[dpdk-dev] [PATCH v7 06/15] bus: add helper to find which bus holds a device
Jan Blunck
jblunck at infradead.org
Thu Jun 29 20:21:57 CEST 2017
Signed-off-by: Jan Blunck <jblunck at infradead.org>
Signed-off-by: Gaetan Rivet <gaetan.rivet at 6wind.com>
---
lib/librte_eal/bsdapp/eal/rte_eal_version.map | 1 +
lib/librte_eal/common/eal_common_bus.c | 23 +++++++++++++++++++++++
lib/librte_eal/common/include/rte_bus.h | 5 +++++
lib/librte_eal/linuxapp/eal/rte_eal_version.map | 1 +
4 files changed, 30 insertions(+)
diff --git a/lib/librte_eal/bsdapp/eal/rte_eal_version.map b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
index ed09ab2..f1a0765 100644
--- a/lib/librte_eal/bsdapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
@@ -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;
diff --git a/lib/librte_eal/common/eal_common_bus.c b/lib/librte_eal/common/eal_common_bus.c
index 3094daa..276cce6 100644
--- a/lib/librte_eal/common/eal_common_bus.c
+++ b/lib/librte_eal/common/eal_common_bus.c
@@ -164,3 +164,26 @@ rte_bus_find(const struct rte_bus *start, rte_bus_cmp_t cmp,
}
return bus;
}
+
+static int
+cmp_rte_device(const struct rte_device *dev1, const void *_dev2)
+{
+ const struct rte_device *dev2 = _dev2;
+
+ return dev1 != dev2;
+}
+
+static int
+bus_find_device(const struct rte_bus *bus, const void *_dev)
+{
+ struct rte_device *dev;
+
+ dev = bus->find_device(NULL, cmp_rte_device, _dev);
+ return !dev;
+}
+
+struct rte_bus *
+rte_bus_find_by_device(const struct rte_device *dev)
+{
+ return rte_bus_find(NULL, bus_find_device, (const void *)dev);
+}
diff --git a/lib/librte_eal/common/include/rte_bus.h b/lib/librte_eal/common/include/rte_bus.h
index 052ac8d..f8b3215 100644
--- a/lib/librte_eal/common/include/rte_bus.h
+++ b/lib/librte_eal/common/include/rte_bus.h
@@ -210,6 +210,11 @@ struct rte_bus *rte_bus_find(const struct rte_bus *start, rte_bus_cmp_t cmp,
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.
*/
diff --git a/lib/librte_eal/linuxapp/eal/rte_eal_version.map b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
index 6efa517..6f77222 100644
--- a/lib/librte_eal/linuxapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
@@ -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;
--
2.9.4
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