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Subject[PATCH net-next v5 08/10] forcedeth: account for dropped RX frames
Date
This adds code to update the stats counter for dropped RX frames.



Signed-off-by: David Decotigny <david.decotigny@google.com>
---
drivers/net/ethernet/nvidia/forcedeth.c | 12 ++++++++++--
1 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/nvidia/forcedeth.c b/drivers/net/ethernet/nvidia/forcedeth.c
index 6aeb0d6..d9b5a4d 100644
--- a/drivers/net/ethernet/nvidia/forcedeth.c
+++ b/drivers/net/ethernet/nvidia/forcedeth.c
@@ -824,6 +824,7 @@ struct fe_priv {
struct nv_driver_stat stat_rx_packets;
struct nv_driver_stat stat_rx_bytes; /* not always available in HW */
struct nv_driver_stat stat_rx_missed_errors;
+ struct nv_driver_stat stat_rx_dropped;

/* media detection workaround.
* Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
@@ -1739,6 +1740,7 @@ static void nv_update_stats(struct net_device *dev)
/* update software stats */
NV_DRIVER_STAT_UPDATE_TOTAL(&np->stat_rx_packets);
NV_DRIVER_STAT_UPDATE_TOTAL(&np->stat_rx_bytes);
+ NV_DRIVER_STAT_UPDATE_TOTAL(&np->stat_rx_dropped);
NV_DRIVER_STAT_UPDATE_TOTAL(&np->stat_rx_missed_errors);

NV_DRIVER_STAT_UPDATE_TOTAL(&np->stat_tx_packets);
@@ -1786,6 +1788,8 @@ nv_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *storage)
&np->stat_tx_bytes);
storage->rx_errors = np->estats.rx_errors_total;
storage->tx_errors = np->estats.tx_errors_total;
+ storage->rx_dropped = NV_DRIVER_STAT_GET_TOTAL(
+ &np->stat_rx_dropped);
storage->tx_dropped = NV_DRIVER_STAT_GET_TOTAL(
&np->stat_tx_dropped);

@@ -1841,8 +1845,10 @@ static int nv_alloc_rx(struct net_device *dev)
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 {
+ NV_DRIVER_STAT_ATOMIC_INC(&np->stat_rx_dropped);
return 1;
+ }
}
return 0;
}
@@ -1873,8 +1879,10 @@ static int nv_alloc_rx_optimized(struct net_device *dev)
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 {
+ NV_DRIVER_STAT_ATOMIC_INC(&np->stat_rx_dropped);
return 1;
+ }
}
return 0;
}
--
1.7.3.1


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