390 lines
8.6 KiB
C
390 lines
8.6 KiB
C
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#include <errno.h>
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#include <error.h>
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#include <getopt.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <sys/select.h>
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#include <sys/ioctl.h>
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#include <arpa/inet.h>
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#include <net/if.h>
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#include <asm/types.h>
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#include <linux/net_tstamp.h>
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#include <linux/errqueue.h>
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#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
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struct options {
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int so_timestamp;
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int so_timestampns;
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int so_timestamping;
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};
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struct tstamps {
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bool tstamp;
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bool tstampns;
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bool swtstamp;
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bool hwtstamp;
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};
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struct socket_type {
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char *friendly_name;
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int type;
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int protocol;
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bool enabled;
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};
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struct test_case {
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struct options sockopt;
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struct tstamps expected;
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bool enabled;
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};
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struct sof_flag {
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int mask;
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char *name;
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};
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static struct sof_flag sof_flags[] = {
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#define SOF_FLAG(f) { f, #f }
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SOF_FLAG(SOF_TIMESTAMPING_SOFTWARE),
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SOF_FLAG(SOF_TIMESTAMPING_RX_SOFTWARE),
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SOF_FLAG(SOF_TIMESTAMPING_RX_HARDWARE),
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};
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static struct socket_type socket_types[] = {
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{ "ip", SOCK_RAW, IPPROTO_EGP },
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{ "udp", SOCK_DGRAM, IPPROTO_UDP },
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{ "tcp", SOCK_STREAM, IPPROTO_TCP },
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};
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static struct test_case test_cases[] = {
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{ {}, {} },
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{
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{ so_timestamp: 1 },
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{ tstamp: true }
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},
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{
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{ so_timestampns: 1 },
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{ tstampns: true }
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},
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{
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{ so_timestamp: 1, so_timestampns: 1 },
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{ tstampns: true }
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},
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{
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{ so_timestamping: SOF_TIMESTAMPING_RX_SOFTWARE },
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{}
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},
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{
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/* Loopback device does not support hw timestamps. */
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{ so_timestamping: SOF_TIMESTAMPING_RX_HARDWARE },
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{}
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},
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{
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{ so_timestamping: SOF_TIMESTAMPING_SOFTWARE },
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{}
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},
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{
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{ so_timestamping: SOF_TIMESTAMPING_RX_SOFTWARE
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| SOF_TIMESTAMPING_RX_HARDWARE },
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{}
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},
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{
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{ so_timestamping: SOF_TIMESTAMPING_SOFTWARE
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| SOF_TIMESTAMPING_RX_SOFTWARE },
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{ swtstamp: true }
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},
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{
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{ so_timestamp: 1, so_timestamping: SOF_TIMESTAMPING_SOFTWARE
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| SOF_TIMESTAMPING_RX_SOFTWARE },
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{ tstamp: true, swtstamp: true }
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},
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};
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static struct option long_options[] = {
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{ "list_tests", no_argument, 0, 'l' },
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{ "test_num", required_argument, 0, 'n' },
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{ "op_size", required_argument, 0, 's' },
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{ "tcp", no_argument, 0, 't' },
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{ "udp", no_argument, 0, 'u' },
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{ "ip", no_argument, 0, 'i' },
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{ NULL, 0, NULL, 0 },
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};
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static int next_port = 19999;
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static int op_size = 10 * 1024;
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void print_test_case(struct test_case *t)
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{
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int f = 0;
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printf("sockopts {");
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if (t->sockopt.so_timestamp)
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printf(" SO_TIMESTAMP ");
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if (t->sockopt.so_timestampns)
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printf(" SO_TIMESTAMPNS ");
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if (t->sockopt.so_timestamping) {
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printf(" SO_TIMESTAMPING: {");
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for (f = 0; f < ARRAY_SIZE(sof_flags); f++)
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if (t->sockopt.so_timestamping & sof_flags[f].mask)
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printf(" %s |", sof_flags[f].name);
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printf("}");
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}
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printf("} expected cmsgs: {");
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if (t->expected.tstamp)
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printf(" SCM_TIMESTAMP ");
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if (t->expected.tstampns)
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printf(" SCM_TIMESTAMPNS ");
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if (t->expected.swtstamp || t->expected.hwtstamp) {
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printf(" SCM_TIMESTAMPING {");
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if (t->expected.swtstamp)
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printf("0");
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if (t->expected.swtstamp && t->expected.hwtstamp)
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printf(",");
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if (t->expected.hwtstamp)
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printf("2");
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printf("}");
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}
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printf("}\n");
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}
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void do_send(int src)
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{
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int r;
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char *buf = malloc(op_size);
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memset(buf, 'z', op_size);
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r = write(src, buf, op_size);
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if (r < 0)
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error(1, errno, "Failed to sendmsg");
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free(buf);
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}
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bool do_recv(int rcv, int read_size, struct tstamps expected)
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{
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const int CMSG_SIZE = 1024;
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struct scm_timestamping *ts;
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struct tstamps actual = {};
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char cmsg_buf[CMSG_SIZE];
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struct iovec recv_iov;
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struct cmsghdr *cmsg;
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bool failed = false;
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struct msghdr hdr;
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int flags = 0;
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int r;
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memset(&hdr, 0, sizeof(hdr));
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hdr.msg_iov = &recv_iov;
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hdr.msg_iovlen = 1;
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recv_iov.iov_base = malloc(read_size);
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recv_iov.iov_len = read_size;
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hdr.msg_control = cmsg_buf;
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hdr.msg_controllen = sizeof(cmsg_buf);
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r = recvmsg(rcv, &hdr, flags);
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if (r < 0)
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error(1, errno, "Failed to recvmsg");
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if (r != read_size)
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error(1, 0, "Only received %d bytes of payload.", r);
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if (hdr.msg_flags & (MSG_TRUNC | MSG_CTRUNC))
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error(1, 0, "Message was truncated.");
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for (cmsg = CMSG_FIRSTHDR(&hdr); cmsg != NULL;
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cmsg = CMSG_NXTHDR(&hdr, cmsg)) {
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if (cmsg->cmsg_level != SOL_SOCKET)
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error(1, 0, "Unexpected cmsg_level %d",
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cmsg->cmsg_level);
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switch (cmsg->cmsg_type) {
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case SCM_TIMESTAMP:
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actual.tstamp = true;
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break;
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case SCM_TIMESTAMPNS:
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actual.tstampns = true;
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break;
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case SCM_TIMESTAMPING:
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ts = (struct scm_timestamping *)CMSG_DATA(cmsg);
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actual.swtstamp = !!ts->ts[0].tv_sec;
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if (ts->ts[1].tv_sec != 0)
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error(0, 0, "ts[1] should not be set.");
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actual.hwtstamp = !!ts->ts[2].tv_sec;
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break;
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default:
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error(1, 0, "Unexpected cmsg_type %d", cmsg->cmsg_type);
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}
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}
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#define VALIDATE(field) \
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do { \
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if (expected.field != actual.field) { \
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if (expected.field) \
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error(0, 0, "Expected " #field " to be set."); \
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else \
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error(0, 0, \
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"Expected " #field " to not be set."); \
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failed = true; \
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} \
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} while (0)
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VALIDATE(tstamp);
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VALIDATE(tstampns);
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VALIDATE(swtstamp);
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VALIDATE(hwtstamp);
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#undef VALIDATE
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free(recv_iov.iov_base);
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return failed;
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}
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void config_so_flags(int rcv, struct options o)
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{
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int on = 1;
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if (setsockopt(rcv, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) < 0)
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error(1, errno, "Failed to enable SO_REUSEADDR");
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if (o.so_timestamp &&
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setsockopt(rcv, SOL_SOCKET, SO_TIMESTAMP,
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&o.so_timestamp, sizeof(o.so_timestamp)) < 0)
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error(1, errno, "Failed to enable SO_TIMESTAMP");
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if (o.so_timestampns &&
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setsockopt(rcv, SOL_SOCKET, SO_TIMESTAMPNS,
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&o.so_timestampns, sizeof(o.so_timestampns)) < 0)
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error(1, errno, "Failed to enable SO_TIMESTAMPNS");
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if (o.so_timestamping &&
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setsockopt(rcv, SOL_SOCKET, SO_TIMESTAMPING,
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&o.so_timestamping, sizeof(o.so_timestamping)) < 0)
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error(1, errno, "Failed to set SO_TIMESTAMPING");
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}
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bool run_test_case(struct socket_type s, struct test_case t)
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{
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int port = (s.type == SOCK_RAW) ? 0 : next_port++;
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int read_size = op_size;
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struct sockaddr_in addr;
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bool failed = false;
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int src, dst, rcv;
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src = socket(AF_INET, s.type, s.protocol);
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if (src < 0)
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error(1, errno, "Failed to open src socket");
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dst = socket(AF_INET, s.type, s.protocol);
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if (dst < 0)
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error(1, errno, "Failed to open dst socket");
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memset(&addr, 0, sizeof(addr));
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addr.sin_family = AF_INET;
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addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
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addr.sin_port = htons(port);
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if (bind(dst, (struct sockaddr *)&addr, sizeof(addr)) < 0)
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error(1, errno, "Failed to bind to port %d", port);
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if (s.type == SOCK_STREAM && (listen(dst, 1) < 0))
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error(1, errno, "Failed to listen");
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if (connect(src, (struct sockaddr *)&addr, sizeof(addr)) < 0)
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error(1, errno, "Failed to connect");
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if (s.type == SOCK_STREAM) {
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rcv = accept(dst, NULL, NULL);
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if (rcv < 0)
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error(1, errno, "Failed to accept");
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close(dst);
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} else {
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rcv = dst;
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}
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config_so_flags(rcv, t.sockopt);
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usleep(20000); /* setsockopt for SO_TIMESTAMPING is asynchronous */
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do_send(src);
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if (s.type == SOCK_RAW)
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read_size += 20; /* for IP header */
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failed = do_recv(rcv, read_size, t.expected);
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close(rcv);
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close(src);
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return failed;
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}
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int main(int argc, char **argv)
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{
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bool all_protocols = true;
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bool all_tests = true;
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int arg_index = 0;
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int failures = 0;
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int s, t, opt;
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while ((opt = getopt_long(argc, argv, "", long_options,
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&arg_index)) != -1) {
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switch (opt) {
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case 'l':
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for (t = 0; t < ARRAY_SIZE(test_cases); t++) {
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printf("%d\t", t);
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print_test_case(&test_cases[t]);
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}
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return 0;
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case 'n':
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t = atoi(optarg);
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if (t >= ARRAY_SIZE(test_cases))
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error(1, 0, "Invalid test case: %d", t);
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all_tests = false;
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test_cases[t].enabled = true;
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break;
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case 's':
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op_size = atoi(optarg);
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break;
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case 't':
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all_protocols = false;
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socket_types[2].enabled = true;
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break;
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case 'u':
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all_protocols = false;
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socket_types[1].enabled = true;
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break;
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case 'i':
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all_protocols = false;
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socket_types[0].enabled = true;
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break;
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default:
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error(1, 0, "Failed to parse parameters.");
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}
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}
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for (s = 0; s < ARRAY_SIZE(socket_types); s++) {
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if (!all_protocols && !socket_types[s].enabled)
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continue;
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printf("Testing %s...\n", socket_types[s].friendly_name);
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for (t = 0; t < ARRAY_SIZE(test_cases); t++) {
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if (!all_tests && !test_cases[t].enabled)
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continue;
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printf("Starting testcase %d...\n", t);
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if (run_test_case(socket_types[s], test_cases[t])) {
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failures++;
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||
|
|
printf("FAILURE in test case ");
|
||
|
|
print_test_case(&test_cases[t]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (!failures)
|
||
|
|
printf("PASSED.\n");
|
||
|
|
return failures;
|
||
|
|
}
|