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  1. 25 Jun, 2015 1 commit
    • Mike Frysinger's avatar
      enable transparent LFS · 232aaf4f
      Mike Frysinger authored 
      Make sure we use 64-bit filesystem functions everywhere.  This applies not
only to being able to read large files (which generally doesn't apply to
us), but also being able to simply stat them (as they might be using large
inodes).
Signed-off-by: default avatarMike Frysinger <vapier@chromium.org>
      232aaf4f
  3. 28 May, 2015 2 commits
  5. 27 May, 2015 2 commits
  7. 21 May, 2015 14 commits
  9. 14 May, 2015 1 commit
  11. 11 May, 2015 7 commits
  13. 07 May, 2015 4 commits
    • Stephen Hemminger's avatar
      ip: fix exit code for addrlabel · 906cafe3
      Stephen Hemminger authored 
      The exit code for ip label was not correct.
The return from the command function is negated and turned into
the exit code on failure.
      906cafe3
    • Stephen Hemminger's avatar
      ip: fix exit code for rule failures · 076ae708
      Stephen Hemminger authored 
      If ip rule command fails talking to kernel, exit code should be 2.
The sub-command is called by cmd loop and the exit code is negative
of return value from the command callback.
      076ae708
    • Stephen Hemminger's avatar
      ip: return correct exit code on route failure · d58ba4ba
      Stephen Hemminger authored 
      If kernel complains about ip route request, exit status should be
2 not 1.

This fixes regression introduced by:
commit 42ecedd4
Author: Roopa Prabhu <roopa@cumulusnetworks.com>
Date:   Tue Mar 17 19:26:32 2015 -0700

    fix ip -force -batch to continue on errors
      d58ba4ba
    • Stephen Hemminger's avatar
      ip: document exit code · ce743da1
      Stephen Hemminger authored 
      The ip command has always had a consistent exit status
document it so that developers see it.
      ce743da1
  15. 04 May, 2015 6 commits
  17. 29 Apr, 2015 1 commit
  19. 27 Apr, 2015 2 commits
    • Daniel Borkmann's avatar
      examples: bpf: fix ld offs to have same prog loaded on ingress/egress · 279d6a8b
      Daniel Borkmann authored 
      Fix up the eBPF example program to match our kernel fix in a166151cbe33 ("bpf:
fix bpf helpers to use skb->mac_header relative offsets"). Tested on ingress
and egress paths.
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: default avatarAlexei Starovoitov <ast@plumgrid.com>
      279d6a8b
    • Daniel Borkmann's avatar
      tc: built-in eBPF exec proxy · 4bd62446
      Daniel Borkmann authored 
      This work follows upon commit 6256f8c9 ("tc, bpf: finalize eBPF
support for cls and act front-end") and takes up the idea proposed by
Hannes Frederic Sowa to spawn a shell (or any other command) that holds
generated eBPF map file descriptors.

File descriptors, based on their id, are being fetched from the same
unix domain socket as demonstrated in the bpf_agent, the shell spawned
via execvpe(2) and the map fds passed over the environment, and thus
are made available to applications in the fashion of std{in,out,err}
for read/write access, for example in case of iproute2's examples/bpf/:

  # env | grep BPF
  BPF_NUM_MAPS=3
  BPF_MAP1=6        <- BPF_MAP_ID_QUEUE (id 1)
  BPF_MAP0=5        <- BPF_MAP_ID_PROTO (id 0)
  BPF_MAP2=7        <- BPF_MAP_ID_DROPS (id 2)

  # ls -la /proc/self/fd
  [...]
  lrwx------. 1 root root 64 Apr 14 16:46 0 -> /dev/pts/4
  lrwx------. 1 root root 64 Apr 14 16:46 1 -> /dev/pts/4
  lrwx------. 1 root root 64 Apr 14 16:46 2 -> /dev/pts/4
  [...]
  lrwx------. 1 root root 64 Apr 14 16:46 5 -> anon_inode:bpf-map
  lrwx------. 1 root root 64 Apr 14 16:46 6 -> anon_inode:bpf-map
  lrwx------. 1 root root 64 Apr 14 16:46 7 -> anon_inode:bpf-map

The advantage (as opposed to the direct/native usage) is that now the
shell is map fd owner and applications can terminate and easily reattach
to descriptors w/o any kernel changes. Moreover, multiple applications
can easily read/write eBPF maps simultaneously.

To further allow users for experimenting with that, next step is to add
a small helper that can get along with simple data types, so that also
shell scripts can make use of bpf syscall, f.e to read/write into maps.

Generally, this allows for prepopulating maps, or any runtime altering
which could influence eBPF program behaviour (f.e. different run-time
classifications, skb modifications, ...), dumping of statistics, etc.

Reference: http://thread.gmane.org/gmane.linux.network/357471/focus=357860Suggested-by: default avatarHannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Reviewed-by: default avatarHannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: default avatarAlexei Starovoitov <ast@plumgrid.com>
      4bd62446
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