selftests/bpf: Extend sockmap_redir to test no-redir SK_DROP/SK_PASS #5901
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try_recv() was meant to support both @expect_success cases, but all the callers use @expect_success=false anyway. Drop the unused logic and fold in MSG_DONTWAIT. Adapt callers. Subtle change here: recv() return value of 0 will also be considered (an unexpected) success. Signed-off-by: Michal Luczaj <[email protected]> Reviewed-by: Jakub Sitnicki <[email protected]>
In some test cases, OOB packets might have been left unread. Flush them out and introduce additional checks. Signed-off-by: Michal Luczaj <[email protected]>
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Preparatory patch before adding SK_PASS/SK_DROP support:
test_redir() => test_sockets()
test_socket() => test_redir()
test_send_redir_recv() => test_send_recv()
After the change (and the following patch) the call stack will be:
serial_test_sockmap_redir
test_map
test_sockets
test_redir
test_send_recv
(test_verdict)
(test_send_recv)
Signed-off-by: Michal Luczaj <[email protected]>
Preparatory patch before adding SK_PASS/SK_DROP support: allow to
dynamically switch BPF program's redirect_type. This way, after setting up
for a redirection, test can make the BPF program skip the actual
bpf_{sk,msg}_redirect_{map,hash} part and return a specified verdict.
Signed-off-by: Michal Luczaj <[email protected]>
Add tests that make the BPF programs skip the actual redirect and immediately return SK_DROP/SK_PASS. Suggested-by: Jiayuan Chen <[email protected]> Signed-off-by: Michal Luczaj <[email protected]>
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Pull request for series with
subject: selftests/bpf: Extend sockmap_redir to test no-redir SK_DROP/SK_PASS
version: 1
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=999303