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33 #ifndef _RTE_DEVARGS_H_
34 #define _RTE_DEVARGS_H_
39 * RTE devargs: list of devices and their user arguments
41 * This file stores a list of devices and their arguments given by
42 * the user when a DPDK application is started. These devices can be PCI
43 * devices or virtual devices. These devices are stored at startup in a
44 * list of rte_devargs structures.
52 #include <sys/queue.h>
57 * Type of generic device
60 RTE_DEVTYPE_WHITELISTED_PCI,
61 RTE_DEVTYPE_BLACKLISTED_PCI,
66 * Structure that stores a device given by the user with its arguments
68 * A user device is a physical or a virtual device given by the user to
69 * the DPDK application at startup through command line arguments.
71 * The structure stores the configuration of the device, its PCI
72 * identifier if it's a PCI device or the driver name if it's a virtual
77 TAILQ_ENTRY(rte_devargs) next;
78 /** Type of device. */
79 enum rte_devtype type;
82 /** Used if type is RTE_DEVTYPE_*_PCI. */
85 struct rte_pci_addr addr;
87 /** Used if type is RTE_DEVTYPE_VIRTUAL. */
90 char drv_name[RTE_DEV_NAME_MAX_LEN];
93 /** Bus handle for the device. */
95 /** Arguments string as given by user or "" for no argument. */
99 /** user device double-linked queue type definition */
100 TAILQ_HEAD(rte_devargs_list, rte_devargs);
102 /** Global list of user devices */
103 extern struct rte_devargs_list devargs_list;
106 * Parse a devargs string.
108 * For PCI devices, the format of arguments string is "PCI_ADDR" or
109 * "PCI_ADDR,key=val,key2=val2,...". Examples: "08:00.1", "0000:5:00.0",
112 * For virtual devices, the format of arguments string is "DRIVER_NAME*"
113 * or "DRIVER_NAME*,key=val,key2=val2,...". Examples: "net_ring",
114 * "net_ring0", "net_pmdAnything,arg=0:arg2=1".
116 * The function parses the arguments string to get driver name and driver
120 * The arguments as given by the user.
122 * The pointer to the string to store parsed driver name.
124 * The pointer to the string to store parsed driver arguments.
128 * - A negative value on error
130 int rte_eal_parse_devargs_str(const char *devargs_str,
131 char **drvname, char **drvargs);
134 * Add a device to the user device list
136 * For PCI devices, the format of arguments string is "PCI_ADDR" or
137 * "PCI_ADDR,key=val,key2=val2,...". Examples: "08:00.1", "0000:5:00.0",
140 * For virtual devices, the format of arguments string is "DRIVER_NAME*"
141 * or "DRIVER_NAME*,key=val,key2=val2,...". Examples: "net_ring",
142 * "net_ring0", "net_pmdAnything,arg=0:arg2=1". The validity of the
143 * driver name is not checked by this function, it is done when probing
147 * The type of the device.
149 * The arguments as given by the user.
153 * - A negative value on error
155 int rte_eal_devargs_add(enum rte_devtype devtype, const char *devargs_str);
158 * Count the number of user devices of a specified type
161 * The type of the devices to counted.
164 * The number of devices.
167 rte_eal_devargs_type_count(enum rte_devtype devtype);
170 * This function dumps the list of user device and their arguments.
173 * A pointer to a file for output
175 void rte_eal_devargs_dump(FILE *f);
181 #endif /* _RTE_DEVARGS_H_ */