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iptables: Fix target TRACE issue

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The package kmod-ipt-debug builds the module xt_TRACE, which allows
users to use '-j TRACE' as target in the chain PREROUTING of the table
raw in iptables.

The kernel compilation flag NETFILTER_XT_TARGET_TRACE is also enabled so
that this feature which is implemented deep inside the linux IP stack
(for example in sk_buff) is compiled.

But a strace of iptables -t raw -I PREROUTING -p icmp -j TRACE reveals
that an attempt is made to read /usr/lib/iptables/libxt_TRACE.so, which
fails as this dynamic library is not present on the system.

I created the package iptables-mod-trace which takes care of that, and
target TRACE now works!

https://dev.openwrt.org/ticket/16694
https://dev.openwrt.org/ticket/19661

Signed-off-by: Martin Wetterwald <martin.wetterwald@corp.ovh.com>
[Jo-Philipp Wich: also remove trace extension from builtin extension list
                  and depend on kmod-ipt-raw since its required for rules]
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Tested-by: Enrico Mioso <mrkiko.rs@gmail.com>
This commit is contained in:
Martin Wetterwald 2017-01-12 15:06:00 +01:00 committed by Jo-Philipp Wich
parent 56342ee2bc
commit 378e1a4858
2 changed files with 15 additions and 1 deletions
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1
include/netfilter.mk
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@ -366,7 +366,6 @@ IPT_BUILTIN += $(IPT_NAT_EXTRA-y)
IPT_BUILTIN += $(NF_NATHELPER-y)
IPT_BUILTIN += $(NF_NATHELPER_EXTRA-y)
IPT_BUILTIN += $(IPT_ULOG-y)
IPT_BUILTIN += $(IPT_DEBUG-y)
IPT_BUILTIN += $(IPT_TPROXY-y)
IPT_BUILTIN += $(NFNETLINK-y)
IPT_BUILTIN += $(NFNETLINK_LOG-y)

15
package/network/utils/iptables/Makefile
View file

@ -216,6 +216,20 @@ define Package/iptables-mod-nflog/description
endef
define Package/iptables-mod-trace
$(call Package/iptables/Module, +kmod-ipt-debug +kmod-ipt-raw)
TITLE:=Netfilter TRACE target
endef
define Package/iptables-mod-trace/description
iptables extension for TRACE target
Includes:
- libxt_TRACE
endef
define Package/iptables-mod-nfqueue
$(call Package/iptables/Module, +kmod-nfnetlink-queue +kmod-ipt-nfqueue)
TITLE:=Netfilter NFQUEUE target
@ -584,6 +598,7 @@ $(eval $(call BuildPlugin,iptables-mod-tproxy,$(IPT_TPROXY-m)))
$(eval $(call BuildPlugin,iptables-mod-tee,$(IPT_TEE-m)))
$(eval $(call BuildPlugin,iptables-mod-u32,$(IPT_U32-m)))
$(eval $(call BuildPlugin,iptables-mod-nflog,$(IPT_NFLOG-m)))
$(eval $(call BuildPlugin,iptables-mod-trace,$(IPT_DEBUG-m)))
$(eval $(call BuildPlugin,iptables-mod-nfqueue,$(IPT_NFQUEUE-m)))
$(eval $(call BuildPackage,ip6tables))
$(eval $(call BuildPlugin,ip6tables-extra,$(IPT_IPV6_EXTRA-m)))