Move crypto ops to circular buffer to retain crypto
ops when cryptodev/eventdev are temporarily full
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 d840803..4469a89 100644
--- a/lib/eventdev/rte_event_crypto_adapter.c
+++ b/lib/eventdev/rte_event_crypto_adapter.c
@@ -25,11 +25,27 @@
#define CRYPTO_ADAPTER_MEM_NAME_LEN 32
#define CRYPTO_ADAPTER_MAX_EV_ENQ_RETRIES 100
+#define CRYPTO_ADAPTER_OPS_BUFFER_SZ (BATCH_SIZE + BATCH_SIZE)
+#define CRYPTO_ADAPTER_BUFFER_SZ 1024
+
/* Flush an instance's enqueue buffers every CRYPTO_ENQ_FLUSH_THRESHOLD
* iterations of eca_crypto_adapter_enq_run()
*/
#define CRYPTO_ENQ_FLUSH_THRESHOLD 1024
+struct crypto_ops_circular_buffer {
+ /* index of head element in circular buffer */
+ uint16_t head;
+ /* index of tail element in circular buffer */
+ uint16_t tail;
+ /* number elements in buffer */
+ uint16_t count;
+ /* size of circular buffer */
+ uint16_t size;
+ /* Pointer to hold rte_crypto_ops for batching */
+ struct rte_crypto_op **op_buffer;
+} __rte_cache_aligned;
+
struct event_crypto_adapter {
/* Event device identifier */
uint8_t eventdev_id;
@@ -47,6 +63,8 @@ struct event_crypto_adapter {
struct crypto_device_info *cdevs;
/* Loop counter to flush crypto ops */
uint16_t transmit_loop_count;
+ /* Circular buffer for batching crypto ops to eventdev */
+ struct crypto_ops_circular_buffer ebuf;
/* Per instance stats structure */
struct rte_event_crypto_adapter_stats crypto_stats;
/* Configuration callback for rte_service configuration */
@@ -93,8 +111,8 @@ struct crypto_device_info {
struct crypto_queue_pair_info {
/* Set to indicate queue pair is enabled */
bool qp_enabled;
- /* Pointer to hold rte_crypto_ops for batching */
- struct rte_crypto_op **op_buffer;
+ /* Circular buffer for batching crypto ops to cdev */
+ struct crypto_ops_circular_buffer cbuf;
/* No of crypto ops accumulated */
uint8_t len;
} __rte_cache_aligned;
@@ -141,6 +159,77 @@ eca_init(void)
return 0;
}
+static inline bool
+eca_circular_buffer_batch_ready(struct crypto_ops_circular_buffer *bufp)
+{
+ return bufp->count >= BATCH_SIZE;
+}
+
+static inline void
+eca_circular_buffer_free(struct crypto_ops_circular_buffer *bufp)
+{
+ rte_free(bufp->op_buffer);
+}
+
+static inline int
+eca_circular_buffer_init(const char *name,
+ struct crypto_ops_circular_buffer *bufp,
+ uint16_t sz)
+{
+ bufp->op_buffer = rte_zmalloc(name,
+ sizeof(struct rte_crypto_op *) * sz,
+ 0);
+ if (bufp->op_buffer == NULL)
+ return -ENOMEM;
+
+ bufp->size = sz;
+ return 0;
+}
+
+static inline int
+eca_circular_buffer_add(struct crypto_ops_circular_buffer *bufp,
+ struct rte_crypto_op *op)
+{
+ uint16_t *tailp = &bufp->tail;
+
+ bufp->op_buffer[*tailp] = op;
+ *tailp = (*tailp + 1) % bufp->size;
+ bufp->count++;
+
+ return 0;
+}
+
+static inline int
+eca_circular_buffer_flush_to_cdev(struct crypto_ops_circular_buffer *bufp,
+ uint8_t cdev_id, uint16_t qp_id,
+ uint16_t *nb_ops_flushed)
+{
+ uint16_t n = 0;
+ uint16_t *headp = &bufp->head;
+ uint16_t *tailp = &bufp->tail;
+ struct rte_crypto_op **ops = bufp->op_buffer;
+
+ if (*tailp > *headp)
+ n = *tailp - *headp;
+ else if (*tailp < *headp)
+ n = bufp->size - *headp;
+ else {
+ *nb_ops_flushed = 0;
+ return 0; /* buffer empty */
+ }
+
+ *nb_ops_flushed = rte_cryptodev_enqueue_burst(cdev_id, qp_id,
+ &ops[*headp], n);
+ bufp->count -= *nb_ops_flushed;
+ if (!bufp->count) {
+ *headp = 0;
+ *tailp = 0;
+ } else
+ *headp = (*headp + *nb_ops_flushed) % bufp->size;
+
+ return *nb_ops_flushed == n ? 0 : -1;
+}
+
static inline struct event_crypto_adapter *
eca_id_to_adapter(uint8_t id)
{
@@ -237,10 +326,19 @@ rte_event_crypto_adapter_create_ext(uint8_t id, uint8_t
dev_id,
return -ENOMEM;
}
+ if (eca_circular_buffer_init("eca_edev_circular_buffer",
+ &adapter->ebuf,
+ CRYPTO_ADAPTER_BUFFER_SZ)) {
+ RTE_EDEV_LOG_ERR("Failed to get mem for edev buffer");
+ rte_free(adapter);
+ return -ENOMEM;
+ }
+
ret = rte_event_dev_info_get(dev_id, &dev_info);
if (ret < 0) {
RTE_EDEV_LOG_ERR("Failed to get info for eventdev %d: %s!",
dev_id, dev_info.driver_name);
+ eca_circular_buffer_free(&adapter->ebuf);
rte_free(adapter);
return ret;
}
@@ -259,6 +357,7 @@ rte_event_crypto_adapter_create_ext(uint8_t id, uint8_t
dev_id,
socket_id);
if (adapter->cdevs == NULL) {
RTE_EDEV_LOG_ERR("Failed to get mem for crypto devices\n");
+ eca_circular_buffer_free(&adapter->ebuf);
rte_free(adapter);
return -ENOMEM;
}
@@ -337,11 +436,10 @@ eca_enq_to_cryptodev(struct event_crypto_adapter
*adapter, struct rte_event *ev,
struct crypto_queue_pair_info *qp_info = NULL;
struct rte_crypto_op *crypto_op;
unsigned int i, n;
- uint16_t qp_id, len, ret;
+ uint16_t qp_id, len, nb_enqueued = 0;
uint8_t cdev_id;
len = 0;
- ret = 0;
n = 0;
stats->event_deq_count += cnt;
@@ -367,7 +465,7 @@ eca_enq_to_cryptodev(struct event_crypto_adapter *adapter,
struct rte_event *ev,
continue;
}
len = qp_info->len;
- qp_info->op_buffer[len] = crypto_op;
+ eca_circular_buffer_add(&qp_info->cbuf, crypto_op);
len++;
} else if (crypto_op->sess_type == RTE_CRYPTO_OP_SESSIONLESS &&
crypto_op->private_data_offset) {
@@ -383,7 +481,7 @@ eca_enq_to_cryptodev(struct event_crypto_adapter *adapter,
struct rte_event *ev,
continue;
}
len = qp_info->len;
- qp_info->op_buffer[len] = crypto_op;
+ eca_circular_buffer_add(&qp_info->cbuf, crypto_op);
len++;
} else {
rte_pktmbuf_free(crypto_op->sym->m_src);
@@ -391,18 +489,16 @@ eca_enq_to_cryptodev(struct event_crypto_adapter
*adapter, struct rte_event *ev,
continue;
}
- if (len == BATCH_SIZE) {
- struct rte_crypto_op **op_buffer = qp_info->op_buffer;
- ret = rte_cryptodev_enqueue_burst(cdev_id,
+ if (eca_circular_buffer_batch_ready(&qp_info->cbuf)) {
+ eca_circular_buffer_flush_to_cdev(&qp_info->cbuf,
+ cdev_id,
qp_id,
- op_buffer,
- BATCH_SIZE);
+ &nb_enqueued);
+ stats->crypto_enq_count += nb_enqueued;
- stats->crypto_enq_count += ret;
-
- while (ret < len) {
+ while (nb_enqueued < len) {
struct rte_crypto_op *op;
- op = op_buffer[ret++];
+ op = qp_info->cbuf.op_buffer[nb_enqueued++];
stats->crypto_enq_fail++;
rte_pktmbuf_free(op->sym->m_src);
rte_crypto_op_free(op);
@@ -413,7 +509,8 @@ eca_enq_to_cryptodev(struct event_crypto_adapter *adapter,
struct rte_event *ev,
if (qp_info)
qp_info->len = len;
- n += ret;
+
+ n += nb_enqueued;
}
return n;
@@ -425,14 +522,12 @@ eca_crypto_enq_flush(struct event_crypto_adapter *adapter)
struct rte_event_crypto_adapter_stats *stats = &adapter->crypto_stats;
struct crypto_device_info *curr_dev;
struct crypto_queue_pair_info *curr_queue;
- struct rte_crypto_op **op_buffer;
struct rte_cryptodev *dev;
uint8_t cdev_id;
uint16_t qp;
- uint16_t ret;
+ uint16_t nb_enqueued = 0, nb = 0;
uint16_t num_cdev = rte_cryptodev_count();
- ret = 0;
for (cdev_id = 0; cdev_id < num_cdev; cdev_id++) {
curr_dev = &adapter->cdevs[cdev_id];
dev = curr_dev->dev;
@@ -444,25 +539,26 @@ eca_crypto_enq_flush(struct event_crypto_adapter *adapter)
if (!curr_queue->qp_enabled)
continue;
- op_buffer = curr_queue->op_buffer;
- ret = rte_cryptodev_enqueue_burst(cdev_id,
+ eca_circular_buffer_flush_to_cdev(&curr_queue->cbuf,
+ cdev_id,
qp,
- op_buffer,
- curr_queue->len);
- stats->crypto_enq_count += ret;
+ &nb_enqueued);
+
+ stats->crypto_enq_count += nb_enqueued;
- while (ret < curr_queue->len) {
+ while (nb_enqueued < curr_queue->len) {
struct rte_crypto_op *op;
- op = op_buffer[ret++];
+ op = curr_queue->cbuf.op_buffer[nb_enqueued++];
stats->crypto_enq_fail++;
rte_pktmbuf_free(op->sym->m_src);
rte_crypto_op_free(op);
}
curr_queue->len = 0;
+ nb += nb_enqueued;
}
}
- return ret;
+ return nb;
}
static int
@@ -499,9 +595,9 @@ eca_crypto_adapter_enq_run(struct event_crypto_adapter
*adapter,
return nb_enqueued;
}
-static inline void
+static inline uint16_t
eca_ops_enqueue_burst(struct event_crypto_adapter *adapter,
- struct rte_crypto_op **ops, uint16_t num)
+ struct rte_crypto_op **ops, uint16_t num)
{
struct rte_event_crypto_adapter_stats *stats = &adapter->crypto_stats;
union rte_event_crypto_metadata *m_data = NULL;
@@ -518,6 +614,8 @@ eca_ops_enqueue_burst(struct event_crypto_adapter *adapter,
num = RTE_MIN(num, BATCH_SIZE);
for (i = 0; i < num; i++) {
struct rte_event *ev = &events[nb_ev++];
+
+ m_data = NULL;
if (ops[i]->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
m_data = rte_cryptodev_sym_session_get_user_data(
ops[i]->sym->session);
@@ -548,6 +646,7 @@ eca_ops_enqueue_burst(struct event_crypto_adapter *adapter,
event_port_id,
&events[nb_enqueued],
nb_ev - nb_enqueued);
+
} while (retry++ < CRYPTO_ADAPTER_MAX_EV_ENQ_RETRIES &&
nb_enqueued < nb_ev);
@@ -561,8 +660,52 @@ eca_ops_enqueue_burst(struct event_crypto_adapter *adapter,
stats->event_enq_fail_count += nb_ev - nb_enqueued;
stats->event_enq_count += nb_enqueued;
stats->event_enq_retry_count += retry - 1;
+
+ return nb_enqueued;
}
+static int
+eca_circular_buffer_flush_to_evdev(struct event_crypto_adapter *adapter,
+ struct crypto_ops_circular_buffer *bufp)
+{
+ uint16_t n = 0, nb_ops_flushed;
+ uint16_t *headp = &bufp->head;
+ uint16_t *tailp = &bufp->tail;
+ struct rte_crypto_op **ops = bufp->op_buffer;
+
+ if (*tailp > *headp)
+ n = *tailp - *headp;
+ else if (*tailp < *headp)
+ n = bufp->size - *headp;
+ else
+ return 0; /* buffer empty */
+
+ nb_ops_flushed = eca_ops_enqueue_burst(adapter, ops, n);
+ bufp->count -= nb_ops_flushed;
+ if (!bufp->count) {
+ *headp = 0;
+ *tailp = 0;
+ } else
+ *headp = (*headp + nb_ops_flushed) % bufp->size;
+
+ /* Stop further enqueue to eventdev, if nb_ops_flushed < n */
+ if (nb_ops_flushed < n)
+ return 0;
+
+ return 1;
+}
+
+
+static void
+eca_ops_buffer_flush(struct event_crypto_adapter *adapter)
+{
+ if (adapter->ebuf.count == 0)
+ return;
+
+ while (eca_circular_buffer_flush_to_evdev(adapter,
+ &adapter->ebuf))
+ ;
+}
static inline unsigned int
eca_crypto_adapter_deq_run(struct event_crypto_adapter *adapter,
unsigned int max_deq)
@@ -571,7 +714,7 @@ eca_crypto_adapter_deq_run(struct event_crypto_adapter
*adapter,
struct crypto_device_info *curr_dev;
struct crypto_queue_pair_info *curr_queue;
struct rte_crypto_op *ops[BATCH_SIZE];
- uint16_t n, nb_deq;
+ uint16_t n, nb_deq, nb_enqueued, i;
struct rte_cryptodev *dev;
uint8_t cdev_id;
uint16_t qp, dev_qps;
@@ -579,16 +722,20 @@ eca_crypto_adapter_deq_run(struct event_crypto_adapter
*adapter,
uint16_t num_cdev = rte_cryptodev_count();
nb_deq = 0;
+ eca_ops_buffer_flush(adapter);
+
do {
- uint16_t queues = 0;
done = true;
for (cdev_id = adapter->next_cdev_id;
cdev_id < num_cdev; cdev_id++) {
+ uint16_t queues = 0;
+
curr_dev = &adapter->cdevs[cdev_id];
dev = curr_dev->dev;
if (dev == NULL)
continue;
+
dev_qps = dev->data->nb_queue_pairs;
for (qp = curr_dev->next_queue_pair_id;
@@ -605,8 +752,24 @@ eca_crypto_adapter_deq_run(struct event_crypto_adapter
*adapter,
continue;
done = false;
+ nb_enqueued = 0;
+
stats->crypto_deq_count += n;
- eca_ops_enqueue_burst(adapter, ops, n);
+
+ if (unlikely(!adapter->ebuf.count))
+ nb_enqueued = eca_ops_enqueue_burst(
+ adapter, ops, n);
+
+ if (nb_enqueued == n)
+ goto check;
+
+ /* Failed to enqueue events case */
+ for (i = nb_enqueued; i < n; i++)
+ eca_circular_buffer_add(
+ &adapter->ebuf,
+ ops[nb_enqueued]);
+
+check:
nb_deq += n;
if (nb_deq > max_deq) {
@@ -751,11 +914,10 @@ eca_add_queue_pair(struct event_crypto_adapter *adapter,
uint8_t cdev_id,
return -ENOMEM;
qpairs = dev_info->qpairs;
- qpairs->op_buffer = rte_zmalloc_socket(adapter->mem_name,
- BATCH_SIZE *
- sizeof(struct rte_crypto_op *),
- 0, adapter->socket_id);
- if (!qpairs->op_buffer) {
+
+ if (eca_circular_buffer_init("eca_cdev_circular_buffer",
+ &qpairs->cbuf,
+ CRYPTO_ADAPTER_OPS_BUFFER_SZ)) {
rte_free(qpairs);
return -ENOMEM;
}
--
2.6.4
