[dpdk-dev] [PATCH v2] crypto/octeontx: use distinct metabuf pool for each queue

[Anoob Joseph <anoobj@marvell.com>]

The metabuf pool is shared across all queue pairs belonging to the
PMD. In order to prevent one queue pair from starving another,
use a distinct mempool for each queue pair.

Fixes: 273487f7b381 ("crypto/octeontx: add global resource init")

Signed-off-by: Anoob Joseph <anoobj@marvell.com>
---
v2:
* Mail server converted v1 patch file to DOS while sending. This caused
  checkpatch to report errors. Addressed this.

 drivers/common/cpt/cpt_common.h                   |  10 ++-
 drivers/common/cpt/cpt_ucode.h                    |  24 +++--
 drivers/crypto/octeontx/otx_cryptodev.c           |   3 -
 drivers/crypto/octeontx/otx_cryptodev_hw_access.c | 105 ++++++++++++++++++++--
 drivers/crypto/octeontx/otx_cryptodev_hw_access.h |   7 +-
 drivers/crypto/octeontx/otx_cryptodev_ops.c       |  98 ++------------------
 drivers/crypto/octeontx/otx_cryptodev_ops.h       |   3 -
 7 files changed, 127 insertions(+), 123 deletions(-)

diff --git a/drivers/common/cpt/cpt_common.h b/drivers/common/cpt/cpt_common.h
index ceb32f2..32f23ac 100644
--- a/drivers/common/cpt/cpt_common.h
+++ b/drivers/common/cpt/cpt_common.h
@@ -5,6 +5,8 @@
 #ifndef _CPT_COMMON_H_
 #define _CPT_COMMON_H_
 
+#include <rte_mempool.h>
+
 /*
  * This file defines common macros and structs
  */
@@ -38,10 +40,10 @@
 
 #define MOD_INC(i, l)   ((i) == (l - 1) ? (i) = 0 : (i)++)
 
-struct cptvf_meta_info {
-	void *cptvf_meta_pool;
-	int cptvf_op_mlen;
-	int cptvf_op_sb_mlen;
+struct cpt_qp_meta_info {
+	struct rte_mempool *pool;
+	int sg_mlen;
+	int lb_mlen;
 };
 
 struct rid {
diff --git a/drivers/common/cpt/cpt_ucode.h b/drivers/common/cpt/cpt_ucode.h
index 239c5df..f21352e 100644
--- a/drivers/common/cpt/cpt_ucode.h
+++ b/drivers/common/cpt/cpt_ucode.h
@@ -3147,7 +3147,7 @@ prepare_iov_from_pkt_inplace(struct rte_mbuf *pkt,
 static __rte_always_inline int
 fill_fc_params(struct rte_crypto_op *cop,
 	       struct cpt_sess_misc *sess_misc,
-	       struct cptvf_meta_info *cpt_m_info,
+	       struct cpt_qp_meta_info *m_info,
 	       void **mdata_ptr,
 	       void **prep_req)
 {
@@ -3365,15 +3365,11 @@ fill_fc_params(struct rte_crypto_op *cop,
 	}
 
 	if (likely(flags & SINGLE_BUF_HEADTAILROOM))
-		mdata = alloc_op_meta(m_src,
-				      &fc_params.meta_buf,
-				      cpt_m_info->cptvf_op_sb_mlen,
-				      cpt_m_info->cptvf_meta_pool);
+		mdata = alloc_op_meta(m_src, &fc_params.meta_buf,
+				      m_info->lb_mlen, m_info->pool);
 	else
-		mdata = alloc_op_meta(NULL,
-				      &fc_params.meta_buf,
-				      cpt_m_info->cptvf_op_mlen,
-				      cpt_m_info->cptvf_meta_pool);
+		mdata = alloc_op_meta(NULL, &fc_params.meta_buf,
+				      m_info->sg_mlen, m_info->pool);
 
 	if (unlikely(mdata == NULL)) {
 		CPT_LOG_DP_ERR("Error allocating meta buffer for request");
@@ -3410,7 +3406,7 @@ fill_fc_params(struct rte_crypto_op *cop,
 	return 0;
 
 free_mdata_and_exit:
-	free_op_meta(mdata, cpt_m_info->cptvf_meta_pool);
+	free_op_meta(mdata, m_info->pool);
 err_exit:
 	return ret;
 }
@@ -3521,7 +3517,7 @@ find_kasumif9_direction_and_length(uint8_t *src,
 static __rte_always_inline int
 fill_digest_params(struct rte_crypto_op *cop,
 		   struct cpt_sess_misc *sess,
-		   struct cptvf_meta_info *cpt_m_info,
+		   struct cpt_qp_meta_info *m_info,
 		   void **mdata_ptr,
 		   void **prep_req)
 {
@@ -3547,8 +3543,8 @@ fill_digest_params(struct rte_crypto_op *cop,
 	m_src = sym_op->m_src;
 
 	/* For just digest lets force mempool alloc */
-	mdata = alloc_op_meta(NULL, &params.meta_buf, cpt_m_info->cptvf_op_mlen,
-			      cpt_m_info->cptvf_meta_pool);
+	mdata = alloc_op_meta(NULL, &params.meta_buf, m_info->sg_mlen,
+			      m_info->pool);
 	if (mdata == NULL) {
 		ret = -ENOMEM;
 		goto err_exit;
@@ -3683,7 +3679,7 @@ fill_digest_params(struct rte_crypto_op *cop,
 	return 0;
 
 free_mdata_and_exit:
-	free_op_meta(mdata, cpt_m_info->cptvf_meta_pool);
+	free_op_meta(mdata, m_info->pool);
 err_exit:
 	return ret;
 }
diff --git a/drivers/crypto/octeontx/otx_cryptodev.c b/drivers/crypto/octeontx/otx_cryptodev.c
index b201e0a..fc64a5f 100644
--- a/drivers/crypto/octeontx/otx_cryptodev.c
+++ b/drivers/crypto/octeontx/otx_cryptodev.c
@@ -104,9 +104,6 @@ otx_cpt_pci_remove(struct rte_pci_device *pci_dev)
 	cryptodev->device = NULL;
 	cryptodev->data = NULL;
 
-	/* free metapool memory */
-	cleanup_global_resources();
-
 	return 0;
 }
 
diff --git a/drivers/crypto/octeontx/otx_cryptodev_hw_access.c b/drivers/crypto/octeontx/otx_cryptodev_hw_access.c
index 18f2e6b..eba6293 100644
--- a/drivers/crypto/octeontx/otx_cryptodev_hw_access.c
+++ b/drivers/crypto/octeontx/otx_cryptodev_hw_access.c
@@ -7,7 +7,9 @@
 
 #include <rte_branch_prediction.h>
 #include <rte_common.h>
+#include <rte_cryptodev.h>
 #include <rte_errno.h>
+#include <rte_mempool.h>
 #include <rte_memzone.h>
 #include <rte_string_fns.h>
 
@@ -15,8 +17,11 @@
 #include "otx_cryptodev_mbox.h"
 
 #include "cpt_pmd_logs.h"
+#include "cpt_pmd_ops_helper.h"
 #include "cpt_hw_types.h"
 
+#define METABUF_POOL_CACHE_SIZE	512
+
 /*
  * VF HAL functions
  * Access its own BAR0/4 registers by passing VF number as 0.
@@ -395,12 +400,90 @@ otx_cpt_deinit_device(void *dev)
 	return 0;
 }
 
+static int
+otx_cpt_metabuf_mempool_create(const struct rte_cryptodev *dev,
+			       struct cpt_instance *instance, uint8_t qp_id,
+			       int nb_elements)
+{
+	char mempool_name[RTE_MEMPOOL_NAMESIZE];
+	int sg_mlen, lb_mlen, max_mlen, ret;
+	struct cpt_qp_meta_info *meta_info;
+	struct rte_mempool *pool;
+
+	/* Get meta len for scatter gather mode */
+	sg_mlen = cpt_pmd_ops_helper_get_mlen_sg_mode();
+
+	/* Extra 32B saved for future considerations */
+	sg_mlen += 4 * sizeof(uint64_t);
+
+	/* Get meta len for linear buffer (direct) mode */
+	lb_mlen = cpt_pmd_ops_helper_get_mlen_direct_mode();
+
+	/* Extra 32B saved for future considerations */
+	lb_mlen += 4 * sizeof(uint64_t);
+
+	/* Check max requirement for meta buffer */
+	max_mlen = RTE_MAX(lb_mlen, sg_mlen);
+
+	/* Allocate mempool */
+
+	snprintf(mempool_name, RTE_MEMPOOL_NAMESIZE, "otx_cpt_mb_%u:%u",
+		 dev->data->dev_id, qp_id);
+
+	pool = rte_mempool_create_empty(mempool_name, nb_elements, max_mlen,
+					METABUF_POOL_CACHE_SIZE, 0,
+					rte_socket_id(), 0);
+
+	if (pool == NULL) {
+		CPT_LOG_ERR("Could not create mempool for metabuf");
+		return rte_errno;
+	}
+
+	ret = rte_mempool_set_ops_byname(pool, RTE_MBUF_DEFAULT_MEMPOOL_OPS,
+					 NULL);
+	if (ret) {
+		CPT_LOG_ERR("Could not set mempool ops");
+		goto mempool_free;
+	}
+
+	ret = rte_mempool_populate_default(pool);
+	if (ret <= 0) {
+		CPT_LOG_ERR("Could not populate metabuf pool");
+		goto mempool_free;
+	}
+
+	meta_info = &instance->meta_info;
+
+	meta_info->pool = pool;
+	meta_info->lb_mlen = lb_mlen;
+	meta_info->sg_mlen = sg_mlen;
+
+	return 0;
+
+mempool_free:
+	rte_mempool_free(pool);
+	return ret;
+}
+
+static void
+otx_cpt_metabuf_mempool_destroy(struct cpt_instance *instance)
+{
+	struct cpt_qp_meta_info *meta_info = &instance->meta_info;
+
+	rte_mempool_free(meta_info->pool);
+
+	meta_info->pool = NULL;
+	meta_info->lb_mlen = 0;
+	meta_info->sg_mlen = 0;
+}
+
 int
-otx_cpt_get_resource(void *dev, uint8_t group, struct cpt_instance **instance)
+otx_cpt_get_resource(const struct rte_cryptodev *dev, uint8_t group,
+		     struct cpt_instance **instance, uint16_t qp_id)
 {
 	int ret = -ENOENT, len, qlen, i;
 	int chunk_len, chunks, chunk_size;
-	struct cpt_vf *cptvf = (struct cpt_vf *)dev;
+	struct cpt_vf *cptvf = dev->data->dev_private;
 	struct cpt_instance *cpt_instance;
 	struct command_chunk *chunk_head = NULL, *chunk_prev = NULL;
 	struct command_chunk *chunk = NULL;
@@ -446,7 +529,7 @@ otx_cpt_get_resource(void *dev, uint8_t group, struct cpt_instance **instance)
 					 RTE_CACHE_LINE_SIZE);
 	if (!rz) {
 		ret = rte_errno;
-		goto cleanup;
+		goto exit;
 	}
 
 	mem = rz->addr;
@@ -457,6 +540,12 @@ otx_cpt_get_resource(void *dev, uint8_t group, struct cpt_instance **instance)
 
 	cpt_instance->rsvd = (uintptr_t)rz;
 
+	ret = otx_cpt_metabuf_mempool_create(dev, cpt_instance, qp_id, qlen);
+	if (ret) {
+		CPT_LOG_ERR("Could not create mempool for metabuf");
+		goto memzone_free;
+	}
+
 	/* Pending queue setup */
 	cptvf->pqueue.rid_queue = (struct rid *)mem;
 	cptvf->pqueue.enq_tail = 0;
@@ -513,7 +602,7 @@ otx_cpt_get_resource(void *dev, uint8_t group, struct cpt_instance **instance)
 		CPT_LOG_ERR("Failed to initialize CPT VQ of device %s",
 			    cptvf->dev_name);
 		ret = -EBUSY;
-		goto cleanup;
+		goto mempool_destroy;
 	}
 
 	*instance = cpt_instance;
@@ -521,8 +610,12 @@ otx_cpt_get_resource(void *dev, uint8_t group, struct cpt_instance **instance)
 	CPT_LOG_DP_DEBUG("Crypto device (%s) initialized", cptvf->dev_name);
 
 	return 0;
-cleanup:
+
+mempool_destroy:
+	otx_cpt_metabuf_mempool_destroy(cpt_instance);
+memzone_free:
 	rte_memzone_free(rz);
+exit:
 	*instance = NULL;
 	return ret;
 }
@@ -540,6 +633,8 @@ otx_cpt_put_resource(struct cpt_instance *instance)
 
 	CPT_LOG_DP_DEBUG("Releasing cpt device %s", cptvf->dev_name);
 
+	otx_cpt_metabuf_mempool_destroy(instance);
+
 	rz = (struct rte_memzone *)instance->rsvd;
 	rte_memzone_free(rz);
 	return 0;
diff --git a/drivers/crypto/octeontx/otx_cryptodev_hw_access.h b/drivers/crypto/octeontx/otx_cryptodev_hw_access.h
index dea4cba..63c199e 100644
--- a/drivers/crypto/octeontx/otx_cryptodev_hw_access.h
+++ b/drivers/crypto/octeontx/otx_cryptodev_hw_access.h
@@ -7,6 +7,7 @@
 #include <stdbool.h>
 
 #include <rte_branch_prediction.h>
+#include <rte_cryptodev.h>
 #include <rte_cycles.h>
 #include <rte_io.h>
 #include <rte_memory.h>
@@ -41,6 +42,7 @@ struct cpt_instance {
 	uintptr_t rsvd;
 	struct rte_mempool *sess_mp;
 	struct rte_mempool *sess_mp_priv;
+	struct cpt_qp_meta_info meta_info;
 };
 
 struct command_chunk {
@@ -76,8 +78,6 @@ struct cpt_vf {
 	struct command_queue cqueue;
 	/** Pending queue information */
 	struct pending_queue pqueue;
-	/** Meta information per vf */
-	struct cptvf_meta_info meta_info;
 
 	/** Below fields are accessed only in control path */
 
@@ -156,7 +156,8 @@ int
 otx_cpt_deinit_device(void *dev);
 
 int
-otx_cpt_get_resource(void *dev, uint8_t group, struct cpt_instance **instance);
+otx_cpt_get_resource(const struct rte_cryptodev *dev, uint8_t group,
+		     struct cpt_instance **instance, uint16_t qp_id);
 
 int
 otx_cpt_put_resource(struct cpt_instance *instance);
diff --git a/drivers/crypto/octeontx/otx_cryptodev_ops.c b/drivers/crypto/octeontx/otx_cryptodev_ops.c
index 0f9f2a2..9628ffa 100644
--- a/drivers/crypto/octeontx/otx_cryptodev_ops.c
+++ b/drivers/crypto/octeontx/otx_cryptodev_ops.c
@@ -6,10 +6,11 @@
 #include <rte_bus_pci.h>
 #include <rte_cryptodev.h>
 #include <rte_cryptodev_pmd.h>
+#include <rte_errno.h>
 #include <rte_malloc.h>
+#include <rte_mempool.h>
 
 #include "cpt_pmd_logs.h"
-#include "cpt_pmd_ops_helper.h"
 #include "cpt_ucode.h"
 
 #include "otx_cryptodev.h"
@@ -17,68 +18,11 @@
 #include "otx_cryptodev_hw_access.h"
 #include "otx_cryptodev_ops.h"
 
-static int otx_cryptodev_probe_count;
-static rte_spinlock_t otx_probe_count_lock = RTE_SPINLOCK_INITIALIZER;
-
-static struct rte_mempool *otx_cpt_meta_pool;
-static int otx_cpt_op_mlen;
-static int otx_cpt_op_sb_mlen;
-
 /* Forward declarations */
 
 static int
 otx_cpt_que_pair_release(struct rte_cryptodev *dev, uint16_t que_pair_id);
 
-/*
- * Initializes global variables used by fast-path code
- *
- * @return
- *   - 0 on success, errcode on error
- */
-static int
-init_global_resources(void)
-{
-	/* Get meta len for scatter gather mode */
-	otx_cpt_op_mlen = cpt_pmd_ops_helper_get_mlen_sg_mode();
-
-	/* Extra 4B saved for future considerations */
-	otx_cpt_op_mlen += 4 * sizeof(uint64_t);
-
-	otx_cpt_meta_pool = rte_mempool_create("cpt_metabuf-pool", 4096 * 16,
-					       otx_cpt_op_mlen, 512, 0,
-					       NULL, NULL, NULL, NULL,
-					       SOCKET_ID_ANY, 0);
-	if (!otx_cpt_meta_pool) {
-		CPT_LOG_ERR("cpt metabuf pool not created");
-		return -ENOMEM;
-	}
-
-	/* Get meta len for direct mode */
-	otx_cpt_op_sb_mlen = cpt_pmd_ops_helper_get_mlen_direct_mode();
-
-	/* Extra 4B saved for future considerations */
-	otx_cpt_op_sb_mlen += 4 * sizeof(uint64_t);
-
-	return 0;
-}
-
-void
-cleanup_global_resources(void)
-{
-	/* Take lock */
-	rte_spinlock_lock(&otx_probe_count_lock);
-
-	/* Decrement the cryptodev count */
-	otx_cryptodev_probe_count--;
-
-	/* Free buffers */
-	if (otx_cpt_meta_pool && otx_cryptodev_probe_count == 0)
-		rte_mempool_free(otx_cpt_meta_pool);
-
-	/* Free lock */
-	rte_spinlock_unlock(&otx_probe_count_lock);
-}
-
 /* Alarm routines */
 
 static void
@@ -187,7 +131,6 @@ otx_cpt_que_pair_setup(struct rte_cryptodev *dev,
 		       const struct rte_cryptodev_qp_conf *qp_conf,
 		       int socket_id __rte_unused)
 {
-	void *cptvf = dev->data->dev_private;
 	struct cpt_instance *instance = NULL;
 	struct rte_pci_device *pci_dev;
 	int ret = -1;
@@ -213,7 +156,7 @@ otx_cpt_que_pair_setup(struct rte_cryptodev *dev,
 		return -EIO;
 	}
 
-	ret = otx_cpt_get_resource(cptvf, 0, &instance);
+	ret = otx_cpt_get_resource(dev, 0, &instance, que_pair_id);
 	if (ret != 0 || instance == NULL) {
 		CPT_LOG_ERR("Error getting instance handle from device %s : "
 			    "ret = %d", dev->data->name, ret);
@@ -384,7 +327,6 @@ otx_cpt_enq_single_sym(struct cpt_instance *instance,
 	void *prep_req, *mdata = NULL;
 	int ret = 0;
 	uint64_t cpt_op;
-	struct cpt_vf *cptvf = (struct cpt_vf *)instance;
 
 	sess = (struct cpt_sess_misc *)
 			get_sym_session_private_data(sym_op->session,
@@ -393,10 +335,10 @@ otx_cpt_enq_single_sym(struct cpt_instance *instance,
 	cpt_op = sess->cpt_op;
 
 	if (likely(cpt_op & CPT_OP_CIPHER_MASK))
-		ret = fill_fc_params(op, sess, &cptvf->meta_info, &mdata,
+		ret = fill_fc_params(op, sess, &instance->meta_info, &mdata,
 				     &prep_req);
 	else
-		ret = fill_digest_params(op, sess, &cptvf->meta_info,
+		ret = fill_digest_params(op, sess, &instance->meta_info,
 					 &mdata, &prep_req);
 
 	if (unlikely(ret)) {
@@ -410,7 +352,7 @@ otx_cpt_enq_single_sym(struct cpt_instance *instance,
 
 	if (unlikely(ret)) {
 		/* Buffer allocated for request preparation need to be freed */
-		free_op_meta(mdata, cptvf->meta_info.cptvf_meta_pool);
+		free_op_meta(mdata, instance->meta_info.pool);
 		return ret;
 	}
 
@@ -618,7 +560,7 @@ otx_cpt_pkt_dequeue(void *qptr, struct rte_crypto_op **ops, uint16_t nb_ops)
 			rte_mempool_put(instance->sess_mp, cop->sym->session);
 			cop->sym->session = NULL;
 		}
-		free_op_meta(metabuf, cptvf->meta_info.cptvf_meta_pool);
+		free_op_meta(metabuf, instance->meta_info.pool);
 	}
 
 	return nb_completed;
@@ -644,14 +586,6 @@ static struct rte_cryptodev_ops cptvf_ops = {
 	.sym_session_clear = otx_cpt_session_clear
 };
 
-static void
-otx_cpt_common_vars_init(struct cpt_vf *cptvf)
-{
-	cptvf->meta_info.cptvf_meta_pool = otx_cpt_meta_pool;
-	cptvf->meta_info.cptvf_op_mlen = otx_cpt_op_mlen;
-	cptvf->meta_info.cptvf_op_sb_mlen = otx_cpt_op_sb_mlen;
-}
-
 int
 otx_cpt_dev_create(struct rte_cryptodev *c_dev)
 {
@@ -699,20 +633,6 @@ otx_cpt_dev_create(struct rte_cryptodev *c_dev)
 	/* Start off timer for mailbox interrupts */
 	otx_cpt_periodic_alarm_start(cptvf);
 
-	rte_spinlock_lock(&otx_probe_count_lock);
-	if (!otx_cryptodev_probe_count) {
-		ret = init_global_resources();
-		if (ret) {
-			rte_spinlock_unlock(&otx_probe_count_lock);
-			goto init_fail;
-		}
-	}
-	otx_cryptodev_probe_count++;
-	rte_spinlock_unlock(&otx_probe_count_lock);
-
-	/* Initialize data path variables used by common code */
-	otx_cpt_common_vars_init(cptvf);
-
 	c_dev->dev_ops = &cptvf_ops;
 
 	c_dev->enqueue_burst = otx_cpt_pkt_enqueue;
@@ -730,10 +650,6 @@ otx_cpt_dev_create(struct rte_cryptodev *c_dev)
 
 	return 0;
 
-init_fail:
-	otx_cpt_periodic_alarm_stop(cptvf);
-	otx_cpt_deinit_device(cptvf);
-
 fail:
 	if (cptvf) {
 		/* Free private data allocated */
diff --git a/drivers/crypto/octeontx/otx_cryptodev_ops.h b/drivers/crypto/octeontx/otx_cryptodev_ops.h
index b3efecf..768ec4f 100644
--- a/drivers/crypto/octeontx/otx_cryptodev_ops.h
+++ b/drivers/crypto/octeontx/otx_cryptodev_ops.h
@@ -9,9 +9,6 @@
 #define OTX_CPT_MIN_TAILROOM_REQ	(8)
 #define CPT_NUM_QS_PER_VF		(1)
 
-void
-cleanup_global_resources(void);
-
 int
 otx_cpt_dev_create(struct rte_cryptodev *c_dev);
 
-- 
2.9.5