VServer 1.9.2 (patch-2.6.8.1-vs1.9.2.diff)
[linux-2.6.git] / net / ipv6 / tcp_ipv6.c
index 2949cd1..5a19b3d 100644 (file)
 #include <net/transp_v6.h>
 #include <net/addrconf.h>
 #include <net/ip6_route.h>
+#include <net/ip6_checksum.h>
 #include <net/inet_ecn.h>
 #include <net/protocol.h>
 #include <net/xfrm.h>
+#include <net/addrconf.h>
+#include <net/snmp.h>
 
 #include <asm/uaccess.h>
 
@@ -479,7 +482,7 @@ static int tcp_v6_check_established(struct sock *sk)
 
        /* And established part... */
        sk_for_each(sk2, node, &head->chain) {
-               if(TCP_IPV6_MATCH(sk, saddr, daddr, ports, dif))
+               if(TCP_IPV6_MATCH(sk2, saddr, daddr, ports, dif))
                        goto not_unique;
        }
 
@@ -494,7 +497,7 @@ unique:
                /* Silly. Should hash-dance instead... */
                local_bh_disable();
                tcp_tw_deschedule(tw);
-               NET_INC_STATS_BH(TimeWaitRecycled);
+               NET_INC_STATS_BH(LINUX_MIB_TIMEWAITRECYCLED);
                local_bh_enable();
 
                tcp_tw_put(tw);
@@ -536,8 +539,7 @@ static int tcp_v6_hash_connect(struct sock *sk)
 
 static __inline__ int tcp_v6_iif(struct sk_buff *skb)
 {
-       struct inet6_skb_parm *opt = (struct inet6_skb_parm *) skb->cb;
-       return opt->iif;
+       return IP6CB(skb)->iif;
 }
 
 static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr, 
@@ -734,7 +736,7 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
        sk = tcp_v6_lookup(&hdr->daddr, th->dest, &hdr->saddr, th->source, skb->dev->ifindex);
 
        if (sk == NULL) {
-               ICMP6_INC_STATS_BH(__in6_dev_get(skb->dev), Icmp6InErrors);
+               ICMP6_INC_STATS_BH(__in6_dev_get(skb->dev), ICMP6_MIB_INERRORS);
                return;
        }
 
@@ -745,7 +747,7 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 
        bh_lock_sock(sk);
        if (sock_owned_by_user(sk))
-               NET_INC_STATS_BH(LockDroppedIcmps);
+               NET_INC_STATS_BH(LINUX_MIB_LOCKDROPPEDICMPS);
 
        if (sk->sk_state == TCP_CLOSE)
                goto out;
@@ -754,7 +756,7 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
        seq = ntohl(th->seq); 
        if (sk->sk_state != TCP_LISTEN &&
            !between(seq, tp->snd_una, tp->snd_nxt)) {
-               NET_INC_STATS_BH(OutOfWindowIcmps);
+               NET_INC_STATS_BH(LINUX_MIB_OUTOFWINDOWICMPS);
                goto out;
        }
 
@@ -822,7 +824,7 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
                BUG_TRAP(req->sk == NULL);
 
                if (seq != req->snt_isn) {
-                       NET_INC_STATS_BH(OutOfWindowIcmps);
+                       NET_INC_STATS_BH(LINUX_MIB_OUTOFWINDOWICMPS);
                        goto out;
                }
 
@@ -833,7 +835,7 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
        case TCP_SYN_RECV:  /* Cannot happen.
                               It can, it SYNs are crossed. --ANK */ 
                if (!sock_owned_by_user(sk)) {
-                       TCP_INC_STATS_BH(TcpAttemptFails);
+                       TCP_INC_STATS_BH(TCP_MIB_ATTEMPTFAILS);
                        sk->sk_err = err;
                        sk->sk_error_report(sk);                /* Wake people up to see the error (see connect in sock.c) */
 
@@ -879,7 +881,7 @@ static int tcp_v6_send_synack(struct sock *sk, struct open_request *req,
                    np->rxopt.bits.srcrt == 2 &&
                    req->af.v6_req.pktopts) {
                        struct sk_buff *pktopts = req->af.v6_req.pktopts;
-                       struct inet6_skb_parm *rxopt = (struct inet6_skb_parm *)pktopts->cb;
+                       struct inet6_skb_parm *rxopt = IP6CB(pktopts);
                        if (rxopt->srcrt)
                                opt = ipv6_invert_rthdr(sk, (struct ipv6_rt_hdr*)(pktopts->nh.raw + rxopt->srcrt));
                }
@@ -932,7 +934,7 @@ static struct or_calltable or_ipv6 = {
 static int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb)
 {
        struct ipv6_pinfo *np = inet6_sk(sk);
-       struct inet6_skb_parm *opt = (struct inet6_skb_parm *)skb->cb;
+       struct inet6_skb_parm *opt = IP6CB(skb);
 
        if (np->rxopt.all) {
                if ((opt->hop && np->rxopt.bits.hopopts) ||
@@ -1020,8 +1022,8 @@ static void tcp_v6_send_reset(struct sk_buff *skb)
        /* sk = NULL, but it is safe for now. RST socket required. */
        if (!ip6_dst_lookup(NULL, &buff->dst, &fl)) {
                ip6_xmit(NULL, buff, &fl, NULL, 0);
-               TCP_INC_STATS_BH(TcpOutSegs);
-               TCP_INC_STATS_BH(TcpOutRsts);
+               TCP_INC_STATS_BH(TCP_MIB_OUTSEGS);
+               TCP_INC_STATS_BH(TCP_MIB_OUTRSTS);
                return;
        }
 
@@ -1081,7 +1083,7 @@ static void tcp_v6_send_ack(struct sk_buff *skb, u32 seq, u32 ack, u32 win, u32
 
        if (!ip6_dst_lookup(NULL, &buff->dst, &fl)) {
                ip6_xmit(NULL, buff, &fl, NULL, 0);
-               TCP_INC_STATS_BH(TcpOutSegs);
+               TCP_INC_STATS_BH(TCP_MIB_OUTSEGS);
                return;
        }
 
@@ -1183,7 +1185,7 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
                goto drop;              
        }
 
-       if (tcp_acceptq_is_full(sk) && tcp_synq_young(sk) > 1)
+       if (sk_acceptq_is_full(sk) && tcp_synq_young(sk) > 1)
                goto drop;
 
        req = tcp_openreq_alloc();
@@ -1233,7 +1235,7 @@ drop:
        if (req)
                tcp_openreq_free(req);
 
-       TCP_INC_STATS_BH(TcpAttemptFails);
+       TCP_INC_STATS_BH(TCP_MIB_ATTEMPTFAILS);
        return 0; /* don't send reset */
 }
 
@@ -1300,12 +1302,12 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
 
        opt = np->opt;
 
-       if (tcp_acceptq_is_full(sk))
+       if (sk_acceptq_is_full(sk))
                goto out_overflow;
 
        if (np->rxopt.bits.srcrt == 2 &&
            opt == NULL && req->af.v6_req.pktopts) {
-               struct inet6_skb_parm *rxopt = (struct inet6_skb_parm *)req->af.v6_req.pktopts->cb;
+               struct inet6_skb_parm *rxopt = IP6CB(req->af.v6_req.pktopts);
                if (rxopt->srcrt)
                        opt = ipv6_invert_rthdr(sk, (struct ipv6_rt_hdr*)(req->af.v6_req.pktopts->nh.raw+rxopt->srcrt));
        }
@@ -1409,9 +1411,9 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
        return newsk;
 
 out_overflow:
-       NET_INC_STATS_BH(ListenOverflows);
+       NET_INC_STATS_BH(LINUX_MIB_LISTENOVERFLOWS);
 out:
-       NET_INC_STATS_BH(ListenDrops);
+       NET_INC_STATS_BH(LINUX_MIB_LISTENDROPS);
        if (opt && opt != np->opt)
                sock_kfree_s(sk, opt, opt->tot_len);
        dst_release(dst);
@@ -1536,7 +1538,7 @@ discard:
        kfree_skb(skb);
        return 0;
 csum_err:
-       TCP_INC_STATS_BH(TcpInErrs);
+       TCP_INC_STATS_BH(TCP_MIB_INERRS);
        goto discard;
 
 
@@ -1582,7 +1584,7 @@ static int tcp_v6_rcv(struct sk_buff **pskb, unsigned int *nhoffp)
        /*
         *      Count it even if it's bad.
         */
-       TCP_INC_STATS_BH(TcpInSegs);
+       TCP_INC_STATS_BH(TCP_MIB_INSEGS);
 
        if (!pskb_may_pull(skb, sizeof(struct tcphdr)))
                goto discard_it;
@@ -1643,7 +1645,7 @@ no_tcp_socket:
 
        if (skb->len < (th->doff<<2) || tcp_checksum_complete(skb)) {
 bad_packet:
-               TCP_INC_STATS_BH(TcpInErrs);
+               TCP_INC_STATS_BH(TCP_MIB_INERRS);
        } else {
                tcp_v6_send_reset(skb);
        }
@@ -1668,7 +1670,7 @@ do_time_wait:
        }
 
        if (skb->len < (th->doff<<2) || tcp_checksum_complete(skb)) {
-               TCP_INC_STATS_BH(TcpInErrs);
+               TCP_INC_STATS_BH(TCP_MIB_INERRS);
                tcp_tw_put((struct tcp_tw_bucket *) sk);
                goto discard_it;
        }
@@ -1879,7 +1881,7 @@ static int tcp_v6_init_sock(struct sock *sk)
 
        tp->af_specific = &ipv6_specific;
 
-       sk->sk_write_space = tcp_write_space;
+       sk->sk_write_space = sk_stream_write_space;
        sk->sk_use_write_queue = 1;
 
        sk->sk_sndbuf = sysctl_tcp_wmem[1];
@@ -1892,30 +1894,9 @@ static int tcp_v6_init_sock(struct sock *sk)
 
 static int tcp_v6_destroy_sock(struct sock *sk)
 {
-       struct tcp_opt *tp = tcp_sk(sk);
-       struct inet_opt *inet = inet_sk(sk);
-
-       tcp_clear_xmit_timers(sk);
-
-       /* Cleanup up the write buffer. */
-       tcp_writequeue_purge(sk);
-
-       /* Cleans up our, hopefully empty, out_of_order_queue. */
-       __skb_queue_purge(&tp->out_of_order_queue);
-
-       /* Clean prequeue, it must be empty really */
-       __skb_queue_purge(&tp->ucopy.prequeue);
-
-       /* Clean up a referenced TCP bind bucket. */
-       if (tcp_sk(sk)->bind_hash)
-               tcp_put_port(sk);
-
-       /* If sendmsg cached page exists, toss it. */
-       if (inet->sndmsg_page != NULL)
-               __free_page(inet->sndmsg_page);
-
-       atomic_dec(&tcp_sockets_allocated);
+       extern int tcp_v4_destroy_sock(struct sock *sk);
 
+       tcp_v4_destroy_sock(sk);
        return inet6_destroy_sock(sk);
 }
 
@@ -1933,7 +1914,7 @@ static void get_openreq6(struct seq_file *seq,
        dest = &req->af.v6_req.rmt_addr;
        seq_printf(seq,
                   "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
-                  "%02X %08X:%08X %02X:%08X %08X %5d %8d %d %d %p\n",
+                  "%02X %08X:%08X %02X:%08lX %08X %5d %8d %d %d %p\n",
                   i,
                   src->s6_addr32[0], src->s6_addr32[1],
                   src->s6_addr32[2], src->s6_addr32[3],
@@ -2019,7 +2000,7 @@ static void get_timewait6_sock(struct seq_file *seq,
 
        seq_printf(seq,
                   "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
-                  "%02X %08X:%08X %02X:%08X %08X %5d %8d %d %d %p\n",
+                  "%02X %08X:%08X %02X:%08lX %08X %5d %8d %d %d %p\n",
                   i,
                   src->s6_addr32[0], src->s6_addr32[1],
                   src->s6_addr32[2], src->s6_addr32[3], srcp,
@@ -2036,12 +2017,12 @@ static int tcp6_seq_show(struct seq_file *seq, void *v)
        struct tcp_iter_state *st;
 
        if (v == SEQ_START_TOKEN) {
-               seq_printf(seq,
-                          "  sl  "
-                          "local_address                         "
-                          "remote_address                        "
-                          "st tx_queue rx_queue tr tm->when retrnsmt"
-                          "   uid  timeout inode\n");
+               seq_puts(seq,
+                        "  sl  "
+                        "local_address                         "
+                        "remote_address                        "
+                        "st tx_queue rx_queue tr tm->when retrnsmt"
+                        "   uid  timeout inode\n");
                goto out;
        }
        st = seq->private;
@@ -2083,23 +2064,31 @@ void tcp6_proc_exit(void)
 #endif
 
 struct proto tcpv6_prot = {
-       .name           =       "TCPv6",
-       .close          =       tcp_close,
-       .connect        =       tcp_v6_connect,
-       .disconnect     =       tcp_disconnect,
-       .accept         =       tcp_accept,
-       .ioctl          =       tcp_ioctl,
-       .init           =       tcp_v6_init_sock,
-       .destroy        =       tcp_v6_destroy_sock,
-       .shutdown       =       tcp_shutdown,
-       .setsockopt     =       tcp_setsockopt,
-       .getsockopt     =       tcp_getsockopt,
-       .sendmsg        =       tcp_sendmsg,
-       .recvmsg        =       tcp_recvmsg,
-       .backlog_rcv    =       tcp_v6_do_rcv,
-       .hash           =       tcp_v6_hash,
-       .unhash         =       tcp_unhash,
-       .get_port       =       tcp_v6_get_port,
+       .name                   = "TCPv6",
+       .close                  = tcp_close,
+       .connect                = tcp_v6_connect,
+       .disconnect             = tcp_disconnect,
+       .accept                 = tcp_accept,
+       .ioctl                  = tcp_ioctl,
+       .init                   = tcp_v6_init_sock,
+       .destroy                = tcp_v6_destroy_sock,
+       .shutdown               = tcp_shutdown,
+       .setsockopt             = tcp_setsockopt,
+       .getsockopt             = tcp_getsockopt,
+       .sendmsg                = tcp_sendmsg,
+       .recvmsg                = tcp_recvmsg,
+       .backlog_rcv            = tcp_v6_do_rcv,
+       .hash                   = tcp_v6_hash,
+       .unhash                 = tcp_unhash,
+       .get_port               = tcp_v6_get_port,
+       .enter_memory_pressure  = tcp_enter_memory_pressure,
+       .sockets_allocated      = &tcp_sockets_allocated,
+       .memory_allocated       = &tcp_memory_allocated,
+       .memory_pressure        = &tcp_memory_pressure,
+       .sysctl_mem             = sysctl_tcp_mem,
+       .sysctl_wmem            = sysctl_tcp_wmem,
+       .sysctl_rmem            = sysctl_tcp_rmem,
+       .max_header             = MAX_TCP_HEADER,
 };
 
 static struct inet6_protocol tcpv6_protocol = {