[dpdk-dev,v2,03/11] bus: add helper to find bus for a particular device
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Commit Message
From: Jan Blunck <jblunck@infradead.org>
Signed-off-by: Jan Blunck <jblunck@infradead.org>
---
lib/librte_eal/bsdapp/eal/rte_eal_version.map | 1 +
lib/librte_eal/common/eal_common_bus.c | 24 ++++++++++++++++++++++++
lib/librte_eal/common/include/rte_bus.h | 5 +++++
lib/librte_eal/linuxapp/eal/rte_eal_version.map | 1 +
4 files changed, 31 insertions(+)
@@ -163,6 +163,7 @@ DPDK_17.05 {
global:
rte_bus_find;
+ rte_bus_find_by_device;
rte_cpu_is_supported;
rte_log_dump;
rte_log_register;
@@ -158,3 +158,27 @@ rte_bus_find(rte_bus_match_t match, const void *data)
return bus;
}
+
+static int
+cmp_rte_device(const struct rte_device *dev, const void *_dev2)
+{
+ const struct rte_device *dev2 = _dev2;
+
+ return dev == dev2;
+}
+
+static int
+bus_find_device(const struct rte_bus *bus, const void *_dev)
+{
+ struct rte_device *dev;
+
+ if (!bus->find_device)
+ return 0;
+ dev = bus->find_device(cmp_rte_device, _dev);
+ return !!dev;
+}
+
+struct rte_bus *rte_bus_find_by_device(const struct rte_device *dev)
+{
+ return rte_bus_find(bus_find_device, (const void *)dev);
+}
@@ -180,6 +180,11 @@ typedef int (*rte_bus_match_t)(const struct rte_bus *bus, const void *data);
struct rte_bus *rte_bus_find(rte_bus_match_t match, const void *data);
/**
+ * Find the registered bus for a particular device.
+ */
+struct rte_bus *rte_bus_find_by_device(const struct rte_device *dev);
+
+/**
* Helper for Bus registration.
* The constructor has higher priority than PMD constructors.
*/
@@ -167,6 +167,7 @@ DPDK_17.05 {
global:
rte_bus_find;
+ rte_bus_find_by_device;
rte_cpu_is_supported;
rte_intr_free_epoll_fd;
rte_log_dump;