diff options
Diffstat (limited to 'net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c')
| -rw-r--r-- | net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c | 68 |
1 files changed, 9 insertions, 59 deletions
diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c index 5a955c440364..4a7c35275396 100644 --- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c +++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c @@ -1,3 +1,4 @@ + /* (C) 1999-2001 Paul `Rusty' Russell * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org> * @@ -24,6 +25,7 @@ #include <net/netfilter/nf_conntrack_core.h> #include <net/netfilter/ipv4/nf_conntrack_ipv4.h> #include <net/netfilter/nf_nat_helper.h> +#include <net/netfilter/ipv4/nf_defrag_ipv4.h> int (*nf_nat_seq_adjust_hook)(struct sk_buff *skb, struct nf_conn *ct, @@ -63,23 +65,6 @@ static int ipv4_print_tuple(struct seq_file *s, NIPQUAD(tuple->dst.u3.ip)); } -/* Returns new sk_buff, or NULL */ -static int nf_ct_ipv4_gather_frags(struct sk_buff *skb, u_int32_t user) -{ - int err; - - skb_orphan(skb); - - local_bh_disable(); - err = ip_defrag(skb, user); - local_bh_enable(); - - if (!err) - ip_send_check(ip_hdr(skb)); - - return err; -} - static int ipv4_get_l4proto(const struct sk_buff *skb, unsigned int nhoff, unsigned int *dataoff, u_int8_t *protonum) { @@ -144,35 +129,13 @@ out: return nf_conntrack_confirm(skb); } -static unsigned int ipv4_conntrack_defrag(unsigned int hooknum, - struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - int (*okfn)(struct sk_buff *)) -{ - /* Previously seen (loopback)? Ignore. Do this before - fragment check. */ - if (skb->nfct) - return NF_ACCEPT; - - /* Gather fragments. */ - if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) { - if (nf_ct_ipv4_gather_frags(skb, - hooknum == NF_INET_PRE_ROUTING ? - IP_DEFRAG_CONNTRACK_IN : - IP_DEFRAG_CONNTRACK_OUT)) - return NF_STOLEN; - } - return NF_ACCEPT; -} - static unsigned int ipv4_conntrack_in(unsigned int hooknum, struct sk_buff *skb, const struct net_device *in, const struct net_device *out, int (*okfn)(struct sk_buff *)) { - return nf_conntrack_in(PF_INET, hooknum, skb); + return nf_conntrack_in(dev_net(in), PF_INET, hooknum, skb); } static unsigned int ipv4_conntrack_local(unsigned int hooknum, @@ -188,20 +151,13 @@ static unsigned int ipv4_conntrack_local(unsigned int hooknum, printk("ipt_hook: happy cracking.\n"); return NF_ACCEPT; } - return nf_conntrack_in(PF_INET, hooknum, skb); + return nf_conntrack_in(dev_net(out), PF_INET, hooknum, skb); } /* Connection tracking may drop packets, but never alters them, so make it the first hook. */ static struct nf_hook_ops ipv4_conntrack_ops[] __read_mostly = { { - .hook = ipv4_conntrack_defrag, - .owner = THIS_MODULE, - .pf = PF_INET, - .hooknum = NF_INET_PRE_ROUTING, - .priority = NF_IP_PRI_CONNTRACK_DEFRAG, - }, - { .hook = ipv4_conntrack_in, .owner = THIS_MODULE, .pf = PF_INET, @@ -209,13 +165,6 @@ static struct nf_hook_ops ipv4_conntrack_ops[] __read_mostly = { .priority = NF_IP_PRI_CONNTRACK, }, { - .hook = ipv4_conntrack_defrag, - .owner = THIS_MODULE, - .pf = PF_INET, - .hooknum = NF_INET_LOCAL_OUT, - .priority = NF_IP_PRI_CONNTRACK_DEFRAG, - }, - { .hook = ipv4_conntrack_local, .owner = THIS_MODULE, .pf = PF_INET, @@ -254,7 +203,7 @@ static ctl_table ip_ct_sysctl_table[] = { { .ctl_name = NET_IPV4_NF_CONNTRACK_COUNT, .procname = "ip_conntrack_count", - .data = &nf_conntrack_count, + .data = &init_net.ct.count, .maxlen = sizeof(int), .mode = 0444, .proc_handler = &proc_dointvec, @@ -270,7 +219,7 @@ static ctl_table ip_ct_sysctl_table[] = { { .ctl_name = NET_IPV4_NF_CONNTRACK_CHECKSUM, .procname = "ip_conntrack_checksum", - .data = &nf_conntrack_checksum, + .data = &init_net.ct.sysctl_checksum, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, @@ -278,7 +227,7 @@ static ctl_table ip_ct_sysctl_table[] = { { .ctl_name = NET_IPV4_NF_CONNTRACK_LOG_INVALID, .procname = "ip_conntrack_log_invalid", - .data = &nf_ct_log_invalid, + .data = &init_net.ct.sysctl_log_invalid, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = &proc_dointvec_minmax, @@ -323,7 +272,7 @@ getorigdst(struct sock *sk, int optval, void __user *user, int *len) return -EINVAL; } - h = nf_conntrack_find_get(&tuple); + h = nf_conntrack_find_get(sock_net(sk), &tuple); if (h) { struct sockaddr_in sin; struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(h); @@ -422,6 +371,7 @@ static int __init nf_conntrack_l3proto_ipv4_init(void) int ret = 0; need_conntrack(); + nf_defrag_ipv4_enable(); ret = nf_register_sockopt(&so_getorigdst); if (ret < 0) { |