On 7/7/25 8:50 AM, Jordan Rife wrote:
Prepare for bucket resume tests for established TCP sockets by creating
a program to immediately destroy and remove sockets from the TCP ehash
table, since close() is not deterministic.
Signed-off-by: Jordan Rife <jordan@xxxxxxxx>
---
.../selftests/bpf/progs/sock_iter_batch.c | 22 +++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/tools/testing/selftests/bpf/progs/sock_iter_batch.c b/tools/testing/selftests/bpf/progs/sock_iter_batch.c
index a36361e4a5de..14513aa77800 100644
--- a/tools/testing/selftests/bpf/progs/sock_iter_batch.c
+++ b/tools/testing/selftests/bpf/progs/sock_iter_batch.c
@@ -70,6 +70,28 @@ int iter_tcp_soreuse(struct bpf_iter__tcp *ctx)
return 0;
}
+int bpf_sock_destroy(struct sock_common *sk) __ksym;
A nit.
The kfunc declaration should be already in the vmlinux.h, so this line is no
longer needed. The bpf CI has the new pahole for this.
+volatile const __u64 destroy_cookie;
+
+SEC("iter/tcp")
+int iter_tcp_destroy(struct bpf_iter__tcp *ctx)
+{
+ struct sock_common *sk_common = (struct sock_common *)ctx->sk_common;
+ __u64 sock_cookie;
+
+ if (!sk_common)
+ return 0;
+
+ sock_cookie = bpf_get_socket_cookie(sk_common);
+ if (sock_cookie != destroy_cookie)
+ return 0;
+
+ bpf_sock_destroy(sk_common);
+ bpf_seq_write(ctx->meta->seq, &sock_cookie, sizeof(sock_cookie));
+
+ return 0;
+}
+
#define udp_sk(ptr) container_of(ptr, struct udp_sock, inet.sk)
SEC("iter/udp")
