netdev - [bpf-next PATCH 0/7] sockmap sample updates

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Message-ID: <20180108180302.13647.13866.stgit@john-Precision-Tower-5810>
Date:   Mon, 08 Jan 2018 10:04:50 -0800
From:   John Fastabend <john.fastabend@...il.com>
To:     john.fastabend@...il.com, ast@...nel.org, daniel@...earbox.net
Cc:     netdev@...r.kernel.org
Subject: [bpf-next PATCH 0/7] sockmap sample updates 

The sockmap sample is pretty simple at the moment. All it does is open
a few sockets attach BPF programs/sockmaps and sends a few packets.

However, for testing and debugging I wanted to have more control over
the sendmsg format and data than provided by tools like iperf3/netperf,
etc. The reason is for testing BPF programs and stream parser it is
helpful to be able submit multiple sendmsg calls with different msg
layouts. For example lots of 1B iovs or a single large MB of data, etc.

Additionally, my current test setup requires an entire orchestration
layer (cilium) to run. As well as lighttpd and http traffic generators
or for kafka testing brokers and clients. This makes it a bit more
difficult when doing performance optimizations to incrementally test
small changes and come up with performance delta's and perf numbers.

By adding a few more options and an additional few tests the sockmap
sample program can show a more complete example and do some of the
above. Because the sample program is self contained it doesn't require
additional infrastructure to run either.

This series, although still fairly crude, does provide some nice
additions. They are

  - a new sendmsg tests with a sender and recv threads
  - a new base tests so we can get metrics/data without BPF
  - multiple GBps of throughput on base and sendmsg tests
  - automatically set rlimit and common variables

That said the UI is still primitive, more features could be added,
more tests might be useful, the reporting could be better, etc. But,
IMO lets push this now rather than sit on it for weeks until I get
time to do the above improvements.

---

John Fastabend (7):
      bpf: refactor sockmap sample program update for arg parsing
      bpf: add sendmsg option for testing BPF programs
      bpf: sockmap sample, use fork() for send and recv
      bpf: sockmap sample, report bytes/sec
      bpf: sockmap sample add base test without any BPF for comparison
      bpf: sockmap put client sockets in blocking mode
      bpf: sockmap set rlimit

 samples/sockmap/sockmap_user.  |    0 
 samples/sockmap/sockmap_user.c |  354 +++++++++++++++++++++++++++++++++++-----
 2 files changed, 314 insertions(+), 40 deletions(-)
 create mode 100644 samples/sockmap/sockmap_user.

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