#include <errno.h>
+#include <error.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <pthread.h>
#include <string.h>
#include <stdlib.h>
+#include <stdbool.h>
+#include "common.h"
+#include <semaphore.h>
+#include <sys/ioctl.h>
+#include <net/if.h>
-/*#define AC_VO 0
-#define AC_VI 1
-#define AC_BE 2
-#define AC_BK 3
-*/
+#ifdef WITH_FWP
+#include <fwp_confdefs.h>
+#include <fwp.h>
+#include <fwp_vres.h>
+#include <ncurses.h>
+#endif
+
+#define MAX_STREAMS 10
+#define MIN_GRANULARITY 100
+
+unsigned opt_packet_size = 800;
+int opt_send_buf_size = -1;
+unsigned opt_period_usec = 10*MSEC_TO_USEC;
+char *opt_interface;
+unsigned opt_jitter = 0;
+char *opt_output = "delay_stats";
+unsigned opt_count_sec = 0;
+unsigned opt_def_bandwidth = 50;
+unsigned opt_def_period_msec = 0;
+int opt_granularity_usec = MIN_GRANULARITY;
+bool opt_wait_for_queue_is_full; /* Don't gather any statistics until any queue is full */
+char *opt_comment = NULL;
+
+bool some_queue_is_full = false;
+struct timespec reset_timestamp;
-#define PARAM_SERVERADDR 1
-#define BASE_PORT 5100
-#define AC_QUEUES 4
-#define MAX_SENDENDPOINTS 10
-#define MTU 800
+bool some_contract_not_accepted = false;
+/* Locked when some queue is full to prevent multiple resets of
+ statstics. */
+pthread_mutex_t queue_full_mutex = PTHREAD_MUTEX_INITIALIZER;
-enum { AC_VO = 0,
- AC_VI = 1,
- AC_BE = 2,
- AC_BK = 3
+int ac_sockfd[AC_NUM];
+
+struct receiver {
+ bool valid;
+ pthread_t thread;
+ unsigned received, last_received;
};
-const int prio_to_ac[8] = {2,3,3,2,1,1,0,0};
-const unsigned int ac_to_tos[4] = {224,160,96,64};
+struct receiver receivers[AC_NUM];
-int ac_sockfd[AC_QUEUES];
FILE* logfd;
char* server_addr;
+char logfname[100];
-const char logfname[] = "delay_stats.dat";
+/* maximal traffic delay in ms - 10 s*/
+#define MAX_DELAY_US 10000000
-struct msg_t {
- unsigned int tos;
- struct timespec send_timestamp;
- unsigned long int seqn;
- unsigned char padding[MTU];
+struct delay_stat {
+ unsigned csc; /* Client-server-client delay divided by 2 */
+ unsigned cs; /* Client-server delay */
+ unsigned sc; /* Server-client delay */
};
-/* maximal traffic delay in ms */
-#define MAX_DELAY 10000
-#define GRANULARITY 10
-
-unsigned short int delay_stats[AC_QUEUES][MAX_DELAY/GRANULARITY];
+struct delay_stat delay_stats[AC_NUM][MAX_DELAY_US/MIN_GRANULARITY];
+pthread_mutex_t delay_stats_mutex = PTHREAD_MUTEX_INITIALIZER;
-/*struct ac_stats[AC_QUEUES] {
+/*struct ac_stats[AC_NUM] {
unsigned long int min_trans_time;
unsigned long int sum_trans_time;
struct timespec recv_timestamp;
struct timespec send_timestamp;
};*/
-struct send_endpoint {
- int ac;
- long period_nsec;
+struct stream {
+ /* Input parameters */
+ enum ac ac; /* */
int bandwidth_bps; /* bits per second */
-};
+ int jitter; /* percent */
+ /* Mulualy exclusive input parameters */
+ int packet_size;
+ long period_usec; /* all time units are in microseconds */
-#define MSEC (1000*1000)
-#define Mbit (1000*1000)
-#define Kbit 1000
+ /* Internal fields */
+#ifndef WITH_FWP
+ struct sockaddr_in rem_addr;
+#else
+ fwp_contract_d_t contract_send;
+ fwp_contract_d_t contract_resp;
+ fwp_endpoint_d_t endpoint;
+ fwp_endpoint_d_t resp_endpoint;
+ fwp_vres_d_t vres;
+ uint16_t resp_port;
+ struct receiver receiver;
+ long wc_delay; /* worst-case delay */
+#endif
+ /* Statistics */
+ pthread_mutex_t mutex;
+ unsigned long long sent, really_sent, received;
+};
+static struct cmsg_ipi {
+ struct cmsghdr cm;
+ struct in_pktinfo ipi;
+} cmsg = { {sizeof(struct cmsg_ipi), SOL_IP, IP_PKTINFO},
+ {0, }};
+int cmsg_len = 0;
+
+/*
struct send_endpoint sepoint[] = {
- { .ac = AC_VO, .period_nsec=200*MSEC, .bandwidth_bps = 34*Kbit },
- { .ac = AC_VI, .period_nsec=25*MSEC, .bandwidth_bps = 480*Kbit },
- { .ac = AC_BE, .period_nsec=40*MSEC, .bandwidth_bps = 300*Kbit },
- { .ac = AC_BK, .period_nsec=40*MSEC, .bandwidth_bps = 300*Kbit },
-// { .ac = AC_VI, .period_nsec=17*MSEC, .bandwidth_bps = 675*Kbit },
+ { .ac = AC_VO, .period_usec=200*MSEC_TO_USEC, .bandwidth_bps = 34*Kbit },
+ { .ac = AC_VI, .period_usec=25*MSEC_TO_USEC, .bandwidth_bps = 480*Kbit },
+ { .ac = AC_BE, .period_usec=40*MSEC_TO_USEC, .bandwidth_bps = 300*Kbit },
+ { .ac = AC_BK, .period_usec=40*MSEC_TO_USEC, .bandwidth_bps = 300*Kbit },
+// { .ac = AC_VI, .period_usec=17*MSEC_TO_USEC, .bandwidth_bps = 675*Kbit },
};
+*/
+
+struct stream streams[MAX_STREAMS];
-unsigned int nr_sepoints = sizeof(sepoint)/sizeof(*sepoint);
+unsigned int nr_streams = 0;
+
+sem_t sem_thread_finished;
+
+bool exit_flag = false;
+
+#ifdef WITH_FWP
+#define negotiate_contract_for_stream(s) negotiate_contract_for_stream_fwp(s)
+#define create_stream_endpoint(s) create_stream_endpoint_fwp(s)
+#define send_packet(s, b) send_packet_fwp(s, b)
+#define recv_packet(s, b) recv_packet_fwp(s, b)
+#define wait_for_all_threads_to_finish() wait_for_all_threads_to_finish_fwp()
+#else
+#define negotiate_contract_for_stream(s) 0
+#define create_stream_endpoint(s) create_stream_endpoint_native(s)
+#define send_packet(s, b) send_packet_native(s, b)
+#define recv_packet(s, b) recv_packet_native(s, b)
+#define wait_for_all_threads_to_finish() wait_for_all_threads_to_finish_native()
+#endif
void stopper()
{
- int ac,i;
-
- printf("Writing data to log file...\n");
- for (ac = 0; ac < AC_QUEUES; ac++) {
- for ( i = 0 ; i < MAX_DELAY/GRANULARITY; i++)
- if (delay_stats[ac][i])
- fprintf(logfd,"%d %d\n", i*GRANULARITY,\
- delay_stats[ac][i]);
-
- fprintf(logfd, "\n\n");
- }
-
- printf("Finished.\n");
- fclose(logfd);
+ int i;
+ exit_flag = true;
- exit(0);
+ /* Interrupt all receivers */
+#ifdef WITH_FWP
+ for (i=0; i < nr_streams; i++) {
+ if (streams[i].receiver.valid) pthread_kill(streams[i].receiver.thread, SIGUSR1);
+ if (streams[i].contract_send) fwp_contract_cancel(streams[i].contract_send);
+ if (streams[i].contract_resp)fwp_contract_cancel(streams[i].contract_resp);
+ }
+#else
+ for (i=0; i < AC_NUM; i++) {
+ pthread_kill(receivers[i].thread, SIGUSR1);
+ }
+#endif
}
-static inline
-void timespec_add (struct timespec *sum, const struct timespec *left,
- const struct timespec *right)
+void stream_to_text(char *stream_desc, size_t n, struct stream *stream, long long useconds)
{
- sum->tv_sec = left->tv_sec + right->tv_sec;
- sum->tv_nsec = left->tv_nsec + right->tv_nsec;
+ char buf[3][12];
+ char real[100];
- if (sum->tv_nsec >= 1000000000){
- ++sum->tv_sec;
- sum->tv_nsec -= 1000000000;
+ if (useconds) {
+ snprintf(real, sizeof(real), "; real: %s sent %lld (%lld/s), received %lld (%lld/s)",
+ bandwidth_to_text(buf[0], (long long)stream->really_sent*stream->packet_size*8*SEC_TO_USEC/useconds),
+ stream->sent, stream->sent*SEC_TO_USEC/useconds,
+ stream->received, stream->received*SEC_TO_USEC/useconds);
+ } else {
+ real[0]=0;
}
+
+ snprintf(stream_desc, n, "%d: %s %s (%d bytes per %s +-%s, %d packets/s)%s",
+ stream-streams, ac_to_text[stream->ac], bandwidth_to_text(buf[0], stream->bandwidth_bps),
+ stream->packet_size, usec_to_text(buf[1], stream->period_usec),
+ usec_to_text(buf[2], stream->jitter*stream->period_usec/100),
+ (int)(SEC_TO_USEC/stream->period_usec), real);
}
-static inline
-void timespec_sub (struct timespec *diff, const struct timespec *left,
- const struct timespec *right)
+void save_results(int argc, char *argv[], int useconds)
{
- diff->tv_sec = left->tv_sec - right->tv_sec;
- diff->tv_nsec = left->tv_nsec - right->tv_nsec;
+ int ac, i, maxi;
+ const int mini = 3000/opt_granularity_usec;
+ bool allzeros;
+ unsigned send_count[AC_NUM];
+
+ fprintf(stderr, "Writing data to %s... ", logfname);
+ fflush(stderr);
+
+ fprintf(logfd, "# Invoked as: ");
+ for (i=0; i<argc; i++) fprintf(logfd, "%s ", argv[i]);
+ if (opt_comment) {
+ fprintf(logfd, "(%s)", opt_comment);
+ }
+ fprintf(logfd, "\n");
+
+ if (useconds/SEC_TO_USEC != opt_count_sec) {
+ char buf[20];
+ usec_to_text(buf, useconds);
+ fprintf(logfd, "# Data gathered for %s.\n", buf);
+ }
+
+ for (i = 0; i < nr_streams; i++) {
+ char stream_desc[200];
+ stream_to_text(stream_desc, sizeof(stream_desc), &streams[i], useconds);
+ fprintf(logfd, "# Stream %s\n", stream_desc);
+ }
+
+ /* Find maximal delay */
+ allzeros = true;
+ for (maxi = MAX_DELAY_US/opt_granularity_usec - 1; maxi >= 0; maxi--) {
+ for (ac = 0; ac < AC_NUM; ac++) {
+ if ((delay_stats[ac][maxi].csc != 0) ||
+ (delay_stats[ac][maxi].cs != 0) ||
+ (delay_stats[ac][maxi].sc != 0))
+ allzeros = false;
+ }
+ if (!allzeros) break;
+ }
+ maxi++;
+ if (maxi < mini) maxi = mini;
+
+ /* Calculate total number of sent packets per AC */
+ memset(send_count, 0, sizeof(send_count));
+ for (i = 0; i < nr_streams; i++) {
+ ac = streams[i].ac;
+ send_count[ac] += streams[i].sent;
+ }
+
+#if 0
+ /* Write pdf */
+ for ( i = 0 ; i < maxi; i++) {
+ fprintf(logfd,"\n%f", i*opt_granularity_usec/1000.0);
+ for (ac = 0; ac < AC_NUM; ac++) {
+ if (sum[ac])
+ val = (double)delay_stats[ac][i]*100.0 / sum[ac];
+ else val = -1; /* Don't display this ac */
+ fprintf(logfd," %lf", val);
+ }
+ }
+
+ fprintf(logfd,"\n\n");
+#endif
+
+ fprintf(logfd,"## Format: msec csc%% cs%% sc%%\n");
+
+ /* Write PDF */
+ for (ac = 0; ac < AC_NUM; ac++) {
+ struct delay_stat integral = {0,0,0}, last = {-1,-1,-1};
+
+ fprintf(logfd,"%f %f %f %f\n", 0.0, 0.0, 0.0, 0.0);
- if (diff->tv_nsec < 0){
- --diff->tv_sec;
- diff->tv_nsec += 1000000000;
+ if (send_count[ac] != 0) {
+ i=0;
+ while ((delay_stats[ac][i].csc == 0) &&
+ (delay_stats[ac][i].cs == 0) &&
+ (delay_stats[ac][i].sc == 0)) i++;
+
+ for (i++; i < maxi+1; i++) {
+ if (memcmp(&last, &integral, sizeof(last))) {
+ char buf[3][20];
+ snprintf(buf[0], sizeof(buf[0]), "%f", (double)integral.csc*100.0 / send_count[ac]);
+ snprintf(buf[1], sizeof(buf[1]), "%f", (double)integral.cs *100.0 / send_count[ac]);
+ snprintf(buf[2], sizeof(buf[2]), "%f", (double)integral.sc *100.0 / send_count[ac]);
+
+ fprintf(logfd,"%f %s %s %s\n", i*opt_granularity_usec/1000.0,
+ integral.csc != last.csc ? buf[0] : "-",
+ integral.cs != last.cs ? buf[1] : "-",
+ integral.sc != last.sc ? buf[2] : "-"
+ );
+ last = integral;
+ }
+ if (i>0) {
+ integral.csc += delay_stats[ac][i-1].csc;
+ integral.sc += delay_stats[ac][i-1].sc;
+ integral.cs += delay_stats[ac][i-1].cs;
+ }
+ }
+ }
+ fprintf(logfd,"\n\n");
}
+
+ fprintf(stderr, "finished.\n");
+ fclose(logfd);
+
+ exit(0);
}
int create_ac_socket(unsigned int ac)
if ((sockfd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0)
{
- perror("Unable to open socket\n");
+ error(0, errno, "Unable to open socket");
+ return -1;
+ }
+ if (fcntl(sockfd, F_SETFL, O_NONBLOCK) != 0) {
+ error(0, errno, "set non-blocking socket");
return -1;
}
-
if (setsockopt(sockfd,SOL_SOCKET,SO_REUSEADDR,&yes,sizeof(int)) == -1) {
- perror("Unable to set socket\n");
+ error(0, errno, "Unable to set socket");
return -1;
}
+ if (opt_send_buf_size >= 0) {
+ if (setsockopt(sockfd,SOL_SOCKET,SO_SNDBUF,&opt_send_buf_size,sizeof(opt_send_buf_size)) == -1) {
+ error(0, errno, "Unable to set socket buffer size");
+ return -1;
+ }
+ }
+
- //tos = ((AC_QUEUES - ac) *2 - 1)*32;
+ //tos = ((AC_NUM - ac) *2 - 1)*32;
tos = ac_to_tos[ac];
if (setsockopt(sockfd, SOL_IP, IP_TOS, &tos, sizeof(tos))) {
- perror("Unable to set TOS\n");
+ error(0, errno, "Unable to set TOS");
close(sockfd);
return -1;
}
return sockfd;
}
+void empty_handler()
+{
+}
-void* receiver(void* queue)
+void reset_statistics()
{
- struct msg_t msg;
+ int i;
+ for (i = 0; i < nr_streams; i++) {
+ pthread_mutex_lock(&streams[i].mutex);
+ streams[i].sent = 0;
+ streams[i].really_sent = 0;
+ streams[i].received = 0;
+ pthread_mutex_unlock(&streams[i].mutex);
+ }
+ pthread_mutex_lock(&delay_stats_mutex);
+ clock_gettime(CLOCK_REALTIME, &reset_timestamp);
+ memset(delay_stats, 0, sizeof(delay_stats));
+ pthread_mutex_unlock(&delay_stats_mutex);
+}
+
+#ifndef WITH_FWP
+int recv_packet_native(unsigned ac, struct msg_t *msg)
+{
+ int mlen, ret;
+ fd_set fdset;
struct sockaddr_in rem_addr;
+ unsigned int rem_addr_length;
+
+ FD_ZERO(&fdset);
+ FD_SET(ac_sockfd[ac], &fdset);
+ rem_addr_length = sizeof(rem_addr);
+ mlen = -1;
+ while (!exit_flag) {
+ ret = select(ac_sockfd[ac]+1, &fdset, NULL, NULL, NULL);
+ if (ret < 0) {
+ if (errno == EINTR) continue;
+ error(0, errno, "receiver select");
+ return -1;
+ }
+ mlen = recvfrom(ac_sockfd[ac], msg, sizeof(*msg), 0,
+ (struct sockaddr*)&rem_addr, &rem_addr_length);
+ break;
+ }
+ return mlen;
+}
+#else
+int recv_packet_fwp(struct stream *stream, struct msg_t *msg)
+{
int mlen;
- unsigned int ac, rem_addr_length;
- unsigned long int trans_time_msec;
- unsigned long int min_trans_time;
- struct timespec send_timestamp,recv_timestamp, trans_time;
+ mlen = fwp_recv(stream->resp_endpoint, msg, sizeof(*msg), 0);
+ return mlen;
+}
+#endif
+
+void* receiver(void* arg)
+{
+ struct msg_t msg;
+ long long int trans_time_usec, client_to_server_usec, server_to_client_usec;
+ long long int min_trans_time;
+ struct timespec send_timestamp, server_timestamp, recv_timestamp;
+ int mlen, ret;
+ unsigned ac;
min_trans_time = ~0;
- ac = (int)queue;
- rem_addr_length = sizeof(rem_addr);
- while (1) {
- while ((mlen = recvfrom(ac_sockfd[ac], &msg, sizeof(msg), 0,\
- (struct sockaddr*)&rem_addr, &rem_addr_length)) < 0) {
- if (errno == EINTR) continue;
- perror("Chyba pri prijimani pozadavku\n");
- return NULL;
+ block_signals();
+ set_rt_prio(99);
+
+ while (!exit_flag) {
+#ifdef WITH_FWP
+ struct stream *stream = arg;
+ ac = stream->ac;
+ mlen = recv_packet_fwp(stream, &msg);
+#else
+ ac = (unsigned)arg;
+ mlen = recv_packet_native(ac, &msg);
+#endif
+ if (mlen < 0) {
+ if (errno != EINTR)
+ error(0, errno, "receive_packet error");
+ goto out;
}
- clock_gettime(CLOCK_MONOTONIC,&recv_timestamp);
+ clock_gettime(CLOCK_REALTIME,&recv_timestamp);
send_timestamp = msg.send_timestamp;
+ server_timestamp = msg.sendback_timestamp;
+
+ /* Check whether this message was sent after reset_statistics() */
+
+ if ((ret = timespec_sub_usec(&send_timestamp, &reset_timestamp)) < 0) {
+ continue; /* If so, don't count it */
+ }
+
+ trans_time_usec = timespec_sub_usec(&recv_timestamp ,&send_timestamp) / 2;
+ client_to_server_usec = timespec_sub_usec(&server_timestamp, &send_timestamp);
+ server_to_client_usec = timespec_sub_usec(&recv_timestamp, &server_timestamp);
+
+ pthread_mutex_lock(&delay_stats_mutex);
+ if (trans_time_usec < MAX_DELAY_US && trans_time_usec >= 0) {
+ delay_stats[ac][trans_time_usec/opt_granularity_usec].csc++;
+ }
+ if (client_to_server_usec < MAX_DELAY_US && client_to_server_usec >= 0) {
+ delay_stats[ac][client_to_server_usec/opt_granularity_usec].cs++;
+ }
+ if (server_to_client_usec < MAX_DELAY_US && server_to_client_usec >= 0) {
+ delay_stats[ac][server_to_client_usec/opt_granularity_usec].sc++;
+ }
+ pthread_mutex_unlock(&delay_stats_mutex);
+
+#ifdef WITH_FWP
+ if (trans_time_usec > stream->wc_delay) {
+ stream->wc_delay = trans_time_usec;
+ }
+#endif
+ receivers[ac].received++;
- timespec_sub(&trans_time,&recv_timestamp ,&send_timestamp);
- trans_time_msec = (trans_time.tv_sec * 1000 + \
- trans_time.tv_nsec / 1000000) /2;
-
- delay_stats[ac][trans_time_msec/GRANULARITY]++;
+ pthread_mutex_lock(&streams[msg.stream].mutex);
+ streams[msg.stream].received++;
+ pthread_mutex_unlock(&streams[msg.stream].mutex);
/*if (trans_time_nsec < min_trans_time)
min_trans_time = trans_time_nsec;*/
send_timestamp.tv_nsec,recv_timestamp.tv_sec,\
recv_timestamp.tv_nsec, trans_time_msec); */
}
+out:
+ sem_post(&sem_thread_finished);
+ return NULL;
}
-void* sender(void* endpoint)
+/**
+ * Send a packet.
+ *
+ * @return -1 in case of error, 1 in case of sucessfull send and 0
+ * when all buffers are full.
+ */
+#ifndef WITH_FWP
+static inline int
+send_packet_native(struct stream* stream, union msg_buff* buff)
+{
+ struct iovec iov;
+ struct msghdr msg;
+
+ iov.iov_base = buff;
+ iov.iov_len = stream->packet_size;
+ msg.msg_name = (void*)&stream->rem_addr;
+ msg.msg_namelen = sizeof(stream->rem_addr);
+ msg.msg_iov = &iov;
+ msg.msg_iovlen = 1;
+ msg.msg_flags = 0;
+ msg.msg_control = &cmsg;
+ msg.msg_controllen = cmsg_len;
+
+ int ret = 1;
+
+ while (sendmsg(ac_sockfd[stream->ac], &msg, 0) < 0) {
+ if (errno == EINTR) continue;
+ if (errno == EAGAIN) {
+ if (opt_wait_for_queue_is_full &&
+ !some_queue_is_full &&
+ /* We use mutex as atomic test and set */
+ (pthread_mutex_trylock(&queue_full_mutex) != EBUSY)) {
+ some_queue_is_full = true;
+ reset_statistics();
+ }
+ ret = 0;
+ break;
+ } else {
+ error(0, errno, "Error while sending");
+ ret = -1;
+ break;
+ }
+ }
+ return ret;
+}
+#else
+static inline int
+send_packet_fwp(struct stream* stream, union msg_buff* buff)
+{
+ int ret;
+
+ buff->msg.resp_port = htons(stream->resp_port);
+ ret = fwp_send(stream->endpoint, buff, stream->packet_size, 0);
+
+ return ret;
+}
+#endif
+
+static inline void
+wait_for_next_send(struct stream* stream, struct timespec *last_send_time)
{
- struct sockaddr_in rem_addr;
- struct msg_t msg;
- unsigned long int seqn;
struct timespec time_to_wait, current_time, period, interval;
- struct hostent* ph;
- int ac;
- struct send_endpoint* spoint;
+ unsigned period_usec = stream->period_usec;
+
+ /* |~~~+~~~| jitter interval (width = 2*stream->jitter percentage from period)*/
+ /* |-------------| nominal period*/
+ if (stream->jitter) {
+ period.tv_nsec = USEC_TO_NSEC*(period_usec*(100-stream->jitter)/100
+ + rand() % (2*period_usec*stream->jitter/100));
+ } else {
+ period.tv_nsec = USEC_TO_NSEC*(period_usec);
+ }
+ period.tv_sec = 0;
- spoint = (struct send_endpoint*) endpoint;
- memset(&rem_addr,0, sizeof(rem_addr));
- //-------------------------------------------------------------------
- // TODO: not functioning - check it
+ timespec_add(&time_to_wait, last_send_time, &period);
+ clock_gettime(CLOCK_REALTIME,¤t_time);
+ timespec_sub(&interval,&time_to_wait,¤t_time);
+ nanosleep(&interval,NULL);
+}
+
+
+void* sender(void* arg)
+{
+ union msg_buff buff;
+ unsigned long int seqn;
+ struct stream* stream = (struct stream*) arg;
+ int ret;
+
+#ifndef WITH_FWP
+ char stream_desc[100];
+ stream_to_text(stream_desc, sizeof(stream_desc), stream, 0);
+ printf("%s\n", stream_desc);
+#endif
+ if (stream->bandwidth_bps == 0)
+ goto out;
+
+ seqn = 0;
+
+ block_signals();
+ set_rt_prio(90-stream->ac);
+
+ while (!exit_flag) {
+
+/* buff.msg.seqn = seqn++; */
+/* buff.msg.tos = ac_to_tos[stream->ac]; */
+ buff.msg.stream = stream-streams;
- if ((rem_addr.sin_addr.s_addr = inet_addr(server_addr)) == INADDR_NONE){
- ph = gethostbyname(server_addr);
- if (ph)
- rem_addr.sin_addr = *((struct in_addr *)ph->h_addr);
- else {
- perror("Unknown server\n");
- }
+ clock_gettime(CLOCK_REALTIME,&buff.msg.send_timestamp);
+
+ ret = send_packet(stream, &buff);
+ if (ret < 0) {
+ goto out;
+ }
+
+ pthread_mutex_lock(&stream->mutex);
+ stream->sent++;
+ if (ret > 0)
+ stream->really_sent++;
+ pthread_mutex_unlock(&stream->mutex);
+
+#ifdef DEBUG
+ printf("%d", stream->ac);
+ fflush(stdout);
+#endif
+
+ wait_for_next_send(stream, &buff.msg.send_timestamp);
}
+out:
+ sem_post(&sem_thread_finished);
+ return NULL;
+}
+
+#ifdef WITH_FWP
+static int negotiate_contract_for_stream_fwp(struct stream *stream)
+{
+ fwp_contract_t contract;
+ fwp_vres_d_t vres2;
+ int ret;
+
+ /* Contract for client->server stream */
+ memset(&contract, 0, sizeof(contract));
+ contract.budget = stream->packet_size;
+ contract.period_usec = stream->period_usec;
+ contract.deadline_usec = 3*stream->period_usec;
- //------------------------------------------------------------------
-
- rem_addr.sin_family = AF_INET;
- rem_addr.sin_addr.s_addr = inet_addr(server_addr);
- rem_addr.sin_port = htons(BASE_PORT + ac);
- seqn = 0;
+ stream->contract_send = fwp_contract_create(&contract);
+ ret = fwp_contract_negotiate(stream->contract_send, &stream->vres);
+ if (ret != 0) {
+ stream->contract_send = NULL;
+/* fprintf(stderr, "Send contract was not accepted\n\n\n"); */
+ return ret;
+ }
+
+ /* Contract for server->client stream */
+ memset(&contract, 0, sizeof(contract));
+ contract.budget = stream->packet_size;
+ contract.period_usec = stream->period_usec;
+ contract.deadline_usec = 3*stream->period_usec;
+
+ stream->contract_resp = fwp_contract_create(&contract);
+ ret = fwp_contract_negotiate(stream->contract_resp, &vres2);
+ if (ret != 0) {
+ stream->contract_resp = NULL;
+/* fprintf(stderr, "Receive contract was not accepted\n\n\n"); */
+ return ret;
+ }
+
+ /* We don't use the vres at server, since the server doesn't
+ * know the parameters. Instread, server uses plain
+ * sockets. */
- period.tv_nsec = spoint->period_nsec;
- period.tv_sec = 0;
+ return ret;
+}
+#endif
+
+#ifdef WITH_FWP
+static void create_stream_endpoint_fwp(struct stream *stream)
+{
+/* fwp_endpoint_attr_t attr; */
+ int ret;
+ struct hostent* ph;
+
+ stream->ac = fwp_vres_get_ac(stream->vres);
- ac = spoint->ac;
- while (1) {
+/* fwp_endpoint_attr_init(&attr); */
+/* fwp_endpoint_attr_setreliability(&attr, FWP_EPOINT_BESTEFFORT); */
- msg.seqn = seqn;
- msg.tos = ac_to_tos[ac];
+ ph = gethostbyname(server_addr);
+ if (ph && ph->h_addr_list[0]) {
+ struct in_addr *a = (struct in_addr *)(ph->h_addr_list[0]);
+ ret = fwp_send_endpoint_create(a->s_addr, BASE_PORT + stream->ac,
+ NULL, &stream->endpoint);
+ /* stream->rem_addr.sin_port = htons(BASE_PORT + stream->ac); */
+ if (ret < 0) error(1, errno, "fwp_send_endpoint_create");
- clock_gettime(CLOCK_MONOTONIC,&msg.send_timestamp);
+ ret = fwp_send_endpoint_bind(stream->endpoint, stream->vres);
+ if (ret != 0) error(1, errno, "fwp_send_endpoint_bind");
- while (sendto(ac_sockfd[ac], &msg, sizeof(msg), 0,\
- (struct sockaddr*)&rem_addr, sizeof(rem_addr)) < 0) {
- if (errno == EINTR) continue;
- perror("Error while sending.\n");
- return NULL;
- }
-
- seqn++;
+ ret = fwp_receive_endpoint_create(0, NULL, &stream->resp_endpoint);
+ if (ret != 0) error(1, errno, "fwp_receive_endpoint_create");
- timespec_add(&time_to_wait,&msg.send_timestamp,&period);
- clock_gettime(CLOCK_MONOTONIC,¤t_time);
- timespec_sub(&interval,&time_to_wait,¤t_time);
- nanosleep(&interval,NULL);
- }
+ unsigned int port;
+ fwp_endpoint_get_params(stream->resp_endpoint, NULL, &port, NULL);
+ stream->resp_port = port;
+
+ ret = pthread_create(&stream->receiver.thread, NULL, receiver, (void*)stream);
+ if (ret) error(1, ret, "Error while creating receiver");
+
+ stream->receiver.valid = true;
+ }
+ else {
+ error(1, errno, "gethostbyname(%s)", server_addr);
+ }
+
+}
+#else
+static void create_stream_endpoint_native(struct stream *stream)
+{
+ struct hostent* ph;
+
+ memset(&stream->rem_addr,0, sizeof(stream->rem_addr));
+
+ stream->rem_addr.sin_family = AF_INET;
+ ph = gethostbyname(server_addr);
+ if (ph)
+ stream->rem_addr.sin_addr = *((struct in_addr *)ph->h_addr);
+ else {
+ error(1, errno, "gethostbyname(%s)", server_addr);
+ }
+ stream->rem_addr.sin_port = htons(BASE_PORT + stream->ac);
+}
+#endif
+
+static inline void
+calc_stream_params(struct stream *stream)
+{
+ int packet_size;
+ unsigned period_usec;
+ int bandwidth;
+ int ret;
+
+ /* If some parameters are not set explicitely, use default values. */
+ if (stream->bandwidth_bps < 0) stream->bandwidth_bps = opt_def_bandwidth * Kbit;
+ if (stream->packet_size < 0) stream->packet_size = opt_packet_size;
+ if (stream->period_usec < 0) stream->period_usec = opt_def_period_msec * MSEC_TO_USEC;
+
+ bandwidth = stream->bandwidth_bps;
+
+ /* Avoid arithmetic exception. Server thread will exit if
+ stream->bandwidth_bps == 0. */
+ if (bandwidth == 0) bandwidth = 1;
+
+ if (stream->packet_size) {
+ packet_size = stream->packet_size;
+ period_usec = SEC_TO_USEC*packet_size*8/bandwidth;
+ if (period_usec == 0) period_usec = 1;
+ } else if (stream->period_usec) {
+ period_usec = stream->period_usec;
+ packet_size = (long long)bandwidth/8 * period_usec/SEC_TO_USEC;
+ } else {
+ char buf[200];
+ stream_to_text(buf, sizeof(buf), stream, 0);
+ error(1, 0, "Neither packet size nor period was specified for a stream %s", buf);
+ }
+
+ if (packet_size < sizeof(struct msg_t)) {
+ error(1, 0, "Packet size too small (min %d)", sizeof(struct msg_t));
+ }
+
+ stream->packet_size = packet_size;
+ stream->period_usec = period_usec;
+ stream->jitter = opt_jitter;
+
+ ret = negotiate_contract_for_stream(stream);
+ if (ret == 0) {
+ create_stream_endpoint(stream);
+ } else {
+ char buf[200];
+ stream_to_text(buf, sizeof(buf), stream, 0);
+ fprintf(stderr, "Contract hasn't been accepted:\n%s\n", buf);
+ stream->bandwidth_bps = 0;
+ some_contract_not_accepted = true;
+ }
+}
+
+/**
+ * Parse -b parameter.
+ *
+ * @param params String to parse
+ *
+ * @return NULL in case of success, pointer to a problematic character
+ * on error.
+ */
+char* parse_bandwidths(char *params)
+{
+ struct stream *sp = &streams[nr_streams];
+
+ while (*params && nr_streams < MAX_STREAMS) {
+ char *ac_ids[AC_NUM] = { [AC_VO]="VO", [AC_VI]="VI", [AC_BE]="BE", [AC_BK]="BK" };
+ int i;
+ char *next_char;
+
+ if (strlen(params) < 2)
+ return params;
+ for (i=0; i<AC_NUM; i++) {
+ if (strncmp(params, ac_ids[i], 2) == 0) {
+ sp->ac = i;
+ params+=strlen(ac_ids[i]);
+ break;
+ }
+ }
+ if (i==AC_NUM)
+ return params;
+
+ long bw;
+ if (*params == ':') {
+ params++;
+
+ bw = strtol(params, &next_char, 10);
+ if (next_char == params)
+ return params;
+ params = next_char;
+ } else
+ bw = -1;
+
+ sp->bandwidth_bps = bw*Kbit;
+
+ long period = 0;
+ long packet_size = 0;
+ if (*params == '@') {
+ params++;
+ period = strtol(params, &next_char, 10);
+ if (period == 0)
+ return params;
+ params = next_char;
+ }
+ else {
+ if (*params == '/') {
+ params++;
+ packet_size = strtol(params, &next_char, 10);
+ if (packet_size == 0)
+ return params;
+ params = next_char;
+ } else {
+ packet_size = -1;
+ period = -1;
+ }
+ }
+ sp->period_usec = period*MSEC_TO_USEC;
+ sp->packet_size = packet_size;
+
+
+
+ if (*params != '\0' && *params != ',')
+ return params;
+ nr_streams++;
+ sp++;
+ if (*params == ',')
+ params++;
+ }
+ return NULL;
+}
+
+#ifdef WITH_FWP
+void wait_for_all_threads_to_finish_fwp(void)
+{
+ int i;
+ /* Wait for all threads to finish */
+ /* FIXME: */
+/* for (i=0; i < 2*nr_streams; i++) { */
+/* sem_wait(&sem_thread_finished); */
+/* } */
+}
+#else
+void wait_for_all_threads_to_finish_native(void)
+{
+ int i;
+ /* Wait for all threads to finish */
+ for (i=0; i < nr_streams + AC_NUM; i++) {
+ sem_wait(&sem_thread_finished);
+ }
+}
+#endif
+
+#ifdef WITH_FWP
+void init_gui()
+{
+ initscr();
+ cbreak();
+ noecho();
+}
+
+#define addfield(title, format, ...) \
+ move(y, x); \
+ x+=strlen(title)+1; \
+ if (i == 0) addstr(title); \
+ else { \
+ snprintf(str, sizeof(str), format, __VA_ARGS__); \
+ addstr(str); \
+ }
+
+void print_status(int seconds)
+{
+ int i;
+ char str[200], s1[20];
+ int x = 0, y;
+ struct stream *s = NULL;
+
+ for (i = 0; i <= nr_streams; i++) {
+ if (i>0) s = &streams[i-1];
+ y=i;
+ x=0;
+ addfield("Stream", "%d", i);
+ addfield("Bandwidth", "%s", bandwidth_to_text(s1, s->bandwidth_bps));
+ addfield("Packet size", "%d bytes", s->packet_size);
+ addfield("Period ", "%s", usec_to_text(s1, s->period_usec));
+ addfield("AC ", "%s", ac_to_text[s->ac]);
+ addfield("Worst-case delay", "%s", usec_to_text(s1, s->wc_delay));
+ addfield("Received responses", "%lld", s->received);
+ }
+ refresh();
+}
+#else
+void init_gui() {}
+void print_status(int seconds)
+{
+ int ac;
+ fprintf(stderr, "\r%3ds", seconds);
+ for (ac = 0; ac < AC_NUM; ac++) {
+ int delta = receivers[ac].received - receivers[ac].last_received;
+ receivers[ac].last_received = receivers[ac].received;
+ fprintf(stderr, " %s %5d %4d/s", ac_to_text[ac], receivers[ac].received, delta);
+ }
+ fflush(stderr);
}
+#endif
int main(int argc, char *argv[])
{
- int ac, i, rc;
+ int i, rc, frames, seconds;
pthread_attr_t attr;
pthread_t thread;
+ char opt;
- server_addr = argv[1];
-
- memset(delay_stats,0, sizeof(delay_stats));
- pthread_attr_init(&attr);
- if (argc < 2) {
- printf("Usage: %s server_ip_addr \n", argv[0]);
- return 0;
+ while ((opt = getopt(argc, argv, "B:b:C:c:g:I:j:o:qQ:s:T:")) != -1) {
+ switch (opt) {
+ case 'B':
+ opt_def_bandwidth = atoi(optarg);
+ break;
+ case 'b': {
+ char *errpos;
+ errpos = parse_bandwidths(optarg);
+ if (errpos != NULL) {
+ if (*errpos == '\0')
+ error(1, 0, "Bandwidth parse error - string to short");
+ else
+ error(1, 0, "Bandwidth parse error at '%s'", errpos);
+ }
+ break;
+ }
+ case 'C':
+ opt_comment = optarg;
+ break;
+ case 'c':
+ opt_count_sec = atoi(optarg);
+ break;
+ case 'g':
+ opt_granularity_usec = atoi(optarg);
+ if (opt_granularity_usec < MIN_GRANULARITY) {
+ error(1, 0, "Granulatiry too small (min %d)", MIN_GRANULARITY);
+ }
+ break;
+ case 'I':
+ opt_interface = optarg;
+ break;
+ case 'j':
+ #ifdef WITH_FWP
+ error(1, 0, "-j is not allowd when compiled with FWP");
+ #else
+ opt_jitter = atoi(optarg);
+ #endif
+ break;
+ case 'o':
+ opt_output = optarg;
+ break;
+ case 'Q':
+ opt_send_buf_size = atoi(optarg);
+ break;
+ case 'q':
+ opt_wait_for_queue_is_full = true;
+ break;
+ case 's':
+ opt_packet_size = atoi(optarg);
+ break;
+ case 'T':
+ opt_def_period_msec = atoi(optarg);
+ break;
+ default:
+ fprintf(stderr, "Usage: %s [ options ] server_addr\n\n", argv[0]);
+ fprintf(stderr, "Options:\n");
+ fprintf(stderr, " -B default bandwidth for -b option [kbit]\n");
+ fprintf(stderr, " -b bandwidth of streams (VO|VI|BE|BK)[:<kbit>][@<msec> or /<bytes>][,...]\n");
+ fprintf(stderr, " -C comment (added to header)\n");
+ fprintf(stderr, " -c count (number of seconds to run)\n");
+ fprintf(stderr, " -g histogram granularity [usec]\n");
+ fprintf(stderr, " -I <interface> send packets from this interface");
+ fprintf(stderr, " -j send jitter (0-100) [%%]\n");
+ fprintf(stderr, " -o output filename (.dat will be appended)\n");
+ fprintf(stderr, " -q gather statistics only after some queue becomes full\n");
+ fprintf(stderr, " -Q <bytes> set size for socket send buffers\n");
+ fprintf(stderr, " -s size of data payload in packets [bytes] (default: %d)\n", opt_packet_size);
+ fprintf(stderr, " -T default period for -b option [msec]\n");
+ exit(1);
+ }
}
-
- if ((logfd = fopen(logfname,"w+")) == NULL) {
- fprintf(stderr,"Can not open %s\n", logfname);
- exit(1);
+ if (opt_packet_size && opt_def_period_msec) {
+ error(1, 0, "Error: Nonzero -T and -s can't be used together!");
}
-
- /*
- sendpoints.epoint[AC_BE].ac = AC_BE;
- sendpoints.epoint[AC_BE].period_nsec = 76000;
- sendpoints.epoint[AC_BK].ac = AC_BK;
- sendpoints.epoint[AC_BK].period_nsec = 75750;
-
- sendpoints.epoint[AC_VI].ac = AC_VI;
- sendpoints.epoint[AC_VI].period_nsec = 19080;
-
- sendpoints.epoint[AC_VO].ac = AC_VO;
- sendpoints.epoint[AC_VO].period_nsec = 300000;
- */
+ if (optind < argc) {
+ server_addr = argv[optind];
+ } else {
+ error(1, 0, "Expected server address argument");
+ }
+
+ if (nr_streams == 0)
+ parse_bandwidths("BE");
+ pthread_attr_init(&attr);
+
+ snprintf(logfname, sizeof(logfname), "%s.dat", opt_output);
+ if ((logfd = fopen(logfname,"w+")) == NULL) {
+ error(1, errno ,"Can not open %s", logfname);
+ }
if (signal(SIGTERM, stopper) == SIG_ERR) {
- perror("Error in signal registration");
- exit(1);
+ error(1, errno, "Error in signal registration");
}
if (signal(SIGINT, stopper) == SIG_ERR) {
- perror("Signal handler registration error\n");
- exit(1);
+ error(1, errno, "Signal handler registration error");
}
-
+
+ struct sigaction sa;
+ sa.sa_handler = empty_handler;
+ sa.sa_flags = 0; /* don't restart syscalls */
+
+ if (sigaction(SIGUSR1, &sa, NULL) < 0) {
+ error(1, errno, "sigaction error");
+ }
+
+ sem_init(&sem_thread_finished, 0, 0);
+
+ reset_statistics();
+
+#ifdef WITH_FWP
+ rc = fwp_init();
+ if (rc != 0) {
+ error(1, errno, "FWP initialization failed");
+ }
+#else
+ int ac;
/* create four receivers each per AC */
- for (ac = AC_QUEUES - 1; ac >= 0; ac--) {
+ for (ac = AC_NUM - 1; ac >= 0; ac--) {
ac_sockfd[ac] = create_ac_socket(ac);
- rc = pthread_create(&thread, &attr, receiver, (void*) ac);
- if (rc) {
- printf("Error while creating receiver %d\n",rc);
+ if (ac_sockfd[ac] < 0) {
return 1;
}
+ rc = pthread_create(&receivers[ac].thread, &attr, receiver, (void*) ac);
+ if (rc) {
+ error(1, rc, "Error while creating receiver");
+ }
+ receivers[ac].valid = true;
}
+#endif
+
- /* create sendpoints */
- for (i = 0; i < nr_sepoints; i++) {
- rc = pthread_create(&thread, &attr, sender, (void*) &sepoint[i]);
- if (rc) {
- printf("Error while creating sender %d\n",rc);
- return 1;
+ if (opt_interface) {
+ struct ifreq ifr;
+
+ memset(&ifr, 0, sizeof(ifr));
+ strncpy(ifr.ifr_name, opt_interface, IFNAMSIZ-1);
+ if (ioctl(ac_sockfd[AC_VO], SIOCGIFINDEX, &ifr) < 0) {
+ error(1, 0, "unknown iface %s", opt_interface);
}
+ cmsg.ipi.ipi_ifindex = ifr.ifr_ifindex;
+ cmsg_len = sizeof(cmsg);
}
-
- while (1) {
- sleep(100000);
+ /* create sendpoints */
+ for (i = 0; i < nr_streams; i++) {
+ struct stream *s = &streams[i];
+ pthread_mutex_init(&s->mutex, NULL);
+ calc_stream_params(s);
+ rc = pthread_create(&thread, &attr, sender, (void*) s);
+ if (rc) error(1, rc, "Error while creating sender");
}
-
+
+ if (some_contract_not_accepted) {
+ stopper();
+ } else {
+ //init_gui();
+
+ seconds = 1;
+ frames=0;
+ while (!exit_flag) {
+#ifdef WITH_FWP
+ usleep(40000);
+#else
+ sleep(1);
+#endif
+ frames++;
+ if (frames>=25) {
+ seconds++;
+ frames = 0;
+ }
+ print_status(seconds);
+ if (seconds == opt_count_sec)
+ stopper();
+ }
+ }
+
+#ifdef WITH_FWP
+ //endwin();
+ fwp_done();
+#else
+ fprintf(stderr, "\nWaiting for threads to finish\n");
+ wait_for_all_threads_to_finish();
+
+ struct timespec end_timestamp, measure_length;
+ clock_gettime(CLOCK_REALTIME,&end_timestamp);
+ timespec_sub(&measure_length, &end_timestamp, &reset_timestamp);
+
+ save_results(argc, argv, timespec2usec(&measure_length));
+#endif
+
return 0;
}
projects / frescor / fwp.git / blobdiff