.h:22: +#define __SMBDIRECT_EXPORT_SYMBOL__(__sym) EXPORT_SYMBOL_FOR_MODULES(__sym, "cifs,ksmbd") This is exactly what we want here, so we should ignore the checkpatch.pl problems. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: let smbdirect_internal.h define pr_fmt without ↵Stefan Metzmacher1-0/+4
SMBDIRECT_USE_INLINE_C_FILES When we move to smbdirect.ko we want log message prefixed with the module name. Note callers are still using smbdirect_socket_set_logging() in order to redirect the per connection logging to their own log functions. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: let smbdirect_socket.h include all headers for used structuresStefan Metzmacher1-0/+7
Currently they are implicitly included via client and server code, but this is needed when we move to an smbdirect.ko. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: introduce smbdirect_socket_create_{kern,accepting}() and ↵Stefan Metzmacher2-1/+127
smbdirect_socket_release() This provides functions which also allocate and free struct smbdirect_socket. This allows callers to use the same flow as with sock_create_kern()/sock_release(). The end goal would be to use sock_create_kern()/sock_release(), but the first step will be to use smbdirect specific functions without any struct socket nor struct sock. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: introduce smbdirect_accept_connect_request()Stefan Metzmacher2-0/+738
This will be used by the server to handle new connections. All rdma processing from rdma_accept() to RDMA_CM_EVENT_ESTABLISHED as well as the waiting for the smbdirect negotiation request and sending the negotiation response is done async until we reach SMBDIRECT_SOCKET_CONNECTED. Sync behaviour will be done by the server calling smbdirect_conection_wait_for_connected() in order to each SMBDIRECT_SOCKET_CONNECTED or an error. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: introduce smbdirect_connect[_sync]()Stefan Metzmacher2-0/+927
This implements a fully async connect logic over all rdma related operations: rdma_resolve_addr, rdma_resolve_route and rdma_connect_locked until we reach RDMA_CM_EVENT_ESTABLISHED, followed by the smbdirect negotiation request/response handling until we reach SMBDIRECT_SOCKET_CONNECTED. smbdirect_connect_sync() is just a useful wrapper around the async logic calling smbdirect_connect() followed by smbdirect_connection_wait_for_connected(), which only waits for SMBDIRECT_SOCKET_CONNECTED or an error. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: let smbdirect_socket_set_initial_parameters() call ↵Stefan Metzmacher2-0/+18
rdma_restrict_node_type() We allow the caller of smbdirect_socket_set_initial_parameters() to pass SMBDIRECT_FLAG_PORT_RANGE_ONLY_{IB,IW} in order to restrict the rdma devices for the listener or connection to either iWarp (RDMA_NODE_RNIC) or InfiniBand/RoCEv1/RoCEv2 (RDMA_NODE_IB_CA). Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: introduce smbdirect_socket_init_{new,accepting}() and helpersStefan Metzmacher1-2/+156
These will be used in order to initialize struct smbdirect_socket with rdma.cm_id being valid from the start in order to hold a reference to the correct net namespace, this will allow us to implement async connecting and accepting logic in the next steps. This comes with some related helper functions in order to initialize the socket without the need to access internals of struct smbdirect_socket: smbdirect_socket_set_initial_parameters smbdirect_socket_get_current_parameters smbdirect_socket_set_kernel_settings smbdirect_socket_set_custom_workqueue Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: introduce smbdirect_socket_shutdown()Stefan Metzmacher1-0/+6
This can be used by client and server to trigger a disconnect of the connection, the idea of to be similar to kernel_sock_shutdown(), but for smbdirect there's no point in shutting down only one direction so there's no 'how' argument. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: introduce smbdirect_connection_is_connected()Stefan Metzmacher1-0/+8
This is a simple way to check is the connection is still ok without the need to know internals of struct smbdirect_socket. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: introduce smbdirect_connection_wait_for_connected()Stefan Metzmacher1-0/+73
This will be used by client and server in order to wait for the connect/negotiation to finish in order to get a usable connection. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: introduce smbdirect_connection_legacy_debug_proc_show()Stefan Metzmacher2-0/+89
This will be used by the client in order to keep the debug output in the current way without the need to access struct smbdirect_socket internals. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-15smb: smbdirect: introduce smbdirect_mr_io_fill_buffer_descriptor()Stefan Metzmacher1-0/+18
This will be used by the client instead of dereferencing struct smbdirect_mr_io internals. Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: Long Li <longli@microsoft.com> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
generated by cgit (git 2.54.0.dirty) at 2026-09-13 23:44:19 +0000