31a6358fff
Setting DSCP support is done via O_SETDSCP which works for both IPv4 and IPv6 packets. Fast checksum recalculation (RFC 1624) is done for IPv4. Dscp can be specified by name (AFXY, CSX, BE, EF), by value (0..63) or via tablearg. Matching DSCP is done via another opcode (O_DSCP) which accepts several classes at once (af11,af22,be). Classes are stored in bitmask (2 u32 words). Many people made their variants of this patch, the ones I'm aware of are (in alphabetic order): Dmitrii Tejblum Marcelo Araujo Roman Bogorodskiy (novel) Sergey Matveichuk (sem) Sergey Ryabin PR: kern/102471, kern/121122 MFC after: 2 weeks
294 lines
6.8 KiB
C
294 lines
6.8 KiB
C
/*
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* Copyright (c) 2002-2003 Luigi Rizzo
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* Copyright (c) 1996 Alex Nash, Paul Traina, Poul-Henning Kamp
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* Copyright (c) 1994 Ugen J.S.Antsilevich
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*
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* Idea and grammar partially left from:
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* Copyright (c) 1993 Daniel Boulet
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*
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* Redistribution and use in source forms, with and without modification,
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* are permitted provided that this entire comment appears intact.
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*
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* Redistribution in binary form may occur without any restrictions.
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* Obviously, it would be nice if you gave credit where credit is due
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* but requiring it would be too onerous.
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*
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* This software is provided ``AS IS'' without any warranties of any kind.
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*
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* NEW command line interface for IP firewall facility
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*
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* $FreeBSD$
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*/
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/*
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* Options that can be set on the command line.
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* When reading commands from a file, a subset of the options can also
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* be applied globally by specifying them before the file name.
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* After that, each line can contain its own option that changes
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* the global value.
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* XXX The context is not restored after each line.
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*/
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struct cmdline_opts {
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/* boolean options: */
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int do_value_as_ip; /* show table value as IP */
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int do_resolv; /* try to resolve all ip to names */
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int do_time; /* Show time stamps */
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int do_quiet; /* Be quiet in add and flush */
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int do_pipe; /* this cmd refers to a pipe/queue/sched */
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int do_nat; /* this cmd refers to a nat config */
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int do_dynamic; /* display dynamic rules */
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int do_expired; /* display expired dynamic rules */
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int do_compact; /* show rules in compact mode */
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int do_force; /* do not ask for confirmation */
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int show_sets; /* display the set each rule belongs to */
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int test_only; /* only check syntax */
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int comment_only; /* only print action and comment */
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int verbose; /* be verbose on some commands */
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/* The options below can have multiple values. */
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int do_sort; /* field to sort results (0 = no) */
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/* valid fields are 1 and above */
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int use_set; /* work with specified set number */
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/* 0 means all sets, otherwise apply to set use_set - 1 */
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};
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extern struct cmdline_opts co;
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/*
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* _s_x is a structure that stores a string <-> token pairs, used in
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* various places in the parser. Entries are stored in arrays,
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* with an entry with s=NULL as terminator.
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* The search routines are match_token() and match_value().
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* Often, an element with x=0 contains an error string.
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*
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*/
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struct _s_x {
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char const *s;
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int x;
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};
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enum tokens {
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TOK_NULL=0,
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TOK_OR,
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TOK_NOT,
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TOK_STARTBRACE,
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TOK_ENDBRACE,
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TOK_ACCEPT,
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TOK_COUNT,
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TOK_PIPE,
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TOK_LINK,
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TOK_QUEUE,
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TOK_FLOWSET,
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TOK_SCHED,
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TOK_DIVERT,
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TOK_TEE,
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TOK_NETGRAPH,
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TOK_NGTEE,
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TOK_FORWARD,
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TOK_SKIPTO,
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TOK_DENY,
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TOK_REJECT,
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TOK_RESET,
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TOK_UNREACH,
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TOK_CHECKSTATE,
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TOK_NAT,
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TOK_REASS,
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TOK_CALL,
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TOK_RETURN,
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TOK_ALTQ,
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TOK_LOG,
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TOK_TAG,
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TOK_UNTAG,
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TOK_TAGGED,
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TOK_UID,
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TOK_GID,
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TOK_JAIL,
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TOK_IN,
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TOK_LIMIT,
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TOK_KEEPSTATE,
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TOK_LAYER2,
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TOK_OUT,
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TOK_DIVERTED,
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TOK_DIVERTEDLOOPBACK,
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TOK_DIVERTEDOUTPUT,
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TOK_XMIT,
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TOK_RECV,
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TOK_VIA,
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TOK_FRAG,
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TOK_IPOPTS,
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TOK_IPLEN,
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TOK_IPID,
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TOK_IPPRECEDENCE,
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TOK_DSCP,
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TOK_IPTOS,
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TOK_IPTTL,
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TOK_IPVER,
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TOK_ESTAB,
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TOK_SETUP,
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TOK_TCPDATALEN,
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TOK_TCPFLAGS,
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TOK_TCPOPTS,
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TOK_TCPSEQ,
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TOK_TCPACK,
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TOK_TCPWIN,
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TOK_ICMPTYPES,
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TOK_MAC,
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TOK_MACTYPE,
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TOK_VERREVPATH,
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TOK_VERSRCREACH,
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TOK_ANTISPOOF,
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TOK_IPSEC,
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TOK_COMMENT,
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TOK_PLR,
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TOK_NOERROR,
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TOK_BUCKETS,
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TOK_DSTIP,
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TOK_SRCIP,
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TOK_DSTPORT,
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TOK_SRCPORT,
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TOK_ALL,
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TOK_MASK,
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TOK_FLOW_MASK,
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TOK_SCHED_MASK,
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TOK_BW,
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TOK_DELAY,
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TOK_PROFILE,
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TOK_BURST,
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TOK_RED,
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TOK_GRED,
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TOK_DROPTAIL,
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TOK_PROTO,
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/* dummynet tokens */
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TOK_WEIGHT,
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TOK_LMAX,
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TOK_PRI,
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TOK_TYPE,
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TOK_SLOTSIZE,
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TOK_IP,
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TOK_IF,
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TOK_ALOG,
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TOK_DENY_INC,
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TOK_SAME_PORTS,
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TOK_UNREG_ONLY,
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TOK_SKIP_GLOBAL,
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TOK_RESET_ADDR,
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TOK_ALIAS_REV,
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TOK_PROXY_ONLY,
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TOK_REDIR_ADDR,
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TOK_REDIR_PORT,
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TOK_REDIR_PROTO,
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TOK_IPV6,
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TOK_FLOWID,
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TOK_ICMP6TYPES,
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TOK_EXT6HDR,
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TOK_DSTIP6,
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TOK_SRCIP6,
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TOK_IPV4,
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TOK_UNREACH6,
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TOK_RESET6,
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TOK_FIB,
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TOK_SETFIB,
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TOK_LOOKUP,
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TOK_SOCKARG,
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TOK_SETDSCP,
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};
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/*
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* the following macro returns an error message if we run out of
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* arguments.
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*/
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#define NEED(_p, msg) {if (!_p) errx(EX_USAGE, msg);}
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#define NEED1(msg) {if (!(*av)) errx(EX_USAGE, msg);}
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int pr_u64(uint64_t *pd, int width);
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/* memory allocation support */
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void *safe_calloc(size_t number, size_t size);
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void *safe_realloc(void *ptr, size_t size);
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/* string comparison functions used for historical compatibility */
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int _substrcmp(const char *str1, const char* str2);
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int _substrcmp2(const char *str1, const char* str2, const char* str3);
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/* utility functions */
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int match_token(struct _s_x *table, char *string);
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char const *match_value(struct _s_x *p, int value);
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int do_cmd(int optname, void *optval, uintptr_t optlen);
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struct in6_addr;
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void n2mask(struct in6_addr *mask, int n);
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int contigmask(uint8_t *p, int len);
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/*
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* Forward declarations to avoid include way too many headers.
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* C does not allow duplicated typedefs, so we use the base struct
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* that the typedef points to.
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* Should the typedefs use a different type, the compiler will
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* still detect the change when compiling the body of the
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* functions involved, so we do not lose error checking.
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*/
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struct _ipfw_insn;
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struct _ipfw_insn_altq;
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struct _ipfw_insn_u32;
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struct _ipfw_insn_ip6;
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struct _ipfw_insn_icmp6;
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/*
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* The reserved set numer. This is a constant in ip_fw.h
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* but we store it in a variable so other files do not depend
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* in that header just for one constant.
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*/
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extern int resvd_set_number;
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/* first-level command handlers */
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void ipfw_add(char *av[]);
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void ipfw_show_nat(int ac, char **av);
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void ipfw_config_pipe(int ac, char **av);
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void ipfw_config_nat(int ac, char **av);
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void ipfw_sets_handler(char *av[]);
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void ipfw_table_handler(int ac, char *av[]);
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void ipfw_sysctl_handler(char *av[], int which);
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void ipfw_delete(char *av[]);
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void ipfw_flush(int force);
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void ipfw_zero(int ac, char *av[], int optname);
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void ipfw_list(int ac, char *av[], int show_counters);
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/* altq.c */
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void altq_set_enabled(int enabled);
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u_int32_t altq_name_to_qid(const char *name);
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void print_altq_cmd(struct _ipfw_insn_altq *altqptr);
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/* dummynet.c */
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void dummynet_list(int ac, char *av[], int show_counters);
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void dummynet_flush(void);
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int ipfw_delete_pipe(int pipe_or_queue, int n);
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/* ipv6.c */
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void print_unreach6_code(uint16_t code);
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void print_ip6(struct _ipfw_insn_ip6 *cmd, char const *s);
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void print_flow6id(struct _ipfw_insn_u32 *cmd);
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void print_icmp6types(struct _ipfw_insn_u32 *cmd);
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void print_ext6hdr(struct _ipfw_insn *cmd );
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struct _ipfw_insn *add_srcip6(struct _ipfw_insn *cmd, char *av, int cblen);
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struct _ipfw_insn *add_dstip6(struct _ipfw_insn *cmd, char *av, int cblen);
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void fill_flow6(struct _ipfw_insn_u32 *cmd, char *av, int cblen);
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void fill_unreach6_code(u_short *codep, char *str);
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void fill_icmp6types(struct _ipfw_insn_icmp6 *cmd, char *av, int cblen);
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int fill_ext6hdr(struct _ipfw_insn *cmd, char *av);
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