[dpdk-dev] [PATCH v3 13/14] eal: unify internal config initialization

[Anatoly Burakov]

Currently, each EAL will update internal/shared config in their
own way at init, resulting in needless duplication of code and
OS-dependent behavior. Move the functions to a common file and
add missing FreeBSD steps.

Signed-off-by: Anatoly Burakov <anatoly.burakov at intel.com>
---
 lib/librte_eal/common/eal_common_mcfg.c | 18 ++++++++++++++++++
 lib/librte_eal/common/eal_memcfg.h      |  8 ++++++++
 lib/librte_eal/freebsd/eal/eal.c        |  2 ++
 lib/librte_eal/linux/eal/eal.c          | 22 ++--------------------
 4 files changed, 30 insertions(+), 20 deletions(-)

diff --git a/lib/librte_eal/common/eal_common_mcfg.c b/lib/librte_eal/common/eal_common_mcfg.c
index dc6665d6a..fe8d2b726 100644
--- a/lib/librte_eal/common/eal_common_mcfg.c
+++ b/lib/librte_eal/common/eal_common_mcfg.c
@@ -31,6 +31,24 @@ eal_mcfg_wait_complete(void)
 		rte_pause();
 }
 
+void
+eal_mcfg_update_internal(void)
+{
+	struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
+
+	internal_config.legacy_mem = mcfg->legacy_mem;
+	internal_config.single_file_segments = mcfg->single_file_segments;
+}
+
+void
+eal_mcfg_update_from_internal(void)
+{
+	struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
+
+	mcfg->legacy_mem = internal_config.legacy_mem;
+	mcfg->single_file_segments = internal_config.single_file_segments;
+}
+
 void
 rte_mcfg_mem_read_lock(void)
 {
diff --git a/lib/librte_eal/common/eal_memcfg.h b/lib/librte_eal/common/eal_memcfg.h
index a2434417e..d02ac1621 100644
--- a/lib/librte_eal/common/eal_memcfg.h
+++ b/lib/librte_eal/common/eal_memcfg.h
@@ -68,6 +68,14 @@ struct rte_mem_config {
 	uint8_t dma_maskbits;
 };
 
+/* update internal config from shared mem config */
+void
+eal_mcfg_update_internal(void);
+
+/* update shared mem config from internal config */
+void
+eal_mcfg_update_from_internal(void);
+
 /* wait until primary process initialization is complete */
 void
 eal_mcfg_wait_complete(void);
diff --git a/lib/librte_eal/freebsd/eal/eal.c b/lib/librte_eal/freebsd/eal/eal.c
index 13e230fc8..6bfe203fd 100644
--- a/lib/librte_eal/freebsd/eal/eal.c
+++ b/lib/librte_eal/freebsd/eal/eal.c
@@ -379,6 +379,7 @@ rte_config_init(void)
 	case RTE_PROC_PRIMARY:
 		if (rte_eal_config_create() < 0)
 			return -1;
+		eal_mcfg_update_internal();
 		break;
 	case RTE_PROC_SECONDARY:
 		if (rte_eal_config_attach() < 0)
@@ -386,6 +387,7 @@ rte_config_init(void)
 		eal_mcfg_wait_complete();
 		if (rte_eal_config_reattach() < 0)
 			return -1;
+		eal_mcfg_update_from_internal();
 		break;
 	case RTE_PROC_AUTO:
 	case RTE_PROC_INVALID:
diff --git a/lib/librte_eal/linux/eal/eal.c b/lib/librte_eal/linux/eal/eal.c
index 4fd18b15f..fa205fd29 100644
--- a/lib/librte_eal/linux/eal/eal.c
+++ b/lib/librte_eal/linux/eal/eal.c
@@ -472,24 +472,6 @@ eal_proc_type_detect(void)
 	return ptype;
 }
 
-/* copies data from internal config to shared config */
-static void
-eal_update_mem_config(void)
-{
-	struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
-	mcfg->legacy_mem = internal_config.legacy_mem;
-	mcfg->single_file_segments = internal_config.single_file_segments;
-}
-
-/* copies data from shared config to internal config */
-static void
-eal_update_internal_config(void)
-{
-	struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
-	internal_config.legacy_mem = mcfg->legacy_mem;
-	internal_config.single_file_segments = mcfg->single_file_segments;
-}
-
 /* Sets up rte_config structure with the pointer to shared memory config.*/
 static int
 rte_config_init(void)
@@ -500,7 +482,7 @@ rte_config_init(void)
 	case RTE_PROC_PRIMARY:
 		if (rte_eal_config_create() < 0)
 			return -1;
-		eal_update_mem_config();
+		eal_mcfg_update_from_internal();
 		break;
 	case RTE_PROC_SECONDARY:
 		if (rte_eal_config_attach() < 0)
@@ -508,7 +490,7 @@ rte_config_init(void)
 		eal_mcfg_wait_complete();
 		if (rte_eal_config_reattach() < 0)
 			return -1;
-		eal_update_internal_config();
+		eal_mcfg_update_internal();
 		break;
 	case RTE_PROC_AUTO:
 	case RTE_PROC_INVALID:
-- 
2.17.1