[dpdk-dev] [PATCH 2/9] bus: add device iterator

[Gaetan Rivet]

From: Jan Blunck <jblu...@infradead.org>

Signed-off-by: Jan Blunck <jblu...@infradead.org>
---
 lib/librte_eal/common/eal_common_bus.c  | 1 +
 lib/librte_eal/common/include/rte_bus.h | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/lib/librte_eal/common/eal_common_bus.c 
b/lib/librte_eal/common/eal_common_bus.c
index 5e33129..41926fb 100644
--- a/lib/librte_eal/common/eal_common_bus.c
+++ b/lib/librte_eal/common/eal_common_bus.c
@@ -50,6 +50,7 @@ rte_bus_register(struct rte_bus *bus)
        /* A bus should mandatorily have the scan implemented */
        RTE_VERIFY(bus->scan);
        RTE_VERIFY(bus->probe);
+       RTE_VERIFY(bus->find_device);
 
        TAILQ_INSERT_TAIL(&rte_bus_list, bus, next);
        RTE_LOG(DEBUG, EAL, "Registered [%s] bus.\n", bus->name);
diff --git a/lib/librte_eal/common/include/rte_bus.h 
b/lib/librte_eal/common/include/rte_bus.h
index 66856bb..fe31f03 100644
--- a/lib/librte_eal/common/include/rte_bus.h
+++ b/lib/librte_eal/common/include/rte_bus.h
@@ -82,6 +82,13 @@ typedef int (*rte_bus_scan_t)(void);
 typedef int (*rte_bus_probe_t)(void);
 
 /**
+ * Device iterator to find a particular device on a bus.
+ */
+typedef struct rte_device * (*rte_bus_find_device_t)(
+       int (*match)(const struct rte_device *dev, const void *data),
+       const void *data);
+
+/**
  * A structure describing a generic bus.
  */
 struct rte_bus {
@@ -89,6 +96,7 @@ struct rte_bus {
        const char *name;            /**< Name of the bus */
        rte_bus_scan_t scan;         /**< Scan for devices attached to bus */
        rte_bus_probe_t probe;       /**< Probe devices on bus */
+       rte_bus_find_device_t find_device; /**< Find device on bus */
 };
 
 /**
-- 
2.1.4