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Subject: Re: [Intel-wired-lan] [PATCH net v3 1/5] iavf: return EBUSY if reset in progress or not ready during MAC change X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" On 4/14/26 13:00, Jose Ignacio Tornos Martinez wrote: > When a MAC address change is requested while the VF is resetting or still > initializing, return -EBUSY immediately instead of attempting the > operation. > > Additionally, during early initialization states (before __IAVF_DOWN), > the PF may be slow to respond to MAC change requests, causing long > delays. Only allow MAC changes once the VF reaches __IAVF_DOWN state or > later, when the watchdog is running and the VF is ready for operations. > > After commit ad7c7b2172c3 ("net: hold netdev instance lock > during sysfs operations"), MAC changes are called with the netdev lock > held, so we should not wait with the lock held during reset or > initialization. This allows the caller to retry or handle the busy state > appropriately without blocking other operations. that makes sense, but that could break user scripts, OTOH, with netdev lock taken here, user could be blocked forever, so I think this is a net positive change, Reviewed-by: Przemek Kitszel > > Signed-off-by: Jose Ignacio Tornos Martinez > > drivers/net/ethernet/intel/iavf/iavf_main.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c > index dad001abc908..67aa14350b1b 100644 > --- a/drivers/net/ethernet/intel/iavf/iavf_main.c > +++ b/drivers/net/ethernet/intel/iavf/iavf_main.c > @@ -1060,6 +1060,9 @@ static int iavf_set_mac(struct net_device *netdev, void *p) > struct sockaddr *addr = p; > int ret; > > + if (iavf_is_reset_in_progress(adapter) || adapter->state < __IAVF_DOWN) > + return -EBUSY; > + > if (!is_valid_ether_addr(addr->sa_data)) > return -EADDRNOTAVAIL; >