Change in osmo-trx[master]: TRXD: set don't-fragment flag on all outgoing packets

fixeria gerrit-no-reply at lists.osmocom.org
Tue Apr 20 19:17:42 UTC 2021


fixeria has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-trx/+/23813 )


Change subject: TRXD: set don't-fragment flag on all outgoing packets
......................................................................

TRXD: set don't-fragment flag on all outgoing packets

Change-Id: I0891f1d80e4c7c92a58b34ac986ef5334e8c78e2
Related: SYS#4895, OS#4941, OS#4006
---
M Transceiver52M/Transceiver.cpp
1 file changed, 6 insertions(+), 0 deletions(-)



  git pull ssh://gerrit.osmocom.org:29418/osmo-trx refs/changes/13/23813/1

diff --git a/Transceiver52M/Transceiver.cpp b/Transceiver52M/Transceiver.cpp
index 91f06ec..20714cf 100644
--- a/Transceiver52M/Transceiver.cpp
+++ b/Transceiver52M/Transceiver.cpp
@@ -255,6 +255,12 @@
     if (mDataSockets[i] < 0)
       return false;
 
+    /* Force the don't-fragment flag to be set on all outgoing packets */
+    int val = IP_PMTUDISC_DO;
+    rv = setsockopt(mDataSockets[i], IPPROTO_IP, IP_MTU_DISCOVER, &val, sizeof(val));
+    if (rv != 0)
+      LOG(FATAL) << "Failed to set the don't-fragment flag for TRXD socket";
+
     if (i && filler == FILLER_DUMMY)
       filler = FILLER_ZERO;
 

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Gerrit-Project: osmo-trx
Gerrit-Branch: master
Gerrit-Change-Id: I0891f1d80e4c7c92a58b34ac986ef5334e8c78e2
Gerrit-Change-Number: 23813
Gerrit-PatchSet: 1
Gerrit-Owner: fixeria <vyanitskiy at sysmocom.de>
Gerrit-MessageType: newchange
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