]> rtime.felk.cvut.cz Git - frescor/fwp.git/blobdiff - wme_test/wclient.c
wme_test: Make it work with ncurses TUI
[frescor/fwp.git] / wme_test / wclient.c
index ab50ad8917aee26ee3f604999d27dd2441b9d0e8..6ff81b6beb03abdad87d1bee8601d1a41bfd17bd 100644 (file)
@@ -1,4 +1,5 @@
 #include <errno.h>
+#include <error.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <stdbool.h>
 #include "common.h"
 #include <semaphore.h>
+#include <sys/ioctl.h>
+#include <net/if.h>
+#include <inttypes.h>
+
+#ifdef WITH_FWP
+#include <frsh.h>
+#include <ncurses.h>
+#include <fwp_res.h>
+#include <ul_log.h>
+#include <ul_logreg.h>
+
+static UL_LOG_CUST(ulogd);
+static ul_log_domain_t ulogd = {UL_LOGL_MSG, "wclient"};
+UL_LOGREG_SINGLE_DOMAIN_INIT_FUNCTION(init_ulogd_wclient, ulogd);
+
+#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 = 200;
+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;
+uint64_t reset_timestamp; /* [nsec] */
+
+bool some_contract_not_accepted = false;
 
 /* Locked when some queue is full to prevent multiple resets of
    statstics. */
@@ -42,9 +63,12 @@ pthread_mutex_t queue_full_mutex = PTHREAD_MUTEX_INITIALIZER;
 int ac_sockfd[AC_NUM];
 
 struct receiver {
+       bool valid;
        pthread_t thread;
        unsigned received, last_received;
-} receivers[AC_NUM];
+};
+
+struct receiver        receivers[AC_NUM];
 
 FILE* logfd;
 char* server_addr; 
@@ -77,13 +101,31 @@ struct stream {
        /* Mulualy exclusive input parameters */
        int packet_size;
        long period_usec;       /* all time units are in microseconds */
+
+       /* Internal fields */
+#ifndef WITH_FWP
        struct sockaddr_in rem_addr;
+#else
+       frsh_send_endpoint_t endpoint;
+       frsh_receive_endpoint_t resp_endpoint;
+       frsh_vres_id_t vres, vres_rcv;
+       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_usec=200*MSEC_TO_USEC, .bandwidth_bps = 34*Kbit },
@@ -102,15 +144,35 @@ 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 i;
        exit_flag = true;
 
        /* 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);
+       }
+#else
        for (i=0; i < AC_NUM; i++) {
                pthread_kill(receivers[i].thread, SIGUSR1);
-       }
+       }       
+#endif
 }
 
 void stream_to_text(char *stream_desc, size_t n, struct stream *stream, long long useconds)
@@ -127,7 +189,7 @@ void stream_to_text(char *stream_desc, size_t n, struct stream *stream, long lon
                real[0]=0;
        }
        
-       snprintf(stream_desc, n, "%d: %s %s (%d bytes per %s +-%s, %d packets/s)%s",
+       snprintf(stream_desc, n, "%"PRIdPTR": %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),
@@ -146,6 +208,9 @@ void save_results(int argc, char *argv[], int useconds)
 
        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) {
@@ -212,10 +277,15 @@ void save_results(int argc, char *argv[], int useconds)
                
                        for (i++; i < maxi+1; i++) {
                                if (memcmp(&last, &integral, sizeof(last))) {
-                                       fprintf(logfd,"%f %f %f %f\n", i*opt_granularity_usec/1000.0,
-                                               (double)integral.csc*100.0 / send_count[ac],
-                                               (double)integral.cs *100.0 / send_count[ac],
-                                               (double)integral.sc *100.0 / send_count[ac]
+                                       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;
                                }
@@ -235,48 +305,7 @@ void save_results(int argc, char *argv[], int useconds)
        exit(0);
 }
 
-static inline 
-void timespec_add (struct timespec *sum, const struct timespec *left,
-             const struct timespec *right)
-{
-       sum->tv_sec = left->tv_sec + right->tv_sec;
-       sum->tv_nsec = left->tv_nsec + right->tv_nsec;
-
-       if (sum->tv_nsec >= 1000000000){
-               ++sum->tv_sec;
-               sum->tv_nsec -= 1000000000;
-       }
-}
-
-static inline 
-void timespec_sub (struct timespec *diff, const struct timespec *left,
-             const struct timespec *right)
-{
-       diff->tv_sec = left->tv_sec - right->tv_sec;
-       diff->tv_nsec = left->tv_nsec - right->tv_nsec;
-
-       if (diff->tv_nsec < 0){
-                 --diff->tv_sec;
-                 diff->tv_nsec += 1000000000;
-       }
-}
-
-static inline long long timespec_sub_usec(const struct timespec *left,
-                                         const struct timespec *right)
-{
-       struct timespec result;
-       timespec_sub(&result, left, right);
-       return (long long)result.tv_sec * SEC_TO_USEC +
-               result.tv_nsec / USEC_TO_NSEC;
-}
-
-static inline long long timespec2usec(const struct timespec *ts)
-{
-       return ts->tv_sec * SEC_TO_USEC + ts->tv_nsec / USEC_TO_NSEC;
-}
-
-
-int create_ac_socket(unsigned int ac) 
+int create_ac_socket(intptr_t ac) 
 {
        int sockfd;
        unsigned int yes=1, tos;
@@ -284,21 +313,21 @@ int create_ac_socket(unsigned int ac)
 
        if ((sockfd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0)
        {
-               perror("Unable to open socket");
+               error(0, errno, "Unable to open socket");
                return -1;
        }
        if (fcntl(sockfd, F_SETFL, O_NONBLOCK) != 0) {
-               perror("set non-blocking socket");
+               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");
+               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) {
-                       perror("Unable to set socket buffer size");
+                       error(0, errno, "Unable to set socket buffer size");
                        return -1;
                }
        }
@@ -307,7 +336,7 @@ int create_ac_socket(unsigned int ac)
        //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");
+               error(0, errno, "Unable to set TOS");
                close(sockfd);
                return -1;
        }
@@ -322,6 +351,7 @@ void empty_handler()
 void reset_statistics()
 {
        int i;
+       struct timespec ts;
        for (i = 0; i < nr_streams; i++) {
                pthread_mutex_lock(&streams[i].mutex);
                streams[i].sent = 0;
@@ -330,60 +360,93 @@ void reset_statistics()
                pthread_mutex_unlock(&streams[i].mutex);
        }
        pthread_mutex_lock(&delay_stats_mutex);
-       clock_gettime(CLOCK_REALTIME, &reset_timestamp);
+       clock_gettime(CLOCK_REALTIME, &ts);
+       reset_timestamp = ts.tv_sec*1000000000LL + ts.tv_nsec;
        memset(delay_stats, 0, sizeof(delay_stats));
        pthread_mutex_unlock(&delay_stats_mutex);
 }
 
-void* receiver(void* queue)
+#ifndef WITH_FWP
+int recv_packet_native(intptr_t ac, struct msg_t *msg)
 {
-       struct msg_t    msg;
-       struct  sockaddr_in rem_addr;
        int     mlen, ret;
-       unsigned int ac, rem_addr_length; 
-       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;
        fd_set fdset;
-       
-       min_trans_time = ~0;
-       
-       block_signals();
-       set_rt_prio(99);
+       struct  sockaddr_in rem_addr;
+       unsigned int rem_addr_length; 
 
-       ac = (int)queue;
-        rem_addr_length = sizeof(rem_addr);
        FD_ZERO(&fdset);
+       FD_SET(ac_sockfd[ac], &fdset);
+        rem_addr_length = sizeof(rem_addr);
+       mlen = -1;
        while (!exit_flag) {
-               FD_SET(ac_sockfd[ac], &fdset);
                ret = select(ac_sockfd[ac]+1, &fdset, NULL, NULL, NULL);
                if (ret < 0) {
                        if (errno == EINTR) continue;
-                       perror("receiver select");
-                       goto out;
+                       error(0, errno, "receiver select");
+                       return -1;
                }
-               mlen = recvfrom(ac_sockfd[ac], &msg, sizeof(msg), 0,
+               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)
+{
+       size_t mlen;
+
+       mlen = frsh_receive_sync(stream->resp_endpoint, msg, sizeof(*msg), &mlen, NULL);
+       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 ts;
+       uint64_t send_timestamp, server_timestamp, recv_timestamp;
+       int     mlen;
+       intptr_t ac;
+       
+       min_trans_time = ~0;
+       
+       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 = (intptr_t)arg;
+               mlen = recv_packet_native(ac, &msg);
+#endif
                if (mlen < 0) {
-                       perror("Chyba pri prijimani pozadavku");
+                       if (errno != EINTR)
+                               error(0, errno, "receive_packet error");
                        goto out;
                }       
-               clock_gettime(CLOCK_REALTIME,&recv_timestamp);
+               clock_gettime(CLOCK_REALTIME,&ts);
+               recv_timestamp = ts.tv_sec*1000000000LL + ts.tv_nsec;
                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) {
+
+               if (send_timestamp < reset_timestamp) {
                        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);
+               trans_time_usec = (recv_timestamp - send_timestamp) / 2 / 1000;
+               client_to_server_usec = (server_timestamp - send_timestamp) / 1000;
+               server_to_client_usec = (recv_timestamp - server_timestamp) / 1000;
 
                pthread_mutex_lock(&delay_stats_mutex);
-               if (trans_time_usec < MAX_DELAY_US) {
+               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) {
@@ -393,7 +456,12 @@ void* receiver(void* queue)
                        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++;
                
                pthread_mutex_lock(&streams[msg.stream].mutex);
@@ -419,12 +487,26 @@ out:
  * @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(struct stream* stream, union msg_buff* buff)
+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 (sendto(ac_sockfd[stream->ac], buff, stream->packet_size, 0,
-                     (struct sockaddr*)&stream->rem_addr, sizeof(stream->rem_addr)) < 0) {
+       
+       while (sendmsg(ac_sockfd[stream->ac], &msg, 0) < 0) {
                if (errno == EINTR) continue;
                if (errno == EAGAIN) {
                        if (opt_wait_for_queue_is_full && 
@@ -437,13 +519,25 @@ send_packet(struct stream* stream, union msg_buff* buff)
                        ret = 0;
                        break;
                } else {
-                       perror("Error while sending");
+                       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 = frsh_send_sync(stream->endpoint, buff, stream->packet_size);
+
+       return (ret == 0) ? 0 : -1;
+}
+#endif
 
 static inline void
 wait_for_next_send(struct stream* stream, struct timespec *last_send_time)
@@ -473,12 +567,14 @@ void* sender(void* arg)
        union msg_buff buff;
        unsigned long int seqn;
        struct stream* stream = (struct stream*) arg;
-       char stream_desc[100];
+       struct timespec ts;
        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;
 
@@ -493,7 +589,8 @@ void* sender(void* arg)
 /*             buff.msg.tos = ac_to_tos[stream->ac]; */
                buff.msg.stream = stream-streams;
                
-               clock_gettime(CLOCK_REALTIME,&buff.msg.send_timestamp);
+               clock_gettime(CLOCK_REALTIME,&ts);
+               buff.msg.send_timestamp = ts.tv_sec*1000000000LL + ts.tv_nsec;
 
                ret = send_packet(stream, &buff);
                if (ret < 0) {
@@ -511,20 +608,141 @@ void* sender(void* arg)
                fflush(stdout);
 #endif
 
-               wait_for_next_send(stream, &buff.msg.send_timestamp);
+               wait_for_next_send(stream, &ts);
        }
 out:
        sem_post(&sem_thread_finished);
        return NULL;
 }
 
+#ifdef WITH_FWP
+static int negotiate_contract_for_stream_fwp(struct stream *stream)
+{
+       frsh_contract_t contract;
+       int ret;
+       frsh_rel_time_t budget, period, deadline;
+       frsh_signal_info_t si;
+
+       /* Contract for client->server stream */
+       frsh_contract_init(&contract);
+       frsh_contract_set_resource_and_label(&contract, FRSH_RT_NETWORK, FRSH_NETPF_FWP, NULL);
+       frsh_network_bytes_to_budget(FRSH_NETPF_FWP, stream->packet_size, &budget);
+       period = frsh_usec_to_rel_time(stream->period_usec);
+       frsh_contract_set_basic_params(&contract, &budget, &period, FRSH_WT_BOUNDED, FRSH_CT_REGULAR);
+       deadline = frsh_usec_to_rel_time(3*stream->period_usec);
+       frsh_contract_set_timing_reqs(&contract, false, &deadline, 0, si, 0, si);
+       
+       ret = frsh_contract_negotiate(&contract, &stream->vres);
+       frsh_contract_destroy(&contract);
+       if (ret != 0) {
+               stream->vres = NULL;
+               fprintf(stderr, "Send contract was not accepted\n");
+               return ret;
+       }
+
+       /* Contract for server->client stream */
+       /* TODO: Use group negotiation for these two contracts */
+       frsh_contract_init(&contract);
+       frsh_contract_set_resource_and_label(&contract, FRSH_RT_NETWORK, FRSH_NETPF_FWP, NULL);
+       frsh_network_bytes_to_budget(FRSH_NETPF_FWP, stream->packet_size, &budget);
+       period = frsh_usec_to_rel_time(stream->period_usec);
+       frsh_contract_set_basic_params(&contract, &budget, &period, FRSH_WT_BOUNDED, FRSH_CT_DUMMY);
+       deadline = frsh_usec_to_rel_time(3*stream->period_usec);
+       frsh_contract_set_timing_reqs(&contract, false, &deadline, 0, si, 0, si);
+
+       ret = frsh_contract_negotiate(&contract, &stream->vres_rcv);
+       frsh_contract_destroy(&contract);
+       if (ret != 0) {
+               fprintf(stderr, "Receive contract was not accepted\n");
+               return ret;
+       }
+
+       /* We don't use the vres at server, since the server doesn't
+        * know the parameters. Instread, server uses plain
+        * sockets. */
+       
+       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;
+       frsh_contract_t c;
+       fres_block_fwp_sched *fwp_sched;
+
+       frsh_vres_get_contract(stream->vres, &c);
+       fwp_sched = fres_contract_get_fwp_sched(c);
+
+       stream->ac = fwp_sched->ac_id;
+
+/*     fwp_endpoint_attr_init(&attr); */
+/*     fwp_endpoint_attr_setreliability(&attr, FWP_EPOINT_BESTEFFORT); */
+
+       ph = gethostbyname(server_addr);
+       if (ph && ph->h_addr_list[0]) {
+               struct in_addr *a = (struct in_addr *)(ph->h_addr_list[0]);
+               frsh_send_endpoint_protocol_info_t    spi = { NULL, 0 };
+               frsh_receive_endpoint_protocol_info_t rpi = { NULL, 0 };
+               frsh_endpoint_queueing_info_t qi = { .queue_size=0, .queue_policy=FRSH_QRP_OLDEST };
+               ret = frsh_send_endpoint_create(FRSH_NETPF_FWP, a->s_addr, BASE_PORT + stream->ac, 
+                                               spi, &stream->endpoint);
+               if (ret < 0) error(1, errno, "frsh_send_endpoint_create()");
+               
+               ret = frsh_send_endpoint_bind(stream->vres, stream->endpoint);
+               if (ret != 0) error(1, errno, "frsh_send_endpoint_bind");
+
+               ret = frsh_receive_endpoint_create(FRSH_NETPF_FWP, 0, qi, rpi,
+                                                  &stream->resp_endpoint);
+               if (ret != 0) error(1, errno, "fwp_receive_endpoint_create");
+               
+               unsigned int port;
+               frsh_receive_endpoint_get_params(stream->resp_endpoint, NULL, &port, NULL, 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;
-       struct hostent* ph;
+       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;
 
@@ -542,31 +760,27 @@ calc_stream_params(struct stream *stream)
        } else {
                char buf[200];
                stream_to_text(buf, sizeof(buf), stream, 0);
-               fprintf(stderr, "Neither packet size nor period was specified for a stream %s\n", buf);
-               exit(1);
+               error(1, 0, "Neither packet size nor period was specified for a stream %s", buf);
        }
 
        if (packet_size < sizeof(struct msg_t)) {
-               fprintf(stderr, "Packet size too small (min %d)\n", sizeof(struct msg_t));
-               exit(1);
+               error(1, 0, "Packet size too small (min %zd)", sizeof(struct msg_t));
        }
 
        stream->packet_size = packet_size;
        stream->period_usec = period_usec;
        stream->jitter = opt_jitter;
 
-       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 {
-               perror("Unknown server");
-               exit(1);
+       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;
        }
-       stream->rem_addr.sin_port = htons(BASE_PORT + stream->ac);
-
 }
 
 /** 
@@ -607,7 +821,7 @@ char* parse_bandwidths(char *params)
                                return params;
                        params = next_char;
                } else
-                       bw = opt_def_bandwidth;
+                       bw = -1;
                
                sp->bandwidth_bps = bw*Kbit;
 
@@ -628,8 +842,8 @@ char* parse_bandwidths(char *params)
                                        return params;
                                params = next_char;
                        } else {
-                               packet_size = opt_packet_size;
-                               period = opt_def_period_msec;
+                               packet_size = -1; 
+                               period = -1;
                        }
                }
                sp->period_usec = period*MSEC_TO_USEC;
@@ -647,43 +861,183 @@ char* parse_bandwidths(char *params)
        return NULL;
 }
 
+#ifdef WITH_FWP
+void wait_for_all_threads_to_finish_fwp(void)
+{
+       int i;
+       /* wait for all threads to finish */
+       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
+
+WINDOW *logwin;
+
+struct log_params {
+       ul_log_domain_t *domain;
+       int level;
+       const char *format;
+       va_list ap;
+};
+
+
+int locked_log(WINDOW *logwin, void *arg)
+{
+       struct log_params *p = arg;
+       if(!(p->level&UL_LOGL_CONT)) {
+               p->level&=UL_LOGL_MASK;
+               if(p->level)
+                       wprintw(logwin,"<%d>", p->level);
+               if(p->domain && p->domain->name)
+                       wprintw(logwin,"%s: ",p->domain->name);
+       }
+       vwprintw(logwin, p->format, p->ap);
+       wnoutrefresh(logwin);
+       return 0;
+}
+
+void
+wclient_log_fnc(ul_log_domain_t *domain, int level,
+               const char *format, va_list ap)
+{
+       struct log_params p = {
+               .domain = domain,
+               .level = level,
+               .format = format,
+       };
+       va_copy(p.ap, ap);
+       va_end(ap);
+
+       use_window(logwin, locked_log, (void*)&p);
+}
+
+
+void init_gui()
+{
+       initscr();
+       cbreak();
+       noecho();
+
+       logwin = newwin(0, 0, LINES/2, 0);
+       if (logwin) {
+               scrollok(logwin, TRUE);
+               ul_log_redir(wclient_log_fnc, 0);
+       }
+}
+
+void end_gui()
+{
+       endwin();
+       if (logwin) {
+               ul_log_redir(NULL, 0);
+       }
+}
+
+
+#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);
+       }
+       wnoutrefresh(stdscr);
+       doupdate();
+}
+#else
+void init_gui() {}
+void end_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, seconds;
+       int i, rc, frames, seconds;
        pthread_attr_t attr;
        pthread_t thread;
        char opt;
 
 
-       while ((opt = getopt(argc, argv, "B:b:c:g:j:o:qQ:s:T:")) != -1) {
+       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 *error;
-                               error = parse_bandwidths(optarg);
-                               if (error != NULL) {
-                                       if (*error == '\0')
-                                               fprintf(stderr, "Bandwidth parse error - string to short\n");
+                               char *errpos;
+                               errpos = parse_bandwidths(optarg);
+                               if (errpos != NULL) {
+                                       if (*errpos == '\0')
+                                               error(1, 0, "Bandwidth parse error - string to short");
                                        else
-                                               fprintf(stderr, "Bandwidth parse error at '%s'\n", error);
-                                       exit(1);
+                                               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) {
-                                       fprintf(stderr, "Granulatiry too small (min %d)!\n", MIN_GRANULARITY);
-                                       exit(1);
+                                       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;
@@ -705,8 +1059,10 @@ int main(int argc, char *argv[])
                                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\n");
                                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");
@@ -717,15 +1073,13 @@ int main(int argc, char *argv[])
                }
        }
        if (opt_packet_size && opt_def_period_msec) {
-               fprintf(stderr, "Error: Nonzero -T and -s can't be used together!.\n");
-               exit(1);
+               error(1, 0, "Error: Nonzero -T and -s can't be used together!");
        }
 
        if (optind < argc) {
                server_addr = argv[optind];
        } else {
-               fprintf(stderr, "Expected server address argument\n");
-               exit(1);
+               error(1, 0, "Expected server address argument");
        }
 
        if (nr_streams == 0)
@@ -736,17 +1090,14 @@ int main(int argc, char *argv[])
        snprintf(logfname, sizeof(logfname), "%s.dat", opt_output);
 
        if ((logfd = fopen(logfname,"w+")) == NULL) {
-               fprintf(stderr,"Can not open %s\n", logfname);
-               exit(1);
+               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");
-               exit(1);
+               error(1, errno, "Signal handler registration error");
        }
 
        struct sigaction sa;
@@ -754,14 +1105,20 @@ int main(int argc, char *argv[])
        sa.sa_flags = 0;        /* don't restart syscalls */
 
        if (sigaction(SIGUSR1, &sa, NULL) < 0) {
-               perror("sigaction error");
-               exit(1);
+               error(1, errno, "sigaction error");
        }
 
        sem_init(&sem_thread_finished, 0, 0);
 
        reset_statistics();
 
+#ifdef WITH_FWP
+       rc = frsh_init();
+       if (rc != 0) {
+               error(1, errno, "FWP initialization failed");
+       }
+#else
+       intptr_t ac;
        /* create four receivers each per AC */
        for (ac = AC_NUM - 1; ac >= 0; ac--) {
                ac_sockfd[ac] = create_ac_socket(ac);
@@ -770,48 +1127,77 @@ int main(int argc, char *argv[])
                }
                rc = pthread_create(&receivers[ac].thread, &attr, receiver, (void*) ac);
                if (rc) {
-                       fprintf(stderr, "Error while creating receiver %d\n",rc);
-                       return 1;
+                       error(1, rc, "Error while creating receiver");
                }
+               receivers[ac].valid = true;
        }               
+#endif
+
                        
+       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);
+       }
        /* 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) {
-                       fprintf(stderr, "Error while creating sender %d\n",rc);
-                       return 1;
-               }
+               if (rc) error(1, rc, "Error while creating sender");
        }
-       
-       seconds = 0;
-       while (!exit_flag) {
-               sleep(1);
-               seconds++;
-               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);
+
+       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();
                }
-               fflush(stderr);
-               if (seconds == opt_count_sec)
-                       stopper();
        }
 
-       fprintf(stderr, "\nWaiting for threads to finish\n");
-       /* Wait for all threads to finish */
-       for (i=0; i < nr_streams + AC_NUM; i++) {
-               sem_wait(&sem_thread_finished);
+#ifdef WITH_FWP
+       end_gui();
+       for (i=0; i < nr_streams; i++) {
+               if (streams[i].vres)
+                       frsh_contract_cancel(streams[i].vres);
+               if (streams[i].vres_rcv)
+                       frsh_contract_cancel(streams[i].vres_rcv);
        }
-       struct timespec end_timestamp, measure_length;
-       clock_gettime(CLOCK_REALTIME,&end_timestamp);
-       timespec_sub(&measure_length, &end_timestamp, &reset_timestamp);
+#else
+       fprintf(stderr, "\nWaiting for threads to finish\n");
+       wait_for_all_threads_to_finish();
+
+       struct timespec ts;
+       uint64_t end_timestamp, measure_length;
+       clock_gettime(CLOCK_REALTIME,&ts);
+       end_timestamp = ts.tv_sec*1000000000LL+ts.tv_nsec;
+       measure_length = end_timestamp - reset_timestamp;
 
-       save_results(argc, argv, timespec2usec(&measure_length));
+       save_results(argc, argv, measure_length/1000);
+#endif
 
        return 0;
 }