[PATCH] devtools: document ABI suppression rules

[David Marchand <david.marchand@redhat.com>]

Suppression rules are being added during the life of an ABI and cleaned
when bumping the major version.
Sort and document those rules to avoid pruning rules that should be
kept.

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 devtools/libabigail.abignore | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/devtools/libabigail.abignore b/devtools/libabigail.abignore
index c618f20032..587cc5c381 100644
--- a/devtools/libabigail.abignore
+++ b/devtools/libabigail.abignore
@@ -1,3 +1,7 @@
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+; Core suppression rules: DO NOT TOUCH;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
 [suppress_function]
         symbol_version = EXPERIMENTAL
 [suppress_variable]
@@ -16,15 +20,23 @@
 [suppress_file]
         soname_regexp = ^librte_.*mlx.*glue\.
 
-; Ignore fields inserted in place of reserved_opts of rte_security_ipsec_sa_options
-[suppress_type]
-        name = rte_security_ipsec_sa_options
-        has_data_member_inserted_between = {offset_of(reserved_opts), end}
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+; Experimental APIs exceptions ;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 ; Ignore changes to rte_crypto_asym_op, asymmetric crypto API is experimental
 [suppress_type]
         name = rte_crypto_asym_op
 
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+; Temporary exceptions till next major ABI version ;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+; Ignore fields inserted in place of reserved_opts of rte_security_ipsec_sa_options
+[suppress_type]
+        name = rte_security_ipsec_sa_options
+        has_data_member_inserted_between = {offset_of(reserved_opts), end}
+
 ; Ignore section attribute fixes in experimental regexdev library
 [suppress_file]
         soname_regexp = ^librte_regexdev\.
-- 
2.23.0