On Sun, May 3, 2020 at 11:30 PM Yonghong Song <yhs@xxxxxx> wrote: > > Two bpf programs are added in this patch for netlink and ipv6_route > target. On my VM, I am able to achieve identical > results compared to /proc/net/netlink and /proc/net/ipv6_route. > > $ cat /proc/net/netlink > sk Eth Pid Groups Rmem Wmem Dump Locks Drops Inode > 000000002c42d58b 0 0 00000000 0 0 0 2 0 7 > 00000000a4e8b5e1 0 1 00000551 0 0 0 2 0 18719 > 00000000e1b1c195 4 0 00000000 0 0 0 2 0 16422 > 000000007e6b29f9 6 0 00000000 0 0 0 2 0 16424 > .... > 00000000159a170d 15 1862 00000002 0 0 0 2 0 1886 > 000000009aca4bc9 15 3918224839 00000002 0 0 0 2 0 19076 > 00000000d0ab31d2 15 1 00000002 0 0 0 2 0 18683 > 000000008398fb08 16 0 00000000 0 0 0 2 0 27 > $ cat /sys/fs/bpf/my_netlink > sk Eth Pid Groups Rmem Wmem Dump Locks Drops Inode > 000000002c42d58b 0 0 00000000 0 0 0 2 0 7 > 00000000a4e8b5e1 0 1 00000551 0 0 0 2 0 18719 > 00000000e1b1c195 4 0 00000000 0 0 0 2 0 16422 > 000000007e6b29f9 6 0 00000000 0 0 0 2 0 16424 > .... > 00000000159a170d 15 1862 00000002 0 0 0 2 0 1886 > 000000009aca4bc9 15 3918224839 00000002 0 0 0 2 0 19076 > 00000000d0ab31d2 15 1 00000002 0 0 0 2 0 18683 > 000000008398fb08 16 0 00000000 0 0 0 2 0 27 > > $ cat /proc/net/ipv6_route > fe800000000000000000000000000000 40 00000000000000000000000000000000 00 00000000000000000000000000000000 00000100 00000001 00000000 00000001 eth0 > 00000000000000000000000000000000 00 00000000000000000000000000000000 00 00000000000000000000000000000000 ffffffff 00000001 00000000 00200200 lo > 00000000000000000000000000000001 80 00000000000000000000000000000000 00 00000000000000000000000000000000 00000000 00000003 00000000 80200001 lo > fe80000000000000c04b03fffe7827ce 80 00000000000000000000000000000000 00 00000000000000000000000000000000 00000000 00000002 00000000 80200001 eth0 > ff000000000000000000000000000000 08 00000000000000000000000000000000 00 00000000000000000000000000000000 00000100 00000003 00000000 00000001 eth0 > 00000000000000000000000000000000 00 00000000000000000000000000000000 00 00000000000000000000000000000000 ffffffff 00000001 00000000 00200200 lo > $ cat /sys/fs/bpf/my_ipv6_route > fe800000000000000000000000000000 40 00000000000000000000000000000000 00 00000000000000000000000000000000 00000100 00000001 00000000 00000001 eth0 > 00000000000000000000000000000000 00 00000000000000000000000000000000 00 00000000000000000000000000000000 ffffffff 00000001 00000000 00200200 lo > 00000000000000000000000000000001 80 00000000000000000000000000000000 00 00000000000000000000000000000000 00000000 00000003 00000000 80200001 lo > fe80000000000000c04b03fffe7827ce 80 00000000000000000000000000000000 00 00000000000000000000000000000000 00000000 00000002 00000000 80200001 eth0 > ff000000000000000000000000000000 08 00000000000000000000000000000000 00 00000000000000000000000000000000 00000100 00000003 00000000 00000001 eth0 > 00000000000000000000000000000000 00 00000000000000000000000000000000 00 00000000000000000000000000000000 ffffffff 00000001 00000000 00200200 lo > > Signed-off-by: Yonghong Song <yhs@xxxxxx> > --- Just realized, this is only BPF programs, right? It would be good to have at least minimal user-space program that would verify and load it. Otherwise we'll be just testing compilation and it might "bit rot" a bit... > .../selftests/bpf/progs/bpf_iter_ipv6_route.c | 63 ++++++++++++++++ > .../selftests/bpf/progs/bpf_iter_netlink.c | 74 +++++++++++++++++++ > 2 files changed, 137 insertions(+) > create mode 100644 tools/testing/selftests/bpf/progs/bpf_iter_ipv6_route.c > create mode 100644 tools/testing/selftests/bpf/progs/bpf_iter_netlink.c > [...]
