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Alan Maguire 0c4ea7f87a bpf: test_tc_tunnel.sh needs reverse path filtering disabled 
test_tc_tunnel.sh sets up a pair of namespaces connected by a
veth pair to verify encap/decap using bpf_skb_adjust_room.  In
testing this, it uses tunnel links as the peer of the bpf-based
encap/decap.  However because the same IP header is used for inner
and outer IP, when packets arrive at the tunnel interface they will
be dropped by reverse path filtering as those packets are expected
on the veth interface (where the destination IP of the decapped
packet is configured).

To avoid this, ensure reverse path filtering is disabled for the
namespace using tunneling.

Fixes: 98cdabcd07 ("selftests/bpf: bpf tunnel encap test")
Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-03-25 15:01:54 +01:00
arch
block
certs
crypto
Documentation
drivers net: isdn: Make isdn_ppp_mp_discard and isdn_ppp_mp_reassembly static 2019-03-20 12:25:59 -07:00
fs
include bpf: add bpf_skb_adjust_room encap flags 2019-03-22 13:52:45 -07:00
init
ipc
kernel bpf: add skc_lookup_tcp helper 2019-03-21 18:59:10 -07:00
lib
LICENSES
mm
net bpf: silence uninitialized var warning in bpf_skb_net_grow 2019-03-24 15:31:57 -07:00
samples samples: bpf: add xdp_sample_pkts to .gitignore 2019-03-21 19:35:36 -07:00
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tools bpf: test_tc_tunnel.sh needs reverse path filtering disabled 2019-03-25 15:01:54 +01:00
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README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.