This series introduces new statistics for af_xdp: 1. drops due to rx ring being full 2. drops due to fill ring being empty 3. failures pulling an item from the tx ring These statistics should assist users debugging and troubleshooting peformance issues and packet drops. The statistics are made available though the getsockopt and xsk_diag interfaces, and the ability to dump these extended statistics is made available in the xdpsock application via the --extra-stats or -x flag. A separate patch which will add ss/iproute2 support will follow. Ciara Loftus (3): xsk: add new statistics samples: bpf: add an option for printing extra statistics in xdpsock xsk: add xdp statistics to xsk_diag include/net/xdp_sock.h | 4 ++ include/uapi/linux/if_xdp.h | 5 +- include/uapi/linux/xdp_diag.h | 11 ++++ net/xdp/xsk.c | 36 +++++++++++-- net/xdp/xsk_buff_pool.c | 1 + net/xdp/xsk_diag.c | 17 ++++++ net/xdp/xsk_queue.h | 6 +++ samples/bpf/xdpsock_user.c | 87 ++++++++++++++++++++++++++++++- tools/include/uapi/linux/if_xdp.h | 5 +- 9 files changed, 163 insertions(+), 9 deletions(-) -- 2.17.1
