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-rw-r--r--tools/testing/selftests/net/psock_lib.h127
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
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+++ b/tools/testing/selftests/net/psock_lib.h
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+/*
+ * 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 */
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