On Thu, 15 Apr 2021 11:21:45 +0200 Kurt Kanzenbach <k...@linutronix.de> wrote:
> When using native XDP with the igb driver, the XDP frame data doesn't point to > the beginning of the packet. It's off by 16 bytes. Everything works as > expected > with XDP skb mode. > > Actually these 16 bytes are used to store the packet timestamps. Therefore, > pull > the timestamp before executing any XDP operations and adjust all other code > accordingly. The igc driver does it like that as well. > > Tested with Intel i210 card and AF_XDP sockets. Doesn't the i210 card use the igc driver? This change is for igb driver. > Fixes: 9cbc948b5a20 ("igb: add XDP support") > Signed-off-by: Kurt Kanzenbach <k...@linutronix.de> > --- [...] > > drivers/net/ethernet/intel/igb/igb.h | 3 +- > drivers/net/ethernet/intel/igb/igb_main.c | 46 ++++++++++++----------- > drivers/net/ethernet/intel/igb/igb_ptp.c | 21 ++++------- > 3 files changed, 33 insertions(+), 37 deletions(-) -- Best regards, Jesper Dangaard Brouer MSc.CS, Principal Kernel Engineer at Red Hat LinkedIn: http://www.linkedin.com/in/brouer