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Sun, 04 Jan 2026 10:41:59 -0800 (PST) From: Andre Carvalho Date: Sun, 04 Jan 2026 18:41:14 +0000 Subject: [PATCH net-next v9 4/6] netconsole: clear dev_name for devices bound by mac Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260104-netcons-retrigger-v9-4-38aa643d2283@gmail.com> References: <20260104-netcons-retrigger-v9-0-38aa643d2283@gmail.com> In-Reply-To: <20260104-netcons-retrigger-v9-0-38aa643d2283@gmail.com> To: Breno Leitao , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Shuah Khan , Simon Horman Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Andre Carvalho X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1767552086; l=1518; i=asantostc@gmail.com; s=20250807; h=from:subject:message-id; bh=2IR9K9fFwUyb3vK1T1dQvAvM/jN1tGrfN72mQMj/cpo=; b=HHavGEkPJ8xbid2UCwSa5wsmGmUarwYg/Ad0iqOlkjCOIfK6OXlsEqlCquKnMu2uLZkvF5k82 KjqfTUYkqz6DFl0o+9FlBaLmWTrXO83gFkEGDI5/Lfde1OTihiC74hS X-Developer-Key: i=asantostc@gmail.com; a=ed25519; pk=eWre+RwFHCxkiaQrZLsjC67mZ/pZnzSM/f7/+yFXY4Q= This patch makes sure netconsole clears dev_name for devices bound by mac in order to allow calling setup_netpoll on targets that have previously been cleaned up (in order to support resuming deactivated targets). This is required as netpoll_setup populates dev_name even when devices are matched via mac address. The cleanup is done inside netconsole as bound by mac is a netconsole concept. Signed-off-by: Andre Carvalho --- drivers/net/netconsole.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c index 7a1e5559fc0d..02a3463e8d24 100644 --- a/drivers/net/netconsole.c +++ b/drivers/net/netconsole.c @@ -242,6 +242,12 @@ static void populate_configfs_item(struct netconsole_target *nt, } #endif /* CONFIG_NETCONSOLE_DYNAMIC */ +/* Check if the target was bound by mac address. */ +static bool bound_by_mac(struct netconsole_target *nt) +{ + return is_valid_ether_addr(nt->np.dev_mac); +} + /* Allocate and initialize with defaults. * Note that these targets get their config_item fields zeroed-out. */ @@ -284,6 +290,8 @@ static void netconsole_process_cleanups_core(void) /* all entries in the cleanup_list needs to be disabled */ WARN_ON_ONCE(nt->state == STATE_ENABLED); do_netpoll_cleanup(&nt->np); + if (bound_by_mac(nt)) + memset(&nt->np.dev_name, 0, IFNAMSIZ); /* moved the cleaned target to target_list. Need to hold both * locks */ -- 2.52.0