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freebsd-skq/sbin/pfctl/pfctl_parser.h
Patrick Kelsey 1d34c9dac8 Reduce pf.conf parsing cost for configs that define N queues from O(N^2) to O(N) 
The number of syscalls made during parsing of any config that
defines tables is also reduced, and incorrect warnings that HFSC
parent queue bandwidths were smaller than the sum of their child
bandwidths have been fixed.

Reviewed by:	kp
MFC after:	1 week
Sponsored by:	RG Nets
Differential Revision:	https://reviews.freebsd.org/D18759
2019-01-22 00:50:24 +00:00

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/* $OpenBSD: pfctl_parser.h,v 1.86 2006/10/31 23:46:25 mcbride Exp $ */
/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2001 Daniel Hartmeier
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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 COPYRIGHT HOLDERS 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
* COPYRIGHT HOLDERS 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 _PFCTL_PARSER_H_
#define _PFCTL_PARSER_H_
#define PF_OSFP_FILE "/etc/pf.os"
#define PF_OPT_DISABLE 0x0001
#define PF_OPT_ENABLE 0x0002
#define PF_OPT_VERBOSE 0x0004
#define PF_OPT_NOACTION 0x0008
#define PF_OPT_QUIET 0x0010
#define PF_OPT_CLRRULECTRS 0x0020
#define PF_OPT_USEDNS 0x0040
#define PF_OPT_VERBOSE2 0x0080
#define PF_OPT_DUMMYACTION 0x0100
#define PF_OPT_DEBUG 0x0200
#define PF_OPT_SHOWALL 0x0400
#define PF_OPT_OPTIMIZE 0x0800
#define PF_OPT_NUMERIC 0x1000
#define PF_OPT_MERGE 0x2000
#define PF_OPT_RECURSE 0x4000
#define PF_TH_ALL 0xFF
#define PF_NAT_PROXY_PORT_LOW 50001
#define PF_NAT_PROXY_PORT_HIGH 65535
#define PF_OPTIMIZE_BASIC 0x0001
#define PF_OPTIMIZE_PROFILE 0x0002
#define FCNT_NAMES { \
"searches", \
"inserts", \
"removals", \
NULL \
}
struct pfr_buffer; /* forward definition */
struct pfctl {
int dev;
int opts;
int optimize;
int loadopt;
int asd; /* anchor stack depth */
int bn; /* brace number */
int brace;
int tdirty; /* kernel dirty */
#define PFCTL_ANCHOR_STACK_DEPTH 64
struct pf_anchor *astack[PFCTL_ANCHOR_STACK_DEPTH];
struct pfioc_pooladdr paddr;
struct pfioc_altq *paltq;
struct pfioc_queue *pqueue;
struct pfr_buffer *trans;
struct pf_anchor *anchor, *alast;
const char *ruleset;
/* 'set foo' options */
u_int32_t timeout[PFTM_MAX];
u_int32_t limit[PF_LIMIT_MAX];
u_int32_t debug;
u_int32_t hostid;
char *ifname;
u_int8_t timeout_set[PFTM_MAX];
u_int8_t limit_set[PF_LIMIT_MAX];
u_int8_t debug_set;
u_int8_t hostid_set;
u_int8_t ifname_set;
};
struct node_if {
char ifname[IFNAMSIZ];
u_int8_t not;
u_int8_t dynamic; /* antispoof */
u_int ifa_flags;
struct node_if *next;
struct node_if *tail;
};
struct node_host {
struct pf_addr_wrap addr;
struct pf_addr bcast;
struct pf_addr peer;
sa_family_t af;
u_int8_t not;
u_int32_t ifindex; /* link-local IPv6 addrs */
char *ifname;
u_int ifa_flags;
struct node_host *next;
struct node_host *tail;
};
struct node_os {
char *os;
pf_osfp_t fingerprint;
struct node_os *next;
struct node_os *tail;
};
struct node_queue_bw {
u_int64_t bw_absolute;
u_int16_t bw_percent;
};
struct node_hfsc_sc {
struct node_queue_bw m1; /* slope of 1st segment; bps */
u_int d; /* x-projection of m1; msec */
struct node_queue_bw m2; /* slope of 2nd segment; bps */
u_int8_t used;
};
struct node_hfsc_opts {
struct node_hfsc_sc realtime;
struct node_hfsc_sc linkshare;
struct node_hfsc_sc upperlimit;
int flags;
};
struct node_fairq_sc {
struct node_queue_bw m1; /* slope of 1st segment; bps */
u_int d; /* x-projection of m1; msec */
struct node_queue_bw m2; /* slope of 2nd segment; bps */
u_int8_t used;
};
struct node_fairq_opts {
struct node_fairq_sc linkshare;
struct node_queue_bw hogs_bw;
u_int nbuckets;
int flags;
};
struct node_queue_opt {
int qtype;
union {
struct cbq_opts cbq_opts;
struct codel_opts codel_opts;
struct priq_opts priq_opts;
struct node_hfsc_opts hfsc_opts;
struct node_fairq_opts fairq_opts;
} data;
};
#define QPRI_BITSET_SIZE 256
BITSET_DEFINE(qpri_bitset, QPRI_BITSET_SIZE);
LIST_HEAD(gen_sc, segment);
struct pfctl_altq {
struct pf_altq pa;
struct {
STAILQ_ENTRY(pfctl_altq) link;
u_int64_t bwsum;
struct qpri_bitset qpris;
int children;
int root_classes;
int default_classes;
struct gen_sc lssc;
struct gen_sc rtsc;
} meta;
};
#ifdef __FreeBSD__
/*
* XXX
* Absolutely this is not correct location to define this.
* Should we use an another sperate header file?
*/
#define SIMPLEQ_HEAD STAILQ_HEAD
#define SIMPLEQ_HEAD_INITIALIZER STAILQ_HEAD_INITIALIZER
#define SIMPLEQ_ENTRY STAILQ_ENTRY
#define SIMPLEQ_FIRST STAILQ_FIRST
#define SIMPLEQ_END(head) NULL
#define SIMPLEQ_EMPTY STAILQ_EMPTY
#define SIMPLEQ_NEXT STAILQ_NEXT
/*#define SIMPLEQ_FOREACH STAILQ_FOREACH*/
#define SIMPLEQ_FOREACH(var, head, field) \
for((var) = SIMPLEQ_FIRST(head); \
(var) != SIMPLEQ_END(head); \
(var) = SIMPLEQ_NEXT(var, field))
#define SIMPLEQ_INIT STAILQ_INIT
#define SIMPLEQ_INSERT_HEAD STAILQ_INSERT_HEAD
#define SIMPLEQ_INSERT_TAIL STAILQ_INSERT_TAIL
#define SIMPLEQ_INSERT_AFTER STAILQ_INSERT_AFTER
#define SIMPLEQ_REMOVE_HEAD STAILQ_REMOVE_HEAD
#endif
SIMPLEQ_HEAD(node_tinithead, node_tinit);
struct node_tinit { /* table initializer */
SIMPLEQ_ENTRY(node_tinit) entries;
struct node_host *host;
char *file;
};
/* optimizer created tables */
struct pf_opt_tbl {
char pt_name[PF_TABLE_NAME_SIZE];
int pt_rulecount;
int pt_generated;
struct node_tinithead pt_nodes;
struct pfr_buffer *pt_buf;
};
#define PF_OPT_TABLE_PREFIX "__automatic_"
/* optimizer pf_rule container */
struct pf_opt_rule {
struct pf_rule por_rule;
struct pf_opt_tbl *por_src_tbl;
struct pf_opt_tbl *por_dst_tbl;
u_int64_t por_profile_count;
TAILQ_ENTRY(pf_opt_rule) por_entry;
TAILQ_ENTRY(pf_opt_rule) por_skip_entry[PF_SKIP_COUNT];
};
TAILQ_HEAD(pf_opt_queue, pf_opt_rule);
int pfctl_rules(int, char *, int, int, char *, struct pfr_buffer *);
int pfctl_optimize_ruleset(struct pfctl *, struct pf_ruleset *);
int pfctl_add_rule(struct pfctl *, struct pf_rule *, const char *);
int pfctl_add_altq(struct pfctl *, struct pf_altq *);
int pfctl_add_pool(struct pfctl *, struct pf_pool *, sa_family_t);
void pfctl_move_pool(struct pf_pool *, struct pf_pool *);
void pfctl_clear_pool(struct pf_pool *);
int pfctl_set_timeout(struct pfctl *, const char *, int, int);
int pfctl_set_optimization(struct pfctl *, const char *);
int pfctl_set_limit(struct pfctl *, const char *, unsigned int);
int pfctl_set_logif(struct pfctl *, char *);
int pfctl_set_hostid(struct pfctl *, u_int32_t);
int pfctl_set_debug(struct pfctl *, char *);
int pfctl_set_interface_flags(struct pfctl *, char *, int, int);
int parse_config(char *, struct pfctl *);
int parse_flags(char *);
int pfctl_load_anchors(int, struct pfctl *, struct pfr_buffer *);
void print_pool(struct pf_pool *, u_int16_t, u_int16_t, sa_family_t, int);
void print_src_node(struct pf_src_node *, int);
void print_rule(struct pf_rule *, const char *, int, int);
void print_tabledef(const char *, int, int, struct node_tinithead *);
void print_status(struct pf_status *, int);
void print_running(struct pf_status *);
int eval_pfaltq(struct pfctl *, struct pf_altq *, struct node_queue_bw *,
struct node_queue_opt *);
int eval_pfqueue(struct pfctl *, struct pf_altq *, struct node_queue_bw *,
struct node_queue_opt *);
void print_altq(const struct pf_altq *, unsigned, struct node_queue_bw *,
struct node_queue_opt *);
void print_queue(const struct pf_altq *, unsigned, struct node_queue_bw *,
int, struct node_queue_opt *);
int pfctl_define_table(char *, int, int, const char *, struct pfr_buffer *,
u_int32_t);
void pfctl_clear_fingerprints(int, int);
int pfctl_file_fingerprints(int, int, const char *);
pf_osfp_t pfctl_get_fingerprint(const char *);
int pfctl_load_fingerprints(int, int);
char *pfctl_lookup_fingerprint(pf_osfp_t, char *, size_t);
void pfctl_show_fingerprints(int);
struct icmptypeent {
const char *name;
u_int8_t type;
};
struct icmpcodeent {
const char *name;
u_int8_t type;
u_int8_t code;
};
const struct icmptypeent *geticmptypebynumber(u_int8_t, u_int8_t);
const struct icmptypeent *geticmptypebyname(char *, u_int8_t);
const struct icmpcodeent *geticmpcodebynumber(u_int8_t, u_int8_t, u_int8_t);
const struct icmpcodeent *geticmpcodebyname(u_long, char *, u_int8_t);
struct pf_timeout {
const char *name;
int timeout;
};
#define PFCTL_FLAG_FILTER 0x02
#define PFCTL_FLAG_NAT 0x04
#define PFCTL_FLAG_OPTION 0x08
#define PFCTL_FLAG_ALTQ 0x10
#define PFCTL_FLAG_TABLE 0x20
extern const struct pf_timeout pf_timeouts[];
void set_ipmask(struct node_host *, u_int8_t);
int check_netmask(struct node_host *, sa_family_t);
int unmask(struct pf_addr *, sa_family_t);
void ifa_load(void);
int get_query_socket(void);
struct node_host *ifa_exists(char *);
struct node_host *ifa_grouplookup(char *ifa_name, int flags);
struct node_host *ifa_lookup(char *, int);
struct node_host *host(const char *);
int append_addr(struct pfr_buffer *, char *, int);
int append_addr_host(struct pfr_buffer *,
struct node_host *, int, int);
#endif /* _PFCTL_PARSER_H_ */
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