net: skb->dst accessors

[safe/jmp/linux-2.6] / net / ipv4 / tcp_ipv4.c

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index f6b962f..5a1ca26 100644 (file)
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -546,7 +546,7 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
        if (th->rst)
                return;
 
-       if (skb->rtable->rt_type != RTN_LOCAL)
+       if (skb_rtable(skb)->rt_type != RTN_LOCAL)
                return;
 
        /* Swap the send and the receive. */
@@ -590,7 +590,7 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
        arg.csumoffset = offsetof(struct tcphdr, check) / 2;
        arg.flags = (sk && inet_sk(sk)->transparent) ? IP_REPLY_ARG_NOSRCCHECK : 0;
 
-       net = dev_net(skb->dst->dev);
+       net = dev_net(skb_dst(skb)->dev);
        ip_send_reply(net->ipv4.tcp_sock, skb,
                      &arg, arg.iov[0].iov_len);
 
@@ -617,7 +617,7 @@ static void tcp_v4_send_ack(struct sk_buff *skb, u32 seq, u32 ack,
                        ];
        } rep;
        struct ip_reply_arg arg;
-       struct net *net = dev_net(skb->dst->dev);
+       struct net *net = dev_net(skb_dst(skb)->dev);
 
        memset(&rep.th, 0, sizeof(struct tcphdr));
        memset(&arg, 0, sizeof(arg));
@@ -1185,7 +1185,7 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
 #endif
 
        /* Never answer to SYNs send to broadcast or multicast */
-       if (skb->rtable->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST))
+       if (skb_rtable(skb)->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST))
                goto drop;
 
        /* TW buckets are converted to open requests without
@@ -1226,27 +1226,19 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
        if (want_cookie && !tmp_opt.saw_tstamp)
                tcp_clear_options(&tmp_opt);
 
-       if (tmp_opt.saw_tstamp && !tmp_opt.rcv_tsval) {
-               /* Some OSes (unknown ones, but I see them on web server, which
-                * contains information interesting only for windows'
-                * users) do not send their stamp in SYN. It is easy case.
-                * We simply do not advertise TS support.
-                */
-               tmp_opt.saw_tstamp = 0;
-               tmp_opt.tstamp_ok  = 0;
-       }
        tmp_opt.tstamp_ok = tmp_opt.saw_tstamp;
 
        tcp_openreq_init(req, &tmp_opt, skb);
 
-       if (security_inet_conn_request(sk, skb, req))
-               goto drop_and_free;
-
        ireq = inet_rsk(req);
        ireq->loc_addr = daddr;
        ireq->rmt_addr = saddr;
        ireq->no_srccheck = inet_sk(sk)->transparent;
        ireq->opt = tcp_v4_save_options(sk, skb);
+
+       if (security_inet_conn_request(sk, skb, req))
+               goto drop_and_free;
+
        if (!want_cookie)
                TCP_ECN_create_request(req, tcp_hdr(skb));
 
@@ -1601,7 +1593,7 @@ process:
 #endif
                {
                        if (!tcp_prequeue(sk, skb))
-                       ret = tcp_v4_do_rcv(sk, skb);
+                               ret = tcp_v4_do_rcv(sk, skb);
                }
        } else
                sk_add_backlog(sk, skb);
@@ -2351,7 +2343,7 @@ void tcp4_proc_exit(void)
 
 struct sk_buff **tcp4_gro_receive(struct sk_buff **head, struct sk_buff *skb)
 {
-       struct iphdr *iph = ip_hdr(skb);
+       struct iphdr *iph = skb_gro_network_header(skb);
 
        switch (skb->ip_summed) {
        case CHECKSUM_COMPLETE:
@@ -2443,7 +2435,7 @@ static struct pernet_operations __net_initdata tcp_sk_ops = {
 void __init tcp_v4_init(void)
 {
        inet_hashinfo_init(&tcp_hashinfo);
-       if (register_pernet_device(&tcp_sk_ops))
+       if (register_pernet_subsys(&tcp_sk_ops))
                panic("Failed to create the TCP control socket.\n");
 }