From 8222d237cba35e6c64d4e5016202e4b54d5fb93b Mon Sep 17 00:00:00 2001
From: Kip Macy <kmacy@FreeBSD.org>
Date: Thu, 14 May 2009 03:33:04 +0000
Subject: [PATCH] Call drbr_stats_update to update ifp stats directly when we
 bypass the buf_ring on transmit

---
 sys/dev/e1000/if_em.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/sys/dev/e1000/if_em.c b/sys/dev/e1000/if_em.c
index cf13fbbc465a..0883018c84d2 100644
--- a/sys/dev/e1000/if_em.c
+++ b/sys/dev/e1000/if_em.c
@@ -1006,14 +1006,17 @@ em_transmit_locked(struct ifnet *ifp, struct mbuf *m)
 	    || (!adapter->link_active)) {
 		error = drbr_enqueue(ifp, adapter->br, m);
 		return (error);
-	}
-	
-	if (ADAPTER_RING_EMPTY(adapter) &&
+	} else if (ADAPTER_RING_EMPTY(adapter) &&
 	    (adapter->num_tx_desc_avail > EM_TX_OP_THRESHOLD)) {
 		if (em_xmit(adapter, &m)) {
 			if (m && (error = drbr_enqueue(ifp, adapter->br, m)) != 0)
 				return (error);
 		} else {
+			/*
+			 * We've bypassed the buf ring so we need to update
+			 * ifp directly
+			 */
+			drbr_stats_update(ifp, m->m_pkthdr.len, m->m_flags);
 			/*
 			** Send a copy of the frame to the BPF
 			** listener and set the watchdog on.