linux.git/net/ipv4/netfilter/Makefile, branch v4.20

netfilter: conntrack: remove l3proto abstraction

2018-07-17T13:27:49+00:00

This unifies ipv4 and ipv6 protocol trackers and removes the l3proto
abstraction.

This gets rid of all l3proto indirect calls and the need to do
a lookup on the function to call for l3 demux.

It increases module size by only a small amount (12kbyte), so this reduces
size because nf_conntrack.ko is useless without either nf_conntrack_ipv4
or nf_conntrack_ipv6 module.

before:
   text    data     bss     dec     hex filename
   7357    1088       0    8445    20fd nf_conntrack_ipv4.ko
   7405    1084       4    8493    212d nf_conntrack_ipv6.ko
  72614   13689     236   86539   1520b nf_conntrack.ko
 19K nf_conntrack_ipv4.ko
 19K nf_conntrack_ipv6.ko
179K nf_conntrack.ko

after:
   text    data     bss     dec     hex filename
  79277   13937     236   93450   16d0a nf_conntrack.ko
  191K nf_conntrack.ko

Signed-off-by: Florian Westphal 
Signed-off-by: Pablo Neira Ayuso

netfilter: Libify xt_TPROXY

2018-06-02T22:02:05+00:00

The extracted functions will likely be usefull to implement tproxy
support in nf_tables.

Extrancted functions:
	- nf_tproxy_sk_is_transparent
	- nf_tproxy_laddr4
	- nf_tproxy_handle_time_wait4
	- nf_tproxy_get_sock_v4
	- nf_tproxy_laddr6
	- nf_tproxy_handle_time_wait6
	- nf_tproxy_get_sock_v6

(nf_)tproxy_handle_time_wait6 also needed some refactor as its current
implementation was xtables-specific.

Signed-off-by: Máté Eckl 
Signed-off-by: Pablo Neira Ayuso

netfilter: nat: merge ipv4/ipv6 masquerade code into main nat module

2018-05-28T22:25:36+00:00

Instead of using extra modules for these, turn the config options into
an implicit dependency that adds masq feature to the protocol specific nf_nat module.

before:
   text    data     bss     dec     hex filename
   2001     860       4    2865     b31 net/ipv4/netfilter/nf_nat_masquerade_ipv4.ko
   5579     780       2    6361    18d9 net/ipv4/netfilter/nf_nat_ipv4.ko
   2860     836       8    3704     e78 net/ipv6/netfilter/nf_nat_masquerade_ipv6.ko
   6648     780       2    7430    1d06 net/ipv6/netfilter/nf_nat_ipv6.ko

after:
   text    data     bss     dec     hex filename
   7245     872       8    8125    1fbd net/ipv4/netfilter/nf_nat_ipv4.ko
   9165     848      12   10025    2729 net/ipv6/netfilter/nf_nat_ipv6.ko

Signed-off-by: Florian Westphal 
Signed-off-by: Pablo Neira Ayuso

kbuild: rename -asn1.[ch] to .asn1.[ch]

2018-04-07T10:04:02+00:00

Our convention is to distinguish file types by suffixes with a period
as a separator.

*-asn1.[ch] is a different pattern from other generated sources such
as *.lex.c, *.tab.[ch], *.dtb.S, etc.  More confusing, files with
'-asn1.[ch]' are generated files, but '_asn1.[ch]' are checked-in
files:
  net/netfilter/nf_conntrack_h323_asn1.c
  include/linux/netfilter/nf_conntrack_h323_asn1.h
  include/linux/sunrpc/gss_asn1.h

Rename generated files to *.asn1.[ch] for consistency.

Signed-off-by: Masahiro Yamada

kbuild: clean up *-asn1.[ch] patterns from top-level Makefile

2018-04-07T10:04:02+00:00

Clean up these patterns from the top Makefile to omit 'clean-files'
in each Makefile.

Signed-off-by: Masahiro Yamada

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2018-04-01T23:49:34+00:00

Minor conflicts in drivers/net/ethernet/mellanox/mlx5/core/en_rep.c,
we had some overlapping changes:

1) In 'net' MLX5E_PARAMS_LOG_{SQ,RQ}_SIZE -->
   MLX5E_REP_PARAMS_LOG_{SQ,RQ}_SIZE

2) In 'net-next' params->log_rq_size is renamed to be
   params->log_rq_mtu_frames.

3) In 'net-next' params->hard_mtu is added.

Signed-off-by: David S. Miller

netfilter: nf_tables: build-in filter chain type

2018-03-30T09:29:19+00:00

One module per supported filter chain family type takes too much memory
for very little code - too much modularization - place all chain filter
definitions in one single file.

Signed-off-by: Pablo Neira Ayuso

netfilter: nf_nat_snmp_basic: add correct dependency to Makefile

2018-03-29T00:42:32+00:00

nf_nat_snmp_basic_main.c includes a generated header, but the
necessary dependency is missing in Makefile. This could cause
build error in parallel building.

Remove a weird line, and add a correct one.

Fixes: cc2d58634e0f ("netfilter: nf_nat_snmp_basic: use asn1 decoder library")
Reported-by: Stephen Rothwell 
Signed-off-by: Masahiro Yamada

netfilter: nf_nat_snmp_basic: use asn1 decoder library

2018-01-19T12:59:07+00:00

The basic SNMP ALG parse snmp ASN.1 payload
however, since 2012 linux kernel provide ASN.1 decoder library.
If we use ASN.1 decoder in the /lib/asn1_decoder.c, we can remove
about 1000 line of ASN.1 parsing routine.

To use asn1_decoder.c, we should write mib file(nf_nat_snmp_basic.asn1)
then /script/asn1_compiler.c makes *-asn1.c and *-asn1.h file
at the compiletime.(nf_nat_snmp_basic-asn1.c, nf_nat_snmp_basic-asn1.h)
The nf_nat_snmp_basic.asn1 is made by RFC1155, RFC1157, RFC1902, RFC1905,
RFC2578, RFC3416. of course that mib file supports only the basic SNMP ALG.

Previous SNMP ALG mangles only first octet of IPv4 address.
but after this patch, the SNMP ALG mangles whole IPv4 Address.
And SNMPv3 is not supported.

I tested with snmp commands such ans snmpd, snmpwalk, snmptrap.

Signed-off-by: Taehee Yoo 
Signed-off-by: Pablo Neira Ayuso

netfilter: flow table support for IPv4

2018-01-08T17:11:08+00:00

This patch adds the IPv4 flow table type, that implements the datapath
flow table to forward IPv4 traffic. Rationale is:

1) Look up for the packet in the flow table, from the ingress hook.
2) If there's a hit, decrement ttl and pass it on to the neighbour layer
   for transmission.
3) If there's a miss, packet is passed up to the classic forwarding
   path.

This patch also supports layer 3 source and destination NAT.

Signed-off-by: Pablo Neira Ayuso