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net: bcmgenet: Track per TX/RX rings statistics

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__bcmgenet_tx_reclaim() is currently summing TX bytes/packets in a way
that is not SMP friendly, mutliples CPUs could run
__bcmgenet_tx_reclaim() independently and still update stats->tx_bytes
and stats->tx_packets, cloberring the other CPUs statistics.

Fix this by tracking per RX and TX rings the number of bytes, packets,
dropped and errors statistics, and provide a bcmgenet_get_stats()
function which aggregates everything and returns a consistent output.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli
2017-03-16 10:27:08 -07:00
committed by David S. Miller
parent bf4e0a3db9
commit 37a30b435b
2 changed files with 75 additions and 8 deletions
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6
drivers/net/ethernet/broadcom/genet/bcmgenet.h
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@@ -552,6 +552,8 @@ struct bcmgenet_skb_cb {
struct bcmgenet_tx_ring {
spinlock_t lock; /* ring lock */
struct napi_struct napi; /* NAPI per tx queue */
unsigned long packets;
unsigned long bytes;
unsigned int index; /* ring index */
unsigned int queue; /* queue index */
struct enet_cb *cbs; /* tx ring buffer control block*/
@@ -570,6 +572,10 @@ struct bcmgenet_tx_ring {
struct bcmgenet_rx_ring {
struct napi_struct napi; /* Rx NAPI struct */
unsigned long bytes;
unsigned long packets;
unsigned long errors;
unsigned long dropped;
unsigned int index; /* Rx ring index */
struct enet_cb *cbs; /* Rx ring buffer control block */
unsigned int size; /* Rx ring size */