This removes the (now empty) nf_nat_l4proto struct, all its instances and all the no longer needed runtime (un)register functionality. nf_nat_need_gre() can be axed as well: the module that calls it (to load the no-longer-existing nat_gre module) also calls other nat core functions. GRE nat is now always available if kernel is built with it. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This removes the last l4proto indirection, the two callers, the l3proto
packet mangling helpers for ipv4 and ipv6, now call the
nf_nat_l4proto_manip_pkt() helper.
nf_nat_proto_{dccp,tcp,sctp,gre,icmp,icmpv6} are left behind, even though
they contain no functionality anymore to not clutter this patch.
Next patch will remove the empty files and the nf_nat_l4proto
struct.
nf_nat_proto_udp.c is renamed to nf_nat_proto.c, as it now contains the
other nat manip functionality as well, not just udp and udplite.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
all protocols did set this to nf_nat_l4proto_nlattr_to_range, so just call it directly. The important difference is that we'll now also call it for protocols that we don't support (i.e., nf_nat_proto_unknown did not provide .nlattr_to_range). However, there should be no harm, even icmp provided this callback. If we don't implement a specific l4nat for this, nothing would make use of this information, so adding a big switch/case construct listing all supported l4protocols seems a bit pointless. This change leaves a single function pointer in the l4proto struct. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
supports fetching saddr/daddr of tunnel mode states, request id and spi. If direction is 'in', use inbound skb secpath, else dst->xfrm. Joint work with Máté Eckl. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This patch implements the tunnel object type that can be used to configure tunnels via metadata template through the existing lightweight API from the ingress path. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
A great portion of the code is taken from xt_TPROXY.c There are some changes compared to the iptables implementation: - tproxy statement is not terminal here - Either address or port has to be specified, but at least one of them is necessary. If one of them is not specified, the evaluation will be performed with the original attribute of the packet (ie. target port is not specified => the packet's dport will be used). To make this work in inet tables, the tproxy structure has a family member (typically called priv->family) which is not necessarily equal to ctx->family. priv->family can have three values legally: - NFPROTO_IPV4 if the table family is ip OR if table family is inet, but an ipv4 address is specified as a target address. The rule only evaluates ipv4 packets in this case. - NFPROTO_IPV6 if the table family is ip6 OR if table family is inet, but an ipv6 address is specified as a target address. The rule only evaluates ipv6 packets in this case. - NFPROTO_UNSPEC if the table family is inet AND if only the port is specified. The rule will evaluate both ipv4 and ipv6 packets. Signed-off-by: Máté Eckl <ecklm94@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Add basic module functions into nft_osf.[ch] in order to implement OSF module in nf_tables. Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Rename nf_osf.c to nfnetlink_osf.c as we introduce nfnetlink_osf which is the OSF infraestructure. Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Pablo Neira Ayuso says:
====================
Netfilter/IPVS updates for net-next
The following patchset contains Netfilter/IPVS updates for your net-next
tree:
1) No need to set ttl from reject action for the bridge family, from
Taehee Yoo.
2) Use a fixed timeout for flow that are passed up from the flowtable
to conntrack, from Florian Westphal.
3) More preparation patches for tproxy support for nf_tables, from Mate
Eckl.
4) Remove unnecessary indirection in core IPv6 checksum function, from
Florian Westphal.
5) Use nf_ct_get_tuplepr() from openvswitch, instead of opencoding it.
From Florian Westphal.
6) socket match now selects socket infrastructure, instead of depending
on it. From Mate Eckl.
7) Patch series to simplify conntrack tuple building/parsing from packet
path and ctnetlink, from Florian Westphal.
8) Fetch timeout policy from protocol helpers, instead of doing it from
core, from Florian Westphal.
9) Merge IPv4 and IPv6 protocol trackers into conntrack core, from
Florian Westphal.
10) Depend on CONFIG_NF_TABLES_IPV6 and CONFIG_IP6_NF_IPTABLES
respectively, instead of IPV6. Patch from Mate Eckl.
11) Add specific function for garbage collection in conncount,
from Yi-Hung Wei.
12) Catch number of elements in the connlimit list, from Yi-Hung Wei.
13) Move locking to nf_conncount, from Yi-Hung Wei.
14) Series of patches to add lockless tree traversal in nf_conncount,
from Yi-Hung Wei.
15) Resolve clash in matching conntracks when race happens, from
Martynas Pumputis.
16) If connection entry times out, remove template entry from the
ip_vs_conn_tab table to improve behaviour under flood, from
Julian Anastasov.
17) Remove useless parameter from nf_ct_helper_ext_add(), from Gao feng.
18) Call abort from 2-phase commit protocol before requesting modules,
make sure this is done under the mutex, from Florian Westphal.
19) Grab module reference when starting transaction, also from Florian.
20) Dynamically allocate expression info array for pre-parsing, from
Florian.
21) Add per netns mutex for nf_tables, from Florian Westphal.
22) A couple of patches to simplify and refactor nf_osf code to prepare
for nft_osf support.
23) Break evaluation on missing socket, from Mate Eckl.
24) Allow to match socket mark from nft_socket, from Mate Eckl.
25) Remove dependency on nf_defrag_ipv6, now that IPv6 tracker is
built-in into nf_conntrack. From Florian Westphal.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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 <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>