1 files changed, 127 insertions, 0 deletions

diff --git a/tools/testing/selftests/net/psock_lib.h b/tools/testing/selftests/net/psock_lib.h
new file mode 100644
index 000000000000..37da54ac85a9
--- /dev/null
+++ b/tools/testing/selftests/net/psock_lib.h
@@ -0,0 +1,127 @@
+/*
+ * Copyright 2013 Google Inc.
+ * Author: Willem de Bruijn <willemb@google.com>
+ *         Daniel Borkmann <dborkman@redhat.com>
+ *
+ * License (GPLv2):
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef PSOCK_LIB_H
+#define PSOCK_LIB_H
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <string.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+
+#define DATA_LEN                        100
+#define DATA_CHAR                       'a'
+
+#define PORT_BASE                       8000
+
+#ifndef __maybe_unused
+# define __maybe_unused         __attribute__ ((__unused__))
+#endif
+
+static __maybe_unused void pair_udp_setfilter(int fd)
+{
+        struct sock_filter bpf_filter[] = {
+                { 0x80, 0, 0, 0x00000000 },  /* LD  pktlen                    */
+                { 0x35, 0, 5, DATA_LEN   },  /* JGE DATA_LEN  [f goto nomatch]*/
+                { 0x30, 0, 0, 0x00000050 },  /* LD  ip[80]                    */
+                { 0x15, 0, 3, DATA_CHAR  },  /* JEQ DATA_CHAR [f goto nomatch]*/
+                { 0x30, 0, 0, 0x00000051 },  /* LD  ip[81]                    */
+                { 0x15, 0, 1, DATA_CHAR  },  /* JEQ DATA_CHAR [f goto nomatch]*/
+                { 0x06, 0, 0, 0x00000060 },  /* RET match                     */
+                { 0x06, 0, 0, 0x00000000 },  /* RET no match                  */
+        };
+        struct sock_fprog bpf_prog;
+
+        bpf_prog.filter = bpf_filter;
+        bpf_prog.len = sizeof(bpf_filter) / sizeof(struct sock_filter);
+        if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, &bpf_prog,
+                       sizeof(bpf_prog))) {
+                perror("setsockopt SO_ATTACH_FILTER");
+                exit(1);
+        }
+}
+
+static __maybe_unused void pair_udp_open(int fds[], uint16_t port)
+{
+        struct sockaddr_in saddr, daddr;
+
+        fds[0] = socket(PF_INET, SOCK_DGRAM, 0);
+        fds[1] = socket(PF_INET, SOCK_DGRAM, 0);
+        if (fds[0] == -1 || fds[1] == -1) {
+                fprintf(stderr, "ERROR: socket dgram\n");
+                exit(1);
+        }
+
+        memset(&saddr, 0, sizeof(saddr));
+        saddr.sin_family = AF_INET;
+        saddr.sin_port = htons(port);
+        saddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+
+        memset(&daddr, 0, sizeof(daddr));
+        daddr.sin_family = AF_INET;
+        daddr.sin_port = htons(port + 1);
+        daddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+
+        /* must bind both to get consistent hash result */
+        if (bind(fds[1], (void *) &daddr, sizeof(daddr))) {
+                perror("bind");
+                exit(1);
+        }
+        if (bind(fds[0], (void *) &saddr, sizeof(saddr))) {
+                perror("bind");
+                exit(1);
+        }
+        if (connect(fds[0], (void *) &daddr, sizeof(daddr))) {
+                perror("connect");
+                exit(1);
+        }
+}
+
+static __maybe_unused void pair_udp_send(int fds[], int num)
+{
+        char buf[DATA_LEN], rbuf[DATA_LEN];
+
+        memset(buf, DATA_CHAR, sizeof(buf));
+        while (num--) {
+                /* Should really handle EINTR and EAGAIN */
+                if (write(fds[0], buf, sizeof(buf)) != sizeof(buf)) {
+                        fprintf(stderr, "ERROR: send failed left=%d\n", num);
+                        exit(1);
+                }
+                if (read(fds[1], rbuf, sizeof(rbuf)) != sizeof(rbuf)) {
+                        fprintf(stderr, "ERROR: recv failed left=%d\n", num);
+                        exit(1);
+                }
+                if (memcmp(buf, rbuf, sizeof(buf))) {
+                        fprintf(stderr, "ERROR: data failed left=%d\n", num);
+                        exit(1);
+                }
+        }
+}
+
+static __maybe_unused void pair_udp_close(int fds[])
+{
+        close(fds[0]);
+        close(fds[1]);
+}
+
+#endif /* PSOCK_LIB_H */