From: Geliang Tang tanggeliang@kylinos.cn
This patch extracts the code to send and receive data into a new helper named send_recv_data() in network_helpers.c and export it in network_helpers.h.
This helper will be used for MPTCP BPF selftests.
Signed-off-by: Geliang Tang tanggeliang@kylinos.cn --- tools/testing/selftests/bpf/network_helpers.c | 85 +++++++++++++++++++ tools/testing/selftests/bpf/network_helpers.h | 1 + .../selftests/bpf/prog_tests/bpf_tcp_ca.c | 81 +----------------- 3 files changed, 87 insertions(+), 80 deletions(-)
diff --git a/tools/testing/selftests/bpf/network_helpers.c b/tools/testing/selftests/bpf/network_helpers.c index 04175e16195a..e17d19f88a36 100644 --- a/tools/testing/selftests/bpf/network_helpers.c +++ b/tools/testing/selftests/bpf/network_helpers.c @@ -545,3 +545,88 @@ int set_hw_ring_size(char *ifname, struct ethtool_ringparam *ring_param) close(sockfd); return 0; } + +struct send_recv_arg { + int fd; + uint32_t bytes; + int stop; +}; + +static void *send_recv_server(void *arg) +{ + struct send_recv_arg *a = (struct send_recv_arg *)arg; + ssize_t nr_sent = 0, bytes = 0; + char batch[1500]; + int err = 0, fd; + + fd = accept(a->fd, NULL, NULL); + while (fd == -1) { + if (errno == EINTR) + continue; + err = -errno; + goto done; + } + + if (settimeo(fd, 0)) { + err = -errno; + goto done; + } + + while (bytes < a->bytes && !READ_ONCE(a->stop)) { + nr_sent = send(fd, &batch, + MIN(a->bytes - bytes, sizeof(batch)), 0); + if (nr_sent == -1 && errno == EINTR) + continue; + if (nr_sent == -1) { + err = -errno; + break; + } + bytes += nr_sent; + } + + ASSERT_EQ(bytes, a->bytes, "send"); + +done: + if (fd >= 0) + close(fd); + if (err) { + WRITE_ONCE(a->stop, 1); + return ERR_PTR(err); + } + return NULL; +} + +void send_recv_data(int lfd, int fd, uint32_t total_bytes) +{ + ssize_t nr_recv = 0, bytes = 0; + struct send_recv_arg arg = { + .fd = lfd, + .bytes = total_bytes, + .stop = 0, + }; + pthread_t srv_thread; + void *thread_ret; + char batch[1500]; + int err; + + err = pthread_create(&srv_thread, NULL, send_recv_server, (void *)&arg); + if (!ASSERT_OK(err, "pthread_create")) + return; + + /* recv total_bytes */ + while (bytes < total_bytes && !READ_ONCE(arg.stop)) { + nr_recv = recv(fd, &batch, + MIN(total_bytes - bytes, sizeof(batch)), 0); + if (nr_recv == -1 && errno == EINTR) + continue; + if (nr_recv == -1) + break; + bytes += nr_recv; + } + + ASSERT_EQ(bytes, total_bytes, "recv"); + + WRITE_ONCE(arg.stop, 1); + pthread_join(srv_thread, &thread_ret); + ASSERT_OK(IS_ERR(thread_ret), "thread_ret"); +} diff --git a/tools/testing/selftests/bpf/network_helpers.h b/tools/testing/selftests/bpf/network_helpers.h index 6457445cc6e2..5172f0b7bf6e 100644 --- a/tools/testing/selftests/bpf/network_helpers.h +++ b/tools/testing/selftests/bpf/network_helpers.h @@ -76,6 +76,7 @@ struct nstoken; */ struct nstoken *open_netns(const char *name); void close_netns(struct nstoken *token); +void send_recv_data(int lfd, int fd, uint32_t total_bytes);
static __u16 csum_fold(__u32 csum) { diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c b/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c index 64f172f02a9a..3f822100c2b3 100644 --- a/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c +++ b/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c @@ -33,75 +33,15 @@ static int settcpca(int fd, const char *tcp_ca) return 0; }
-struct send_recv_arg { - int fd; - uint32_t bytes; - int stop; -}; - -static void *server(void *arg) -{ - struct send_recv_arg *a = (struct send_recv_arg *)arg; - ssize_t nr_sent = 0, bytes = 0; - char batch[1500]; - int err = 0, fd; - - fd = accept(a->fd, NULL, NULL); - while (fd == -1) { - if (errno == EINTR) - continue; - err = -errno; - goto done; - } - - if (settimeo(fd, 0)) { - err = -errno; - goto done; - } - - while (bytes < a->bytes && !READ_ONCE(a->stop)) { - nr_sent = send(fd, &batch, - MIN(a->bytes - bytes, sizeof(batch)), 0); - if (nr_sent == -1 && errno == EINTR) - continue; - if (nr_sent == -1) { - err = -errno; - break; - } - bytes += nr_sent; - } - - ASSERT_EQ(bytes, a->bytes, "send"); - -done: - if (fd >= 0) - close(fd); - if (err) { - WRITE_ONCE(a->stop, 1); - return ERR_PTR(err); - } - return NULL; -} - static void do_test(const char *tcp_ca, const struct bpf_map *sk_stg_map) { - ssize_t nr_recv = 0, bytes = 0; - struct send_recv_arg arg = { - .bytes = total_bytes, - .stop = 0, - }; int lfd = -1, fd = -1; - pthread_t srv_thread; - void *thread_ret; - char batch[1500]; int err;
lfd = start_server(AF_INET6, SOCK_STREAM, NULL, 0, 0); if (!ASSERT_NEQ(lfd, -1, "socket")) return;
- arg.fd = lfd; - fd = socket(AF_INET6, SOCK_STREAM, 0); if (!ASSERT_NEQ(fd, -1, "socket")) { close(lfd); @@ -133,26 +73,7 @@ static void do_test(const char *tcp_ca, const struct bpf_map *sk_stg_map) goto done; }
- err = pthread_create(&srv_thread, NULL, server, (void *)&arg); - if (!ASSERT_OK(err, "pthread_create")) - goto done; - - /* recv total_bytes */ - while (bytes < total_bytes && !READ_ONCE(arg.stop)) { - nr_recv = recv(fd, &batch, - MIN(total_bytes - bytes, sizeof(batch)), 0); - if (nr_recv == -1 && errno == EINTR) - continue; - if (nr_recv == -1) - break; - bytes += nr_recv; - } - - ASSERT_EQ(bytes, total_bytes, "recv"); - - WRITE_ONCE(arg.stop, 1); - pthread_join(srv_thread, &thread_ret); - ASSERT_OK(IS_ERR(thread_ret), "thread_ret"); + send_recv_data(lfd, fd, total_bytes);
done: close(lfd);