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dn_aqm.h
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dn_aqm_codel.c
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dn_aqm_codel.h
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dn_aqm_pie.c
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dn_aqm_pie.h
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dn_heap.c
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dn_heap.h
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dn_sched.h
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dn_sched_fifo.c
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dn_sched_fq_codel.c
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dn_sched_fq_codel.h
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dn_sched_fq_codel_helper.h
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dn_sched_fq_pie.c
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dn_sched_prio.c
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dn_sched_qfq.c
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dn_sched_rr.c
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dn_sched_wf2q.c
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dummynet.txt
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ip_dn_glue.c
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ip_dn_io.c
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ip_dn_private.h
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ip_dummynet.c
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ip_fw2.c
(91.86 KB)
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ip_fw_bpf.c
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ip_fw_dynamic.c
(92.69 KB)
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ip_fw_eaction.c
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ip_fw_iface.c
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ip_fw_log.c
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ip_fw_nat.c
(30.48 KB)
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ip_fw_pfil.c
(16.22 KB)
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ip_fw_private.h
(28.14 KB)
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ip_fw_sockopt.c
(106.54 KB)
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ip_fw_table.c
(76.58 KB)
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ip_fw_table.h
(8.91 KB)
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ip_fw_table_algo.c
(93.66 KB)
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ip_fw_table_value.c
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nat64
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nptv6
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pmod
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test
Editing: ip_fw_private.h
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2002-2009 Luigi Rizzo, Universita` di Pisa * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ #ifndef _IPFW2_PRIVATE_H #define _IPFW2_PRIVATE_H /* * Internal constants and data structures used by ipfw components * and not meant to be exported outside the kernel. */ #ifdef _KERNEL /* * For platforms that do not have SYSCTL support, we wrap the * SYSCTL_* into a function (one per file) to collect the values * into an array at module initialization. The wrapping macros, * SYSBEGIN() and SYSEND, are empty in the default case. */ #ifndef SYSBEGIN #define SYSBEGIN(x) #endif #ifndef SYSEND #define SYSEND #endif /* Return values from ipfw_chk() */ enum { IP_FW_PASS = 0, IP_FW_DENY, IP_FW_DIVERT, IP_FW_TEE, IP_FW_DUMMYNET, IP_FW_NETGRAPH, IP_FW_NGTEE, IP_FW_NAT, IP_FW_REASS, IP_FW_NAT64, }; /* * Structure for collecting parameters to dummynet for ip6_output forwarding */ struct _ip6dn_args { struct ip6_pktopts *opt_or; int flags_or; struct ip6_moptions *im6o_or; struct ifnet *origifp_or; struct ifnet *ifp_or; struct sockaddr_in6 dst_or; u_long mtu_or; }; /* * Arguments for calling ipfw_chk() and dummynet_io(). We put them * all into a structure because this way it is easier and more * efficient to pass variables around and extend the interface. */ struct ip_fw_args { uint32_t flags; #define IPFW_ARGS_ETHER 0x00010000 /* valid ethernet header */ #define IPFW_ARGS_NH4 0x00020000 /* IPv4 next hop in hopstore */ #define IPFW_ARGS_NH6 0x00040000 /* IPv6 next hop in hopstore */ #define IPFW_ARGS_NH4PTR 0x00080000 /* IPv4 next hop in next_hop */ #define IPFW_ARGS_NH6PTR 0x00100000 /* IPv6 next hop in next_hop6 */ #define IPFW_ARGS_REF 0x00200000 /* valid ipfw_rule_ref */ #define IPFW_ARGS_IN 0x00400000 /* called on input */ #define IPFW_ARGS_OUT 0x00800000 /* called on output */ #define IPFW_ARGS_IP4 0x01000000 /* belongs to v4 ISR */ #define IPFW_ARGS_IP6 0x02000000 /* belongs to v6 ISR */ #define IPFW_ARGS_DROP 0x04000000 /* drop it (dummynet) */ #define IPFW_ARGS_LENMASK 0x0000ffff /* length of data in *mem */ #define IPFW_ARGS_LENGTH(f) ((f) & IPFW_ARGS_LENMASK) /* * On return, it points to the matching rule. * On entry, rule.slot > 0 means the info is valid and * contains the starting rule for an ipfw search. * If chain_id == chain->id && slot >0 then jump to that slot. * Otherwise, we locate the first rule >= rulenum:rule_id */ struct ipfw_rule_ref rule; /* match/restart info */ struct ifnet *ifp; /* input/output interface */ struct inpcb *inp; union { /* * next_hop[6] pointers can be used to point to next hop * stored in rule's opcode to avoid copying into hopstore. * Also, it is expected that all 0x1-0x10 flags are mutually * exclusive. */ struct sockaddr_in *next_hop; struct sockaddr_in6 *next_hop6; /* ipfw next hop storage */ struct sockaddr_in hopstore; struct ip_fw_nh6 { struct in6_addr sin6_addr; uint32_t sin6_scope_id; uint16_t sin6_port; } hopstore6; }; union { struct mbuf *m; /* the mbuf chain */ void *mem; /* or memory pointer */ }; struct ipfw_flow_id f_id; /* grabbed from IP header */ }; MALLOC_DECLARE(M_IPFW); /* wrapper for freeing a packet, in case we need to do more work */ #ifndef FREE_PKT #if defined(__linux__) || defined(_WIN32) #define FREE_PKT(m) netisr_dispatch(-1, m) #else #define FREE_PKT(m) m_freem(m) #endif #endif /* !FREE_PKT */ /* * Function definitions. */ int ipfw_chk(struct ip_fw_args *args); struct mbuf *ipfw_send_pkt(struct mbuf *, struct ipfw_flow_id *, u_int32_t, u_int32_t, int); int ipfw_attach_hooks(void); void ipfw_detach_hooks(void); #ifdef NOTYET void ipfw_nat_destroy(void); #endif /* In ip_fw_log.c */ struct ip; struct ip_fw_chain; void ipfw_bpf_init(int); void ipfw_bpf_uninit(int); void ipfw_bpf_tap(u_char *, u_int); void ipfw_bpf_mtap(struct mbuf *); void ipfw_bpf_mtap2(void *, u_int, struct mbuf *); void ipfw_log(struct ip_fw_chain *chain, struct ip_fw *f, u_int hlen, struct ip_fw_args *args, u_short offset, uint32_t tablearg, struct ip *ip); VNET_DECLARE(u_int64_t, norule_counter); #define V_norule_counter VNET(norule_counter) VNET_DECLARE(int, verbose_limit); #define V_verbose_limit VNET(verbose_limit) /* In ip_fw_dynamic.c */ struct sockopt_data; enum { /* result for matching dynamic rules */ MATCH_REVERSE = 0, MATCH_FORWARD, MATCH_NONE, MATCH_UNKNOWN, }; /* * Macro to determine that we need to do or redo dynamic state lookup. * direction == MATCH_UNKNOWN means that this is first lookup, then we need * to do lookup. * Otherwise check the state name, if previous lookup was for "any" name, * this means there is no state with specific name. Thus no need to do * lookup. If previous name was not "any", redo lookup for specific name. */ #define DYN_LOOKUP_NEEDED(p, cmd) \ ((p)->direction == MATCH_UNKNOWN || \ ((p)->kidx != 0 && (p)->kidx != (cmd)->arg1)) #define DYN_INFO_INIT(p) do { \ (p)->direction = MATCH_UNKNOWN; \ (p)->kidx = 0; \ } while (0) struct ipfw_dyn_info { uint16_t direction; /* match direction */ uint16_t kidx; /* state name kidx */ uint32_t hashval; /* hash value */ uint32_t version; /* bucket version */ uint32_t f_pos; }; int ipfw_dyn_install_state(struct ip_fw_chain *chain, struct ip_fw *rule, const ipfw_insn_limit *cmd, const struct ip_fw_args *args, const void *ulp, int pktlen, struct ipfw_dyn_info *info, uint32_t tablearg); struct ip_fw *ipfw_dyn_lookup_state(const struct ip_fw_args *args, const void *ulp, int pktlen, const ipfw_insn *cmd, struct ipfw_dyn_info *info); int ipfw_is_dyn_rule(struct ip_fw *rule); void ipfw_expire_dyn_states(struct ip_fw_chain *, ipfw_range_tlv *); void ipfw_get_dynamic(struct ip_fw_chain *chain, char **bp, const char *ep); int ipfw_dump_states(struct ip_fw_chain *chain, struct sockopt_data *sd); void ipfw_dyn_init(struct ip_fw_chain *); /* per-vnet initialization */ void ipfw_dyn_uninit(int); /* per-vnet deinitialization */ int ipfw_dyn_len(void); uint32_t ipfw_dyn_get_count(uint32_t *, int *); void ipfw_dyn_reset_eaction(struct ip_fw_chain *ch, uint16_t eaction_id, uint16_t default_id, uint16_t instance_id); /* common variables */ VNET_DECLARE(int, fw_one_pass); #define V_fw_one_pass VNET(fw_one_pass) VNET_DECLARE(int, fw_verbose); #define V_fw_verbose VNET(fw_verbose) VNET_DECLARE(struct ip_fw_chain, layer3_chain); #define V_layer3_chain VNET(layer3_chain) VNET_DECLARE(int, ipfw_vnet_ready); #define V_ipfw_vnet_ready VNET(ipfw_vnet_ready) VNET_DECLARE(u_int32_t, set_disable); #define V_set_disable VNET(set_disable) VNET_DECLARE(int, autoinc_step); #define V_autoinc_step VNET(autoinc_step) VNET_DECLARE(unsigned int, fw_tables_max); #define V_fw_tables_max VNET(fw_tables_max) VNET_DECLARE(unsigned int, fw_tables_sets); #define V_fw_tables_sets VNET(fw_tables_sets) struct tables_config; #ifdef _KERNEL /* * Here we have the structure representing an ipfw rule. * * It starts with a general area * followed by an array of one or more instructions, which the code * accesses as an array of 32-bit values. * * Given a rule pointer r: * * r->cmd is the start of the first instruction. * ACTION_PTR(r) is the start of the first action (things to do * once a rule matched). */ struct ip_fw { uint16_t act_ofs; /* offset of action in 32-bit units */ uint16_t cmd_len; /* # of 32-bit words in cmd */ uint16_t rulenum; /* rule number */ uint8_t set; /* rule set (0..31) */ uint8_t flags; /* currently unused */ counter_u64_t cntr; /* Pointer to rule counters */ uint32_t timestamp; /* tv_sec of last match */ uint32_t id; /* rule id */ uint32_t cached_id; /* used by jump_fast */ uint32_t cached_pos; /* used by jump_fast */ uint32_t refcnt; /* number of references */ struct ip_fw *next; /* linked list of deleted rules */ ipfw_insn cmd[1]; /* storage for commands */ }; #define IPFW_RULE_CNTR_SIZE (2 * sizeof(uint64_t)) #endif struct ip_fw_chain { struct ip_fw **map; /* array of rule ptrs to ease lookup */ uint32_t id; /* ruleset id */ int n_rules; /* number of static rules */ void *tablestate; /* runtime table info */ void *valuestate; /* runtime table value info */ int *idxmap; /* skipto array of rules */ void **srvstate; /* runtime service mappings */ #if defined( __linux__ ) || defined( _WIN32 ) spinlock_t rwmtx; #else struct rmlock rwmtx; #endif int static_len; /* total len of static rules (v0) */ uint32_t gencnt; /* NAT generation count */ LIST_HEAD(nat_list, cfg_nat) nat; /* list of nat entries */ struct ip_fw *default_rule; struct tables_config *tblcfg; /* tables module data */ void *ifcfg; /* interface module data */ int *idxmap_back; /* standby skipto array of rules */ struct namedobj_instance *srvmap; /* cfg name->number mappings */ #if defined( __linux__ ) || defined( _WIN32 ) spinlock_t uh_lock; #else struct rwlock uh_lock; /* lock for upper half */ #endif }; /* 64-byte structure representing multi-field table value */ struct table_value { uint32_t tag; /* O_TAG/O_TAGGED */ uint32_t pipe; /* O_PIPE/O_QUEUE */ uint16_t divert; /* O_DIVERT/O_TEE */ uint16_t skipto; /* skipto, CALLRET */ uint32_t netgraph; /* O_NETGRAPH/O_NGTEE */ uint32_t fib; /* O_SETFIB */ uint32_t nat; /* O_NAT */ uint32_t nh4; uint8_t dscp; uint8_t spare0; uint16_t spare1; /* -- 32 bytes -- */ struct in6_addr nh6; uint32_t limit; /* O_LIMIT */ uint32_t zoneid; /* scope zone id for nh6 */ uint64_t refcnt; /* Number of references */ }; struct named_object { TAILQ_ENTRY(named_object) nn_next; /* namehash */ TAILQ_ENTRY(named_object) nv_next; /* valuehash */ char *name; /* object name */ uint16_t etlv; /* Export TLV id */ uint8_t subtype;/* object subtype within class */ uint8_t set; /* set object belongs to */ uint16_t kidx; /* object kernel index */ uint16_t spare; uint32_t ocnt; /* object counter for internal use */ uint32_t refcnt; /* number of references */ }; TAILQ_HEAD(namedobjects_head, named_object); struct sockopt; /* used by tcp_var.h */ struct sockopt_data { caddr_t kbuf; /* allocated buffer */ size_t ksize; /* given buffer size */ size_t koff; /* data already used */ size_t kavail; /* number of bytes available */ size_t ktotal; /* total bytes pushed */ struct sockopt *sopt; /* socket data */ caddr_t sopt_val; /* sopt user buffer */ size_t valsize; /* original data size */ }; struct ipfw_ifc; typedef void (ipfw_ifc_cb)(struct ip_fw_chain *ch, void *cbdata, uint16_t ifindex); struct ipfw_iface { struct named_object no; char ifname[64]; int resolved; uint16_t ifindex; uint16_t spare; uint64_t gencnt; TAILQ_HEAD(, ipfw_ifc) consumers; }; struct ipfw_ifc { TAILQ_ENTRY(ipfw_ifc) next; struct ipfw_iface *iface; ipfw_ifc_cb *cb; void *cbdata; }; /* Macro for working with various counters */ #define IPFW_INC_RULE_COUNTER(_cntr, _bytes) do { \ counter_u64_add((_cntr)->cntr, 1); \ counter_u64_add((_cntr)->cntr + 1, _bytes); \ if ((_cntr)->timestamp != time_uptime) \ (_cntr)->timestamp = time_uptime; \ } while (0) #define IPFW_INC_DYN_COUNTER(_cntr, _bytes) do { \ (_cntr)->pcnt++; \ (_cntr)->bcnt += _bytes; \ } while (0) #define IPFW_ZERO_RULE_COUNTER(_cntr) do { \ counter_u64_zero((_cntr)->cntr); \ counter_u64_zero((_cntr)->cntr + 1); \ (_cntr)->timestamp = 0; \ } while (0) #define IPFW_ZERO_DYN_COUNTER(_cntr) do { \ (_cntr)->pcnt = 0; \ (_cntr)->bcnt = 0; \ } while (0) #define TARG_VAL(ch, k, f) ((struct table_value *)((ch)->valuestate))[k].f #define IP_FW_ARG_TABLEARG(ch, a, f) \ (((a) == IP_FW_TARG) ? TARG_VAL(ch, tablearg, f) : (a)) /* * The lock is heavily used by ip_fw2.c (the main file) and ip_fw_nat.c * so the variable and the macros must be here. */ #if defined( __linux__ ) || defined( _WIN32 ) #define IPFW_LOCK_INIT(_chain) do { \ rw_init(&(_chain)->rwmtx, "IPFW static rules"); \ rw_init(&(_chain)->uh_lock, "IPFW UH lock"); \ } while (0) #define IPFW_LOCK_DESTROY(_chain) do { \ rw_destroy(&(_chain)->rwmtx); \ rw_destroy(&(_chain)->uh_lock); \ } while (0) #define IPFW_RLOCK_ASSERT(_chain) rw_assert(&(_chain)->rwmtx, RA_RLOCKED) #define IPFW_WLOCK_ASSERT(_chain) rw_assert(&(_chain)->rwmtx, RA_WLOCKED) #define IPFW_RLOCK_TRACKER #define IPFW_RLOCK(p) rw_rlock(&(p)->rwmtx) #define IPFW_RUNLOCK(p) rw_runlock(&(p)->rwmtx) #define IPFW_WLOCK(p) rw_wlock(&(p)->rwmtx) #define IPFW_WUNLOCK(p) rw_wunlock(&(p)->rwmtx) #define IPFW_PF_RLOCK(p) IPFW_RLOCK(p) #define IPFW_PF_RUNLOCK(p) IPFW_RUNLOCK(p) #else /* FreeBSD */ #define IPFW_LOCK_INIT(_chain) do { \ rm_init_flags(&(_chain)->rwmtx, "IPFW static rules", RM_RECURSE); \ rw_init(&(_chain)->uh_lock, "IPFW UH lock"); \ } while (0) #define IPFW_LOCK_DESTROY(_chain) do { \ rm_destroy(&(_chain)->rwmtx); \ rw_destroy(&(_chain)->uh_lock); \ } while (0) #define IPFW_RLOCK_ASSERT(_chain) rm_assert(&(_chain)->rwmtx, RA_RLOCKED) #define IPFW_WLOCK_ASSERT(_chain) rm_assert(&(_chain)->rwmtx, RA_WLOCKED) #define IPFW_RLOCK_TRACKER struct rm_priotracker _tracker #define IPFW_RLOCK(p) rm_rlock(&(p)->rwmtx, &_tracker) #define IPFW_RUNLOCK(p) rm_runlock(&(p)->rwmtx, &_tracker) #define IPFW_WLOCK(p) rm_wlock(&(p)->rwmtx) #define IPFW_WUNLOCK(p) rm_wunlock(&(p)->rwmtx) #define IPFW_PF_RLOCK(p) IPFW_RLOCK(p) #define IPFW_PF_RUNLOCK(p) IPFW_RUNLOCK(p) #endif #define IPFW_UH_RLOCK_ASSERT(_chain) rw_assert(&(_chain)->uh_lock, RA_RLOCKED) #define IPFW_UH_WLOCK_ASSERT(_chain) rw_assert(&(_chain)->uh_lock, RA_WLOCKED) #define IPFW_UH_UNLOCK_ASSERT(_chain) rw_assert(&(_chain)->uh_lock, RA_UNLOCKED) #define IPFW_UH_RLOCK(p) rw_rlock(&(p)->uh_lock) #define IPFW_UH_RUNLOCK(p) rw_runlock(&(p)->uh_lock) #define IPFW_UH_WLOCK(p) rw_wlock(&(p)->uh_lock) #define IPFW_UH_WUNLOCK(p) rw_wunlock(&(p)->uh_lock) struct obj_idx { uint16_t uidx; /* internal index supplied by userland */ uint16_t kidx; /* kernel object index */ uint16_t off; /* tlv offset from rule end in 4-byte words */ uint8_t spare; uint8_t type; /* object type within its category */ }; struct rule_check_info { uint16_t flags; /* rule-specific check flags */ uint16_t object_opcodes; /* num of opcodes referencing objects */ uint16_t urule_numoff; /* offset of rulenum in bytes */ uint8_t version; /* rule version */ uint8_t spare; ipfw_obj_ctlv *ctlv; /* name TLV containter */ struct ip_fw *krule; /* resulting rule pointer */ caddr_t urule; /* original rule pointer */ struct obj_idx obuf[8]; /* table references storage */ }; /* Legacy interface support */ /* * FreeBSD 8 export rule format */ struct ip_fw_rule0 { struct ip_fw *x_next; /* linked list of rules */ struct ip_fw *next_rule; /* ptr to next [skipto] rule */ /* 'next_rule' is used to pass up 'set_disable' status */ uint16_t act_ofs; /* offset of action in 32-bit units */ uint16_t cmd_len; /* # of 32-bit words in cmd */ uint16_t rulenum; /* rule number */ uint8_t set; /* rule set (0..31) */ uint8_t _pad; /* padding */ uint32_t id; /* rule id */ /* These fields are present in all rules. */ uint64_t pcnt; /* Packet counter */ uint64_t bcnt; /* Byte counter */ uint32_t timestamp; /* tv_sec of last match */ ipfw_insn cmd[1]; /* storage for commands */ }; struct ip_fw_bcounter0 { uint64_t pcnt; /* Packet counter */ uint64_t bcnt; /* Byte counter */ uint32_t timestamp; /* tv_sec of last match */ }; /* Kernel rule length */ /* * RULE _K_ SIZE _V_ -> * get kernel size from userland rool version _V_. * RULE _U_ SIZE _V_ -> * get user size version _V_ from kernel rule * RULESIZE _V_ -> * get user size rule length */ /* FreeBSD8 <> current kernel format */ #define RULEUSIZE0(r) (sizeof(struct ip_fw_rule0) + (r)->cmd_len * 4 - 4) #define RULEKSIZE0(r) roundup2((sizeof(struct ip_fw) + (r)->cmd_len*4 - 4), 8) /* FreeBSD11 <> current kernel format */ #define RULEUSIZE1(r) (roundup2(sizeof(struct ip_fw_rule) + \ (r)->cmd_len * 4 - 4, 8)) #define RULEKSIZE1(r) roundup2((sizeof(struct ip_fw) + (r)->cmd_len*4 - 4), 8) /* * Tables/Objects index rewriting code */ /* Default and maximum number of ipfw tables/objects. */ #define IPFW_TABLES_MAX 65536 #define IPFW_TABLES_DEFAULT 128 #define IPFW_OBJECTS_MAX 65536 #define IPFW_OBJECTS_DEFAULT 1024 #define CHAIN_TO_SRV(ch) ((ch)->srvmap) #define SRV_OBJECT(ch, idx) ((ch)->srvstate[(idx)]) struct tid_info { uint32_t set; /* table set */ uint16_t uidx; /* table index */ uint8_t type; /* table type */ uint8_t atype; uint8_t spare; int tlen; /* Total TLV size block */ void *tlvs; /* Pointer to first TLV */ }; /* * Classifier callback. Checks if @cmd opcode contains kernel object reference. * If true, returns its index and type. * Returns 0 if match is found, 1 overwise. */ typedef int (ipfw_obj_rw_cl)(ipfw_insn *cmd, uint16_t *puidx, uint8_t *ptype); /* * Updater callback. Sets kernel object reference index to @puidx */ typedef void (ipfw_obj_rw_upd)(ipfw_insn *cmd, uint16_t puidx); /* * Finder callback. Tries to find named object by name (specified via @ti). * Stores found named object pointer in @pno. * If object was not found, NULL is stored. * * Return 0 if input data was valid. */ typedef int (ipfw_obj_fname_cb)(struct ip_fw_chain *ch, struct tid_info *ti, struct named_object **pno); /* * Another finder callback. Tries to findex named object by kernel index. * * Returns pointer to named object or NULL. */ typedef struct named_object *(ipfw_obj_fidx_cb)(struct ip_fw_chain *ch, uint16_t kidx); /* * Object creator callback. Tries to create object specified by @ti. * Stores newly-allocated object index in @pkidx. * * Returns 0 on success. */ typedef int (ipfw_obj_create_cb)(struct ip_fw_chain *ch, struct tid_info *ti, uint16_t *pkidx); /* * Object destroy callback. Intended to free resources allocated by * create_object callback. */ typedef void (ipfw_obj_destroy_cb)(struct ip_fw_chain *ch, struct named_object *no); /* * Sets handler callback. Handles moving and swaping set of named object. * SWAP_ALL moves all named objects from set `set' to `new_set' and vise versa; * TEST_ALL checks that there aren't any named object with conflicting names; * MOVE_ALL moves all named objects from set `set' to `new_set'; * COUNT_ONE used to count number of references used by object with kidx `set'; * TEST_ONE checks that named object with kidx `set' can be moved to `new_set`; * MOVE_ONE moves named object with kidx `set' to set `new_set'. */ enum ipfw_sets_cmd { SWAP_ALL = 0, TEST_ALL, MOVE_ALL, COUNT_ONE, TEST_ONE, MOVE_ONE }; typedef int (ipfw_obj_sets_cb)(struct ip_fw_chain *ch, uint16_t set, uint8_t new_set, enum ipfw_sets_cmd cmd); struct opcode_obj_rewrite { uint32_t opcode; /* Opcode to act upon */ uint32_t etlv; /* Relevant export TLV id */ ipfw_obj_rw_cl *classifier; /* Check if rewrite is needed */ ipfw_obj_rw_upd *update; /* update cmd with new value */ ipfw_obj_fname_cb *find_byname; /* Find named object by name */ ipfw_obj_fidx_cb *find_bykidx; /* Find named object by kidx */ ipfw_obj_create_cb *create_object; /* Create named object */ ipfw_obj_destroy_cb *destroy_object;/* Destroy named object */ ipfw_obj_sets_cb *manage_sets; /* Swap or move sets */ }; #define IPFW_ADD_OBJ_REWRITER(f, c) do { \ if ((f) != 0) \ ipfw_add_obj_rewriter(c, \ sizeof(c) / sizeof(c[0])); \ } while(0) #define IPFW_DEL_OBJ_REWRITER(l, c) do { \ if ((l) != 0) \ ipfw_del_obj_rewriter(c, \ sizeof(c) / sizeof(c[0])); \ } while(0) /* In ip_fw_iface.c */ int ipfw_iface_init(void); void ipfw_iface_destroy(void); void vnet_ipfw_iface_destroy(struct ip_fw_chain *ch); int ipfw_iface_ref(struct ip_fw_chain *ch, char *name, struct ipfw_ifc *ic); void ipfw_iface_unref(struct ip_fw_chain *ch, struct ipfw_ifc *ic); void ipfw_iface_add_notify(struct ip_fw_chain *ch, struct ipfw_ifc *ic); void ipfw_iface_del_notify(struct ip_fw_chain *ch, struct ipfw_ifc *ic); /* In ip_fw_sockopt.c */ void ipfw_init_skipto_cache(struct ip_fw_chain *chain); void ipfw_destroy_skipto_cache(struct ip_fw_chain *chain); int ipfw_find_rule(struct ip_fw_chain *chain, uint32_t key, uint32_t id); int ipfw_ctl3(struct sockopt *sopt); int ipfw_add_protected_rule(struct ip_fw_chain *chain, struct ip_fw *rule, int locked); void ipfw_reap_add(struct ip_fw_chain *chain, struct ip_fw **head, struct ip_fw *rule); void ipfw_reap_rules(struct ip_fw *head); void ipfw_init_counters(void); void ipfw_destroy_counters(void); struct ip_fw *ipfw_alloc_rule(struct ip_fw_chain *chain, size_t rulesize); void ipfw_free_rule(struct ip_fw *rule); int ipfw_match_range(struct ip_fw *rule, ipfw_range_tlv *rt); int ipfw_mark_object_kidx(uint32_t *bmask, uint16_t etlv, uint16_t kidx); ipfw_insn *ipfw_get_action(struct ip_fw *); typedef int (sopt_handler_f)(struct ip_fw_chain *ch, ip_fw3_opheader *op3, struct sockopt_data *sd); struct ipfw_sopt_handler { uint16_t opcode; uint8_t version; uint8_t dir; sopt_handler_f *handler; uint64_t refcnt; }; #define HDIR_SET 0x01 /* Handler is used to set some data */ #define HDIR_GET 0x02 /* Handler is used to retrieve data */ #define HDIR_BOTH HDIR_GET|HDIR_SET void ipfw_init_sopt_handler(void); void ipfw_destroy_sopt_handler(void); void ipfw_add_sopt_handler(struct ipfw_sopt_handler *sh, size_t count); int ipfw_del_sopt_handler(struct ipfw_sopt_handler *sh, size_t count); caddr_t ipfw_get_sopt_space(struct sockopt_data *sd, size_t needed); caddr_t ipfw_get_sopt_header(struct sockopt_data *sd, size_t needed); #define IPFW_ADD_SOPT_HANDLER(f, c) do { \ if ((f) != 0) \ ipfw_add_sopt_handler(c, \ sizeof(c) / sizeof(c[0])); \ } while(0) #define IPFW_DEL_SOPT_HANDLER(l, c) do { \ if ((l) != 0) \ ipfw_del_sopt_handler(c, \ sizeof(c) / sizeof(c[0])); \ } while(0) struct namedobj_instance; typedef int (objhash_cb_t)(struct namedobj_instance *ni, struct named_object *, void *arg); typedef uint32_t (objhash_hash_f)(struct namedobj_instance *ni, const void *key, uint32_t kopt); typedef int (objhash_cmp_f)(struct named_object *no, const void *key, uint32_t kopt); struct namedobj_instance *ipfw_objhash_create(uint32_t items); void ipfw_objhash_destroy(struct namedobj_instance *); void ipfw_objhash_bitmap_alloc(uint32_t items, void **idx, int *pblocks); void ipfw_objhash_bitmap_merge(struct namedobj_instance *ni, void **idx, int *blocks); void ipfw_objhash_bitmap_swap(struct namedobj_instance *ni, void **idx, int *blocks); void ipfw_objhash_bitmap_free(void *idx, int blocks); void ipfw_objhash_set_hashf(struct namedobj_instance *ni, objhash_hash_f *f); struct named_object *ipfw_objhash_lookup_name(struct namedobj_instance *ni, uint32_t set, char *name); struct named_object *ipfw_objhash_lookup_name_type(struct namedobj_instance *ni, uint32_t set, uint32_t type, const char *name); struct named_object *ipfw_objhash_lookup_kidx(struct namedobj_instance *ni, uint16_t idx); int ipfw_objhash_same_name(struct namedobj_instance *ni, struct named_object *a, struct named_object *b); void ipfw_objhash_add(struct namedobj_instance *ni, struct named_object *no); void ipfw_objhash_del(struct namedobj_instance *ni, struct named_object *no); uint32_t ipfw_objhash_count(struct namedobj_instance *ni); uint32_t ipfw_objhash_count_type(struct namedobj_instance *ni, uint16_t type); int ipfw_objhash_foreach(struct namedobj_instance *ni, objhash_cb_t *f, void *arg); int ipfw_objhash_foreach_type(struct namedobj_instance *ni, objhash_cb_t *f, void *arg, uint16_t type); int ipfw_objhash_free_idx(struct namedobj_instance *ni, uint16_t idx); int ipfw_objhash_alloc_idx(void *n, uint16_t *pidx); void ipfw_objhash_set_funcs(struct namedobj_instance *ni, objhash_hash_f *hash_f, objhash_cmp_f *cmp_f); int ipfw_objhash_find_type(struct namedobj_instance *ni, struct tid_info *ti, uint32_t etlv, struct named_object **pno); void ipfw_export_obj_ntlv(struct named_object *no, ipfw_obj_ntlv *ntlv); ipfw_obj_ntlv *ipfw_find_name_tlv_type(void *tlvs, int len, uint16_t uidx, uint32_t etlv); void ipfw_init_obj_rewriter(void); void ipfw_destroy_obj_rewriter(void); void ipfw_add_obj_rewriter(struct opcode_obj_rewrite *rw, size_t count); int ipfw_del_obj_rewriter(struct opcode_obj_rewrite *rw, size_t count); int create_objects_compat(struct ip_fw_chain *ch, ipfw_insn *cmd, struct obj_idx *oib, struct obj_idx *pidx, struct tid_info *ti); void update_opcode_kidx(ipfw_insn *cmd, uint16_t idx); int classify_opcode_kidx(ipfw_insn *cmd, uint16_t *puidx); void ipfw_init_srv(struct ip_fw_chain *ch); void ipfw_destroy_srv(struct ip_fw_chain *ch); int ipfw_check_object_name_generic(const char *name); int ipfw_obj_manage_sets(struct namedobj_instance *ni, uint16_t type, uint16_t set, uint8_t new_set, enum ipfw_sets_cmd cmd); /* In ip_fw_eaction.c */ typedef int (ipfw_eaction_t)(struct ip_fw_chain *ch, struct ip_fw_args *args, ipfw_insn *cmd, int *done); int ipfw_eaction_init(struct ip_fw_chain *ch, int first); void ipfw_eaction_uninit(struct ip_fw_chain *ch, int last); uint16_t ipfw_add_eaction(struct ip_fw_chain *ch, ipfw_eaction_t handler, const char *name); int ipfw_del_eaction(struct ip_fw_chain *ch, uint16_t eaction_id); int ipfw_run_eaction(struct ip_fw_chain *ch, struct ip_fw_args *args, ipfw_insn *cmd, int *done); int ipfw_reset_eaction(struct ip_fw_chain *ch, struct ip_fw *rule, uint16_t eaction_id, uint16_t default_id, uint16_t instance_id); int ipfw_reset_eaction_instance(struct ip_fw_chain *ch, uint16_t eaction_id, uint16_t instance_id); /* In ip_fw_table.c */ struct table_info; typedef int (table_lookup_t)(struct table_info *ti, void *key, uint32_t keylen, uint32_t *val); int ipfw_lookup_table(struct ip_fw_chain *ch, uint16_t tbl, uint16_t plen, void *paddr, uint32_t *val); struct named_object *ipfw_objhash_lookup_table_kidx(struct ip_fw_chain *ch, uint16_t kidx); int ipfw_ref_table(struct ip_fw_chain *ch, ipfw_obj_ntlv *ntlv, uint16_t *kidx); void ipfw_unref_table(struct ip_fw_chain *ch, uint16_t kidx); int ipfw_init_tables(struct ip_fw_chain *ch, int first); int ipfw_resize_tables(struct ip_fw_chain *ch, unsigned int ntables); int ipfw_switch_tables_namespace(struct ip_fw_chain *ch, unsigned int nsets); void ipfw_destroy_tables(struct ip_fw_chain *ch, int last); /* In ip_fw_nat.c -- XXX to be moved to ip_var.h */ extern struct cfg_nat *(*lookup_nat_ptr)(struct nat_list *, int); typedef int ipfw_nat_t(struct ip_fw_args *, struct cfg_nat *, struct mbuf *); typedef int ipfw_nat_cfg_t(struct sockopt *); VNET_DECLARE(int, ipfw_nat_ready); #define V_ipfw_nat_ready VNET(ipfw_nat_ready) #define IPFW_NAT_LOADED (V_ipfw_nat_ready) extern ipfw_nat_t *ipfw_nat_ptr; extern ipfw_nat_cfg_t *ipfw_nat_cfg_ptr; extern ipfw_nat_cfg_t *ipfw_nat_del_ptr; extern ipfw_nat_cfg_t *ipfw_nat_get_cfg_ptr; extern ipfw_nat_cfg_t *ipfw_nat_get_log_ptr; /* Helper functions for IP checksum adjustment */ static __inline uint16_t cksum_add(uint16_t sum, uint16_t a) { uint16_t res; res = sum + a; return (res + (res < a)); } static __inline uint16_t cksum_adjust(uint16_t oldsum, uint16_t old, uint16_t new) { return (~cksum_add(cksum_add(~oldsum, ~old), new)); } #endif /* _KERNEL */ #endif /* _IPFW2_PRIVATE_H */
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