/**
* Evaluate TX/RX bytes of switch ports.
* @bp:
* @return:
* < 0: always turn on LED
* >= NR_BLED_INTERVAL_SET: always turn on LED
* otherwise: blink LED in accordance with bp->intervals[RETURN_VALUE]
*/
unsigned int swports_check_traffic(struct bled_priv *bp)
{
int p, c;
unsigned int b = 0, m;
unsigned long d, diff, rx_bytes, tx_bytes;
struct swport_bled_ifstat *ifs;
struct swport_bled_priv *sp = bp->check_priv;
m = sp->port_mask;
for (p = 0, c = 0, diff = 0, ifs = &sp->portstat[0]; m > 0; ++p, ++ifs, m >>= 1) {
if (!(m & 1))
continue;
get_port_stats(p, &rx_bytes, &tx_bytes);
if (unlikely(!ifs->last_rx_bytes && !ifs->last_tx_bytes)) {
ifs->last_rx_bytes = rx_bytes;
ifs->last_tx_bytes = tx_bytes;
continue;
}
d = bdiff(ifs->last_rx_bytes, rx_bytes) + bdiff(ifs->last_tx_bytes, tx_bytes);
diff += d;
if (unlikely(bp->flags & BLED_FLAGS_DBG_CHECK_FUNC)) {
prn_bl_v("GPIO#%d: port %2d, d %10lu (RX %10lu,%10lu / TX %10lu,%10lu)\n",
bp->gpio_nr, p, d, ifs->last_rx_bytes, rx_bytes,
ifs->last_tx_bytes, tx_bytes);
}
ifs->last_rx_bytes = rx_bytes;
ifs->last_tx_bytes = tx_bytes;
c++;
}
if (likely(diff >= bp->threshold))
b = 1;
if (unlikely(!c))
bp->next_check_interval = BLED_WAIT_IF_INTERVAL;
return b;
}
/**
* Reset statistics information.
* @bp:
* @return:
*/
int swports_reset_check_traffic(struct bled_priv *bp)
{
int p;
unsigned int m;
unsigned long rx_bytes, tx_bytes;
struct swport_bled_ifstat *ifs;
struct swport_bled_priv *sp = bp->check_priv;
m = sp->port_mask;
for (p = 0, ifs = &sp->portstat[0]; m > 0; ++p, ++ifs, m >>= 1) {
ifs->last_rx_bytes = 0;
ifs->last_tx_bytes = 0;
if (!(m & 1))
continue;
get_port_stats(p, &rx_bytes, &tx_bytes);
ifs->last_rx_bytes = rx_bytes;
ifs->last_tx_bytes = tx_bytes;
}
return 0;
}
static struct snobj *handle_get_port_stats(struct snobj *arg)
{
const char *port_name;
struct port *port;
port_stats_t stats;
struct snobj *r;
struct snobj *inc;
struct snobj *out;
port_name = snobj_str_get(arg);
if (!port_name)
return snobj_err(EINVAL, "Argument must be a name in str");
port = find_port(port_name);
if (!port)
return snobj_err(ENOENT, "No port `%s' found", port_name);
get_port_stats(port, &stats);
inc = snobj_map();
snobj_map_set(inc, "packets", snobj_uint(stats[PACKET_DIR_INC].packets));
snobj_map_set(inc, "dropped", snobj_uint(stats[PACKET_DIR_INC].dropped));
snobj_map_set(inc, "bytes", snobj_uint(stats[PACKET_DIR_INC].bytes));
out = snobj_map();
snobj_map_set(out, "packets", snobj_uint(stats[PACKET_DIR_OUT].packets));
snobj_map_set(out, "dropped", snobj_uint(stats[PACKET_DIR_OUT].dropped));
snobj_map_set(out, "bytes", snobj_uint(stats[PACKET_DIR_OUT].bytes));
r = snobj_map();
snobj_map_set(r, "inc", inc);
snobj_map_set(r, "out", out);
snobj_map_set(r, "timestamp", snobj_double(get_epoch_time()));
return r;
}