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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>
56 * Type of generic device
59 RTE_DEVTYPE_WHITELISTED_PCI,
60 RTE_DEVTYPE_BLACKLISTED_PCI,
65 * Structure that stores a device given by the user with its arguments
67 * A user device is a physical or a virtual device given by the user to
68 * the DPDK application at startup through command line arguments.
70 * The structure stores the configuration of the device, its PCI
71 * identifier if it's a PCI device or the driver name if it's a virtual
76 TAILQ_ENTRY(rte_devargs) next;
77 /** Type of device. */
78 enum rte_devtype type;
80 enum rte_dev_policy policy;
81 /** Bus handle for the device. */
83 /** Name of the device. */
84 char name[RTE_DEV_NAME_MAX_LEN];
85 /** Arguments string as given by user or "" for no argument. */
89 /** user device double-linked queue type definition */
90 TAILQ_HEAD(rte_devargs_list, rte_devargs);
92 /** Global list of user devices */
93 extern struct rte_devargs_list devargs_list;
96 * Parse a devargs string.
98 * For PCI devices, the format of arguments string is "PCI_ADDR" or
99 * "PCI_ADDR,key=val,key2=val2,...". Examples: "08:00.1", "0000:5:00.0",
102 * For virtual devices, the format of arguments string is "DRIVER_NAME*"
103 * or "DRIVER_NAME*,key=val,key2=val2,...". Examples: "net_ring",
104 * "net_ring0", "net_pmdAnything,arg=0:arg2=1".
106 * The function parses the arguments string to get driver name and driver
110 * The arguments as given by the user.
112 * The pointer to the string to store parsed driver name.
114 * The pointer to the string to store parsed driver arguments.
118 * - A negative value on error
120 int rte_eal_parse_devargs_str(const char *devargs_str,
121 char **drvname, char **drvargs);
124 * Parse a device string.
126 * Verify that a bus is capable of handling the device passed
127 * in argument. Store which bus will handle the device, its name
128 * and the eventual device parameters.
131 * The device declaration string.
133 * The devargs structure holding the device information.
137 * - Negative errno on error.
140 rte_eal_devargs_parse(const char *dev,
141 struct rte_devargs *da);
144 * Insert an rte_devargs in the global list.
147 * The devargs structure to insert.
151 * - Negative on error.
154 rte_eal_devargs_insert(struct rte_devargs *da);
157 * Add a device to the user device list
159 * For PCI devices, the format of arguments string is "PCI_ADDR" or
160 * "PCI_ADDR,key=val,key2=val2,...". Examples: "08:00.1", "0000:5:00.0",
163 * For virtual devices, the format of arguments string is "DRIVER_NAME*"
164 * or "DRIVER_NAME*,key=val,key2=val2,...". Examples: "net_ring",
165 * "net_ring0", "net_pmdAnything,arg=0:arg2=1". The validity of the
166 * driver name is not checked by this function, it is done when probing
170 * The type of the device.
172 * The arguments as given by the user.
176 * - A negative value on error
178 int rte_eal_devargs_add(enum rte_devtype devtype, const char *devargs_str);
181 * Remove a device from the user device list.
182 * Its resources are freed.
183 * If the devargs cannot be found, nothing happens.
186 * bus name of the devargs to remove.
189 * device name of the devargs to remove.
194 * >0 if the devargs was not within the user device list.
196 int rte_eal_devargs_remove(const char *busname, const char *devname);
199 * Count the number of user devices of a specified type
202 * The type of the devices to counted.
205 * The number of devices.
208 rte_eal_devargs_type_count(enum rte_devtype devtype);
211 * This function dumps the list of user device and their arguments.
214 * A pointer to a file for output
216 void rte_eal_devargs_dump(FILE *f);
222 #endif /* _RTE_DEVARGS_H_ */