From: Jason Xing <kerneljasonxing@xxxxxxxxx> Date: Tue, 31 Jan 2023 19:23:59 +0800 > On Tue, Jan 31, 2023 at 7:08 PM Alexander Lobakin > <alexandr.lobakin@xxxxxxxxx> wrote: [...] >>>> You said in this thread that you've done several tests - what were they? >>> >>> Tests against XDP are running on the server side when MTU varies from >>> 1500 to 3050 (not including ETH_HLEN, ETH_FCS_LEN and VLAN_HLEN) for a >> > >> BTW, if ixgbe allows you to set MTU of 3050, it needs to be fixed. Intel >> drivers at some point didn't include the second VLAN tag into account, > > Yes, I noticed that. > > It should be like "int new_frame_size = new_mtu + ETH_HLEN + > ETH_FCS_LEN + (VLAN_HLEN * 2)" instead of only one VLAN_HLEN, which is > used to compute real size in ixgbe_change_mtu() function. > I'm wondering if I could submit another patch to fix the issue you > mentioned because the current patch tells a different issue. Does it > make sense? Yes, please send as a separate patch. It's somewhat related to the topic, but better to keep commits atomic. > > If you're available, please help me review the v3 patch I've already > sent to the mailing-list. Thanks anyway. > The Link is https://lore.kernel.org/lkml/20230131032357.34029-1-kerneljasonxing@xxxxxxxxx/ > . > > Thanks, > Jason Thanks, Olek
