linux.git/samples/bpf, branch v4.18-rc4

bpf: Change bpf_fib_lookup to return lookup status

2018-06-28T22:02:02+00:00

For ACLs implemented using either FIB rules or FIB entries, the BPF
program needs the FIB lookup status to be able to drop the packet.
Since the bpf_fib_lookup API has not reached a released kernel yet,
change the return code to contain an encoding of the FIB lookup
result and return the nexthop device index in the params struct.

In addition, inform the BPF program of any post FIB lookup reason as
to why the packet needs to go up the stack.

The fib result for unicast routes must have an egress device, so remove
the check that it is non-NULL.

Signed-off-by: David Ahern 
Signed-off-by: Daniel Borkmann

samples/bpf: xdpsock: use skb Tx path for XDP_SKB

2018-06-05T13:48:57+00:00

Make sure that XDP_SKB also uses the skb Tx path.

Signed-off-by: Björn Töpel 
Signed-off-by: Daniel Borkmann

samples/bpf: minor *_nb_free performance fix

2018-06-04T15:21:02+00:00

Signed-off-by: Magnus Karlsson 
Signed-off-by: Daniel Borkmann

samples/bpf: adapted to new uapi

2018-06-04T15:21:02+00:00

Here, the xdpsock sample application is adjusted to the new descriptor
format.

Signed-off-by: Björn Töpel 
Signed-off-by: Daniel Borkmann

bpf: flowlabel in bpf_fib_lookup should be flowinfo

2018-06-04T01:29:07+00:00

As Michal noted the flow struct takes both the flow label and priority.
Update the bpf_fib_lookup API to note that it is flowinfo and not just
the flow label.

Cc: Michal Kubecek 
Signed-off-by: David Ahern 
Signed-off-by: Alexei Starovoitov

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

2018-05-25T02:20:51+00:00

Alexei Starovoitov says:

====================
pull-request: bpf-next 2018-05-24

The following pull-request contains BPF updates for your *net-next* tree.

The main changes are:

1) Björn Töpel cleans up AF_XDP (removes rebind, explicit cache alignment from uapi, etc).

2) David Ahern adds mtu checks to bpf_ipv{4,6}_fib_lookup() helpers.

3) Jesper Dangaard Brouer adds bulking support to ndo_xdp_xmit.

4) Jiong Wang adds support for indirect and arithmetic shifts to NFP

5) Martin KaFai Lau cleans up BTF uapi and makes the btf_header extensible.

6) Mathieu Xhonneux adds an End.BPF action to seg6local with BPF helpers allowing
   to edit/grow/shrink a SRH and apply on a packet generic SRv6 actions.

7) Sandipan Das adds support for bpf2bpf function calls in ppc64 JIT.

8) Yonghong Song adds BPF_TASK_FD_QUERY command for introspection of tracing events.

9) other misc fixes from Gustavo A. R. Silva, Sirio Balmelli, John Fastabend, and Magnus Karlsson
====================

Signed-off-by: David S. Miller

samples/bpf: xdp_monitor use err code from tracepoint xdp:xdp_devmap_xmit

2018-05-25T01:36:15+00:00

Update xdp_monitor to use the recently added err code introduced
in tracepoint xdp:xdp_devmap_xmit, to show if the drop count is
caused by some driver general delivery problem.  Other kind of drops
will likely just be more normal TX space issues.

Signed-off-by: Jesper Dangaard Brouer 
Signed-off-by: Alexei Starovoitov

samples/bpf: xdp_monitor use tracepoint xdp:xdp_devmap_xmit

2018-05-25T01:36:15+00:00

The xdp_monitor sample/tool is updated to use the new tracepoint
xdp:xdp_devmap_xmit the previous patch just introduced.

Signed-off-by: Jesper Dangaard Brouer 
Signed-off-by: Alexei Starovoitov

samples/bpf: add a samples/bpf test for BPF_TASK_FD_QUERY

2018-05-25T01:18:20+00:00

This is mostly to test kprobe/uprobe which needs kernel headers.

Signed-off-by: Yonghong Song 
Signed-off-by: Alexei Starovoitov

samples/bpf: adapt xdpsock to the new uapi

2018-05-22T08:25:06+00:00

Adapt xdpsock to use the new getsockopt introduced in the previous
commit.

Signed-off-by: Björn Töpel 
Signed-off-by: Daniel Borkmann