[dpdk-dev] [PATCH v3 06/11] eal: introduce iova mode helper api

[Santosh Shukla]

Introducing rte_eal_iova_mode() helper API. This API
used by non-eal library for detecting iova mode.

Signed-off-by: Santosh Shukla <santosh.shu...@caviumnetworks.com>
---
 lib/librte_eal/bsdapp/eal/eal.c                 |  6 ++++++
 lib/librte_eal/bsdapp/eal/rte_eal_version.map   |  1 +
 lib/librte_eal/common/include/rte_eal.h         | 12 ++++++++++++
 lib/librte_eal/linuxapp/eal/eal.c               |  6 ++++++
 lib/librte_eal/linuxapp/eal/rte_eal_version.map |  1 +
 5 files changed, 26 insertions(+)

diff --git a/lib/librte_eal/bsdapp/eal/eal.c b/lib/librte_eal/bsdapp/eal/eal.c
index 05f0c1f90..e1aee8c3e 100644
--- a/lib/librte_eal/bsdapp/eal/eal.c
+++ b/lib/librte_eal/bsdapp/eal/eal.c
@@ -120,6 +120,12 @@ rte_eal_get_configuration(void)
        return &rte_config;
 }
 
+enum rte_iova_mode
+rte_eal_iova_mode(void)
+{
+       return rte_eal_get_configuration()->iova_mode;
+}
+
 /* parse a sysfs (or other) file containing one integer value */
 int
 eal_parse_sysfs_value(const char *filename, unsigned long *val)
diff --git a/lib/librte_eal/bsdapp/eal/rte_eal_version.map 
b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
index a2dd65a33..43cb11d7b 100644
--- a/lib/librte_eal/bsdapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
@@ -203,6 +203,7 @@ DPDK_17.08 {
        rte_pci_match;
        rte_pci_get_iommu_class;
        rte_bus_get_iommu_class;
+       rte_eal_iova_mode;
 
 } DPDK_17.05;
 
diff --git a/lib/librte_eal/common/include/rte_eal.h 
b/lib/librte_eal/common/include/rte_eal.h
index 6b7c5ca92..849f5f050 100644
--- a/lib/librte_eal/common/include/rte_eal.h
+++ b/lib/librte_eal/common/include/rte_eal.h
@@ -45,6 +45,7 @@
 
 #include <rte_per_lcore.h>
 #include <rte_config.h>
+#include <rte_bus.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -85,6 +86,9 @@ struct rte_config {
        /** Primary or secondary configuration */
        enum rte_proc_type_t process_type;
 
+       /** PA or VA mapping mode */
+       enum rte_iova_mode iova_mode;
+
        /**
         * Pointer to memory configuration, which may be shared across multiple
         * DPDK instances
@@ -283,6 +287,14 @@ static inline int rte_gettid(void)
        return RTE_PER_LCORE(_thread_id);
 }
 
+/**
+ * Get the iova mode
+ *
+ * @return
+ *   enum rte_iova_mode value.
+ */
+enum rte_iova_mode rte_eal_iova_mode(void);
+
 #define RTE_INIT(func) \
 static void __attribute__((constructor, used)) func(void)
 
diff --git a/lib/librte_eal/linuxapp/eal/eal.c 
b/lib/librte_eal/linuxapp/eal/eal.c
index 7c78f2dc2..2546b55e4 100644
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -129,6 +129,12 @@ rte_eal_get_configuration(void)
        return &rte_config;
 }
 
+enum rte_iova_mode
+rte_eal_iova_mode(void)
+{
+       return rte_eal_get_configuration()->iova_mode;
+}
+
 /* parse a sysfs (or other) file containing one integer value */
 int
 eal_parse_sysfs_value(const char *filename, unsigned long *val)
diff --git a/lib/librte_eal/linuxapp/eal/rte_eal_version.map 
b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
index 186c7b0fd..0de876c26 100644
--- a/lib/librte_eal/linuxapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
@@ -208,6 +208,7 @@ DPDK_17.08 {
        rte_pci_match;
        rte_pci_get_iommu_class;
        rte_bus_get_iommu_class;
+       rte_eal_iova_mode;
 
 } DPDK_17.05;
 
-- 
2.13.0