Commit Graph

683 Commits

Author SHA1 Message Date
melifaro
58e70e361d * Add new "flow" table type to support N=1..5-tuple lookups
* Add "flow:hash" algorithm

Kernel changes:
* Add O_IP_FLOW_LOOKUP opcode to support "flow" lookups
* Add IPFW_TABLE_FLOW table type
* Add "struct tflow_entry" as strage for 6-tuple flows
* Add "flow:hash" algorithm. Basically it is auto-growing chained hash table.
  Additionally, we store mask of fields we need to compare in each instance/

* Increase ipfw_obj_tentry size by adding struct tflow_entry
* Add per-algorithm stat (ifpw_ta_tinfo) to ipfw_xtable_info
* Increase algoname length: 32 -> 64 (algo options passed there as string)
* Assume every table type can be customized by flags, use u8 to store "tflags" field.
* Simplify ipfw_find_table_entry() by providing @tentry directly to algo callback.
* Fix bug in cidr:chash resize procedure.

Userland changes:
* add "flow table(NAME)" syntax to support n-tuple checking tables.
* make fill_flags() separate function to ease working with _s_x arrays
* change "table info" output to reflect longer "type" fields

Syntax:
ipfw table fl2 create type flow:[src-ip][,proto][,src-port][,dst-ip][dst-port] [algo flow:hash]

Examples:

0:02 [2] zfscurr0# ipfw table fl2 create type flow:src-ip,proto,dst-port algo flow:hash
0:02 [2] zfscurr0# ipfw table fl2 info
+++ table(fl2), set(0) +++
 kindex: 0, type: flow:src-ip,proto,dst-port
 valtype: number, references: 0
 algorithm: flow:hash
 items: 0, size: 280
0:02 [2] zfscurr0# ipfw table fl2 add 2a02:6b8::333,tcp,443 45000
0:02 [2] zfscurr0# ipfw table fl2 add 10.0.0.92,tcp,80 22000
0:02 [2] zfscurr0# ipfw table fl2 list
+++ table(fl2), set(0) +++
2a02:6b8::333,6,443 45000
10.0.0.92,6,80 22000
0:02 [2] zfscurr0# ipfw add 200 count tcp from me to 78.46.89.105 80 flow 'table(fl2)'
00200 count tcp from me to 78.46.89.105 dst-port 80 flow table(fl2)
0:03 [2] zfscurr0# ipfw show
00200   0     0 count tcp from me to 78.46.89.105 dst-port 80 flow table(fl2)
65535 617 59416 allow ip from any to any
0:03 [2] zfscurr0# telnet -s 10.0.0.92 78.46.89.105 80
Trying 78.46.89.105...
..
0:04 [2] zfscurr0# ipfw show
00200   5   272 count tcp from me to 78.46.89.105 dst-port 80 flow table(fl2)
65535 682 66733 allow ip from any to any
2014-07-31 20:08:19 +00:00
melifaro
41bd5f650b Improve "ipfw talist" readability. 2014-07-30 15:01:32 +00:00
melifaro
4419c812fe * Add number:array algorithm lookup method.
Kernel changes:
* s/IPFW_TABLE_U32/IPFW_TABLE_NUMBER/
* Force "lookup <port|uid|gid|jid>" to be IPFW_TABLE_NUMBER
* Support "lookup" method for number tables
* Add number:array algorihm (i32 as key, auto-growing).

Userland changes:
* Support named tables in "lookup <tag> Table"
* Fix handling of "table(NAME,val)" case
* Support printing "number" table data.
2014-07-30 14:52:26 +00:00
melifaro
bf787a59a7 * Dump available table algorithms via "ipfw talist" cmd.
Kernel changes:
* Add type/refcount fields to table algo instances.
* Add IP_FW_TABLES_ALIST opcode to export available algorihms to userland.

Userland changes:
* Fix cores on empty input inside "ipfw table" handler.
* Add "ipfw talist" cmd to print availabled kernel algorithms.
* Change "table info" output to reflect long algorithm config lines.
2014-07-29 22:44:26 +00:00
melifaro
fa3f38a6a0 * Add generic ipfw interface tracking API
* Rewrite interface tables to use interface indexes

Kernel changes:
* Add generic interface tracking API:
 - ipfw_iface_ref (must call unlocked, performs lazy init if needed, allocates
  state & bumps ref)
 - ipfw_iface_add_ntfy(UH_WLOCK+WLOCK, links comsumer & runs its callback to
  update ifindex)
 - ipfw_iface_del_ntfy(UH_WLOCK+WLOCK, unlinks consumer)
 - ipfw_iface_unref(unlocked, drops reference)
Additionally, consumer callbacks are called in interface withdrawal/departure.

* Rewrite interface tables to use iface tracking API. Currently tables are
  implemented the following way:
  runtime data is stored as sorted array of {ifidx, val} for existing interfaces
  full data is stored inside namedobj instance (chained hashed table).

* Add IP_FW_XIFLIST opcode to dump status of tracked interfaces

* Pass @chain ptr to most non-locked algorithm callbacks:
  (prepare_add, prepare_del, flush_entry ..). This may be needed for better
  interaction of given algorithm an other ipfw subsystems

* Add optional "change_ti" algorithm handler to permit updating of
  cached table_info pointer (happens in case of table_max resize)

* Fix small bug in ipfw_list_tables()
* Add badd (insert into sorted array) and bdel (remove from sorted array) funcs

Userland changes:
* Add "iflist" cmd to print status of currently tracked interface
* Add stringnum_cmp for better interface/table names sorting
2014-07-28 19:01:25 +00:00
melifaro
505e5ae081 * Require explicit table creation before use on kernel side.
* Add resize callbacks for upcoming table-based algorithms.

Kernel changes:
* s/ipfw_modify_table/ipfw_manage_table_ent/
* Simplify add_table_entry(): make table creation a separate piece of code.
  Do not perform creation if not in "compat" mode.
* Add ability to perform modification of algorithm state (like table resize).
  The following callbacks were added:
 - prepare_mod (allocate new state, without locks)
 - fill_mod (UH_WLOCK, copy old state to new one)
 - modify (UH_WLOCK + WLOCK, switch state)
 - flush_mod (no locks, flushes allocated data)
 Given callbacks are called if table modification has been requested by add or
   delete callbacks. Additional u64 tc->'flags' field was added to pass these
   requests.
* Change add/del table ent format: permit adding/removing multiple entries
   at once (only 1 supported at the moment).

Userland changes:
* Auto-create tables with warning
2014-07-26 13:37:25 +00:00
melifaro
3f7d90b385 * Use different rule structures in kernel/userland.
* Switch kernel to use per-cpu counters for rules.
* Keep ABI/API.

Kernel changes:
* Each rules is now exported as TLV with optional extenable
  counter block (ip_fW_bcounter for base one) and
  ip_fw_rule for rule&cmd data.
* Counters needs to be explicitly requested by IPFW_CFG_GET_COUNTERS flag.
* Separate counters from rules in kernel and clean up ip_fw a bit.
* Pack each rule in IPFW_TLV_RULE_ENT tlv to ease parsing.
* Introduce versioning in container TLV (may be needed in future).
* Fix ipfw_cfg_lheader broken u64 alignment.

Userland changes:
* Use set_mask from cfg header when requesting config
* Fix incorrect read accouting in ipfw_show_config()
* Use IPFW_RULE_NOOPT flag instead of playing with _pad
* Fix "ipfw -d list": do not print counters for dynamic states
* Some small fixes
2014-07-08 23:11:15 +00:00
melifaro
7189aec01e * Prepare to pass other dynamic states via ipfw_dump_config()
Kernel changes:
* Change dump format for dynamic states:
  each state is now stored inside ipfw_obj_dyntlv
  last dynamic state is indicated by IPFW_DF_LAST flag
* Do not perform sooptcopyout() for !SOPT_GET requests.

Userland changes:
* Introduce foreach_state() function handler to ease work
  with different states passed by ipfw_dump_config().
2014-07-06 23:26:34 +00:00
melifaro
0eba52a18e * Add "lookup" table functionality to permit userland entry lookups.
* Bump table dump format preserving old ABI.

Kernel size:
* Add IP_FW_TABLE_XFIND to handle "lookup" request from userland.
* Add ta_find_tentry() algorithm callbacks/handlers to support lookups.
* Fully switch to ipfw_obj_tentry for various table dumps:
  algorithms are now required to support the latest (ipfw_obj_tentry) entry
    dump format, the rest is handled by generic dump code.
  IP_FW_TABLE_XLIST opcode version bumped (0 -> 1).
* Eliminate legacy ta_dump_entry algo handler:
  dump_table_entry() converts data from current to legacy format.

Userland side:
* Add "lookup" table parameter.
* Change the way table type is guessed: call table_get_info() first,
  and check value for IPv4/IPv6 type IFF table does not exist.
* Fix table_get_list(): do more tries if supplied buffer is not enough.
* Sparate table_show_entry() from table_show_list().
2014-07-06 18:16:04 +00:00
melifaro
99023231d3 Fully switch to named tables:
Kernel changes:
* Introduce ipfw_obj_tentry table entry structure to force u64 alignment.
* Support "update-on-existing-key" "add" bahavior (TEI_FLAGS_UPDATED).
* Use "subtype" field to distingush between IPv4 and IPv6 table records
  instead of previous hack.
* Add value type (vtype) field for kernel tables. Current types are
  number,ip and dscp
* Fix sets mask retrieval for old binaries
* Fix crash while using interface tables

Userland changes:
* Switch ipfw_table_handler() to use named-only tables.
* Add "table NAME create [type {cidr|iface|u32} [valtype {number|ip|dscp}] ..."
* Switch ipfw_table_handler to match_token()-based parser.
* Switch ipfw_sets_handler to use new ipfw_get_config() for mask  retrieval.
* Allow ipfw set X table ... syntax to permit using per-set table namespaces.
2014-07-03 22:25:59 +00:00
melifaro
75913dd997 * Add new IP_FW_XADD opcode which permits to
a) specify table ids as names
  b) add multiple rules at once.
Partially convert current code for atomic addition of multiple rules.
2014-06-29 22:35:47 +00:00
melifaro
145faf7cb6 Enable kernel-side rule filtering based on user request.
Make do_get3() function return real error.
2014-06-29 09:29:27 +00:00
melifaro
5d627fdb8b Suppord showing named tables in ipfw(8) rule listing.
Kernel changes:
* change base TLV header to be u64 (so size can be u32).
* Introduce ipfw_obj_ctlv generc container TLV.
* Add IP_FW_XGET opcode which is now used for atomic configuration
  retrieval. One can specify needed configuration pieces to retrieve
  via flags field. Currently supported are
  IPFW_CFG_GET_STATIC (static rules) and
  IPFW_CFG_GET_STATES (dynamic states).
  Other configuration pieces (tables, pipes, etc..) support is planned.

Userland changes:
* Switch ipfw(8) to use new IP_FW_XGET for rule listing.
* Split rule listing code get and show pieces.
* Make several steps forward towards libipfw:
  permit printing states and rules(paritally) to supplied buffer.
  do not die on malloc/kernel failure inside given printing functions.
  stop assuming cmdline_opts is global symbol.
2014-06-28 23:20:24 +00:00
joel
d94b51f5b9 mdoc: remove superfluous paragraph macros. 2014-06-23 18:40:21 +00:00
bapt
42044eb342 use .Mt to mark up email addresses consistently (part1)
PR:		191174
Submitted by:	Franco Fichtner  <franco@lastsummer.de>
2014-06-20 09:40:43 +00:00
melifaro
b06860b3e2 Simplify opcode handling.
* Use one u16 from op3 header to implement opcode versioning.
* IP_FW_TABLE_XLIST has now 2 handlers, for ver.0 (old) and ver.1 (current).
* Every getsockopt request is now handled in ip_fw_table.c
* Rename new opcodes:
IP_FW_OBJ_DEL -> IP_FW_TABLE_XDESTROY
IP_FW_OBJ_LISTSIZE -> IP_FW_TABLES_XGETSIZE
IP_FW_OBJ_LIST -> IP_FW_TABLES_XLIST
IP_FW_OBJ_INFO -> IP_FW_TABLE_XINFO
IP_FW_OBJ_INFO -> IP_FW_TABLE_XFLUSH

* Add some docs about using given opcodes.
* Group some legacy opcode/handlers.
2014-06-15 13:40:27 +00:00
melifaro
fe9646e6ff Move further to eliminate next pieces of number-assuming code inside tables.
Kernel changes:
* Add IP_FW_OBJ_FLUSH opcode (flush table based on its name/set)
* Add IP_FW_OBJ_DUMP opcode (dumps table data based on its names/set)
* Add IP_FW_OBJ_LISTSIZE / IP_FW_OBJ_LIST opcodes (get list of kernel tables)

Userland changes:
* move tables code to separate tables.c file
* get rid of tables_max
* switch "all"/list handling to new opcodes
2014-06-14 22:47:25 +00:00
melifaro
f9fb63fe8c Add API to ease adding new algorithms/new tabletypes to ipfw.
Kernel-side changelog:
* Split general tables code and algorithm-specific table data.
  Current algorithms (IPv4/IPv6 radix and interface tables radix) moved to
  new ip_fw_table_algo.c file.
  Tables code now supports any algorithm implementing the following callbacks:
+struct table_algo {
+       char            name[64];
+       int             idx;
+       ta_init         *init;
+       ta_destroy      *destroy;
+       table_lookup_t  *lookup;
+       ta_prepare_add  *prepare_add;
+       ta_prepare_del  *prepare_del;
+       ta_add          *add;
+       ta_del          *del;
+       ta_flush_entry  *flush_entry;
+       ta_foreach      *foreach;
+       ta_dump_entry   *dump_entry;
+       ta_dump_xentry  *dump_xentry;
+};

* Change ->state, ->xstate, ->tabletype fields of ip_fw_chain to
   ->tablestate pointer (array of 32 bytes structures necessary for
   runtime lookups (can be probably shrinked to 16 bytes later):

   +struct table_info {
   +       table_lookup_t  *lookup;        /* Lookup function */
   +       void            *state;         /* Lookup radix/other structure */
   +       void            *xstate;        /* eXtended state */
   +       u_long          data;           /* Hints for given func */
   +};

* Add count method for namedobj instance to ease size calculations
* Bump ip_fw3 buffer in ipfw_clt 128->256 bytes.
* Improve bitmask resizing on tables_max change.
* Remove table numbers checking from most places.
* Fix wrong nesting in ipfw_rewrite_table_uidx().

* Add IP_FW_OBJ_LIST opcode (list all objects of given type, currently
    implemented for IPFW_OBJTYPE_TABLE).
* Add IP_FW_OBJ_LISTSIZE (get buffer size to hold IP_FW_OBJ_LIST data,
    currenly implemented for IPFW_OBJTYPE_TABLE).
* Add IP_FW_OBJ_INFO (requests info for one object of given type).

Some name changes:
s/ipfw_xtable_tlv/ipfw_obj_tlv/ (no table specifics)
s/ipfw_xtable_ntlv/ipfw_obj_ntlv/ (no table specifics)

Userland changes:
* Add do_set3() cmd to ipfw2 to ease dealing with op3-embeded opcodes.
* Add/improve support for destroy/info cmds.
2014-06-14 10:58:39 +00:00
melifaro
01ec53e019 Make ipfw tables use names as used-level identifier internally:
* Add namedobject set-aware api capable of searching/allocation objects by their name/idx.
* Switch tables code to use string ids for configuration tasks.
* Change locking model: most configuration changes are protected with UH lock, runtime-visible are protected with both locks.
* Reduce number of arguments passed to ipfw_table_add/del by using separate structure.
* Add internal V_fw_tables_sets tunable (set to 0) to prepare for set-aware tables (requires opcodes/client support)
* Implement typed table referencing (and tables are implicitly allocated with all state like radix ptrs on reference)
* Add "destroy" ipfw(8) using new IP_FW_DELOBJ opcode

Namedobj more detailed:
* Blackbox api providing methods to add/del/search/enumerate objects
* Statically-sized hashes for names/indexes
* Per-set bitmask to indicate free indexes
* Separate methods for index alloc/delete/resize

Basically, there should not be any user-visible changes except the following:
* reducing table_max is not supported
* flush & add change table type won't work if table is referenced

Sponsored by:	Yandex LLC
2014-06-12 09:59:11 +00:00
hiren
cc47b6d947 ECN marking implenetation for dummynet.
Changes include both DCTCP and RFC 3168 ECN marking methodology.

DCTCP draft: http://tools.ietf.org/html/draft-bensley-tcpm-dctcp-00

Submitted by:	Midori Kato (aoimidori27@gmail.com)
Worked with:	Lars Eggert (lars@netapp.com)
Reviewed by:	luigi, hiren
2014-06-01 07:28:24 +00:00
melifaro
f4783a05e9 Fix wrong formatting of 0.0.0.0/X table records in ipfw(8).
Add `flags` u16 field to the hole in ipfw_table_xentry structure.
Kernel has been guessing address family for supplied record based
on xent length size.
Userland, however, has been getting fixed-size ipfw_table_xentry structures
guessing address family by checking address by IN6_IS_ADDR_V4COMPAT().

Fix this behavior by providing specific IPFW_TCF_INET flag for IPv4 records.

PR:		bin/189471
Submitted by:	Dennis Yusupoff <dyr@smartspb.net>
MFC after:	2 weeks
2014-05-17 13:45:03 +00:00
sjg
5860f0d106 Updated dependencies 2014-05-16 14:09:51 +00:00
sjg
1a7e48acf1 Updated dependencies 2014-05-10 05:16:28 +00:00
sjg
ed3fc70bf5 Merge from head 2014-05-08 23:54:15 +00:00
imp
2118f42afd Use src.opts.mk in preference to bsd.own.mk except where we need stuff
from the latter.
2014-05-06 04:22:01 +00:00
sjg
5e568154a0 Merge head 2014-04-28 07:50:45 +00:00
glebius
02cb746956 Fix world build WITHOUT_PF.
Sponsored by:	Nginx, Inc.
2014-02-12 09:59:48 +00:00
crees
0120e5eb34 Minor grammar fix
PR:		docs/185057
Submitted by:	Yuri (yuri@rawbw.com)
Approved by:	gjb (mentor)
2013-12-21 21:56:12 +00:00
melifaro
ce16a97371 Add net.inet.ip.fw.dyn_keep_states sysctl which
re-links dynamic states to default rule instead of
flushing on rule deletion.
This can be useful while performing ruleset reload
(think about `atomic` reload via changing sets).
Currently it is turned off by default.

MFC after:	2 weeks
Sponsored by:	Yandex LLC
2013-12-18 20:17:05 +00:00
melifaro
c9cfc8e322 Check ipfw table numbers in both user and kernel space before rule addition.
Found by:	Saychik Pavel <umka@localka.net>
MFC after:	2 weeks
Sponsored by:	Yandex LLC
2013-11-28 10:28:28 +00:00
melifaro
fd22811209 Fix key lookup in ipfw(8) broken since r232865.
Print warning for IPv4 address strings which are valid in
inet_aton() but not valid in inet_pton(). (1)

Found by:	Özkan KIRIK <ozkan.kirik@gmail.com>
Submitted by:	Ian Smith <smithi@nimnet.asn.au> (1)
MFC after:	2 weeks
Sponsored by:	Yandex LLC
2013-11-27 10:10:25 +00:00
sjg
62bb106222 Merge from head 2013-09-05 20:18:59 +00:00
se
fd85b64785 Remove duplicated parapgraph.
MFC after:	3 days
2013-07-24 08:36:29 +00:00
melifaro
960402d8a4 Fix ipfw(8) sets of ipv6 addresses handling.
Conditionally use stack buffer instead of calling strdup().

PR:		bin/104921
MFC after:	2 weeks
2013-05-18 04:49:00 +00:00
sjg
97d8b94956 sync from head 2013-04-12 20:48:55 +00:00
joel
5dfb164cba Minor spelling and grammar fixes. 2013-04-11 19:05:24 +00:00
joel
048fb92f58 Remove EOL whitespace. 2013-03-21 11:22:13 +00:00
melifaro
d50a0fe376 Remove unused variable. 2013-03-20 10:36:38 +00:00
melifaro
31a6358fff Add ipfw support for setting/matching DiffServ codepoints (DSCP).
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
2013-03-20 10:35:33 +00:00
sjg
6d37b86f2b Updated dependencies 2013-03-11 17:21:52 +00:00
melifaro
68eaa885ca Do not suddenly fail on some rulesets if -n (syntax check only) is specified
and ipfw(4) module is not loaded.

MFC after:	2 weeks
2013-03-04 19:01:38 +00:00
melifaro
12a0d12e98 Implement buffer size checking in ipfw(8) add cmd.
PR:		bin/65961
Submitted by:	Eugene Grosbein <eugen@grosbein.pp.ru>
MFC after:	2 weeks
2013-03-03 14:05:03 +00:00
melifaro
5026b7b931 Fix ipfw table argument parsing/printing.
Fix style.

PR:		kern/175909
Submitted by:	Daniel Hagerty <hag@linnaean.org>
MFC after:	2 weeks
2013-03-02 18:51:26 +00:00
sjg
0ee5295509 Updated dependencies 2013-02-16 01:23:54 +00:00
sjg
778e93c51a Sync from head 2012-11-04 02:52:03 +00:00
ae
4354018055 Remove the recently added sysctl variable net.pfil.forward.
Instead, add protocol specific mbuf flags M_IP_NEXTHOP and
M_IP6_NEXTHOP. Use them to indicate that the mbuf's chain
contains the PACKET_TAG_IPFORWARD tag. And do a tag lookup
only when this flag is set.

Suggested by:	andre
2012-11-02 01:20:55 +00:00
ae
71112b5a8e Remove the IPFIREWALL_FORWARD kernel option and make possible to turn
on the related functionality in the runtime via the sysctl variable
net.pfil.forward. It is turned off by default.

Sponsored by:	Yandex LLC
Discussed with:	net@
MFC after:	2 weeks
2012-10-25 09:39:14 +00:00
melifaro
b2ee4f5a3f Whitespace fixes
MFC after:	2 weeks
2012-09-24 17:34:30 +00:00
melifaro
095dbb2067 Permit table to be used as IPv6 address.
Reported by:	Serhiy Popov <sergiuspso@ukr.net>
MFC after:	2 weeks
2012-09-24 17:31:08 +00:00
bjk
8ae051cca3 Fix grammar in the portion about FIBs. Also, cross-reference
setfib(2) instead of setfib(1) for the 16-FIB limit.

PR:		docs/157452
Approved by:	hrs (mentor)
2012-09-18 16:00:44 +00:00
bjk
563984a874 Whitespace cleanup for ipfw.8 -- start each sentence on a new line,
and put a comma after e.g. and i.e..  While here, wrap long lines.

PR:		docs/157452
Approved by:	hrs (mentor)
2012-09-18 02:33:23 +00:00
kevlo
ce75cc6b07 Remove unused values 2012-09-11 07:54:41 +00:00
marcel
9dd41e3647 Sync FreeBSD's bmake branch with Juniper's internal bmake branch.
Requested by: Simon Gerraty <sjg@juniper.net>
2012-08-22 19:25:57 +00:00
luigi
c90cd26f16 remove the last __unused instance in sbin/ipfw.
This particular function (show_prerequisites() ) we should actually
remove the argument from the callers as well, but i'll do it at a
later time.
2012-07-30 11:02:22 +00:00
luigi
d8e2c218a2 Fix some compile errors at high WARNS, including one
for an uninitialized variable.

unused parameters and variables are annotated with
	(void)foo;	/* UNUSED */
instead of __unused, because this code needs to build
also on linux and windows.
2012-07-30 10:55:23 +00:00
issyl0
c32d927684 In ipfw(8), make the text about dynamic rules consistent.
PR:		docs/120539
Approved by:	gabor (mentor)
MFC after:	5 days
2012-07-16 22:15:30 +00:00
hrs
9a711a67d4 Make ipfw0 logging pseudo-interface clonable. It can be created automatically
by $firewall_logif rc.conf(5) variable at boot time or manually by ifconfig(8)
after a boot.

Discussed on:	freebsd-ipfw@
2012-07-09 07:16:19 +00:00
issyl0
ea0cd96bbf - Make ipfw's sched rules case insensitive, for user-friendliness.
- Add a note to the ipfw(8) man page about the rules no longer being
case sensitive.
- Fix some typos in the man page.

PR:		docs/164772
Reviewed by:	bz
Approved by:	gabor (doc mentor, src committer)
MFC after:	2 weeks
2012-07-03 08:42:48 +00:00
melifaro
7847bbf8a2 Update maximum number of tables available in ipfw to reflect
changes done in r233478.

Approved by:      kib(mentor)
MFC after:        3 days
2012-06-09 20:47:58 +00:00
joel
cac97f16fe mdoc: use Po and Pc macros instead of parens. Also avoid starting a line
with Ns.
2012-05-12 17:14:55 +00:00
eadler
1ef5fe44d3 Remove trailing whitespace per mdoc lint warning
Disussed with:	gavin
No objection from:	doc
Approved by:	joel
MFC after:	3 days
2012-03-29 05:02:12 +00:00
melifaro
97c3a90503 - Permit number of ipfw tables to be changed in runtime.
net.inet.ip.fw.tables_max is now read-write.

- Bump IPFW_TABLES_MAX to 65535
Default number of tables is still 128

- Remove IPFW_TABLES_MAX from ipfw(8) code.

Sponsored by Yandex LLC

Approved by:    kib(mentor)

MFC after:      2 weeks
2012-03-25 20:37:59 +00:00
joel
495c9c025f Remove superfluous paragraph macro. 2012-03-25 09:21:09 +00:00
melifaro
c614ff641f - Add ipfw eXtended tables permitting radix to be used for any kind of keys.
- Add support for IPv6 and interface extended tables
- Make number of tables to be loader tunable in range 0..65534.
- Use IP_FW3 opcode for all new extended table cmds

No ABI changes are introduced. Old userland will see valid tables for
IPv4 tables and no entries otherwise. Flush works for any table.

IP_FW3 socket option is used to encapsulate all new opcodes:
 /* IP_FW3 header/opcodes */
 typedef struct _ip_fw3_opheader {
        uint16_t opcode;        /* Operation opcode */
        uint16_t reserved[3];   /* Align to 64-bit boundary */
 } ip_fw3_opheader;

New opcodes added:
 IP_FW_TABLE_XADD, IP_FW_TABLE_XDEL, IP_FW_TABLE_XGETSIZE, IP_FW_TABLE_XLIST

ipfw(8) table argument parsing behavior is changed:
 'ipfw table 999 add host' now assumes 'host' to be interface name instead of
 hostname.

New tunable:
 net.inet.ip.fw.tables_max controls number of table supported by ipfw in given
 VNET instance. 128 is still the default value.

New syntax:
ipfw add skipto tablearg ip from any to any via table(42) in
ipfw add skipto tablearg ip from any to any via table(4242) out

This is a bit hackish, special interface name '\1' is used to signal interface
table number is passed in p.glob field.

Sponsored by Yandex LLC

Reviewed by:    ae
Approved by:    ae (mentor)

MFC after:      4 weeks
2012-03-12 14:07:57 +00:00
luigi
214b04c6bb remove some write-only variables.
There is another block of code that is now useless as the computation
is done in the kernel.
2012-03-01 17:35:16 +00:00
gavin
0104789850 Correct capitalization of "Hz" in user-visible text (manpages, printf(),
etc).

MFC after:	3 days
2012-02-28 13:19:34 +00:00
glebius
4085286c72 Bump .Dd for r231076.
Submitted by:	bz
2012-02-06 11:51:04 +00:00
glebius
d050a38ab4 Make the 'tcpwin' option of ipfw(8) accept ranges and lists.
Submitted by:	sem
2012-02-06 11:35:29 +00:00
uqs
5f1ca9b982 Spelling fixes for sbin/ 2012-01-07 16:09:33 +00:00
ed
e7e5b53bf1 Replace index() and rindex() calls with strchr() and strrchr().
The index() and rindex() functions were marked LEGACY in the 2001
revision of POSIX and were subsequently removed from the 2008 revision.
The strchr() and strrchr() functions are part of the C standard.

This makes the source code a lot more consistent, as most of these C
files also call into other str*() routines. In fact, about a dozen
already perform strchr() calls.
2012-01-03 18:51:58 +00:00
eadler
8903492b33 - Add fallthrough comment
Approved by:	pluknet
Found with:	Coverity Prevent(tm)
CID:		10125
2011-12-24 22:37:27 +00:00
glebius
8df3e0017d Fix parsing of redirect_addr argument.
PR:		kern/162739
MFC after:	3 days
2011-11-23 18:38:08 +00:00
eadler
6efa0e7f22 - fix duplicate "a a" in some comments
Submitted by:	eadler
Approved by:	simon
MFC after:	3 days
2011-11-13 17:06:33 +00:00
glebius
e5be97e3f0 Note that NAT instance argument can be tablearg.
PR:		misc/162265
Submitted by:	Paul Procacci <pprocacci gmail.com>
2011-11-10 12:05:26 +00:00
bz
eccbdd061b Add support for IPv6 to ipfw fwd:
Distinguish IPv4 and IPv6 addresses and optional port numbers in
user space to set the option for the correct protocol family.
Add support in the kernel for carrying the new IPv6 destination
address and port.
Add support to TCP and UDP for IPv6 and fix UDP IPv4 to not change
the address in the IP header.
Add support for IPv6 forwarding to a non-local destination.
Add a regession test uitilizing VIMAGE to check all 20 possible
combinations I could think of.

Obtained from:	David Dolson at Sandvine Incorporated
		(original version for ipfw fwd IPv6 support)
Sponsored by:	Sandvine Incorporated
PR:		bin/117214
MFC after:	4 weeks
Approved by:	re (kib)
2011-08-20 17:05:11 +00:00
jhb
5181cb930b Fix a regression where a rule containing a source port option after a
destination IP would incorrectly display the source port as a destination
port.

Reviewed by:	luigi
Approved by:	re (kib)
MFC after:	1 week
2011-08-17 14:39:45 +00:00
ae
6b5f802b89 Add new rule actions "call" and "return" to ipfw. They make
possible to organize subroutines with rules.

The "call" action saves the current rule number in the internal
stack and rules processing continues from the first rule with
specified number (similar to skipto action). If later a rule with
"return" action is encountered, the processing returns to the first
rule with number of "call" rule saved in the stack plus one or higher.

Submitted by:	Vadim Goncharov
Discussed by:	ipfw@, luigi@
2011-06-29 10:06:58 +00:00
ae
083452d2eb Improve error reporting. Use corresponding error message when file to be
preprocessed is missing. Also suggest to use absolute pathname if -p option
is specified.

PR:             bin/156653
MFC after:      2 weeks
2011-06-29 06:45:44 +00:00
glebius
f235f56e2d Actually, if code had followed style(9), there would be less stupid errors
like the one fixed in r223416.

Noticed by:	julian
2011-06-24 12:55:16 +00:00
glebius
5b5e9b6b99 One more braino from me.
Pointy hat to:	glebius
Submitted by:	Alexander V. Chernikov <melifaro ipfw.ru>
2011-06-22 08:20:01 +00:00
benl
2071e3510a Fix clang warnings.
Approved by:	philip (mentor)
2011-06-18 13:56:33 +00:00
glebius
f405f6d6f8 - Fix my braino in the 220835, when I used strtok(). It isn't
applicable here, since modifies the string. Switch to strchr().
- Restore support for undocumented optional parameters of
  redir_port and redir_proto, that were disabled in 220835.
- While here, change !isalpha() checks on optinal parameters
  for isdigit().

Submitted by:	Alexander V. Chernikov <melifaro ipfw.ru>
PR:		kern/143653
2011-06-17 12:12:52 +00:00
ae
a060389e5b Implement "global" mode for ipfw nat. It is similar to natd(8)
"globalport" option for multiple NAT instances.

If ipfw rule contains "global" keyword instead of nat_number, then
for each outgoing packet ipfw_nat looks up translation state in all
configured nat instances. If an entry is found, packet aliased
according to that entry, otherwise packet is passed unchanged.

User can specify "skip_global" option in NAT configuration to exclude
an instance from the lookup in global mode.

PR:		kern/157867
Submitted by:	Alexander V. Chernikov (previous version)
Tested by:	Eugene Grosbein
2011-06-14 13:35:24 +00:00
ae
7b7c6f4e74 Check nat id a bit more strictly. 2011-06-14 13:02:26 +00:00
ae
779a285118 Initialize co.use_set variable before parsing each new rule.
PR:		bin/134975
MFC after:	2 weeks
2011-06-06 11:10:38 +00:00
ae
32b65a86d0 Increase buffer size for the command line.
PR:		bin/125370
Submitted by:	sem
MFC after:	2 weeks
2011-06-06 10:52:26 +00:00
ae
5251d374e6 Add tablearg support for ipfw setfib.
PR:		kern/156410
MFC after:	2 weeks
2011-05-30 05:37:26 +00:00
pluknet
6a8a361b92 mdoc:
- use a proper macro for interface name ipfw0.
- add missing section number for bpf cross reference.
2011-05-17 12:58:19 +00:00
glebius
54d630d4cb Rewrite NAT configuration parser, so that memory allocation size is
calculated dynamically.

PR:		kern/143653
2011-04-19 15:03:12 +00:00
glebius
54ea1a10a5 More whitespace fixes.
Checked with:	md5, diff -x -w
2011-04-18 22:09:03 +00:00
glebius
57baf3da41 Whitespace fixes.
Checked with:	md5, diff -w
2011-04-18 21:18:22 +00:00
luigi
e7ccc85b8f The first customer of the SO_USER_COOKIE option:
the "sockarg" ipfw option matches packets associated to
a local socket and with a non-zero so_user_cookie value.
The value is made available as tablearg, so it can be used
as a skipto target or pipe number in ipfw/dummynet rules.

Code by Paul Joe, manpage by me.

Submitted by:	Paul Joe
MFC after:	1 week
2010-11-12 13:05:17 +00:00
uqs
62105f8979 mdoc: make pages render with mandoc
It's a bit more pedantic regarding .Bl list elements. This has an added
benefit of unbreaking the ipfw(8) manpage, where groff was silently
skipping one list element.
2010-10-21 12:27:13 +00:00
luigi
67f7009c39 document logging through bpf 2010-10-13 22:07:57 +00:00
uqs
8ae3afcfad mdoc: drop redundant .Pp and .LP calls
They have no effect when coming in pairs, or before .Bl/.Bd
2010-10-08 12:40:16 +00:00
brucec
76d7244728 Fix incorrect usage of 'assure' and 'insure'.
Approved by: rrs (mentor)
2010-08-28 16:32:01 +00:00
des
3fcf5283af expand_number(3) takes a uint64_t * now.
MFC after:	3 weeks
2010-08-19 11:19:21 +00:00
joel
dd1fff9bcb Fix typos, spelling, formatting and mdoc mistakes found by Nobuyuki while
translating these manual pages.  Minor corrections by me.

Submitted by:	Nobuyuki Koganemaru <n-kogane@syd.odn.ne.jp>
2010-08-16 15:18:30 +00:00
glebius
4261fd06bd Document that the "ngtee" action no longer accepts packet, and
thus don't depend on one_pass flag anymore.

This is a POLA violation, but it is quite difficult to restore
the old behavior with new code. Also, the new behavior matches
behavior of the older "tee" action, and this is more intuitive.
2010-07-27 14:31:39 +00:00
luigi
696b5f7a91 better printing of headers when listing flows 2010-07-15 14:34:56 +00:00
luigi
bb53438218 fix 64-bit build
Reported by:	Robert Noland
2010-04-19 16:35:47 +00:00
luigi
063c00f467 Slightly different handling of printf/snprintf for unaligned uint64_t,
which should improve readability, and also to ease the port to
platforms that do not support %llu

MFC after:	3 days
2010-04-19 15:11:45 +00:00
luigi
32deede1ae fix a buffer overflow with large (100k+) number of input lines.
MFC after:	3 days
2010-04-12 08:27:53 +00:00
ume
69c698c974 Set net.inet6.ip6.fw.enable as well. 2010-04-06 12:28:08 +00:00
luigi
45fd7e5066 fix another bug in "ipfw set N ..."
Submitted by:	Marcin Wisnicki
2010-03-24 23:06:16 +00:00
gavin
9cc3706fd5 Tweak language to make one point potentially clearer for non-native spekers
PR:		bin/121424
Submitted by:	"Julian H. Stacey" <jhs berklix.org>
2010-03-20 14:42:16 +00:00
luigi
ea650b19a1 accept lower case m as a synonym for Mega (bit/s or bytes/s). 2010-03-15 18:26:09 +00:00
luigi
b958ac2aee print correctly commands of the form
ipfw add 100 allow ip from { 1.2.3.4 or 5.6.7.8 }

(note that the above example could be better written as

	ipfw add 100 allow dst-ip 1.2.3.4,5.6.7.8

Submitted by:	Riccardo Panicucci
2010-03-15 18:20:51 +00:00
luigi
3c242d0b3e + implement (two lines) the kernel side of 'lookup dscp N' to use the
dscp as a search key in table lookups;

+ (re)implement a sysctl variable to control the expire frequency of
  pipes and queues when they become empty;

+ add 'queue number' as optional part of the flow_id. This can be
  enabled with the command

        queue X config mask queue ...

  and makes it possible to support priority-based schedulers, where
  packets should be grouped according to the priority and not some
  fields in the 5-tuple.
  This is implemented as follows:
  - redefine a field in the ipfw_flow_id (in sys/netinet/ip_fw.h) but
    without changing the size or shape of the structure, so there are
    no ABI changes. On passing, also document how other fields are
    used, and remove some useless assignments in ip_fw2.c

  - implement small changes in the userland code to set/read the field;

  - revise the functions in ip_dummynet.c to manipulate masks so they
    also handle the additional field;

There are no ABI changes in this commit.
2010-03-15 17:14:27 +00:00
luigi
3a68724891 Implement "lookup dscp N" which does a lookup of the DSCP (top 6 bits
of ip->ip_tos) in a table. This can be useful to direct traffic to
different pipes/queues according to the DSCP of the packet, as follows:

    ipfw add 100 queue tablearg lookup dscp 3 // table 3 maps dscp->queue

This change is a no-op (but harmless) until the two-line kernel
side is committed, which will happen shortly.
2010-03-15 15:43:35 +00:00
luigi
0d5da117aa implement listing of a subset of pipes/queues/schedulers.
The filtering of the output is done in the kernel instead of userland
to reduce the amount of data transfered.
2010-03-11 22:42:33 +00:00
luigi
d3ede2e999 add back DPADD (removed by mistake in a previous commit) 2010-03-08 14:43:55 +00:00
luigi
859f5adfa0 more documentation on new dummynet features. 2010-03-05 14:13:58 +00:00
luigi
7053937fa6 make the listing of queues/pipes/schedulers handle the case of
data size increasing while we fetch the info.
2010-03-04 16:56:36 +00:00
luigi
b486493f31 fix handling of sets 2010-03-04 16:55:32 +00:00
luigi
9b5097a55e reduce diffs with the cross-platform version (windows needs
some extra initialization)
2010-03-04 16:54:56 +00:00
luigi
302fda42a4 remove stale comment 2010-03-04 16:08:51 +00:00
luigi
5ceeac4aa8 Bring in the most recent version of ipfw and dummynet, developed
and tested over the past two months in the ipfw3-head branch.  This
also happens to be the same code available in the Linux and Windows
ports of ipfw and dummynet.

The major enhancement is a completely restructured version of
dummynet, with support for different packet scheduling algorithms
(loadable at runtime), faster queue/pipe lookup, and a much cleaner
internal architecture and kernel/userland ABI which simplifies
future extensions.

In addition to the existing schedulers (FIFO and WF2Q+), we include
a Deficit Round Robin (DRR or RR for brevity) scheduler, and a new,
very fast version of WF2Q+ called QFQ.

Some test code is also present (in sys/netinet/ipfw/test) that
lets you build and test schedulers in userland.

Also, we have added a compatibility layer that understands requests
from the RELENG_7 and RELENG_8 versions of the /sbin/ipfw binaries,
and replies correctly (at least, it does its best; sometimes you
just cannot tell who sent the request and how to answer).
The compatibility layer should make it possible to MFC this code in a
relatively short time.

Some minor glitches (e.g. handling of ipfw set enable/disable,
and a workaround for a bug in RELENG_7's /sbin/ipfw) will be
fixed with separate commits.

CREDITS:
This work has been partly supported by the ONELAB2 project, and
mostly developed by Riccardo Panicucci and myself.
The code for the qfq scheduler is mostly from Fabio Checconi,
and Marta Carbone and Francesco Magno have helped with testing,
debugging and some bug fixes.
2010-03-02 17:40:48 +00:00
ru
4d27ff91d0 Fixed dependencies (make checkdpadd). 2010-02-25 20:24:19 +00:00
luigi
84d17b9dde implement a new match option,
lookup {dst-ip|src-ip|dst-port|src-port|uid|jail} N

which searches the specified field in table N and sets tablearg
accordingly.
With dst-ip or src-ip the option replicates two existing options.
When used with other arguments, the option can be useful to
quickly dispatch traffic based on other fields.

Work supported by the Onelab project.

MFC after:	1 week
2009-12-15 09:46:27 +00:00
luigi
507718c519 fix the indentation for addr: values
MFC after:	3 days
2009-12-15 09:32:35 +00:00
luigi
d0b8e66dba restore setting of sin_len (was removed in 1.146 last february) as
it seems that now it is necessary for 'forward' to work outside lo0.
The bug (and fix) was reported on 8.0. This patch probably applies
to RELENG_7 as well.
It seems that 'pf' has a similar bug.

Submitted by:	Lytochkin Boris
MFC after:	3 days
2009-12-06 18:04:26 +00:00
luigi
62461e96f5 fix argument type in the call to expand_number
Submitted by:	gcc 4.3
MFC after:	3 days
2009-12-04 14:18:30 +00:00
luigi
98a49a6613 use qsort_r instead of heapsort;
staticize two functions.

MFC after:	3 days
2009-12-03 12:23:48 +00:00
netchild
10efa8a238 Fix minor resource leak in a function.
Reviewed by:	luigi
MFC after:	1 week
2009-11-21 10:46:49 +00:00
brueffer
2100141d0b Fix setfib(1) section number.
PR:		133765
Submitted by:	Konstantin Zolotukhin <erebus@gorodok.net>
MFC after:	3 days
2009-09-18 14:17:00 +00:00
oleg
0c8702bb1e - 'burst' description rewritten.
Submitted by:	Ben Kaduk
Approved by:	re (kib)
2009-06-26 19:49:06 +00:00
maxim
c26bbc521d o Kill grammar nits.
PR:		docs/136061
Submitted by:	Ben Kaduk
MFC after:	1 week
2009-06-26 05:09:00 +00:00
oleg
11197296ca - fix dummynet 'fast' mode for WF2Q case.
- fix printing of pipe profile data.
- introduce new pipe parameter: 'burst' - how much data can be sent through
  pipe bypassing bandwidth limit.
2009-06-24 22:57:07 +00:00
luigi
bf5db0adae Permit the specification of bandwidth values within
"profile" files (bandwidth is mandatory when using a
profile, so it makes sense to have everything in one place).

Update the manpage accordingly.

Submitted by:	Marta Carbone
2009-06-08 14:32:29 +00:00
luigi
d90175e4d6 add a missing format in a printf
Detected building with gcc 4.3.3

MFC after:	3 days
2009-06-08 10:53:18 +00:00
luigi
78a4bbf287 Several ipfw options and actions use a 16-bit argument to indicate
pipes, queues, tags, rule numbers and so on.
These are all different namespaces, and the only thing they have in
common is the fact they use a 16-bit slot to represent the argument.

There is some confusion in the code, mostly for historical reasons,
on how the values 0 and 65535 should be used. At the moment, 0 is
forbidden almost everywhere, while 65535 is used to represent a
'tablearg' argument, i.e. the result of the most recent table() lookup.

For now, try to use explicit constants for the min and max allowed
values, and do not overload the default rule number for that.

Also, make the MTAG_IPFW declaration only visible to the kernel.

NOTE: I think the issue needs to be revisited before 8.0 is out:
the 2^16 namespace limit for rule numbers and pipe/queue is
annoying, and we can easily bump the limit to 2^32 which gives
a lot more flexibility in partitioning the namespace.

MFC after:	5 days
2009-06-05 16:16:07 +00:00
luigi
2e85daee53 remove a printf that was only useful for debugging.
MFC after:	3 days
2009-06-05 13:11:34 +00:00
trhodes
c9f2c65c9f Kill hard sentence break added in the previous revision. 2009-04-11 08:52:02 +00:00
luigi
5c7675fccb Add emulation of delay profiles, which lets you model various
types of MAC overheads such as preambles, link level retransmissions
and more.

Note- this commit changes the userland/kernel ABI for pipes
(but not for ordinary firewall rules) so you need to rebuild
kernel and /sbin/ipfw to use dummynet features.

Please check the manpage for details on the new feature.

The MFC would be trivial but it breaks the ABI, so it will
be postponed until after 7.2 is released.

Interested users are welcome to apply the patch manually
to their RELENG_7 tree.

Work supported by the European Commission, Projects Onelab and
Onelab2 (contract 224263).
2009-04-09 12:46:00 +00:00
maxim
d45acb8459 o Grammar. 2009-04-08 17:46:45 +00:00
luigi
7543af0746 Various cleanup of text, moving a couple of paragraphs
above to avoid referencing undefined terms (humans are not compilers
but still care about these things).

Change some .Sh to .Ss to better reflect the structure of the text.

No new content.
2009-04-08 15:18:21 +00:00
trhodes
263a066905 Remove contractions, reword a sentence to avoid a double negative,
and bump document date for previous change.

OKed by:	piso
2009-04-07 13:51:41 +00:00
piso
30d15f06f1 Improve a bit reass documentation:
-document fragment handling sysctls
-mention some caveats about fragments handling (and to deal with it)
2009-04-05 15:24:27 +00:00
piso
c9b4c10995 Implement an ipfw action to reassemble ip packets: reass. 2009-04-01 20:23:47 +00:00
brueffer
4bb1b51862 Mdoc style, spelling, grammar and wording fixes. This manpage needs more work. 2009-03-19 10:42:07 +00:00
luigi
359ccc0fed move a variable declaration to the beginning of the block
(unfortunately, it is far away; we need to pack this code in
a better way).
2009-03-05 08:08:09 +00:00
luigi
b29749721a remove some signed/unsigned and one const/!const warning 2009-03-05 08:01:58 +00:00
luigi
d5c4f3cf08 mark a function static, as it is 2009-03-05 08:01:19 +00:00
piso
d34fad2923 Add SCTP NAT support.
Submitted by: CAIA (http://caia.swin.edu.au)
2009-02-07 18:49:42 +00:00
luigi
af5756126e Explain that we assume AF_INET and only use the addr and port field
from a struct sockaddr_in, so there is no need to initialize sin_len
2009-02-02 11:02:19 +00:00
luigi
bec0413580 remove duplicate #include 2009-02-02 10:58:05 +00:00
luigi
23001c70f6 put the altq-related functions into a separate file.
Minor cleanup of the includes used by the various source files,
including annotations of why certain headers are used.
2009-02-01 16:00:49 +00:00
luigi
427f135f75 Avoid the use of duplicated typedefs -- see the comment for details. 2009-01-28 11:43:12 +00:00
luigi
5f74942998 fix printing of uint64_t values, so we can use WARNS=2 2009-01-27 20:26:45 +00:00