[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, 5 insertions, 6 deletions

diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 34e004bdeab0..4c2a7c0cafef 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -329,7 +329,7 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
         }
 
         if (sk->sk_state == TCP_TIME_WAIT) {
-                inet_twsk_put((struct inet_timewait_sock *)sk);
+                inet_twsk_put(inet_twsk(sk));
                 return;
         }
 
@@ -749,7 +749,7 @@ static struct sock *tcp_v6_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;
         }
 
@@ -1283,18 +1283,17 @@ discard_and_relse:
 
 do_time_wait:
         if (!xfrm6_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;