Change in osmo-sgsn[master]: Document max retransmit times for T3395

Pau Espin Pedrol gerrit-no-reply at lists.osmocom.org
Tue May 28 19:28:33 UTC 2019


Pau Espin Pedrol has uploaded this change for review. ( https://gerrit.osmocom.org/14241


Change subject: Document max retransmit times for T3395
......................................................................

Document max retransmit times for T3395

Spec also states same value is used for T3390, which we don't yet
implement.

Change-Id: I1a2276bd42d1ea5706cf9cc26d3e44baa6fbf066
---
M src/gprs/gprs_gmm.c
1 file changed, 5 insertions(+), 2 deletions(-)



  git pull ssh://gerrit.osmocom.org:29418/osmo-sgsn refs/changes/41/14241/1

diff --git a/src/gprs/gprs_gmm.c b/src/gprs/gprs_gmm.c
index a18a54e..e7f0bfe 100644
--- a/src/gprs/gprs_gmm.c
+++ b/src/gprs/gprs_gmm.c
@@ -67,6 +67,9 @@
 
 #define PTMSI_ALLOC
 
+/* 3GPP TS 04.08 sec 6.1.3.4.3(.a) "Abnormal cases" */
+#define T339X_MAX_RETRANS 4
+
 extern struct sgsn_instance *sgsn;
 extern void *tall_sgsn_ctx;
 
@@ -2797,8 +2800,8 @@
 
 	switch (pdp->T) {
 	case 3395:	/* waiting for PDP CTX DEACT ACK */
-		if (pdp->num_T_exp >= 5) {
-			LOGPDPCTXP(LOGL_NOTICE, pdp, "T3395 expired >= 5 times\n");
+		if (pdp->num_T_exp > T339X_MAX_RETRANS) {
+			LOGPDPCTXP(LOGL_NOTICE, pdp, "T3395 expired > %d times\n", T339X_MAX_RETRANS);
 			pdp->state = PDP_STATE_INACTIVE;
 			if (pdp->ggsn)
 				sgsn_delete_pdp_ctx(pdp);

-- 
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Gerrit-Project: osmo-sgsn
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I1a2276bd42d1ea5706cf9cc26d3e44baa6fbf066
Gerrit-Change-Number: 14241
Gerrit-PatchSet: 1
Gerrit-Owner: Pau Espin Pedrol <pespin at sysmocom.de>
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