* Copyright 2020 Mellanox Technologies, Ltd
*/
+#include <string.h>
+
+#include <rte_memory.h>
+#include <rte_memcpy.h>
+#include <rte_memzone.h>
+#include <rte_string_fns.h>
+
#include "rte_regexdev.h"
+#include "rte_regexdev_core.h"
+#include "rte_regexdev_driver.h"
+
+static const char *MZ_RTE_REGEXDEV_DATA = "rte_regexdev_data";
+static struct rte_regexdev regex_devices[RTE_MAX_REGEXDEV_DEVS];
+/* Shared memory between primary and secondary processes. */
+static struct {
+ struct rte_regexdev_data data[RTE_MAX_REGEXDEV_DEVS];
+} *rte_regexdev_shared_data;
+
+int rte_regexdev_logtype;
+
+static uint16_t
+regexdev_find_free_dev(void)
+{
+ uint16_t i;
+
+ for (i = 0; i < RTE_MAX_REGEXDEV_DEVS; i++) {
+ if (regex_devices[i].state == RTE_REGEXDEV_UNUSED)
+ return i;
+ }
+ return RTE_MAX_REGEXDEV_DEVS;
+}
+
+static struct rte_regexdev*
+regexdev_allocated(const char *name)
+{
+ uint16_t i;
+
+ for (i = 0; i < RTE_MAX_REGEXDEV_DEVS; i++) {
+ if (regex_devices[i].state != RTE_REGEXDEV_UNUSED)
+ if (!strcmp(name, regex_devices[i].data->dev_name))
+ return ®ex_devices[i];
+ }
+ return NULL;
+}
+
+static int
+regexdev_shared_data_prepare(void)
+{
+ const unsigned int flags = 0;
+ const struct rte_memzone *mz;
+
+ if (rte_regexdev_shared_data == NULL) {
+ /* Allocate port data and ownership shared memory. */
+ mz = rte_memzone_reserve(MZ_RTE_REGEXDEV_DATA,
+ sizeof(*rte_regexdev_shared_data),
+ rte_socket_id(), flags);
+ if (mz == NULL)
+ return -ENOMEM;
+
+ rte_regexdev_shared_data = mz->addr;
+ memset(rte_regexdev_shared_data->data, 0,
+ sizeof(rte_regexdev_shared_data->data));
+ }
+ return 0;
+}
+
+static int
+regexdev_check_name(const char *name)
+{
+ size_t name_len;
+
+ if (name == NULL) {
+ RTE_REGEXDEV_LOG(ERR, "Name can't be NULL\n");
+ return -EINVAL;
+ }
+ name_len = strnlen(name, RTE_REGEXDEV_NAME_MAX_LEN);
+ if (name_len == 0) {
+ RTE_REGEXDEV_LOG(ERR, "Zero length RegEx device name\n");
+ return -EINVAL;
+ }
+ if (name_len >= RTE_REGEXDEV_NAME_MAX_LEN) {
+ RTE_REGEXDEV_LOG(ERR, "RegEx device name is too long\n");
+ return -EINVAL;
+ }
+ return (int)name_len;
+
+}
+
+struct rte_regexdev *
+rte_regexdev_register(const char *name)
+{
+ uint16_t dev_id;
+ int name_len;
+ struct rte_regexdev *dev;
+
+ name_len = regexdev_check_name(name);
+ if (name_len < 0)
+ return NULL;
+ dev = regexdev_allocated(name);
+ if (dev != NULL) {
+ RTE_REGEXDEV_LOG(ERR, "RegEx device already allocated\n");
+ return NULL;
+ }
+ dev_id = regexdev_find_free_dev();
+ if (dev_id == RTE_MAX_REGEXDEV_DEVS) {
+ RTE_REGEXDEV_LOG
+ (ERR, "Reached maximum number of RegEx devices\n");
+ return NULL;
+ }
+ if (regexdev_shared_data_prepare() < 0) {
+ RTE_REGEXDEV_LOG(ERR, "Cannot allocate RegEx shared data\n");
+ return NULL;
+ }
+
+ dev = ®ex_devices[dev_id];
+ dev->state = RTE_REGEXDEV_REGISTERED;
+ if (dev->data == NULL)
+ dev->data = &rte_regexdev_shared_data->data[dev_id];
+ else
+ memset(dev->data, 1, sizeof(*dev->data));
+ dev->data->dev_id = dev_id;
+ strlcpy(dev->data->dev_name, name, sizeof(dev->data->dev_name));
+ return dev;
+}
+
+void
+rte_regexdev_unregister(struct rte_regexdev *dev)
+{
+ dev->state = RTE_REGEXDEV_UNUSED;
+}
+
+struct rte_regexdev *
+rte_regexdev_get_device_by_name(const char *name)
+{
+ if (regexdev_check_name(name) < 0)
+ return NULL;
+ return regexdev_allocated(name);
+}
regexdev_dump_t dev_dump;
};
+/**
+ * Possible states of a RegEx device.
+ */
+enum rte_regexdev_state {
+ RTE_REGEXDEV_UNUSED = 0, /**< Device is unused. */
+ RTE_REGEXDEV_REGISTERED,
+ /**< Device is registered, but not ready to be used. */
+ RTE_REGEXDEV_READY,
+ /**< Device is ready for use. This is set by the PMD. */
+};
+
/**
* @internal
* The data part, with no function pointers, associated with each RegEx device.
*/
struct rte_regexdev_data {
void *dev_private; /**< PMD-specific private data. */
+ char dev_name[RTE_REGEXDEV_NAME_MAX_LEN]; /**< Unique identifier name */
+ uint16_t dev_id; /**< Device [external] identifier. */
} __rte_cache_aligned;
/**
const struct rte_regexdev_ops *dev_ops;
/**< Functions exported by PMD */
struct rte_device *device; /**< Backing device */
+ enum rte_regexdev_state state; /**< The device state. */
struct rte_regexdev_data *data; /**< Pointer to device data. */
} __rte_cache_aligned;
--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2020 Mellanox Technologies, Ltd
+ */
+
+#ifndef _RTE_REGEXDEV_DRIVER_H_
+#define _RTE_REGEXDEV_DRIVER_H_
+
+/**
+ * @file
+ *
+ * RTE RegEx Device PMD API
+ *
+ * APIs that are used by the RegEx drivers, to communicate with the
+ * RegEx lib.
+ */
+
+#include "rte_regexdev.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @internal
+ * Register a RegEx device slot for a RegEx device and return the
+ * pointer to that slot.
+ *
+ * @param name
+ * RegEx device name.
+ *
+ * @return
+ * A pointer to the RegEx device slot case of success,
+ * NULL otherwise.
+ */
+struct rte_regexdev *rte_regexdev_register(const char *name);
+
+/**
+ * @internal
+ * Unregister the specified regexdev port.
+ *
+ * @param dev
+ * Device to be released.
+ */
+void rte_regexdev_unregister(struct rte_regexdev *dev);
+
+/**
+ * @internal
+ * Return the RegEx device based on the device name.
+ *
+ * @param name
+ * The device name.
+ */
+struct rte_regexdev *rte_regexdev_get_device_by_name(const char *name);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_REGEXDEV_DRIVER_H_ */
git.droids-corp.org / dpdk.git / commitdiff