linux.git/tools/testing/selftests/bpf/test_maps.c, branch v4.14

bpf: enforce TCP only support for sockmap

2017-10-20T12:01:29+00:00

Only TCP sockets have been tested and at the moment the state change
callback only handles TCP sockets. This adds a check to ensure that
sockets actually being added are TCP sockets.

For net-next we can consider UDP support.

Signed-off-by: John Fastabend 
Acked-by: Daniel Borkmann 
Acked-by: Alexei Starovoitov 
Signed-off-by: David S. Miller

bpf: add support for sockmap detach programs

2017-09-09T04:11:00+00:00

The bpf map sockmap supports adding programs via attach commands. This
patch adds the detach command to keep the API symmetric and allow
users to remove previously added programs. Otherwise the user would
have to delete the map and re-add it to get in this state.

This also adds a series of additional tests to capture detach operation
and also attaching/detaching invalid prog types.

API note: socks will run (or not run) programs depending on the state
of the map at the time the sock is added. We do not for example walk
the map and remove programs from previously attached socks.

Acked-by: Daniel Borkmann 
Signed-off-by: John Fastabend 
Acked-by: Alexei Starovoitov 
Signed-off-by: David S. Miller

bpf: test_maps: fix typos, "conenct" and "listeen"

2017-08-30T22:32:16+00:00

Trivial fix to typos in printf error messages:
"conenct" -> "connect"
"listeen" -> "listen"

thanks to Daniel Borkmann for spotting one of these mistakes

Signed-off-by: Colin Ian King 
Acked-by: John Fastabend 
Acked-by: Daniel Borkmann 
Acked-by: Shuah Khan 
Signed-off-by: David S. Miller

bpf: test_maps add sockmap stress test

2017-08-28T18:13:22+00:00

Sockmap is a bit different than normal stress tests that can run
in parallel as is. We need to reuse the same socket pool and map
pool to get good stress test cases.

Signed-off-by: John Fastabend 
Signed-off-by: David S. Miller

bpf: harden sockmap program attach to ensure correct map type

2017-08-28T18:13:22+00:00

When attaching a program to sockmap we need to check map type
is correct.

Fixes: 174a79ff9515 ("bpf: sockmap with sk redirect support")
Signed-off-by: John Fastabend 
Acked-by: Alexei Starovoitov 
Signed-off-by: David S. Miller

bpf: additional sockmap self tests

2017-08-28T18:13:21+00:00

Add some more sockmap tests to cover,

 - forwarding to NULL entries
 - more than two maps to test list ops
 - forwarding to different map

Signed-off-by: John Fastabend 
Acked-by: Alexei Starovoitov 
Signed-off-by: David S. Miller

bpf: convert sockmap field attach_bpf_fd2 to type

2017-08-28T18:13:21+00:00

In the initial sockmap API we provided strparser and verdict programs
using a single attach command by extending the attach API with a the
attach_bpf_fd2 field.

However, if we add other programs in the future we will be adding a
field for every new possible type, attach_bpf_fd(3,4,..). This
seems a bit clumsy for an API. So lets push the programs using two
new type fields.

   BPF_SK_SKB_STREAM_PARSER
   BPF_SK_SKB_STREAM_VERDICT

This has the advantage of having a readable name and can easily be
extended in the future.

Updates to samples and sockmap included here also generalize tests
slightly to support upcoming patch for multiple map support.

Signed-off-by: John Fastabend 
Fixes: 174a79ff9515 ("bpf: sockmap with sk redirect support")
Suggested-by: Alexei Starovoitov 
Acked-by: Alexei Starovoitov 
Signed-off-by: David S. Miller

bpf: selftests add sockmap tests

2017-08-16T18:27:53+00:00

This generates a set of sockets, attaches BPF programs, and sends some
simple traffic using basic send/recv pattern. Additionally, we do a bunch
of negative tests to ensure adding/removing socks out of the sockmap fail
correctly.

Signed-off-by: John Fastabend 
Signed-off-by: David S. Miller

bpf: testing: fix devmap tests

2017-07-29T21:13:20+00:00

Apparently through one of my revisions of the initial patches
series I lost the devmap test. We can add more testing later but
for now lets fix the simple one we have.

Fixes: 546ac1ffb70d "bpf: add devmap, a map for storing net device references"
Reported-by: Jakub Kicinski 
Signed-off-by: John Fastabend 
Acked-by: Daniel Borkmann 
Signed-off-by: David S. Miller

bpf: add devmap, a map for storing net device references

2017-07-17T16:48:06+00:00

Device map (devmap) is a BPF map, primarily useful for networking
applications, that uses a key to lookup a reference to a netdevice.

The map provides a clean way for BPF programs to build virtual port
to physical port maps. Additionally, it provides a scoping function
for the redirect action itself allowing multiple optimizations. Future
patches will leverage the map to provide batching at the XDP layer.

Another optimization/feature, that is not yet implemented, would be
to support multiple netdevices per key to support efficient multicast
and broadcast support.

Signed-off-by: John Fastabend 
Acked-by: Daniel Borkmann 
Acked-by: Jesper Dangaard Brouer 
Signed-off-by: David S. Miller