Hi Max I think you should ask Intel on the e1000 mailing list Luca
Sent from my iPhone (sorry for typos) > On 08/giu/2014, at 22:37, Max Romanov <[email protected]> wrote: > > Hi, > > I have a powerful Dual Xeon server with Intel 82599-based network > card, 4 ports of which is fed by 40Gb/s of data in peak time. Of > course, not all packets are interesting and I've trying to use > hardware filtering. > > Use case: filter out all UDP (over IPv4) > > I've trying to use > > a) 5-tuple filters as described in datasheet (7.1.2.5) via the FTQF, > SDPQF, L34TIMIR, DAQF, and SAQF registers > (patching ixgbe driver, because vanilla drivers does not provide > interface for custom FTQF filters programming) - I don't find an > explicit description how to drop packet with this filter type and > configure Rx Queue field of L34TIMIR = 127 > b) Flow Director Filters > using ethtool -K ntuple on && ethtool -N flow-type udp4 action -1 > > The results was very similar for both filter types. > In both cases I've inspected the ethtool -S output and > /proc/net/pf_ring/*eth* files. > After applied filtering (any of above) the number of rx_missed_errors > become 0, but rx_no_dma_resources become non-zero. Number of lost > packets in pf_ring stat is 0. > > Questions: > 1. Why FTQF custom filters configuration is not available in 'vanilla' > ixgbe driver? > 2. Is it correct to use Rx Queue = 127 to drop the packets with FTQF? > 3. Why rx_no_dma_resources increased proportional of processed > packets? Is this indicates of any drops of interesting packets? > 4. Is it expected to get similar results? (I thought 5-tuple filters > is simpler and more productive, but less flexible). > > Please excuse me if I post the questions in a wrong mailing list - > correct mailing list address is appreciated. > > Thanks for your attention. > Max > _______________________________________________ > Ntop-misc mailing list > [email protected] > http://listgateway.unipi.it/mailman/listinfo/ntop-misc _______________________________________________ Ntop-misc mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop-misc
