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Subject[patch] clean up tcp_sk(), 2.6.0

i recently wasted a few hours on a bug where i used "tcp_sk(sock)"
instead of "tcp_sk(sock->sk)" - the former, while being blatantly
incorrect, compiles just fine on 2.6.0. The patch below is equivalent to
the define but is also type-safe. Compiles cleanly & boots fine on
2.6.0.

Ingo

--- linux/include/linux/tcp.h.orig
+++ linux/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

-
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