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Author SHA1 Message Date
Jesper Dangaard Brouer
91a8e78a12 Introduce parameter --remove 
Need an easy way to move the setup again.

Signed-off-by: Jesper Dangaard Brouer <netoptimizer@brouer.com>
 2020-11-08 13:14:42 +01:00
Jesper Dangaard Brouer
72d3bba6d9 Make use of the params variables limit listing filter setup 
Signed-off-by: Jesper Dangaard Brouer <netoptimizer@brouer.com>
 2020-11-08 13:14:27 +01:00
Jesper Dangaard Brouer
35ffcec7c3 Add common parameters.sh for shell cmdline arguments 
Signed-off-by: Jesper Dangaard Brouer <netoptimizer@brouer.com>
 2020-11-08 12:46:26 +01:00
Jesper Dangaard Brouer
f8546bbbce Add shell script for easier loading TC BPF egress program 
Signed-off-by: Jesper Dangaard Brouer <netoptimizer@brouer.com>
 2020-11-08 12:18:08 +01:00
Jesper Dangaard Brouer
984faedafb Copy shell 'tc' helper functions from netoptimizer/network-testing 
Taken from:
 https://github.com/netoptimizer/network-testing/blob/master/tc/functions.sh

Signed-off-by: Jesper Dangaard Brouer <netoptimizer@brouer.com>
 2020-11-08 11:49:04 +01:00
Jesper Dangaard Brouer
3ef00744da Add edt_pacer01 only containing dummy tc program. 
Want to make sure make system works and I can test load this prog.

Signed-off-by: Jesper Dangaard Brouer <netoptimizer@brouer.com>
 2020-11-08 11:48:51 +01:00
Jesper Dangaard Brouer
f4846b8297 Start traffic-pacing-edt example 
Signed-off-by: Jesper Dangaard Brouer <netoptimizer@brouer.com>
 2020-11-08 11:31:55 +01:00
Jesper Dangaard Brouer
bf1c03c959 Merge pull request #1 from netoptimizer/MTU-tests01.public 
MTU testing

Simple TC-BPF program for testing different packets sizes that violate the MTU of the interface.

This is part of testing upstream kernel work, for removing the MTU limit in the BPF-helpers that change packet size, and instead add BPF-helper that can check or lookup interface MTU.
 2020-10-15 16:37:14 +02:00
Jesper Dangaard Brouer
f2a13d942f MTU-tests: Cycle through different MTU packet sizes 
Encode this statically via C/BPF-code switch statement, and
have global counter cycles through these.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
 2020-10-13 22:10:28 +02:00
Jesper Dangaard Brouer
7c2badedd4 MTU-tests: Fix stripping object file from .BTF section 
Shot myself in the foot with stripping ELF obj file.
This was the reason I could not load BPF program with TC.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
 2020-10-13 17:08:42 +02:00
Jesper Dangaard Brouer
78788141e4 MTU-tests: Use map as counter 
This doesn't work.  It compiles, but loading with tc breaks.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
 2020-10-13 16:25:03 +02:00
Jesper Dangaard Brouer
cbb2da1d05 MTU-tests: Loading via tc seems not to support global vars 
This code only works because LLVM optimize it as a constant.
As soon at I try to use it as variable it breaks.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
 2020-10-13 15:58:15 +02:00
Jesper Dangaard Brouer
bfc08deedd MTU-tests: Add README 
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
 2020-10-13 15:37:05 +02:00
Jesper Dangaard Brouer
4f8b36e569 MTU-tests: iproute2 'tc' tool doesn't understand BTF debug info 
It still works when loading, but results in a huge warning
which is really annoying.

Add a Makefile hack to strip the object file.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
 2020-10-13 15:35:08 +02:00
Jesper Dangaard Brouer
5f3898ca61 MTU-tests: Add encap header after adjusting pkt room 
This makes it easier to see/decode packets via tcpdump.

Borrowing part of ../encap-forward/encap.h.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
 2020-10-13 15:34:50 +02:00
Jesper Dangaard Brouer
00eaf20fae MTU-tests: Add tc_bpf program that increase packet size 
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
 2020-10-13 15:34:37 +02:00
Jesper Dangaard Brouer
74bde6b32c MTU-tests: Add new MTU-tests directory and Makefile 
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
 2020-10-13 15:04:22 +02:00
Toke Høiland-Jørgensen
40706ad9fa lsm-nobpf: Check for presence of BPF LSM before loading 
If the BPF LSM is compiled-in but not enabled, the loading of the BPF
program will succeed, but it won't actually do anything. Detect this
and abort rather than silently not working.

Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
 2020-10-12 16:53:24 +02:00
Toke Høiland-Jørgensen
54259af20a Add bpf-nolsm example for disabling bpf() 
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
 2020-10-12 14:58:41 +02:00
Toke Høiland-Jørgensen
71e076b08c encap-forward: Use fib lookup + bpf_redirect() and bpf_redirect_neigh() 
Only for IPv4, and requires bpf-next + a modification to bpf_fib_lookup()
to work.

Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
 2020-10-08 16:56:07 +02:00
Toke Høiland-Jørgensen
9bbedb4709 encap-forward: Add README describing the issue 
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
 2020-10-07 14:39:09 +02:00
Toke Høiland-Jørgensen
bc91d4d456 encap-forward: Support conditional IPv6 encapsulation with IPV6=1 
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
 2020-10-07 13:35:38 +02:00
Toke Høiland-Jørgensen
061bb5026c encap-forward: new proposed helper for setting skb source valid 
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
 2020-10-06 17:14:07 +02:00
Toke Høiland-Jørgensen
e08a4e085d lib/testenv: Don't get iface MAC address before we need it 
Resolves a race condition where the MAC can change

Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
 2020-10-06 17:13:44 +02:00
Toke Høiland-Jørgensen
cbaa0704ab encap-forward: Run ping and tcpdump as part of test setup 
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
 2020-10-06 16:10:25 +02:00
Toke Høiland-Jørgensen
a2dec68e1e encap-forward: Change SKB packet type 
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
 2020-10-06 16:06:45 +02:00
Toke Høiland-Jørgensen
b7544155f7 Add lib/Makefile 
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
 2020-10-06 15:59:44 +02:00
Toke Høiland-Jørgensen
4513664ca3 Initial import with encap-forward example 
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
 2020-10-06 15:53:55 +02:00