> From: netdev-ow...@vger.kernel.org [mailto:netdev- > ow...@vger.kernel.org] On Behalf Of Björn Töpel > Sent: Tuesday, February 12, 2019 12:52 AM > To: intel-wired-...@lists.osuosl.org > Cc: Topel, Bjorn <bjorn.to...@intel.com>; Karlsson, Magnus > <magnus.karls...@intel.com>; magnus.karls...@gmail.com; > netdev@vger.kernel.org; Sokolowski, Jan <jan.sokolow...@intel.com> > Subject: [PATCH 2/2] i40e: add tracking of AF_XDP ZC state for each queue > pair > > From: Björn Töpel <bjorn.to...@intel.com> > > 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 <bjorn.to...@intel.com> > --- > 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 <aaron.f.br...@intel.com>
