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From: "Andrey V. Elsukov" <ae@FreeBSD.org>
Date: Sun, 21 Oct 2018 18:30:27 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r339555 - head/sys/net
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Author: ae
Date: Sun Oct 21 18:30:27 2018
New Revision: 339555
URL: https://svnweb.freebsd.org/changeset/base/339555

Log:
  Follow the fix in r339532 (by glebius):
    Fix exiting an epoch(9) we never entered. May happen only with MAC.
  
  MFC after:	1 month

Modified:
  head/sys/net/if_ipsec.c

Modified: head/sys/net/if_ipsec.c
==============================================================================
--- head/sys/net/if_ipsec.c	Sun Oct 21 18:24:20 2018	(r339554)
+++ head/sys/net/if_ipsec.c	Sun Oct 21 18:30:27 2018	(r339555)
@@ -323,6 +323,7 @@ ipsec_transmit(struct ifnet *ifp, struct mbuf *m)
 	uint32_t af;
 	int error;
 
+	IPSEC_RLOCK();
 #ifdef MAC
 	error = mac_ifnet_check_transmit(ifp, m);
 	if (error) {
@@ -331,7 +332,6 @@ ipsec_transmit(struct ifnet *ifp, struct mbuf *m)
 	}
 #endif
 	error = ENETDOWN;
-	IPSEC_RLOCK();
 	sc = ifp->if_softc;
 	if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
 	    (ifp->if_flags & IFF_MONITOR) != 0 ||