From: Jan Blunck <jblu...@infradead.org>
Signed-off-by: Jan Blunck <jblu...@infradead.org>
Signed-off-by: Gaetan Rivet <gaetan.ri...@6wind.com>
---
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 | 26 +++++++++++++++++++++++++
lib/librte_eal/linuxapp/eal/rte_eal_version.map | 1 +
4 files changed, 52 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 d208214..63fd9f1 100644
--- a/lib/librte_eal/common/eal_common_bus.c
+++ b/lib/librte_eal/common/eal_common_bus.c
@@ -190,3 +190,27 @@ rte_bus_find_by_device(const struct rte_device *dev)
{
return rte_bus_find(bus_find_device, (const void *)dev, NULL);
}
+
+struct rte_device *
+rte_bus_find_device(rte_dev_cmp_t cmp, const void *data,
+ const struct rte_device *start)
+{
+ struct rte_bus *bus;
+ struct rte_device *dev = NULL;
+ int started = start == NULL;
+
+ TAILQ_FOREACH(bus, &rte_bus_list, next) {
+ if (!bus->find_device)
+ continue;
+ if (!started) {
+ dev = bus->find_device(cmp_rte_device, start);
+ if (dev)
+ started = 1;
+ continue;
+ }
+ dev = bus->find_device(cmp, data);
+ if (dev)
+ break;
+ }
+ return dev;
+}
diff --git a/lib/librte_eal/common/include/rte_bus.h
b/lib/librte_eal/common/include/rte_bus.h
index 5441af9..3e83227 100644
--- a/lib/librte_eal/common/include/rte_bus.h
+++ b/lib/librte_eal/common/include/rte_bus.h
@@ -203,6 +203,32 @@ struct rte_bus *rte_bus_find(rte_bus_cmp_t cmp,
const struct rte_bus *start);
/**
+ * Bus iterator to find a particular device.
+ *
+ * This function searches each registered bus to find a device that matches
+ * the data passed as parameter.
+ *
+ * If the comparison function returns zero this function will stop iterating
+ * over any more buses and devices. To continue a search the device of
+ * a previous search can be passed via the start parameter.
+ *
+ * @param cmp
+ * Comparison function.
+ *
+ * @param data
+ * Data to pass to comparison function.
+ *
+ * @param start
+ * Starting point for the iteration.
+ *
+ * @return
+ * A pointer to an rte_bus structure or NULL in case no device matches.
+ */
+struct rte_device *rte_bus_find_device(rte_dev_cmp_t cmp,
+ const void *data,
+ const struct rte_device *start);
+
+/**
* 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
