bnx2x: Add new SW stat 'tx_exhaustion_events'

Driver already has an internal counter for number of times a given queue
had to be stopped due to Tx ring exhaustion.
This add the counter to the statistics presented by driver, e.g., by using
`ethtool -S'.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
index d84efcd..1dc77ac 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
@@ -52,7 +52,7 @@ static const struct {
        { Q_STATS_OFFSET32(rx_skb_alloc_failed),
                                         4, "[%s]: rx_skb_alloc_discard" },
        { Q_STATS_OFFSET32(hw_csum_err), 4, "[%s]: rx_csum_offload_errors" },
-
+       { Q_STATS_OFFSET32(driver_xoff), 4, "[%s]: tx_exhaustion_events" },
        { Q_STATS_OFFSET32(total_bytes_transmitted_hi), 8, "[%s]: tx_bytes" },
 /* 10 */{ Q_STATS_OFFSET32(total_unicast_packets_transmitted_hi),
                                                8, "[%s]: tx_ucast_packets" },
@@ -128,7 +128,8 @@ static const struct {
                                4, STATS_FLAGS_BOTH, "rx_skb_alloc_discard" },
        { STATS_OFFSET32(hw_csum_err),
                                4, STATS_FLAGS_BOTH, "rx_csum_offload_errors" },
-
+       { STATS_OFFSET32(driver_xoff),
+                               4, STATS_FLAGS_BOTH, "tx_exhaustion_events" },
        { STATS_OFFSET32(total_bytes_transmitted_hi),
                                8, STATS_FLAGS_BOTH, "tx_bytes" },
        { STATS_OFFSET32(tx_stat_ifhcoutbadoctets_hi),