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40 * API for lcore and socket manipulation
43 #include <rte_per_lcore.h>
45 #include <rte_launch.h>
51 #define LCORE_ID_ANY -1 /**< Any lcore. */
54 * Structure storing internal configuration (per-lcore)
57 unsigned detected; /**< true if lcore was detected */
58 pthread_t thread_id; /**< pthread identifier */
59 int pipe_master2slave[2]; /**< communication pipe with master */
60 int pipe_slave2master[2]; /**< communication pipe with master */
61 lcore_function_t * volatile f; /**< function to call */
62 void * volatile arg; /**< argument of function */
63 volatile int ret; /**< return value of function */
64 volatile enum rte_lcore_state_t state; /**< lcore state */
65 unsigned socket_id; /**< physical socket id for this lcore */
66 unsigned core_id; /**< core number on socket for this lcore */
70 * Internal configuration (per-lcore)
72 extern struct lcore_config lcore_config[RTE_MAX_LCORE];
74 RTE_DECLARE_PER_LCORE(unsigned, _lcore_id); /**< Per core "core id". */
77 * Return the ID of the execution unit we are running on.
81 static inline unsigned
84 return RTE_PER_LCORE(_lcore_id);
88 * Get the id of the master lcore
91 * the id of the master lcore
93 static inline unsigned
94 rte_get_master_lcore(void)
96 return rte_eal_get_configuration()->master_lcore;
100 * Return the number of execution units (lcores) on the system.
103 * the number of execution units (lcores) on the system.
105 static inline unsigned
106 rte_lcore_count(void)
108 const struct rte_config *cfg = rte_eal_get_configuration();
109 return cfg->lcore_count;
113 * Return the ID of the physical socket of the logical core we are
116 * the ID of current lcoreid's physical socket
118 static inline unsigned
121 return lcore_config[rte_lcore_id()].socket_id;
125 * Get the ID of the physical socket of the specified lcore
128 * the targeted lcore, which MUST be between 0 and RTE_MAX_LCORE-1.
130 * the ID of lcoreid's physical socket
132 static inline unsigned
133 rte_lcore_to_socket_id(unsigned lcore_id)
135 return lcore_config[lcore_id].socket_id;
139 * Test if an lcore is enabled.
142 * The identifier of the lcore, which MUST be between 0 and
145 * True if the given lcore is enabled; false otherwise.
148 rte_lcore_is_enabled(unsigned lcore_id)
150 struct rte_config *cfg = rte_eal_get_configuration();
151 if (lcore_id >= RTE_MAX_LCORE)
153 return (cfg->lcore_role[lcore_id] != ROLE_OFF);
157 * Get the next enabled lcore ID.
160 * The current lcore (reference).
162 * If true, do not return the ID of the master lcore.
164 * If true, go back to 0 when RTE_MAX_LCORE is reached; otherwise,
165 * return RTE_MAX_LCORE.
167 * The next lcore_id or RTE_MAX_LCORE if not found.
169 static inline unsigned
170 rte_get_next_lcore(unsigned i, int skip_master, int wrap)
176 while (i < RTE_MAX_LCORE) {
177 if (!rte_lcore_is_enabled(i) ||
178 (skip_master && (i == rte_get_master_lcore()))) {
189 * Macro to browse all running lcores.
191 #define RTE_LCORE_FOREACH(i) \
192 for (i = rte_get_next_lcore(-1, 0, 0); \
194 i = rte_get_next_lcore(i, 0, 0))
197 * Macro to browse all running lcores except the master lcore.
199 #define RTE_LCORE_FOREACH_SLAVE(i) \
200 for (i = rte_get_next_lcore(-1, 1, 0); \
202 i = rte_get_next_lcore(i, 1, 0))
209 #endif /* _RTE_LCORE_H_ */