Messages in this thread | | | From | Naruto Nguyen <> | Date | Mon, 25 Sep 2023 20:57:11 +1000 | Subject | Re: Small MSS in vmxnet3 |
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Hello, could you please let me know any ideas?
Thank you, Kind regards, Bao
On Sat, 23 Sept 2023 at 12:12, Naruto Nguyen <narutonguyen2018@gmail.com> wrote: > > Hello everyone, > > Recently I found that packets sent from vmxnet3 driver on guest have > MSS value set to very small size, some 10 bytes, some 25 bytes MSS. > The vmxnet3 NIC enables TSO. Could you let me know any possible reason > that the packets are fragmented with very small MSS.and is it normal?. > Any way to avoid this small MSS or it's just normal. > > In addition, when enabling debug for vmxnet3, in function > vmxnet3_tq_xmit, it has a printout > > netdev_dbg(adapter->netdev, > "txd[%u]: SOP 0x%Lx 0x%x 0x%x\n", > (u32)(ctx.sop_txd - > tq->tx_ring.base), le64_to_cpu(gdesc->txd.addr), > le32_to_cpu(gdesc->dword[2]), le32_to_cpu(gdesc->dword[3])); > > could you suggest an easier way to extract the MSS value from this output? > > Thanks, > Kind regards, Naruto
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