#endif
/*
- * This array holds the first and last local port number.
+ * This struct holds the first and last local port number.
*/
-int sysctl_local_port_range[2] = { 32768, 61000 };
-DEFINE_SEQLOCK(sysctl_port_range_lock);
+struct local_ports sysctl_local_ports __read_mostly = {
+ .lock = SEQLOCK_UNLOCKED,
+ .range = { 32768, 61000 },
+};
void inet_get_local_port_range(int *low, int *high)
{
unsigned seq;
do {
- seq = read_seqbegin(&sysctl_port_range_lock);
+ seq = read_seqbegin(&sysctl_local_ports.lock);
- *low = sysctl_local_port_range[0];
- *high = sysctl_local_port_range[1];
- } while (read_seqretry(&sysctl_port_range_lock, seq));
+ *low = sysctl_local_ports.range[0];
+ *high = sysctl_local_ports.range[1];
+ } while (read_seqretry(&sysctl_local_ports.lock, seq));
}
EXPORT_SYMBOL(inet_get_local_port_range);
struct hlist_node *node;
int reuse = sk->sk_reuse;
+ /*
+ * Unlike other sk lookup places we do not check
+ * for sk_net here, since _all_ the socks listed
+ * in tb->owners list belong to the same net - the
+ * one this bucket belongs to.
+ */
+
sk_for_each_bound(sk2, node, &tb->owners) {
if (sk != sk2 &&
!inet_v6_ipv6only(sk2) &&
rover = net_random() % remaining + low;
do {
- head = &hashinfo->bhash[inet_bhashfn(rover, hashinfo->bhash_size)];
+ head = &hashinfo->bhash[inet_bhashfn(net, rover,
+ hashinfo->bhash_size)];
spin_lock(&head->lock);
inet_bind_bucket_for_each(tb, node, &head->chain)
if (tb->ib_net == net && tb->port == rover)
*/
snum = rover;
} else {
- head = &hashinfo->bhash[inet_bhashfn(snum, hashinfo->bhash_size)];
+ head = &hashinfo->bhash[inet_bhashfn(net, snum,
+ hashinfo->bhash_size)];
spin_lock(&head->lock);
inet_bind_bucket_for_each(tb, node, &head->chain)
if (tb->ib_net == net && tb->port == snum)
goto tb_not_found;
tb_found:
if (!hlist_empty(&tb->owners)) {
- if (sk->sk_reuse > 1)
- goto success;
if (tb->fastreuse > 0 &&
sk->sk_reuse && sk->sk_state != TCP_LISTEN) {
goto success;
success:
if (!inet_csk(sk)->icsk_bind_hash)
inet_bind_hash(sk, tb, snum);
- BUG_TRAP(inet_csk(sk)->icsk_bind_hash == tb);
+ WARN_ON(inet_csk(sk)->icsk_bind_hash != tb);
ret = 0;
fail_unlock:
}
newsk = reqsk_queue_get_child(&icsk->icsk_accept_queue, sk);
- BUG_TRAP(newsk->sk_state != TCP_SYN_RECV);
+ WARN_ON(newsk->sk_state == TCP_SYN_RECV);
out:
release_sock(sk);
return newsk;
.saddr = ireq->loc_addr,
.tos = RT_CONN_FLAGS(sk) } },
.proto = sk->sk_protocol,
+ .flags = inet_sk_flowi_flags(sk),
.uli_u = { .ports =
{ .sport = inet_sk(sk)->sport,
.dport = ireq->rmt_port } } };
+ struct net *net = sock_net(sk);
security_req_classify_flow(req, &fl);
- if (ip_route_output_flow(sock_net(sk), &rt, &fl, sk, 0)) {
- IP_INC_STATS_BH(IPSTATS_MIB_OUTNOROUTES);
+ if (ip_route_output_flow(net, &rt, &fl, sk, 0)) {
+ IP_INC_STATS_BH(net, IPSTATS_MIB_OUTNOROUTES);
return NULL;
}
if (opt && opt->is_strictroute && rt->rt_dst != rt->rt_gateway) {
ip_rt_put(rt);
- IP_INC_STATS_BH(IPSTATS_MIB_OUTNOROUTES);
+ IP_INC_STATS_BH(net, IPSTATS_MIB_OUTNOROUTES);
return NULL;
}
return &rt->u.dst;
ireq->rmt_addr == raddr &&
ireq->loc_addr == laddr &&
AF_INET_FAMILY(req->rsk_ops->family)) {
- BUG_TRAP(!req->sk);
+ WARN_ON(req->sk);
*prevp = prev;
break;
}
struct inet_connection_sock *icsk = inet_csk(parent);
struct request_sock_queue *queue = &icsk->icsk_accept_queue;
struct listen_sock *lopt = queue->listen_opt;
- int thresh = icsk->icsk_syn_retries ? : sysctl_tcp_synack_retries;
+ int max_retries = icsk->icsk_syn_retries ? : sysctl_tcp_synack_retries;
+ int thresh = max_retries;
unsigned long now = jiffies;
struct request_sock **reqp, *req;
int i, budget;
}
}
+ if (queue->rskq_defer_accept)
+ max_retries = queue->rskq_defer_accept;
+
budget = 2 * (lopt->nr_table_entries / (timeout / interval));
i = lopt->clock_hand;
reqp=&lopt->syn_table[i];
while ((req = *reqp) != NULL) {
if (time_after_eq(now, req->expires)) {
- if (req->retrans < thresh &&
- !req->rsk_ops->rtx_syn_ack(parent, req)) {
+ if ((req->retrans < thresh ||
+ (inet_rsk(req)->acked && req->retrans < max_retries))
+ && !req->rsk_ops->rtx_syn_ack(parent, req)) {
unsigned long timeo;
if (req->retrans++ == 0)
newicsk->icsk_bind_hash = NULL;
inet_sk(newsk)->dport = inet_rsk(req)->rmt_port;
+ inet_sk(newsk)->num = ntohs(inet_rsk(req)->loc_port);
+ inet_sk(newsk)->sport = inet_rsk(req)->loc_port;
newsk->sk_write_space = sk_stream_write_space;
newicsk->icsk_retransmits = 0;
*/
void inet_csk_destroy_sock(struct sock *sk)
{
- BUG_TRAP(sk->sk_state == TCP_CLOSE);
- BUG_TRAP(sock_flag(sk, SOCK_DEAD));
+ WARN_ON(sk->sk_state != TCP_CLOSE);
+ WARN_ON(!sock_flag(sk, SOCK_DEAD));
/* It cannot be in hash table! */
- BUG_TRAP(sk_unhashed(sk));
+ WARN_ON(!sk_unhashed(sk));
/* If it has not 0 inet_sk(sk)->num, it must be bound */
- BUG_TRAP(!inet_sk(sk)->num || inet_csk(sk)->icsk_bind_hash);
+ WARN_ON(inet_sk(sk)->num && !inet_csk(sk)->icsk_bind_hash);
sk->sk_prot->destroy(sk);
local_bh_disable();
bh_lock_sock(child);
- BUG_TRAP(!sock_owned_by_user(child));
+ WARN_ON(sock_owned_by_user(child));
sock_hold(child);
sk->sk_prot->disconnect(child, O_NONBLOCK);
sk_acceptq_removed(sk);
__reqsk_free(req);
}
- BUG_TRAP(!sk->sk_ack_backlog);
+ WARN_ON(sk->sk_ack_backlog);
}
EXPORT_SYMBOL_GPL(inet_csk_listen_stop);
EXPORT_SYMBOL_GPL(inet_csk_addr2sockaddr);
-int inet_csk_ctl_sock_create(struct socket **sock, unsigned short family,
- unsigned short type, unsigned char protocol)
-{
- int rc = sock_create_kern(family, type, protocol, sock);
-
- if (rc == 0) {
- (*sock)->sk->sk_allocation = GFP_ATOMIC;
- inet_sk((*sock)->sk)->uc_ttl = -1;
- /*
- * Unhash it so that IP input processing does not even see it,
- * we do not wish this socket to see incoming packets.
- */
- (*sock)->sk->sk_prot->unhash((*sock)->sk);
- }
- return rc;
-}
-
-EXPORT_SYMBOL_GPL(inet_csk_ctl_sock_create);
-
#ifdef CONFIG_COMPAT
int inet_csk_compat_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff