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33 * version: DPDK.L.1.2.3-3
42 * EAL Configuration API
45 #include <rte_tailq.h>
46 #include <rte_memory.h>
47 #include <rte_memzone.h>
53 #define RTE_VERSION 1 /**< The version of the RTE configuration structure. */
54 #define RTE_MAGIC 19820526 /**< Magic number written by the main partition when ready. */
57 * The lcore role (used in RTE or not).
59 enum rte_lcore_role_t {
65 * The type of process in a linuxapp, multi-process setup
67 enum rte_proc_type_t {
68 RTE_PROC_AUTO = -1, /* allow auto-detection of primary/secondary */
69 RTE_PROC_PRIMARY = 0, /* set to zero, so primary is the default */
76 * the structure for the memory configuration for the RTE.
77 * Used by the rte_config structure. It is separated out, as for multi-process
78 * support, the memory details should be shared across instances
80 struct rte_mem_config {
82 uint32_t nchannel; /**< Number of channels (0 if unknown). */
83 uint32_t nrank; /**< Number of ranks (0 if unknown). */
85 /* memory segments and zones */
86 struct rte_memseg memseg[RTE_MAX_MEMSEG]; /**< Physmem descriptors. */
87 struct rte_memzone memzone[RTE_MAX_MEMZONE]; /**< Memzone descriptors. */
89 struct rte_tailq_head tailq_head[RTE_MAX_TAILQ]; /**< Tailqs for objects */
90 } __attribute__((__packed__));
93 * The global RTE configuration structure.
96 uint32_t version; /**< Configuration [structure] version. */
97 uint32_t magic; /**< Magic number - Sanity check. */
100 uint32_t master_lcore; /**< Id of the master lcore */
101 uint32_t lcore_count; /**< Number of available logical cores. */
102 enum rte_lcore_role_t lcore_role[RTE_MAX_LCORE]; /**< State of cores. */
104 /** Primary or secondary configuration */
105 enum rte_proc_type_t process_type;
108 * Pointer to memory configuration, which may be shared across multiple
109 * Intel DPDK instances
111 struct rte_mem_config *mem_config;
112 } __attribute__((__packed__));
115 * Get the global configuration structure.
118 * A pointer to the global configuration structure.
120 struct rte_config *rte_eal_get_configuration(void);
123 * Get a lcore's role.
126 * The identifier of the lcore.
128 * The role of the lcore.
130 enum rte_lcore_role_t rte_eal_lcore_role(unsigned lcore_id);
134 * Get the process type in a multi-process setup
139 enum rte_proc_type_t rte_eal_process_type(void);
142 * Initialize the Environment Abstraction Layer (EAL).
144 * This function is to be executed on the MASTER lcore only, as soon
145 * as possible in the application's main() function.
147 * The function finishes the initialization process that was started
148 * during boot (in case of baremetal) or before main() is called (in
149 * case of linuxapp). It puts the SLAVE lcores in the WAIT state.
151 * When the multi-partition feature is supported, depending on the
152 * configuration (if CONFIG_RTE_EAL_MAIN_PARTITION is disabled), this
153 * function waits to ensure that the magic number is set before
154 * returning. See also the rte_eal_get_configuration() function. Note:
155 * This behavior may change in the future.
158 * The argc argument that was given to the main() function.
160 * The argv argument that was given to the main() function.
162 * - On success, the number of parsed arguments, which is greater or
163 * equal to zero. After the call to rte_eal_init(),
164 * all arguments argv[x] with x < ret may be modified and should
165 * not be accessed by the application.
166 * - On failure, a negative error value.
168 int rte_eal_init(int argc, char **argv);
174 #endif /* _RTE_EAL_H_ */