23114797756

Committed 15 Mar 2026 04:48PM UTC coverage: 79.303% (-0.007%) from 79.31%

Build # 23114797756

Build Type

push

github

Committed by

jasonish

Commit Message

fixup

Coverage Stats

265901 of 335299 relevant lines covered (79.3%)

5138115.35 hits per line

Source File
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92.59

/src/defrag-timeout.c

/* Copyright (C) 2007-2012 Open Information Security Foundation
 *
 * You can copy, redistribute or modify this Program under the terms of
 * the GNU General Public License version 2 as published by the Free
 * Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * version 2 along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

/**
 * \file
 *
 * \author Victor Julien <victor@inliniac.net>
 */

#include "suricata-common.h"
#include "decode.h"
#include "defrag.h"
#include "defrag-hash.h"
#include "defrag-timeout.h"

/** \internal
 *  \brief See if we can really discard this tracker. Check use_cnt reference.
 *
 *  \param dt tracker
 *  \param ts timestamp
 *
 *  \retval 0 not timed out just yet
 *  \retval 1 fully timed out, lets kill it
 */
int DefragTrackerTimedOut(DefragTracker *dt, SCTime_t ts)
{
    /** never prune a trackers that is used by a packet
     *  we are currently processing in one of the threads */
    if (SC_ATOMIC_GET(dt->use_cnt) > 0) {
        return 0;
    }

    /* retain if remove is not set and not timed out */
    if (!dt->remove && SCTIME_CMP_GT(dt->timeout, ts))
        return 0;

    return 1;
}

/**
 *  \internal
 *
 *  \brief check all trackers in a hash row for timing out
 *
 *  \param hb tracker hash row *LOCKED*
 *  \param dt last tracker in the hash row
 *  \param ts timestamp
 *
 *  \retval cnt timed out tracker
 */
static uint32_t DefragTrackerHashRowTimeout(
        DefragTrackerHashRow *hb, DefragTracker *dt, SCTime_t ts)
{
    uint32_t cnt = 0;

    DefragTracker *prev_dt = NULL;
    do {
        if (SCMutexTrylock(&dt->lock) != 0) {
            prev_dt = dt;
            dt = dt->hnext;
            continue;
        }

        DefragTracker *next_dt = dt->hnext;

        /* check if the tracker is fully timed out and
         * ready to be discarded. */
        if (DefragTrackerTimedOut(dt, ts) == 0) {
            prev_dt = dt;
            SCMutexUnlock(&dt->lock);
            dt = next_dt;
            continue;
        }

        /* remove from the hash */
        if (prev_dt != NULL) {
            prev_dt->hnext = dt->hnext;
        } else {
            hb->head = dt->hnext;
        }

        dt->hnext = NULL;

        DefragTrackerClearMemory(dt);

        /* no one is referring to this tracker, use_cnt 0, removed from hash
         * so we can unlock it and move it back to the spare queue. */
        SCMutexUnlock(&dt->lock);

        /* move to spare list */
        DefragTrackerMoveToSpare(dt);

        cnt++;

        dt = next_dt;
    } while (dt != NULL);

    return cnt;
}

/**
 *  \brief time out tracker from the hash
 *
 *  \param ts timestamp
 *
 *  \retval cnt number of timed out tracker
 */
uint32_t DefragTimeoutHash(SCTime_t ts)
{
    uint32_t idx = 0;
    uint32_t cnt = 0;

    for (idx = 0; idx < defrag_config.hash_size; idx++) {
        DefragTrackerHashRow *hb = &defragtracker_hash[idx];

        if (DRLOCK_TRYLOCK(hb) != 0)
            continue;

        /* defrag hash bucket is now locked */

        if (hb->head == NULL) {
            DRLOCK_UNLOCK(hb);
            continue;
        }

        /* we have a tracker, or more than one */
        cnt += DefragTrackerHashRowTimeout(hb, hb->head, ts);
        DRLOCK_UNLOCK(hb);
    }

    return cnt;
}


1	/* Copyright (C) 2007-2012 Open Information Security Foundation
2	*
3	* You can copy, redistribute or modify this Program under the terms of
4	* the GNU General Public License version 2 as published by the Free
5	* Software Foundation.
6	*
7	* This program is distributed in the hope that it will be useful,
8	* but WITHOUT ANY WARRANTY; without even the implied warranty of
9	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10	* GNU General Public License for more details.
11	*
12	* You should have received a copy of the GNU General Public License
13	* version 2 along with this program; if not, write to the Free Software
14	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
15	* 02110-1301, USA.
16	*/
17
18	/**
19	* \file
20	*
21	* \author Victor Julien <victor@inliniac.net>
22	*/
23
24	#include "suricata-common.h"
25	#include "decode.h"
26	#include "defrag.h"
27	#include "defrag-hash.h"
28	#include "defrag-timeout.h"
29
30	/** \internal
31	* \brief See if we can really discard this tracker. Check use_cnt reference.
32	*
33	* \param dt tracker
34	* \param ts timestamp
35	*
36	* \retval 0 not timed out just yet
37	* \retval 1 fully timed out, lets kill it
38	*/
39	int DefragTrackerTimedOut(DefragTracker *dt, SCTime_t ts)
40	{	1,429,366✔
41	/** never prune a trackers that is used by a packet
42	* we are currently processing in one of the threads */
43	if (SC_ATOMIC_GET(dt->use_cnt) > 0) {	1,429,366✔
44	return 0;	×
45	}	×
46
47	/* retain if remove is not set and not timed out */
48	if (!dt->remove && SCTIME_CMP_GT(dt->timeout, ts))	1,429,366✔
49	return 0;	1,385,454✔
50
51	return 1;	43,912✔
52	}	1,429,366✔
53
54	/**
55	* \internal
56	*
57	* \brief check all trackers in a hash row for timing out
58	*
59	* \param hb tracker hash row LOCKED
60	* \param dt last tracker in the hash row
61	* \param ts timestamp
62	*
63	* \retval cnt timed out tracker
64	*/
65	static uint32_t DefragTrackerHashRowTimeout(
66	DefragTrackerHashRow hb, DefragTracker dt, SCTime_t ts)
67	{	1,139✔
68	uint32_t cnt = 0;	1,139✔
69
70	DefragTracker *prev_dt = NULL;	1,139✔
71	do {	1,147✔
72	if (SCMutexTrylock(&dt->lock) != 0) {	1,147✔
73	prev_dt = dt;	1✔
74	dt = dt->hnext;	1✔
75	continue;	1✔
76	}	1✔
77
78	DefragTracker *next_dt = dt->hnext;	1,146✔
79
80	/* check if the tracker is fully timed out and
81	* ready to be discarded. */
82	if (DefragTrackerTimedOut(dt, ts) == 0) {	1,146✔
83	prev_dt = dt;	1,081✔
84	SCMutexUnlock(&dt->lock);	1,081✔
85	dt = next_dt;	1,081✔
86	continue;	1,081✔
87	}	1,081✔
88
89	/* remove from the hash */
90	if (prev_dt != NULL) {	65✔
91	prev_dt->hnext = dt->hnext;	×
92	} else {	65✔
93	hb->head = dt->hnext;	65✔
94	}	65✔
95
96	dt->hnext = NULL;	65✔
97
98	DefragTrackerClearMemory(dt);	65✔
99
100	/* no one is referring to this tracker, use_cnt 0, removed from hash
101	* so we can unlock it and move it back to the spare queue. */
102	SCMutexUnlock(&dt->lock);	65✔
103
104	/* move to spare list */
105	DefragTrackerMoveToSpare(dt);	65✔
106
107	cnt++;	65✔
108
109	dt = next_dt;	65✔
110	} while (dt != NULL);	1,147✔
111
112	return cnt;	481✔
113	}	1,139✔
114
115	/**
116	* \brief time out tracker from the hash
117	*
118	* \param ts timestamp
119	*
120	* \retval cnt number of timed out tracker
121	*/
122	uint32_t DefragTimeoutHash(SCTime_t ts)
123	{	5,287✔
124	uint32_t idx = 0;	5,287✔
125	uint32_t cnt = 0;	5,287✔
126
127	for (idx = 0; idx < defrag_config.hash_size; idx++) {	267,789,479✔
128	DefragTrackerHashRow *hb = &defragtracker_hash[idx];	267,784,192✔
129
130	if (DRLOCK_TRYLOCK(hb) != 0)	267,784,192✔
131	continue;	×
132
133	/* defrag hash bucket is now locked */
134
135	if (hb->head == NULL) {	267,784,192✔
136	DRLOCK_UNLOCK(hb);	267,783,053✔
137	continue;	267,783,053✔
138	}	267,783,053✔
139
140	/* we have a tracker, or more than one */
141	cnt += DefragTrackerHashRowTimeout(hb, hb->head, ts);	1,139✔
142	DRLOCK_UNLOCK(hb);	1,139✔
143	}	1,139✔
144
145	return cnt;	5,287✔
146	}	5,287✔
147

jasonish / suricata / 23114797756

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