lkml.org 
[lkml]   [2020]   [Jun]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH net-next v2] af-packet: new flag to indicate all csums are good
    On Tue, 2 Jun 2020 21:22:11 +0200 Victor Julien wrote:
    > - receiver uses nfp (netronome) driver: TP_STATUS_CSUM_VALID set for
    > every packet, including the bad TCP ones
    > - receiver uses ixgbe driver: TP_STATUS_CSUM_VALID not set for the bad
    > packets.
    >
    > Again purely based on 'git grep' it seems nfp does not support
    > UNNECESSARY, while ixgbe does.
    >
    > (my original testing was with the nfp only, so now I at least understand
    > my original thinking)

    FWIW nfp defaults to CHECKSUM_COMPLETE if the device supports it (see
    if you have RXCSUM_COMPLETE in the probe logs). It supports UNNECESSARY
    as well, but IDK if there is a way to choose the preferred checksum
    types in the stack :( You'd have to edit the driver and remove the
    NFP_NET_CFG_CTRL_CSUM_COMPLETE from the NFP_NET_CFG_CTRL_RXCSUM_ANY
    mask to switch to using UNNECESSARY.

    \
     
     \ /
      Last update: 2020-06-02 21:31    [W:2.978 / U:0.084 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site