This patchset contains several improvements for af_xdp socket umem mappings for 32bit systems. Also, there is one more patch outside of this series that on linux-next tree and related to mmap2 af_xdp umem offsets: "mm: mmap: increase sockets maximum memory size pgoff for 32bits" https://lkml.org/lkml/2019/8/12/549 Based on bpf-next/master Prev: https://lkml.org/lkml/2019/8/13/437 v2..v1: - replaced "libbpf: add asm/unistd.h to xsk to get __NR_mmap2" on "libbpf: use LFS (_FILE_OFFSET_BITS) instead of direct mmap2 syscall" - use vmap along with page_address to avoid overkill - define mmap syscall trace5 for mmap if defined Ivan Khoronzhuk (3): libbpf: use LFS (_FILE_OFFSET_BITS) instead of direct mmap2 syscall xdp: xdp_umem: replace kmap on vmap for umem map samples: bpf: syscal_nrs: use mmap2 if defined net/xdp/xdp_umem.c | 36 +++++++++++++++++++++++----- samples/bpf/syscall_nrs.c | 6 +++++ samples/bpf/tracex5_kern.c | 13 ++++++++++ tools/lib/bpf/Makefile | 1 + tools/lib/bpf/xsk.c | 49 +++++++++++--------------------------- 5 files changed, 64 insertions(+), 41 deletions(-) -- 2.17.1
