On Thu, Sep 20, 2018 at 06:38:07PM +0800, Michael Chang wrote: > On Thu, Sep 13, 2018 at 06:06:15PM -0600, Micah Parrish wrote: > > Hi, new subscriber here.? We have a problem with Grub 2 and its use of SNP > > instead of MNP.? Our UEFI driver for a network card parses the relevant DHCP > > options for iSCSI boot, generates an iBFT table, then gets closed by Grub > > when it opens the SNP interface. The driver removes the iBFT table as part > > of normal unload cleanup.? I think this should happen with the Tianocore > > UEFI reference driver as well.? The problem is often masked or does not > > occur when there are multiple network ports enabled.? It occurs with several > > different vendors NICs. > > > > Possible solutions I see: > > > > 1. Grub parses the DHCP options and creates its own iBFT. > > > > 2. Grub copies the already generated iBFT before destroying the interface. > > > > 3. Grub opens the network interface MNP instead of SNP. > > > > Although I am a neophyte at grub and UEFI development, I would like to start > > a discussion on possible solutions.? Has anyone else seen this? > > For possible solution 3, I managed to work out patch to use MNP but is not > polished, although it survived my testing. If you don't mind and willing to > give it go I will post it here as RFC patch for review.
That would be perfect. However, there are a few things worth mentioning here. The issue is never ending story. So, please look for relevant discussions in grub-devel archives and take them into account if it is possible/make sense. If you have any difficulties with finding them drop me a line. Please do not drop SNP driver. I think that we should make MNP driver a new default and SNP should stay as a backup. Just in case. Additionally, a few days ago I have started looking for people interested in the project. There are some. Hence, if you are going to take a stab at it I will ask them to do some reviews of your work. I will drop you their emails if they are happy to do so. Daniel _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
