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SUNRPC: Add the helper xdr_stream_pos

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Add a helper to report the current offset from the start of the
xdr_stream.

Signed-off-by: Trond Myklebust <[email protected]>
This commit is contained in:
Trond Myklebust 2012-06-21 17:14:46 -04:00
commit 4517d526c8
2 changed files with 11 additions and 0 deletions
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10
net/sunrpc/xdr.c
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@ -454,6 +454,16 @@ xdr_shift_buf(struct xdr_buf *buf, size_t len)
}
EXPORT_SYMBOL_GPL(xdr_shift_buf);
/**
* xdr_stream_pos - Return the current offset from the start of the xdr_stream
* @xdr: pointer to struct xdr_stream
*/
unsigned int xdr_stream_pos(const struct xdr_stream *xdr)
{
return (unsigned int)(XDR_QUADLEN(xdr->buf->len) - xdr->nwords) << 2;
}
EXPORT_SYMBOL_GPL(xdr_stream_pos);
/**
* xdr_init_encode - Initialize a struct xdr_stream for sending data.
* @xdr: pointer to xdr_stream struct