diff options
author | David S. Miller <davem@davemloft.net> | 2015-03-09 15:58:21 -0400 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2015-03-09 15:58:21 -0400 |
commit | 5428aef81157768f1052b116e0cc8abf88ff3e36 (patch) | |
tree | a4fe8e39c5986b59ae50d3a6fefe46c309e2444e /net/ipv4 | |
parent | 26c459a8072f2bb0680081205376e1371c114b12 (diff) | |
parent | e5de75bf88858f5b3ab11e2504b86ec059f03102 (diff) | |
download | linux-stable-5428aef81157768f1052b116e0cc8abf88ff3e36.tar.gz linux-stable-5428aef81157768f1052b116e0cc8abf88ff3e36.tar.bz2 linux-stable-5428aef81157768f1052b116e0cc8abf88ff3e36.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
Pablo Neira Ayuso says:
====================
Netfilter updates for net-next
The following patchset contains Netfilter updates for your net-next
tree. Basically, improvements for the packet rejection infrastructure,
deprecation of CLUSTERIP, cleanups for nf_tables and some untangling for
br_netfilter. More specifically they are:
1) Send packet to reset flow if checksum is valid, from Florian Westphal.
2) Fix nf_tables reject bridge from the input chain, also from Florian.
3) Deprecate the CLUSTERIP target, the cluster match supersedes it in
functionality and it's known to have problems.
4) A couple of cleanups for nf_tables rule tracing infrastructure, from
Patrick McHardy.
5) Another cleanup to place transaction declarations at the bottom of
nf_tables.h, also from Patrick.
6) Consolidate Kconfig dependencies wrt. NF_TABLES.
7) Limit table names to 32 bytes in nf_tables.
8) mac header copying in bridge netfilter is already required when
calling ip_fragment(), from Florian Westphal.
9) move nf_bridge_update_protocol() to br_netfilter.c, also from
Florian.
10) Small refactor in br_netfilter in the transmission path, again from
Florian.
11) Move br_nf_pre_routing_finish_bridge_slow() to br_netfilter.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r-- | net/ipv4/netfilter/Kconfig | 38 | ||||
-rw-r--r-- | net/ipv4/netfilter/ipt_CLUSTERIP.c | 7 | ||||
-rw-r--r-- | net/ipv4/netfilter/ipt_REJECT.c | 17 | ||||
-rw-r--r-- | net/ipv4/netfilter/nf_reject_ipv4.c | 23 | ||||
-rw-r--r-- | net/ipv4/netfilter/nft_reject_ipv4.c | 3 |
5 files changed, 62 insertions, 26 deletions
diff --git a/net/ipv4/netfilter/Kconfig b/net/ipv4/netfilter/Kconfig index 59f883d9cadf..fb20f363151f 100644 --- a/net/ipv4/netfilter/Kconfig +++ b/net/ipv4/netfilter/Kconfig @@ -36,24 +36,16 @@ config NF_CONNTRACK_PROC_COMPAT If unsure, say Y. -config NF_LOG_ARP - tristate "ARP packet logging" - default m if NETFILTER_ADVANCED=n - select NF_LOG_COMMON - -config NF_LOG_IPV4 - tristate "IPv4 packet logging" - default m if NETFILTER_ADVANCED=n - select NF_LOG_COMMON +if NF_TABLES config NF_TABLES_IPV4 - depends on NF_TABLES tristate "IPv4 nf_tables support" help This option enables the IPv4 support for nf_tables. +if NF_TABLES_IPV4 + config NFT_CHAIN_ROUTE_IPV4 - depends on NF_TABLES_IPV4 tristate "IPv4 nf_tables route chain support" help This option enables the "route" chain for IPv4 in nf_tables. This @@ -61,22 +53,34 @@ config NFT_CHAIN_ROUTE_IPV4 fields such as the source, destination, type of service and the packet mark. -config NF_REJECT_IPV4 - tristate "IPv4 packet rejection" - default m if NETFILTER_ADVANCED=n - config NFT_REJECT_IPV4 - depends on NF_TABLES_IPV4 select NF_REJECT_IPV4 default NFT_REJECT tristate +endif # NF_TABLES_IPV4 + config NF_TABLES_ARP - depends on NF_TABLES tristate "ARP nf_tables support" help This option enables the ARP support for nf_tables. +endif # NF_TABLES + +config NF_LOG_ARP + tristate "ARP packet logging" + default m if NETFILTER_ADVANCED=n + select NF_LOG_COMMON + +config NF_LOG_IPV4 + tristate "IPv4 packet logging" + default m if NETFILTER_ADVANCED=n + select NF_LOG_COMMON + +config NF_REJECT_IPV4 + tristate "IPv4 packet rejection" + default m if NETFILTER_ADVANCED=n + config NF_NAT_IPV4 tristate "IPv4 NAT" depends on NF_CONNTRACK_IPV4 diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c index e90f83a3415b..f75e9df5e017 100644 --- a/net/ipv4/netfilter/ipt_CLUSTERIP.c +++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c @@ -418,6 +418,13 @@ static int clusterip_tg_check(const struct xt_tgchk_param *par) if (ret < 0) pr_info("cannot load conntrack support for proto=%u\n", par->family); + + if (!par->net->xt.clusterip_deprecated_warning) { + pr_info("ipt_CLUSTERIP is deprecated and it will removed soon, " + "use xt_cluster instead\n"); + par->net->xt.clusterip_deprecated_warning = true; + } + return ret; } diff --git a/net/ipv4/netfilter/ipt_REJECT.c b/net/ipv4/netfilter/ipt_REJECT.c index 8f48f5517e33..87907d4bd259 100644 --- a/net/ipv4/netfilter/ipt_REJECT.c +++ b/net/ipv4/netfilter/ipt_REJECT.c @@ -34,31 +34,32 @@ static unsigned int reject_tg(struct sk_buff *skb, const struct xt_action_param *par) { const struct ipt_reject_info *reject = par->targinfo; + int hook = par->hooknum; switch (reject->with) { case IPT_ICMP_NET_UNREACHABLE: - nf_send_unreach(skb, ICMP_NET_UNREACH); + nf_send_unreach(skb, ICMP_NET_UNREACH, hook); break; case IPT_ICMP_HOST_UNREACHABLE: - nf_send_unreach(skb, ICMP_HOST_UNREACH); + nf_send_unreach(skb, ICMP_HOST_UNREACH, hook); break; case IPT_ICMP_PROT_UNREACHABLE: - nf_send_unreach(skb, ICMP_PROT_UNREACH); + nf_send_unreach(skb, ICMP_PROT_UNREACH, hook); break; case IPT_ICMP_PORT_UNREACHABLE: - nf_send_unreach(skb, ICMP_PORT_UNREACH); + nf_send_unreach(skb, ICMP_PORT_UNREACH, hook); break; case IPT_ICMP_NET_PROHIBITED: - nf_send_unreach(skb, ICMP_NET_ANO); + nf_send_unreach(skb, ICMP_NET_ANO, hook); break; case IPT_ICMP_HOST_PROHIBITED: - nf_send_unreach(skb, ICMP_HOST_ANO); + nf_send_unreach(skb, ICMP_HOST_ANO, hook); break; case IPT_ICMP_ADMIN_PROHIBITED: - nf_send_unreach(skb, ICMP_PKT_FILTERED); + nf_send_unreach(skb, ICMP_PKT_FILTERED, hook); break; case IPT_TCP_RESET: - nf_send_reset(skb, par->hooknum); + nf_send_reset(skb, hook); case IPT_ICMP_ECHOREPLY: /* Doesn't happen. */ break; diff --git a/net/ipv4/netfilter/nf_reject_ipv4.c b/net/ipv4/netfilter/nf_reject_ipv4.c index 536da7bc598a..b7405eb7f1ef 100644 --- a/net/ipv4/netfilter/nf_reject_ipv4.c +++ b/net/ipv4/netfilter/nf_reject_ipv4.c @@ -164,4 +164,27 @@ void nf_send_reset(struct sk_buff *oldskb, int hook) } EXPORT_SYMBOL_GPL(nf_send_reset); +void nf_send_unreach(struct sk_buff *skb_in, int code, int hook) +{ + struct iphdr *iph = ip_hdr(skb_in); + u8 proto; + + if (skb_in->csum_bad || iph->frag_off & htons(IP_OFFSET)) + return; + + if (skb_csum_unnecessary(skb_in)) { + icmp_send(skb_in, ICMP_DEST_UNREACH, code, 0); + return; + } + + if (iph->protocol == IPPROTO_TCP || iph->protocol == IPPROTO_UDP) + proto = iph->protocol; + else + proto = 0; + + if (nf_ip_checksum(skb_in, hook, ip_hdrlen(skb_in), proto) == 0) + icmp_send(skb_in, ICMP_DEST_UNREACH, code, 0); +} +EXPORT_SYMBOL_GPL(nf_send_unreach); + MODULE_LICENSE("GPL"); diff --git a/net/ipv4/netfilter/nft_reject_ipv4.c b/net/ipv4/netfilter/nft_reject_ipv4.c index d729542bd1b7..16a5d4d73d75 100644 --- a/net/ipv4/netfilter/nft_reject_ipv4.c +++ b/net/ipv4/netfilter/nft_reject_ipv4.c @@ -27,7 +27,8 @@ static void nft_reject_ipv4_eval(const struct nft_expr *expr, switch (priv->type) { case NFT_REJECT_ICMP_UNREACH: - nf_send_unreach(pkt->skb, priv->icmp_code); + nf_send_unreach(pkt->skb, priv->icmp_code, + pkt->ops->hooknum); break; case NFT_REJECT_TCP_RST: nf_send_reset(pkt->skb, pkt->ops->hooknum); |