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Diffstat (limited to 'fs/smb/server/ksmbd_work.h')
-rw-r--r--fs/smb/server/ksmbd_work.h117
1 files changed, 117 insertions, 0 deletions
diff --git a/fs/smb/server/ksmbd_work.h b/fs/smb/server/ksmbd_work.h
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index 000000000000..f8ae6144c0ae
--- /dev/null
+++ b/fs/smb/server/ksmbd_work.h
@@ -0,0 +1,117 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2019 Samsung Electronics Co., Ltd.
+ */
+
+#ifndef __KSMBD_WORK_H__
+#define __KSMBD_WORK_H__
+
+#include <linux/ctype.h>
+#include <linux/workqueue.h>
+
+struct ksmbd_conn;
+struct ksmbd_session;
+struct ksmbd_tree_connect;
+
+enum {
+ KSMBD_WORK_ACTIVE = 0,
+ KSMBD_WORK_CANCELLED,
+ KSMBD_WORK_CLOSED,
+};
+
+/* one of these for every pending CIFS request at the connection */
+struct ksmbd_work {
+ /* Server corresponding to this mid */
+ struct ksmbd_conn *conn;
+ struct ksmbd_session *sess;
+ struct ksmbd_tree_connect *tcon;
+
+ /* Pointer to received SMB header */
+ void *request_buf;
+ /* Response buffer */
+ void *response_buf;
+
+ /* Read data buffer */
+ void *aux_payload_buf;
+
+ /* Next cmd hdr in compound req buf*/
+ int next_smb2_rcv_hdr_off;
+ /* Next cmd hdr in compound rsp buf*/
+ int next_smb2_rsp_hdr_off;
+
+ /*
+ * Current Local FID assigned compound response if SMB2 CREATE
+ * command is present in compound request
+ */
+ u64 compound_fid;
+ u64 compound_pfid;
+ u64 compound_sid;
+
+ const struct cred *saved_cred;
+
+ /* Number of granted credits */
+ unsigned int credits_granted;
+
+ /* response smb header size */
+ unsigned int resp_hdr_sz;
+ unsigned int response_sz;
+ /* Read data count */
+ unsigned int aux_payload_sz;
+
+ void *tr_buf;
+
+ unsigned char state;
+ /* Multiple responses for one request e.g. SMB ECHO */
+ bool multiRsp:1;
+ /* No response for cancelled request */
+ bool send_no_response:1;
+ /* Request is encrypted */
+ bool encrypted:1;
+ /* Is this SYNC or ASYNC ksmbd_work */
+ bool asynchronous:1;
+ bool need_invalidate_rkey:1;
+
+ unsigned int remote_key;
+ /* cancel works */
+ int async_id;
+ void **cancel_argv;
+ void (*cancel_fn)(void **argv);
+
+ struct work_struct work;
+ /* List head at conn->requests */
+ struct list_head request_entry;
+ /* List head at conn->async_requests */
+ struct list_head async_request_entry;
+ struct list_head fp_entry;
+ struct list_head interim_entry;
+};
+
+/**
+ * ksmbd_resp_buf_next - Get next buffer on compound response.
+ * @work: smb work containing response buffer
+ */
+static inline void *ksmbd_resp_buf_next(struct ksmbd_work *work)
+{
+ return work->response_buf + work->next_smb2_rsp_hdr_off + 4;
+}
+
+/**
+ * ksmbd_req_buf_next - Get next buffer on compound request.
+ * @work: smb work containing response buffer
+ */
+static inline void *ksmbd_req_buf_next(struct ksmbd_work *work)
+{
+ return work->request_buf + work->next_smb2_rcv_hdr_off + 4;
+}
+
+struct ksmbd_work *ksmbd_alloc_work_struct(void);
+void ksmbd_free_work_struct(struct ksmbd_work *work);
+
+void ksmbd_work_pool_destroy(void);
+int ksmbd_work_pool_init(void);
+
+int ksmbd_workqueue_init(void);
+void ksmbd_workqueue_destroy(void);
+bool ksmbd_queue_work(struct ksmbd_work *work);
+
+#endif /* __KSMBD_WORK_H__ */