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From: Sam Leffler <sam@FreeBSD.org>
To: Perforce Change Reviews <perforce@freebsd.org>
Cc: 
Subject: PERFORCE change 111432 for review
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http://perforce.freebsd.org/chv.cgi?CH=111432

Change 111432 by sam@sam_ebb on 2006/12/11 03:00:00

	err, it helps to lock this stuff

Affected files ...

.. //depot/projects/crypto/sys/dev/hifn/hifn7751.c#10 edit

Differences ...

==== //depot/projects/crypto/sys/dev/hifn/hifn7751.c#10 (text+ko) ====

@@ -2345,11 +2345,14 @@
 	if (sidp == NULL || cri == NULL || sc == NULL)
 		return (EINVAL);
 
+	HIFN_LOCK(sc);
 	if (sc->sc_sessions == NULL) {
 		ses = sc->sc_sessions = (struct hifn_session *)malloc(
 		    sizeof(*ses), M_DEVBUF, M_NOWAIT);
-		if (ses == NULL)
+		if (ses == NULL) {
+			HIFN_UNLOCK(sc);
 			return (ENOMEM);
+		}
 		sesn = 0;
 		sc->sc_nsessions = 1;
 	} else {
@@ -2364,8 +2367,10 @@
 			sesn = sc->sc_nsessions;
 			ses = (struct hifn_session *)malloc((sesn + 1) *
 			    sizeof(*ses), M_DEVBUF, M_NOWAIT);
-			if (ses == NULL)
+			if (ses == NULL) {
+				HIFN_UNLOCK(sc);
 				return (ENOMEM);
+			}
 			bcopy(sc->sc_sessions, ses, sesn * sizeof(*ses));
 			bzero(sc->sc_sessions, sesn * sizeof(*ses));
 			free(sc->sc_sessions, M_DEVBUF);
@@ -2374,6 +2379,8 @@
 			sc->sc_nsessions++;
 		}
 	}
+	HIFN_UNLOCK(sc);
+
 	bzero(ses, sizeof(*ses));
 	ses->hs_used = 1;
 
@@ -2434,19 +2441,23 @@
 hifn_freesession(device_t dev, u_int64_t tid)
 {
 	struct hifn_softc *sc = device_get_softc(dev);
-	int session;
+	int session, error;
 	u_int32_t sid = CRYPTO_SESID2LID(tid);
 
 	KASSERT(sc != NULL, ("hifn_freesession: null softc"));
 	if (sc == NULL)
 		return (EINVAL);
 
+	HIFN_LOCK(sc);
 	session = HIFN_SESSION(sid);
-	if (session >= sc->sc_nsessions)
-		return (EINVAL);
+	if (session < sc->sc_nsessions) {
+		bzero(&sc->sc_sessions[session], sizeof(struct hifn_session));
+		error = 0;
+	} else
+		error = EINVAL;
+	HIFN_UNLOCK(sc);
 
-	bzero(&sc->sc_sessions[session], sizeof(sc->sc_sessions[session]));
-	return (0);
+	return (error);
 }
 
 static int