From ec4c65f1d098d9343cb51edb16e61e6091d7ef5d Mon Sep 17 00:00:00 2001
From: Fernando Fernandez Mancera <ffmancera@riseup.net>
Date: Wed, 18 Dec 2024 11:23:25 +0100
Subject: [PATCH] glib-aux: add nm_ether_addr_hash() helper

Add a hash generation helper for NMEtherAddr struct. This can be used
for HashTables containing pointers to NMEtherAddr structs.

(cherry picked from commit a63eec924cccf324b82a66fccc9d72d49bb2adfc)
(cherry picked from commit 6371802087caf883e6880e4049c578ff1b7318e0)
(cherry picked from commit 73aa5b47fa948f03c2482fc1b6d6070ef722f541)
(cherry picked from commit 7003adb1ef0285a9003f3b0de0265ca3ee201eef)
---
 src/libnm-glib-aux/nm-shared-utils.c | 11 +++++++++++
 src/libnm-glib-aux/nm-shared-utils.h |  2 ++
 2 files changed, 13 insertions(+)

diff --git a/src/libnm-glib-aux/nm-shared-utils.c b/src/libnm-glib-aux/nm-shared-utils.c
index 34a3af2053..3319a1fac2 100644
--- a/src/libnm-glib-aux/nm-shared-utils.c
+++ b/src/libnm-glib-aux/nm-shared-utils.c
@@ -58,6 +58,17 @@ nm_ether_addr_from_string(NMEtherAddr *addr, const char *str)
     return addr;
 }
 
+guint
+nm_ether_addr_hash(const NMEtherAddr *a)
+{
+    NMHashState h;
+
+    nm_hash_init(&h, 1947951703u);
+    nm_hash_update(&h, a, sizeof(NMEtherAddr));
+
+    return nm_hash_complete(&h);
+}
+
 /*****************************************************************************/
 
 /**
diff --git a/src/libnm-glib-aux/nm-shared-utils.h b/src/libnm-glib-aux/nm-shared-utils.h
index e37cf5e654..df3dea8945 100644
--- a/src/libnm-glib-aux/nm-shared-utils.h
+++ b/src/libnm-glib-aux/nm-shared-utils.h
@@ -236,6 +236,8 @@ nm_ether_addr_is_zero(const NMEtherAddr *a)
     return nm_memeq(a, &nm_ether_addr_zero, sizeof(NMEtherAddr));
 }
 
+guint nm_ether_addr_hash(const NMEtherAddr *a);
+
 /*****************************************************************************/
 
 struct ether_addr;