Hi! This set adds support for ethtool channel API and XDP.
I kick off with ethtool get_channels() implementation. set_channels() needs some preparations to get right. I follow the prepare/commit paradigm and allocate all resources before stopping the device. It has already been done for ndo_change_mtu and ethtool set_ringparam(), it makes sense now to consolidate all the required logic in one place. XDP support requires splitting TX rings into two classes - for the stack and for XDP. The ring structures are identical. The differences are in how they are connected to IRQ vector structs and how the completion/cleanup works. When XDP is enabled I switch from the frag allocator to page-per-packet and map buffers BIDIRECTIONALly. Last but not least XDP offload is added (the patch just takes care of the small formal differences between cls_bpf and XDP). There is a tiny & trivial DebugFS patch in the mix, I hope it can be taken via net-next provided we get acks from Christian and Nicolai. Jakub Kicinski (13): nfp: add support for ethtool .get_channels nfp: centralize runtime reconfiguration logic nfp: rename ring allocation helpers nfp: reuse ring helpers on .ndo_open() path nfp: loosen relation between rings and IRQs vectors nfp: add helper to reassign rings to IRQ vectors nfp: move RSS indirection table init into a separate function nfp: add support for ethtool .set_channels nfp: reorganize nfp_net_rx() to get packet offsets early debugfs: constify argument to debugfs_real_fops() nfp: add XDP support in the driver nfp: remove unnecessary parameters from nfp_net_bpf_offload() nfp: add support for offload of XDP programs drivers/net/ethernet/netronome/nfp/nfp_bpf.h | 1 + drivers/net/ethernet/netronome/nfp/nfp_bpf_jit.c | 92 ++- .../net/ethernet/netronome/nfp/nfp_bpf_verifier.c | 3 + drivers/net/ethernet/netronome/nfp/nfp_net.h | 30 +- .../net/ethernet/netronome/nfp/nfp_net_common.c | 892 ++++++++++++++------- .../net/ethernet/netronome/nfp/nfp_net_debugfs.c | 41 +- .../net/ethernet/netronome/nfp/nfp_net_ethtool.c | 94 +++ .../net/ethernet/netronome/nfp/nfp_net_offload.c | 7 +- include/linux/debugfs.h | 3 +- 9 files changed, 869 insertions(+), 294 deletions(-) -- 1.9.1
