X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=lib%2Flibrte_compressdev%2Frte_comp.c;fp=lib%2Flibrte_compressdev%2Frte_comp.c;h=d596ba872b1aef64d92657cd217dc0ea81e41b25;hb=1bd9b61222f3a81ffe770fc00b70ded6e760c42b;hp=0000000000000000000000000000000000000000;hpb=bb4e158029645f37809fcf81a3acddd6fa11f88a;p=deb_dpdk.git

diff --git a/lib/librte_compressdev/rte_comp.c b/lib/librte_compressdev/rte_comp.c
new file mode 100644
index 00000000..d596ba87
--- /dev/null
+++ b/lib/librte_compressdev/rte_comp.c
@@ -0,0 +1,207 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2017-2018 Intel Corporation
+ */
+
+#include "rte_comp.h"
+#include "rte_compressdev.h"
+#include "rte_compressdev_internal.h"
+
+const char * __rte_experimental
+rte_comp_get_feature_name(uint64_t flag)
+{
+	switch (flag) {
+	case RTE_COMP_FF_STATEFUL_COMPRESSION:
+		return "STATEFUL_COMPRESSION";
+	case RTE_COMP_FF_STATEFUL_DECOMPRESSION:
+		return "STATEFUL_DECOMPRESSION";
+	case RTE_COMP_FF_MBUF_SCATTER_GATHER:
+		return "MBUF_SCATTER_GATHER";
+	case RTE_COMP_FF_MULTI_PKT_CHECKSUM:
+		return "MULTI_PKT_CHECKSUM";
+	case RTE_COMP_FF_ADLER32_CHECKSUM:
+		return "ADLER32_CHECKSUM";
+	case RTE_COMP_FF_CRC32_CHECKSUM:
+		return "CRC32_CHECKSUM";
+	case RTE_COMP_FF_CRC32_ADLER32_CHECKSUM:
+		return "CRC32_ADLER32_CHECKSUM";
+	case RTE_COMP_FF_NONCOMPRESSED_BLOCKS:
+		return "NONCOMPRESSED_BLOCKS";
+	case RTE_COMP_FF_SHA1_HASH:
+		return "SHA1_HASH";
+	case RTE_COMP_FF_SHA2_SHA256_HASH:
+		return "SHA2_SHA256_HASH";
+	case RTE_COMP_FF_SHAREABLE_PRIV_XFORM:
+		return "SHAREABLE_PRIV_XFORM";
+	default:
+		return NULL;
+	}
+}
+
+/**
+ * Reset the fields of an operation to their default values.
+ *
+ * @note The private data associated with the operation is not zeroed.
+ *
+ * @param op
+ *   The operation to be reset
+ */
+static inline void
+rte_comp_op_reset(struct rte_comp_op *op)
+{
+	struct rte_mempool *tmp_mp = op->mempool;
+	rte_iova_t tmp_iova_addr = op->iova_addr;
+
+	memset(op, 0, sizeof(struct rte_comp_op));
+	op->status = RTE_COMP_OP_STATUS_NOT_PROCESSED;
+	op->iova_addr = tmp_iova_addr;
+	op->mempool = tmp_mp;
+}
+
+/**
+ * Private data structure belonging to an operation pool.
+ */
+struct rte_comp_op_pool_private {
+	uint16_t user_size;
+	/**< Size of private user data with each operation. */
+};
+
+/**
+ * Bulk allocate raw element from mempool and return as comp operations
+ *
+ * @param mempool
+ *   Compress operation mempool
+ * @param ops
+ *   Array to place allocated operations
+ * @param nb_ops
+ *   Number of operations to allocate
+ * @return
+ *   - 0: Success
+ *   - -ENOENT: Not enough entries in the mempool; no ops are retrieved.
+ */
+static inline int
+rte_comp_op_raw_bulk_alloc(struct rte_mempool *mempool,
+		struct rte_comp_op **ops, uint16_t nb_ops)
+{
+	if (rte_mempool_get_bulk(mempool, (void **)ops, nb_ops) == 0)
+		return nb_ops;
+
+	return 0;
+}
+
+/** Initialise rte_comp_op mempool element */
+static void
+rte_comp_op_init(struct rte_mempool *mempool,
+		__rte_unused void *opaque_arg,
+		void *_op_data,
+		__rte_unused unsigned int i)
+{
+	struct rte_comp_op *op = _op_data;
+
+	memset(_op_data, 0, mempool->elt_size);
+
+	op->status = RTE_COMP_OP_STATUS_NOT_PROCESSED;
+	op->iova_addr = rte_mem_virt2iova(_op_data);
+	op->mempool = mempool;
+}
+
+struct rte_mempool * __rte_experimental
+rte_comp_op_pool_create(const char *name,
+		unsigned int nb_elts, unsigned int cache_size,
+		uint16_t user_size, int socket_id)
+{
+	struct rte_comp_op_pool_private *priv;
+
+	unsigned int elt_size = sizeof(struct rte_comp_op) + user_size;
+
+	/* lookup mempool in case already allocated */
+	struct rte_mempool *mp = rte_mempool_lookup(name);
+
+	if (mp != NULL) {
+		priv = (struct rte_comp_op_pool_private *)
+				rte_mempool_get_priv(mp);
+
+		if (mp->elt_size != elt_size ||
+				mp->cache_size < cache_size ||
+				mp->size < nb_elts ||
+				priv->user_size <  user_size) {
+			mp = NULL;
+			COMPRESSDEV_LOG(ERR,
+		"Mempool %s already exists but with incompatible parameters",
+					name);
+			return NULL;
+		}
+		return mp;
+	}
+
+	mp = rte_mempool_create(
+			name,
+			nb_elts,
+			elt_size,
+			cache_size,
+			sizeof(struct rte_comp_op_pool_private),
+			NULL,
+			NULL,
+			rte_comp_op_init,
+			NULL,
+			socket_id,
+			0);
+
+	if (mp == NULL) {
+		COMPRESSDEV_LOG(ERR, "Failed to create mempool %s", name);
+		return NULL;
+	}
+
+	priv = (struct rte_comp_op_pool_private *)
+			rte_mempool_get_priv(mp);
+
+	priv->user_size = user_size;
+
+	return mp;
+}
+
+struct rte_comp_op * __rte_experimental
+rte_comp_op_alloc(struct rte_mempool *mempool)
+{
+	struct rte_comp_op *op = NULL;
+	int retval;
+
+	retval = rte_comp_op_raw_bulk_alloc(mempool, &op, 1);
+	if (unlikely(retval < 0))
+		return NULL;
+
+	rte_comp_op_reset(op);
+
+	return op;
+}
+
+int __rte_experimental
+rte_comp_op_bulk_alloc(struct rte_mempool *mempool,
+		struct rte_comp_op **ops, uint16_t nb_ops)
+{
+	int ret;
+	uint16_t i;
+
+	ret = rte_comp_op_raw_bulk_alloc(mempool, ops, nb_ops);
+	if (unlikely(ret < nb_ops))
+		return ret;
+
+	for (i = 0; i < nb_ops; i++)
+		rte_comp_op_reset(ops[i]);
+
+	return nb_ops;
+}
+
+/**
+ * free operation structure
+ * If operation has been allocate from a rte_mempool, then the operation will
+ * be returned to the mempool.
+ *
+ * @param op
+ *   Compress operation
+ */
+void __rte_experimental
+rte_comp_op_free(struct rte_comp_op *op)
+{
+	if (op != NULL && op->mempool != NULL)
+		rte_mempool_put(op->mempool, op);
+}