On 4/29/20 8:11 PM, Jakub Sitnicki wrote:
This series enables BPF programs to fetch sockets from SOCKMAP/SOCKHASH by
doing a map lookup, as proposed during virtual BPF conference.
Patch 1 description covers changes on verifier side needed to make it work.
Fetched socket can be inspected or passed to helpers such as bpf_sk_assign,
which is demonstrated by the test updated in patch 3.
Thanks,
Jakub
Jakub Sitnicki (3):
bpf: Allow bpf_map_lookup_elem for SOCKMAP and SOCKHASH
selftests/bpf: Test that lookup on SOCKMAP/SOCKHASH is allowed
selftests/bpf: Use SOCKMAP for server sockets in bpf_sk_assign test
kernel/bpf/verifier.c | 45 +++++++---
net/core/filter.c | 4 +
net/core/sock_map.c | 18 +++-
tools/testing/selftests/bpf/Makefile | 2 +-
.../selftests/bpf/prog_tests/sk_assign.c | 21 ++++-
.../selftests/bpf/progs/test_sk_assign.c | 82 ++++++++-----------
.../bpf/verifier/prevent_map_lookup.c | 30 -------
tools/testing/selftests/bpf/verifier/sock.c | 70 ++++++++++++++++
8 files changed, 178 insertions(+), 94 deletions(-)
Applied, thanks!
