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33 /* This file manages the list of devices and their arguments, as given
34 * by the user at startup
36 * Code here should not call rte_log since the EAL environment
37 * may not be initialized.
43 #include <rte_devargs.h>
44 #include "eal_private.h"
46 /** Global list of user devices */
47 struct rte_devargs_list devargs_list =
48 TAILQ_HEAD_INITIALIZER(devargs_list);
51 rte_eal_parse_devargs_str(const char *devargs_str,
52 char **drvname, char **drvargs)
56 if ((devargs_str) == NULL || (drvname) == NULL || (drvargs == NULL))
59 *drvname = strdup(devargs_str);
63 /* set the first ',' to '\0' to split name and arguments */
64 sep = strchr(*drvname, ',');
67 *drvargs = strdup(sep + 1);
69 *drvargs = strdup("");
72 if (*drvargs == NULL) {
81 bus_name_cmp(const struct rte_bus *bus, const void *name)
83 return strncmp(bus->name, name, strlen(bus->name));
87 rte_eal_devargs_parse(const char *dev, struct rte_devargs *da)
89 struct rte_bus *bus = NULL;
91 const size_t maxlen = sizeof(da->name);
94 if (dev == NULL || da == NULL)
96 /* Retrieve eventual bus info */
99 bus = rte_bus_find(bus, bus_name_cmp, dev);
102 devname = dev + strlen(bus->name) + 1;
103 if (rte_bus_find_by_device_name(devname) == bus)
106 /* Store device name */
108 while (devname[i] != '\0' && devname[i] != ',') {
109 da->name[i] = devname[i];
112 fprintf(stderr, "WARNING: Parsing \"%s\": device name should be shorter than %zu\n",
114 da->name[i - 1] = '\0';
120 bus = rte_bus_find_by_device_name(da->name);
122 fprintf(stderr, "ERROR: failed to parse device \"%s\"\n",
128 /* Parse eventual device arguments */
129 if (devname[i] == ',')
130 da->args = strdup(&devname[i + 1]);
132 da->args = strdup("");
133 if (da->args == NULL) {
134 fprintf(stderr, "ERROR: not enough memory to parse arguments\n");
140 /* store a whitelist parameter for later parsing */
142 rte_eal_devargs_add(enum rte_devtype devtype, const char *devargs_str)
144 struct rte_devargs *devargs = NULL;
145 struct rte_bus *bus = NULL;
146 const char *dev = devargs_str;
148 /* use calloc instead of rte_zmalloc as it's called early at init */
149 devargs = calloc(1, sizeof(*devargs));
153 if (rte_eal_devargs_parse(dev, devargs))
155 devargs->type = devtype;
157 if (devargs->type == RTE_DEVTYPE_WHITELISTED) {
158 if (bus->conf.scan_mode == RTE_BUS_SCAN_UNDEFINED) {
159 bus->conf.scan_mode = RTE_BUS_SCAN_WHITELIST;
160 } else if (bus->conf.scan_mode == RTE_BUS_SCAN_BLACKLIST) {
161 fprintf(stderr, "ERROR: incompatible device type and bus scan mode\n");
164 } else if (devargs->type == RTE_DEVTYPE_BLACKLISTED) {
165 if (bus->conf.scan_mode == RTE_BUS_SCAN_UNDEFINED) {
166 bus->conf.scan_mode = RTE_BUS_SCAN_BLACKLIST;
167 } else if (bus->conf.scan_mode == RTE_BUS_SCAN_WHITELIST) {
168 fprintf(stderr, "ERROR: incompatible device type and bus scan mode\n");
173 TAILQ_INSERT_TAIL(&devargs_list, devargs, next);
185 /* count the number of devices of a specified type */
187 rte_eal_devargs_type_count(enum rte_devtype devtype)
189 struct rte_devargs *devargs;
190 unsigned int count = 0;
192 TAILQ_FOREACH(devargs, &devargs_list, next) {
193 if (devargs->type != devtype)
200 /* dump the user devices on the console */
202 rte_eal_devargs_dump(FILE *f)
204 struct rte_devargs *devargs;
206 fprintf(f, "User device list:\n");
207 TAILQ_FOREACH(devargs, &devargs_list, next) {
208 fprintf(f, " [%s]: %s %s\n",
209 (devargs->bus ? devargs->bus->name : "??"),
210 devargs->name, devargs->args);