[dpdk-dev] [PATCH] eventdev: reserve space in main structs for extension
jerinj at marvell.com
jerinj at marvell.com
Fri Nov 8 17:56:03 CET 2019
From: Jerin Jacob <jerinj at marvell.com>
The struct rte_eventdev and rte_eventdev_data are supposed
to be used internally only, but there is a chance that
increasing their size would break ABI for some applications.
In order to allow smooth addition of features without breaking
ABI compatibility, some space is reserved.
Signed-off-by: Jerin Jacob <jerinj at marvell.com>
---
lib/librte_eventdev/rte_eventdev.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/lib/librte_eventdev/rte_eventdev.h b/lib/librte_eventdev/rte_eventdev.h
index ced6f29d9..bc8952576 100644
--- a/lib/librte_eventdev/rte_eventdev.h
+++ b/lib/librte_eventdev/rte_eventdev.h
@@ -1282,6 +1282,8 @@ struct rte_eventdev_data {
char name[RTE_EVENTDEV_NAME_MAX_LEN];
/**< Unique identifier name */
+ uint64_t reserved_64s[4]; /**< Reserved for future fields */
+ void *reserved_ptrs[4]; /**< Reserved for future fields */
} __rte_cache_aligned;
/** @internal The data structure associated with each event device. */
@@ -1314,6 +1316,9 @@ struct rte_eventdev {
RTE_STD_C11
uint8_t attached : 1;
/**< Flag indicating the device is attached */
+
+ uint64_t reserved_64s[4]; /**< Reserved for future fields */
+ void *reserved_ptrs[4]; /**< Reserved for future fields */
} __rte_cache_aligned;
extern struct rte_eventdev *rte_eventdevs;
--
2.23.0
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