Katran config to specify cleanup on shutdown

Summary: I'm adding a member `cleanupOnShutdown` that determines whether we detach the BPF programs on shutdown. Reviewed By: lima1756 Differential Revision: D56335292 fbshipit-source-id: 1a8f6dc84c6513b871c3d0ceb27eb384834c4416
facebookincubator · Apr 19, 2024 · a7c267b · a7c267b
1 parent 6b0664f
commit a7c267b
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Showing 2 changed files with 2 additions and 1 deletion.
diff --git a/katran/lib/KatranLb.cpp b/katran/lib/KatranLb.cpp
@@ -183,7 +183,7 @@ KatranLb::KatranLb(
 }
 
 KatranLb::~KatranLb() {
-  if (!config_.testing && progsAttached_) {
+  if (!config_.testing && progsAttached_ && config_.cleanupOnShutdown) {
     int res;
     auto mainIfindex = ctlValues_[kMainIntfPos].ifindex;
     auto hcIfindex = ctlValues_[kHcIntfPos].ifindex;

diff --git a/katran/lib/KatranLbStructs.h b/katran/lib/KatranLbStructs.h
@@ -219,6 +219,7 @@ struct KatranConfig {
   bool enableCidV3 = false;
   uint32_t mainInterfaceIndex = kUnspecifiedInterfaceIndex;
   uint32_t hcInterfaceIndex = kUnspecifiedInterfaceIndex;
+  bool cleanupOnShutdown = true;
 };
 
 /**