Hi Ferruh, > -----Original Message----- > From: Yigit, Ferruh > Sent: Friday, September 15, 2017 2:33 AM > To: Hu, Jiayu <jiayu...@intel.com>; dev@dpdk.org > Cc: Ananyev, Konstantin <konstantin.anan...@intel.com>; Kavanagh, Mark > B <mark.b.kavan...@intel.com>; Tan, Jianfeng <jianfeng....@intel.com> > Subject: Re: [dpdk-dev] [PATCH v3 1/5] gso: add Generic Segmentation > Offload API framework > > On 9/12/2017 3:43 AM, Jiayu Hu wrote: > > Generic Segmentation Offload (GSO) is a SW technique to split large > > packets into small ones. Akin to TSO, GSO enables applications to > > operate on large packets, thus reducing per-packet processing overhead. > > > > To enable more flexibility to applications, DPDK GSO is implemented > > as a standalone library. Applications explicitly use the GSO library > > to segment packets. This patch introduces the GSO API framework to DPDK. > > > > The GSO library provides a segmentation API, rte_gso_segment(), for > > applications. It splits an input packet into small ones in each > > invocation. The GSO library refers to these small packets generated > > by rte_gso_segment() as GSO segments. Each of the newly-created GSO > > segments is organized as a two-segment MBUF, where the first segment is > a > > standard MBUF, which stores a copy of packet header, and the second is an > > indirect MBUF which points to a section of data in the input packet. > > rte_gso_segment() reduces the refcnt of the input packet by 1. Therefore, > > when all GSO segments are freed, the input packet is freed automatically. > > Additionally, since each GSO segment has multiple MBUFs (i.e. 2 MBUFs), > > the driver of the interface which the GSO segments are sent to should > > support to transmit multi-segment packets. > > > > Signed-off-by: Jiayu Hu <jiayu...@intel.com> > > Signed-off-by: Mark Kavanagh <mark.b.kavan...@intel.com> > > --- > > config/common_base | 5 ++ > > lib/Makefile | 2 + > > lib/librte_gso/Makefile | 49 ++++++++++++++ > > lib/librte_gso/rte_gso.c | 50 ++++++++++++++ > > lib/librte_gso/rte_gso.h | 133 > +++++++++++++++++++++++++++++++++++++ > > lib/librte_gso/rte_gso_version.map | 7 ++ > > mk/rte.app.mk | 1 + > > Can you please update documentation for new library: > > - library documentation "doc/guides/prog_guide/xxx.rst" > - api documentation: doc/api/doxy-api.conf, doc/api/doxy-api-index.md > - release notes update to announce new library > - release notes, "Shared Library Versions" section with new library.
Thanks for your reminder. I will update them sooner. Jiayu > > <...>
