Thank you so much! I interested in ZC version because it could work on wire speed and offload features are explicit in this case.
I will test offload feature asap ;) On Thursday, April 2, 2015, Alfredo Cardigliano <cardigli...@ntop.org> wrote: > Hi Pavel > pf_ring with standard drivers provides information about checksum offload > when enabled, > please take a look at pfring_pkthdr.extended_hdr.flags > > #define PKT_FLAGS_CHECKSUM_OFFLOAD 1 << 0 /* IP/TCP checksum offload > enabled */ > #define PKT_FLAGS_CHECKSUM_OK 1 << 1 /* Valid checksum (with IP/TCP > checksum offload enabled) */ > > We will add support for this also to ZC ASAP. > > Alfredo > > On 02 Apr 2015, at 08:28, Pavel Odintsov <pavel.odint...@gmail.com > <javascript:_e(%7B%7D,'cvml','pavel.odint...@gmail.com');>> wrote: > > Hello, folks! > > I'm working on user space tcp/ip implementation now. I have modern network > cards with many types of hardware offload. I interested in tcp and ip > checksumm validation/generation. But I could not find any flags in pfring > parsed packet header about succsess or fail in checksumm validation. But > checksumm offliad is definitely working and I coukd see counter values in > network card stats. > > Nic offload features provide huge performance benefits and will be fine if > you provide code and examples fir they. > > Thank you for your attention! > > > -- > Sincerely yours, Pavel Odintsov > _______________________________________________ > Ntop-misc mailing list > Ntop-misc@listgateway.unipi.it > <javascript:_e(%7B%7D,'cvml','Ntop-misc@listgateway.unipi.it');> > http://listgateway.unipi.it/mailman/listinfo/ntop-misc > > > -- Sincerely yours, Pavel Odintsov
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