void sprint_hw_stats(router_state *rs, char **buf, unsigned int *len) {
char *buffer = calloc(4*HW_STATS_LEN + 1, sizeof(char));
unsigned int total_len = 0;
char* port_names[8] = {"eth0", "eth1", "eth2", "eth3", "cpu0", "cpu1", "cpu2", "cpu3"};
lock_netfpga_stats(rs);
int i;
char line[HW_STATS_LEN];
bzero(line, HW_STATS_LEN);
for (i = 0; i < 4; ++i) {
snprintf(line, HW_STATS_LEN, "%-4s %12.2f PPS %12.2f kB/s %-4s %12.2f PPS %12.2f kB/s\n",
port_names[i], rs->stats_avg[i][0], rs->stats_avg[i][1],
port_names[i+4], rs->stats_avg[i+4][0], rs->stats_avg[i+4][1]);
COPY_STRING(buffer, total_len, line);
}
unlock_netfpga_stats(rs);
*buf = buffer;
*len = total_len;
}
/*
* Stats thread for the NETFPGA Ports
*/
void* netfpga_stats(void* arg) {
router_state* rs = (router_state*)arg;
struct timeval now;
uint32_t rx_packets, tx_packets, rx_bytes, tx_bytes;
uint32_t rx_packets_diff, tx_packets_diff, rx_bytes_diff, tx_bytes_diff;
long double timeDiff;
int i, j;
while (1) {
// printf("or_netfpga.c: NetFPGA begin recording its stats...\n");
gettimeofday(&now, NULL);
if (now.tv_sec == rs->stats_last_time.tv_sec) {
/* must be a later usec time */
timeDiff = (((long double)(now.tv_usec - rs->stats_last_time.tv_usec)) / (long double)1000000);
} else {
timeDiff = (now.tv_sec - rs->stats_last_time.tv_sec - 1) + ((long double)((1000000 - rs->stats_last_time.tv_usec) + now.tv_usec) / (long double)1000000);
}
lock_netfpga_stats(rs);
printf("port # rx_pkts tx_pkts rx_kbytes tx_kbytes pkt/s kbyte/s time\n");
printf("======================================================================================\n");
for (i = 0; i < 8; ++i) {
/* read all the values */
rx_packets = get_rx_queue_num_pkts_received(&rs->netfpga, i);
tx_packets = get_tx_queue_num_pkts_sent(&rs->netfpga, i);
rx_bytes = get_rx_queue_num_bytes_received(&rs->netfpga, i);
tx_bytes = get_tx_queue_num_bytes_sent(&rs->netfpga, i);
/* compute differences */
rx_packets_diff = rx_packets - rs->stats_last[i][0];
tx_packets_diff = tx_packets - rs->stats_last[i][1];
rx_bytes_diff = rx_bytes - rs->stats_last[i][2];
tx_bytes_diff = tx_bytes - rs->stats_last[i][3];
/* bytes_diff will be in kB */
rx_bytes_diff /= 1024;
tx_bytes_diff /= 1024;
/* update averages */
rs->stats_avg[i][0] = ((double)rx_packets_diff) / timeDiff;
rs->stats_avg[i][1] = ((double)tx_packets_diff) / timeDiff;
rs->stats_avg[i][2] = ((double)rx_bytes_diff) / timeDiff;
rs->stats_avg[i][3] = ((double)tx_bytes_diff) / timeDiff;
/* store data back */
rs->stats_last[i][0] = rx_packets;
rs->stats_last[i][1] = tx_packets;
rs->stats_last[i][2] = rx_bytes;
rs->stats_last[i][3] = tx_bytes;
rs->stats_last_time = now;
printf("%6d %10d %10d %10d %10d %8.2Lf %8.2Lf %u\n", i, rs->stats_last[i][0], rs->stats_last[i][1], rs->stats_last[i][2], rs->stats_last[i][3], rs->stats_avg[i][0] + rs->stats_avg[i][1], rs->stats_avg[i][2] + rs->stats_avg[i][3], now);
}
node* cur = NULL;
pwospf_router* r = get_router_by_rid(rs->router_id, rs->pwospf_router_list);
if (r != NULL) {
cur = r->interface_list;
j = 0;
while (cur) {
pwospf_interface* iface = (pwospf_interface*)cur->data;
iface->rx_rate = (uint32_t)(rs->stats_avg[j][2]);
iface->tx_rate = (uint32_t)(rs->stats_avg[j][3]);
//printf("or_netfpga.c: iface->rx_rate[%d] = %d (kbytes)\n", j, iface->rx_rate);
//printf("or_netfpga.c: iface->tx_rate[%d] = %d (kbytes)\n", j, iface->tx_rate);
cur = cur->next;
j++;
}
}
unlock_netfpga_stats(rs);
printf("======================================================================================\n");
printf("or_netfpga.c: NetFPGA end recording its stats.\n");
printf("or_netfpga.c: There are %d interfaces in this router.\n", j);
usleep(500000);
}
return NULL;
}
