/*
* Test the SO_TXTIME API
*
- * Takes two streams of { payload, delivery time }[], one input and one output.
- * Sends the input stream and verifies arrival matches the output stream.
- * The two streams can differ due to out-of-order delivery and drops.
+ * Takes a stream of { payload, delivery time }[], to be sent across two
+ * processes. Start this program on two separate network namespaces or
+ * connected hosts, one instance in transmit mode and the other in receive
+ * mode using the '-r' option. Receiver will compare arrival timestamps to
+ * the expected stream. Sender will read transmit timestamps from the error
+ * queue. The streams can differ due to out-of-order delivery and drops.
*/
#define _GNU_SOURCE
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
+#include <poll.h>
static int cfg_clockid = CLOCK_TAI;
-static bool cfg_do_ipv4;
-static bool cfg_do_ipv6;
static uint16_t cfg_port = 8000;
static int cfg_variance_us = 4000;
+static uint64_t cfg_start_time_ns;
+static int cfg_mark;
+static bool cfg_rx;
static uint64_t glob_tstart;
+static uint64_t tdeliver_max;
/* encode one timed transmission (of a 1B payload) */
struct timed_send {
};
#define MAX_NUM_PKT 8
-static struct timed_send cfg_in[MAX_NUM_PKT];
-static struct timed_send cfg_out[MAX_NUM_PKT];
+static struct timed_send cfg_buf[MAX_NUM_PKT];
static int cfg_num_pkt;
static int cfg_errq_level;
static int cfg_errq_type;
-static uint64_t gettime_ns(void)
+static struct sockaddr_storage cfg_dst_addr;
+static struct sockaddr_storage cfg_src_addr;
+static socklen_t cfg_alen;
+
+static uint64_t gettime_ns(clockid_t clock)
{
struct timespec ts;
- if (clock_gettime(cfg_clockid, &ts))
+ if (clock_gettime(clock, &ts))
error(1, errno, "gettime");
return ts.tv_sec * (1000ULL * 1000 * 1000) + ts.tv_nsec;
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
+ msg.msg_name = (struct sockaddr *)&cfg_dst_addr;
+ msg.msg_namelen = cfg_alen;
if (ts->delay_us >= 0) {
memset(control, 0, sizeof(control));
msg.msg_controllen = sizeof(control);
tdeliver = glob_tstart + ts->delay_us * 1000;
+ tdeliver_max = tdeliver_max > tdeliver ?
+ tdeliver_max : tdeliver;
cm = CMSG_FIRSTHDR(&msg);
cm->cmsg_level = SOL_SOCKET;
}
-static bool do_recv_one(int fdr, struct timed_send *ts)
+static void do_recv_one(int fdr, struct timed_send *ts)
{
int64_t tstop, texpect;
char rbuf[2];
ret = recv(fdr, rbuf, sizeof(rbuf), 0);
if (ret == -1 && errno == EAGAIN)
- return true;
+ error(1, EAGAIN, "recv: timeout");
if (ret == -1)
error(1, errno, "read");
if (ret != 1)
error(1, 0, "read: %dB", ret);
- tstop = (gettime_ns() - glob_tstart) / 1000;
+ tstop = (gettime_ns(cfg_clockid) - glob_tstart) / 1000;
texpect = ts->delay_us >= 0 ? ts->delay_us : 0;
fprintf(stderr, "payload:%c delay:%lld expected:%lld (us)\n",
if (llabs(tstop - texpect) > cfg_variance_us)
error(1, 0, "exceeds variance (%d us)", cfg_variance_us);
-
- return false;
}
static void do_recv_verify_empty(int fdr)
error(1, 0, "recv: not empty as expected (%d, %d)", ret, errno);
}
-static void do_recv_errqueue_timeout(int fdt)
+static int do_recv_errqueue_timeout(int fdt)
{
char control[CMSG_SPACE(sizeof(struct sock_extended_err)) +
CMSG_SPACE(sizeof(struct sockaddr_in6))] = {0};
char data[sizeof(struct ethhdr) + sizeof(struct ipv6hdr) +
sizeof(struct udphdr) + 1];
struct sock_extended_err *err;
+ int ret, num_tstamp = 0;
struct msghdr msg = {0};
struct iovec iov = {0};
struct cmsghdr *cm;
int64_t tstamp = 0;
- int ret;
iov.iov_base = data;
iov.iov_len = sizeof(data);
msg.msg_flags = 0;
msg.msg_controllen = sizeof(control);
+ num_tstamp++;
}
- error(1, 0, "recv: timeout");
+ return num_tstamp;
+}
+
+static void recv_errqueue_msgs(int fdt)
+{
+ struct pollfd pfd = { .fd = fdt, .events = POLLERR };
+ const int timeout_ms = 10;
+ int ret, num_tstamp = 0;
+
+ do {
+ ret = poll(&pfd, 1, timeout_ms);
+ if (ret == -1)
+ error(1, errno, "poll");
+
+ if (ret && (pfd.revents & POLLERR))
+ num_tstamp += do_recv_errqueue_timeout(fdt);
+
+ if (num_tstamp == cfg_num_pkt)
+ break;
+
+ } while (gettime_ns(cfg_clockid) < tdeliver_max);
+}
+
+static void start_time_wait(void)
+{
+ uint64_t now;
+ int err;
+
+ if (!cfg_start_time_ns)
+ return;
+
+ now = gettime_ns(CLOCK_REALTIME);
+ if (cfg_start_time_ns < now)
+ return;
+
+ err = usleep((cfg_start_time_ns - now) / 1000);
+ if (err)
+ error(1, errno, "usleep");
}
static void setsockopt_txtime(int fd)
setsockopt_txtime(fd);
+ if (cfg_mark &&
+ setsockopt(fd, SOL_SOCKET, SO_MARK, &cfg_mark, sizeof(cfg_mark)))
+ error(1, errno, "setsockopt mark");
+
return fd;
}
return fd;
}
-static void do_test(struct sockaddr *addr, socklen_t alen)
+static void do_test_tx(struct sockaddr *addr, socklen_t alen)
{
- int fdt, fdr, i;
+ int fdt, i;
fprintf(stderr, "\nSO_TXTIME ipv%c clock %s\n",
addr->sa_family == PF_INET ? '4' : '6',
cfg_clockid == CLOCK_TAI ? "tai" : "monotonic");
fdt = setup_tx(addr, alen);
- fdr = setup_rx(addr, alen);
- glob_tstart = gettime_ns();
+ start_time_wait();
+ glob_tstart = gettime_ns(cfg_clockid);
for (i = 0; i < cfg_num_pkt; i++)
- do_send_one(fdt, &cfg_in[i]);
+ do_send_one(fdt, &cfg_buf[i]);
+
+ recv_errqueue_msgs(fdt);
+
+ if (close(fdt))
+ error(1, errno, "close t");
+}
+
+static void do_test_rx(struct sockaddr *addr, socklen_t alen)
+{
+ int fdr, i;
+
+ fdr = setup_rx(addr, alen);
+
+ start_time_wait();
+ glob_tstart = gettime_ns(cfg_clockid);
+
for (i = 0; i < cfg_num_pkt; i++)
- if (do_recv_one(fdr, &cfg_out[i]))
- do_recv_errqueue_timeout(fdt);
+ do_recv_one(fdr, &cfg_buf[i]);
do_recv_verify_empty(fdr);
if (close(fdr))
error(1, errno, "close r");
- if (close(fdt))
- error(1, errno, "close t");
+}
+
+static void setup_sockaddr(int domain, const char *str_addr,
+ struct sockaddr_storage *sockaddr)
+{
+ struct sockaddr_in6 *addr6 = (void *) sockaddr;
+ struct sockaddr_in *addr4 = (void *) sockaddr;
+
+ switch (domain) {
+ case PF_INET:
+ memset(addr4, 0, sizeof(*addr4));
+ addr4->sin_family = AF_INET;
+ addr4->sin_port = htons(cfg_port);
+ if (str_addr &&
+ inet_pton(AF_INET, str_addr, &(addr4->sin_addr)) != 1)
+ error(1, 0, "ipv4 parse error: %s", str_addr);
+ break;
+ case PF_INET6:
+ memset(addr6, 0, sizeof(*addr6));
+ addr6->sin6_family = AF_INET6;
+ addr6->sin6_port = htons(cfg_port);
+ if (str_addr &&
+ inet_pton(AF_INET6, str_addr, &(addr6->sin6_addr)) != 1)
+ error(1, 0, "ipv6 parse error: %s", str_addr);
+ break;
+ }
}
static int parse_io(const char *optarg, struct timed_send *array)
return aoff / 2;
}
+static void usage(const char *progname)
+{
+ fprintf(stderr, "\nUsage: %s [options] <payload>\n"
+ "Options:\n"
+ " -4 only IPv4\n"
+ " -6 only IPv6\n"
+ " -c <clock> monotonic (default) or tai\n"
+ " -D <addr> destination IP address (server)\n"
+ " -S <addr> source IP address (client)\n"
+ " -r run rx mode\n"
+ " -t <nsec> start time (UTC nanoseconds)\n"
+ " -m <mark> socket mark\n"
+ "\n",
+ progname);
+ exit(1);
+}
+
static void parse_opts(int argc, char **argv)
{
- int c, ilen, olen;
+ char *daddr = NULL, *saddr = NULL;
+ int domain = PF_UNSPEC;
+ int c;
- while ((c = getopt(argc, argv, "46c:")) != -1) {
+ while ((c = getopt(argc, argv, "46c:S:D:rt:m:")) != -1) {
switch (c) {
case '4':
- cfg_do_ipv4 = true;
+ if (domain != PF_UNSPEC)
+ error(1, 0, "Pass one of -4 or -6");
+ domain = PF_INET;
+ cfg_alen = sizeof(struct sockaddr_in);
+ cfg_errq_level = SOL_IP;
+ cfg_errq_type = IP_RECVERR;
break;
case '6':
- cfg_do_ipv6 = true;
+ if (domain != PF_UNSPEC)
+ error(1, 0, "Pass one of -4 or -6");
+ domain = PF_INET6;
+ cfg_alen = sizeof(struct sockaddr_in6);
+ cfg_errq_level = SOL_IPV6;
+ cfg_errq_type = IPV6_RECVERR;
break;
case 'c':
if (!strcmp(optarg, "tai"))
else
error(1, 0, "unknown clock id %s", optarg);
break;
+ case 'S':
+ saddr = optarg;
+ break;
+ case 'D':
+ daddr = optarg;
+ break;
+ case 'r':
+ cfg_rx = true;
+ break;
+ case 't':
+ cfg_start_time_ns = strtol(optarg, NULL, 0);
+ break;
+ case 'm':
+ cfg_mark = strtol(optarg, NULL, 0);
+ break;
default:
- error(1, 0, "parse error at %d", optind);
+ usage(argv[0]);
}
}
- if (argc - optind != 2)
- error(1, 0, "Usage: %s [-46] -c <clock> <in> <out>", argv[0]);
+ if (argc - optind != 1)
+ usage(argv[0]);
+
+ if (domain == PF_UNSPEC)
+ error(1, 0, "Pass one of -4 or -6");
+ if (!daddr)
+ error(1, 0, "-D <server addr> required\n");
+ if (!cfg_rx && !saddr)
+ error(1, 0, "-S <client addr> required\n");
- ilen = parse_io(argv[optind], cfg_in);
- olen = parse_io(argv[optind + 1], cfg_out);
- if (ilen != olen)
- error(1, 0, "i/o streams len mismatch (%d, %d)\n", ilen, olen);
- cfg_num_pkt = ilen;
+ setup_sockaddr(domain, daddr, &cfg_dst_addr);
+ setup_sockaddr(domain, saddr, &cfg_src_addr);
+
+ cfg_num_pkt = parse_io(argv[optind], cfg_buf);
}
int main(int argc, char **argv)
{
parse_opts(argc, argv);
- if (cfg_do_ipv6) {
- struct sockaddr_in6 addr6 = {0};
-
- addr6.sin6_family = AF_INET6;
- addr6.sin6_port = htons(cfg_port);
- addr6.sin6_addr = in6addr_loopback;
-
- cfg_errq_level = SOL_IPV6;
- cfg_errq_type = IPV6_RECVERR;
-
- do_test((void *)&addr6, sizeof(addr6));
- }
-
- if (cfg_do_ipv4) {
- struct sockaddr_in addr4 = {0};
-
- addr4.sin_family = AF_INET;
- addr4.sin_port = htons(cfg_port);
- addr4.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
-
- cfg_errq_level = SOL_IP;
- cfg_errq_type = IP_RECVERR;
-
- do_test((void *)&addr4, sizeof(addr4));
- }
+ if (cfg_rx)
+ do_test_rx((void *)&cfg_dst_addr, cfg_alen);
+ else
+ do_test_tx((void *)&cfg_src_addr, cfg_alen);
return 0;
}
#
# Regression tests for the SO_TXTIME interface
-# Run in network namespace
-if [[ $# -eq 0 ]]; then
- if ! ./in_netns.sh $0 __subprocess; then
- # test is time sensitive, can be flaky
- echo "test failed: retry once"
- ./in_netns.sh $0 __subprocess
+set -e
+
+readonly DEV="veth0"
+readonly BIN="./so_txtime"
+
+readonly RAND="$(mktemp -u XXXXXX)"
+readonly NSPREFIX="ns-${RAND}"
+readonly NS1="${NSPREFIX}1"
+readonly NS2="${NSPREFIX}2"
+
+readonly SADDR4='192.168.1.1'
+readonly DADDR4='192.168.1.2'
+readonly SADDR6='fd::1'
+readonly DADDR6='fd::2'
+
+cleanup() {
+ ip netns del "${NS2}"
+ ip netns del "${NS1}"
+}
+
+trap cleanup EXIT
+
+# Create virtual ethernet pair between network namespaces
+ip netns add "${NS1}"
+ip netns add "${NS2}"
+
+ip link add "${DEV}" netns "${NS1}" type veth \
+ peer name "${DEV}" netns "${NS2}"
+
+# Bring the devices up
+ip -netns "${NS1}" link set "${DEV}" up
+ip -netns "${NS2}" link set "${DEV}" up
+
+# Set fixed MAC addresses on the devices
+ip -netns "${NS1}" link set dev "${DEV}" address 02:02:02:02:02:02
+ip -netns "${NS2}" link set dev "${DEV}" address 06:06:06:06:06:06
+
+# Add fixed IP addresses to the devices
+ip -netns "${NS1}" addr add 192.168.1.1/24 dev "${DEV}"
+ip -netns "${NS2}" addr add 192.168.1.2/24 dev "${DEV}"
+ip -netns "${NS1}" addr add fd::1/64 dev "${DEV}" nodad
+ip -netns "${NS2}" addr add fd::2/64 dev "${DEV}" nodad
+
+do_test() {
+ local readonly IP="$1"
+ local readonly CLOCK="$2"
+ local readonly TXARGS="$3"
+ local readonly RXARGS="$4"
+
+ if [[ "${IP}" == "4" ]]; then
+ local readonly SADDR="${SADDR4}"
+ local readonly DADDR="${DADDR4}"
+ elif [[ "${IP}" == "6" ]]; then
+ local readonly SADDR="${SADDR6}"
+ local readonly DADDR="${DADDR6}"
+ else
+ echo "Invalid IP version ${IP}"
+ exit 1
fi
- exit $?
-fi
+ local readonly START="$(date +%s%N --date="+ 0.1 seconds")"
+ ip netns exec "${NS2}" "${BIN}" -"${IP}" -c "${CLOCK}" -t "${START}" -S "${SADDR}" -D "${DADDR}" "${RXARGS}" -r &
+ ip netns exec "${NS1}" "${BIN}" -"${IP}" -c "${CLOCK}" -t "${START}" -S "${SADDR}" -D "${DADDR}" "${TXARGS}"
+ wait "$!"
+}
-set -e
+ip netns exec "${NS1}" tc qdisc add dev "${DEV}" root fq
+do_test 4 mono a,-1 a,-1
+do_test 6 mono a,0 a,0
+do_test 6 mono a,10 a,10
+do_test 4 mono a,10,b,20 a,10,b,20
+do_test 6 mono a,20,b,10 b,20,a,20
-tc qdisc add dev lo root fq
-./so_txtime -4 -6 -c mono a,-1 a,-1
-./so_txtime -4 -6 -c mono a,0 a,0
-./so_txtime -4 -6 -c mono a,10 a,10
-./so_txtime -4 -6 -c mono a,10,b,20 a,10,b,20
-./so_txtime -4 -6 -c mono a,20,b,10 b,20,a,20
-
-if tc qdisc replace dev lo root etf clockid CLOCK_TAI delta 400000; then
- ! ./so_txtime -4 -6 -c tai a,-1 a,-1
- ! ./so_txtime -4 -6 -c tai a,0 a,0
- ./so_txtime -4 -6 -c tai a,10 a,10
- ./so_txtime -4 -6 -c tai a,10,b,20 a,10,b,20
- ./so_txtime -4 -6 -c tai a,20,b,10 b,10,a,20
+if ip netns exec "${NS1}" tc qdisc replace dev "${DEV}" root etf clockid CLOCK_TAI delta 400000; then
+ ! do_test 4 tai a,-1 a,-1
+ ! do_test 6 tai a,0 a,0
+ do_test 6 tai a,10 a,10
+ do_test 4 tai a,10,b,20 a,10,b,20
+ do_test 6 tai a,20,b,10 b,10,a,20
else
echo "tc ($(tc -V)) does not support qdisc etf. skipping"
fi
projects / linux-2.6-microblaze.git / commitdiff