enable docker ppp

hc

2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87

 kernel/arch/x86/um/asm/checksum.h
..
..
@@ -20,42 +20,6 @@
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  */
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 extern __wsum csum_partial(const void *buff, int len, __wsum sum);
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-/*
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- *	Note: when you get a NULL pointer exception here this means someone
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- *	passed in an incorrect kernel address to one of these functions.
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- *
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- *	If you use these functions directly please don't forget the
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- *	access_ok().
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- */
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-
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-static __inline__
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-__wsum csum_partial_copy_nocheck(const void *src, void *dst,
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-				       int len, __wsum sum)
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-{
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-	memcpy(dst, src, len);
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-	return csum_partial(dst, len, sum);
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-}
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-
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-/*
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- * the same as csum_partial, but copies from src while it
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- * checksums, and handles user-space pointer exceptions correctly, when needed.
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- *
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- * here even more important to align src and dst on a 32-bit (or even
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- * better 64-bit) boundary
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- */
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-
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-static __inline__
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-__wsum csum_partial_copy_from_user(const void __user *src, void *dst,
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-					 int len, __wsum sum, int *err_ptr)
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-{
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-	if (copy_from_user(dst, src, len)) {
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-		*err_ptr = -EFAULT;
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-		return (__force __wsum)-1;
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-	}
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-
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-	return csum_partial(dst, len, sum);
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-}
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-
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 /**
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  * csum_fold - Fold and invert a 32bit checksum.
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  * sum: 32bit unfolded sum