From f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 01:04:47 +0000
Subject: [PATCH] add driver 5G
---
kernel/include/linux/sunrpc/xdr.h | 143 +++++++++++++++++++++++++++++++++++++++--------
1 files changed, 119 insertions(+), 24 deletions(-)
diff --git a/kernel/include/linux/sunrpc/xdr.h b/kernel/include/linux/sunrpc/xdr.h
index 33580cc..6d9d152 100644
--- a/kernel/include/linux/sunrpc/xdr.h
+++ b/kernel/include/linux/sunrpc/xdr.h
@@ -11,13 +11,12 @@
#ifndef _SUNRPC_XDR_H_
#define _SUNRPC_XDR_H_
-#ifdef __KERNEL__
-
#include <linux/uio.h>
#include <asm/byteorder.h>
#include <asm/unaligned.h>
#include <linux/scatterlist.h>
+struct bio_vec;
struct rpc_rqst;
/*
@@ -51,12 +50,14 @@
struct kvec head[1], /* RPC header + non-page data */
tail[1]; /* Appended after page data */
+ struct bio_vec *bvec;
struct page ** pages; /* Array of pages */
unsigned int page_base, /* Start of page data */
page_len, /* Length of page data */
flags; /* Flags for data disposition */
#define XDRBUF_READ 0x01 /* target of file read */
#define XDRBUF_WRITE 0x02 /* source of file write */
+#define XDRBUF_SPARSE_PAGES 0x04 /* Page array is sparse */
unsigned int buflen, /* Total length of storage buffer */
len; /* Length of XDR encoded message */
@@ -68,6 +69,7 @@
buf->head[0].iov_base = start;
buf->head[0].iov_len = len;
buf->tail[0].iov_len = 0;
+ buf->pages = NULL;
buf->page_len = 0;
buf->flags = 0;
buf->len = 0;
@@ -82,6 +84,16 @@
#define xdr_one cpu_to_be32(1)
#define xdr_two cpu_to_be32(2)
+#define rpc_auth_null cpu_to_be32(RPC_AUTH_NULL)
+#define rpc_auth_unix cpu_to_be32(RPC_AUTH_UNIX)
+#define rpc_auth_short cpu_to_be32(RPC_AUTH_SHORT)
+#define rpc_auth_gss cpu_to_be32(RPC_AUTH_GSS)
+
+#define rpc_call cpu_to_be32(RPC_CALL)
+#define rpc_reply cpu_to_be32(RPC_REPLY)
+
+#define rpc_msg_accepted cpu_to_be32(RPC_MSG_ACCEPTED)
+
#define rpc_success cpu_to_be32(RPC_SUCCESS)
#define rpc_prog_unavail cpu_to_be32(RPC_PROG_UNAVAIL)
#define rpc_prog_mismatch cpu_to_be32(RPC_PROG_MISMATCH)
@@ -89,6 +101,9 @@
#define rpc_garbage_args cpu_to_be32(RPC_GARBAGE_ARGS)
#define rpc_system_err cpu_to_be32(RPC_SYSTEM_ERR)
#define rpc_drop_reply cpu_to_be32(RPC_DROP_REPLY)
+
+#define rpc_mismatch cpu_to_be32(RPC_MISMATCH)
+#define rpc_auth_error cpu_to_be32(RPC_AUTH_ERROR)
#define rpc_auth_ok cpu_to_be32(RPC_AUTH_OK)
#define rpc_autherr_badcred cpu_to_be32(RPC_AUTH_BADCRED)
@@ -98,7 +113,6 @@
#define rpc_autherr_tooweak cpu_to_be32(RPC_AUTH_TOOWEAK)
#define rpcsec_gsserr_credproblem cpu_to_be32(RPCSEC_GSS_CREDPROBLEM)
#define rpcsec_gsserr_ctxproblem cpu_to_be32(RPCSEC_GSS_CTXPROBLEM)
-#define rpc_autherr_oldseqnum cpu_to_be32(101)
/*
* Miscellaneous XDR helper functions
@@ -114,6 +128,9 @@
void xdr_inline_pages(struct xdr_buf *, unsigned int,
struct page **, unsigned int, unsigned int);
void xdr_terminate_string(struct xdr_buf *, const u32);
+size_t xdr_buf_pagecount(struct xdr_buf *buf);
+int xdr_alloc_bvec(struct xdr_buf *buf, gfp_t gfp);
+void xdr_free_bvec(struct xdr_buf *buf);
static inline __be32 *xdr_encode_array(__be32 *p, const void *s, unsigned int len)
{
@@ -144,6 +161,13 @@
return p + XDR_QUADLEN(len);
}
+static inline void xdr_netobj_dup(struct xdr_netobj *dst,
+ struct xdr_netobj *src, gfp_t gfp_mask)
+{
+ dst->data = kmemdup(src->data, src->len, gfp_mask);
+ dst->len = src->len;
+}
+
/*
* Adjust kvec to reflect end of xdr'ed data (RPC client XDR)
*/
@@ -160,26 +184,8 @@
extern void xdr_buf_from_iov(struct kvec *, struct xdr_buf *);
extern int xdr_buf_subsegment(struct xdr_buf *, struct xdr_buf *, unsigned int, unsigned int);
extern void xdr_buf_trim(struct xdr_buf *, unsigned int);
-extern int xdr_buf_read_netobj(struct xdr_buf *, struct xdr_netobj *, unsigned int);
extern int read_bytes_from_xdr_buf(struct xdr_buf *, unsigned int, void *, unsigned int);
extern int write_bytes_to_xdr_buf(struct xdr_buf *, unsigned int, void *, unsigned int);
-
-/*
- * Helper structure for copying from an sk_buff.
- */
-struct xdr_skb_reader {
- struct sk_buff *skb;
- unsigned int offset;
- size_t count;
- __wsum csum;
-};
-
-typedef size_t (*xdr_skb_read_actor)(struct xdr_skb_reader *desc, void *to, size_t len);
-
-size_t xdr_skb_read_bits(struct xdr_skb_reader *desc, void *to, size_t len);
-extern int csum_partial_copy_to_xdr(struct xdr_buf *, struct sk_buff *);
-extern ssize_t xdr_partial_copy_from_skb(struct xdr_buf *, unsigned int,
- struct xdr_skb_reader *, xdr_skb_read_actor);
extern int xdr_encode_word(struct xdr_buf *, unsigned int, u32);
extern int xdr_decode_word(struct xdr_buf *, unsigned int, u32 *);
@@ -212,6 +218,8 @@
struct kvec scratch; /* Scratch buffer */
struct page **page_ptr; /* pointer to the current page */
unsigned int nwords; /* Remaining decode buffer length */
+
+ struct rpc_rqst *rqst; /* For debugging */
};
/*
@@ -222,15 +230,20 @@
typedef int (*kxdrdproc_t)(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
void *obj);
-extern void xdr_init_encode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p);
+extern void xdr_init_encode(struct xdr_stream *xdr, struct xdr_buf *buf,
+ __be32 *p, struct rpc_rqst *rqst);
extern __be32 *xdr_reserve_space(struct xdr_stream *xdr, size_t nbytes);
+extern int xdr_reserve_space_vec(struct xdr_stream *xdr, struct kvec *vec,
+ size_t nbytes);
extern void xdr_commit_encode(struct xdr_stream *xdr);
extern void xdr_truncate_encode(struct xdr_stream *xdr, size_t len);
extern int xdr_restrict_buflen(struct xdr_stream *xdr, int newbuflen);
extern void xdr_write_pages(struct xdr_stream *xdr, struct page **pages,
unsigned int base, unsigned int len);
extern unsigned int xdr_stream_pos(const struct xdr_stream *xdr);
-extern void xdr_init_decode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p);
+extern unsigned int xdr_page_pos(const struct xdr_stream *xdr);
+extern void xdr_init_decode(struct xdr_stream *xdr, struct xdr_buf *buf,
+ __be32 *p, struct rpc_rqst *rqst);
extern void xdr_init_decode_pages(struct xdr_stream *xdr, struct xdr_buf *buf,
struct page **pages, unsigned int len);
extern void xdr_set_scratch_buffer(struct xdr_stream *xdr, void *buf, size_t buflen);
@@ -238,6 +251,8 @@
extern unsigned int xdr_read_pages(struct xdr_stream *xdr, unsigned int len);
extern void xdr_enter_page(struct xdr_stream *xdr, unsigned int len);
extern int xdr_process_buf(struct xdr_buf *buf, unsigned int offset, unsigned int len, int (*actor)(struct scatterlist *, void *), void *data);
+extern uint64_t xdr_align_data(struct xdr_stream *, uint64_t, uint32_t);
+extern uint64_t xdr_expand_hole(struct xdr_stream *, uint64_t, uint64_t);
/**
* xdr_stream_remaining - Return the number of bytes remaining in the stream
@@ -273,6 +288,59 @@
const size_t mask = sizeof(__u32) - 1;
return (n + mask) & ~mask;
+}
+
+/**
+ * xdr_pad_size - Calculate size of an object's pad
+ * @n: Size of an object being XDR encoded (in bytes)
+ *
+ * This implementation avoids the need for conditional
+ * branches or modulo division.
+ *
+ * Return value:
+ * Size (in bytes) of the needed XDR pad
+ */
+static inline size_t xdr_pad_size(size_t n)
+{
+ return xdr_align_size(n) - n;
+}
+
+/**
+ * xdr_stream_encode_item_present - Encode a "present" list item
+ * @xdr: pointer to xdr_stream
+ *
+ * Return values:
+ * On success, returns length in bytes of XDR buffer consumed
+ * %-EMSGSIZE on XDR buffer overflow
+ */
+static inline ssize_t xdr_stream_encode_item_present(struct xdr_stream *xdr)
+{
+ const size_t len = sizeof(__be32);
+ __be32 *p = xdr_reserve_space(xdr, len);
+
+ if (unlikely(!p))
+ return -EMSGSIZE;
+ *p = xdr_one;
+ return len;
+}
+
+/**
+ * xdr_stream_encode_item_absent - Encode a "not present" list item
+ * @xdr: pointer to xdr_stream
+ *
+ * Return values:
+ * On success, returns length in bytes of XDR buffer consumed
+ * %-EMSGSIZE on XDR buffer overflow
+ */
+static inline int xdr_stream_encode_item_absent(struct xdr_stream *xdr)
+{
+ const size_t len = sizeof(__be32);
+ __be32 *p = xdr_reserve_space(xdr, len);
+
+ if (unlikely(!p))
+ return -EMSGSIZE;
+ *p = xdr_zero;
+ return len;
}
/**
@@ -411,6 +479,32 @@
}
/**
+ * xdr_item_is_absent - symbolically handle XDR discriminators
+ * @p: pointer to undecoded discriminator
+ *
+ * Return values:
+ * %true if the following XDR item is absent
+ * %false if the following XDR item is present
+ */
+static inline bool xdr_item_is_absent(const __be32 *p)
+{
+ return *p == xdr_zero;
+}
+
+/**
+ * xdr_item_is_present - symbolically handle XDR discriminators
+ * @p: pointer to undecoded discriminator
+ *
+ * Return values:
+ * %true if the following XDR item is present
+ * %false if the following XDR item is absent
+ */
+static inline bool xdr_item_is_present(const __be32 *p)
+{
+ return *p != xdr_zero;
+}
+
+/**
* xdr_stream_decode_u32 - Decode a 32-bit integer
* @xdr: pointer to xdr_stream
* @ptr: location to store integer
@@ -509,6 +603,8 @@
if (unlikely(xdr_stream_decode_u32(xdr, &len) < 0))
return -EBADMSG;
+ if (len > SIZE_MAX / sizeof(*p))
+ return -EBADMSG;
p = xdr_inline_decode(xdr, len * sizeof(*p));
if (unlikely(!p))
return -EBADMSG;
@@ -525,6 +621,5 @@
*array = be32_to_cpup(p);
return retval;
}
-#endif /* __KERNEL__ */
#endif /* _SUNRPC_XDR_H_ */
--
Gitblit v1.6.2