[TCPDIAG]: Introduce inet_diag_{register,unregister}

[safe/jmp/linux-2.6] / net / dccp / minisocks.c

diff --git a/net/dccp/minisocks.c b/net/dccp/minisocks.c
index 810f0c2..a6a0b27 100644 (file)
--- a/net/dccp/minisocks.c
+++ b/net/dccp/minisocks.c
@@ -22,18 +22,58 @@
 #include "ccid.h"
 #include "dccp.h"
 
+struct inet_timewait_death_row dccp_death_row = {
+       .sysctl_max_tw_buckets = NR_FILE * 2,
+       .period         = DCCP_TIMEWAIT_LEN / INET_TWDR_TWKILL_SLOTS,
+       .death_lock     = SPIN_LOCK_UNLOCKED,
+       .hashinfo       = &dccp_hashinfo,
+       .tw_timer       = TIMER_INITIALIZER(inet_twdr_hangman, 0,
+                                           (unsigned long)&dccp_death_row),
+       .twkill_work    = __WORK_INITIALIZER(dccp_death_row.twkill_work,
+                                            inet_twdr_twkill_work,
+                                            &dccp_death_row),
+/* Short-time timewait calendar */
+
+       .twcal_hand     = -1,
+       .twcal_timer    = TIMER_INITIALIZER(inet_twdr_twcal_tick, 0,
+                                           (unsigned long)&dccp_death_row),
+};
+
 void dccp_time_wait(struct sock *sk, int state, int timeo)
 {
-       /* FIXME: Implement */
-       dccp_pr_debug("Want to help? Start here\n");
-       dccp_set_state(sk, state);
-}
+       struct inet_timewait_sock *tw = NULL;
 
-/* This is for handling early-kills of TIME_WAIT sockets. */
-void dccp_tw_deschedule(struct inet_timewait_sock *tw)
-{
-       dccp_pr_debug("Want to help? Start here\n");
-       __inet_twsk_kill(tw, &dccp_hashinfo);
+       if (dccp_death_row.tw_count < dccp_death_row.sysctl_max_tw_buckets)
+               tw = inet_twsk_alloc(sk, state);
+
+       if (tw != NULL) {
+               const struct inet_connection_sock *icsk = inet_csk(sk);
+               const int rto = (icsk->icsk_rto << 2) - (icsk->icsk_rto >> 1);
+
+               /* Linkage updates. */
+               __inet_twsk_hashdance(tw, sk, &dccp_hashinfo);
+
+               /* Get the TIME_WAIT timeout firing. */
+               if (timeo < rto)
+                       timeo = rto;
+
+               tw->tw_timeout = DCCP_TIMEWAIT_LEN;
+               if (state == DCCP_TIME_WAIT)
+                       timeo = DCCP_TIMEWAIT_LEN;
+
+               inet_twsk_schedule(tw, &dccp_death_row, timeo,
+                                  DCCP_TIMEWAIT_LEN);
+               inet_twsk_put(tw);
+       } else {
+               /* Sorry, if we're out of memory, just CLOSE this
+                * socket up.  We've got bigger problems than
+                * non-graceful socket closings.
+                */
+               if (net_ratelimit())
+                       printk(KERN_INFO "DCCP: time wait bucket table overflow\n");
+       }
+
+       dccp_done(sk);
 }
 
 struct sock *dccp_create_openreq_child(struct sock *sk,
@@ -55,7 +95,7 @@ struct sock *dccp_create_openreq_child(struct sock *sk,
 
                newdp->dccps_hc_rx_ackpkts = NULL;
                newdp->dccps_role = DCCP_ROLE_SERVER;
-               newicsk->icsk_rto = TCP_TIMEOUT_INIT;
+               newicsk->icsk_rto = DCCP_TIMEOUT_INIT;
 
                if (newdp->dccps_options.dccpo_send_ack_vector) {
                        newdp->dccps_hc_rx_ackpkts = dccp_ackpkts_alloc(DCCP_MAX_ACK_VECTOR_LEN,
@@ -142,7 +182,10 @@ struct sock *dccp_check_req(struct sock *sk, struct sk_buff *skb,
        /* Invalid ACK */
        if (DCCP_SKB_CB(skb)->dccpd_ack_seq != dccp_rsk(req)->dreq_iss) {
                dccp_pr_debug("Invalid ACK number: ack_seq=%llu, dreq_iss=%llu\n",
-                             DCCP_SKB_CB(skb)->dccpd_ack_seq, dccp_rsk(req)->dreq_iss);
+                             (unsigned long long)
+                             DCCP_SKB_CB(skb)->dccpd_ack_seq,
+                             (unsigned long long)
+                             dccp_rsk(req)->dreq_iss);
                goto drop;
        }