bnxt_en: Support TPA counters on 57500 chips.

Support the new expanded TPA v2 counters on 57500 B0 chips for
ethtool -S.

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_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index a3a7bec..3a3d8a9 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -163,6 +163,14 @@ static const char * const bnxt_ring_tpa_stats_str[] = {
        "tpa_aborts",
 };
 
+static const char * const bnxt_ring_tpa2_stats_str[] = {
+       "rx_tpa_eligible_pkt",
+       "rx_tpa_eligible_bytes",
+       "rx_tpa_pkt",
+       "rx_tpa_bytes",
+       "rx_tpa_errors",
+};
+
 static const char * const bnxt_ring_sw_stats_str[] = {
        "rx_l4_csum_errors",
        "missed_irqs",
@@ -461,14 +469,23 @@ static const struct {
         ARRAY_SIZE(bnxt_tx_pkts_pri_arr))
 #define BNXT_NUM_PCIE_STATS ARRAY_SIZE(bnxt_pcie_stats_arr)
 
+static int bnxt_get_num_tpa_ring_stats(struct bnxt *bp)
+{
+       if (BNXT_SUPPORTS_TPA(bp)) {
+               if (bp->max_tpa_v2)
+                       return ARRAY_SIZE(bnxt_ring_tpa2_stats_str);
+               return ARRAY_SIZE(bnxt_ring_tpa_stats_str);
+       }
+       return 0;
+}
+
 static int bnxt_get_num_ring_stats(struct bnxt *bp)
 {
        int num_stats;
 
        num_stats = ARRAY_SIZE(bnxt_ring_stats_str) +
-                   ARRAY_SIZE(bnxt_ring_sw_stats_str);
-       if (BNXT_SUPPORTS_TPA(bp))
-               num_stats += ARRAY_SIZE(bnxt_ring_tpa_stats_str);
+                   ARRAY_SIZE(bnxt_ring_sw_stats_str) +
+                   bnxt_get_num_tpa_ring_stats(bp);
        return num_stats * bp->cp_nr_rings;
 }
 
@@ -515,10 +532,8 @@ static void bnxt_get_ethtool_stats(struct net_device *dev,
 {
        u32 i, j = 0;
        struct bnxt *bp = netdev_priv(dev);
-       u32 stat_fields = ARRAY_SIZE(bnxt_ring_stats_str);
-
-       if (BNXT_SUPPORTS_TPA(bp))
-               stat_fields += ARRAY_SIZE(bnxt_ring_tpa_stats_str);
+       u32 stat_fields = ARRAY_SIZE(bnxt_ring_stats_str) +
+                         bnxt_get_num_tpa_ring_stats(bp);
 
        if (!bp->bnapi) {
                j += bnxt_get_num_ring_stats(bp) + BNXT_NUM_SW_FUNC_STATS;
@@ -609,6 +624,7 @@ skip_ring_stats:
 static void bnxt_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
 {
        struct bnxt *bp = netdev_priv(dev);
+       static const char * const *str;
        u32 i, j, num_str;
 
        switch (stringset) {
@@ -623,10 +639,15 @@ static void bnxt_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
                        if (!BNXT_SUPPORTS_TPA(bp))
                                goto skip_tpa_stats;
 
-                       num_str = ARRAY_SIZE(bnxt_ring_tpa_stats_str);
+                       if (bp->max_tpa_v2) {
+                               num_str = ARRAY_SIZE(bnxt_ring_tpa2_stats_str);
+                               str = bnxt_ring_tpa2_stats_str;
+                       } else {
+                               num_str = ARRAY_SIZE(bnxt_ring_tpa_stats_str);
+                               str = bnxt_ring_tpa_stats_str;
+                       }
                        for (j = 0; j < num_str; j++) {
-                               sprintf(buf, "[%d]: %s", i,
-                                       bnxt_ring_tpa_stats_str[j]);
+                               sprintf(buf, "[%d]: %s", i, str[j]);
                                buf += ETH_GSTRING_LEN;
                        }
 skip_tpa_stats: