From 7250050f6364aa3891085908e4464949fa67108e Mon Sep 17 00:00:00 2001
From: Nils Andreas Svee <me@lochnair.net>
Date: Thu, 23 Apr 2026 00:16:12 +0700
Subject: [PATCH] feat(deps): Add hashlru for in-flight probe caching

---
 Cargo.lock    | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml    |  1 +
 src/config.rs |  2 +-
 3 files changed, 59 insertions(+), 1 deletion(-)

diff --git a/Cargo.lock b/Cargo.lock
index 80f3a37..162210b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,18 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "ahash"
+version = "0.8.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a15f179cd60c4584b8a8c596927aadc462e27f2ca70c04e0071964a73ba7a75"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+ "version_check",
+ "zerocopy",
+]
+
 [[package]]
 name = "aho-corasick"
 version = "1.1.4"
@@ -155,6 +167,24 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0cc23270f6e1808e30a928bdc84dea0b9b4136a8bc82338574f23baf47bbd280"
 
+[[package]]
+name = "hashbrown"
+version = "0.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43a3c133739dddd0d2990f9a4bdf8eb4b21ef50e4851ca85ab661199821d510e"
+dependencies = [
+ "ahash",
+]
+
+[[package]]
+name = "hashlru"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2c782df656366ccb42fbbac7c7c180535a43d906a138ffb491ec3ed56a239ab"
+dependencies = [
+ "hashbrown",
+]
+
 [[package]]
 name = "icmp-socket2"
 version = "0.4.2"
@@ -420,6 +450,7 @@ dependencies = [
  "anyhow",
  "fastrand",
  "flume",
+ "hashlru",
  "icmp-socket2",
  "libc",
  "log",
@@ -467,6 +498,12 @@ version = "1.0.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
 
+[[package]]
+name = "version_check"
+version = "0.9.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
+
 [[package]]
 name = "wasip2"
 version = "1.0.3+wasi-0.2.9"
@@ -541,3 +578,23 @@ name = "wit-bindgen"
 version = "0.57.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1ebf944e87a7c253233ad6766e082e3cd714b5d03812acc24c318f549614536e"
+
+[[package]]
+name = "zerocopy"
+version = "0.8.48"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eed437bf9d6692032087e337407a86f04cd8d6a16a37199ed57949d415bd68e9"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.8.48"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70e3cd084b1788766f53af483dd21f93881ff30d7320490ec3ef7526d203bad4"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
diff --git a/Cargo.toml b/Cargo.toml
index 734430d..d35910a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -29,6 +29,7 @@ rust-uci = { git = "https://github.com/namib-project/rust-uci.git", rev = "71ea7
 thiserror = "2.0"
 libc = "0.2"
 flume = { version = "0.12.0",  default-features = false, features = ["eventual-fairness", "select"] }
+hashlru = "0.11.1"
 
 [dependencies.log]
 features = ["std"]
diff --git a/src/config.rs b/src/config.rs
index b7b36e0..2aad13e 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -55,7 +55,7 @@ impl From<FlexiBool> for bool {
     }
 }
 
-#[derive(Clone, Copy, Debug)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
 pub enum MeasurementType {
     Icmp = 1,
     IcmpTimestamps,