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sfc: add extra RX drop counters for nodesc_trunc and noskb_drop

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Added a counter rx_noskb_drop for failure to allocate an skb.
Summed the per-channel rx_nodesc_trunc counters earlier so that they can
 be included in rx_dropped.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Edward Cree
2014-07-15 11:58:12 +01:00
committed by David S. Miller
parent d762d03849
commit e4d112e4f9
9 changed files with 56 additions and 10 deletions
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9
drivers/net/ethernet/sfc/siena.c
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@@ -424,6 +424,8 @@ static void siena_remove_nic(struct efx_nic *efx)
{ #ext_name, 64, 8 * MC_CMD_MAC_ ## mcdi_name }
#define SIENA_OTHER_STAT(ext_name) \
[SIENA_STAT_ ## ext_name] = { #ext_name, 0, 0 }
#define GENERIC_SW_STAT(ext_name) \
[GENERIC_STAT_ ## ext_name] = { #ext_name, 0, 0 }
static const struct efx_hw_stat_desc siena_stat_desc[SIENA_STAT_COUNT] = {
SIENA_DMA_STAT(tx_bytes, TX_BYTES),
@@ -483,6 +485,8 @@ static const struct efx_hw_stat_desc siena_stat_desc[SIENA_STAT_COUNT] = {
SIENA_DMA_STAT(rx_length_error, RX_LENGTH_ERROR_PKTS),
SIENA_DMA_STAT(rx_internal_error, RX_INTERNAL_ERROR_PKTS),
SIENA_DMA_STAT(rx_nodesc_drop_cnt, RX_NODESC_DROPS),
GENERIC_SW_STAT(rx_nodesc_trunc),
GENERIC_SW_STAT(rx_noskb_drops),
};
static const unsigned long siena_stat_mask[] = {
[0 ... BITS_TO_LONGS(SIENA_STAT_COUNT) - 1] = ~0UL,
@@ -528,6 +532,7 @@ static int siena_try_update_nic_stats(struct efx_nic *efx)
efx_update_diff_stat(&stats[SIENA_STAT_rx_good_bytes],
stats[SIENA_STAT_rx_bytes] -
stats[SIENA_STAT_rx_bad_bytes]);
efx_update_sw_stats(efx, stats);
return 0;
}
@@ -554,7 +559,9 @@ static size_t siena_update_nic_stats(struct efx_nic *efx, u64 *full_stats,
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];
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 =