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author | Ashlee Young <ashlee@onosfw.com> | 2015-09-09 22:21:41 -0700 |
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committer | Ashlee Young <ashlee@onosfw.com> | 2015-09-09 22:21:41 -0700 |
commit | 8879b125d26e8db1a5633de5a9c692eb2d1c4f83 (patch) | |
tree | c7259d85a991b83dfa85ab2e339360669fc1f58e /framework/src/suricata/src/ippair-queue.c | |
parent | 13d05bc8458758ee39cb829098241e89616717ee (diff) |
suricata checkin based on commit id a4bce14770beee46a537eda3c3f6e8e8565d5d0a
Change-Id: I9a214fa0ee95e58fc640e50bd604dac7f42db48f
Diffstat (limited to 'framework/src/suricata/src/ippair-queue.c')
-rw-r--r-- | framework/src/suricata/src/ippair-queue.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/framework/src/suricata/src/ippair-queue.c b/framework/src/suricata/src/ippair-queue.c new file mode 100644 index 00000000..0f68200d --- /dev/null +++ b/framework/src/suricata/src/ippair-queue.c @@ -0,0 +1,143 @@ +/* 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> + * + * IPPair queue handler functions + */ + +#include "suricata-common.h" +#include "threads.h" +#include "debug.h" +#include "ippair-queue.h" +#include "util-error.h" +#include "util-debug.h" +#include "util-print.h" + +IPPairQueue *IPPairQueueInit (IPPairQueue *q) +{ + if (q != NULL) { + memset(q, 0, sizeof(IPPairQueue)); + HQLOCK_INIT(q); + } + return q; +} + +IPPairQueue *IPPairQueueNew() +{ + IPPairQueue *q = (IPPairQueue *)SCMalloc(sizeof(IPPairQueue)); + if (q == NULL) { + SCLogError(SC_ERR_FATAL, "Fatal error encountered in IPPairQueueNew. Exiting..."); + exit(EXIT_SUCCESS); + } + q = IPPairQueueInit(q); + return q; +} + +/** + * \brief Destroy a ippair queue + * + * \param q the ippair queue to destroy + */ +void IPPairQueueDestroy (IPPairQueue *q) +{ + HQLOCK_DESTROY(q); +} + +/** + * \brief add a ippair to a queue + * + * \param q queue + * \param h ippair + */ +void IPPairEnqueue (IPPairQueue *q, IPPair *h) +{ +#ifdef DEBUG + BUG_ON(q == NULL || h == NULL); +#endif + + HQLOCK_LOCK(q); + + /* more ippairs in queue */ + if (q->top != NULL) { + h->lnext = q->top; + q->top->lprev = h; + q->top = h; + /* only ippair */ + } else { + q->top = h; + q->bot = h; + } + q->len++; +#ifdef DBG_PERF + if (q->len > q->dbg_maxlen) + q->dbg_maxlen = q->len; +#endif /* DBG_PERF */ + HQLOCK_UNLOCK(q); +} + +/** + * \brief remove a ippair from the queue + * + * \param q queue + * + * \retval h ippair or NULL if empty list. + */ +IPPair *IPPairDequeue (IPPairQueue *q) +{ + HQLOCK_LOCK(q); + + IPPair *h = q->bot; + if (h == NULL) { + HQLOCK_UNLOCK(q); + return NULL; + } + + /* more packets in queue */ + if (q->bot->lprev != NULL) { + q->bot = q->bot->lprev; + q->bot->lnext = NULL; + /* just the one we remove, so now empty */ + } else { + q->top = NULL; + q->bot = NULL; + } + +#ifdef DEBUG + BUG_ON(q->len == 0); +#endif + if (q->len > 0) + q->len--; + + h->lnext = NULL; + h->lprev = NULL; + + HQLOCK_UNLOCK(q); + return h; +} + +uint32_t IPPairQueueLen(IPPairQueue *q) +{ + uint32_t len; + HQLOCK_LOCK(q); + len = q->len; + HQLOCK_UNLOCK(q); + return len; +} |