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https://github.com/projectacrn/acrn-hypervisor.git
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b23145b677
The sbuf will be used by DM to send and receive vm_events. Tracked-On: #8547 Signed-off-by: Wu Zhou <wu.zhou@intel.com> Reviewed-by: Jian Jun Chen <jian.jun.chen@intel.com>
40 lines
918 B
C
40 lines
918 B
C
/*
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* Copyright (C) 2018-2023 Intel Corporation.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef SHARED_BUF_H
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#define SHARED_BUF_H
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#include <linux/types.h>
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#include "acrn_common.h"
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static inline bool sbuf_is_empty(struct shared_buf *sbuf)
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{
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return (sbuf->head == sbuf->tail);
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}
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static inline void sbuf_clear_flags(struct shared_buf *sbuf, uint64_t flags)
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{
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sbuf->flags &= ~flags;
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}
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static inline void sbuf_set_flags(struct shared_buf *sbuf, uint64_t flags)
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{
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sbuf->flags = flags;
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}
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static inline void sbuf_add_flags(struct shared_buf *sbuf, uint64_t flags)
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{
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sbuf->flags |= flags;
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}
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uint32_t sbuf_get(struct shared_buf *sbuf, uint8_t *data);
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uint32_t sbuf_put(struct shared_buf *sbuf, uint8_t *data, uint32_t max_len);
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int sbuf_clear_buffered(struct shared_buf *sbuf);
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void sbuf_init(struct shared_buf *sbuf, uint32_t total_size, uint32_t ele_size);
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#endif /* SHARED_BUF_H */
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