8a8af94240
Allow pf (l2) to be used to redirect ethernet packets to a different
interface.
The intended use case is to send 802.1x challenges out to a side
interface, to enable AT&T links to function with pfSense as a gateway,
rather than the AT&T provided hardware.
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D37193
420 lines
11 KiB
C
420 lines
11 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2021 Rubicon Communications, LLC (Netgate)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _PFCTL_IOCTL_H_
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#define _PFCTL_IOCTL_H_
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#include <netpfil/pf/pf.h>
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struct pfctl_anchor;
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struct pfctl_eth_anchor;
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struct pfctl_status_counter {
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uint64_t id;
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uint64_t counter;
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char *name;
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TAILQ_ENTRY(pfctl_status_counter) entry;
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};
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TAILQ_HEAD(pfctl_status_counters, pfctl_status_counter);
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struct pfctl_status {
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bool running;
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uint32_t since;
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uint32_t debug;
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uint32_t hostid;
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uint64_t states;
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uint64_t src_nodes;
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char ifname[IFNAMSIZ];
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uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
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bool syncookies_active;
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struct pfctl_status_counters counters;
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struct pfctl_status_counters lcounters;
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struct pfctl_status_counters fcounters;
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struct pfctl_status_counters scounters;
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uint64_t pcounters[2][2][3];
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uint64_t bcounters[2][2];
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};
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struct pfctl_eth_rulesets_info {
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uint32_t nr;
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};
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struct pfctl_eth_rules_info {
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uint32_t nr;
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uint32_t ticket;
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};
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struct pfctl_eth_addr {
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uint8_t addr[ETHER_ADDR_LEN];
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uint8_t mask[ETHER_ADDR_LEN];
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bool neg;
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bool isset;
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};
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struct pfctl_eth_rule {
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uint32_t nr;
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bool quick;
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/* Filter */
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char ifname[IFNAMSIZ];
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uint8_t ifnot;
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uint8_t direction;
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uint16_t proto;
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struct pfctl_eth_addr src, dst;
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struct pf_rule_addr ipsrc, ipdst;
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char match_tagname[PF_TAG_NAME_SIZE];
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uint16_t match_tag;
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bool match_tag_not;
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/* Stats */
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uint64_t evaluations;
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uint64_t packets[2];
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uint64_t bytes[2];
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time_t last_active_timestamp;
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/* Action */
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char qname[PF_QNAME_SIZE];
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char tagname[PF_TAG_NAME_SIZE];
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uint16_t dnpipe;
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uint32_t dnflags;
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char bridge_to[IFNAMSIZ];
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uint8_t action;
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struct pfctl_eth_anchor *anchor;
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uint8_t anchor_relative;
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uint8_t anchor_wildcard;
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TAILQ_ENTRY(pfctl_eth_rule) entries;
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};
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TAILQ_HEAD(pfctl_eth_rules, pfctl_eth_rule);
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struct pfctl_eth_ruleset_info {
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uint32_t nr;
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char name[PF_ANCHOR_NAME_SIZE];
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char path[MAXPATHLEN];
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};
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struct pfctl_eth_ruleset {
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struct pfctl_eth_rules rules;
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struct pfctl_eth_anchor *anchor;
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};
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struct pfctl_eth_anchor {
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struct pfctl_eth_anchor *parent;
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char name[PF_ANCHOR_NAME_SIZE];
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char path[MAXPATHLEN];
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struct pfctl_eth_ruleset ruleset;
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int refcnt; /* anchor rules */
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int match; /* XXX: used for pfctl black magic */
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};
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struct pfctl_pool {
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struct pf_palist list;
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struct pf_pooladdr *cur;
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struct pf_poolhashkey key;
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struct pf_addr counter;
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struct pf_mape_portset mape;
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int tblidx;
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uint16_t proxy_port[2];
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uint8_t opts;
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};
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struct pfctl_rules_info {
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uint32_t nr;
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uint32_t ticket;
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};
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struct pfctl_rule {
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struct pf_rule_addr src;
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struct pf_rule_addr dst;
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union pf_rule_ptr skip[PF_SKIP_COUNT];
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char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
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uint32_t ridentifier;
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char ifname[IFNAMSIZ];
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char qname[PF_QNAME_SIZE];
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char pqname[PF_QNAME_SIZE];
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char tagname[PF_TAG_NAME_SIZE];
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char match_tagname[PF_TAG_NAME_SIZE];
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char overload_tblname[PF_TABLE_NAME_SIZE];
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TAILQ_ENTRY(pfctl_rule) entries;
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struct pfctl_pool rpool;
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uint64_t evaluations;
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uint64_t packets[2];
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uint64_t bytes[2];
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time_t last_active_timestamp;
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struct pfi_kif *kif;
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struct pfctl_anchor *anchor;
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struct pfr_ktable *overload_tbl;
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pf_osfp_t os_fingerprint;
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int rtableid;
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uint32_t timeout[PFTM_MAX];
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uint32_t max_states;
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uint32_t max_src_nodes;
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uint32_t max_src_states;
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uint32_t max_src_conn;
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struct {
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uint32_t limit;
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uint32_t seconds;
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} max_src_conn_rate;
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uint32_t qid;
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uint32_t pqid;
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uint16_t dnpipe;
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uint16_t dnrpipe;
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uint32_t free_flags;
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uint32_t nr;
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uint32_t prob;
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uid_t cuid;
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pid_t cpid;
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uint64_t states_cur;
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uint64_t states_tot;
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uint64_t src_nodes;
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uint16_t return_icmp;
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uint16_t return_icmp6;
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uint16_t max_mss;
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uint16_t tag;
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uint16_t match_tag;
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uint16_t scrub_flags;
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struct pf_rule_uid uid;
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struct pf_rule_gid gid;
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uint32_t rule_flag;
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uint8_t action;
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uint8_t direction;
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uint8_t log;
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uint8_t logif;
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uint8_t quick;
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uint8_t ifnot;
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uint8_t match_tag_not;
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uint8_t natpass;
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uint8_t keep_state;
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sa_family_t af;
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uint8_t proto;
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uint8_t type;
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uint8_t code;
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uint8_t flags;
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uint8_t flagset;
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uint8_t min_ttl;
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uint8_t allow_opts;
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uint8_t rt;
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uint8_t return_ttl;
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uint8_t tos;
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uint8_t set_tos;
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uint8_t anchor_relative;
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uint8_t anchor_wildcard;
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uint8_t flush;
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uint8_t prio;
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uint8_t set_prio[2];
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struct {
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struct pf_addr addr;
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uint16_t port;
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} divert;
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};
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TAILQ_HEAD(pfctl_rulequeue, pfctl_rule);
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struct pfctl_ruleset {
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struct {
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struct pfctl_rulequeue queues[2];
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struct {
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struct pfctl_rulequeue *ptr;
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struct pfctl_rule **ptr_array;
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uint32_t rcount;
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uint32_t ticket;
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int open;
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} active, inactive;
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} rules[PF_RULESET_MAX];
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struct pfctl_anchor *anchor;
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uint32_t tticket;
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int tables;
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int topen;
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};
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RB_HEAD(pfctl_anchor_global, pfctl_anchor);
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RB_HEAD(pfctl_anchor_node, pfctl_anchor);
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struct pfctl_anchor {
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RB_ENTRY(pfctl_anchor) entry_global;
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RB_ENTRY(pfctl_anchor) entry_node;
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struct pfctl_anchor *parent;
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struct pfctl_anchor_node children;
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char name[PF_ANCHOR_NAME_SIZE];
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char path[MAXPATHLEN];
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struct pfctl_ruleset ruleset;
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int refcnt; /* anchor rules */
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int match; /* XXX: used for pfctl black magic */
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};
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RB_PROTOTYPE(pfctl_anchor_global, pfctl_anchor, entry_global,
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pf_anchor_compare);
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RB_PROTOTYPE(pfctl_anchor_node, pfctl_anchor, entry_node,
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pf_anchor_compare);
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struct pfctl_state_cmp {
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uint64_t id;
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uint32_t creatorid;
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uint8_t direction;
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};
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struct pfctl_kill {
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struct pfctl_state_cmp cmp;
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sa_family_t af;
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int proto;
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struct pf_rule_addr src;
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struct pf_rule_addr dst;
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struct pf_rule_addr rt_addr;
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char ifname[IFNAMSIZ];
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char label[PF_RULE_LABEL_SIZE];
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bool kill_match;
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};
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struct pfctl_state_peer {
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uint32_t seqlo;
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uint32_t seqhi;
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uint32_t seqdiff;
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uint8_t state;
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uint8_t wscale;
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};
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struct pfctl_state_key {
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struct pf_addr addr[2];
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uint16_t port[2];
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sa_family_t af;
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uint8_t proto;
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};
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struct pfctl_state {
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TAILQ_ENTRY(pfctl_state) entry;
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uint64_t id;
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uint32_t creatorid;
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uint8_t direction;
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struct pfctl_state_peer src;
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struct pfctl_state_peer dst;
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uint32_t rule;
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uint32_t anchor;
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uint32_t nat_rule;
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struct pf_addr rt_addr;
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struct pfctl_state_key key[2]; /* addresses stack and wire */
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char ifname[IFNAMSIZ];
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char orig_ifname[IFNAMSIZ];
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uint64_t packets[2];
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uint64_t bytes[2];
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uint32_t creation;
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uint32_t expire;
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uint32_t pfsync_time;
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uint8_t state_flags;
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uint32_t sync_flags;
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};
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TAILQ_HEAD(pfctl_statelist, pfctl_state);
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struct pfctl_states {
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struct pfctl_statelist states;
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size_t count;
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};
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enum pfctl_syncookies_mode {
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PFCTL_SYNCOOKIES_NEVER,
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PFCTL_SYNCOOKIES_ALWAYS,
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PFCTL_SYNCOOKIES_ADAPTIVE
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};
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extern const char* PFCTL_SYNCOOKIES_MODE_NAMES[];
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struct pfctl_syncookies {
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enum pfctl_syncookies_mode mode;
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uint8_t highwater; /* Percent */
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uint8_t lowwater; /* Percent */
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};
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struct pfctl_status* pfctl_get_status(int dev);
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void pfctl_free_status(struct pfctl_status *status);
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int pfctl_get_eth_rulesets_info(int dev,
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struct pfctl_eth_rulesets_info *ri, const char *path);
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int pfctl_get_eth_ruleset(int dev, const char *path, int nr,
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struct pfctl_eth_ruleset_info *ri);
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int pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules,
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const char *path);
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int pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket,
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const char *path, struct pfctl_eth_rule *rule, bool clear,
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char *anchor_call);
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int pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r,
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const char *anchor, const char *anchor_call, uint32_t ticket);
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int pfctl_get_rules_info(int dev, struct pfctl_rules_info *rules,
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uint32_t ruleset, const char *path);
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int pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket,
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const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
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char *anchor_call);
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int pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket,
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const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
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char *anchor_call, bool clear);
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int pfctl_add_rule(int dev, const struct pfctl_rule *r,
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const char *anchor, const char *anchor_call, uint32_t ticket,
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uint32_t pool_ticket);
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int pfctl_set_keepcounters(int dev, bool keep);
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int pfctl_get_states(int dev, struct pfctl_states *states);
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void pfctl_free_states(struct pfctl_states *states);
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int pfctl_clear_states(int dev, const struct pfctl_kill *kill,
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unsigned int *killed);
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int pfctl_kill_states(int dev, const struct pfctl_kill *kill,
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unsigned int *killed);
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int pfctl_clear_rules(int dev, const char *anchorname);
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int pfctl_clear_nat(int dev, const char *anchorname);
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int pfctl_clear_eth_rules(int dev, const char *anchorname);
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int pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s);
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int pfctl_get_syncookies(int dev, struct pfctl_syncookies *s);
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int pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
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*addr, int size, int *nadd, int flags);
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int pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
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*addr, int size, int *ndel, int flags);
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int pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
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*addr, int size, int *size2, int *nadd, int *ndel, int *nchange,
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int flags);
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int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
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*addr, int *size, int flags);
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#endif
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