-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2018 Intel Corporation
*/
#ifndef _RTE_EAL_H_
*/
#include <stdint.h>
+#include <sched.h>
+#include <time.h>
+
+#include <rte_config.h>
+#include <rte_compat.h>
+#include <rte_per_lcore.h>
+#include <rte_bus.h>
+
+#include <rte_pci_dev_feature_defs.h>
#ifdef __cplusplus
extern "C" {
#define RTE_MAGIC 19820526 /**< Magic number written by the main partition when ready. */
+/* Maximum thread_name length. */
+#define RTE_MAX_THREAD_NAME_LEN 16
+
/**
* The lcore role (used in RTE or not).
*/
enum rte_lcore_role_t {
ROLE_RTE,
ROLE_OFF,
+ ROLE_SERVICE,
};
/**
- * The type of process in a linuxapp, multi-process setup
+ * The type of process in a linux, multi-process setup
*/
enum rte_proc_type_t {
RTE_PROC_AUTO = -1, /* allow auto-detection of primary/secondary */
};
/**
- * The global RTE configuration structure.
- */
-struct rte_config {
- uint32_t master_lcore; /**< Id of the master lcore */
- uint32_t lcore_count; /**< Number of available logical cores. */
- enum rte_lcore_role_t lcore_role[RTE_MAX_LCORE]; /**< State of cores. */
-
- /** Primary or secondary configuration */
- enum rte_proc_type_t process_type;
-
- /** A set of general status flags */
- unsigned flags;
-
- /**
- * Pointer to memory configuration, which may be shared across multiple
- * Intel DPDK instances
- */
- struct rte_mem_config *mem_config;
-} __attribute__((__packed__));
-
-/* Flag definitions for rte_config flags */
-#define EAL_FLG_HIGH_IOPL 1 /**< indicates high IO privilege in a linux env */
-
-/**
- * Get the global configuration structure.
+ * Get the process type in a multi-process setup
*
* @return
- * A pointer to the global configuration structure.
+ * The process type
*/
-struct rte_config *rte_eal_get_configuration(void);
+enum rte_proc_type_t rte_eal_process_type(void);
/**
- * Get a lcore's role.
+ * Request iopl privilege for all RPL.
*
- * @param lcore_id
- * The identifier of the lcore.
- * @return
- * The role of the lcore.
- */
-enum rte_lcore_role_t rte_eal_lcore_role(unsigned lcore_id);
+ * This function should be called by pmds which need access to ioports.
-
-/**
- * Get the process type in a multi-process setup
- *
* @return
- * The process type
+ * - On success, returns 0.
+ * - On failure, returns -1.
*/
-enum rte_proc_type_t rte_eal_process_type(void);
+int rte_eal_iopl_init(void);
/**
* Initialize the Environment Abstraction Layer (EAL).
* This function is to be executed on the MASTER lcore only, as soon
* as possible in the application's main() function.
*
- * The function finishes the initialization process that was started
- * during boot (in case of baremetal) or before main() is called (in
- * case of linuxapp). It puts the SLAVE lcores in the WAIT state.
+ * The function finishes the initialization process before main() is called.
+ * It puts the SLAVE lcores in the WAIT state.
*
* When the multi-partition feature is supported, depending on the
* configuration (if CONFIG_RTE_EAL_MAIN_PARTITION is disabled), this
* This behavior may change in the future.
*
* @param argc
- * The argc argument that was given to the main() function.
+ * A non-negative value. If it is greater than 0, the array members
+ * for argv[0] through argv[argc] (non-inclusive) shall contain pointers
+ * to strings.
* @param argv
- * The argv argument that was given to the main() function.
+ * An array of strings. The contents of the array, as well as the strings
+ * which are pointed to by the array, may be modified by this function.
* @return
* - On success, the number of parsed arguments, which is greater or
* equal to zero. After the call to rte_eal_init(),
- * all arguments argv[x] with x < ret may be modified and should
- * not be accessed by the application.
- * - On failure, a negative error value.
+ * all arguments argv[x] with x < ret may have been modified by this
+ * function call and should not be further interpreted by the
+ * application. The EAL does not take any ownership of the memory used
+ * for either the argv array, or its members.
+ * - On failure, -1 and rte_errno is set to a value indicating the cause
+ * for failure. In some instances, the application will need to be
+ * restarted as part of clearing the issue.
+ *
+ * Error codes returned via rte_errno:
+ * EACCES indicates a permissions issue.
+ *
+ * EAGAIN indicates either a bus or system resource was not available,
+ * setup may be attempted again.
+ *
+ * EALREADY indicates that the rte_eal_init function has already been
+ * called, and cannot be called again.
+ *
+ * EFAULT indicates the tailq configuration name was not found in
+ * memory configuration.
+ *
+ * EINVAL indicates invalid parameters were passed as argv/argc.
+ *
+ * ENOMEM indicates failure likely caused by an out-of-memory condition.
+ *
+ * ENODEV indicates memory setup issues.
+ *
+ * ENOTSUP indicates that the EAL cannot initialize on this system.
+ *
+ * EPROTO indicates that the PCI bus is either not present, or is not
+ * readable by the eal.
+ *
+ * ENOEXEC indicates that a service core failed to launch successfully.
*/
int rte_eal_init(int argc, char **argv);
+
+/**
+ * Clean up the Environment Abstraction Layer (EAL)
+ *
+ * This function must be called to release any internal resources that EAL has
+ * allocated during rte_eal_init(). After this call, no DPDK function calls may
+ * be made. It is expected that common usage of this function is to call it
+ * just before terminating the process.
+ *
+ * @return 0 Successfully released all internal EAL resources
+ * @return -EFAULT There was an error in releasing all resources.
+ */
+int rte_eal_cleanup(void);
+
+/**
+ * Check if a primary process is currently alive
+ *
+ * This function returns true when a primary process is currently
+ * active.
+ *
+ * @param config_file_path
+ * The config_file_path argument provided should point at the location
+ * that the primary process will create its config file. If NULL, the default
+ * config file path is used.
+ *
+ * @return
+ * - If alive, returns 1.
+ * - If dead, returns 0.
+ */
+int rte_eal_primary_proc_alive(const char *config_file_path);
+
+#define RTE_MP_MAX_FD_NUM 8 /* The max amount of fds */
+#define RTE_MP_MAX_NAME_LEN 64 /* The max length of action name */
+#define RTE_MP_MAX_PARAM_LEN 256 /* The max length of param */
+struct rte_mp_msg {
+ char name[RTE_MP_MAX_NAME_LEN];
+ int len_param;
+ int num_fds;
+ uint8_t param[RTE_MP_MAX_PARAM_LEN];
+ int fds[RTE_MP_MAX_FD_NUM];
+};
+
+struct rte_mp_reply {
+ int nb_sent;
+ int nb_received;
+ struct rte_mp_msg *msgs; /* caller to free */
+};
+
+/**
+ * Action function typedef used by other components.
+ *
+ * As we create socket channel for primary/secondary communication, use
+ * this function typedef to register action for coming messages.
+ *
+ * @note When handling IPC request callbacks, the reply must be sent even in
+ * cases of error handling. Simply returning success or failure will *not*
+ * send a response to the requestor.
+ * Implementation of error signalling mechanism is up to the application.
+ *
+ * @note No memory allocations should take place inside the callback.
+ */
+typedef int (*rte_mp_t)(const struct rte_mp_msg *msg, const void *peer);
+
+/**
+ * Asynchronous reply function typedef used by other components.
+ *
+ * As we create socket channel for primary/secondary communication, use
+ * this function typedef to register action for coming responses to asynchronous
+ * requests.
+ *
+ * @note When handling IPC request callbacks, the reply must be sent even in
+ * cases of error handling. Simply returning success or failure will *not*
+ * send a response to the requestor.
+ * Implementation of error signalling mechanism is up to the application.
+ *
+ * @note No memory allocations should take place inside the callback.
+ */
+typedef int (*rte_mp_async_reply_t)(const struct rte_mp_msg *request,
+ const struct rte_mp_reply *reply);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Register an action function for primary/secondary communication.
+ *
+ * Call this function to register an action, if the calling component wants
+ * to response the messages from the corresponding component in its primary
+ * process or secondary processes.
+ *
+ * @note IPC may be unsupported in certain circumstances, so caller should check
+ * for ENOTSUP error.
+ *
+ * @param name
+ * The name argument plays as the nonredundant key to find the action.
+ *
+ * @param action
+ * The action argument is the function pointer to the action function.
+ *
+ * @return
+ * - 0 on success.
+ * - (<0) on failure.
+ */
+__rte_experimental
+int
+rte_mp_action_register(const char *name, rte_mp_t action);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Unregister an action function for primary/secondary communication.
+ *
+ * Call this function to unregister an action if the calling component does
+ * not want to response the messages from the corresponding component in its
+ * primary process or secondary processes.
+ *
+ * @note IPC may be unsupported in certain circumstances, so caller should check
+ * for ENOTSUP error.
+ *
+ * @param name
+ * The name argument plays as the nonredundant key to find the action.
+ *
+ */
+__rte_experimental
+void
+rte_mp_action_unregister(const char *name);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Send a message to the peer process.
+ *
+ * This function will send a message which will be responded by the action
+ * identified by name in the peer process.
+ *
+ * @param msg
+ * The msg argument contains the customized message.
+ *
+ * @return
+ * - On success, return 0.
+ * - On failure, return -1, and the reason will be stored in rte_errno.
+ */
+__rte_experimental
+int
+rte_mp_sendmsg(struct rte_mp_msg *msg);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Send a request to the peer process and expect a reply.
+ *
+ * This function sends a request message to the peer process, and will
+ * block until receiving reply message from the peer process.
+ *
+ * @note The caller is responsible to free reply->replies.
+ *
+ * @note This API must not be used inside memory-related or IPC callbacks, and
+ * no memory allocations should take place inside such callback.
+ *
+ * @note IPC may be unsupported in certain circumstances, so caller should check
+ * for ENOTSUP error.
+ *
+ * @param req
+ * The req argument contains the customized request message.
+ *
+ * @param reply
+ * The reply argument will be for storing all the replied messages;
+ * the caller is responsible for free reply->msgs.
+ *
+ * @param ts
+ * The ts argument specifies how long we can wait for the peer(s) to reply.
+ *
+ * @return
+ * - On success, return 0.
+ * - On failure, return -1, and the reason will be stored in rte_errno.
+ */
+__rte_experimental
+int
+rte_mp_request_sync(struct rte_mp_msg *req, struct rte_mp_reply *reply,
+ const struct timespec *ts);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Send a request to the peer process and expect a reply in a separate callback.
+ *
+ * This function sends a request message to the peer process, and will not
+ * block. Instead, reply will be received in a separate callback.
+ *
+ * @note IPC may be unsupported in certain circumstances, so caller should check
+ * for ENOTSUP error.
+ *
+ * @param req
+ * The req argument contains the customized request message.
+ *
+ * @param ts
+ * The ts argument specifies how long we can wait for the peer(s) to reply.
+ *
+ * @param clb
+ * The callback to trigger when all responses for this request have arrived.
+ *
+ * @return
+ * - On success, return 0.
+ * - On failure, return -1, and the reason will be stored in rte_errno.
+ */
+__rte_experimental
+int
+rte_mp_request_async(struct rte_mp_msg *req, const struct timespec *ts,
+ rte_mp_async_reply_t clb);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Send a reply to the peer process.
+ *
+ * This function will send a reply message in response to a request message
+ * received previously.
+ *
+ * @note When handling IPC request callbacks, the reply must be sent even in
+ * cases of error handling. Simply returning success or failure will *not*
+ * send a response to the requestor.
+ * Implementation of error signalling mechanism is up to the application.
+ *
+ * @param msg
+ * The msg argument contains the customized message.
+ *
+ * @param peer
+ * The peer argument is the pointer to the peer socket path.
+ *
+ * @return
+ * - On success, return 0.
+ * - On failure, return -1, and the reason will be stored in rte_errno.
+ */
+__rte_experimental
+int
+rte_mp_reply(struct rte_mp_msg *msg, const char *peer);
+
/**
* Usage function typedef used by the application usage function.
*
- * Use this function typedef to define and call rte_set_applcation_usage_hook()
+ * Use this function typedef to define and call rte_set_application_usage_hook()
* routine.
*/
typedef void (*rte_usage_hook_t)(const char * prgname);
* This routine is optional for the application and will behave as if the set
* routine was never called as the default behavior.
*
- * @param func
+ * @param usage_func
* The func argument is a function pointer to the application usage routine.
* Called function is defined using rte_usage_hook_t typedef, which is of
* the form void rte_usage_func(const char * prgname).
* the caller to daisy chain the usage routines if needing more then one.
*/
rte_usage_hook_t
-rte_set_application_usage_hook( rte_usage_hook_t usage_func );
+rte_set_application_usage_hook(rte_usage_hook_t usage_func);
/**
- * macro to get the lock of tailq in mem_config
+ * Whether EAL is using huge pages (disabled by --no-huge option).
+ * The no-huge mode is not compatible with all drivers or features.
+ *
+ * @return
+ * Nonzero if hugepages are enabled.
*/
-#define RTE_EAL_TAILQ_RWLOCK (&rte_eal_get_configuration()->mem_config->qlock)
+int rte_eal_has_hugepages(void);
/**
- * macro to get the multiple lock of mempool shared by mutiple-instance
+ * Whether EAL is using PCI bus.
+ * Disabled by --no-pci option.
+ *
+ * @return
+ * Nonzero if the PCI bus is enabled.
*/
-#define RTE_EAL_MEMPOOL_RWLOCK (&rte_eal_get_configuration()->mem_config->mplock)
-
+int rte_eal_has_pci(void);
/**
- * Utility macro to do a thread-safe tailq 'INSERT' of rte_mem_config
- *
- * @param idx
- * a kind of tailq define in enum rte_tailq_t
- *
- * @param type
- * type of list(tailq head)
- *
- * @param elm
- * The element will be added into the list
+ * Whether the EAL was asked to create UIO device.
*
+ * @return
+ * Nonzero if true.
*/
-#define RTE_EAL_TAILQ_INSERT_TAIL(idx, type, elm) do { \
- struct type *list; \
- list = RTE_TAILQ_LOOKUP_BY_IDX(idx, type); \
- rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK); \
- TAILQ_INSERT_TAIL(list, elm, next); \
- rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK); \
-} while (0)
+int rte_eal_create_uio_dev(void);
/**
- * Utility macro to do a thread-safe tailq 'REMOVE' of rte_mem_config
- *
- * @param idx
- * a kind of tailq define in enum rte_tailq_t
+ * The user-configured vfio interrupt mode.
*
- * @param type
- * type of list(tailq head)
- *
- * @param elm
- * The element will be remove from the list
+ * @return
+ * Interrupt mode configured with the command line,
+ * RTE_INTR_MODE_NONE by default.
+ */
+enum rte_intr_mode rte_eal_vfio_intr_mode(void);
+
+/**
+ * A wrap API for syscall gettid.
*
+ * @return
+ * On success, returns the thread ID of calling process.
+ * It is always successful.
*/
-#define RTE_EAL_TAILQ_REMOVE(idx, type, elm) do { \
- struct type *list; \
- list = RTE_TAILQ_LOOKUP_BY_IDX(idx, type); \
- rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK); \
- TAILQ_REMOVE(list, elm, next); \
- rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK); \
-} while (0) \
+int rte_sys_gettid(void);
+/**
+ * Get system unique thread id.
+ *
+ * @return
+ * On success, returns the thread ID of calling process.
+ * It is always successful.
+ */
+static inline int rte_gettid(void)
+{
+ static RTE_DEFINE_PER_LCORE(int, _thread_id) = -1;
+ if (RTE_PER_LCORE(_thread_id) == -1)
+ RTE_PER_LCORE(_thread_id) = rte_sys_gettid();
+ return RTE_PER_LCORE(_thread_id);
+}
/**
- * macro to check TAILQ exist
+ * Get the iova mode
*
- * @param idx
- * a kind of tailq define in enum rte_tailq_t
+ * @return
+ * enum rte_iova_mode value.
+ */
+enum rte_iova_mode rte_eal_iova_mode(void);
+
+/**
+ * Get user provided pool ops name for mbuf
*
+ * @return
+ * returns user provided pool ops name.
*/
-#define RTE_EAL_TAILQ_EXIST_CHECK(idx) do { \
- if (RTE_TAILQ_LOOKUP_BY_IDX(idx, rte_tailq_head) == NULL){ \
- rte_errno = E_RTE_NO_TAILQ; \
- return NULL; \
- } \
-} while(0)
+const char *
+rte_eal_mbuf_user_pool_ops(void);
/**
- * Whether EAL is using huge pages (disabled by --no-huge option).
- * The no-huge mode cannot be used with UIO poll-mode drivers like igb/ixgbe.
- * It is useful for NIC drivers (e.g. librte_pmd_mlx4, librte_pmd_vmxnet3) or
- * crypto drivers (e.g. librte_crypto_nitrox) provided by third-parties such
- * as 6WIND.
+ * Get the runtime directory of DPDK
*
* @return
- * Nonzero if hugepages are enabled.
+ * The runtime directory path of DPDK
*/
-int rte_eal_has_hugepages(void);
+const char *
+rte_eal_get_runtime_dir(void);
#ifdef __cplusplus
}
git.droids-corp.org / dpdk.git / blobdiff