From 20bd3daffc8630a1c1185d1c9995319abd5d1be7 Mon Sep 17 00:00:00 2001
From: Richard Fuchs <rfuchs@sipwise.com>
Date: Thu, 25 Jun 2026 08:02:58 -0400
Subject: [PATCH] MT#65392 add "fast" flag for delete processing

Change-Id: I16d4cdd9ecc8dbe612eac2ff002283b606f0f082
(cherry picked from commit 6391c6bf9525aa296736cb3e0a5f43f349d52c09)
(cherry picked from commit 34d8c9053abef101ab5e5fefd47ecf81c3135935)
---
 daemon/call.c               | 9 +++++----
 daemon/call_interfaces.c    | 6 +++++-
 docs/ng_control_protocol.md | 6 ++++++
 include/call.h              | 3 ++-
 include/call_interfaces.h   | 1 +
 utils/rtpengine-ng-client   | 1 +
 6 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/daemon/call.c b/daemon/call.c
index bccccd04e..929142bf3 100644
--- a/daemon/call.c
+++ b/daemon/call.c
@@ -5303,7 +5303,8 @@ static void monologue_stop(struct call_monologue *ml, bool stop_media_subsribers
 // call must be locked in W.
 // unlocks the call and releases the reference prior to returning, even on error.
 int call_delete_branch(call_t *c, const str *branch,
-	const str *fromtag, const str *totag, ng_command_ctx_t *ctx, int64_t delete_delay)
+	const str *fromtag, const str *totag, ng_command_ctx_t *ctx, int64_t delete_delay,
+	bool stats)
 {
 	struct call_monologue *ml;
 	int ret;
@@ -5386,13 +5387,13 @@ do_delete:
 	if (!del_stop)
 		goto del_all;
 
-	if (ctx)
+	if (ctx && stats)
 		ng_call_stats(ctx, c, fromtag, totag, NULL);
 
 	goto success_unlock;
 
 del_all:
-	if (ctx)
+	if (ctx && stats)
 		ng_call_stats(ctx, c, NULL, NULL, NULL);
 
 	for (__auto_type i = c->monologues.head; i; i = i->next) {
@@ -5443,7 +5444,7 @@ int call_delete_branch_by_id(const str *callid, const str *branch,
 		ilog(LOG_INFO, "Call-ID to delete not found");
 		return -1;
 	}
-	return call_delete_branch(c, branch, fromtag, totag, ctx, delete_delay);
+	return call_delete_branch(c, branch, fromtag, totag, ctx, delete_delay, false);
 }
 
 struct call_media *call_make_transform_media(struct call_monologue *ml, const str *type, enum media_type type_id,
diff --git a/daemon/call_interfaces.c b/daemon/call_interfaces.c
index ba3641b8c..6b310d684 100644
--- a/daemon/call_interfaces.c
+++ b/daemon/call_interfaces.c
@@ -1128,6 +1128,9 @@ void call_ng_flags_flags(str *s, unsigned int idx, helper_arg arg) {
 		case CSH_LOOKUP("fatal"):
 			out->fatal = true;
 			break;
+		case CSH_LOOKUP("fast"):
+			out->fast = true;
+			break;
 		case CSH_LOOKUP("fragment"):
 			out->fragment = true;
 			break;
@@ -2702,7 +2705,8 @@ const char *call_delete_ng(ng_command_ctx_t *ctx) {
 	if (call_delete_branch(c, &rtpp_flags.via_branch,
 				&rtpp_flags.from_tag,
 				(rtpp_flags.to_tag_flag ? &rtpp_flags.to_tag : NULL),
-				ctx, rtpp_flags.delete_delay))
+				ctx, rtpp_flags.delete_delay,
+				!rtpp_flags.fast))
 	{
 		goto err;
 	}
diff --git a/docs/ng_control_protocol.md b/docs/ng_control_protocol.md
index 52f6f73a5..24f364d2c 100644
--- a/docs/ng_control_protocol.md
+++ b/docs/ng_control_protocol.md
@@ -1699,6 +1699,12 @@ of zero or more strings. The following flags are defined:
 	result in an error reply (i.e. `"result": "error"`). The default is to reply with a warning only
 	(i.e. `"result": "ok", "warning": ...`).
 
+* `fast`
+
+    Omit adding statistics to the response message. This makes processing of
+    the delete message more light-weight and produces a smaller response
+    message, which is beneficial if the statistics aren't needed.
+
 * `to-tag`
 
 	This flag controls whether the `"To"` tag's value is honoured or ignored when handling
diff --git a/include/call.h b/include/call.h
index 8aba1f338..db87a98e8 100644
--- a/include/call.h
+++ b/include/call.h
@@ -866,7 +866,8 @@ void monologue_destroy(struct call_monologue *ml);
 int call_delete_branch_by_id(const str *callid, const str *branch,
 	const str *fromtag, const str *totag, ng_command_ctx_t *, int64_t delete_delay);
 int call_delete_branch(call_t *, const str *branch,
-	const str *fromtag, const str *totag, ng_command_ctx_t *, int64_t delete_delay);
+	const str *fromtag, const str *totag, ng_command_ctx_t *, int64_t delete_delay,
+	bool stats);
 void call_destroy(call_t *);
 struct call_media *call_media_new(call_t *call);
 void call_media_free(struct call_media **mdp);
diff --git a/include/call_interfaces.h b/include/call_interfaces.h
index e7e97b499..2d1d550f3 100644
--- a/include/call_interfaces.h
+++ b/include/call_interfaces.h
@@ -285,6 +285,7 @@ RTPE_NG_FLAGS_STR_CASE_HT_PARAMS
 		     pierce_nat:1,
 		     directional:1,
 		     fatal:1,
+		     fast:1,
 		     new_branch:1,
 		     provisional:1,
 		     /* to_tag is used especially by delete handling */
diff --git a/utils/rtpengine-ng-client b/utils/rtpengine-ng-client
index 1fb29a5c5..bab4b55d8 100755
--- a/utils/rtpengine-ng-client
+++ b/utils/rtpengine-ng-client
@@ -55,6 +55,7 @@ my @flags = qw(
 	block-egress
 	directional
 	allow-no-codec-media
+	fast
 );
 
 my @string_opts = qw(