> From: [email protected] [mailto:netdev- > [email protected]] On Behalf Of Björn Töpel > Sent: Tuesday, February 12, 2019 12:52 AM > To: [email protected] > Cc: Topel, Bjorn <[email protected]>; Karlsson, Magnus > <[email protected]>; [email protected]; > [email protected]; Sokolowski, Jan <[email protected]> > Subject: [PATCH 2/2] i40e: add tracking of AF_XDP ZC state for each queue > pair > > From: Björn Töpel <[email protected]> > > In commit f3fef2b6e1cc ("i40e: Remove umem from VSI") a regression was > introduced; When the VSI was reset, the setup code would try to enable > AF_XDP ZC unconditionally (as long as there was a umem placed in the > netdev._rx struct). Here, we add a bitmap to the VSI that tracks if a > certain queue pair has been "zero-copy enabled" via the ndo_bpf. The > bitmap is used in i40e_xsk_umem, and enables zero-copy if and only if > XDP is enabled, the corresponding qid in the bitmap is set and the > umem is non-NULL. > > Fixes: f3fef2b6e1cc ("i40e: Remove umem from VSI") > Signed-off-by: Björn Töpel <[email protected]> > --- > drivers/net/ethernet/intel/i40e/i40e.h | 2 ++ > drivers/net/ethernet/intel/i40e/i40e_main.c | 10 +++++++++- > drivers/net/ethernet/intel/i40e/i40e_xsk.c | 3 +++ > 3 files changed, 14 insertions(+), 1 deletion(-) >
Tested-by: Aaron Brown <[email protected]>
