[dpdk-dev] [DPDK_KMODS v5] linux/igb_uio: add Makefile to build the kernel module

[Hariprasad Govindharajan]

With DPDK 20.11 release, the igb_uio module is no more part of DPDK.
There are use cases where this module is required, for example while
testing the virtual ports in OvS, the virtual ports are bound to
igb_uio module inside a VM. So, this patch provides a Makefile
which can be used to build this module and use as needed.

Since there is no more dependency on DPDK headers, this module can be
built simply by running make in the source dir

Signed-off-by: Hariprasad Govindharajan <hariprasad.govindharajan at intel.com>
---
This patch will be part of dpdk-kmods repo
https://git.dpdk.org/dpdk-kmods/
---
v5:
Removed the DPDK dependency
v4:
Corrected the indentation
v3:
Edited the commit message and corrected the mistakes in the variable
definition
v2:
Added more information to the commit message
---
 linux/igb_uio/Makefile  |  7 +++++++
 linux/igb_uio/igb_uio.c | 20 +++++++++++++++++++-
 2 files changed, 26 insertions(+), 1 deletion(-)
 create mode 100644 linux/igb_uio/Makefile

diff --git a/linux/igb_uio/Makefile b/linux/igb_uio/Makefile
new file mode 100644
index 0000000..09ae5d9
--- /dev/null
+++ b/linux/igb_uio/Makefile
@@ -0,0 +1,7 @@
+KSRC ?= /lib/modules/`uname -r`/build
+
+all:
+	make -C $(KSRC)/ M=$(PWD)
+
+clean:
+	make -C $(KSRC)/ M=$(PWD) clean
diff --git a/linux/igb_uio/igb_uio.c b/linux/igb_uio/igb_uio.c
index 039f5a5..34a605b 100644
--- a/linux/igb_uio/igb_uio.c
+++ b/linux/igb_uio/igb_uio.c
@@ -15,7 +15,25 @@
 #include <linux/version.h>
 #include <linux/slab.h>
 
-#include <rte_pci_dev_features.h>
+/**
+ * These enums and MACRO definitions are copied from the
+ * file rte_pci_dev_features.h
+ */
+
+/* interrupt mode */
+
+enum rte_intr_mode {
+    RTE_INTR_MODE_NONE = 0,
+	RTE_INTR_MODE_LEGACY,
+	RTE_INTR_MODE_MSI,
+	RTE_INTR_MODE_MSIX
+};
+
+#define RTE_INTR_MODE_NONE_NAME "none"
+#define RTE_INTR_MODE_LEGACY_NAME "legacy"
+#define RTE_INTR_MODE_MSI_NAME "msi"
+#define RTE_INTR_MODE_MSIX_NAME "msix"
+
 
 #include "compat.h"
 
-- 
2.7.4