cxgbe(4): if_iqdrops statistic should include tunnel congestion drops.

MFC after:	1 week

1 files changed, 15 insertions, 1 deletions

diff --git a/sys/dev/cxgbe/t4_main.c b/sys/dev/cxgbe/t4_main.c
index d399742..8641ad8 100644
--- a/sys/dev/cxgbe/t4_main.c
+++ b/sys/dev/cxgbe/t4_main.c
@@ -4085,6 +4085,7 @@ static void
 cxgbe_tick(void *arg)
 {
 	struct port_info *pi = arg;
+	struct adapter *sc = pi->adapter;
 	struct ifnet *ifp = pi->ifp;
 	struct sge_txq *txq;
 	int i, drops;
@@ -4096,7 +4097,7 @@ cxgbe_tick(void *arg)
 		return;	/* without scheduling another callout */
 	}
 
-	t4_get_port_stats(pi->adapter, pi->tx_chan, s);
+	t4_get_port_stats(sc, pi->tx_chan, s);
 
 	ifp->if_opackets = s->tx_frames - s->tx_pause;
 	ifp->if_ipackets = s->rx_frames - s->rx_pause;
@@ -4107,6 +4108,19 @@ cxgbe_tick(void *arg)
 	ifp->if_iqdrops = s->rx_ovflow0 + s->rx_ovflow1 + s->rx_ovflow2 +
 	    s->rx_ovflow3 + s->rx_trunc0 + s->rx_trunc1 + s->rx_trunc2 +
 	    s->rx_trunc3;
+	for (i = 0; i < 4; i++) {
+		if (pi->rx_chan_map & (1 << i)) {
+			uint32_t v;
+
+			/*
+			 * XXX: indirect reads from the same ADDR/DATA pair can
+			 * race with each other.
+			 */
+			t4_read_indirect(sc, A_TP_MIB_INDEX, A_TP_MIB_DATA, &v,
+			    1, A_TP_MIB_TNL_CNG_DROP_0 + i);
+			ifp->if_iqdrops += v;
+		}
+	}
 
 	drops = s->tx_drop;
 	for_each_txq(pi, i, txq)