# SPDX-License-Identifier: GPL-2.0-only
napi_id_helper
psp_responder
+so_txtime
TEST_GEN_FILES := \
napi_id_helper \
+ so_txtime \
# end of TEST_GEN_FILES
TEST_PROGS := \
queues.py \
ring_reconfig.py \
shaper.py \
+ so_txtime.py \
stats.py \
xdp.py \
# end of TEST_PROGS
CONFIG_NETCONSOLE_DYNAMIC=y
CONFIG_NETCONSOLE_EXTENDED_LOG=y
CONFIG_NETDEVSIM=m
+CONFIG_NET_SCH_ETF=m
+CONFIG_NET_SCH_FQ=m
CONFIG_VLAN_8021Q=m
CONFIG_XDP_SOCKETS=y
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Test the SO_TXTIME API
+ *
+ * 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 <arpa/inet.h>
+#include <error.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <linux/net_tstamp.h>
+#include <linux/errqueue.h>
+#include <linux/if_ether.h>
+#include <linux/ipv6.h>
+#include <linux/udp.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+#include <poll.h>
+
+#include "kselftest.h"
+
+static int cfg_clockid = CLOCK_TAI;
+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;
+
+static int errors;
+
+/* encode one timed transmission (of a 1B payload) */
+struct timed_send {
+ char data;
+ int64_t delay_us;
+};
+
+#define MAX_NUM_PKT 8
+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 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(clock, &ts))
+ error(1, errno, "gettime");
+
+ return ts.tv_sec * (1000ULL * 1000 * 1000) + ts.tv_nsec;
+}
+
+static void do_send_one(int fdt, struct timed_send *ts)
+{
+ char control[CMSG_SPACE(sizeof(uint64_t))];
+ struct msghdr msg = {0};
+ struct iovec iov = {0};
+ struct cmsghdr *cm;
+ uint64_t tdeliver;
+ int ret;
+
+ iov.iov_base = &ts->data;
+ iov.iov_len = 1;
+
+ 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_control = &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;
+ cm->cmsg_type = SCM_TXTIME;
+ cm->cmsg_len = CMSG_LEN(sizeof(tdeliver));
+ memcpy(CMSG_DATA(cm), &tdeliver, sizeof(tdeliver));
+ }
+
+ ret = sendmsg(fdt, &msg, 0);
+ if (ret == -1)
+ error(1, errno, "write");
+ if (ret == 0)
+ error(1, 0, "write: 0B");
+
+}
+
+static void do_recv_one(int fdr, struct timed_send *ts)
+{
+ int64_t tstop, texpect;
+ char rbuf[2];
+ int ret;
+
+ ret = recv(fdr, rbuf, sizeof(rbuf), 0);
+ if (ret == -1 && errno == EAGAIN)
+ error(1, EAGAIN, "recv: timeout");
+ if (ret == -1)
+ error(1, errno, "read");
+ if (ret != 1)
+ error(1, 0, "read: %dB", ret);
+
+ 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",
+ rbuf[0], (long long)tstop, (long long)texpect);
+
+ if (rbuf[0] != ts->data) {
+ fprintf(stderr, "payload mismatch. expected %c\n", ts->data);
+ errors++;
+ }
+
+ if (llabs(tstop - texpect) > cfg_variance_us) {
+ fprintf(stderr, "exceeds variance (%d us)\n", cfg_variance_us);
+ if (!getenv("KSFT_MACHINE_SLOW"))
+ errors++;
+ }
+}
+
+static void do_recv_verify_empty(int fdr)
+{
+ char rbuf[1];
+ int ret;
+
+ ret = recv(fdr, rbuf, sizeof(rbuf), 0);
+ if (ret != -1 || errno != EAGAIN)
+ error(1, 0, "recv: not empty as expected (%d, %d)", ret, errno);
+}
+
+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;
+
+ iov.iov_base = data;
+ iov.iov_len = sizeof(data);
+
+ msg.msg_iov = &iov;
+ msg.msg_iovlen = 1;
+
+ msg.msg_control = control;
+ msg.msg_controllen = sizeof(control);
+
+ while (1) {
+ const char *reason = NULL;
+
+ ret = recvmsg(fdt, &msg, MSG_ERRQUEUE);
+ if (ret == -1 && errno == EAGAIN)
+ break;
+ if (ret == -1)
+ error(1, errno, "errqueue");
+ if (msg.msg_flags != MSG_ERRQUEUE)
+ error(1, 0, "errqueue: flags 0x%x\n", msg.msg_flags);
+
+ cm = CMSG_FIRSTHDR(&msg);
+ if (cm->cmsg_level != cfg_errq_level ||
+ cm->cmsg_type != cfg_errq_type)
+ error(1, 0, "errqueue: type 0x%x.0x%x\n",
+ cm->cmsg_level, cm->cmsg_type);
+
+ err = (struct sock_extended_err *)CMSG_DATA(cm);
+ if (err->ee_origin != SO_EE_ORIGIN_TXTIME)
+ error(1, 0, "errqueue: origin 0x%x\n", err->ee_origin);
+
+ switch (err->ee_errno) {
+ case ECANCELED:
+ if (err->ee_code != SO_EE_CODE_TXTIME_MISSED)
+ error(1, 0, "errqueue: unknown ECANCELED %u\n",
+ err->ee_code);
+ reason = "missed txtime";
+ break;
+ case EINVAL:
+ if (err->ee_code != SO_EE_CODE_TXTIME_INVALID_PARAM)
+ error(1, 0, "errqueue: unknown EINVAL %u\n",
+ err->ee_code);
+ reason = "invalid txtime";
+ break;
+ default:
+ error(1, 0, "errqueue: errno %u code %u\n",
+ err->ee_errno, err->ee_code);
+ }
+
+ tstamp = ((int64_t) err->ee_data) << 32 | err->ee_info;
+ tstamp -= (int64_t) glob_tstart;
+ tstamp /= 1000 * 1000;
+ fprintf(stderr, "send: pkt %c at %" PRId64 "ms dropped: %s\n",
+ data[ret - 1], tstamp, reason);
+
+ msg.msg_flags = 0;
+ msg.msg_controllen = sizeof(control);
+ num_tstamp++;
+ }
+
+ 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) {
+ fprintf(stderr, "FAIL: start time already passed\n");
+ if (!getenv("KSFT_MACHINE_SLOW"))
+ errors++;
+ return;
+ }
+
+ err = usleep((cfg_start_time_ns - now) / 1000);
+ if (err)
+ error(1, errno, "usleep");
+}
+
+static void setsockopt_txtime(int fd)
+{
+ struct sock_txtime so_txtime_val = { .clockid = cfg_clockid };
+ struct sock_txtime so_txtime_val_read = { 0 };
+ socklen_t vallen = sizeof(so_txtime_val);
+
+ so_txtime_val.flags = SOF_TXTIME_REPORT_ERRORS;
+
+ if (setsockopt(fd, SOL_SOCKET, SO_TXTIME,
+ &so_txtime_val, sizeof(so_txtime_val)))
+ error(1, errno, "setsockopt txtime");
+
+ if (getsockopt(fd, SOL_SOCKET, SO_TXTIME,
+ &so_txtime_val_read, &vallen))
+ error(1, errno, "getsockopt txtime");
+
+ if (vallen != sizeof(so_txtime_val) ||
+ memcmp(&so_txtime_val, &so_txtime_val_read, vallen))
+ error(1, 0, "getsockopt txtime: mismatch");
+}
+
+static int setup_tx(struct sockaddr *addr, socklen_t alen)
+{
+ int fd;
+
+ fd = socket(addr->sa_family, SOCK_DGRAM, 0);
+ if (fd == -1)
+ error(1, errno, "socket t");
+
+ if (connect(fd, addr, alen))
+ error(1, errno, "connect");
+
+ setsockopt_txtime(fd);
+
+ if (cfg_mark &&
+ setsockopt(fd, SOL_SOCKET, SO_MARK, &cfg_mark, sizeof(cfg_mark)))
+ error(1, errno, "setsockopt mark");
+
+ return fd;
+}
+
+static int setup_rx(struct sockaddr *addr, socklen_t alen)
+{
+ struct timeval tv = { .tv_usec = 100 * 1000 };
+ int fd;
+
+ fd = socket(addr->sa_family, SOCK_DGRAM, 0);
+ if (fd == -1)
+ error(1, errno, "socket r");
+
+ if (bind(fd, addr, alen))
+ error(1, errno, "bind");
+
+ if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)))
+ error(1, errno, "setsockopt rcv timeout");
+
+ return fd;
+}
+
+static void do_test_tx(struct sockaddr *addr, socklen_t alen)
+{
+ 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);
+
+ start_time_wait();
+ glob_tstart = gettime_ns(cfg_clockid);
+
+ for (i = 0; i < cfg_num_pkt; 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++)
+ do_recv_one(fdr, &cfg_buf[i]);
+
+ do_recv_verify_empty(fdr);
+
+ if (close(fdr))
+ error(1, errno, "close r");
+}
+
+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)
+{
+ char *arg, *tok;
+ int aoff = 0;
+
+ arg = strdup(optarg);
+ if (!arg)
+ error(1, errno, "strdup");
+
+ while ((tok = strtok(arg, ","))) {
+ arg = NULL; /* only pass non-zero on first call */
+
+ if (aoff / 2 == MAX_NUM_PKT)
+ error(1, 0, "exceeds max pkt count (%d)", MAX_NUM_PKT);
+
+ if (aoff & 1) { /* parse delay */
+ array->delay_us = strtol(tok, NULL, 0) * 1000;
+ array++;
+ } else { /* parse character */
+ array->data = tok[0];
+ }
+
+ aoff++;
+ }
+
+ free(arg);
+
+ 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 or tai (default)\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)
+{
+ char *daddr = NULL, *saddr = NULL;
+ int domain = PF_UNSPEC;
+ int c;
+
+ while ((c = getopt(argc, argv, "46c:S:D:rt:m:")) != -1) {
+ switch (c) {
+ case '4':
+ 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':
+ 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"))
+ cfg_clockid = CLOCK_TAI;
+ else if (!strcmp(optarg, "monotonic") ||
+ !strcmp(optarg, "mono"))
+ cfg_clockid = CLOCK_MONOTONIC;
+ 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 = strtoll(optarg, NULL, 0);
+ break;
+ case 'm':
+ cfg_mark = strtol(optarg, NULL, 0);
+ break;
+ default:
+ usage(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");
+
+ 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_rx)
+ do_test_rx((void *)&cfg_dst_addr, cfg_alen);
+ else
+ do_test_tx((void *)&cfg_src_addr, cfg_alen);
+
+ if (errors) {
+ fprintf(stderr, "FAIL: %d errors\n", errors);
+ return KSFT_FAIL;
+ }
+
+ return KSFT_PASS;
+}
--- /dev/null
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0
+
+"""Regression tests for the SO_TXTIME interface.
+
+Test delivery time in FQ and ETF qdiscs.
+"""
+
+import time
+
+from lib.py import ksft_exit, ksft_run, ksft_variants
+from lib.py import KsftNamedVariant, KsftSkipEx
+from lib.py import NetDrvEpEnv, bkg, cmd, defer, tc
+
+
+def test_so_txtime(cfg, clockid, ipver, args_tx, args_rx, expect_success):
+ """Main function. Run so_txtime as sender and receiver."""
+ bin_path = cfg.test_dir / "so_txtime"
+
+ tstart = time.time_ns() + 200_000_000
+
+ cmd_addr = f"-S {cfg.addr_v[ipver]} -D {cfg.remote_addr_v[ipver]}"
+ cmd_base = f"{bin_path} -{ipver} -c {clockid} -t {tstart} {cmd_addr}"
+ cmd_rx = f"{cmd_base} {args_rx} -r"
+ cmd_tx = f"{cmd_base} {args_tx}"
+
+ with bkg(cmd_rx, host=cfg.remote, fail=expect_success,
+ expect_fail=(not expect_success), exit_wait=True):
+ cmd(cmd_tx)
+
+
+def _qdisc_setup(ifname, qdisc, optargs=""):
+ """Replace root qdisc. Restore the original after the test.
+
+ If the original is mq, children will be of type default_qdisc.
+ """
+ orig = tc(f"qdisc show dev {ifname} root", json=True)[0].get("kind", None)
+ defer(tc, f"qdisc replace dev {ifname} root {orig}")
+ tc(f"qdisc replace dev {ifname} root {qdisc} {optargs}")
+
+
+def _test_variants_mono():
+ for ipver in ["4", "6"]:
+ for testcase in [
+ ["no_delay", "a,-1", "a,-1"],
+ ["zero_delay", "a,0", "a,0"],
+ ["one_pkt", "a,10", "a,10"],
+ ["in_order", "a,10,b,20", "a,10,b,20"],
+ ["reverse_order", "a,20,b,10", "b,20,a,20"],
+ ]:
+ name = f"v{ipver}_{testcase[0]}"
+ yield KsftNamedVariant(name, ipver, testcase[1], testcase[2])
+
+
+@ksft_variants(_test_variants_mono())
+def test_so_txtime_mono(cfg, ipver, args_tx, args_rx):
+ """Run all variants of monotonic (fq) tests."""
+ _qdisc_setup(cfg.ifname, "fq")
+ test_so_txtime(cfg, "mono", ipver, args_tx, args_rx, True)
+
+
+def _test_variants_etf():
+ for ipver in ["4", "6"]:
+ for testcase in [
+ ["no_delay", "a,-1", "a,-1", False],
+ ["zero_delay", "a,0", "a,0", False],
+ ["one_pkt", "a,10", "a,10", True],
+ ["in_order", "a,10,b,20", "a,10,b,20", True],
+ ["reverse_order", "a,20,b,10", "b,10,a,20", True],
+ ]:
+ name = f"v{ipver}_{testcase[0]}"
+ yield KsftNamedVariant(
+ name, ipver, testcase[1], testcase[2], testcase[3]
+ )
+
+
+@ksft_variants(_test_variants_etf())
+def test_so_txtime_etf(cfg, ipver, args_tx, args_rx, expect_fail):
+ """Run all variants of etf tests."""
+ try:
+ _qdisc_setup(cfg.ifname, "etf", "clockid CLOCK_TAI delta 400000")
+ except Exception as e:
+ raise KsftSkipEx("tc does not support qdisc etf. skipping") from e
+
+ test_so_txtime(cfg, "tai", ipver, args_tx, args_rx, expect_fail)
+
+
+def main() -> None:
+ """Boilerplate ksft main."""
+ with NetDrvEpEnv(__file__) as cfg:
+ ksft_run([test_so_txtime_mono, test_so_txtime_etf], args=(cfg,))
+ ksft_exit()
+
+
+if __name__ == "__main__":
+ main()
socket
so_incoming_cpu
so_netns_cookie
-so_txtime
so_rcv_listener
stress_reuseport_listen
tap
rxtimestamp.sh \
sctp_vrf.sh \
skf_net_off.sh \
- so_txtime.sh \
srv6_end_dt46_l3vpn_test.sh \
srv6_end_dt4_l3vpn_test.sh \
srv6_end_dt6_l3vpn_test.sh \
skf_net_off \
so_netns_cookie \
so_rcv_listener \
- so_txtime \
socket \
stress_reuseport_listen \
tcp_fastopen_backup_key \
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Test the SO_TXTIME API
- *
- * 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 <arpa/inet.h>
-#include <error.h>
-#include <errno.h>
-#include <inttypes.h>
-#include <linux/net_tstamp.h>
-#include <linux/errqueue.h>
-#include <linux/if_ether.h>
-#include <linux/ipv6.h>
-#include <linux/udp.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <time.h>
-#include <unistd.h>
-#include <poll.h>
-
-static int cfg_clockid = CLOCK_TAI;
-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 {
- char data;
- int64_t delay_us;
-};
-
-#define MAX_NUM_PKT 8
-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 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(clock, &ts))
- error(1, errno, "gettime");
-
- return ts.tv_sec * (1000ULL * 1000 * 1000) + ts.tv_nsec;
-}
-
-static void do_send_one(int fdt, struct timed_send *ts)
-{
- char control[CMSG_SPACE(sizeof(uint64_t))];
- struct msghdr msg = {0};
- struct iovec iov = {0};
- struct cmsghdr *cm;
- uint64_t tdeliver;
- int ret;
-
- iov.iov_base = &ts->data;
- iov.iov_len = 1;
-
- 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_control = &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;
- cm->cmsg_type = SCM_TXTIME;
- cm->cmsg_len = CMSG_LEN(sizeof(tdeliver));
- memcpy(CMSG_DATA(cm), &tdeliver, sizeof(tdeliver));
- }
-
- ret = sendmsg(fdt, &msg, 0);
- if (ret == -1)
- error(1, errno, "write");
- if (ret == 0)
- error(1, 0, "write: 0B");
-
-}
-
-static void do_recv_one(int fdr, struct timed_send *ts)
-{
- int64_t tstop, texpect;
- char rbuf[2];
- int ret;
-
- ret = recv(fdr, rbuf, sizeof(rbuf), 0);
- if (ret == -1 && errno == EAGAIN)
- error(1, EAGAIN, "recv: timeout");
- if (ret == -1)
- error(1, errno, "read");
- if (ret != 1)
- error(1, 0, "read: %dB", ret);
-
- 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",
- rbuf[0], (long long)tstop, (long long)texpect);
-
- if (rbuf[0] != ts->data)
- error(1, 0, "payload mismatch. expected %c", ts->data);
-
- if (llabs(tstop - texpect) > cfg_variance_us) {
- fprintf(stderr, "exceeds variance (%d us)\n", cfg_variance_us);
- if (!getenv("KSFT_MACHINE_SLOW"))
- exit(1);
- }
-}
-
-static void do_recv_verify_empty(int fdr)
-{
- char rbuf[1];
- int ret;
-
- ret = recv(fdr, rbuf, sizeof(rbuf), 0);
- if (ret != -1 || errno != EAGAIN)
- error(1, 0, "recv: not empty as expected (%d, %d)", ret, errno);
-}
-
-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;
-
- iov.iov_base = data;
- iov.iov_len = sizeof(data);
-
- msg.msg_iov = &iov;
- msg.msg_iovlen = 1;
-
- msg.msg_control = control;
- msg.msg_controllen = sizeof(control);
-
- while (1) {
- const char *reason = NULL;
-
- ret = recvmsg(fdt, &msg, MSG_ERRQUEUE);
- if (ret == -1 && errno == EAGAIN)
- break;
- if (ret == -1)
- error(1, errno, "errqueue");
- if (msg.msg_flags != MSG_ERRQUEUE)
- error(1, 0, "errqueue: flags 0x%x\n", msg.msg_flags);
-
- cm = CMSG_FIRSTHDR(&msg);
- if (cm->cmsg_level != cfg_errq_level ||
- cm->cmsg_type != cfg_errq_type)
- error(1, 0, "errqueue: type 0x%x.0x%x\n",
- cm->cmsg_level, cm->cmsg_type);
-
- err = (struct sock_extended_err *)CMSG_DATA(cm);
- if (err->ee_origin != SO_EE_ORIGIN_TXTIME)
- error(1, 0, "errqueue: origin 0x%x\n", err->ee_origin);
-
- switch (err->ee_errno) {
- case ECANCELED:
- if (err->ee_code != SO_EE_CODE_TXTIME_MISSED)
- error(1, 0, "errqueue: unknown ECANCELED %u\n",
- err->ee_code);
- reason = "missed txtime";
- break;
- case EINVAL:
- if (err->ee_code != SO_EE_CODE_TXTIME_INVALID_PARAM)
- error(1, 0, "errqueue: unknown EINVAL %u\n",
- err->ee_code);
- reason = "invalid txtime";
- break;
- default:
- error(1, 0, "errqueue: errno %u code %u\n",
- err->ee_errno, err->ee_code);
- }
-
- tstamp = ((int64_t) err->ee_data) << 32 | err->ee_info;
- tstamp -= (int64_t) glob_tstart;
- tstamp /= 1000 * 1000;
- fprintf(stderr, "send: pkt %c at %" PRId64 "ms dropped: %s\n",
- data[ret - 1], tstamp, reason);
-
- msg.msg_flags = 0;
- msg.msg_controllen = sizeof(control);
- num_tstamp++;
- }
-
- 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)
-{
- struct sock_txtime so_txtime_val = { .clockid = cfg_clockid };
- struct sock_txtime so_txtime_val_read = { 0 };
- socklen_t vallen = sizeof(so_txtime_val);
-
- so_txtime_val.flags = SOF_TXTIME_REPORT_ERRORS;
-
- if (setsockopt(fd, SOL_SOCKET, SO_TXTIME,
- &so_txtime_val, sizeof(so_txtime_val)))
- error(1, errno, "setsockopt txtime");
-
- if (getsockopt(fd, SOL_SOCKET, SO_TXTIME,
- &so_txtime_val_read, &vallen))
- error(1, errno, "getsockopt txtime");
-
- if (vallen != sizeof(so_txtime_val) ||
- memcmp(&so_txtime_val, &so_txtime_val_read, vallen))
- error(1, 0, "getsockopt txtime: mismatch");
-}
-
-static int setup_tx(struct sockaddr *addr, socklen_t alen)
-{
- int fd;
-
- fd = socket(addr->sa_family, SOCK_DGRAM, 0);
- if (fd == -1)
- error(1, errno, "socket t");
-
- if (connect(fd, addr, alen))
- error(1, errno, "connect");
-
- setsockopt_txtime(fd);
-
- if (cfg_mark &&
- setsockopt(fd, SOL_SOCKET, SO_MARK, &cfg_mark, sizeof(cfg_mark)))
- error(1, errno, "setsockopt mark");
-
- return fd;
-}
-
-static int setup_rx(struct sockaddr *addr, socklen_t alen)
-{
- struct timeval tv = { .tv_usec = 100 * 1000 };
- int fd;
-
- fd = socket(addr->sa_family, SOCK_DGRAM, 0);
- if (fd == -1)
- error(1, errno, "socket r");
-
- if (bind(fd, addr, alen))
- error(1, errno, "bind");
-
- if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)))
- error(1, errno, "setsockopt rcv timeout");
-
- return fd;
-}
-
-static void do_test_tx(struct sockaddr *addr, socklen_t alen)
-{
- 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);
-
- start_time_wait();
- glob_tstart = gettime_ns(cfg_clockid);
-
- for (i = 0; i < cfg_num_pkt; 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++)
- do_recv_one(fdr, &cfg_buf[i]);
-
- do_recv_verify_empty(fdr);
-
- if (close(fdr))
- error(1, errno, "close r");
-}
-
-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)
-{
- char *arg, *tok;
- int aoff = 0;
-
- arg = strdup(optarg);
- if (!arg)
- error(1, errno, "strdup");
-
- while ((tok = strtok(arg, ","))) {
- arg = NULL; /* only pass non-zero on first call */
-
- if (aoff / 2 == MAX_NUM_PKT)
- error(1, 0, "exceeds max pkt count (%d)", MAX_NUM_PKT);
-
- if (aoff & 1) { /* parse delay */
- array->delay_us = strtol(tok, NULL, 0) * 1000;
- array++;
- } else { /* parse character */
- array->data = tok[0];
- }
-
- aoff++;
- }
-
- free(arg);
-
- 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 or tai (default)\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)
-{
- char *daddr = NULL, *saddr = NULL;
- int domain = PF_UNSPEC;
- int c;
-
- while ((c = getopt(argc, argv, "46c:S:D:rt:m:")) != -1) {
- switch (c) {
- case '4':
- 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':
- 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"))
- cfg_clockid = CLOCK_TAI;
- else if (!strcmp(optarg, "monotonic") ||
- !strcmp(optarg, "mono"))
- cfg_clockid = CLOCK_MONOTONIC;
- 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 = strtoll(optarg, NULL, 0);
- break;
- case 'm':
- cfg_mark = strtol(optarg, NULL, 0);
- break;
- default:
- usage(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");
-
- 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_rx)
- do_test_rx((void *)&cfg_dst_addr, cfg_alen);
- else
- do_test_tx((void *)&cfg_src_addr, cfg_alen);
-
- return 0;
-}
+++ /dev/null
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
-#
-# Regression tests for the SO_TXTIME interface
-
-set -e
-
-readonly ksft_skip=4
-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
-
-run_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 ${IP}"
- exit 1
- fi
-
- local readonly START="$(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 "$!"
-}
-
-do_test() {
- run_test $@
- [ $? -ne 0 ] && ret=1
-}
-
-do_fail_test() {
- run_test $@
- [ $? -eq 0 ] && ret=1
-}
-
-ip netns exec "${NS1}" tc qdisc add dev "${DEV}" root fq
-set +e
-ret=0
-do_test 4 mono a,-1 a,-1
-do_test 6 mono a,0 a,0
-do_test 6 mono a,10 a,10
-do_test 4 mono a,10,b,20 a,10,b,20
-do_test 6 mono a,20,b,10 b,20,a,20
-
-if ip netns exec "${NS1}" tc qdisc replace dev "${DEV}" root etf clockid CLOCK_TAI delta 400000; then
- do_fail_test 4 tai a,-1 a,-1
- do_fail_test 6 tai a,0 a,0
- do_test 6 tai a,10 a,10
- do_test 4 tai a,10,b,20 a,10,b,20
- do_test 6 tai a,20,b,10 b,10,a,20
-else
- echo "tc ($(tc -V)) does not support qdisc etf. skipping"
- [ $ret -eq 0 ] && ret=$ksft_skip
-fi
-
-if [ $ret -eq 0 ]; then
- echo OK. All tests passed
-elif [[ $ret -ne $ksft_skip && -n "$KSFT_MACHINE_SLOW" ]]; then
- echo "Ignoring errors due to slow environment" 1>&2
- ret=0
-fi
-exit $ret
projects / linux / commitdiff