[dpdk-dev,05/13] cryptodev: add crypto op helper macros
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Commit Message
In order to facilitate the access to the private data,
after the crypto operation, two new macros have been
implemented:
- rte_crypto_op_ctod_offset(c,t,o), which returns a pointer
to "o" bytes after the start of the crypto operation
- rte_crypto_op_ctophys_offset(c, o), which returns
the physical address of the data "o" bytes after the
start of the crypto operation
Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
---
lib/librte_cryptodev/rte_cryptodev.h | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
@@ -118,6 +118,35 @@ extern const char **rte_cyptodev_names;
#define CDEV_PMD_TRACE(...) (void)0
#endif
+
+
+/**
+ * A macro that points to an offset into the crypto operation structure.
+ *
+ * The returned pointer is cast to type t.
+ *
+ * @param c
+ * The crypto operation.
+ * @param o
+ * The offset into the crypto operation.
+ * @param t
+ * The type to cast the result into.
+ */
+#define rte_crypto_op_ctod_offset(c, t, o) \
+ ((t)((char *)(c) + (o)))
+
+/**
+ * A macro that returns the physical address that points
+ * to an offset of the start of the crypto operation
+ *
+ * @param c
+ * The crypto operation.
+ * @param o
+ * The offset into the data to calculate address from.
+ */
+#define rte_crypto_op_ctophys_offset(c, o) \
+ (phys_addr_t)((c)->phys_addr + (o))
+
/**
* Crypto parameters range description
*/