Merge git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb

[linux-2.6] / net / ipv4 / inet_connection_sock.c

diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index ee55678a987d543da5116be996853dccd48534fb..bb81c958b7447ecc1f7cee2b898ab727756cb927 100644 (file)
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -55,6 +55,13 @@ int inet_csk_bind_conflict(const struct sock *sk,
        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) &&
@@ -96,7 +103,8 @@ int inet_csk_get_port(struct sock *sk, unsigned short snum)
                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)
@@ -123,7 +131,8 @@ int inet_csk_get_port(struct sock *sk, unsigned short snum)
                 */
                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)
@@ -133,8 +142,6 @@ int inet_csk_get_port(struct sock *sk, unsigned short 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;
@@ -331,15 +338,16 @@ struct dst_entry* inet_csk_route_req(struct sock *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;
@@ -414,7 +422,8 @@ void inet_csk_reqsk_queue_prune(struct sock *parent,
        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;
@@ -450,6 +459,9 @@ void inet_csk_reqsk_queue_prune(struct sock *parent,
                }
        }
 
+       if (queue->rskq_defer_accept)
+               max_retries = queue->rskq_defer_accept;
+
        budget = 2 * (lopt->nr_table_entries / (timeout / interval));
        i = lopt->clock_hand;
 
@@ -457,8 +469,9 @@ void inet_csk_reqsk_queue_prune(struct sock *parent,
                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)