enable docker ppp

hc

2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87

 kernel/arch/x86/um/asm/checksum_32.h
..
..
@@ -35,27 +35,4 @@
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 	return csum_fold(sum);
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 }
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-/*
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- *	Copy and checksum to user
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- */
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-#define HAVE_CSUM_COPY_USER
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-static __inline__ __wsum csum_and_copy_to_user(const void *src,
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-						     void __user *dst,
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-						     int len, __wsum sum, int *err_ptr)
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-{
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-	if (access_ok(VERIFY_WRITE, dst, len)) {
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-		if (copy_to_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(src, len, sum);
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-	}
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-
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-	if (len)
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-		*err_ptr = -EFAULT;
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-
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-	return (__force __wsum)-1; /* invalid checksum */
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-}
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-
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 #endif