From a400c30edb1958ceb53c4b8ce78989189b36df47 Mon Sep 17 00:00:00 2001 From: Holger Eitzenberger Date: Wed, 25 Mar 2009 21:53:39 +0100 Subject: [PATCH] netfilter: nf_conntrack: calculate per-protocol nlattr size Signed-off-by: Holger Eitzenberger Signed-off-by: Patrick McHardy --- net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c | 6 ++++++ net/ipv4/netfilter/nf_conntrack_proto_icmp.c | 6 ++++++ net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c | 6 ++++++ net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c | 6 ++++++ net/netfilter/nf_conntrack_proto_dccp.c | 9 +++++++++ net/netfilter/nf_conntrack_proto_gre.c | 1 + net/netfilter/nf_conntrack_proto_sctp.c | 10 ++++++++++ net/netfilter/nf_conntrack_proto_tcp.c | 15 +++++++++++++++ net/netfilter/nf_conntrack_proto_udp.c | 2 ++ net/netfilter/nf_conntrack_proto_udplite.c | 1 + 10 files changed, 62 insertions(+) diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c index 8b681f24e27..7d2ead7228a 100644 --- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c +++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c @@ -328,6 +328,11 @@ static int ipv4_nlattr_to_tuple(struct nlattr *tb[], return 0; } + +static int ipv4_nlattr_tuple_size(void) +{ + return nla_policy_len(ipv4_nla_policy, CTA_IP_MAX + 1); +} #endif static struct nf_sockopt_ops so_getorigdst = { @@ -347,6 +352,7 @@ struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv4 __read_mostly = { .get_l4proto = ipv4_get_l4proto, #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) .tuple_to_nlattr = ipv4_tuple_to_nlattr, + .nlattr_tuple_size = ipv4_nlattr_tuple_size, .nlattr_to_tuple = ipv4_nlattr_to_tuple, .nla_policy = ipv4_nla_policy, #endif diff --git a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c index 2a8bee26f43..23b2c2ee869 100644 --- a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c +++ b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c @@ -262,6 +262,11 @@ static int icmp_nlattr_to_tuple(struct nlattr *tb[], return 0; } + +static int icmp_nlattr_tuple_size(void) +{ + return nla_policy_len(icmp_nla_policy, CTA_PROTO_MAX + 1); +} #endif #ifdef CONFIG_SYSCTL @@ -309,6 +314,7 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_icmp __read_mostly = .me = NULL, #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) .tuple_to_nlattr = icmp_tuple_to_nlattr, + .nlattr_tuple_size = icmp_nlattr_tuple_size, .nlattr_to_tuple = icmp_nlattr_to_tuple, .nla_policy = icmp_nla_policy, #endif diff --git a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c index e6852f61721..2a15c2d66c6 100644 --- a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c +++ b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c @@ -342,6 +342,11 @@ static int ipv6_nlattr_to_tuple(struct nlattr *tb[], return 0; } + +static int ipv6_nlattr_tuple_size(void) +{ + return nla_policy_len(ipv6_nla_policy, CTA_IP_MAX + 1); +} #endif struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv6 __read_mostly = { @@ -353,6 +358,7 @@ struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv6 __read_mostly = { .get_l4proto = ipv6_get_l4proto, #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) .tuple_to_nlattr = ipv6_tuple_to_nlattr, + .nlattr_tuple_size = ipv6_nlattr_tuple_size, .nlattr_to_tuple = ipv6_nlattr_to_tuple, .nla_policy = ipv6_nla_policy, #endif diff --git a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c index 165b256a6fa..032fdf41500 100644 --- a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c +++ b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c @@ -268,6 +268,11 @@ static int icmpv6_nlattr_to_tuple(struct nlattr *tb[], return 0; } + +static int icmpv6_nlattr_tuple_size(void) +{ + return nla_policy_len(icmpv6_nla_policy, CTA_PROTO_MAX + 1); +} #endif #ifdef CONFIG_SYSCTL @@ -299,6 +304,7 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_icmpv6 __read_mostly = .error = icmpv6_error, #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) .tuple_to_nlattr = icmpv6_tuple_to_nlattr, + .nlattr_tuple_size = icmpv6_nlattr_tuple_size, .nlattr_to_tuple = icmpv6_nlattr_to_tuple, .nla_policy = icmpv6_nla_policy, #endif diff --git a/net/netfilter/nf_conntrack_proto_dccp.c b/net/netfilter/nf_conntrack_proto_dccp.c index d3d5a7fd73c..50dac8dbe7d 100644 --- a/net/netfilter/nf_conntrack_proto_dccp.c +++ b/net/netfilter/nf_conntrack_proto_dccp.c @@ -669,6 +669,12 @@ static int nlattr_to_dccp(struct nlattr *cda[], struct nf_conn *ct) write_unlock_bh(&dccp_lock); return 0; } + +static int dccp_nlattr_size(void) +{ + return nla_total_size(0) /* CTA_PROTOINFO_DCCP */ + + nla_policy_len(dccp_nla_policy, CTA_PROTOINFO_DCCP_MAX + 1); +} #endif #ifdef CONFIG_SYSCTL @@ -749,8 +755,10 @@ static struct nf_conntrack_l4proto dccp_proto4 __read_mostly = { .print_conntrack = dccp_print_conntrack, #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) .to_nlattr = dccp_to_nlattr, + .nlattr_size = dccp_nlattr_size, .from_nlattr = nlattr_to_dccp, .tuple_to_nlattr = nf_ct_port_tuple_to_nlattr, + .nlattr_tuple_size = nf_ct_port_nlattr_tuple_size, .nlattr_to_tuple = nf_ct_port_nlattr_to_tuple, .nla_policy = nf_ct_port_nla_policy, #endif @@ -771,6 +779,7 @@ static struct nf_conntrack_l4proto dccp_proto6 __read_mostly = { .to_nlattr = dccp_to_nlattr, .from_nlattr = nlattr_to_dccp, .tuple_to_nlattr = nf_ct_port_tuple_to_nlattr, + .nlattr_tuple_size = nf_ct_port_nlattr_tuple_size, .nlattr_to_tuple = nf_ct_port_nlattr_to_tuple, .nla_policy = nf_ct_port_nla_policy, #endif diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c index 1b279f9d6bf..117b80112fc 100644 --- a/net/netfilter/nf_conntrack_proto_gre.c +++ b/net/netfilter/nf_conntrack_proto_gre.c @@ -293,6 +293,7 @@ static struct nf_conntrack_l4proto nf_conntrack_l4proto_gre4 __read_mostly = { .me = THIS_MODULE, #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) .tuple_to_nlattr = nf_ct_port_tuple_to_nlattr, + .nlattr_tuple_size = nf_ct_port_nlattr_tuple_size, .nlattr_to_tuple = nf_ct_port_nlattr_to_tuple, .nla_policy = nf_ct_port_nla_policy, #endif diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c index 74e03790119..101b4ad9e81 100644 --- a/net/netfilter/nf_conntrack_proto_sctp.c +++ b/net/netfilter/nf_conntrack_proto_sctp.c @@ -537,6 +537,12 @@ static int nlattr_to_sctp(struct nlattr *cda[], struct nf_conn *ct) return 0; } + +static int sctp_nlattr_size(void) +{ + return nla_total_size(0) /* CTA_PROTOINFO_SCTP */ + + nla_policy_len(sctp_nla_policy, CTA_PROTOINFO_SCTP_MAX + 1); +} #endif #ifdef CONFIG_SYSCTL @@ -668,8 +674,10 @@ static struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp4 __read_mostly = { .me = THIS_MODULE, #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) .to_nlattr = sctp_to_nlattr, + .nlattr_size = sctp_nlattr_size, .from_nlattr = nlattr_to_sctp, .tuple_to_nlattr = nf_ct_port_tuple_to_nlattr, + .nlattr_tuple_size = nf_ct_port_nlattr_tuple_size, .nlattr_to_tuple = nf_ct_port_nlattr_to_tuple, .nla_policy = nf_ct_port_nla_policy, #endif @@ -696,8 +704,10 @@ static struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp6 __read_mostly = { .me = THIS_MODULE, #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) .to_nlattr = sctp_to_nlattr, + .nlattr_size = sctp_nlattr_size, .from_nlattr = nlattr_to_sctp, .tuple_to_nlattr = nf_ct_port_tuple_to_nlattr, + .nlattr_tuple_size = nf_ct_port_nlattr_tuple_size, .nlattr_to_tuple = nf_ct_port_nlattr_to_tuple, .nla_policy = nf_ct_port_nla_policy, #endif diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c index 7d3944f02ea..9b9e6718b2d 100644 --- a/net/netfilter/nf_conntrack_proto_tcp.c +++ b/net/netfilter/nf_conntrack_proto_tcp.c @@ -1183,6 +1183,17 @@ static int nlattr_to_tcp(struct nlattr *cda[], struct nf_conn *ct) return 0; } + +static int tcp_nlattr_size(void) +{ + return nla_total_size(0) /* CTA_PROTOINFO_TCP */ + + nla_policy_len(tcp_nla_policy, CTA_PROTOINFO_TCP_MAX + 1); +} + +static int tcp_nlattr_tuple_size(void) +{ + return nla_policy_len(nf_ct_port_nla_policy, CTA_PROTO_MAX + 1); +} #endif #ifdef CONFIG_SYSCTL @@ -1398,9 +1409,11 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp4 __read_mostly = .error = tcp_error, #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) .to_nlattr = tcp_to_nlattr, + .nlattr_size = tcp_nlattr_size, .from_nlattr = nlattr_to_tcp, .tuple_to_nlattr = nf_ct_port_tuple_to_nlattr, .nlattr_to_tuple = nf_ct_port_nlattr_to_tuple, + .nlattr_tuple_size = tcp_nlattr_tuple_size, .nla_policy = nf_ct_port_nla_policy, #endif #ifdef CONFIG_SYSCTL @@ -1428,9 +1441,11 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp6 __read_mostly = .error = tcp_error, #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) .to_nlattr = tcp_to_nlattr, + .nlattr_size = tcp_nlattr_size, .from_nlattr = nlattr_to_tcp, .tuple_to_nlattr = nf_ct_port_tuple_to_nlattr, .nlattr_to_tuple = nf_ct_port_nlattr_to_tuple, + .nlattr_tuple_size = tcp_nlattr_tuple_size, .nla_policy = nf_ct_port_nla_policy, #endif #ifdef CONFIG_SYSCTL diff --git a/net/netfilter/nf_conntrack_proto_udp.c b/net/netfilter/nf_conntrack_proto_udp.c index d4021179e24..70809d117b9 100644 --- a/net/netfilter/nf_conntrack_proto_udp.c +++ b/net/netfilter/nf_conntrack_proto_udp.c @@ -195,6 +195,7 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_udp4 __read_mostly = #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) .tuple_to_nlattr = nf_ct_port_tuple_to_nlattr, .nlattr_to_tuple = nf_ct_port_nlattr_to_tuple, + .nlattr_tuple_size = nf_ct_port_nlattr_tuple_size, .nla_policy = nf_ct_port_nla_policy, #endif #ifdef CONFIG_SYSCTL @@ -222,6 +223,7 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_udp6 __read_mostly = #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) .tuple_to_nlattr = nf_ct_port_tuple_to_nlattr, .nlattr_to_tuple = nf_ct_port_nlattr_to_tuple, + .nlattr_tuple_size = nf_ct_port_nlattr_tuple_size, .nla_policy = nf_ct_port_nla_policy, #endif #ifdef CONFIG_SYSCTL diff --git a/net/netfilter/nf_conntrack_proto_udplite.c b/net/netfilter/nf_conntrack_proto_udplite.c index 4579d8de13b..4614696c1b8 100644 --- a/net/netfilter/nf_conntrack_proto_udplite.c +++ b/net/netfilter/nf_conntrack_proto_udplite.c @@ -180,6 +180,7 @@ static struct nf_conntrack_l4proto nf_conntrack_l4proto_udplite4 __read_mostly = .error = udplite_error, #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) .tuple_to_nlattr = nf_ct_port_tuple_to_nlattr, + .nlattr_tuple_size = nf_ct_port_nlattr_tuple_size, .nlattr_to_tuple = nf_ct_port_nlattr_to_tuple, .nla_policy = nf_ct_port_nla_policy, #endif -- 2.41.1