double latency;
uint32_t dropped;
int recv_ttl;
+ uint8_t recv_qos;
char *data;
void *context;
double timeout;
int ttl;
int addrfamily;
+ uint8_t qos;
char *data;
struct sockaddr *srcaddr;
ident, seq);
}
- if (ptr != NULL)
- ptr->recv_ttl = ip_hdr->ip_ttl;
-
+ if (ptr != NULL){
+ ptr->recv_ttl = (int) ip_hdr->ip_ttl;
+ ptr->recv_qos = (uint8_t) ip_hdr->ip_tos;
+ }
return (ptr);
}
struct timeval diff;
pinghost_t *host = NULL;
int recv_ttl;
+ uint8_t recv_qos;
/*
* Set up the receive buffer..
/* Iterate over all auxiliary data in msghdr */
recv_ttl = -1;
+ recv_qos = 0xff;
for (cmsg = CMSG_FIRSTHDR (&msghdr); /* {{{ */
cmsg != NULL;
cmsg = CMSG_NXTHDR (&msghdr, cmsg))
if (cmsg->cmsg_level != IPPROTO_IP)
continue;
+ if (cmsg->cmsg_type == IP_TOS)
+ {
+ memcpy (&recv_qos, CMSG_DATA (cmsg),
+ sizeof (recv_qos));
+ dprintf ("TOSv4 = 0x%02"PRIx8";\n", recv_qos);
+ } else
if (cmsg->cmsg_type == IP_TTL)
{
memcpy (&recv_ttl, CMSG_DATA (cmsg),
if (cmsg->cmsg_level != IPPROTO_IPV6)
continue;
+ if (cmsg->cmsg_type == IPV6_TCLASS)
+ {
+ memcpy (&recv_qos, CMSG_DATA (cmsg),
+ sizeof (recv_qos));
+ dprintf ("TOSv6 = 0x%02"PRIx8";\n", recv_qos);
+ } else
if (cmsg->cmsg_type == IPV6_HOPLIMIT)
{
memcpy (&recv_ttl, CMSG_DATA (cmsg),
if (recv_ttl >= 0)
host->recv_ttl = recv_ttl;
+ if (recv_qos != 0xffff)
+ host->recv_qos = recv_qos;
host->latency = ((double) diff.tv_usec) / 1000.0;
host->latency += ((double) diff.tv_sec) * 1000.0;
return (ret);
}
+/*
+ * Set the TOS of a socket protocol independently.
+ *
+ * Using SOL_SOCKET / SO_PRIORITY might be a protocol independent way to
+ * set this. See socket(7) for details.
+ */
+static int ping_set_qos (pingobj_t *obj, pinghost_t *ph, uint8_t qos)
+{
+ int ret = EINVAL;
+ char errbuf[PING_ERRMSG_LEN];
+
+ if (ph->addrfamily == AF_INET)
+ {
+ dprintf ("Setting TP_TOS to %#04"PRIx8"\n", qos);
+ ret = setsockopt (ph->fd, IPPROTO_IP, IP_TOS,
+ &qos, sizeof (qos));
+ if (ret != 0)
+ {
+ ret = errno;
+ ping_set_error (obj, "ping_set_qos",
+ sstrerror (ret, errbuf, sizeof (errbuf)));
+ dprintf ("Setting TP_TOS failed: %s\n", errbuf);
+ }
+ }
+ else if (ph->addrfamily == AF_INET6)
+ {
+ /* IPV6_TCLASS requires an "int". */
+ int tmp = (int) qos;
+
+ dprintf ("Setting IPV6_TCLASS to %#04"PRIx8" (%i)\n", qos, tmp);
+ ret = setsockopt (ph->fd, IPPROTO_IPV6, IPV6_TCLASS,
+ &tmp, sizeof (tmp));
+ if (ret != 0)
+ {
+ ret = errno;
+ ping_set_error (obj, "ping_set_qos",
+ sstrerror (ret, errbuf, sizeof (errbuf)));
+ dprintf ("Setting IPV6_TCLASS failed: %s\n", errbuf);
+ }
+ }
+
+ return (ret);
+}
+
static int ping_get_ident (void)
{
int fd;
if ((obj = (pingobj_t *) malloc (sizeof (pingobj_t))) == NULL)
return (NULL);
- memset (obj, '\0', sizeof (pingobj_t));
+ memset (obj, 0, sizeof (pingobj_t));
obj->timeout = PING_DEF_TIMEOUT;
obj->ttl = PING_DEF_TTL;
obj->addrfamily = PING_DEF_AF;
obj->data = strdup (PING_DEF_DATA);
+ obj->qos = 0;
return (obj);
}
switch (option)
{
+ case PING_OPT_QOS:
+ {
+ pinghost_t *ph;
+
+ obj->qos = *((uint8_t *) value);
+ for (ph = obj->head; ph != NULL; ph = ph->next)
+ ping_set_qos (obj, ph, obj->qos);
+ break;
+ }
+
case PING_OPT_TIMEOUT:
obj->timeout = *((double *) value);
if (obj->timeout < 0.0)
if (ph->addrfamily == AF_INET)
{
- int opt = 1;
+ int opt;
+
+ /* Enable receiving the TOS field */
+ opt = 1;
+ setsockopt (ph->fd, IPPROTO_IP, IP_RECVTOS,
+ &opt, sizeof (opt));
+ /* Enable receiving the TTL field */
+ opt = 1;
setsockopt (ph->fd, IPPROTO_IP, IP_RECVTTL,
&opt, sizeof (opt));
}
-#if defined(IPPROTO_IPV6) && defined(IPV6_RECVHOPLIMIT)
+#if defined(IPV6_RECVHOPLIMIT) || defined(IPV6_RECVTCLASS)
else if (ph->addrfamily == AF_INET6)
{
- int opt = 1;
+ int opt;
+# if defined(IPV6_RECVHOPLIMIT)
+ /* For details see RFC 3542, section 6.3. */
+ opt = 1;
setsockopt (ph->fd, IPPROTO_IPV6, IPV6_RECVHOPLIMIT,
&opt, sizeof (opt));
+# endif /* IPV6_RECVHOPLIMIT */
+
+# if defined(IPV6_RECVTCLASS)
+ /* For details see RFC 3542, section 6.5. */
+ opt = 1;
+ setsockopt (ph->fd, IPPROTO_IPV6, IPV6_RECVTCLASS,
+ &opt, sizeof (opt));
+# endif /* IPV6_RECVTCLASS */
}
-#endif
+#endif /* IPV6_RECVHOPLIMIT || IPV6_RECVTCLASS */
break;
- }
+ } /* for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next) */
freeaddrinfo (ai_list);
}
ping_set_ttl (ph, obj->ttl);
+ ping_set_qos (obj, ph, obj->qos);
return (0);
} /* int ping_host_add */
*((int *) buffer) = iter->recv_ttl;
ret = 0;
break;
+
+ case PING_INFO_RECV_QOS:
+ ret = ENOMEM;
+ if (*buffer_len>sizeof(unsigned)) *buffer_len=sizeof(unsigned);
+ if (!*buffer_len) *buffer_len=1;
+ if (orig_buffer_len < *buffer_len)
+ break;
+ memcpy(buffer,&iter->recv_qos,*buffer_len);
+ ret = 0;
+ break;
}
return (ret);
"-" (i.E<nbsp>e. standard input). This is meant to avoid security issues when
I<oping> is installed with the SUID-bit.
+=item B<-Q> I<qos>
+
+Specify the I<Quality of Service> (QoS) for outgoing packets. This is a
+somewhat tricky option, since the meaning of the bits in the IPv4 header has
+been revised several times.
+
+The currently recommended method is I<Differentiated Services> which is used in
+IPv6 headers as well. There are shortcuts for 13E<nbsp>predefined
+I<per-hop behaviors> (PHBs):
+
+=over 4
+
+=item B<be>
+
+Selects the I<Best Effort> behavior. This is the default behavior.
+
+=item B<ef>
+
+Selects the I<Expedited Forwarding> (EF) per-hop behavior, as defined in
+I<RFCE<nbsp>3246>. This PHB is characterised by low delay, low loss and low
+jitter, i.e. high priority traffic.
+
+=item B<af>I<c>I<p>
+
+Selects one of 12E<nbsp>differentiated services code points (DSCPs), which are
+organized in four I<classes> with three I<priorities> each. Therefore, I<c>
+must be a number betweenE<nbsp>1 throughE<nbsp>4 and I<p> must be a number
+betweenE<nbsp>1 throughE<nbsp>3, for example "af13", "af22" and "af41". In each
+class, the lower priority number takes precedence over the higher priority
+number.
+
+=item B<cs>I<n>
+
+Selects one of the eight I<Class Selector> PHBs. I<n> is a number
+betweenE<nbsp>0 throughE<nbsp>7. The class selectors have been defined to be
+compatible to the I<Precedence> field in the IPv4 header as defined in
+I<RFCE<nbsp>791>. Please note that "cs0" is synonymous to "be".
+
+=back
+
+The old definition of the same bits in the IPv4 header was as I<Type of
+Service> (ToS) field, specified in I<RFCE<nbsp>1349>. It defined four possible
+values which have appropriate aliases. Please note that this use of the bits is
+B<deprecated> and the meaning is limited to IPv4!
+
+=over 4
+
+=item B<lowdelay>
+
+Minimize delay
+
+=item B<throughput>
+
+Maximize throughput
+
+=item B<reliability>
+
+Maximize reliability
+
+=item B<mincost>
+
+Minimize monetary cost
+
+=back
+
+Alternatively, you can also specify the byte manually. You can use either a
+decimal number (0-255), a hexadecimal number (0x00-0xff) or an octal number
+(00-0377) using the usual "0x" and "0" prefixes for hexadecimal and octal
+respectively.
+
+The printed lines will contain information about the QoS field of received
+packets if either a non-standard QoS setting was used on outgoing packets or if
+the QoS byte of incoming packets is not zero. In other words, the QoS
+information is omitted if both, the outgoing and the incoming QoS bytes are
+zero. The received byte is always interpreted as
+I<Differentiated Services Code Point> (DSCP) and
+I<Explicit Congestion Notification> (ECN), even if the deprecated
+I<Type of Service> (ToS) aliases were used to specify the bits of outgoing
+packets.
+
=back
=head1 COLORS
# include <stdlib.h>
# include <stdio.h>
# include <string.h>
+# include <stdint.h>
+# include <inttypes.h>
# include <errno.h>
# include <assert.h>
#else
# endif
#endif
+#if HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#if HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#if HAVE_NETINET_IP_H
+# include <netinet/ip.h>
+#endif
+
#if HAVE_NETDB_H
# include <netdb.h> /* NI_MAXHOST */
#endif
static char *opt_filename = NULL;
static int opt_count = -1;
static int opt_send_ttl = 64;
+static uint8_t opt_send_qos = 0;
static int host_num = 0;
" -c count number of ICMP packets to send\n"
" -i interval interval with which to send ICMP packets\n"
" -t ttl time to live for each ICMP packet\n"
+ " -Q qos Quality of Service (QoS) of outgoing packets\n"
+ " Use \"-Q help\" for a list of valid options.\n"
" -I srcaddr source address\n"
" -D device outgoing interface name\n"
" -f filename filename to read hosts from\n"
exit (status);
} /* }}} void usage_exit */
+static void usage_qos_exit (const char *arg, int status) /* {{{ */
+{
+ if (arg != 0)
+ fprintf (stderr, "Invalid QoS argument: \"%s\"\n\n", arg);
+
+ fprintf (stderr, "Valid QoS arguments (option \"-Q\") are:\n"
+ "\n"
+ " Differentiated Services (IPv4 and IPv6, RFC 2474)\n"
+ "\n"
+ " be Best Effort (BE, default PHB).\n"
+ " ef Expedited Forwarding (EF) PHB group (RFC 3246).\n"
+ " (low delay, low loss, low jitter)\n"
+ " af[1-4][1-3] Assured Forwarding (AF) PHB group (RFC 2597).\n"
+ " For example: \"af12\" (class 1, precedence 2)\n"
+ " cs[0-7] Class Selector (CS) PHB group (RFC 2474).\n"
+ " For example: \"cs1\" (priority traffic)\n"
+ "\n"
+ " Type of Service (IPv4, RFC 1349, obsolete)\n"
+ "\n"
+ " lowdelay (%#04x) minimize delay\n"
+ " throughput (%#04x) maximize throughput\n"
+ " reliability (%#04x) maximize reliability\n"
+ " mincost (%#04x) minimize monetary cost\n"
+ "\n"
+ " Specify manually\n"
+ "\n"
+ " 0x00 - 0xff Hexadecimal numeric specification.\n"
+ " 0 - 255 Decimal numeric specification.\n"
+ "\n",
+ (unsigned int) IPTOS_LOWDELAY,
+ (unsigned int) IPTOS_THROUGHPUT,
+ (unsigned int) IPTOS_RELIABILITY,
+ (unsigned int) IPTOS_MINCOST);
+
+ exit (status);
+} /* }}} void usage_qos_exit */
+
+static int set_opt_send_qos (const char *opt) /* {{{ */
+{
+ if (opt == NULL)
+ return (EINVAL);
+
+ if (strcasecmp ("help", opt) == 0)
+ usage_qos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS);
+ /* DiffServ (RFC 2474): */
+ /* - Best effort (BE) */
+ else if (strcasecmp ("be", opt) == 0)
+ opt_send_qos = 0;
+ /* - Expedited Forwarding (EF, RFC 3246) */
+ else if (strcasecmp ("ef", opt) == 0)
+ opt_send_qos = 0xB8; /* == 0x2E << 2 */
+ /* - Assured Forwarding (AF, RFC 2597) */
+ else if ((strncasecmp ("af", opt, strlen ("af")) == 0)
+ && (strlen (opt) == 4))
+ {
+ uint8_t dscp;
+ uint8_t class;
+ uint8_t prec;
+
+ /* There are four classes, AF1x, AF2x, AF3x, and AF4x. */
+ if (opt[2] == '1')
+ class = 1;
+ else if (opt[2] == '2')
+ class = 2;
+ else if (opt[2] == '3')
+ class = 3;
+ else if (opt[2] == '4')
+ class = 4;
+ else
+ usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
+
+ /* In each class, there are three precedences, AFx1, AFx2, and AFx3 */
+ if (opt[3] == '1')
+ prec = 1;
+ else if (opt[3] == '2')
+ prec = 2;
+ else if (opt[3] == '3')
+ prec = 3;
+ else
+ usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
+
+ dscp = (8 * class) + (2 * prec);
+ /* The lower two bits are used for Explicit Congestion Notification (ECN) */
+ opt_send_qos = dscp << 2;
+ }
+ /* - Class Selector (CS) */
+ else if ((strncasecmp ("cs", opt, strlen ("cs")) == 0)
+ && (strlen (opt) == 3))
+ {
+ uint8_t class;
+
+ if ((opt[2] < '0') || (opt[2] > '7'))
+ usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
+
+ /* Not exactly legal by the C standard, but I don't know of any
+ * system not supporting this hack. */
+ class = ((uint8_t) opt[2]) - ((uint8_t) '0');
+ opt_send_qos = class << 5;
+ }
+ /* Type of Service (RFC 1349) */
+ else if (strcasecmp ("lowdelay", opt) == 0)
+ opt_send_qos = IPTOS_LOWDELAY;
+ else if (strcasecmp ("throughput", opt) == 0)
+ opt_send_qos = IPTOS_THROUGHPUT;
+ else if (strcasecmp ("reliability", opt) == 0)
+ opt_send_qos = IPTOS_RELIABILITY;
+ else if (strcasecmp ("mincost", opt) == 0)
+ opt_send_qos = IPTOS_MINCOST;
+ /* Numeric value */
+ else
+ {
+ unsigned long value;
+ char *endptr;
+
+ errno = 0;
+ endptr = NULL;
+ value = strtoul (opt, &endptr, /* base = */ 0);
+ if ((errno != 0) || (endptr == opt)
+ || (endptr == NULL) || (*endptr != 0)
+ || (value > 0xff))
+ usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
+
+ opt_send_qos = (uint8_t) value;
+ }
+
+ return (0);
+} /* }}} int set_opt_send_qos */
+
+static char *format_qos (uint8_t qos, char *buffer, size_t buffer_size) /* {{{ */
+{
+ uint8_t dscp;
+ uint8_t ecn;
+ char *dscp_str;
+ char *ecn_str;
+
+ dscp = qos >> 2;
+ ecn = qos & 0x03;
+
+ switch (dscp)
+ {
+ case 0x00: dscp_str = "be"; break;
+ case 0x2e: dscp_str = "ef"; break;
+ case 0x0a: dscp_str = "af11"; break;
+ case 0x0c: dscp_str = "af12"; break;
+ case 0x0e: dscp_str = "af13"; break;
+ case 0x12: dscp_str = "af21"; break;
+ case 0x14: dscp_str = "af22"; break;
+ case 0x16: dscp_str = "af23"; break;
+ case 0x1a: dscp_str = "af31"; break;
+ case 0x1c: dscp_str = "af32"; break;
+ case 0x1e: dscp_str = "af33"; break;
+ case 0x22: dscp_str = "af41"; break;
+ case 0x24: dscp_str = "af42"; break;
+ case 0x26: dscp_str = "af43"; break;
+ case 0x08: dscp_str = "cs1"; break;
+ case 0x10: dscp_str = "cs2"; break;
+ case 0x18: dscp_str = "cs3"; break;
+ case 0x20: dscp_str = "cs4"; break;
+ case 0x28: dscp_str = "cs5"; break;
+ case 0x30: dscp_str = "cs6"; break;
+ case 0x38: dscp_str = "cs7"; break;
+ default: dscp_str = NULL;
+ }
+
+ switch (ecn)
+ {
+ case 0x01: ecn_str = ",ecn(1)"; break;
+ case 0x02: ecn_str = ",ecn(0)"; break;
+ case 0x03: ecn_str = ",ce"; break;
+ default: ecn_str = "";
+ }
+
+ if (dscp_str == NULL)
+ snprintf (buffer, buffer_size, "0x%02x%s", dscp, ecn_str);
+ else
+ snprintf (buffer, buffer_size, "%s%s", dscp_str, ecn_str);
+ buffer[buffer_size - 1] = 0;
+
+ return (buffer);
+} /* }}} char *format_qos */
+
static int read_options (int argc, char **argv) /* {{{ */
{
int optchar;
while (1)
{
- optchar = getopt (argc, argv, "46c:hi:I:t:f:D:");
+ optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:");
if (optchar == -1)
break;
break;
}
+ case 'Q':
+ set_opt_send_qos (optarg);
+ break;
+
case 'h':
usage_exit (argv[0], 0);
break;
double latency;
unsigned int sequence;
int recv_ttl;
+ uint8_t recv_qos;
+ char recv_qos_str[16];
size_t buffer_len;
size_t data_len;
ping_context_t *context;
ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
&recv_ttl, &buffer_len);
+ recv_qos = 0;
+ buffer_len = sizeof (recv_qos);
+ ping_iterator_get_info (iter, PING_INFO_RECV_QOS,
+ &recv_qos, &buffer_len);
+
data_len = 0;
ping_iterator_get_info (iter, PING_INFO_DATA,
NULL, &data_len);
|| (latency > (average + stddev)))
color = OPING_YELLOW;
- HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i "
- "time=",
+ HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
data_len, context->host, context->addr,
- sequence, recv_ttl);
+ sequence, recv_ttl,
+ format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
+ if ((recv_qos != 0) || (opt_send_qos != 0))
+ {
+ HOST_PRINTF ("qos=%s ",
+ format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
+ }
+ HOST_PRINTF ("time=");
wattron (main_win, COLOR_PAIR(color));
HOST_PRINTF ("%.2f", latency);
wattroff (main_win, COLOR_PAIR(color));
else
{
#endif
- HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i "
- "time=%.2f ms\n",
+ HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
data_len,
context->host, context->addr,
- sequence, recv_ttl, latency);
+ sequence, recv_ttl);
+ if ((recv_qos != 0) || (opt_send_qos != 0))
+ {
+ HOST_PRINTF ("qos=%s ",
+ format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
+ }
+ HOST_PRINTF ("time=%.2f ms\n", latency);
#if USE_NCURSES
}
#endif
opt_send_ttl, ping_get_error (ping));
}
+ if (ping_setopt (ping, PING_OPT_QOS, &opt_send_qos) != 0)
+ {
+ fprintf (stderr, "Setting TOS to %i failed: %s\n",
+ opt_send_qos, ping_get_error (ping));
+ }
+
{
double temp_sec;
double temp_nsec;
projects / liboping.git / commitdiff