1 /* $FreeBSD$ */ 2 3 /* 4 * Copyright (C) 2012 by Darren Reed. 5 * 6 * See the IPFILTER.LICENCE file for details on licencing. 7 * 8 * @(#)ip_frag.h 1.5 3/24/96 9 * $FreeBSD$ 10 * Id: ip_frag.h,v 2.23.2.1 2004/03/29 16:21:56 darrenr Exp 11 */ 12 13 #ifndef __IP_FRAG_H__ 14 #define __IP_FRAG_H__ 15 16 #define IPFT_SIZE 257 17 18 typedef struct ipfr { 19 struct ipfr *ipfr_hnext, **ipfr_hprev; 20 struct ipfr *ipfr_next, **ipfr_prev; 21 void *ipfr_data; 22 frentry_t *ipfr_rule; 23 u_long ipfr_ttl; 24 u_int ipfr_pkts; 25 u_int ipfr_bytes; 26 u_int ipfr_badorder; 27 int ipfr_ref; 28 u_short ipfr_off; 29 u_short ipfr_firstend; 30 u_char ipfr_p; 31 u_char ipfr_seen0; 32 /* 33 * All of the fields, from ipfr_ifp to ipfr_pass, are compared 34 * using bcmp to see if an identical entry is present. It is 35 * therefore important for this set to remain together. 36 */ 37 void *ipfr_ifp; 38 i6addr_t ipfr_source; 39 i6addr_t ipfr_dest; 40 u_32_t ipfr_optmsk; 41 u_short ipfr_secmsk; 42 u_short ipfr_auth; 43 u_32_t ipfr_id; 44 u_32_t ipfr_pass; 45 int ipfr_v; 46 } ipfr_t; 47 48 #define ipfr_src ipfr_source.in4 49 #define ipfr_dst ipfr_dest.in4 50 51 52 typedef struct ipfrstat { 53 u_long ifs_exists; /* add & already exists */ 54 u_long ifs_nomem; 55 u_long ifs_new; 56 u_long ifs_hits; 57 u_long ifs_expire; 58 u_long ifs_inuse; 59 u_long ifs_retrans0; 60 u_long ifs_short; 61 u_long ifs_bad; 62 u_long ifs_overlap; 63 u_long ifs_unordered; 64 u_long ifs_strict; 65 u_long ifs_miss; 66 u_long ifs_maximum; 67 u_long ifs_newbad; 68 u_long ifs_newrestrictnot0; 69 struct ipfr **ifs_table; 70 struct ipfr **ifs_nattab; 71 } ipfrstat_t; 72 73 typedef struct ipf_frag_softc_s { 74 ipfrwlock_t ipfr_ipidfrag; 75 ipfrwlock_t ipfr_frag; 76 ipfrwlock_t ipfr_natfrag; 77 int ipfr_size; 78 int ipfr_ttl; 79 int ipfr_lock; 80 int ipfr_inited; 81 ipftuneable_t *ipf_frag_tune; 82 ipfr_t *ipfr_list; 83 ipfr_t **ipfr_tail; 84 ipfr_t *ipfr_natlist; 85 ipfr_t **ipfr_nattail; 86 ipfr_t *ipfr_ipidlist; 87 ipfr_t **ipfr_ipidtail; 88 ipfr_t **ipfr_heads; 89 ipfr_t **ipfr_nattab; 90 ipfr_t **ipfr_ipidtab; 91 ipfrstat_t ipfr_stats; 92 } ipf_frag_softc_t; 93 94 #define IPFR_CMPSZ (offsetof(ipfr_t, ipfr_pass) - \ 95 offsetof(ipfr_t, ipfr_ifp)) 96 97 extern void *ipf_frag_soft_create(ipf_main_softc_t *); 98 extern int ipf_frag_soft_init(ipf_main_softc_t *, void *); 99 extern int ipf_frag_soft_fini(ipf_main_softc_t *, void *); 100 extern void ipf_frag_soft_destroy(ipf_main_softc_t *, void *); 101 extern int ipf_frag_main_load(void); 102 extern int ipf_frag_main_unload(void); 103 extern int ipf_frag_load(void); 104 extern void ipf_frag_clear(ipf_main_softc_t *); 105 extern void ipf_frag_expire(ipf_main_softc_t *); 106 extern void ipf_frag_forget(void *); 107 extern int ipf_frag_init(void); 108 extern u_32_t ipf_frag_ipidknown(fr_info_t *); 109 extern int ipf_frag_ipidnew(fr_info_t *, u_32_t); 110 extern frentry_t *ipf_frag_known(fr_info_t *, u_32_t *); 111 extern void ipf_frag_natforget(ipf_main_softc_t *, void *); 112 extern int ipf_frag_natnew(ipf_main_softc_t *, fr_info_t *, u_32_t, struct nat *); 113 extern nat_t *ipf_frag_natknown(fr_info_t *); 114 extern int ipf_frag_new(ipf_main_softc_t *, fr_info_t *, u_32_t); 115 extern ipfrstat_t *ipf_frag_stats(void *); 116 extern void ipf_frag_setlock(void *, int); 117 extern void ipf_frag_pkt_deref(ipf_main_softc_t *, void *); 118 extern int ipf_frag_pkt_next(ipf_main_softc_t *, ipftoken_t *, 119 ipfgeniter_t *); 120 extern void ipf_frag_nat_deref(ipf_main_softc_t *, void *); 121 extern int ipf_frag_nat_next(ipf_main_softc_t *, ipftoken_t *, 122 ipfgeniter_t *); 123 extern void ipf_slowtimer(ipf_main_softc_t *); 124 125 #endif /* __IP_FRAG_H__ */ 126