smb2_write_rdma(9)

💖 smb2_write_rdma(9) — Kernel API Manual 💖

Okay bestie, gather round 🫶 This is the Kernel API Manual page for smb2_write_rdma, and it is literally about receiving and storing an RDMA WRITE payload. No cap.

🌸 NAME 🌸

smb2_write_rdma — receive and store an RDMA WRITE payload. That is the whole name-brand vibe ✨

✨ SYNOPSIS ✨

ssize_t smb2_write_rdma (struct ksmbd_work *work , struct smbdirect_buffer_descriptor_v1 *desc , unsigned int desc_len , struct smb2_rdma_write_transform *transform , struct ksmbd_file *fp , loff_t offset , size_t length , bool sync );

🎀 ARGUMENTS 🎀

• work — request work item. The request’s main character energy.
• desc — client RDMA buffer descriptors. The buffer-descriptor besties.
• desc_len — descriptor array length. How many descriptors are in the array, periodt.
• transform — parsed transform, or NULL for an untransformed transfer. So if this transfer is untransformed, this slot is NULL.
• fp — target open file. The file we are writing into.
• offset — target file offset. Where in the file this is landing.
• length — transfer length. How much is moving.
• sync — request synchronous storage completion. The “tell me when storage is done” switch.

🦋 DESCRIPTION 🦋

Okay so here’s the tea ☕: this function receives the payload, authenticates or decrypts it when required, and writes it to the target file. That is the whole flow, bestie 💖

🔥 RETURN 🔥

On success you get the written byte count — yes, the actual number of bytes — otherwise it is a negative errno. Honest queen behavior 💅

👑 SEE ALSO 👑

Go be nosy with the whole crew:

• Kernel file ./fs/smb/server/smb2pdu.c — the source-file home base for all this.
• smb2_get_ksmbd_tcon(9), smb2_set_err_rsp(9), is_smb2_neg_cmd(9), is_smb2_rsp(9), get_smb2_cmd_val(9), set_smb2_rsp_status(9), init_smb2_neg_rsp(9), smb2_set_rsp_credits(9)
• init_chained_smb2_rsp(9), is_chained_smb2_message(9), init_smb2_rsp_hdr(9), smb2_allocate_rsp_buf(9), smb2_check_user_session(9), smb2_get_name(9), smb2_get_dos_mode(9), build_rdma_ctx(9)
• smb3_encryption_negotiated(9), decode_rdma_ctx(9), smb2_handle_negotiate(9), smb2_tree_connect(9), smb2_create_open_flags(9), smb2_tree_disconnect(9), smb2_session_logoff(9), create_smb2_pipe(9)
• smb2_set_ea(9), smb2_open(9), smb2_populate_readdir_entry(9), buffer_check_err(9), smb2_get_ea(9), smb2_query_info(9), smb2_close_pipe(9), smb2_close(9)
• smb2_echo(9), smb2_set_info_file(9), smb2_set_info(9), smb2_read_pipe(9), smb2_set_rdma_key(9), smb2_prep_rdma_read(9), smb2_current_req_len(9), check_rdma_desc(9)
• smb2_parse_rdma_write_transform(9), smb2_read_rdma(9), smb2_read(9), smb2_write_pipe(9), smb2_write(9), smb2_flush(9), smb2_cancel(9), smb2_lock(9)
• smb2_ioctl(9), smb20_oplock_break_ack(9), smb21_lease_break_ack(9), smb2_oplock_break(9), smb2_notify(9), smb2_is_sign_req(9), smb2_check_sign_req(9), smb2_get_sign_rsp_iov(9)
• smb2_set_sign_rsp(9), smb3_check_sign_req(9), smb3_set_sign_rsp(9), smb3_preauth_hash_rsp(9)

Okay that is the page, bestie 🫶 This little icon is filed as smb2_write_rdma(9), lives under ./fs/smb/server, and is stamped October 2026. Mwah 💋