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NetworkManager/SOURCES/1011-device-do-not-set-MAC-...

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From 51901a2266d7d1ffd3465906c55064c512cb075d Mon Sep 17 00:00:00 2001
From: Gris Ge <fge@redhat.com>
Date: Wed, 12 Jul 2023 16:22:03 +0800
Subject: [PATCH] device: do not set MAC address on iface with index <=0
The `nm_device_hw_addr_reset()` should only set MAC address on NIC
with valid(>0) interface index.
The failure was found by `ovs_mtu` test of NMCI, failed to reproduce
the original problem (`ovs_mtu` test of NMCI) with 100 times retry.
And no trace log found for original test failure, hence cannot tell why
`nm_device_hw_addr_reset()` been invoked with iface index 0.
Signed-off-by: Gris Ge <fge@redhat.com>
(cherry picked from commit 215bc1525501b22325c2a17090a5f911e01f06a9)
(cherry picked from commit 21f1e5cdc7d72376cdaa63112d8a134b714b2002)
(cherry picked from commit 37bd70034f7f43becf2cc64468143c5ea2666762)
---
src/core/devices/nm-device.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/src/core/devices/nm-device.c b/src/core/devices/nm-device.c
index 2ac55fa83c..5748d80393 100644
--- a/src/core/devices/nm-device.c
+++ b/src/core/devices/nm-device.c
@@ -16859,6 +16859,7 @@ nm_device_hw_addr_reset(NMDevice *self, const char *detail)
{
NMDevicePrivate *priv;
const char *addr;
+ int ifindex;
g_return_val_if_fail(NM_IS_DEVICE(self), FALSE);
@@ -16868,7 +16869,13 @@ nm_device_hw_addr_reset(NMDevice *self, const char *detail)
return TRUE;
priv->hw_addr_type = HW_ADDR_TYPE_UNSET;
- addr = nm_device_get_initial_hw_address(self);
+
+ ifindex = nm_device_get_ip_ifindex(self);
+ if (ifindex <= 0) {
+ return TRUE;
+ }
+
+ addr = nm_device_get_initial_hw_address(self);
if (!addr) {
/* as hw_addr_type is not UNSET, we expect that we can get an
* initial address to which to reset. */
--
2.41.0