Hi! This set makes it possible to test ice driver with test suite that xdpxceiver provides. In order to do it, device needs to be turned on to loopback mode, so in first patch knob is introduced that allows user to toggle loopback mode. Furthermore, ethtool's loopback test is fixed for ice (patch 2 and 3). Besides turning device into loopback mode, I was limiting queue count to 1, so that none of the steering filters are needed. Rest of the work is related to xdpxceiver. Currently it is assumed that underlying device supports native XDP. It is true for veth, but might not be for other device that might be used with xdpxceiver once this patch set land. So, patch 4 adds a logic to find out if underlying device supports XDP so that TEST_MODE_DRV can be used for test suite. Patch 5 restores close() on netns fd that was removed by accident. In patch 6, default Rx pkt stream is added so physical device testing will be able to use shared UMEM in a way that Tx will utilize first half of buffer space and Rx second one. Then, patch 7 adds support for running xdpxceiver on physical devices. Patch 8 and 9 prepares xdpxceiver to address ZC drivers that clean lazily Tx descriptors (and therefore produce XSK descs to CQ) so that pacing algorithm works fine. Patch 10 finally adds new TEST_MODE_ZC for testing zero copy AF_XDP driver support. This work already allowed us to spot and fix two bugs in AF_XDP kernel side ([0], [1]). [0]: https://lore.kernel.org/bpf/20220425153745.481322-1-maciej.fijalkowski@xxxxxxxxx/ [1]: https://lore.kernel.org/bpf/20220607142200.576735-1-maciej.fijalkowski@xxxxxxxxx/ Thank you. Maciej Fijalkowski (10): ice: introduce priv-flag for toggling loopback mode ice: check DD bit on Rx descriptor rather than (EOP | RS) ice: do not setup vlan for loopback VSI selftests: xsk: query for native XDP support selftests: xsk: add missing close() on netns fd selftests: xsk: introduce default Rx pkt stream selftests: xsk: add support for executing tests on physical device selftests: xsk: rely on pkts_in_flight in wait_for_tx_completion() selftests: xsk: remove struct xsk_socket_info::outstanding_tx selftests: xsk: add support for zero copy testing drivers/net/ethernet/intel/ice/ice.h | 1 + drivers/net/ethernet/intel/ice/ice_ethtool.c | 19 +- drivers/net/ethernet/intel/ice/ice_main.c | 8 +- tools/testing/selftests/bpf/test_xsk.sh | 52 ++- tools/testing/selftests/bpf/xdpxceiver.c | 404 +++++++++++++------ tools/testing/selftests/bpf/xdpxceiver.h | 10 +- 6 files changed, 352 insertions(+), 142 deletions(-) -- 2.27.0
