[dpdk-dev] [PATCH 08/14] eal/common: introduce rte_bus_addr

[Jan Viktorin <viktorin@rehivetech.com>]

To support a generic manipulation with devices we need to have a general
representation of the rte_*_addr which replaces the rte_pci_addr in the code.
Here we introduce the rte_bus_addr consisting of a union of various rte_*_addr
fields and the device magic to discriminate among them.

A wrapper around rte_eal_compare_pci_addr is introduced and it will be extended
while adding a new non-PCI infra.

Signed-off-by: Jan Viktorin <viktorin@rehivetech.com>
---
 lib/librte_eal/common/include/rte_dev.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/lib/librte_eal/common/include/rte_dev.h b/lib/librte_eal/common/include/rte_dev.h
index c99d038..48c46fd 100644
--- a/lib/librte_eal/common/include/rte_dev.h
+++ b/lib/librte_eal/common/include/rte_dev.h
@@ -161,6 +161,23 @@ union rte_device {
 	}
 
 /**
+ * Generic bus address of a device.
+ */
+struct rte_bus_addr {
+	union {
+		struct rte_pci_addr pci;
+	};
+	unsigned int dev_magic;
+};
+
+static inline int
+rte_eal_compare_bus_addr(const struct rte_bus_addr *a,
+		const struct rte_bus_addr *b)
+{
+	return rte_eal_compare_pci_addr(&a->pci, &b->pci);
+}
+
+/**
  * Register a device driver.
  *
  * @param driver
-- 
2.6.3