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40 * RTE PMD Driver Registration Interface
42 * This file manages the list of device drivers.
50 #include <sys/queue.h>
54 __attribute__((format(printf, 2, 0)))
56 rte_pmd_debug_trace(const char *func_name, const char *fmt, ...)
62 char buffer[vsnprintf(NULL, 0, fmt, ap) + 1];
67 vsnprintf(buffer, sizeof(buffer), fmt, ap);
70 rte_log(RTE_LOG_ERR, RTE_LOGTYPE_PMD, "%s: %s", func_name, buffer);
73 /* Macros for checking for restricting functions to primary instance only */
74 #define RTE_PROC_PRIMARY_OR_ERR_RET(retval) do { \
75 if (rte_eal_process_type() != RTE_PROC_PRIMARY) { \
76 RTE_PMD_DEBUG_TRACE("Cannot run in secondary processes\n"); \
81 #define RTE_PROC_PRIMARY_OR_RET() do { \
82 if (rte_eal_process_type() != RTE_PROC_PRIMARY) { \
83 RTE_PMD_DEBUG_TRACE("Cannot run in secondary processes\n"); \
88 /* Macros to check for invalid function pointers */
89 #define RTE_FUNC_PTR_OR_ERR_RET(func, retval) do { \
90 if ((func) == NULL) { \
91 RTE_PMD_DEBUG_TRACE("Function not supported\n"); \
96 #define RTE_FUNC_PTR_OR_RET(func) do { \
97 if ((func) == NULL) { \
98 RTE_PMD_DEBUG_TRACE("Function not supported\n"); \
104 /** Double linked list of device drivers. */
105 TAILQ_HEAD(rte_driver_list, rte_driver);
108 * Initialization function called for each device driver once.
110 typedef int (rte_dev_init_t)(const char *name, const char *args);
113 * Uninitilization function called for each device driver once.
115 typedef int (rte_dev_uninit_t)(const char *name);
118 * Driver type enumeration
126 * A structure describing a device driver.
129 TAILQ_ENTRY(rte_driver) next; /**< Next in list. */
130 enum pmd_type type; /**< PMD Driver type */
131 const char *name; /**< Driver name. */
132 rte_dev_init_t *init; /**< Device init. function. */
133 rte_dev_uninit_t *uninit; /**< Device uninit. function. */
137 * Register a device driver.
140 * A pointer to a rte_dev structure describing the driver
143 void rte_eal_driver_register(struct rte_driver *driver);
146 * Unregister a device driver.
149 * A pointer to a rte_dev structure describing the driver
150 * to be unregistered.
152 void rte_eal_driver_unregister(struct rte_driver *driver);
155 * Initalize all the registered drivers in this process
157 int rte_eal_dev_init(void);
160 * Initialize a driver specified by name.
163 * The pointer to a driver name to be initialized.
165 * The pointer to arguments used by driver initialization.
167 * 0 on success, negative on error
169 int rte_eal_vdev_init(const char *name, const char *args);
172 * Uninitalize a driver specified by name.
175 * The pointer to a driver name to be initialized.
177 * 0 on success, negative on error
179 int rte_eal_vdev_uninit(const char *name);
181 #define PMD_REGISTER_DRIVER(d)\
182 void devinitfn_ ##d(void);\
183 void __attribute__((constructor, used)) devinitfn_ ##d(void)\
185 rte_eal_driver_register(&d);\
192 #endif /* _RTE_VDEV_H_ */