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Sessions in-use are at the end of the queue, so use TAILQ_FOREACH_REVERSE()

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when looking for them.

Idea from:	Patrick Lamaiziere <patfbsd@davenulle.org>
This commit is contained in:
pjd 2008-08-09 19:42:37 +00:00
parent 7629f55290
commit 1be547932b
1 changed files with 5 additions and 3 deletions
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8
sys/crypto/via/padlock.c
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@ -59,7 +59,7 @@ __FBSDID("$FreeBSD$");
struct padlock_softc {
int32_t sc_cid;
uint32_t sc_sid;
TAILQ_HEAD(, padlock_session) sc_sessions;
TAILQ_HEAD(padlock_sessions_head, padlock_session) sc_sessions;
struct rwlock sc_sessions_lock;
};
@ -259,7 +259,8 @@ padlock_freesession(device_t dev, uint64_t tid)
uint32_t sid = ((uint32_t)tid) & 0xffffffff;
rw_wlock(&sc->sc_sessions_lock);
TAILQ_FOREACH(ses, &sc->sc_sessions, ses_next) {
TAILQ_FOREACH_REVERSE(ses, &sc->sc_sessions, padlock_sessions_head,
ses_next) {
if (ses->ses_id == sid)
break;
}
@ -323,7 +324,8 @@ padlock_process(device_t dev, struct cryptop *crp, int hint __unused)
}
rw_rlock(&sc->sc_sessions_lock);
TAILQ_FOREACH(ses, &sc->sc_sessions, ses_next) {
TAILQ_FOREACH_REVERSE(ses, &sc->sc_sessions, padlock_sessions_head,
ses_next) {
if (ses->ses_id == (crp->crp_sid & 0xffffffff))
break;
}