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| author |   Sowmini Varadhan <sowmini.varadhan@oracle.com> | 2018-11-07 16:12:02 -0800 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2018-11-09 09:40:17 +0100 |
| commit | 435f90a338ae42c0d7c0109a1742d1b16bc99bf6 (patch) | |
| tree | d9b8382a1b809c45809135400fdeda9d9fe51be9 /tools/bpf | |
| parent | bpf: add perf event notificaton support for sock_ops (diff) | |
| download | wireguard-linux-435f90a338ae42c0d7c0109a1742d1b16bc99bf6.tar.xz wireguard-linux-435f90a338ae42c0d7c0109a1742d1b16bc99bf6.zip | |
selftests/bpf: add a test case for sock_ops perf-event notification
This patch provides a tcp_bpf based eBPF sample. The test
- ncat(1) as the TCP client program to connect() to a port
with the intention of triggerring SYN retransmissions: we
first install an iptables DROP rule to make sure ncat SYNs are
resent (instead of aborting instantly after a TCP RST)
- has a bpf kernel module that sends a perf-event notification for
each TCP retransmit, and also tracks the number of such notifications
sent in the global_map
The test passes when the number of event notifications intercepted
in user-space matches the value in the global_map.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'tools/bpf')
0 files changed, 0 insertions, 0 deletions