1 2 /* 3 * Copyright (C) 2012 by Darren Reed. 4 * 5 * See the IPFILTER.LICENCE file for details on licencing. 6 * 7 * @(#)ip_frag.h 1.5 3/24/96 8 * Id: ip_frag.h,v 2.23.2.1 2004/03/29 16:21:56 darrenr Exp 9 */ 10 11 #ifndef __IP_FRAG_H__ 12 #define __IP_FRAG_H__ 13 14 #define IPFT_SIZE 257 15 16 typedef struct ipfr { 17 struct ipfr *ipfr_hnext, **ipfr_hprev; 18 struct ipfr *ipfr_next, **ipfr_prev; 19 void *ipfr_data; 20 frentry_t *ipfr_rule; 21 u_long ipfr_ttl; 22 u_int ipfr_pkts; 23 u_int ipfr_bytes; 24 u_int ipfr_badorder; 25 int ipfr_ref; 26 u_short ipfr_off; 27 u_short ipfr_firstend; 28 u_char ipfr_p; 29 u_char ipfr_seen0; 30 /* 31 * All of the fields, from ipfr_ifp to ipfr_pass, are compared 32 * using bcmp to see if an identical entry is present. It is 33 * therefore important for this set to remain together. 34 */ 35 void *ipfr_ifp; 36 i6addr_t ipfr_source; 37 i6addr_t ipfr_dest; 38 u_32_t ipfr_optmsk; 39 u_short ipfr_secmsk; 40 u_short ipfr_auth; 41 u_32_t ipfr_id; 42 u_32_t ipfr_pass; 43 int ipfr_v; 44 } ipfr_t; 45 46 #define ipfr_src ipfr_source.in4 47 #define ipfr_dst ipfr_dest.in4 48 49 50 typedef struct ipfrstat { 51 u_long ifs_exists; /* add & already exists */ 52 u_long ifs_nomem; 53 u_long ifs_new; 54 u_long ifs_hits; 55 u_long ifs_expire; 56 u_long ifs_inuse; 57 u_long ifs_retrans0; 58 u_long ifs_short; 59 u_long ifs_bad; 60 u_long ifs_overlap; 61 u_long ifs_unordered; 62 u_long ifs_strict; 63 u_long ifs_miss; 64 u_long ifs_maximum; 65 u_long ifs_newbad; 66 u_long ifs_newrestrictnot0; 67 struct ipfr **ifs_table; 68 struct ipfr **ifs_nattab; 69 } ipfrstat_t; 70 71 typedef struct ipf_frag_softc_s { 72 ipfrwlock_t ipfr_ipidfrag; 73 ipfrwlock_t ipfr_frag; 74 ipfrwlock_t ipfr_natfrag; 75 int ipfr_size; 76 int ipfr_ttl; 77 int ipfr_lock; 78 int ipfr_inited; 79 ipftuneable_t *ipf_frag_tune; 80 ipfr_t *ipfr_list; 81 ipfr_t **ipfr_tail; 82 ipfr_t *ipfr_natlist; 83 ipfr_t **ipfr_nattail; 84 ipfr_t *ipfr_ipidlist; 85 ipfr_t **ipfr_ipidtail; 86 ipfr_t **ipfr_heads; 87 ipfr_t **ipfr_nattab; 88 ipfr_t **ipfr_ipidtab; 89 ipfrstat_t ipfr_stats; 90 } ipf_frag_softc_t; 91 92 #define IPFR_CMPSZ (offsetof(ipfr_t, ipfr_pass) - \ 93 offsetof(ipfr_t, ipfr_ifp)) 94 95 extern void *ipf_frag_soft_create(ipf_main_softc_t *); 96 extern int ipf_frag_soft_init(ipf_main_softc_t *, void *); 97 extern int ipf_frag_soft_fini(ipf_main_softc_t *, void *); 98 extern void ipf_frag_soft_destroy(ipf_main_softc_t *, void *); 99 extern int ipf_frag_main_load(void); 100 extern int ipf_frag_main_unload(void); 101 extern int ipf_frag_load(void); 102 extern void ipf_frag_clear(ipf_main_softc_t *); 103 extern void ipf_frag_expire(ipf_main_softc_t *); 104 extern void ipf_frag_forget(void *); 105 extern int ipf_frag_init(void); 106 extern u_32_t ipf_frag_ipidknown(fr_info_t *); 107 extern int ipf_frag_ipidnew(fr_info_t *, u_32_t); 108 extern frentry_t *ipf_frag_known(fr_info_t *, u_32_t *); 109 extern void ipf_frag_natforget(ipf_main_softc_t *, void *); 110 extern int ipf_frag_natnew(ipf_main_softc_t *, fr_info_t *, u_32_t, struct nat *); 111 extern nat_t *ipf_frag_natknown(fr_info_t *); 112 extern int ipf_frag_new(ipf_main_softc_t *, fr_info_t *, u_32_t); 113 extern ipfrstat_t *ipf_frag_stats(void *); 114 extern void ipf_frag_setlock(void *, int); 115 extern void ipf_frag_pkt_deref(ipf_main_softc_t *, void *); 116 extern int ipf_frag_pkt_next(ipf_main_softc_t *, ipftoken_t *, 117 ipfgeniter_t *); 118 extern void ipf_frag_nat_deref(ipf_main_softc_t *, void *); 119 extern int ipf_frag_nat_next(ipf_main_softc_t *, ipftoken_t *, 120 ipfgeniter_t *); 121 extern void ipf_slowtimer(ipf_main_softc_t *); 122 123 #endif /* __IP_FRAG_H__ */ 124