diff options
| author |   Taehee Yoo <ap420073@gmail.com> | 2018-01-08 00:10:33 +0900 |
|---|---|---|
| committer |   Pablo Neira Ayuso <pablo@netfilter.org> | 2018-01-19 13:59:07 +0100 |
| commit | cc2d58634e0f489d28b5564c05abc69930b4d920 (patch) | |
| tree | 9afca85e29fd84fd8768c162066a3ce8dd2ec3f9 /net/ipv4/netfilter/Makefile | |
| parent | netfilter: nf_nat_snmp_basic: use nf_ct_helper_log (diff) | |
| download | linux-dev-cc2d58634e0f489d28b5564c05abc69930b4d920.tar.xz linux-dev-cc2d58634e0f489d28b5564c05abc69930b4d920.zip | |
netfilter: nf_nat_snmp_basic: use asn1 decoder library
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 <ap420073@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/ipv4/netfilter/Makefile')
| -rw-r--r-- | net/ipv4/netfilter/Makefile | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/ipv4/netfilter/Makefile b/net/ipv4/netfilter/Makefile index 8bb1f0c7a375..2dad20eefd26 100644 --- a/net/ipv4/netfilter/Makefile +++ b/net/ipv4/netfilter/Makefile @@ -27,9 +27,15 @@ obj-$(CONFIG_NF_REJECT_IPV4) += nf_reject_ipv4.o # NAT helpers (nf_conntrack) obj-$(CONFIG_NF_NAT_H323) += nf_nat_h323.o obj-$(CONFIG_NF_NAT_PPTP) += nf_nat_pptp.o + +nf_nat_snmp_basic-y := nf_nat_snmp_basic-asn1.o nf_nat_snmp_basic_main.o +nf_nat_snmp_basic-y : nf_nat_snmp_basic-asn1.h nf_nat_snmp_basic-asn1.c obj-$(CONFIG_NF_NAT_SNMP_BASIC) += nf_nat_snmp_basic.o +clean-files := nf_nat_snmp_basic-asn1.c nf_nat_snmp_basic-asn1.h + obj-$(CONFIG_NF_NAT_MASQUERADE_IPV4) += nf_nat_masquerade_ipv4.o + # NAT protocols (nf_nat) obj-$(CONFIG_NF_NAT_PROTO_GRE) += nf_nat_proto_gre.o |