[TCP]: Make tcp_sk() do type checking.

7f43e272 · Ingo Molnar · David S. Miller · a632875f · 7f43e272
Commit 7f43e272 authored Dec 29, 2003 by Ingo Molnar Committed by David S. Miller Dec 29, 2003
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include/linux/tcp.h include/linux/tcp.h +4 -1

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--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -386,7 +386,10 @@ struct tcp_sock {
 	struct tcp_opt	  tcp;
 };

-#define tcp_sk(__sk) (&((struct tcp_sock *)__sk)->tcp)
+static inline struct tcp_opt * tcp_sk(const struct sock *__sk)
+{
+	return &((struct tcp_sock *)__sk)->tcp;
+}

 #endif