bnxt_en: Add PFC statistics.

Report PFC statistics to ethtool -S and DCBNL.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 2a714cf..b4abc1b 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -1124,6 +1124,13 @@ struct bnxt {
        u32                     lpi_tmr_hi;
 };
 
+#define BNXT_RX_STATS_OFFSET(counter)                  \
+       (offsetof(struct rx_port_stats, counter) / 8)
+
+#define BNXT_TX_STATS_OFFSET(counter)                  \
+       ((offsetof(struct tx_port_stats, counter) +     \
+         sizeof(struct rx_port_stats) + 512) / 8)
+
 #ifdef CONFIG_NET_RX_BUSY_POLL
 static inline void bnxt_enable_poll(struct bnxt_napi *bnapi)
 {

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c
index f391b47..fdf2d8c 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c
@@ -347,8 +347,10 @@ static int bnxt_dcbnl_ieee_setets(struct net_device *dev, struct ieee_ets *ets)
 static int bnxt_dcbnl_ieee_getpfc(struct net_device *dev, struct ieee_pfc *pfc)
 {
        struct bnxt *bp = netdev_priv(dev);
+       __le64 *stats = (__le64 *)bp->hw_rx_port_stats;
        struct ieee_pfc *my_pfc = bp->ieee_pfc;
-       int rc;
+       long rx_off, tx_off;
+       int i, rc;
 
        pfc->pfc_cap = bp->max_lltc;
 
@@ -369,6 +371,16 @@ static int bnxt_dcbnl_ieee_getpfc(struct net_device *dev, struct ieee_pfc *pfc)
        pfc->mbc = my_pfc->mbc;
        pfc->delay = my_pfc->delay;
 
+       if (!stats)
+               return 0;
+
+       rx_off = BNXT_RX_STATS_OFFSET(rx_pfc_ena_frames_pri0);
+       tx_off = BNXT_TX_STATS_OFFSET(tx_pfc_ena_frames_pri0);
+       for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++, rx_off++, tx_off++) {
+               pfc->requests[i] = le64_to_cpu(*(stats + tx_off));
+               pfc->indications[i] = le64_to_cpu(*(stats + rx_off));
+       }
+
        return 0;
 }
 

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index fa6125e..784aa77 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -107,16 +107,9 @@ static int bnxt_set_coalesce(struct net_device *dev,
 
 #define BNXT_NUM_STATS 21
 
-#define BNXT_RX_STATS_OFFSET(counter)  \
-       (offsetof(struct rx_port_stats, counter) / 8)
-
 #define BNXT_RX_STATS_ENTRY(counter)   \
        { BNXT_RX_STATS_OFFSET(counter), __stringify(counter) }
 
-#define BNXT_TX_STATS_OFFSET(counter)                  \
-       ((offsetof(struct tx_port_stats, counter) +     \
-         sizeof(struct rx_port_stats) + 512) / 8)
-
 #define BNXT_TX_STATS_ENTRY(counter)   \
        { BNXT_TX_STATS_OFFSET(counter), __stringify(counter) }
 
@@ -150,6 +143,14 @@ static const struct {
        BNXT_RX_STATS_ENTRY(rx_tagged_frames),
        BNXT_RX_STATS_ENTRY(rx_double_tagged_frames),
        BNXT_RX_STATS_ENTRY(rx_good_frames),
+       BNXT_RX_STATS_ENTRY(rx_pfc_ena_frames_pri0),
+       BNXT_RX_STATS_ENTRY(rx_pfc_ena_frames_pri1),
+       BNXT_RX_STATS_ENTRY(rx_pfc_ena_frames_pri2),
+       BNXT_RX_STATS_ENTRY(rx_pfc_ena_frames_pri3),
+       BNXT_RX_STATS_ENTRY(rx_pfc_ena_frames_pri4),
+       BNXT_RX_STATS_ENTRY(rx_pfc_ena_frames_pri5),
+       BNXT_RX_STATS_ENTRY(rx_pfc_ena_frames_pri6),
+       BNXT_RX_STATS_ENTRY(rx_pfc_ena_frames_pri7),
        BNXT_RX_STATS_ENTRY(rx_undrsz_frames),
        BNXT_RX_STATS_ENTRY(rx_eee_lpi_events),
        BNXT_RX_STATS_ENTRY(rx_eee_lpi_duration),
@@ -179,6 +180,14 @@ static const struct {
        BNXT_TX_STATS_ENTRY(tx_fcs_err_frames),
        BNXT_TX_STATS_ENTRY(tx_err),
        BNXT_TX_STATS_ENTRY(tx_fifo_underruns),
+       BNXT_TX_STATS_ENTRY(tx_pfc_ena_frames_pri0),
+       BNXT_TX_STATS_ENTRY(tx_pfc_ena_frames_pri1),
+       BNXT_TX_STATS_ENTRY(tx_pfc_ena_frames_pri2),
+       BNXT_TX_STATS_ENTRY(tx_pfc_ena_frames_pri3),
+       BNXT_TX_STATS_ENTRY(tx_pfc_ena_frames_pri4),
+       BNXT_TX_STATS_ENTRY(tx_pfc_ena_frames_pri5),
+       BNXT_TX_STATS_ENTRY(tx_pfc_ena_frames_pri6),
+       BNXT_TX_STATS_ENTRY(tx_pfc_ena_frames_pri7),
        BNXT_TX_STATS_ENTRY(tx_eee_lpi_events),
        BNXT_TX_STATS_ENTRY(tx_eee_lpi_duration),
        BNXT_TX_STATS_ENTRY(tx_total_collisions),