#include "bpf_tcp_nogpl.skel.h"
#include "bpf_dctcp_release.skel.h"
#include "tcp_ca_write_sk_pacing.skel.h"
+#include "tcp_ca_incompl_cong_ops.skel.h"
#ifndef ENOTSUPP
#define ENOTSUPP 524
tcp_ca_write_sk_pacing__destroy(skel);
}
+static void test_incompl_cong_ops(void)
+{
+ struct tcp_ca_incompl_cong_ops *skel;
+ struct bpf_link *link;
+
+ skel = tcp_ca_incompl_cong_ops__open_and_load();
+ if (!ASSERT_OK_PTR(skel, "open_and_load"))
+ return;
+
+ /* That cong_avoid() and cong_control() are missing is only reported at
+ * this point:
+ */
+ link = bpf_map__attach_struct_ops(skel->maps.incompl_cong_ops);
+ ASSERT_ERR_PTR(link, "attach_struct_ops");
+
+ bpf_link__destroy(link);
+ tcp_ca_incompl_cong_ops__destroy(skel);
+}
+
void test_bpf_tcp_ca(void)
{
if (test__start_subtest("dctcp"))
test_rel_setsockopt();
if (test__start_subtest("write_sk_pacing"))
test_write_sk_pacing();
+ if (test__start_subtest("incompl_cong_ops"))
+ test_incompl_cong_ops();
}
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+
+#include "vmlinux.h"
+
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+char _license[] SEC("license") = "GPL";
+
+static inline struct tcp_sock *tcp_sk(const struct sock *sk)
+{
+ return (struct tcp_sock *)sk;
+}
+
+SEC("struct_ops/incompl_cong_ops_ssthresh")
+__u32 BPF_PROG(incompl_cong_ops_ssthresh, struct sock *sk)
+{
+ return tcp_sk(sk)->snd_ssthresh;
+}
+
+SEC("struct_ops/incompl_cong_ops_undo_cwnd")
+__u32 BPF_PROG(incompl_cong_ops_undo_cwnd, struct sock *sk)
+{
+ return tcp_sk(sk)->snd_cwnd;
+}
+
+SEC(".struct_ops")
+struct tcp_congestion_ops incompl_cong_ops = {
+ /* Intentionally leaving out any of the required cong_avoid() and
+ * cong_control() here.
+ */
+ .ssthresh = (void *)incompl_cong_ops_ssthresh,
+ .undo_cwnd = (void *)incompl_cong_ops_undo_cwnd,
+ .name = "bpf_incompl_ops",
+};