From 976d7cecd5213021cd0b730b113d3fcd107c13ab Mon Sep 17 00:00:00 2001
From: Gleb Smirnoff <glebius@FreeBSD.org>
Date: Thu, 23 Jan 2020 16:36:58 +0000
Subject: [PATCH] With MSI interrupts bge(4) just schedules taskqueue.  Enter
 the network epoch in the taskqueue handler.

Reported by:	kib
---
 sys/dev/bge/if_bge.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sys/dev/bge/if_bge.c b/sys/dev/bge/if_bge.c
index 6199478c4b2..fab4c1bb4bb 100644
--- a/sys/dev/bge/if_bge.c
+++ b/sys/dev/bge/if_bge.c
@@ -4646,6 +4646,7 @@ bge_msi_intr(void *arg)
 static void
 bge_intr_task(void *arg, int pending)
 {
+	struct epoch_tracker et;
 	struct bge_softc *sc;
 	if_t ifp;
 	uint32_t status, status_tag;
@@ -4688,7 +4689,9 @@ bge_intr_task(void *arg, int pending)
 	    sc->bge_rx_saved_considx != rx_prod) {
 		/* Check RX return ring producer/consumer. */
 		BGE_UNLOCK(sc);
+		NET_EPOCH_ENTER(et);
 		bge_rxeof(sc, rx_prod, 0);
+		NET_EPOCH_EXIT(et);
 		BGE_LOCK(sc);
 	}
 	if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) {