This is the first usage of the new bpf_prog ID. It is for reporting the ID of a xdp_prog through netlink.
It rides on the existing IFLA_XDP. This patch adds IFLA_XDP_PROG_ID for the bpf_prog ID reporting. It starts with changing the generic_xdp first. After that, the hardware driver is changed one by one. Jakub Kicinski mentioned that he will soon introduce XDP_ATTACHED_HW (on top of the existing XDP_ATTACHED_DRV and XDP_ATTACHED_SKB) and he is going to reuse the prog_attached for this purpose. Hence, this patch set keeps the prog_attached even though !!prog_id also implies there is xdp_prog attached. I have tested with generic_xdp, mlx4 and mlx5. v3: 1. Replace 'if' by '?' when checking the xdp_prog pointer as suggested by Jakub Kicinski (thanks!) v2: 1. Remove READ_ONCE since it is alredy under rtnl lock 2. Keep prog_attached in 'struct netdev_xdp' as requested by Jakub Kicinski. The existing prog_attached and the new prog_id are put under a struct for XDP_QUERY_PROG. Martin KaFai Lau (9): net: Add IFLA_XDP_PROG_ID bpf: mlx4: Report bpf_prog ID during XDP_QUERY_PROG bpf: mlx5e: Report bpf_prog ID during XDP_QUERY_PROG bpf: virtio_net: Report bpf_prog ID during XDP_QUERY_PROG bpf: bnxt: Report bpf_prog ID during XDP_QUERY_PROG bpf: thunderx: Report bpf_prog ID during XDP_QUERY_PROG bpf: ixgbe: Report bpf_prog ID during XDP_QUERY_PROG bpf: nfp: Report bpf_prog ID during XDP_QUERY_PROG bpf: qede: Report bpf_prog ID during XDP_QUERY_PROG drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 1 + drivers/net/ethernet/cavium/thunder/nicvf_main.c | 1 + drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 ++ drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 21 ++++++++++++++--- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 15 +++++++++--- .../net/ethernet/netronome/nfp/nfp_net_common.c | 1 + drivers/net/ethernet/qlogic/qede/qede_filter.c | 1 + drivers/net/virtio_net.c | 13 +++++++---- include/linux/netdevice.h | 7 ++++-- include/uapi/linux/if_link.h | 1 + net/core/dev.c | 19 ++++++++------- net/core/rtnetlink.c | 27 +++++++++++++++++----- 12 files changed, 82 insertions(+), 27 deletions(-) -- 2.9.3
