From: Jan Blunck <jblu...@infradead.org>
Signed-off-by: Jan Blunck <jblu...@infradead.org>
---
lib/librte_eal/bsdapp/eal/rte_eal_version.map | 1 +
lib/librte_eal/common/eal_common_bus.c | 26 +++++++++++++++++++++++++
lib/librte_eal/common/include/rte_bus.h | 26 +++++++++++++++++++++++++
lib/librte_eal/linuxapp/eal/rte_eal_version.map | 1 +
4 files changed, 54 insertions(+)
diff --git a/lib/librte_eal/bsdapp/eal/rte_eal_version.map
b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
index f1a0765..21640d6 100644
--- a/lib/librte_eal/bsdapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
@@ -164,6 +164,7 @@ DPDK_17.05 {
rte_bus_find;
rte_bus_find_by_device;
+ rte_bus_find_device;
rte_cpu_is_supported;
rte_log_dump;
rte_log_register;
diff --git a/lib/librte_eal/common/eal_common_bus.c
b/lib/librte_eal/common/eal_common_bus.c
index 97bcd65..b8f8384 100644
--- a/lib/librte_eal/common/eal_common_bus.c
+++ b/lib/librte_eal/common/eal_common_bus.c
@@ -182,3 +182,29 @@ struct rte_bus *rte_bus_find_by_device(const struct
rte_device *dev)
{
return rte_bus_find(bus_find_device, (const void *)dev);
}
+
+struct rte_device *
+rte_bus_find_device(const struct rte_device *start,
+ int (*match)(const struct rte_device *dev, const void *data),
+ const void *data)
+{
+ struct rte_bus *bus;
+ struct rte_device *dev = NULL;
+
+ if (start) {
+ bus = rte_bus_find_by_device(start);
+ if (!bus)
+ return NULL;
+ } else
+ bus = TAILQ_FIRST(&rte_bus_list);
+
+ while (bus) {
+ dev = bus->find_device(match, data);
+ if (dev)
+ break;
+
+ TAILQ_NEXT(bus, next);
+ }
+
+ return dev;
+}
diff --git a/lib/librte_eal/common/include/rte_bus.h
b/lib/librte_eal/common/include/rte_bus.h
index 1707a1f..3b22fb8 100644
--- a/lib/librte_eal/common/include/rte_bus.h
+++ b/lib/librte_eal/common/include/rte_bus.h
@@ -169,6 +169,32 @@ struct rte_bus *rte_bus_find(
const void *data);
/**
+ * Bus iterator to find a particular device.
+ *
+ * The callback function should return 0 if the device doesn't match and
+ * non-zero if it does. If the callback returns non-zero this function will
+ * stop iterating over any more buses and devices.
+ * To continue a search the device of a previous search is passed via the start
+ * parameters.
+ *
+ * @param start
+ * Start device of the iteration
+ *
+ * @param match
+ * Callback function to check device
+ *
+ * @param data
+ * Data to pass to match callback
+ *
+ * @return
+ * A pointer to a rte_bus structure or NULL in case no bus matches
+ */
+struct rte_device *
+rte_bus_find_device(const struct rte_device *start,
+ int (*match)(const struct rte_device *dev, const void *data),
+ const void *data);
+
+/**
* Find the registered bus for a particular device.
*/
struct rte_bus *rte_bus_find_by_device(const struct rte_device *dev);
diff --git a/lib/librte_eal/linuxapp/eal/rte_eal_version.map
b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
index 6f77222..e0a056d 100644
--- a/lib/librte_eal/linuxapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
@@ -168,6 +168,7 @@ DPDK_17.05 {
rte_bus_find;
rte_bus_find_by_device;
+ rte_bus_find_device;
rte_cpu_is_supported;
rte_intr_free_epoll_fd;
rte_log_dump;
--
2.1.4
