forcedeth: account for dropped RX frames
This adds code to update the stats counter for dropped RX frames.
Signed-off-by: David Decotigny <david.decotigny@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/nvidia/forcedeth.c b/drivers/net/ethernet/nvidia/forcedeth.c
index 5d94c33..b34975d 100644
--- a/drivers/net/ethernet/nvidia/forcedeth.c
+++ b/drivers/net/ethernet/nvidia/forcedeth.c
@@ -815,6 +815,7 @@
u64 stat_rx_packets;
u64 stat_rx_bytes; /* not always available in HW */
u64 stat_rx_missed_errors;
+ u64 stat_rx_dropped;
/* media detection workaround.
* Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
@@ -1758,6 +1759,7 @@
syncp_start = u64_stats_fetch_begin(&np->swstats_rx_syncp);
storage->rx_packets = np->stat_rx_packets;
storage->rx_bytes = np->stat_rx_bytes;
+ storage->rx_dropped = np->stat_rx_dropped;
storage->rx_missed_errors = np->stat_rx_missed_errors;
} while (u64_stats_fetch_retry(&np->swstats_rx_syncp, syncp_start));
@@ -1828,8 +1830,12 @@
np->put_rx.orig = np->first_rx.orig;
if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
np->put_rx_ctx = np->first_rx_ctx;
- } else
+ } else {
+ u64_stats_update_begin(&np->swstats_rx_syncp);
+ np->stat_rx_dropped++;
+ u64_stats_update_end(&np->swstats_rx_syncp);
return 1;
+ }
}
return 0;
}
@@ -1860,8 +1866,12 @@
np->put_rx.ex = np->first_rx.ex;
if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
np->put_rx_ctx = np->first_rx_ctx;
- } else
+ } else {
+ u64_stats_update_begin(&np->swstats_rx_syncp);
+ np->stat_rx_dropped++;
+ u64_stats_update_end(&np->swstats_rx_syncp);
return 1;
+ }
}
return 0;
}