D28949.id85076.diff
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	Index: sys/opencrypto/criov.c
	===================================================================
	--- sys/opencrypto/criov.c
	+++ sys/opencrypto/criov.c
	@@ -269,6 +269,13 @@
	}
	}

	+void
	+crypto_cursor_copy(const struct crypto_buffer_cursor *fromc,
	+ struct crypto_buffer_cursor *toc)
	+{
	+ memcpy(toc, fromc, sizeof(struct crypto_buffer_cursor));
	+}
	+
	SDT_PROBE_DEFINE2(opencrypto, criov, cursor_advance, vmpage, "struct crypto_buffer_cursor*", "size_t");

	void
	Index: sys/opencrypto/cryptodev.h
	===================================================================
	--- sys/opencrypto/cryptodev.h
	+++ sys/opencrypto/cryptodev.h
	@@ -698,6 +698,8 @@
	size_t crypto_buffer_len(struct crypto_buffer *cb);
	void crypto_cursor_init(struct crypto_buffer_cursor *cc,
	const struct crypto_buffer *cb);
	+void crypto_cursor_copy(const struct crypto_buffer_cursor *fromc,
	+ struct crypto_buffer_cursor *toc);
	void crypto_cursor_advance(struct crypto_buffer_cursor *cc, size_t amount);
	void crypto_cursor_segbase(struct crypto_buffer_cursor cc);
	size_t crypto_cursor_seglen(struct crypto_buffer_cursor *cc);