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Diffstat (limited to 'framework/src/suricata/src/defrag.h')
| -rw-r--r-- | framework/src/suricata/src/defrag.h | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/framework/src/suricata/src/defrag.h b/framework/src/suricata/src/defrag.h deleted file mode 100644 index 2dfaec60..00000000 --- a/framework/src/suricata/src/defrag.h +++ /dev/null @@ -1,125 +0,0 @@ -/* Copyright (C) 2007-2013 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 Endace Technology Limited, Jason Ish <jason.ish@endace.com> - */ - -#ifndef __DEFRAG_H__ -#define __DEFRAG_H__ - -#include "util-pool.h" - -/** - * A context for an instance of a fragmentation re-assembler, in case - * we ever need more than one. - */ -typedef struct DefragContext_ { - Pool *frag_pool; /**< Pool of fragments. */ - SCMutex frag_pool_lock; - - time_t timeout; /**< Default timeout. */ -} DefragContext; - -/** - * Storage for an individual fragment. - */ -typedef struct Frag_ { - uint16_t offset; /**< The offset of this fragment, already - * multiplied by 8. */ - - uint16_t len; /**< The length of this fragment. */ - - uint8_t hlen; /**< The length of this fragments IP header. */ - - uint8_t more_frags:4; /**< More frags? */ - uint8_t skip:4; /**< Skip this fragment during re-assembly. */ - - uint16_t ip_hdr_offset; /**< Offset in the packet where the IP - * header starts. */ - uint16_t frag_hdr_offset; /**< Offset in the packet where the frag - * header starts. */ - - uint16_t data_offset; /**< Offset to the packet data. */ - uint16_t data_len; /**< Length of data. */ - - uint16_t ltrim; /**< Number of leading bytes to trim when - * re-assembling the packet. */ - - uint8_t *pkt; /**< The actual packet. */ - -#ifdef DEBUG - uint64_t pcap_cnt; /**< pcap_cnt of original packet */ -#endif - - TAILQ_ENTRY(Frag_) next; /**< Pointer to next fragment for tailq. */ -} Frag; - -/** - * A defragmentation tracker. Used to track fragments that make up a - * single packet. - */ -typedef struct DefragTracker_ { - SCMutex lock; /**< Mutex for locking list operations on - * this tracker. */ - - uint16_t vlan_id[2]; /**< VLAN ID tracker applies to. */ - - uint32_t id; /**< IP ID for this tracker. 32 bits for IPv6, 16 - * for IPv4. */ - - uint8_t policy; /**< Reassembly policy this tracker will use. */ - - uint8_t af; /**< Address family for this tracker, AF_INET or - * AF_INET6. */ - - uint8_t seen_last; /**< Has this tracker seen the last fragment? */ - - uint8_t remove; /**< remove */ - - Address src_addr; /**< Source address for this tracker. */ - Address dst_addr; /**< Destination address for this tracker. */ - - struct timeval timeout; /**< When this tracker will timeout. */ - uint32_t host_timeout; /**< Host timeout, statically assigned from the yaml */ - - /** use cnt, reference counter */ - SC_ATOMIC_DECLARE(unsigned int, use_cnt); - - TAILQ_HEAD(frag_tailq, Frag_) frags; /**< Head of list of fragments. */ - - /** hash pointers, protected by hash row mutex/spin */ - struct DefragTracker_ *hnext; - struct DefragTracker_ *hprev; - - /** list pointers, protected by tracker-queue mutex/spin */ - struct DefragTracker_ *lnext; - struct DefragTracker_ *lprev; -} DefragTracker; - -void DefragInit(void); -void DefragDestroy(void); -void DefragReload(void); /**< use only in unittests */ - -uint8_t DefragGetOsPolicy(Packet *); -void DefragTrackerFreeFrags(DefragTracker *); -Packet *Defrag(ThreadVars *, DecodeThreadVars *, Packet *, PacketQueue *); -void DefragRegisterTests(void); - -#endif /* __DEFRAG_H__ */ |