patch 'eal: add missing C++ guards' has been queued to stable release 21.11.1

[Kevin Traynor <ktraynor@redhat.com>]

Hi,

FYI, your patch has been queued to stable release 21.11.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 03/06/22. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/kevintraynor/dpdk-stable

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable/commit/b2f85a808aef62fee67300f7b37307f92183dc0c

Thanks.

Kevin

---
From b2f85a808aef62fee67300f7b37307f92183dc0c Mon Sep 17 00:00:00 2001
From: Brian Dooley <brian.dooley@intel.com>
Date: Wed, 16 Feb 2022 15:14:46 +0000
Subject: [PATCH] eal: add missing C++ guards

[ upstream commit d7e9c02ccad8928b6b804049ced9a3ce6172d81e ]

Some public header files were missing 'extern "C"' C++ guards,
and couldn't be used by C++ applications. Add the missing guards.

Fixes: af75078fece3 ("first public release")
Fixes: 7f3aa0863903 ("eal: introduce bit operations API")
Fixes: 166a743c53fa ("compat: add infrastructure to support symbol versioning")
Fixes: 8f40ee0734c8 ("eal/x86: get hypervisor name")
Fixes: 75583b0d1efd ("eal: add keep alive monitoring")
Fixes: 88701645c98c ("eal: move interrupt type out of igb_uio")
Fixes: f04519d8092e ("lib: add missing include dependencies")
Fixes: f58880682c81 ("trace: implement register API")
Fixes: 428eb983f5f7 ("eal: add OS specific header file")

Signed-off-by: Brian Dooley <brian.dooley@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
---
 lib/eal/include/rte_bitops.h               | 8 ++++++++
 lib/eal/include/rte_branch_prediction.h    | 8 ++++++++
 lib/eal/include/rte_compat.h               | 8 ++++++++
 lib/eal/include/rte_hypervisor.h           | 8 ++++++++
 lib/eal/include/rte_keepalive.h            | 8 ++++++++
 lib/eal/include/rte_pci_dev_feature_defs.h | 8 ++++++++
 lib/eal/include/rte_pci_dev_features.h     | 8 ++++++++
 lib/eal/include/rte_time.h                 | 8 ++++++++
 lib/eal/include/rte_trace_point_register.h | 8 ++++++++
 lib/eal/linux/include/rte_os.h             | 8 ++++++++
 10 files changed, 80 insertions(+)

diff --git a/lib/eal/include/rte_bitops.h b/lib/eal/include/rte_bitops.h
index 141e8ea730..f50dbe4388 100644
--- a/lib/eal/include/rte_bitops.h
+++ b/lib/eal/include/rte_bitops.h
@@ -18,4 +18,8 @@
 #include <rte_compat.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /**
  * Get the uint64_t value for a specified bit set.
@@ -272,3 +276,7 @@ rte_bit_relaxed_test_and_clear64(unsigned int nr, volatile uint64_t *addr)
 }
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _RTE_BITOPS_H_ */
diff --git a/lib/eal/include/rte_branch_prediction.h b/lib/eal/include/rte_branch_prediction.h
index 854ef9e5dd..0256a9de60 100644
--- a/lib/eal/include/rte_branch_prediction.h
+++ b/lib/eal/include/rte_branch_prediction.h
@@ -11,4 +11,8 @@
 #define _RTE_BRANCH_PREDICTION_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /**
  * Check if a branch is likely to be taken.
@@ -39,3 +43,7 @@
 #endif /* unlikely */
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _RTE_BRANCH_PREDICTION_H_ */
diff --git a/lib/eal/include/rte_compat.h b/lib/eal/include/rte_compat.h
index 2718612cce..a7dbe23449 100644
--- a/lib/eal/include/rte_compat.h
+++ b/lib/eal/include/rte_compat.h
@@ -7,4 +7,8 @@
 #define _RTE_COMPAT_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #ifndef ALLOW_EXPERIMENTAL_API
 
@@ -44,3 +48,7 @@ __attribute__((section(".text.internal")))
 #endif
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _RTE_COMPAT_H_ */
diff --git a/lib/eal/include/rte_hypervisor.h b/lib/eal/include/rte_hypervisor.h
index 5fe719c1d4..1666431ce3 100644
--- a/lib/eal/include/rte_hypervisor.h
+++ b/lib/eal/include/rte_hypervisor.h
@@ -6,4 +6,8 @@
 #define RTE_HYPERVISOR_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /**
  * @file
@@ -31,3 +35,7 @@ const char *
 rte_hypervisor_get_name(enum rte_hypervisor id);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* RTE_HYPERVISOR_H */
diff --git a/lib/eal/include/rte_keepalive.h b/lib/eal/include/rte_keepalive.h
index bd25508da8..538fb09095 100644
--- a/lib/eal/include/rte_keepalive.h
+++ b/lib/eal/include/rte_keepalive.h
@@ -12,4 +12,8 @@
 #define _KEEPALIVE_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <rte_config.h>
 #include <rte_memory.h>
@@ -140,3 +144,7 @@ rte_keepalive_register_relay_callback(struct rte_keepalive *keepcfg,
 	void *data);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _KEEPALIVE_H_ */
diff --git a/lib/eal/include/rte_pci_dev_feature_defs.h b/lib/eal/include/rte_pci_dev_feature_defs.h
index e12c22081f..c5bb631286 100644
--- a/lib/eal/include/rte_pci_dev_feature_defs.h
+++ b/lib/eal/include/rte_pci_dev_feature_defs.h
@@ -6,4 +6,8 @@
 #define _RTE_PCI_DEV_DEFS_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* interrupt mode */
 enum rte_intr_mode {
@@ -14,3 +18,7 @@ enum rte_intr_mode {
 };
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _RTE_PCI_DEV_DEFS_H_ */
diff --git a/lib/eal/include/rte_pci_dev_features.h b/lib/eal/include/rte_pci_dev_features.h
index 6104123d27..ee6e10590c 100644
--- a/lib/eal/include/rte_pci_dev_features.h
+++ b/lib/eal/include/rte_pci_dev_features.h
@@ -6,4 +6,8 @@
 #define _RTE_PCI_DEV_FEATURES_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <rte_pci_dev_feature_defs.h>
 
@@ -13,3 +17,7 @@
 #define RTE_INTR_MODE_MSIX_NAME "msix"
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif
diff --git a/lib/eal/include/rte_time.h b/lib/eal/include/rte_time.h
index 5ad7c8841a..ec25f7b93d 100644
--- a/lib/eal/include/rte_time.h
+++ b/lib/eal/include/rte_time.h
@@ -6,4 +6,8 @@
 #define _RTE_TIME_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdint.h>
 #include <time.h>
@@ -99,3 +103,7 @@ rte_ns_to_timespec(uint64_t nsec)
 }
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _RTE_TIME_H_ */
diff --git a/lib/eal/include/rte_trace_point_register.h b/lib/eal/include/rte_trace_point_register.h
index 4f5c86552d..2e61439940 100644
--- a/lib/eal/include/rte_trace_point_register.h
+++ b/lib/eal/include/rte_trace_point_register.h
@@ -6,4 +6,8 @@
 #define _RTE_TRACE_POINT_REGISTER_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #ifdef _RTE_TRACE_POINT_H_
 #error for registration, include this file first before <rte_trace_point.h>
@@ -43,3 +47,7 @@ do { \
 } while (0)
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _RTE_TRACE_POINT_REGISTER_H_ */
diff --git a/lib/eal/linux/include/rte_os.h b/lib/eal/linux/include/rte_os.h
index 35c07c70cb..c72bf5b7e6 100644
--- a/lib/eal/linux/include/rte_os.h
+++ b/lib/eal/linux/include/rte_os.h
@@ -6,4 +6,8 @@
 #define _RTE_OS_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /**
  * This header should contain any definition
@@ -43,3 +47,7 @@ typedef cpu_set_t rte_cpuset_t;
 #endif
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _RTE_OS_H_ */
-- 
2.34.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2022-03-01 10:41:01.527664557 +0000
+++ 0002-eal-add-missing-C-guards.patch	2022-03-01 10:41:01.235244084 +0000
@@ -1 +1 @@
-From d7e9c02ccad8928b6b804049ced9a3ce6172d81e Mon Sep 17 00:00:00 2001
+From b2f85a808aef62fee67300f7b37307f92183dc0c Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit d7e9c02ccad8928b6b804049ced9a3ce6172d81e ]
+
@@ -18 +19,0 @@
-Cc: stable@dpdk.org
@@ -79 +80 @@
-index 9556bbf4d0..fc9fbaaab2 100644
+index 2718612cce..a7dbe23449 100644
@@ -91 +92 @@
-@@ -47,3 +51,7 @@ __attribute__((section(".text.internal")))
+@@ -44,3 +48,7 @@ __attribute__((section(".text.internal")))