diff options
| author | Patrick McHardy <kaber@trash.net> | 2006-05-30 03:23:54 +0200 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-06-18 06:28:57 +0200 |
| commit | 39a27a35c5c1b5be499a0576a35c45a011788bf8 (patch) | |
| tree | ec5383eec578c455ca5a14184dc9398bbc5f9afb /net/ipv4 | |
| parent | [NETFILTER]: conntrack: don't call helpers for related ICMP messages (diff) | |
| download | linux-39a27a35c5c1b5be499a0576a35c45a011788bf8.tar.xz linux-39a27a35c5c1b5be499a0576a35c45a011788bf8.zip | |
[NETFILTER]: conntrack: add sysctl to disable checksumming
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/netfilter/ip_conntrack_proto_icmp.c | 2 | ||||
| -rw-r--r-- | net/ipv4/netfilter/ip_conntrack_proto_tcp.c | 2 | ||||
| -rw-r--r-- | net/ipv4/netfilter/ip_conntrack_proto_udp.c | 2 | ||||
| -rw-r--r-- | net/ipv4/netfilter/ip_conntrack_standalone.c | 11 | ||||
| -rw-r--r-- | net/ipv4/netfilter/nf_conntrack_proto_icmp.c | 2 |
5 files changed, 15 insertions, 4 deletions
diff --git a/net/ipv4/netfilter/ip_conntrack_proto_icmp.c b/net/ipv4/netfilter/ip_conntrack_proto_icmp.c index d8b14a9010a6..23f1c504586d 100644 --- a/net/ipv4/netfilter/ip_conntrack_proto_icmp.c +++ b/net/ipv4/netfilter/ip_conntrack_proto_icmp.c @@ -224,7 +224,7 @@ icmp_error(struct sk_buff *skb, enum ip_conntrack_info *ctinfo, } /* See ip_conntrack_proto_tcp.c */ - if (hooknum == NF_IP_PRE_ROUTING && + if (ip_conntrack_checksum && hooknum == NF_IP_PRE_ROUTING && nf_ip_checksum(skb, hooknum, skb->nh.iph->ihl * 4, 0)) { if (LOG_INVALID(IPPROTO_ICMP)) nf_log_packet(PF_INET, 0, skb, NULL, NULL, NULL, diff --git a/net/ipv4/netfilter/ip_conntrack_proto_tcp.c b/net/ipv4/netfilter/ip_conntrack_proto_tcp.c index 062b252b58ad..c5c2ce5cdeb8 100644 --- a/net/ipv4/netfilter/ip_conntrack_proto_tcp.c +++ b/net/ipv4/netfilter/ip_conntrack_proto_tcp.c @@ -870,7 +870,7 @@ static int tcp_error(struct sk_buff *skb, * and moreover root might send raw packets. */ /* FIXME: Source route IP option packets --RR */ - if (hooknum == NF_IP_PRE_ROUTING && + if (ip_conntrack_checksum && hooknum == NF_IP_PRE_ROUTING && nf_ip_checksum(skb, hooknum, iph->ihl * 4, IPPROTO_TCP)) { if (LOG_INVALID(IPPROTO_TCP)) nf_log_packet(PF_INET, 0, skb, NULL, NULL, NULL, diff --git a/net/ipv4/netfilter/ip_conntrack_proto_udp.c b/net/ipv4/netfilter/ip_conntrack_proto_udp.c index 70899868783b..9b2c16b4d2ff 100644 --- a/net/ipv4/netfilter/ip_conntrack_proto_udp.c +++ b/net/ipv4/netfilter/ip_conntrack_proto_udp.c @@ -120,7 +120,7 @@ static int udp_error(struct sk_buff *skb, enum ip_conntrack_info *ctinfo, * because the semantic of CHECKSUM_HW is different there * and moreover root might send raw packets. * FIXME: Source route IP option packets --RR */ - if (hooknum == NF_IP_PRE_ROUTING && + if (ip_conntrack_checksum && hooknum == NF_IP_PRE_ROUTING && nf_ip_checksum(skb, hooknum, iph->ihl * 4, IPPROTO_UDP)) { if (LOG_INVALID(IPPROTO_UDP)) nf_log_packet(PF_INET, 0, skb, NULL, NULL, NULL, diff --git a/net/ipv4/netfilter/ip_conntrack_standalone.c b/net/ipv4/netfilter/ip_conntrack_standalone.c index f0cc7feb0da3..6cb9b989d14c 100644 --- a/net/ipv4/netfilter/ip_conntrack_standalone.c +++ b/net/ipv4/netfilter/ip_conntrack_standalone.c @@ -564,6 +564,8 @@ extern unsigned int ip_ct_generic_timeout; static int log_invalid_proto_min = 0; static int log_invalid_proto_max = 255; +int ip_conntrack_checksum = 1; + static struct ctl_table_header *ip_ct_sysctl_header; static ctl_table ip_ct_sysctl_table[] = { @@ -592,6 +594,14 @@ static ctl_table ip_ct_sysctl_table[] = { .proc_handler = &proc_dointvec, }, { + .ctl_name = NET_IPV4_NF_CONNTRACK_CHECKSUM, + .procname = "ip_conntrack_checksum", + .data = &ip_conntrack_checksum, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, + { .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT, .procname = "ip_conntrack_tcp_timeout_syn_sent", .data = &ip_ct_tcp_timeout_syn_sent, @@ -946,6 +956,7 @@ EXPORT_SYMBOL_GPL(__ip_conntrack_helper_find_byname); EXPORT_SYMBOL_GPL(ip_conntrack_proto_find_get); EXPORT_SYMBOL_GPL(ip_conntrack_proto_put); EXPORT_SYMBOL_GPL(__ip_conntrack_proto_find); +EXPORT_SYMBOL_GPL(ip_conntrack_checksum); #if defined(CONFIG_IP_NF_CONNTRACK_NETLINK) || \ defined(CONFIG_IP_NF_CONNTRACK_NETLINK_MODULE) EXPORT_SYMBOL_GPL(ip_ct_port_tuple_to_nfattr); diff --git a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c index 4b0d361cc6e6..663a73ee3f2f 100644 --- a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c +++ b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c @@ -235,7 +235,7 @@ icmp_error(struct sk_buff *skb, unsigned int dataoff, } /* See ip_conntrack_proto_tcp.c */ - if (hooknum == NF_IP_PRE_ROUTING && + if (nf_conntrack_checksum && hooknum == NF_IP_PRE_ROUTING && nf_ip_checksum(skb, hooknum, dataoff, 0)) { if (LOG_INVALID(IPPROTO_ICMP)) nf_log_packet(PF_INET, 0, skb, NULL, NULL, NULL, |