[dpdk-dev] [PATCH 4/4] security: add reserved bitfields

[Akhil Goyal]

In struct rte_security_ipsec_sa_options, for every new option
added, there is an ABI breakage, to avoid, a reserved_opts
bitfield is added to for the remaining bits available in the
structure.
Now for every new sa option, these reserved_opts can be reduced
and new option can be added. A corresponding exception is also
added in devtools/libabigail.abignore

Signed-off-by: Akhil Goyal <gakhil at marvell.com>
---
 devtools/libabigail.abignore | 4 ++++
 lib/security/rte_security.h  | 6 ++++++
 2 files changed, 10 insertions(+)

diff --git a/devtools/libabigail.abignore b/devtools/libabigail.abignore
index 93158405e0..5d8da28e55 100644
--- a/devtools/libabigail.abignore
+++ b/devtools/libabigail.abignore
@@ -52,3 +52,7 @@
 ; https://sourceware.org/bugzilla/show_bug.cgi?id=28060
 [suppress_type]
 	name = rte_eth_dev_data
+
+; Ignore changes in reserved_opts bitfield of rte_security_ipsec_sa_options
+[suppress_variable]
+	name = reserved_opts
diff --git a/lib/security/rte_security.h b/lib/security/rte_security.h
index 88d31de0a6..4606425e8d 100644
--- a/lib/security/rte_security.h
+++ b/lib/security/rte_security.h
@@ -181,6 +181,12 @@ struct rte_security_ipsec_sa_options {
 	 * * 0: Disable per session security statistics collection for this SA.
 	 */
 	uint32_t stats : 1;
+
+	/** Reserved bit fields for future extension
+	 *
+	 * Note: reduce number of bits in reserved_opts for every new option
+	 */
+	uint32_t reserved_opts : 24;
 };
 
 /** IPSec security association direction */
-- 
2.25.1