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-rw-r--r--tools/testing/selftests/net/.gitignore5
-rw-r--r--tools/testing/selftests/net/Makefile5
-rw-r--r--tools/testing/selftests/net/bind_bhash.c144
-rwxr-xr-xtools/testing/selftests/net/bind_bhash.sh66
-rw-r--r--tools/testing/selftests/net/sk_bind_sendto_listen.c80
-rw-r--r--tools/testing/selftests/net/sk_connect_zero_addr.c62
6 files changed, 361 insertions, 1 deletions
diff --git a/tools/testing/selftests/net/.gitignore b/tools/testing/selftests/net/.gitignore
index 0e5751af6247..bec5cf96984c 100644
--- a/tools/testing/selftests/net/.gitignore
+++ b/tools/testing/selftests/net/.gitignore
@@ -39,4 +39,7 @@ toeplitz
tun
cmsg_sender
unix_connect
-tap \ No newline at end of file
+tap
+bind_bhash
+sk_bind_sendto_listen
+sk_connect_zero_addr
diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
index 11a288b67e2f..e6a951ba5ba0 100644
--- a/tools/testing/selftests/net/Makefile
+++ b/tools/testing/selftests/net/Makefile
@@ -43,6 +43,7 @@ TEST_PROGS += ndisc_unsolicited_na_test.sh
TEST_PROGS += arp_ndisc_untracked_subnets.sh
TEST_PROGS += stress_reuseport_listen.sh
TEST_PROGS := l2_tos_ttl_inherit.sh
+TEST_PROGS += bind_bhash.sh
TEST_PROGS_EXTENDED := in_netns.sh setup_loopback.sh setup_veth.sh
TEST_PROGS_EXTENDED += toeplitz_client.sh toeplitz.sh
TEST_GEN_FILES = socket nettest
@@ -64,6 +65,9 @@ TEST_GEN_FILES += cmsg_sender
TEST_GEN_FILES += stress_reuseport_listen
TEST_PROGS += test_vxlan_vnifiltering.sh
TEST_GEN_FILES += io_uring_zerocopy_tx
+TEST_GEN_FILES += bind_bhash
+TEST_GEN_PROGS += sk_bind_sendto_listen
+TEST_GEN_PROGS += sk_connect_zero_addr
TEST_FILES := settings
@@ -74,3 +78,4 @@ include bpf/Makefile
$(OUTPUT)/reuseport_bpf_numa: LDLIBS += -lnuma
$(OUTPUT)/tcp_mmap: LDLIBS += -lpthread
$(OUTPUT)/tcp_inq: LDLIBS += -lpthread
+$(OUTPUT)/bind_bhash: LDLIBS += -lpthread
diff --git a/tools/testing/selftests/net/bind_bhash.c b/tools/testing/selftests/net/bind_bhash.c
new file mode 100644
index 000000000000..57ff67a3751e
--- /dev/null
+++ b/tools/testing/selftests/net/bind_bhash.c
@@ -0,0 +1,144 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * This times how long it takes to bind to a port when the port already
+ * has multiple sockets in its bhash table.
+ *
+ * In the setup(), we populate the port's bhash table with
+ * MAX_THREADS * MAX_CONNECTIONS number of entries.
+ */
+
+#include <unistd.h>
+#include <stdio.h>
+#include <netdb.h>
+#include <pthread.h>
+#include <string.h>
+#include <stdbool.h>
+
+#define MAX_THREADS 600
+#define MAX_CONNECTIONS 40
+
+static const char *setup_addr_v6 = "::1";
+static const char *setup_addr_v4 = "127.0.0.1";
+static const char *setup_addr;
+static const char *bind_addr;
+static const char *port;
+bool use_v6;
+int ret;
+
+static int fd_array[MAX_THREADS][MAX_CONNECTIONS];
+
+static int bind_socket(int opt, const char *addr)
+{
+ struct addrinfo *res, hint = {};
+ int sock_fd, reuse = 1, err;
+ int domain = use_v6 ? AF_INET6 : AF_INET;
+
+ sock_fd = socket(domain, SOCK_STREAM, 0);
+ if (sock_fd < 0) {
+ perror("socket fd err");
+ return sock_fd;
+ }
+
+ hint.ai_family = domain;
+ hint.ai_socktype = SOCK_STREAM;
+
+ err = getaddrinfo(addr, port, &hint, &res);
+ if (err) {
+ perror("getaddrinfo failed");
+ goto cleanup;
+ }
+
+ if (opt) {
+ err = setsockopt(sock_fd, SOL_SOCKET, opt, &reuse, sizeof(reuse));
+ if (err) {
+ perror("setsockopt failed");
+ goto cleanup;
+ }
+ }
+
+ err = bind(sock_fd, res->ai_addr, res->ai_addrlen);
+ if (err) {
+ perror("failed to bind to port");
+ goto cleanup;
+ }
+
+ return sock_fd;
+
+cleanup:
+ close(sock_fd);
+ return err;
+}
+
+static void *setup(void *arg)
+{
+ int sock_fd, i;
+ int *array = (int *)arg;
+
+ for (i = 0; i < MAX_CONNECTIONS; i++) {
+ sock_fd = bind_socket(SO_REUSEADDR | SO_REUSEPORT, setup_addr);
+ if (sock_fd < 0) {
+ ret = sock_fd;
+ pthread_exit(&ret);
+ }
+ array[i] = sock_fd;
+ }
+
+ return NULL;
+}
+
+int main(int argc, const char *argv[])
+{
+ int listener_fd, sock_fd, i, j;
+ pthread_t tid[MAX_THREADS];
+ clock_t begin, end;
+
+ if (argc != 4) {
+ printf("Usage: listener <port> <ipv6 | ipv4> <bind-addr>\n");
+ return -1;
+ }
+
+ port = argv[1];
+ use_v6 = strcmp(argv[2], "ipv6") == 0;
+ bind_addr = argv[3];
+
+ setup_addr = use_v6 ? setup_addr_v6 : setup_addr_v4;
+
+ listener_fd = bind_socket(SO_REUSEADDR | SO_REUSEPORT, setup_addr);
+ if (listen(listener_fd, 100) < 0) {
+ perror("listen failed");
+ return -1;
+ }
+
+ /* Set up threads to populate the bhash table entry for the port */
+ for (i = 0; i < MAX_THREADS; i++)
+ pthread_create(&tid[i], NULL, setup, fd_array[i]);
+
+ for (i = 0; i < MAX_THREADS; i++)
+ pthread_join(tid[i], NULL);
+
+ if (ret)
+ goto done;
+
+ begin = clock();
+
+ /* Bind to the same port on a different address */
+ sock_fd = bind_socket(0, bind_addr);
+ if (sock_fd < 0)
+ goto done;
+
+ end = clock();
+
+ printf("time spent = %f\n", (double)(end - begin) / CLOCKS_PER_SEC);
+
+ /* clean up */
+ close(sock_fd);
+
+done:
+ close(listener_fd);
+ for (i = 0; i < MAX_THREADS; i++) {
+ for (j = 0; i < MAX_THREADS; i++)
+ close(fd_array[i][j]);
+ }
+
+ return 0;
+}
diff --git a/tools/testing/selftests/net/bind_bhash.sh b/tools/testing/selftests/net/bind_bhash.sh
new file mode 100755
index 000000000000..ca0292d4b441
--- /dev/null
+++ b/tools/testing/selftests/net/bind_bhash.sh
@@ -0,0 +1,66 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+NR_FILES=32768
+SAVED_NR_FILES=$(ulimit -n)
+
+# default values
+port=443
+addr_v6="2001:0db8:0:f101::1"
+addr_v4="10.8.8.8"
+use_v6=true
+addr=""
+
+usage() {
+ echo "Usage: $0 [-6 | -4] [-p port] [-a address]"
+ echo -e "\t6: use ipv6"
+ echo -e "\t4: use ipv4"
+ echo -e "\tport: Port number"
+ echo -e "\taddress: ip address"
+}
+
+while getopts "ha:p:64" opt; do
+ case ${opt} in
+ h)
+ usage $0
+ exit 0
+ ;;
+ a) addr=$OPTARG;;
+ p)
+ port=$OPTARG;;
+ 6)
+ use_v6=true;;
+ 4)
+ use_v6=false;;
+ esac
+done
+
+setup() {
+ if [[ "$use_v6" == true ]]; then
+ ip addr add $addr_v6 nodad dev eth0
+ else
+ ip addr add $addr_v4 dev lo
+ fi
+ ulimit -n $NR_FILES
+}
+
+cleanup() {
+ if [[ "$use_v6" == true ]]; then
+ ip addr del $addr_v6 dev eth0
+ else
+ ip addr del $addr_v4/32 dev lo
+ fi
+ ulimit -n $SAVED_NR_FILES
+}
+
+if [[ "$addr" != "" ]]; then
+ addr_v4=$addr;
+ addr_v6=$addr;
+fi
+setup
+if [[ "$use_v6" == true ]] ; then
+ ./bind_bhash $port "ipv6" $addr_v6
+else
+ ./bind_bhash $port "ipv4" $addr_v4
+fi
+cleanup
diff --git a/tools/testing/selftests/net/sk_bind_sendto_listen.c b/tools/testing/selftests/net/sk_bind_sendto_listen.c
new file mode 100644
index 000000000000..b420d830f72c
--- /dev/null
+++ b/tools/testing/selftests/net/sk_bind_sendto_listen.c
@@ -0,0 +1,80 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <arpa/inet.h>
+#include <error.h>
+#include <errno.h>
+#include <unistd.h>
+
+int main(void)
+{
+ int fd1, fd2, one = 1;
+ struct sockaddr_in6 bind_addr = {
+ .sin6_family = AF_INET6,
+ .sin6_port = htons(20000),
+ .sin6_flowinfo = htonl(0),
+ .sin6_addr = {},
+ .sin6_scope_id = 0,
+ };
+
+ inet_pton(AF_INET6, "::", &bind_addr.sin6_addr);
+
+ fd1 = socket(AF_INET6, SOCK_STREAM, IPPROTO_IP);
+ if (fd1 < 0) {
+ error(1, errno, "socket fd1");
+ return -1;
+ }
+
+ if (setsockopt(fd1, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one))) {
+ error(1, errno, "setsockopt(SO_REUSEADDR) fd1");
+ goto out_err1;
+ }
+
+ if (bind(fd1, (struct sockaddr *)&bind_addr, sizeof(bind_addr))) {
+ error(1, errno, "bind fd1");
+ goto out_err1;
+ }
+
+ if (sendto(fd1, NULL, 0, MSG_FASTOPEN, (struct sockaddr *)&bind_addr,
+ sizeof(bind_addr))) {
+ error(1, errno, "sendto fd1");
+ goto out_err1;
+ }
+
+ fd2 = socket(AF_INET6, SOCK_STREAM, IPPROTO_IP);
+ if (fd2 < 0) {
+ error(1, errno, "socket fd2");
+ goto out_err1;
+ }
+
+ if (setsockopt(fd2, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one))) {
+ error(1, errno, "setsockopt(SO_REUSEADDR) fd2");
+ goto out_err2;
+ }
+
+ if (bind(fd2, (struct sockaddr *)&bind_addr, sizeof(bind_addr))) {
+ error(1, errno, "bind fd2");
+ goto out_err2;
+ }
+
+ if (sendto(fd2, NULL, 0, MSG_FASTOPEN, (struct sockaddr *)&bind_addr,
+ sizeof(bind_addr)) != -1) {
+ error(1, errno, "sendto fd2");
+ goto out_err2;
+ }
+
+ if (listen(fd2, 0)) {
+ error(1, errno, "listen");
+ goto out_err2;
+ }
+
+ close(fd2);
+ close(fd1);
+ return 0;
+
+out_err2:
+ close(fd2);
+
+out_err1:
+ close(fd1);
+ return -1;
+}
diff --git a/tools/testing/selftests/net/sk_connect_zero_addr.c b/tools/testing/selftests/net/sk_connect_zero_addr.c
new file mode 100644
index 000000000000..4be418aefd9f
--- /dev/null
+++ b/tools/testing/selftests/net/sk_connect_zero_addr.c
@@ -0,0 +1,62 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <arpa/inet.h>
+#include <error.h>
+#include <errno.h>
+#include <unistd.h>
+
+int main(void)
+{
+ int fd1, fd2, one = 1;
+ struct sockaddr_in6 bind_addr = {
+ .sin6_family = AF_INET6,
+ .sin6_port = htons(20000),
+ .sin6_flowinfo = htonl(0),
+ .sin6_addr = {},
+ .sin6_scope_id = 0,
+ };
+
+ inet_pton(AF_INET6, "::", &bind_addr.sin6_addr);
+
+ fd1 = socket(AF_INET6, SOCK_STREAM, IPPROTO_IP);
+ if (fd1 < 0) {
+ error(1, errno, "socket fd1");
+ return -1;
+ }
+
+ if (setsockopt(fd1, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one))) {
+ error(1, errno, "setsockopt(SO_REUSEADDR) fd1");
+ goto out_err1;
+ }
+
+ if (bind(fd1, (struct sockaddr *)&bind_addr, sizeof(bind_addr))) {
+ error(1, errno, "bind fd1");
+ goto out_err1;
+ }
+
+ if (listen(fd1, 0)) {
+ error(1, errno, "listen");
+ goto out_err1;
+ }
+
+ fd2 = socket(AF_INET6, SOCK_STREAM, IPPROTO_IP);
+ if (fd2 < 0) {
+ error(1, errno, "socket fd2");
+ goto out_err1;
+ }
+
+ if (connect(fd2, (struct sockaddr *)&bind_addr, sizeof(bind_addr))) {
+ error(1, errno, "bind fd2");
+ goto out_err2;
+ }
+
+ close(fd2);
+ close(fd1);
+ return 0;
+
+out_err2:
+ close(fd2);
+out_err1:
+ close(fd1);
+ return -1;
+}
generated by cgit (git 2.34.1) at 2026-01-05 04:19:18 +0000