[{"id":3681455,"web_url":"http://patchwork.ozlabs.org/comment/3681455/","msgid":"<IA3PR11MB8986CB8CCF01A323EC675F5EE52A2@IA3PR11MB8986.namprd11.prod.outlook.com>","list_archive_url":null,"date":"2026-04-23T13:14:05","subject":"Re: [Intel-wired-lan] [PATCH net v4 1/4] iavf: return EBUSY if\n reset in progress or not ready during MAC change","submitter":{"id":75597,"url":"http://patchwork.ozlabs.org/api/people/75597/","name":"Loktionov, Aleksandr","email":"aleksandr.loktionov@intel.com"},"content":"> -----Original Message-----\n> From: Jose Ignacio Tornos Martinez <jtornosm@redhat.com>\n> Sent: Thursday, April 23, 2026 3:04 PM\n> To: netdev@vger.kernel.org\n> Cc: intel-wired-lan@lists.osuosl.org; Kitszel, Przemyslaw\n> <przemyslaw.kitszel@intel.com>; Loktionov, Aleksandr\n> <aleksandr.loktionov@intel.com>; Keller, Jacob E\n> <jacob.e.keller@intel.com>; horms@kernel.org;\n> jesse.brandeburg@intel.com; Nguyen, Anthony L\n> <anthony.l.nguyen@intel.com>; davem@davemloft.net;\n> edumazet@google.com; kuba@kernel.org; pabeni@redhat.com; Jose Ignacio\n> Tornos Martinez <jtornosm@redhat.com>\n> Subject: [PATCH net v4 1/4] iavf: return EBUSY if reset in progress or\n> not ready during MAC change\n> \n> When a MAC address change is requested while the VF is resetting or\n> still initializing, return -EBUSY immediately instead of attempting\n> the operation.\n> \n> Additionally, during early initialization states (before __IAVF_DOWN),\n> the PF may be slow to respond to MAC change requests, causing long\n> delays. Only allow MAC changes once the VF reaches __IAVF_DOWN state\n> or later, when the watchdog is running and the VF is ready for\n> operations.\n> \n> After commit ad7c7b2172c3 (\"net: hold netdev instance lock during\n> sysfs operations\"), MAC changes are called with the netdev lock held,\n> so we should not wait with the lock held during reset or\n> initialization. This allows the caller to retry or handle the busy\n> state appropriately without blocking other operations.\n> \n> Signed-off-by: Jose Ignacio Tornos Martinez <jtornosm@redhat.com>\n> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>\n> ---\n> \n>  drivers/net/ethernet/intel/iavf/iavf_main.c | 3 +++\n>  1 file changed, 3 insertions(+)\n> \n> diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c\n> b/drivers/net/ethernet/intel/iavf/iavf_main.c\n> index dad001abc908..67aa14350b1b 100644\n> --- a/drivers/net/ethernet/intel/iavf/iavf_main.c\n> +++ b/drivers/net/ethernet/intel/iavf/iavf_main.c\n> @@ -1060,6 +1060,9 @@ static int iavf_set_mac(struct net_device\n> *netdev, void *p)\n>  \tstruct sockaddr *addr = p;\n>  \tint ret;\n> \n> +\tif (iavf_is_reset_in_progress(adapter) || adapter->state <\n> __IAVF_DOWN)\n> +\t\treturn -EBUSY;\n> +\n>  \tif (!is_valid_ether_addr(addr->sa_data))\n>  \t\treturn -EADDRNOTAVAIL;\n> \n> --\n> 2.53.0\n\nReviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>","headers":{"Return-Path":"<intel-wired-lan-bounces@osuosl.org>","X-Original-To":["incoming@patchwork.ozlabs.org","intel-wired-lan@lists.osuosl.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","intel-wired-lan@lists.osuosl.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=osuosl.org header.i=@osuosl.org header.a=rsa-sha256\n header.s=default header.b=1p3nGTOl;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=osuosl.org\n (client-ip=2605:bc80:3010::138; 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