#include <rte_spinlock.h>
#include <rte_string_fns.h>
#include <rte_kvargs.h>
+#include <rte_class.h>
#include "rte_ether.h"
#include "rte_ethdev.h"
#include "rte_ethdev_driver.h"
#include "ethdev_profile.h"
+#include "ethdev_private.h"
int rte_eth_dev_logtype;
STAT_QMAP_RX
};
+int __rte_experimental
+rte_eth_iterator_init(struct rte_dev_iterator *iter, const char *devargs_str)
+{
+ int ret;
+ struct rte_devargs devargs = {.args = NULL};
+ const char *bus_param_key;
+ char *bus_str = NULL;
+ char *cls_str = NULL;
+ int str_size;
+
+ memset(iter, 0, sizeof(*iter));
+
+ /*
+ * The devargs string may use various syntaxes:
+ * - 0000:08:00.0,representor=[1-3]
+ * - pci:0000:06:00.0,representor=[0,5]
+ * A new syntax is in development (not yet supported):
+ * - bus=X,paramX=x/class=Y,paramY=y/driver=Z,paramZ=z
+ */
+
+ /* Split bus, device and parameters. */
+ ret = rte_devargs_parse(&devargs, devargs_str);
+ if (ret != 0)
+ goto error;
+
+ /*
+ * Assume parameters of old syntax can match only at ethdev level.
+ * Extra parameters will be ignored, thanks to "+" prefix.
+ */
+ str_size = strlen(devargs.args) + 2;
+ cls_str = malloc(str_size);
+ if (cls_str == NULL) {
+ ret = -ENOMEM;
+ goto error;
+ }
+ ret = snprintf(cls_str, str_size, "+%s", devargs.args);
+ if (ret != str_size - 1) {
+ ret = -EINVAL;
+ goto error;
+ }
+ iter->cls_str = cls_str;
+ free(devargs.args); /* allocated by rte_devargs_parse() */
+ devargs.args = NULL;
+
+ iter->bus = devargs.bus;
+ if (iter->bus->dev_iterate == NULL) {
+ ret = -ENOTSUP;
+ goto error;
+ }
+
+ /* Convert bus args to new syntax for use with new API dev_iterate. */
+ if (strcmp(iter->bus->name, "vdev") == 0) {
+ bus_param_key = "name";
+ } else if (strcmp(iter->bus->name, "pci") == 0) {
+ bus_param_key = "addr";
+ } else {
+ ret = -ENOTSUP;
+ goto error;
+ }
+ str_size = strlen(bus_param_key) + strlen(devargs.name) + 2;
+ bus_str = malloc(str_size);
+ if (bus_str == NULL) {
+ ret = -ENOMEM;
+ goto error;
+ }
+ ret = snprintf(bus_str, str_size, "%s=%s",
+ bus_param_key, devargs.name);
+ if (ret != str_size - 1) {
+ ret = -EINVAL;
+ goto error;
+ }
+ iter->bus_str = bus_str;
+
+ iter->cls = rte_class_find_by_name("eth");
+ return 0;
+
+error:
+ if (ret == -ENOTSUP)
+ RTE_LOG(ERR, EAL, "Bus %s does not support iterating.\n",
+ iter->bus->name);
+ free(devargs.args);
+ free(bus_str);
+ free(cls_str);
+ return ret;
+}
+
+uint16_t __rte_experimental
+rte_eth_iterator_next(struct rte_dev_iterator *iter)
+{
+ if (iter->cls == NULL) /* invalid ethdev iterator */
+ return RTE_MAX_ETHPORTS;
+
+ do { /* loop to try all matching rte_device */
+ /* If not in middle of rte_eth_dev iteration, */
+ if (iter->class_device == NULL) {
+ /* get next rte_device to try. */
+ iter->device = iter->bus->dev_iterate(
+ iter->device, iter->bus_str, iter);
+ if (iter->device == NULL)
+ break; /* no more rte_device candidate */
+ }
+ /* A device is matching bus part, need to check ethdev part. */
+ iter->class_device = iter->cls->dev_iterate(
+ iter->class_device, iter->cls_str, iter);
+ if (iter->class_device != NULL)
+ return eth_dev_to_id(iter->class_device); /* match */
+ } while (1); /* need to try next rte_device */
+
+ /* No more ethdev port to iterate. */
+ rte_eth_iterator_cleanup(iter);
+ return RTE_MAX_ETHPORTS;
+}
+
+void __rte_experimental
+rte_eth_iterator_cleanup(struct rte_dev_iterator *iter)
+{
+ free(RTE_CAST_FIELD(iter, bus_str, char *)); /* workaround const */
+ free(RTE_CAST_FIELD(iter, cls_str, char *)); /* workaround const */
+ memset(iter, 0, sizeof(*iter));
+}
+
uint16_t
rte_eth_find_next(uint16_t port_id)
{
struct rte_mbuf;
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Initializes a device iterator.
+ *
+ * This iterator allows accessing a list of devices matching some devargs.
+ *
+ * @param iter
+ * Device iterator handle initialized by the function.
+ * The fields bus_str and cls_str might be dynamically allocated,
+ * and could be freed by calling rte_eth_iterator_cleanup().
+ *
+ * @param devargs
+ * Device description string.
+ *
+ * @return
+ * 0 on successful initialization, negative otherwise.
+ */
+__rte_experimental
+int rte_eth_iterator_init(struct rte_dev_iterator *iter, const char *devargs);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Iterates on devices with devargs filter.
+ * The ownership is not checked.
+ *
+ * The next port id is returned, and the iterator is updated.
+ *
+ * @param iter
+ * Device iterator handle initialized by rte_eth_iterator_init().
+ * Some fields bus_str and cls_str might be freed when no more port is found,
+ * by calling rte_eth_iterator_cleanup().
+ *
+ * @return
+ * A port id if found, RTE_MAX_ETHPORTS otherwise.
+ */
+__rte_experimental
+uint16_t rte_eth_iterator_next(struct rte_dev_iterator *iter);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Free some allocated fields of the iterator.
+ *
+ * This function is automatically called by rte_eth_iterator_next()
+ * on the last iteration (i.e. when no more matching port is found).
+ *
+ * It is safe to call this function twice; it will do nothing more.
+ *
+ * @param iter
+ * Device iterator handle initialized by rte_eth_iterator_init().
+ * The fields bus_str and cls_str are freed if needed.
+ */
+__rte_experimental
+void rte_eth_iterator_cleanup(struct rte_dev_iterator *iter);
+
+/**
+ * Macro to iterate over all ethdev ports matching some devargs.
+ *
+ * If a break is done before the end of the loop,
+ * the function rte_eth_iterator_cleanup() must be called.
+ *
+ * @param id
+ * Iterated port id of type uint16_t.
+ * @param devargs
+ * Device parameters input as string of type char*.
+ * @param iter
+ * Iterator handle of type struct rte_dev_iterator, used internally.
+ */
+#define RTE_ETH_FOREACH_MATCHING_DEV(id, devargs, iter) \
+ for (rte_eth_iterator_init(iter, devargs), \
+ id = rte_eth_iterator_next(iter); \
+ id != RTE_MAX_ETHPORTS; \
+ id = rte_eth_iterator_next(iter))
+
/**
* A structure used to retrieve statistics for an Ethernet port.
* Not all statistics fields in struct rte_eth_stats are supported
git.droids-corp.org / dpdk.git / commitdiff