Re: [PATCH net-next v3 4/9] net: devmem: add a per-device netmem TX frag size limit
From: Jakub Kicinski
Date: Tue Nov 10 2026 - 17:36:31 EST
On Thu, 5 Nov 2026 14:20:53 -0800 Stanislav Fomichev wrote:
> Devmem TX frags are bounded only by the net_iov size, which is about
> to grow up to 2MB, more than some devices can describe in a single TX
> descriptor.
How is this different than normal zerocopy Tx?
Drivers already have to deal with long frags.
Having partially applicable limit seems like a bad idea.