Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6

[linux-2.6-omap-h63xx.git] / include / linux / sunrpc / xdr.h

diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h
index 9a527c3643948a266bdcc862c2537e5f277a2f56..e4057d729f036c8a3b80e3100a704e03ef0c6d4a 100644 (file)
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -11,6 +11,8 @@
 
 #include <linux/uio.h>
 #include <asm/byteorder.h>
+#include <linux/scatterlist.h>
+#include <linux/smp_lock.h>
 
 /*
  * Buffer adjustment
@@ -34,6 +36,21 @@ struct xdr_netobj {
  */
 typedef int    (*kxdrproc_t)(void *rqstp, __be32 *data, void *obj);
 
+/*
+ * We're still requiring the BKL in the xdr code until it's been
+ * more carefully audited, at which point this wrapper will become
+ * unnecessary.
+ */
+static inline int rpc_call_xdrproc(kxdrproc_t xdrproc, void *rqstp, __be32 *data, void *obj)
+{
+       int ret;
+
+       lock_kernel();
+       ret = xdrproc(rqstp, data, obj);
+       unlock_kernel();
+       return ret;
+}
+
 /*
  * Basic structure for transmission/reception of a client XDR message.
  * Features a header (for a linear buffer containing RPC headers
@@ -53,7 +70,10 @@ struct xdr_buf {
 
        struct page **  pages;          /* Array of contiguous pages */
        unsigned int    page_base,      /* Start of page data */
-                       page_len;       /* Length 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 */
 
        unsigned int    buflen,         /* Total length of storage buffer */
                        len;            /* Length of XDR encoded message */
@@ -92,7 +112,8 @@ struct xdr_buf {
 __be32 *xdr_encode_opaque_fixed(__be32 *p, const void *ptr, unsigned int len);
 __be32 *xdr_encode_opaque(__be32 *p, const void *ptr, unsigned int len);
 __be32 *xdr_encode_string(__be32 *p, const char *s);
-__be32 *xdr_decode_string_inplace(__be32 *p, char **sp, int *lenp, int maxlen);
+__be32 *xdr_decode_string_inplace(__be32 *p, char **sp, unsigned int *lenp,
+                       unsigned int maxlen);
 __be32 *xdr_encode_netobj(__be32 *p, const struct xdr_netobj *);
 __be32 *xdr_decode_netobj(__be32 *p, struct xdr_netobj *);
 
@@ -139,29 +160,30 @@ xdr_adjust_iovec(struct kvec *iov, __be32 *p)
  */
 extern void xdr_shift_buf(struct xdr_buf *, size_t);
 extern void xdr_buf_from_iov(struct kvec *, struct xdr_buf *);
-extern int xdr_buf_subsegment(struct xdr_buf *, struct xdr_buf *, int, int);
-extern int xdr_buf_read_netobj(struct xdr_buf *, struct xdr_netobj *, int);
-extern int read_bytes_from_xdr_buf(struct xdr_buf *, int, void *, int);
-extern int write_bytes_to_xdr_buf(struct xdr_buf *, int, void *, int);
+extern int xdr_buf_subsegment(struct xdr_buf *, struct xdr_buf *, unsigned int, 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.
  */
-typedef struct {
+struct xdr_skb_reader {
        struct sk_buff  *skb;
        unsigned int    offset;
        size_t          count;
        __wsum          csum;
-} skb_reader_t;
+};
 
-typedef size_t (*skb_read_actor_t)(skb_reader_t *desc, void *to, size_t len);
+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,
-               skb_reader_t *, skb_read_actor_t);
+               struct xdr_skb_reader *, xdr_skb_read_actor);
 
-extern int xdr_encode_word(struct xdr_buf *, int, u32);
-extern int xdr_decode_word(struct xdr_buf *, int, u32 *);
+extern int xdr_encode_word(struct xdr_buf *, unsigned int, u32);
+extern int xdr_decode_word(struct xdr_buf *, unsigned int, u32 *);
 
 struct xdr_array2_desc;
 typedef int (*xdr_xcode_elem_t)(struct xdr_array2_desc *desc, void *elem);
@@ -196,6 +218,7 @@ extern void xdr_init_decode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32
 extern __be32 *xdr_inline_decode(struct xdr_stream *xdr, size_t nbytes);
 extern void 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);
 
 #endif /* __KERNEL__ */