/* Check TCP sequence numbers in ICMP packets. */
#define ICMP_MIN_LENGTH 8
-/* Socket used for sending RSTs */
-static struct sock *tcp_sock __read_mostly;
-
void tcp_v4_send_check(struct sock *sk, int len, struct sk_buff *skb);
#ifdef CONFIG_TCP_MD5SIG
sizeof(struct tcphdr), IPPROTO_TCP, 0);
arg.csumoffset = offsetof(struct tcphdr, check) / 2;
- ip_send_reply(tcp_sock, skb, &arg, arg.iov[0].iov_len);
+ ip_send_reply(dev_net(skb->dst->dev)->ipv4.tcp_sock, skb,
+ &arg, arg.iov[0].iov_len);
TCP_INC_STATS_BH(TCP_MIB_OUTSEGS);
TCP_INC_STATS_BH(TCP_MIB_OUTRSTS);
if (twsk)
arg.bound_dev_if = twsk->tw_sk.tw_bound_dev_if;
- ip_send_reply(tcp_sock, skb, &arg, arg.iov[0].iov_len);
+ ip_send_reply(dev_net(skb->dev)->ipv4.tcp_sock, skb,
+ &arg, arg.iov[0].iov_len);
TCP_INC_STATS_BH(TCP_MIB_OUTSEGS);
}
tcp_parse_options(skb, &tmp_opt, 0);
- if (want_cookie) {
+ if (want_cookie && !tmp_opt.saw_tstamp)
tcp_clear_options(&tmp_opt);
- tmp_opt.saw_tstamp = 0;
- }
if (tmp_opt.saw_tstamp && !tmp_opt.rcv_tsval) {
/* Some OSes (unknown ones, but I see them on web server, which
if (want_cookie) {
#ifdef CONFIG_SYN_COOKIES
syn_flood_warning(skb);
+ req->cookie_ts = tmp_opt.tstamp_ok;
#endif
isn = cookie_v4_init_sequence(sk, skb, &req->mss);
} else if (!isn) {
* to the moment of synflood.
*/
LIMIT_NETDEBUG(KERN_DEBUG "TCP: drop open "
- "request from %u.%u.%u.%u/%u\n",
+ "request from " NIPQUAD_FMT "/%u\n",
NIPQUAD(saddr),
ntohs(tcp_hdr(skb)->source));
goto drop_and_release;
struct hlist_node *node;
struct sock *sk = cur;
struct tcp_iter_state* st = seq->private;
- struct net *net = st->net;
+ struct net *net = seq_file_net(seq);
if (!sk) {
st->bucket = 0;
static void *established_get_first(struct seq_file *seq)
{
struct tcp_iter_state* st = seq->private;
- struct net *net = st->net;
+ struct net *net = seq_file_net(seq);
void *rc = NULL;
for (st->bucket = 0; st->bucket < tcp_hashinfo.ehash_size; ++st->bucket) {
struct inet_timewait_sock *tw;
struct hlist_node *node;
struct tcp_iter_state* st = seq->private;
- struct net *net = st->net;
+ struct net *net = seq_file_net(seq);
++st->num;
static int tcp_seq_open(struct inode *inode, struct file *file)
{
struct tcp_seq_afinfo *afinfo = PDE(inode)->data;
- struct seq_file *seq;
struct tcp_iter_state *s;
- struct net *net;
- int rc;
+ int err;
if (unlikely(afinfo == NULL))
return -EINVAL;
- s = kzalloc(sizeof(*s), GFP_KERNEL);
- if (!s)
- return -ENOMEM;
-
- rc = -ENXIO;
- net = get_proc_net(inode);
- if (!net)
- goto out_kfree;
+ err = seq_open_net(inode, file, &afinfo->seq_ops,
+ sizeof(struct tcp_iter_state));
+ if (err < 0)
+ return err;
+ s = ((struct seq_file *)file->private_data)->private;
s->family = afinfo->family;
- s->seq_ops.start = tcp_seq_start;
- s->seq_ops.next = tcp_seq_next;
- s->seq_ops.show = afinfo->seq_show;
- s->seq_ops.stop = tcp_seq_stop;
- s->net = net;
-
- rc = seq_open(file, &s->seq_ops);
- if (rc)
- goto out_put_net;
- seq = file->private_data;
- seq->private = s;
-out:
- return rc;
-out_put_net:
- put_net(net);
-out_kfree:
- kfree(s);
- goto out;
-}
-
-static int tcp_seq_release(struct inode *inode, struct file *file)
-{
- struct seq_file *seq = file->private_data;
- struct tcp_iter_state *s = seq->private;
-
- put_net(s->net);
- seq_release_private(inode, file);
return 0;
}
int rc = 0;
struct proc_dir_entry *p;
- if (!afinfo)
- return -EINVAL;
- afinfo->seq_fops->owner = afinfo->owner;
- afinfo->seq_fops->open = tcp_seq_open;
- afinfo->seq_fops->read = seq_read;
- afinfo->seq_fops->llseek = seq_lseek;
- afinfo->seq_fops->release = tcp_seq_release;
+ afinfo->seq_fops.open = tcp_seq_open;
+ afinfo->seq_fops.read = seq_read;
+ afinfo->seq_fops.llseek = seq_lseek;
+ afinfo->seq_fops.release = seq_release_net;
- p = proc_net_fops_create(net, afinfo->name, S_IRUGO, afinfo->seq_fops);
+ afinfo->seq_ops.start = tcp_seq_start;
+ afinfo->seq_ops.next = tcp_seq_next;
+ afinfo->seq_ops.stop = tcp_seq_stop;
+
+ p = proc_net_fops_create(net, afinfo->name, S_IRUGO, &afinfo->seq_fops);
if (p)
p->data = afinfo;
else
void tcp_proc_unregister(struct net *net, struct tcp_seq_afinfo *afinfo)
{
- if (!afinfo)
- return;
proc_net_remove(net, afinfo->name);
- memset(afinfo->seq_fops, 0, sizeof(*afinfo->seq_fops));
}
static void get_openreq4(struct sock *sk, struct request_sock *req,
return 0;
}
-static struct file_operations tcp4_seq_fops;
static struct tcp_seq_afinfo tcp4_seq_afinfo = {
- .owner = THIS_MODULE,
.name = "tcp",
.family = AF_INET,
- .seq_show = tcp4_seq_show,
- .seq_fops = &tcp4_seq_fops,
+ .seq_fops = {
+ .owner = THIS_MODULE,
+ },
+ .seq_ops = {
+ .show = tcp4_seq_show,
+ },
};
static int tcp4_proc_init_net(struct net *net)
#endif
};
+
+static int __net_init tcp_sk_init(struct net *net)
+{
+ return inet_ctl_sock_create(&net->ipv4.tcp_sock,
+ PF_INET, SOCK_RAW, IPPROTO_TCP, net);
+}
+
+static void __net_exit tcp_sk_exit(struct net *net)
+{
+ inet_ctl_sock_destroy(net->ipv4.tcp_sock);
+}
+
+static struct pernet_operations __net_initdata tcp_sk_ops = {
+ .init = tcp_sk_init,
+ .exit = tcp_sk_exit,
+};
+
void __init tcp_v4_init(void)
{
- if (inet_ctl_sock_create(&tcp_sock, PF_INET, SOCK_RAW,
- IPPROTO_TCP) < 0)
+ if (register_pernet_device(&tcp_sk_ops))
panic("Failed to create the TCP control socket.\n");
}
projects / linux-2.6-omap-h63xx.git / blobdiff