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 v1: https://lkml.org/lkml/2019/5/23/795 Also regular tests with iperf2 were done in order to verify impact on regular netstack performance, compared with base commit: https://pastebin.com/JSMT0iZ4 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 Based on net-next/master Ilias Apalodimas (2): net: page_pool: add helper function to retrieve dma addresses net: page_pool: add helper function to unmap dma addresses Ivan Khoronzhuk (5): net: ethernet: ti: cpsw: use cpsw as drv data net: ethernet: ti: cpsw_ethtool: simplify slave loops net: ethernet: ti: davinci_cpdma: add dma mapped submit net: ethernet: ti: davinci_cpdma: return handler status net: ethernet: ti: cpsw: add XDP support drivers/net/ethernet/ti/Kconfig | 1 + drivers/net/ethernet/ti/cpsw.c | 537 ++++++++++++++++++++---- drivers/net/ethernet/ti/cpsw_ethtool.c | 136 +++++- drivers/net/ethernet/ti/cpsw_priv.h | 12 +- drivers/net/ethernet/ti/davinci_cpdma.c | 122 ++++-- drivers/net/ethernet/ti/davinci_cpdma.h | 6 +- drivers/net/ethernet/ti/davinci_emac.c | 18 +- include/net/page_pool.h | 6 + net/core/page_pool.c | 7 + 9 files changed, 710 insertions(+), 135 deletions(-) -- 2.17.1
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