On Tue, Jul 09, 2024 at 11:53:21AM -0400, Willem de Bruijn wrote: > > > + /* Due to header grow, MSS needs to be downgraded. > > + * There is BUG_ON When segment the frag_list with > > + * head_frag true so linearize skb after downgrade > > + * the MSS. > > + */ This sounds completely wrong. You should never grow the TCP header by changing gso_size. What is the usage-scenario for this? Think about it, if a router forwards a TCP packet, and ends up growing its TCP header and then splits the packet into two, then this router is brain-dead. Cheers, -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt