From 2e0112520892b8f6a794c16bf3d025a7d10a89a5 Mon Sep 17 00:00:00 2001
From: Oliver Smith <osmith@sysmocom.de>
Date: Wed, 2 Mar 2022 11:24:31 +0100
Subject: [PATCH] libgtp: set PDP_MAX to 128

Reduce PDP_MAX and therefore QUEUE_SIZE (which is PDP_MAX * 2, see
gtp/queue.h). Harald explained why:

  libgtp statically allocates immensely large queues for packet
  re-transmissions by default, way too much to run OsmoSGSN or
  OpenGGSN/OsmoGGSN on the small ARM926EJS of sysmoBTS 1002.

Related: https://gerrit.osmocom.org/c/meta-telephony/+/4092/2#message-8ec2174fac6c0bf3d9aab1270a7ebe06955d3bea
Change-Id: I97d5db8f2def4d628a6c4e67c27f07c7200b94d4
---
 gtp/pdp.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gtp/pdp.h b/gtp/pdp.h
index 4dcdde46..9587f31e 100644
--- a/gtp/pdp.h
+++ b/gtp/pdp.h
@@ -24,7 +24,7 @@ struct gsn_t;
 #define LOGPDPX(ss, level, pdp, fmt, args...)				\
 	LOGP(ss, level, "PDP(%s:%u): " fmt, imsi_gtp2str(&(pdp)->imsi), (pdp)->nsapi, ## args)
 
-#define PDP_MAX 1024		/* Max number of PDP contexts */
+#define PDP_MAX 128		/* Max number of PDP contexts */
 #define PDP_MAXNSAPI 16		/* Max number of NSAPI */
 
 #define PDP_EUA_ORG_IETF	0xF1
-- 
2.30.2