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addr.h	4.94 MB	View DL Edit
auth.h	6.11 MB	View DL Edit
auth_gss.h	2.31 MB	View DL Edit
bc_xprt.h	2.81 MB	View DL Edit
cache.h	9.07 MB	View DL Edit
clnt.h	9.02 MB	View DL Edit
debug.h	2.76 MB	View DL Edit
gss_api.h	4.45 MB	View DL Edit
gss_asn1.h	3.11 MB	View DL Edit
gss_err.h	5.88 MB	View DL Edit
gss_krb5.h	6.32 MB	View DL Edit
metrics.h	3.68 MB	View DL Edit
msg_prot.h	6.21 MB	View DL Edit
rdma_rn.h	709 B	View DL Edit
rpc_pipe_fs.h	3.85 MB	View DL Edit
rpc_rdma.h	6.07 MB	View DL Edit
rpc_rdma_cid.h	622 B	View DL Edit
sched.h	10.06 MB	View DL Edit
stats.h	1.9 MB	View DL Edit
svc.h	18.81 MB	View DL Edit
svcauth.h	5.96 MB	View DL Edit
svcauth_gss.h	782 B	View DL Edit
svcsock.h	2.02 MB	View DL Edit
svc_rdma.h	10.38 MB	View DL Edit
svc_rdma_pcl.h	3.13 MB	View DL Edit
svc_xprt.h	7.51 MB	View DL Edit
timer.h	1.14 MB	View DL Edit
types.h	497 B	View DL Edit
xdr.h	22.35 MB	View DL Edit
xprt.h	16.36 MB	View DL Edit
xprtmultipath.h	2.41 MB	View DL Edit
xprtrdma.h	2.95 MB	View DL Edit
xprtsock.h	1.85 MB	View DL Edit

Edit file: /usr/src/kernels/5.14.0-611.34.1.el9_7.x86_64/include/linux/sunrpc/svc_rdma_pcl.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (c) 2020, Oracle and/or its affiliates
 */

#ifndef SVC_RDMA_PCL_H
#define SVC_RDMA_PCL_H

#include <linux/list.h>

struct svc_rdma_segment {
	u32			rs_handle;
	u32			rs_length;
	u64			rs_offset;
};

struct svc_rdma_chunk {
	struct list_head	ch_list;

u32			ch_position;
	u32			ch_length;
	u32			ch_payload_length;

u32			ch_segcount;
	struct svc_rdma_segment	ch_segments[];
};

struct svc_rdma_pcl {
	unsigned int		cl_count;
	struct list_head	cl_chunks;
};

/**
 * pcl_init - Initialize a parsed chunk list
 * @pcl: parsed chunk list to initialize
 *
 */
static inline void pcl_init(struct svc_rdma_pcl *pcl)
{
	INIT_LIST_HEAD(&pcl->cl_chunks);
}

/**
 * pcl_is_empty - Return true if parsed chunk list is empty
 * @pcl: parsed chunk list
 *
 */
static inline bool pcl_is_empty(const struct svc_rdma_pcl *pcl)
{
	return list_empty(&pcl->cl_chunks);
}

/**
 * pcl_first_chunk - Return first chunk in a parsed chunk list
 * @pcl: parsed chunk list
 *
 * Returns the first chunk in the list, or NULL if the list is empty.
 */
static inline struct svc_rdma_chunk *
pcl_first_chunk(const struct svc_rdma_pcl *pcl)
{
	if (pcl_is_empty(pcl))
		return NULL;
	return list_first_entry(&pcl->cl_chunks, struct svc_rdma_chunk,
				ch_list);
}

/**
 * pcl_next_chunk - Return next chunk in a parsed chunk list
 * @pcl: a parsed chunk list
 * @chunk: chunk in @pcl
 *
 * Returns the next chunk in the list, or NULL if @chunk is already last.
 */
static inline struct svc_rdma_chunk *
pcl_next_chunk(const struct svc_rdma_pcl *pcl, struct svc_rdma_chunk *chunk)
{
	if (list_is_last(&chunk->ch_list, &pcl->cl_chunks))
		return NULL;
	return list_next_entry(chunk, ch_list);
}

/**
 * pcl_for_each_chunk - Iterate over chunks in a parsed chunk list
 * @pos: the loop cursor
 * @pcl: a parsed chunk list
 */
#define pcl_for_each_chunk(pos, pcl) \
	for (pos = list_first_entry(&(pcl)->cl_chunks, struct svc_rdma_chunk, ch_list); \
	     &pos->ch_list != &(pcl)->cl_chunks; \
	     pos = list_next_entry(pos, ch_list))

/**
 * pcl_for_each_segment - Iterate over segments in a parsed chunk
 * @pos: the loop cursor
 * @chunk: a parsed chunk
 */
#define pcl_for_each_segment(pos, chunk) \
	for (pos = &(chunk)->ch_segments[0]; \
	     pos <= &(chunk)->ch_segments[(chunk)->ch_segcount - 1]; \
	     pos++)

/**
 * pcl_chunk_end_offset - Return offset of byte range following @chunk
 * @chunk: chunk in @pcl
 *
 * Returns starting offset of the region just after @chunk
 */
static inline unsigned int
pcl_chunk_end_offset(const struct svc_rdma_chunk *chunk)
{
	return xdr_align_size(chunk->ch_position + chunk->ch_payload_length);
}

struct svc_rdma_recv_ctxt;

extern void pcl_free(struct svc_rdma_pcl *pcl);
extern bool pcl_alloc_call(struct svc_rdma_recv_ctxt *rctxt, __be32 *p);
extern bool pcl_alloc_read(struct svc_rdma_recv_ctxt *rctxt, __be32 *p);
extern bool pcl_alloc_write(struct svc_rdma_recv_ctxt *rctxt,
			    struct svc_rdma_pcl *pcl, __be32 *p);
extern int pcl_process_nonpayloads(const struct svc_rdma_pcl *pcl,
				   const struct xdr_buf *xdr,
				   int (*actor)(const struct xdr_buf *,
						void *),
				   void *data);

#endif	/* SVC_RDMA_PCL_H */

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