[PATCH v1] eventdev/crypto: add memzone lookup

[Ganapati Kundapura]

Secondary process is not able to call the crypto adapter
api's stats get/reset as crypto adapter memzone memory is not accessible by
secondary process.

Added memzone lookup so that secondary process can call the
crypto adapter api's(stats_get etc)

Signed-off-by: Ganapati Kundapura <ganapati.kundap...@intel.com>

diff --git a/lib/eventdev/rte_event_crypto_adapter.c 
b/lib/eventdev/rte_event_crypto_adapter.c
index a11cbcf..7c9901c 100644
--- a/lib/eventdev/rte_event_crypto_adapter.c
+++ b/lib/eventdev/rte_event_crypto_adapter.c
@@ -33,6 +33,8 @@
  */
 #define CRYPTO_ENQ_FLUSH_THRESHOLD 1024
 
+#define ECA_ADAPTER_ARRAY "crypto_adapter_array"
+
 struct crypto_ops_circular_buffer {
        /* index of head element in circular buffer */
        uint16_t head;
@@ -138,7 +140,6 @@ eca_valid_id(uint8_t id)
 static int
 eca_init(void)
 {
-       const char *name = "crypto_adapter_array";
        const struct rte_memzone *mz;
        unsigned int sz;
 
@@ -146,9 +147,10 @@ eca_init(void)
            RTE_EVENT_CRYPTO_ADAPTER_MAX_INSTANCE;
        sz = RTE_ALIGN(sz, RTE_CACHE_LINE_SIZE);
 
-       mz = rte_memzone_lookup(name);
+       mz = rte_memzone_lookup(ECA_ADAPTER_ARRAY);
        if (mz == NULL) {
-               mz = rte_memzone_reserve_aligned(name, sz, rte_socket_id(), 0,
+               mz = rte_memzone_reserve_aligned(ECA_ADAPTER_ARRAY, sz,
+                                                rte_socket_id(), 0,
                                                 RTE_CACHE_LINE_SIZE);
                if (mz == NULL) {
                        RTE_EDEV_LOG_ERR("failed to reserve memzone err = %"
@@ -161,6 +163,22 @@ eca_init(void)
        return 0;
 }
 
+static int
+eca_memzone_lookup(void)
+{
+       const struct rte_memzone *mz;
+
+       if (event_crypto_adapter == NULL) {
+               mz = rte_memzone_lookup(ECA_ADAPTER_ARRAY);
+               if (mz == NULL)
+                       return -ENOMEM;
+
+               event_crypto_adapter = mz->addr;
+       }
+
+       return 0;
+}
+
 static inline bool
 eca_circular_buffer_batch_ready(struct crypto_ops_circular_buffer *bufp)
 {
@@ -1234,6 +1252,9 @@ rte_event_crypto_adapter_stats_get(uint8_t id,
        uint32_t i;
        int ret;
 
+       if (eca_memzone_lookup())
+               return -ENOMEM;
+
        EVENT_CRYPTO_ADAPTER_ID_VALID_OR_ERR_RET(id, -EINVAL);
 
        adapter = eca_id_to_adapter(id);
@@ -1275,6 +1296,9 @@ rte_event_crypto_adapter_stats_reset(uint8_t id)
        struct rte_eventdev *dev;
        uint32_t i;
 
+       if (eca_memzone_lookup())
+               return -ENOMEM;
+
        EVENT_CRYPTO_ADAPTER_ID_VALID_OR_ERR_RET(id, -EINVAL);
 
        adapter = eca_id_to_adapter(id);
-- 
2.6.4