static void siena_update_nic_stats(struct efx_nic *efx)
{
int retry;
/* If we're unlucky enough to read statistics wduring the DMA, wait
* up to 10ms for it to finish (typically takes <500us) */
for (retry = 0; retry < 100; ++retry) {
if (siena_try_update_nic_stats(efx) == 0)
return;
udelay(100);
}
/* Use the old values instead */
}
static size_t siena_update_nic_stats(struct efx_nic *efx, u64 *full_stats,
struct rtnl_link_stats64 *core_stats)
{
struct siena_nic_data *nic_data = efx->nic_data;
u64 *stats = nic_data->stats;
int retry;
/* If we're unlucky enough to read statistics wduring the DMA, wait
* up to 10ms for it to finish (typically takes <500us) */
for (retry = 0; retry < 100; ++retry) {
if (siena_try_update_nic_stats(efx) == 0)
break;
udelay(100);
}
if (full_stats)
memcpy(full_stats, stats, sizeof(u64) * SIENA_STAT_COUNT);
if (core_stats) {
core_stats->rx_packets = stats[SIENA_STAT_rx_packets];
core_stats->tx_packets = stats[SIENA_STAT_tx_packets];
core_stats->rx_bytes = stats[SIENA_STAT_rx_bytes];
core_stats->tx_bytes = stats[SIENA_STAT_tx_bytes];
core_stats->rx_dropped = stats[SIENA_STAT_rx_nodesc_drop_cnt] +
stats[GENERIC_STAT_rx_nodesc_trunc] +
stats[GENERIC_STAT_rx_noskb_drops];
core_stats->multicast = stats[SIENA_STAT_rx_multicast];
core_stats->collisions = stats[SIENA_STAT_tx_collision];
core_stats->rx_length_errors =
stats[SIENA_STAT_rx_gtjumbo] +
stats[SIENA_STAT_rx_length_error];
core_stats->rx_crc_errors = stats[SIENA_STAT_rx_bad];
core_stats->rx_frame_errors = stats[SIENA_STAT_rx_align_error];
core_stats->rx_fifo_errors = stats[SIENA_STAT_rx_overflow];
core_stats->tx_window_errors =
stats[SIENA_STAT_tx_late_collision];
core_stats->rx_errors = (core_stats->rx_length_errors +
core_stats->rx_crc_errors +
core_stats->rx_frame_errors +
stats[SIENA_STAT_rx_symbol_error]);
core_stats->tx_errors = (core_stats->tx_window_errors +
stats[SIENA_STAT_tx_bad]);
}
return SIENA_STAT_COUNT;
}
