diff options
Diffstat (limited to 'framework/src/suricata/src/stream-tcp-sack.h')
-rw-r--r-- | framework/src/suricata/src/stream-tcp-sack.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/framework/src/suricata/src/stream-tcp-sack.h b/framework/src/suricata/src/stream-tcp-sack.h new file mode 100644 index 00000000..632fa14d --- /dev/null +++ b/framework/src/suricata/src/stream-tcp-sack.h @@ -0,0 +1,63 @@ +/* Copyright (C) 2007-2011 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> + */ + +#ifndef __STREAM_TCP_SACK_H__ +#define __STREAM_TCP_SACK_H__ + +#include "suricata-common.h" +#include "util-optimize.h" + +/** + * \brief Get the size of the SACKed ranges + * + * \param stream Stream to get the size for. + * + * \retval size the size + * + * Optimized for case where SACK is not in use in the + * stream, as it *should* only be used in case of packet + * loss. + */ +static inline uint32_t StreamTcpSackedSize(TcpStream *stream) +{ + if (likely(stream->sack_head == NULL)) { + SCReturnUInt(0U); + } else { + uint32_t size = 0; + + StreamTcpSackRecord *rec = NULL; + + for (rec = stream->sack_head; rec != NULL; rec = rec->next) { + size += (rec->re - rec->le); + } + + SCReturnUInt(size); + } +} + +int StreamTcpSackUpdatePacket(TcpStream *, Packet *); +void StreamTcpSackPruneList(TcpStream *); +void StreamTcpSackFreeList(TcpStream *); +void StreamTcpSackRegisterTests (void); + +#endif /* __STREAM_TCP_SACK_H__*/ |