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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2021 Facebook */
#include <test_progs.h>
#include <netinet/tcp.h>
#include "sockopt_qos_to_cc.skel.h"
static void run_setsockopt_test(int cg_fd, int sock_fd)
{
socklen_t optlen;
char cc[16]; /* TCP_CA_NAME_MAX */
int buf;
int err = -1;
buf = 0x2D;
err = setsockopt(sock_fd, SOL_IPV6, IPV6_TCLASS, &buf, sizeof(buf));
if (!ASSERT_OK(err, "setsockopt(sock_fd, IPV6_TCLASS)"))
return;
/* Verify the setsockopt cc change */
optlen = sizeof(cc);
err = getsockopt(sock_fd, SOL_TCP, TCP_CONGESTION, cc, &optlen);
if (!ASSERT_OK(err, "getsockopt(sock_fd, TCP_CONGESTION)"))
return;
if (!ASSERT_STREQ(cc, "reno", "getsockopt(sock_fd, TCP_CONGESTION)"))
return;
}
void test_sockopt_qos_to_cc(void)
{
struct sockopt_qos_to_cc *skel;
char cc_cubic[16] = "cubic"; /* TCP_CA_NAME_MAX */
int cg_fd = -1;
int sock_fd = -1;
int err;
cg_fd = test__join_cgroup("/sockopt_qos_to_cc");
if (!ASSERT_GE(cg_fd, 0, "cg-join(sockopt_qos_to_cc)"))
return;
skel = sockopt_qos_to_cc__open_and_load();
if (!ASSERT_OK_PTR(skel, "skel"))
goto done;
skel->bss->page_size = sysconf(_SC_PAGESIZE);
sock_fd = socket(AF_INET6, SOCK_STREAM, 0);
if (!ASSERT_GE(sock_fd, 0, "v6 socket open"))
goto done;
err = setsockopt(sock_fd, SOL_TCP, TCP_CONGESTION, &cc_cubic,
sizeof(cc_cubic));
if (!ASSERT_OK(err, "setsockopt(sock_fd, TCP_CONGESTION)"))
goto done;
skel->links.sockopt_qos_to_cc =
bpf_program__attach_cgroup(skel->progs.sockopt_qos_to_cc,
cg_fd);
if (!ASSERT_OK_PTR(skel->links.sockopt_qos_to_cc,
"prog_attach(sockopt_qos_to_cc)"))
goto done;
run_setsockopt_test(cg_fd, sock_fd);
done:
if (sock_fd != -1)
close(sock_fd);
if (cg_fd != -1)
close(cg_fd);
/* destroy can take null and error pointer */
sockopt_qos_to_cc__destroy(skel);
}
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