[NET]: Use typesafe inet_twsk() inline function instead of cast.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 9 deletions

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index f745095196f7..6bbd98575172 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -355,7 +355,7 @@ void tcp_v4_err(struct sk_buff *skb, u32 info)
                 return;
         }
         if (sk->sk_state == TCP_TIME_WAIT) {
-                inet_twsk_put((struct inet_timewait_sock *)sk);
+                inet_twsk_put(inet_twsk(sk));
                 return;
         }
 
@@ -960,7 +960,7 @@ static struct sock *tcp_v4_hnd_req(struct sock *sk, struct sk_buff *skb)
                         bh_lock_sock(nsk);
                         return nsk;
                 }
-                inet_twsk_put((struct inet_timewait_sock *)nsk);
+                inet_twsk_put(inet_twsk(nsk));
                 return NULL;
         }
 
@@ -1154,26 +1154,24 @@ discard_and_relse:
 
 do_time_wait:
         if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) {
-                inet_twsk_put((struct inet_timewait_sock *) sk);
+                inet_twsk_put(inet_twsk(sk));
                 goto discard_it;
         }
 
         if (skb->len < (th->doff << 2) || tcp_checksum_complete(skb)) {
                 TCP_INC_STATS_BH(TCP_MIB_INERRS);
-                inet_twsk_put((struct inet_timewait_sock *) sk);
+                inet_twsk_put(inet_twsk(sk));
                 goto discard_it;
         }
-        switch (tcp_timewait_state_process((struct inet_timewait_sock *)sk,
-                                           skb, th)) {
+        switch (tcp_timewait_state_process(inet_twsk(sk), skb, th)) {
         case TCP_TW_SYN: {
                 struct sock *sk2 = inet_lookup_listener(&tcp_hashinfo,
                                                         skb->nh.iph->daddr,
                                                         th->dest,
                                                         inet_iif(skb));
                 if (sk2) {
-                        inet_twsk_deschedule((struct inet_timewait_sock *)sk,
-                                             &tcp_death_row);
-                        inet_twsk_put((struct inet_timewait_sock *)sk);
+                        inet_twsk_deschedule(inet_twsk(sk), &tcp_death_row);
+                        inet_twsk_put(inet_twsk(sk));
                         sk = sk2;
                         goto process;
                 }