From: Eric Dumazet <edumazet@google.com>
Date: Wed, 20 Sep 2023 20:17:11 +0000 (+0000)
Subject: net_sched: constify qdisc_priv()
X-Git-Tag: io_uring-6.7-2023-11-10~40^2~281^2~4
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=1add90738cf58def972356ecf402e36397187db7;p=linux-block.git

net_sched: constify qdisc_priv()

In order to propagate const qualifiers, we change qdisc_priv()
to accept a possibly const argument.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h
index 15960564e0c3..9fa1d0794dfa 100644
--- a/include/net/pkt_sched.h
+++ b/include/net/pkt_sched.h
@@ -20,10 +20,10 @@ struct qdisc_walker {
 	int	(*fn)(struct Qdisc *, unsigned long cl, struct qdisc_walker *);
 };
 
-static inline void *qdisc_priv(struct Qdisc *q)
-{
-	return &q->privdata;
-}
+#define qdisc_priv(q)							\
+	_Generic(q,							\
+		 const struct Qdisc * : (const void *)&q->privdata,	\
+		 struct Qdisc * : (void *)&q->privdata)
 
 static inline struct Qdisc *qdisc_from_priv(void *priv)
 {