Re: [dpdk-dev] [PATCH 1/2] vhost: fix TCP csum not set

2017-07-01 Thread Yuanhan Liu
On Wed, Jun 07, 2017 at 09:25:38PM +0200, Maxime Coquelin wrote: > > > On 06/07/2017 08:41 AM, Jianfeng Tan wrote: > >As PKT_TX_TCP_SEG flag in mbuf->ol_flags implies PKT_TX_TCP_CKSUM, > >applications, e.g., testpmd, don't set PKT_TX_TCP_CKSUM when TSO > >is set. > > > >This leads to that packets

Re: [dpdk-dev] [PATCH 1/2] vhost: fix TCP csum not set

2017-06-07 Thread Maxime Coquelin
On 06/07/2017 08:41 AM, Jianfeng Tan wrote: As PKT_TX_TCP_SEG flag in mbuf->ol_flags implies PKT_TX_TCP_CKSUM, applications, e.g., testpmd, don't set PKT_TX_TCP_CKSUM when TSO is set. This leads to that packets get dropped in VM tcp stack layer because of bad TCP csum. To fix this, we make su