2005-04-16 22:20:36 +00:00
|
|
|
#
|
|
|
|
|
# Makefile for the netfilter modules on top of IPv4.
|
|
|
|
|
#
|
|
|
|
|
|
2007-01-26 09:06:47 +00:00
|
|
|
# objects for l3 independent conntrack
|
2010-11-21 15:03:18 +00:00
|
|
|
nf_conntrack_ipv4-y := nf_conntrack_l3proto_ipv4.o nf_conntrack_proto_icmp.o
|
2007-01-26 09:06:47 +00:00
|
|
|
ifeq ($(CONFIG_NF_CONNTRACK_PROC_COMPAT),y)
|
|
|
|
|
ifeq ($(CONFIG_PROC_FS),y)
|
|
|
|
|
nf_conntrack_ipv4-objs += nf_conntrack_l3proto_ipv4_compat.o
|
|
|
|
|
endif
|
|
|
|
|
endif
|
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
# connection tracking
|
2007-01-26 09:06:47 +00:00
|
|
|
obj-$(CONFIG_NF_CONNTRACK_IPV4) += nf_conntrack_ipv4.o
|
|
|
|
|
|
2012-08-26 17:14:06 +00:00
|
|
|
nf_nat_ipv4-y := nf_nat_l3proto_ipv4.o nf_nat_proto_icmp.o
|
|
|
|
|
obj-$(CONFIG_NF_NAT_IPV4) += nf_nat_ipv4.o
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2008-10-08 09:35:12 +00:00
|
|
|
# defrag
|
|
|
|
|
obj-$(CONFIG_NF_DEFRAG_IPV4) += nf_defrag_ipv4.o
|
|
|
|
|
|
2014-06-19 18:47:14 +00:00
|
|
|
# logging
|
2014-06-20 18:36:23 +00:00
|
|
|
obj-$(CONFIG_NF_LOG_ARP) += nf_log_arp.o
|
2014-06-19 18:47:14 +00:00
|
|
|
obj-$(CONFIG_NF_LOG_IPV4) += nf_log_ipv4.o
|
|
|
|
|
|
2006-12-03 06:07:44 +00:00
|
|
|
# NAT helpers (nf_conntrack)
|
2006-12-03 06:08:46 +00:00
|
|
|
obj-$(CONFIG_NF_NAT_H323) += nf_nat_h323.o
|
2006-12-03 06:09:41 +00:00
|
|
|
obj-$(CONFIG_NF_NAT_PPTP) += nf_nat_pptp.o
|
2006-12-03 06:10:34 +00:00
|
|
|
obj-$(CONFIG_NF_NAT_SNMP_BASIC) += nf_nat_snmp_basic.o
|
2006-12-03 06:09:41 +00:00
|
|
|
|
|
|
|
|
# NAT protocols (nf_nat)
|
|
|
|
|
obj-$(CONFIG_NF_NAT_PROTO_GRE) += nf_nat_proto_gre.o
|
2006-12-03 06:07:44 +00:00
|
|
|
|
netfilter: add nftables
This patch adds nftables which is the intended successor of iptables.
This packet filtering framework reuses the existing netfilter hooks,
the connection tracking system, the NAT subsystem, the transparent
proxying engine, the logging infrastructure and the userspace packet
queueing facilities.
In a nutshell, nftables provides a pseudo-state machine with 4 general
purpose registers of 128 bits and 1 specific purpose register to store
verdicts. This pseudo-machine comes with an extensible instruction set,
a.k.a. "expressions" in the nftables jargon. The expressions included
in this patch provide the basic functionality, they are:
* bitwise: to perform bitwise operations.
* byteorder: to change from host/network endianess.
* cmp: to compare data with the content of the registers.
* counter: to enable counters on rules.
* ct: to store conntrack keys into register.
* exthdr: to match IPv6 extension headers.
* immediate: to load data into registers.
* limit: to limit matching based on packet rate.
* log: to log packets.
* meta: to match metainformation that usually comes with the skbuff.
* nat: to perform Network Address Translation.
* payload: to fetch data from the packet payload and store it into
registers.
* reject (IPv4 only): to explicitly close connection, eg. TCP RST.
Using this instruction-set, the userspace utility 'nft' can transform
the rules expressed in human-readable text representation (using a
new syntax, inspired by tcpdump) to nftables bytecode.
nftables also inherits the table, chain and rule objects from
iptables, but in a more configurable way, and it also includes the
original datatype-agnostic set infrastructure with mapping support.
This set infrastructure is enhanced in the follow up patch (netfilter:
nf_tables: add netlink set API).
This patch includes the following components:
* the netlink API: net/netfilter/nf_tables_api.c and
include/uapi/netfilter/nf_tables.h
* the packet filter core: net/netfilter/nf_tables_core.c
* the expressions (described above): net/netfilter/nft_*.c
* the filter tables: arp, IPv4, IPv6 and bridge:
net/ipv4/netfilter/nf_tables_ipv4.c
net/ipv6/netfilter/nf_tables_ipv6.c
net/ipv4/netfilter/nf_tables_arp.c
net/bridge/netfilter/nf_tables_bridge.c
* the NAT table (IPv4 only):
net/ipv4/netfilter/nf_table_nat_ipv4.c
* the route table (similar to mangle):
net/ipv4/netfilter/nf_table_route_ipv4.c
net/ipv6/netfilter/nf_table_route_ipv6.c
* internal definitions under:
include/net/netfilter/nf_tables.h
include/net/netfilter/nf_tables_core.h
* It also includes an skeleton expression:
net/netfilter/nft_expr_template.c
and the preliminary implementation of the meta target
net/netfilter/nft_meta_target.c
It also includes a change in struct nf_hook_ops to add a new
pointer to store private data to the hook, that is used to store
the rule list per chain.
This patch is based on the patch from Patrick McHardy, plus merged
accumulated cleanups, fixes and small enhancements to the nftables
code that has been done since 2009, which are:
From Patrick McHardy:
* nf_tables: adjust netlink handler function signatures
* nf_tables: only retry table lookup after successful table module load
* nf_tables: fix event notification echo and avoid unnecessary messages
* nft_ct: add l3proto support
* nf_tables: pass expression context to nft_validate_data_load()
* nf_tables: remove redundant definition
* nft_ct: fix maxattr initialization
* nf_tables: fix invalid event type in nf_tables_getrule()
* nf_tables: simplify nft_data_init() usage
* nf_tables: build in more core modules
* nf_tables: fix double lookup expression unregistation
* nf_tables: move expression initialization to nf_tables_core.c
* nf_tables: build in payload module
* nf_tables: use NFPROTO constants
* nf_tables: rename pid variables to portid
* nf_tables: save 48 bits per rule
* nf_tables: introduce chain rename
* nf_tables: check for duplicate names on chain rename
* nf_tables: remove ability to specify handles for new rules
* nf_tables: return error for rule change request
* nf_tables: return error for NLM_F_REPLACE without rule handle
* nf_tables: include NLM_F_APPEND/NLM_F_REPLACE flags in rule notification
* nf_tables: fix NLM_F_MULTI usage in netlink notifications
* nf_tables: include NLM_F_APPEND in rule dumps
From Pablo Neira Ayuso:
* nf_tables: fix stack overflow in nf_tables_newrule
* nf_tables: nft_ct: fix compilation warning
* nf_tables: nft_ct: fix crash with invalid packets
* nft_log: group and qthreshold are 2^16
* nf_tables: nft_meta: fix socket uid,gid handling
* nft_counter: allow to restore counters
* nf_tables: fix module autoload
* nf_tables: allow to remove all rules placed in one chain
* nf_tables: use 64-bits rule handle instead of 16-bits
* nf_tables: fix chain after rule deletion
* nf_tables: improve deletion performance
* nf_tables: add missing code in route chain type
* nf_tables: rise maximum number of expressions from 12 to 128
* nf_tables: don't delete table if in use
* nf_tables: fix basechain release
From Tomasz Bursztyka:
* nf_tables: Add support for changing users chain's name
* nf_tables: Change chain's name to be fixed sized
* nf_tables: Add support for replacing a rule by another one
* nf_tables: Update uapi nftables netlink header documentation
From Florian Westphal:
* nft_log: group is u16, snaplen u32
From Phil Oester:
* nf_tables: operational limit match
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-10-14 09:00:02 +00:00
|
|
|
obj-$(CONFIG_NF_TABLES_IPV4) += nf_tables_ipv4.o
|
2013-10-10 21:21:26 +00:00
|
|
|
obj-$(CONFIG_NFT_CHAIN_ROUTE_IPV4) += nft_chain_route_ipv4.o
|
|
|
|
|
obj-$(CONFIG_NFT_CHAIN_NAT_IPV4) += nft_chain_nat_ipv4.o
|
2014-02-05 15:03:38 +00:00
|
|
|
obj-$(CONFIG_NFT_REJECT_IPV4) += nft_reject_ipv4.o
|
2013-10-07 20:53:08 +00:00
|
|
|
obj-$(CONFIG_NF_TABLES_ARP) += nf_tables_arp.o
|
netfilter: add nftables
This patch adds nftables which is the intended successor of iptables.
This packet filtering framework reuses the existing netfilter hooks,
the connection tracking system, the NAT subsystem, the transparent
proxying engine, the logging infrastructure and the userspace packet
queueing facilities.
In a nutshell, nftables provides a pseudo-state machine with 4 general
purpose registers of 128 bits and 1 specific purpose register to store
verdicts. This pseudo-machine comes with an extensible instruction set,
a.k.a. "expressions" in the nftables jargon. The expressions included
in this patch provide the basic functionality, they are:
* bitwise: to perform bitwise operations.
* byteorder: to change from host/network endianess.
* cmp: to compare data with the content of the registers.
* counter: to enable counters on rules.
* ct: to store conntrack keys into register.
* exthdr: to match IPv6 extension headers.
* immediate: to load data into registers.
* limit: to limit matching based on packet rate.
* log: to log packets.
* meta: to match metainformation that usually comes with the skbuff.
* nat: to perform Network Address Translation.
* payload: to fetch data from the packet payload and store it into
registers.
* reject (IPv4 only): to explicitly close connection, eg. TCP RST.
Using this instruction-set, the userspace utility 'nft' can transform
the rules expressed in human-readable text representation (using a
new syntax, inspired by tcpdump) to nftables bytecode.
nftables also inherits the table, chain and rule objects from
iptables, but in a more configurable way, and it also includes the
original datatype-agnostic set infrastructure with mapping support.
This set infrastructure is enhanced in the follow up patch (netfilter:
nf_tables: add netlink set API).
This patch includes the following components:
* the netlink API: net/netfilter/nf_tables_api.c and
include/uapi/netfilter/nf_tables.h
* the packet filter core: net/netfilter/nf_tables_core.c
* the expressions (described above): net/netfilter/nft_*.c
* the filter tables: arp, IPv4, IPv6 and bridge:
net/ipv4/netfilter/nf_tables_ipv4.c
net/ipv6/netfilter/nf_tables_ipv6.c
net/ipv4/netfilter/nf_tables_arp.c
net/bridge/netfilter/nf_tables_bridge.c
* the NAT table (IPv4 only):
net/ipv4/netfilter/nf_table_nat_ipv4.c
* the route table (similar to mangle):
net/ipv4/netfilter/nf_table_route_ipv4.c
net/ipv6/netfilter/nf_table_route_ipv6.c
* internal definitions under:
include/net/netfilter/nf_tables.h
include/net/netfilter/nf_tables_core.h
* It also includes an skeleton expression:
net/netfilter/nft_expr_template.c
and the preliminary implementation of the meta target
net/netfilter/nft_meta_target.c
It also includes a change in struct nf_hook_ops to add a new
pointer to store private data to the hook, that is used to store
the rule list per chain.
This patch is based on the patch from Patrick McHardy, plus merged
accumulated cleanups, fixes and small enhancements to the nftables
code that has been done since 2009, which are:
From Patrick McHardy:
* nf_tables: adjust netlink handler function signatures
* nf_tables: only retry table lookup after successful table module load
* nf_tables: fix event notification echo and avoid unnecessary messages
* nft_ct: add l3proto support
* nf_tables: pass expression context to nft_validate_data_load()
* nf_tables: remove redundant definition
* nft_ct: fix maxattr initialization
* nf_tables: fix invalid event type in nf_tables_getrule()
* nf_tables: simplify nft_data_init() usage
* nf_tables: build in more core modules
* nf_tables: fix double lookup expression unregistation
* nf_tables: move expression initialization to nf_tables_core.c
* nf_tables: build in payload module
* nf_tables: use NFPROTO constants
* nf_tables: rename pid variables to portid
* nf_tables: save 48 bits per rule
* nf_tables: introduce chain rename
* nf_tables: check for duplicate names on chain rename
* nf_tables: remove ability to specify handles for new rules
* nf_tables: return error for rule change request
* nf_tables: return error for NLM_F_REPLACE without rule handle
* nf_tables: include NLM_F_APPEND/NLM_F_REPLACE flags in rule notification
* nf_tables: fix NLM_F_MULTI usage in netlink notifications
* nf_tables: include NLM_F_APPEND in rule dumps
From Pablo Neira Ayuso:
* nf_tables: fix stack overflow in nf_tables_newrule
* nf_tables: nft_ct: fix compilation warning
* nf_tables: nft_ct: fix crash with invalid packets
* nft_log: group and qthreshold are 2^16
* nf_tables: nft_meta: fix socket uid,gid handling
* nft_counter: allow to restore counters
* nf_tables: fix module autoload
* nf_tables: allow to remove all rules placed in one chain
* nf_tables: use 64-bits rule handle instead of 16-bits
* nf_tables: fix chain after rule deletion
* nf_tables: improve deletion performance
* nf_tables: add missing code in route chain type
* nf_tables: rise maximum number of expressions from 12 to 128
* nf_tables: don't delete table if in use
* nf_tables: fix basechain release
From Tomasz Bursztyka:
* nf_tables: Add support for changing users chain's name
* nf_tables: Change chain's name to be fixed sized
* nf_tables: Add support for replacing a rule by another one
* nf_tables: Update uapi nftables netlink header documentation
From Florian Westphal:
* nft_log: group is u16, snaplen u32
From Phil Oester:
* nf_tables: operational limit match
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-10-14 09:00:02 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
# generic IP tables
|
|
|
|
|
obj-$(CONFIG_IP_NF_IPTABLES) += ip_tables.o
|
|
|
|
|
|
|
|
|
|
# the three instances of ip_tables
|
|
|
|
|
obj-$(CONFIG_IP_NF_FILTER) += iptable_filter.o
|
|
|
|
|
obj-$(CONFIG_IP_NF_MANGLE) += iptable_mangle.o
|
2012-08-26 17:14:06 +00:00
|
|
|
obj-$(CONFIG_NF_NAT_IPV4) += iptable_nat.o
|
2005-04-16 22:20:36 +00:00
|
|
|
obj-$(CONFIG_IP_NF_RAW) += iptable_raw.o
|
2008-06-09 22:57:24 +00:00
|
|
|
obj-$(CONFIG_IP_NF_SECURITY) += iptable_security.o
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
|
# matches
|
2007-11-06 04:42:54 +00:00
|
|
|
obj-$(CONFIG_IP_NF_MATCH_AH) += ipt_ah.o
|
netfilter: add ipv4 reverse path filter match
This tries to do the same thing as fib_validate_source(), but differs
in several aspects.
The most important difference is that the reverse path filter built into
fib_validate_source uses the oif as iif when performing the reverse
lookup. We do not do this, as the oif is not yet known by the time the
PREROUTING hook is invoked.
We can't wait until FORWARD chain because by the time FORWARD is invoked
ipv4 forward path may have already sent icmp messages is response
to to-be-discarded-via-rpfilter packets.
To avoid the such an additional lookup in PREROUTING, Patrick McHardy
suggested to attach the path information directly in the match
(i.e., just do what the standard ipv4 path does a bit earlier in PREROUTING).
This works, but it also has a few caveats. Most importantly, when using
marks in PREROUTING to re-route traffic based on the nfmark, -m rpfilter
would have to be used after the nfmark has been set; otherwise the nfmark
would have no effect (because the route is already attached).
Another problem would be interaction with -j TPROXY, as this target sets an
nfmark and uses ACCEPT instead of continue, i.e. such a version of
-m rpfilter cannot be used for the initial to-be-intercepted packets.
In case in turns out that the oif is required, we can add Patricks
suggestion with a new match option (e.g. --rpf-use-oif) to keep ruleset
compatibility.
Another difference to current builtin ipv4 rpfilter is that packets subject to ipsec
transformation are not automatically excluded. If you want this, simply
combine -m rpfilter with the policy match.
Packets arriving on loopback interfaces always match.
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-07-04 21:48:10 +00:00
|
|
|
obj-$(CONFIG_IP_NF_MATCH_RPFILTER) += ipt_rpfilter.o
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
|
# targets
|
2007-11-06 04:42:54 +00:00
|
|
|
obj-$(CONFIG_IP_NF_TARGET_CLUSTERIP) += ipt_CLUSTERIP.o
|
2005-04-16 22:20:36 +00:00
|
|
|
obj-$(CONFIG_IP_NF_TARGET_ECN) += ipt_ECN.o
|
|
|
|
|
obj-$(CONFIG_IP_NF_TARGET_MASQUERADE) += ipt_MASQUERADE.o
|
2007-11-06 04:42:54 +00:00
|
|
|
obj-$(CONFIG_IP_NF_TARGET_REJECT) += ipt_REJECT.o
|
2013-08-27 06:50:14 +00:00
|
|
|
obj-$(CONFIG_IP_NF_TARGET_SYNPROXY) += ipt_SYNPROXY.o
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
|
# generic ARP tables
|
|
|
|
|
obj-$(CONFIG_IP_NF_ARPTABLES) += arp_tables.o
|
|
|
|
|
obj-$(CONFIG_IP_NF_ARP_MANGLE) += arpt_mangle.o
|
|
|
|
|
|
|
|
|
|
# just filtering instance of ARP tables for now
|
|
|
|
|
obj-$(CONFIG_IP_NF_ARPFILTER) += arptable_filter.o
|