[ICSK]: Move TCP congestion avoidance members to icsk

This changeset basically moves tcp_sk()->{ca_ops,ca_state,etc} to inet_csk(),
minimal renaming/moving done in this changeset to ease review.

Most of it is just changes of struct tcp_sock * to struct sock * parameters.

With this we move to a state closer to two interesting goals:

1. Generalisation of net/ipv4/tcp_diag.c, becoming inet_diag.c, being used
   for any INET transport protocol that has struct inet_hashinfo and are
   derived from struct inet_connection_sock. Keeps the userspace API, that will
   just not display DCCP sockets, while newer versions of tools can support
   DCCP.

2. INET generic transport pluggable Congestion Avoidance infrastructure, using
   the current TCP CA infrastructure with DCCP.

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 8 deletions

diff --git a/net/ipv4/tcp_diag.c b/net/ipv4/tcp_diag.c
index 5f4c74f45e82..4288ecfec9a7 100644
--- a/net/ipv4/tcp_diag.c
+++ b/net/ipv4/tcp_diag.c
@@ -66,10 +66,10 @@ static int tcpdiag_fill(struct sk_buff *skb, struct sock *sk,
                 if (ext & (1<<(TCPDIAG_INFO-1)))
                         info = TCPDIAG_PUT(skb, TCPDIAG_INFO, sizeof(*info));
                 
-                if (ext & (1<<(TCPDIAG_CONG-1))) {
-                        size_t len = strlen(tp->ca_ops->name);
+                if ((ext & (1 << (TCPDIAG_CONG - 1))) && icsk->icsk_ca_ops) {
+                        size_t len = strlen(icsk->icsk_ca_ops->name);
                         strcpy(TCPDIAG_PUT(skb, TCPDIAG_CONG, len+1),
-                               tp->ca_ops->name);
+                               icsk->icsk_ca_ops->name);
                 }
         }
         r->tcpdiag_family = sk->sk_family;
@@ -136,18 +136,17 @@ static int tcpdiag_fill(struct sk_buff *skb, struct sock *sk,
                 r->tcpdiag_expires = EXPIRES_IN_MS(icsk->icsk_timeout);
         } else if (icsk->icsk_pending == ICSK_TIME_PROBE0) {
                 r->tcpdiag_timer = 4;
-                r->tcpdiag_retrans = tp->probes_out;
+                r->tcpdiag_retrans = icsk->icsk_probes_out;
                 r->tcpdiag_expires = EXPIRES_IN_MS(icsk->icsk_timeout);
         } else if (timer_pending(&sk->sk_timer)) {
                 r->tcpdiag_timer = 2;
-                r->tcpdiag_retrans = tp->probes_out;
+                r->tcpdiag_retrans = icsk->icsk_probes_out;
                 r->tcpdiag_expires = EXPIRES_IN_MS(sk->sk_timer.expires);
         } else {
                 r->tcpdiag_timer = 0;
                 r->tcpdiag_expires = 0;
         }
 #undef EXPIRES_IN_MS
-
         r->tcpdiag_rqueue = tp->rcv_nxt - tp->copied_seq;
         r->tcpdiag_wqueue = tp->write_seq - tp->snd_una;
         r->tcpdiag_uid = sock_i_uid(sk);
@@ -163,8 +162,9 @@ static int tcpdiag_fill(struct sk_buff *skb, struct sock *sk,
         if (info) 
                 tcp_get_info(sk, info);
 
-        if (sk->sk_state < TCP_TIME_WAIT && tp->ca_ops->get_info)
-                tp->ca_ops->get_info(tp, ext, skb);
+        if (sk->sk_state < TCP_TIME_WAIT &&
+            icsk->icsk_ca_ops && icsk->icsk_ca_ops->get_info)
+                icsk->icsk_ca_ops->get_info(sk, ext, skb);
 
         nlh->nlmsg_len = skb->tail - b;
         return skb->len;