From: Geliang Tang <tanggeliang@xxxxxxxxxx>
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@xxxxxxxxxx>
---
tools/testing/selftests/bpf/network_helpers.c | 96 +++++++++++++++++++
tools/testing/selftests/bpf/network_helpers.h | 1 +
.../selftests/bpf/prog_tests/bpf_tcp_ca.c | 81 +---------------
3 files changed, 98 insertions(+), 80 deletions(-)
diff --git a/tools/testing/selftests/bpf/network_helpers.c b/tools/testing/selftests/bpf/network_helpers.c
index 04175e16195a..137cd18ef3f2 100644
--- a/tools/testing/selftests/bpf/network_helpers.c
+++ b/tools/testing/selftests/bpf/network_helpers.c
@@ -545,3 +545,99 @@ 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;
+ }
+
+ if (bytes != a->bytes)
+ log_err("send");
+
+done:
+ if (fd >= 0)
+ close(fd);
+ if (err) {
+ WRITE_ONCE(a->stop, 1);
+ return ERR_PTR(err);
+ }
+ return NULL;
+}
+
+int 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 (err) {
+ log_err("pthread_create");
+ return err;
+ }
+
+ /* 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;
+ }
+
+ if (bytes != total_bytes) {
+ log_err("recv");
+ return -1;
+ }
+
+ WRITE_ONCE(arg.stop, 1);
+ pthread_join(srv_thread, &thread_ret);
+ if (IS_ERR(thread_ret)) {
+ log_err("thread_ret");
+ return -1;
+ }
+
+ return 0;
+}
diff --git a/tools/testing/selftests/bpf/network_helpers.h b/tools/testing/selftests/bpf/network_helpers.h
index 6457445cc6e2..70f4e4c92733 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);
+int 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..907bac46c774 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");
+ ASSERT_OK(send_recv_data(lfd, fd, total_bytes), "send_recv_data");
done:
close(lfd);
--
2.40.1
