This patchset adds XDP support for TI cpsw driver and base it on page_pool allocator. It was verified on af_xdp socket drop, af_xdp l2f, ebpf XDP_DROP, XDP_REDIRECT, XDP_PASS, XDP_TX. It was verified with following configs enabled: CONFIG_JIT=y CONFIG_BPFILTER=y CONFIG_BPF_SYSCALL=y CONFIG_XDP_SOCKETS=y CONFIG_BPF_EVENTS=y CONFIG_HAVE_EBPF_JIT=y CONFIG_BPF_JIT=y CONFIG_CGROUP_BPF=y Link on previous v5: https://lkml.org/lkml/2019/6/30/89 Also regular tests with iperf2 were done in order to verify impact on regular netstack performance, compared with base commit: https://pastebin.com/JSMT0iZ4 v5..v6: - do changes that is rx_dev while redirect/flush cycle is kept the same - dropped net: ethernet: ti: davinci_cpdma: return handler status - other changes desc in patches v4..v5: - added two plreliminary patches: net: ethernet: ti: davinci_cpdma: allow desc split while down net: ethernet: ti: cpsw_ethtool: allow res split while down - added xdp alocator refcnt on xdp level, avoiding page pool refcnt - moved flush status as separate argument for cpdma_chan_process - reworked cpsw code according to last changes to allocator - added missed statistic counter v3..v4: - added page pool user counter - use same pool for ndevs in dual mac - restructured page pool create/destroy according to the last changes in API v2..v3: - each rxq and ndev has its own page pool v1..v2: - combined xdp_xmit functions - used page allocation w/o refcnt juggle - unmapped page for skb netstack - moved rxq/page pool allocation to open/close pair - added several preliminary patches: net: page_pool: add helper function to retrieve dma addresses net: page_pool: add helper function to unmap dma addresses net: ethernet: ti: cpsw: use cpsw as drv data net: ethernet: ti: cpsw_ethtool: simplify slave loops Ivan Khoronzhuk (5): xdp: allow same allocator usage net: ethernet: ti: davinci_cpdma: add dma mapped submit net: ethernet: ti: davinci_cpdma: allow desc split while down net: ethernet: ti: cpsw_ethtool: allow res split while down net: ethernet: ti: cpsw: add XDP support drivers/net/ethernet/ti/Kconfig | 1 + drivers/net/ethernet/ti/cpsw.c | 485 +++++++++++++++++++++--- drivers/net/ethernet/ti/cpsw_ethtool.c | 76 +++- drivers/net/ethernet/ti/cpsw_priv.h | 7 + drivers/net/ethernet/ti/davinci_cpdma.c | 99 ++++- drivers/net/ethernet/ti/davinci_cpdma.h | 7 +- include/net/xdp_priv.h | 2 + net/core/xdp.c | 55 +++ 8 files changed, 656 insertions(+), 76 deletions(-) -- 2.17.1
