[PATCH 19.11] eal/freebsd: fix use of newer cpuset macros

[Bruce Richardson]

FreeBSD has updated its CPU macros to align more with the definitions
used on Linux[1]. Unfortunately, while this makes compatibility better
in future, it means we need to have both legacy and newer definition
support. Use a meson check to determine which set of macros are used.

[1] https://cgit.freebsd.org/src/commit/?id=e2650af157bc

Bugzilla ID: 1014
Fixes: c3568ea37670 ("eal: restrict control threads to startup CPU affinity")
Fixes: b6be16acfeb1 ("eal: fix control thread affinity with --lcores")

Signed-off-by: David Marchand <david.marchand at redhat.com>
Signed-off-by: Bruce Richardson <bruce.richardson at intel.com>
---
This is a backport of commit 2f51bc9c27a4f1da674d66499667155663dcc419
for 19.11 release tree
---
 lib/librte_eal/freebsd/eal/include/rte_os.h | 16 +++++++++++++++-
 lib/librte_eal/freebsd/eal/meson.build      | 11 +++++++++++
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/lib/librte_eal/freebsd/eal/include/rte_os.h b/lib/librte_eal/freebsd/eal/include/rte_os.h
index 78ee6fd8f4..908c37e9aa 100644
--- a/lib/librte_eal/freebsd/eal/include/rte_os.h
+++ b/lib/librte_eal/freebsd/eal/include/rte_os.h
@@ -17,6 +17,7 @@ extern "C" {
 #include <pthread_np.h>

 typedef cpuset_t rte_cpuset_t;
+#ifdef RTE_EAL_FREEBSD_CPUSET_LEGACY
 #define RTE_CPU_AND(dst, src1, src2) do \
 { \
 	cpuset_t tmp; \
@@ -50,7 +51,20 @@ typedef cpuset_t rte_cpuset_t;
 	CPU_ANDNOT(&tmp, src); \
 	CPU_COPY(&tmp, dst); \
 } while (0)
-#endif
+#endif /* CPU_NAND */
+
+#else /* RTE_EAL_FREEBSD_CPUSET_LEGACY */
+
+#define RTE_CPU_AND CPU_AND
+#define RTE_CPU_OR CPU_OR
+#define RTE_CPU_FILL CPU_FILL
+#define RTE_CPU_NOT(dst, src) do { \
+	cpu_set_t tmp; \
+	CPU_FILL(&tmp); \
+	CPU_XOR(dst, src, &tmp); \
+} while (0)
+
+#endif /* RTE_EAL_FREEBSD_CPUSET_LEGACY */

 #ifdef __cplusplus
 }
diff --git a/lib/librte_eal/freebsd/eal/meson.build b/lib/librte_eal/freebsd/eal/meson.build
index 1426f7e5f1..deb367f44c 100644
--- a/lib/librte_eal/freebsd/eal/meson.build
+++ b/lib/librte_eal/freebsd/eal/meson.build
@@ -20,3 +20,14 @@ env_sources = files('eal_alarm.c',
 )

 deps += ['kvargs']
+
+# test for version of cpuset macros
+cpuset_test_code = '''
+        #include <sys/types.h>
+        #include <sys/cpuset.h>
+        void cpu_test_or(cpuset_t *s) { CPU_OR(s, s, s); }
+'''
+
+if not cc.compiles(cpuset_test_code, name: 'Detect argument count for CPU_OR')
+    dpdk_conf.set('RTE_EAL_FREEBSD_CPUSET_LEGACY', 1)
+endif
--
2.37.1